This document summarizes the objectives and recommendations of a consulting project for a molding facility. The objectives were to minimize total travel distance and time, minimize scrap, and identify the optimal number of operators and their utilization. Scenario 1 analyzed machine layout alternatives and recommended positioning machines and the optimal number of operators. Scenario 2 considered adding dedicated material handlers and quality resources but found it did not improve efficiency. The IT recommendations proposed a new layout with machines on two floors to reduce travel time and distance. The conclusion determined the IT recommendations provided the best solution in terms of cost, distance, and number of operators.
The document describes the design and testing of a reciprocating cassava sieving machine. The machine uses a slider crank mechanism powered by an electric motor to convert rotary motion into reciprocating motion of the sieving tray. Testing showed the machine has an output capacity of 100.59kg/hr and efficiency of 75.7%, making it adequate for mass production. Detailed design calculations are provided for components like maximum sieving tray displacement and velocity, as well as load analysis of the sieving mechanism and shaft diameter selection. The machine aims to reduce the labor and stress of manual sieving compared to a ratio of 1:7 between manual and mechanized methods.
Taguchi method for analysing the lathe machinechiragkolambe
The aim of the study of this method in Taguchi is to analyst a lathe machine operation while turning by some given
parameter. The parameter on which we will study is speed, feed, depth of cut, MRR, cutting force, feed force, thrust force. We
will use the Taguchi method to measure this type of parameter. Orthogonal arrays of Taguchi, the analysis of variance
(ANOVA) will help to measure the effect and error Confirmation tests with the optimal levels of cutting parameters are
administered so, for instance, the effectiveness of Taguchi optimization method. It is thus shown that the Taguchi method is
extremely suitable to solve the problem
Optimization of Cutting Parameters for MRR in Turning Process of EN-31 Steel ...IRJET Journal
This document summarizes an experimental study that used the Taguchi method to optimize cutting parameters (speed, feed rate, depth of cut) for maximizing the material removal rate (MRR) during turning of EN-31 hardened steel. Experiments were conducted using a CNC lathe with different parameter combinations based on an L9 orthogonal array. The MRR was measured and analyzed using signal-to-noise ratios to determine the optimal parameter settings. Regression analysis was performed to develop a predictive model. Analysis of variance showed that all parameters significantly affected MRR. The optimal parameters found were cutting speed of 900 RPM, feed rate of 0.3 mm/rev, and depth of cut of 0.9 mm. This provided a maximum
Design and analysis of worm pair used in self locking system with development...eSAT Publishing House
This document describes the design and analysis of a worm pair system used for self-locking. A worm pair system combines two threaded rods or worm screws that are meshed together to provide self-locking properties with over 90% efficiency, compared to around 40% for a conventional worm gear system. The design process involves selecting materials and dimensions for the input shaft, output shaft, load drum hub, and worm screws. Calculations are shown for torque capacities, shear stresses, and efficiencies. Experimental results validate that the worm pair system has higher efficiency than a conventional worm gear self-locking system. A manual clutch is also designed to allow quickly releasing the load by disengaging the load drum from the output shaft.
On the Selection of Optimum Blend of WPO – Combinatorial Mathematics Based Ap...IRJET Journal
This document presents a methodology to select the optimum blend of waste plastic oil (WPO) and diesel using a combinatorial mathematics based approach (CMBA). Experimental data on performance parameters like brake power, specific fuel consumption, mechanical efficiency, brake thermal efficiency and indicated thermal efficiency is collected for blends of 10%, 20% and 30% WPO at different engine loads. CMBA involves normalizing the data, assigning relative importance weights to parameters, forming an alternative selection matrix, and calculating the permanent function value to determine the optimum blend. The analysis found that the 20% WPO blend at a 10kg load has the highest permanent function value and forms the optimum blend out of all test fuels.
Design of Solar Tricycle for Handicapped PeopleIRJET Journal
This document describes the design of a solar-powered tricycle to provide mobility for handicapped individuals. The tricycle is designed to be powered by a solar panel that charges a battery, which then powers an electric motor and drives the tricycle. Key components include a 100W solar panel, brushless DC motor, chain and sprocket system, and batteries. The design aims to overcome issues with manually powered tricycles such as physical strain and limited range/mobility. Initial testing showed the solar tricycle can travel up to 35km on a single battery charge at a speed of 6km/hr after an 8 hour solar charge. The design has the potential to improve independence and mobility for handicapped users through a renewable energy
IRJET- Design and Development of a Bandsaw Machine Roller Bracket for Wei...IRJET Journal
This document summarizes a study on optimizing the weight of roller brackets used in a horizontal bandsaw machine. The researchers used topology optimization tools in Altair Hyperworks to reduce the weight of the roller bracket by 27%, saving approximately Rs. 336 per machine. They validated the optimized design through stress analysis in Hyperworks and experimental testing using a photoelastic model and polariscope instrument. The optimized bracket design was then 3D printed to verify functionality. Overall, the study achieved the goals of reducing material usage, costs, and improving the environmental sustainability of the machine tool.
Design of an automotive differential with reduction ratio greater than 6eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
The document describes the design and testing of a reciprocating cassava sieving machine. The machine uses a slider crank mechanism powered by an electric motor to convert rotary motion into reciprocating motion of the sieving tray. Testing showed the machine has an output capacity of 100.59kg/hr and efficiency of 75.7%, making it adequate for mass production. Detailed design calculations are provided for components like maximum sieving tray displacement and velocity, as well as load analysis of the sieving mechanism and shaft diameter selection. The machine aims to reduce the labor and stress of manual sieving compared to a ratio of 1:7 between manual and mechanized methods.
Taguchi method for analysing the lathe machinechiragkolambe
The aim of the study of this method in Taguchi is to analyst a lathe machine operation while turning by some given
parameter. The parameter on which we will study is speed, feed, depth of cut, MRR, cutting force, feed force, thrust force. We
will use the Taguchi method to measure this type of parameter. Orthogonal arrays of Taguchi, the analysis of variance
(ANOVA) will help to measure the effect and error Confirmation tests with the optimal levels of cutting parameters are
administered so, for instance, the effectiveness of Taguchi optimization method. It is thus shown that the Taguchi method is
extremely suitable to solve the problem
Optimization of Cutting Parameters for MRR in Turning Process of EN-31 Steel ...IRJET Journal
This document summarizes an experimental study that used the Taguchi method to optimize cutting parameters (speed, feed rate, depth of cut) for maximizing the material removal rate (MRR) during turning of EN-31 hardened steel. Experiments were conducted using a CNC lathe with different parameter combinations based on an L9 orthogonal array. The MRR was measured and analyzed using signal-to-noise ratios to determine the optimal parameter settings. Regression analysis was performed to develop a predictive model. Analysis of variance showed that all parameters significantly affected MRR. The optimal parameters found were cutting speed of 900 RPM, feed rate of 0.3 mm/rev, and depth of cut of 0.9 mm. This provided a maximum
Design and analysis of worm pair used in self locking system with development...eSAT Publishing House
This document describes the design and analysis of a worm pair system used for self-locking. A worm pair system combines two threaded rods or worm screws that are meshed together to provide self-locking properties with over 90% efficiency, compared to around 40% for a conventional worm gear system. The design process involves selecting materials and dimensions for the input shaft, output shaft, load drum hub, and worm screws. Calculations are shown for torque capacities, shear stresses, and efficiencies. Experimental results validate that the worm pair system has higher efficiency than a conventional worm gear self-locking system. A manual clutch is also designed to allow quickly releasing the load by disengaging the load drum from the output shaft.
On the Selection of Optimum Blend of WPO – Combinatorial Mathematics Based Ap...IRJET Journal
This document presents a methodology to select the optimum blend of waste plastic oil (WPO) and diesel using a combinatorial mathematics based approach (CMBA). Experimental data on performance parameters like brake power, specific fuel consumption, mechanical efficiency, brake thermal efficiency and indicated thermal efficiency is collected for blends of 10%, 20% and 30% WPO at different engine loads. CMBA involves normalizing the data, assigning relative importance weights to parameters, forming an alternative selection matrix, and calculating the permanent function value to determine the optimum blend. The analysis found that the 20% WPO blend at a 10kg load has the highest permanent function value and forms the optimum blend out of all test fuels.
Design of Solar Tricycle for Handicapped PeopleIRJET Journal
This document describes the design of a solar-powered tricycle to provide mobility for handicapped individuals. The tricycle is designed to be powered by a solar panel that charges a battery, which then powers an electric motor and drives the tricycle. Key components include a 100W solar panel, brushless DC motor, chain and sprocket system, and batteries. The design aims to overcome issues with manually powered tricycles such as physical strain and limited range/mobility. Initial testing showed the solar tricycle can travel up to 35km on a single battery charge at a speed of 6km/hr after an 8 hour solar charge. The design has the potential to improve independence and mobility for handicapped users through a renewable energy
IRJET- Design and Development of a Bandsaw Machine Roller Bracket for Wei...IRJET Journal
This document summarizes a study on optimizing the weight of roller brackets used in a horizontal bandsaw machine. The researchers used topology optimization tools in Altair Hyperworks to reduce the weight of the roller bracket by 27%, saving approximately Rs. 336 per machine. They validated the optimized design through stress analysis in Hyperworks and experimental testing using a photoelastic model and polariscope instrument. The optimized bracket design was then 3D printed to verify functionality. Overall, the study achieved the goals of reducing material usage, costs, and improving the environmental sustainability of the machine tool.
Design of an automotive differential with reduction ratio greater than 6eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Design of Automated Rotory Cage Type Fixture for Cylinder BlockIJERA Editor
Project gives feasible solution to move and rotate the component with full proofing fixturing for special purpose operations like drilling, Tapping, deburring, washing, drying involve in manufacturing and assembly unit of industry. Rotary cage type fixture is made for handling the cylinder head inside the cleaning machine use for making fully ready component before assembly operation .System is useful to save time manpower and deliver perfect cleaned and dry component .system involved all the mechanical components along with the sensors used to restrict the rotating operations, stop and go operations etc.
The document summarizes a student project to redesign an inspection table at a tyre manufacturing plant from a pneumatic to a hydraulic system. It outlines the objectives to overcome operator fatigue issues and increase efficiency. It describes the existing pneumatic system problems like air leaks and noise. The proposed hydraulic system design is presented along with CAD drawings. A cost analysis shows the hydraulic system would have lower lifetime costs despite a higher initial price. Performance analysis indicates the hydraulic system allows workers to inspect more tyres per hour.
This document provides a spin plan for producing 12 tons per day of 32 Ne carded yarn for a weaving mill. The plan includes:
1) Calculations for the number of machines needed at each process step to achieve the production target within an 8 hour shift while accounting for typical waste percentages at each step.
2) Determinations of the number of machines required for winding (6), ring frames (54), simplex machines (7), drawing frames (3-4), carding machines (9) and blowroom lines (1).
3) Notes that the calculations were compiled and assembled by AKM Sahedujjaman, a textile engineering student, on April 8, 2018
Caterpillar cat m318 d mh wheeled excavator (prefix w8r) service repair manua...fujdfjjkskekme
The document provides instructions for removing and installing bottom guards on an excavator. It outlines the following steps:
1. Remove the bolts and bottom guards.
2. To install, position the bottom guards and install the bolts. Tighten the bolts to the specified torque.
3. Inspect all guards and replace any that are damaged.
IRJET- Design of Two-Stage Single Speed Gearbox for Transmission System of SA...IRJET Journal
The document describes the design of a two-stage single speed gearbox for an SAE BAJA vehicle. Key aspects include:
1) The gearbox provides high torque and moderate high speed to meet competition requirements of climbing a 35 degree gradient and reaching 60 kph.
2) It uses a continuously variable transmission for the first stage, providing a maximum ratio of 3.83:1. The two-stage gearbox then provides a further reduction ratio of 7.83:1.
3) Detailed calculations are shown for the gear and shaft designs of each stage to withstand the required torques and stresses. Materials, modules, diameters and other specifications are determined.
4) ANSYS
Design of an effective automated machine for quality palm kernel productionIOSR Journals
Abstract: Palm kernel production potentials of several countries are far from been fully exploited. At present,
many countries are operating below expected capacity and this research effort is to develop an appropriate
machine for quality production of palm kernel. Power requirement of the machine is 4.29kw, resultant bending
moment of the shaft is 4.67Nm and 85.30Nm and diameter of the shaft is 25.39mm. The machine is evaluated
using ‘Dura’ variety at moisture content; 12.00%, 11.10%, 10.20%, 9.60% and 9.00%, and ‘Tenera’ variety at;
12.00%, 11.00%, 10.00%, 9.10% and 8.20% moisture content. The performance of the machine shows that
throughput capacity increases from 625-1270 kg/hr for ‘Dura’ and also increases from 750-1200 kg/hr for
‘Tenera’. Mechanical damage reduces from 2.47-1.40% for ‘Dura’ and reduces from 1.16-0.20% for ‘Tenera’.
Functional efficiency increases from 92.30-96.40% for ‘Dura’ and increases from 95.50-99.07% for ‘Tenera’.
Quality performance efficiency increases from 91.00-95.30% for ‘Dura’ and increases from 95.50-98.80% for
‘Tenera’. The mean shearing force in ‘Dura’ is 31.10 ± 0.20N and that of ‘Tenera’ is 12.66 ± 0.20N.
Keywords - design, efficiency machine, palm kernel,
IRJET- Design and Analysis of Gearbox of an All-Terrain VehicleIRJET Journal
This document describes the design and analysis of the gearbox for an all-terrain vehicle (ATV). It includes specifications for the engine, CVT, and other powertrain components. Gear ratios were selected to provide maximum acceleration while achieving the target speed of 50 km/hr. The gearbox was optimized to reduce weight and size. Calculations were shown for torque, tractive force, acceleration, gradeability, and stresses on gears and shafts. A two-stage gearbox with gear ratios of 2.411 and 3.06 was designed to transfer power efficiently from the engine to the wheels.
An Experimental Study of Ion Motion Optimization for Constraint Economic Load...Mohit Dhiman
This article implements the Ion-Motion Optimization (IMO) optimizer to solve non-convex economic load dispatch (EcLD) problem in power system. The concept of Ion motion optimization is modeled from the attraction and repulsion forces among anions and cations in the real world. The mathematical model of IMO is quiet simple and very easy to implement. The liquid phase of IMO performs exploration and crystal phase simulates the exploitation. To handle the power balance equality constraint, exterior penalty method is used. Finally, EcLD problem having 13-generators is solved using ion motion optimization.
IRJET- Design and Development of Open Differential for Transmission System of...IRJET Journal
This document describes the design and development of an open differential for an all-terrain vehicle (ATV). The authors first perform analytical calculations to determine the required gear ratios and sizes based on the vehicle's dimensions and performance requirements. They select materials and design the gears to withstand bending and contact stresses. Bearings are sized to support the radial and axial loads from the gears. The differential components, including gears, pinion, and center pin, are then modeled in CAD software. In summary, the authors designed and analyzed an open differential through calculations and CAD modeling to transmit torque from the transmission to the wheels of an ATV.
D. Anagnostakis, J.M. Ritchie and T. Lim explore how Lanner predictive simula...Lanner
Presenting at the Lanner predictive simulation conference, 2016, D. Anagnostakis, J.M. Ritchie and T. Lim explore how Lanner predictive simulation software WITNESS can help improve the environmental impact of a manufacturing system.
The document provides a report on analyzing and optimizing the manufacturing system of a client company called KCP technologies Private Ltd. Key points:
- The company manufactures screw pump rotors in a batch production process using 3 CNC workstations.
- Cycle times for the two main products were recorded to calculate production rates. Motion studies were conducted to optimize workstation layouts and reduce travel times.
- The current number of workstations was found to be optimal. Modifications like rearranging tools saved an estimated 1 minute per part produced.
- Further analyses included machine cluster possibilities and quality assurance processes to improve the system.
The document provides a report on analyzing and optimizing the manufacturing system of a client company called KCP technologies Private Ltd. Key points:
- The company manufactures screw pump rotors in a batch production process using 3 CNC workstations.
- Cycle times for the two main products were recorded to calculate production rates. Motion studies were conducted to optimize workstation layouts and reduce travel times.
- The current number of workstations was found to be optimal. Modifications like rearranging tools saved an estimated 1 minute per part produced.
- Further analyses included machine cluster possibilities and quality assurance processes to improve the system.
This report analyzes and optimizes the manufacturing system of a client that produces screw pump rotors. Key points:
1) The factory currently has 3 CNC workstations and produces rotors in batch production. Cycle times were recorded to calculate production rates.
2) The optimum number of workstations was calculated to be 2.97, matching the current 3 workstations. Motion studies were conducted to reduce repositioning times.
3) Implementation of layout changes reduced average cycle times, increasing production rates. Machine clustering allowed one worker to manage multiple machines.
4) Cost analyses showed the optimized system with clustering lowered production costs per unit compared to the present situation. Further automation of material handling was recommended
This document discusses part selection problems in flexible manufacturing systems (FMS) in three sentences:
1) Part selection for FMS design involves choosing the total set of parts for the system, typically using group technology techniques to determine part and machine requirements.
2) Part selection for production on an FMS refers to selecting a subset of parts to produce on the system during a given period.
3) There are two types of part selection problems - one that is a design issue focusing on the overall FMS and one that is tactical involving choosing parts for short-term production planning.
This document discusses part selection problems in flexible manufacturing systems (FMS) in three sentences:
1) Part selection for FMS design involves choosing the total set of parts for the system, typically using group technology techniques to determine part and machine requirements.
2) Part selection for production on an FMS refers to selecting a subset of parts to produce on the system during a given period.
3) There are two types of part selection problems - one that is a design issue focusing on the overall FMS and one that is tactical involving choosing parts for short-term production planning.
Case Quality Management—ToyotaQuality Control Analytics at Toyo.docxcowinhelen
Case: Quality Management—Toyota
Quality Control Analytics at Toyota
As part of the process for improving the quality of their cars, Toyota engineers have identifi ed a potential improvement does happen to get too large, it can cause the accelerator to bind and create a potential problem for the driver. (Note: This part of the case has been fabricated for teaching purposes, and none of these data were obtained from Toyota.)
Let’s assume that, as a first step to improving the process, a sample of 40 washers coming from the machine that produces the washers was taken and the thickness measured in millimeters. The following table has the measurements from the sample:
1.9 2.0 1.9 1.8 2.2 1.7 2.0 1.9 1.7 1.8
1.8 2.2 2.1 2.2 1.9 1.8 2.1 1.6 1.8 1.6
2.1 2.4 2.2 2.1 2.1 2.0 1.8 1.7 1.9 1.9
2.1 2.0 2.4 1.7 2.2 2.0 1.6 2.0 2.1 2.2
Questions
1 If the specification is such that no washer should be greater than 2.4 millimeters, assuming that the thick-nesses are distributed normally, what fraction of the output is expected to be greater than this thickness?
The average thickness in the sample is 1.9625 and the standard deviation is .209624. The probability that the thickness is greater than 2.4 is Z = (2.4 – 1.9625)/.209624 = 2.087068 1 - NORMSDIST(2.087068) = .018441 fraction defective, so 1.8441 percent of the washers are expected to have a thickness greater than 2.4.
2 If there are an upper and lower specification, where the upper thickness limit is 2.4 and the lower thick-ness limit is 1.4, what fraction of the output is expected to be out of tolerance?
The upper limit is given in a. The lower limit is 1.4 so Z = (1.4 – 1.9625)/.209624 = -2.68337. NORMSDIST(-2.68337) = .003644 fraction defective, so .3644 percent of the washers are expected to have a thickness lower than 1.4. The total expected fraction defective would be .018441 + .003644 = .022085 or about 2.2085 percent of the washers would be expected to be out of tolerance.
3 What is the Cpk for the process?
4 What would be the Cpk for the process if it were centered between the specification limits (assume the process standard deviation is the same)?
The center of the specification limits is 1.9, which is used for X-bar in the following:
5 What percentage of output would be expected to be out of tolerance if the process were centered?
Z = (2.4 – 1.9)/.209624 = 2.385221
Fraction defective would be 2 x (1-NORMSDIST(2.385221)) = 2 x .008534 = .017069, about 1.7 percent.
6 Set up X - and range control charts for the current process. Assume the operators will take samples of 10 washers at a time.
Observation
Sample
1
2
3
4
5
6
7
8
9
10
X-bar
R
1
1.9
2
1.9
1.8
2.2
1.7
2
1.9
1.7
1.8
1.89
0.5
2
1.8
2.2
2.1
2.2
1.9
1.8
2.1
1.6
1.8
1.6
1.91
0.6
3
2.1
2.4
2.2
2.1
2.1
2
1.8
1.7
1.9
1.9
2.02
0.7
4
2.1
2
2.4
1.7
2.2
2
1.6
2
2.1
2.2
2.03
0.8
Mean:
1.9625
0.65
From Exhibit 10.13, with sample size of 10, A2 = .31, D3 = .22 and D4 = 1.78
The upper control limit for the X-bar ch.
Enhancing the performance of kmeans algorithmHadi Fadlallah
The document discusses enhancing the K-Means clustering algorithm performance by converting it to a concurrent version using multi-threading. It identifies that steps 2 and 3 of the basic K-Means algorithm contain independent sub-tasks that can be executed in parallel. The implementation in C# uses the Parallel class to parallelize the processing. Analysis shows the concurrent version runs 70-87% faster with increasing performance gains at higher numbers of clusters and data points. Future work could parallelize the full K-Means algorithm.
IRJET- Segregation of Machines According to the Noise Emitted by Differen...IRJET Journal
The document discusses clustering machines according to the noise they emit using hierarchical clustering. Noise data was collected from 10 machines using parameters like LAeq, LAV, LAE, and TWA. Hierarchical clustering with Johnson's algorithm was applied using both single-link and complete-link methods. For single-link, the machines clustered into groups of (1,9,7,8,4,6), (2,5), 3, and 10. For complete-link, the clustering resulted in different groupings.
The document discusses a case study involving the evaluation of a measurement system for an important quality variable, CTQ1, at W.R. Grace. A measurement systems analysis (MSA) study was conducted involving the four worldwide sites that produce the raw material. The results showed a high %GR&R of 94.3% and P/T ratio of 116%, indicating significant measurement error. When analyzed separately, the sites showed varying levels of measurement capability, with one site having a %GR&R of 38.9%. The MSA study identified opportunities to improve the measurement system and link it back to process improvements.
The Performance Analysis of a Fettling Shop Using SimulationIOSR Journals
Fettling shop is the product finishing shop of casting products.After the knockout, the casting is taken
to the fettling shop for doing the fettling work. The fettling process includes cutting, shot blasting, grinding and
painting. In all these process the sand and extra metal on the castings are removed. The project titled „The
performance analysis of a fettling shop using simulation‟ is based on a fettling shop of a casting industry. The
main aim of the project is the performance analysis of the fettling shop. This project is a simulation based
project and is done using a simulation tool called arena. The main concepts related with the performance
analysis are Bottleneck analysis, Productivity analysis and System improvement analysis.
The document discusses how to increase productivity and reduce costs at a customer's facility by implementing automated fastening solutions from Haeger. It provides an example calculation showing how a customer could increase productivity by 30% and reduce quality control costs by 50% by investing in new Haeger machines, which would result in a payback period of 1.4 years. It then highlights the key features and benefits of Haeger's new 824 OneTouch-3 and 824 WindowTouch-3 machines compared to competitors, including faster cycle times, automatic tool changes, and fastener detection capabilities.
IRJET - Grain Sorting and Cleaning System using Raspberry PiIRJET Journal
The document describes the design and implementation of a grain sorting and cleaning system using Raspberry Pi that utilizes image processing techniques to separate grains based on color. The system uses a Raspberry Pi, Pi camera, conveyor belt, and DC motor to capture images of grains on the conveyor belt, perform preprocessing on the images, detect and sort the grains into buckets for wheat, waste grains, and defected grains based on their detected color. The goal of the system is to properly sort grains at a low cost for domestic or small business use to reduce human effort.
Design of Automated Rotory Cage Type Fixture for Cylinder BlockIJERA Editor
Project gives feasible solution to move and rotate the component with full proofing fixturing for special purpose operations like drilling, Tapping, deburring, washing, drying involve in manufacturing and assembly unit of industry. Rotary cage type fixture is made for handling the cylinder head inside the cleaning machine use for making fully ready component before assembly operation .System is useful to save time manpower and deliver perfect cleaned and dry component .system involved all the mechanical components along with the sensors used to restrict the rotating operations, stop and go operations etc.
The document summarizes a student project to redesign an inspection table at a tyre manufacturing plant from a pneumatic to a hydraulic system. It outlines the objectives to overcome operator fatigue issues and increase efficiency. It describes the existing pneumatic system problems like air leaks and noise. The proposed hydraulic system design is presented along with CAD drawings. A cost analysis shows the hydraulic system would have lower lifetime costs despite a higher initial price. Performance analysis indicates the hydraulic system allows workers to inspect more tyres per hour.
This document provides a spin plan for producing 12 tons per day of 32 Ne carded yarn for a weaving mill. The plan includes:
1) Calculations for the number of machines needed at each process step to achieve the production target within an 8 hour shift while accounting for typical waste percentages at each step.
2) Determinations of the number of machines required for winding (6), ring frames (54), simplex machines (7), drawing frames (3-4), carding machines (9) and blowroom lines (1).
3) Notes that the calculations were compiled and assembled by AKM Sahedujjaman, a textile engineering student, on April 8, 2018
Caterpillar cat m318 d mh wheeled excavator (prefix w8r) service repair manua...fujdfjjkskekme
The document provides instructions for removing and installing bottom guards on an excavator. It outlines the following steps:
1. Remove the bolts and bottom guards.
2. To install, position the bottom guards and install the bolts. Tighten the bolts to the specified torque.
3. Inspect all guards and replace any that are damaged.
IRJET- Design of Two-Stage Single Speed Gearbox for Transmission System of SA...IRJET Journal
The document describes the design of a two-stage single speed gearbox for an SAE BAJA vehicle. Key aspects include:
1) The gearbox provides high torque and moderate high speed to meet competition requirements of climbing a 35 degree gradient and reaching 60 kph.
2) It uses a continuously variable transmission for the first stage, providing a maximum ratio of 3.83:1. The two-stage gearbox then provides a further reduction ratio of 7.83:1.
3) Detailed calculations are shown for the gear and shaft designs of each stage to withstand the required torques and stresses. Materials, modules, diameters and other specifications are determined.
4) ANSYS
Design of an effective automated machine for quality palm kernel productionIOSR Journals
Abstract: Palm kernel production potentials of several countries are far from been fully exploited. At present,
many countries are operating below expected capacity and this research effort is to develop an appropriate
machine for quality production of palm kernel. Power requirement of the machine is 4.29kw, resultant bending
moment of the shaft is 4.67Nm and 85.30Nm and diameter of the shaft is 25.39mm. The machine is evaluated
using ‘Dura’ variety at moisture content; 12.00%, 11.10%, 10.20%, 9.60% and 9.00%, and ‘Tenera’ variety at;
12.00%, 11.00%, 10.00%, 9.10% and 8.20% moisture content. The performance of the machine shows that
throughput capacity increases from 625-1270 kg/hr for ‘Dura’ and also increases from 750-1200 kg/hr for
‘Tenera’. Mechanical damage reduces from 2.47-1.40% for ‘Dura’ and reduces from 1.16-0.20% for ‘Tenera’.
Functional efficiency increases from 92.30-96.40% for ‘Dura’ and increases from 95.50-99.07% for ‘Tenera’.
Quality performance efficiency increases from 91.00-95.30% for ‘Dura’ and increases from 95.50-98.80% for
‘Tenera’. The mean shearing force in ‘Dura’ is 31.10 ± 0.20N and that of ‘Tenera’ is 12.66 ± 0.20N.
Keywords - design, efficiency machine, palm kernel,
IRJET- Design and Analysis of Gearbox of an All-Terrain VehicleIRJET Journal
This document describes the design and analysis of the gearbox for an all-terrain vehicle (ATV). It includes specifications for the engine, CVT, and other powertrain components. Gear ratios were selected to provide maximum acceleration while achieving the target speed of 50 km/hr. The gearbox was optimized to reduce weight and size. Calculations were shown for torque, tractive force, acceleration, gradeability, and stresses on gears and shafts. A two-stage gearbox with gear ratios of 2.411 and 3.06 was designed to transfer power efficiently from the engine to the wheels.
An Experimental Study of Ion Motion Optimization for Constraint Economic Load...Mohit Dhiman
This article implements the Ion-Motion Optimization (IMO) optimizer to solve non-convex economic load dispatch (EcLD) problem in power system. The concept of Ion motion optimization is modeled from the attraction and repulsion forces among anions and cations in the real world. The mathematical model of IMO is quiet simple and very easy to implement. The liquid phase of IMO performs exploration and crystal phase simulates the exploitation. To handle the power balance equality constraint, exterior penalty method is used. Finally, EcLD problem having 13-generators is solved using ion motion optimization.
IRJET- Design and Development of Open Differential for Transmission System of...IRJET Journal
This document describes the design and development of an open differential for an all-terrain vehicle (ATV). The authors first perform analytical calculations to determine the required gear ratios and sizes based on the vehicle's dimensions and performance requirements. They select materials and design the gears to withstand bending and contact stresses. Bearings are sized to support the radial and axial loads from the gears. The differential components, including gears, pinion, and center pin, are then modeled in CAD software. In summary, the authors designed and analyzed an open differential through calculations and CAD modeling to transmit torque from the transmission to the wheels of an ATV.
D. Anagnostakis, J.M. Ritchie and T. Lim explore how Lanner predictive simula...Lanner
Presenting at the Lanner predictive simulation conference, 2016, D. Anagnostakis, J.M. Ritchie and T. Lim explore how Lanner predictive simulation software WITNESS can help improve the environmental impact of a manufacturing system.
The document provides a report on analyzing and optimizing the manufacturing system of a client company called KCP technologies Private Ltd. Key points:
- The company manufactures screw pump rotors in a batch production process using 3 CNC workstations.
- Cycle times for the two main products were recorded to calculate production rates. Motion studies were conducted to optimize workstation layouts and reduce travel times.
- The current number of workstations was found to be optimal. Modifications like rearranging tools saved an estimated 1 minute per part produced.
- Further analyses included machine cluster possibilities and quality assurance processes to improve the system.
The document provides a report on analyzing and optimizing the manufacturing system of a client company called KCP technologies Private Ltd. Key points:
- The company manufactures screw pump rotors in a batch production process using 3 CNC workstations.
- Cycle times for the two main products were recorded to calculate production rates. Motion studies were conducted to optimize workstation layouts and reduce travel times.
- The current number of workstations was found to be optimal. Modifications like rearranging tools saved an estimated 1 minute per part produced.
- Further analyses included machine cluster possibilities and quality assurance processes to improve the system.
This report analyzes and optimizes the manufacturing system of a client that produces screw pump rotors. Key points:
1) The factory currently has 3 CNC workstations and produces rotors in batch production. Cycle times were recorded to calculate production rates.
2) The optimum number of workstations was calculated to be 2.97, matching the current 3 workstations. Motion studies were conducted to reduce repositioning times.
3) Implementation of layout changes reduced average cycle times, increasing production rates. Machine clustering allowed one worker to manage multiple machines.
4) Cost analyses showed the optimized system with clustering lowered production costs per unit compared to the present situation. Further automation of material handling was recommended
This document discusses part selection problems in flexible manufacturing systems (FMS) in three sentences:
1) Part selection for FMS design involves choosing the total set of parts for the system, typically using group technology techniques to determine part and machine requirements.
2) Part selection for production on an FMS refers to selecting a subset of parts to produce on the system during a given period.
3) There are two types of part selection problems - one that is a design issue focusing on the overall FMS and one that is tactical involving choosing parts for short-term production planning.
This document discusses part selection problems in flexible manufacturing systems (FMS) in three sentences:
1) Part selection for FMS design involves choosing the total set of parts for the system, typically using group technology techniques to determine part and machine requirements.
2) Part selection for production on an FMS refers to selecting a subset of parts to produce on the system during a given period.
3) There are two types of part selection problems - one that is a design issue focusing on the overall FMS and one that is tactical involving choosing parts for short-term production planning.
Case Quality Management—ToyotaQuality Control Analytics at Toyo.docxcowinhelen
Case: Quality Management—Toyota
Quality Control Analytics at Toyota
As part of the process for improving the quality of their cars, Toyota engineers have identifi ed a potential improvement does happen to get too large, it can cause the accelerator to bind and create a potential problem for the driver. (Note: This part of the case has been fabricated for teaching purposes, and none of these data were obtained from Toyota.)
Let’s assume that, as a first step to improving the process, a sample of 40 washers coming from the machine that produces the washers was taken and the thickness measured in millimeters. The following table has the measurements from the sample:
1.9 2.0 1.9 1.8 2.2 1.7 2.0 1.9 1.7 1.8
1.8 2.2 2.1 2.2 1.9 1.8 2.1 1.6 1.8 1.6
2.1 2.4 2.2 2.1 2.1 2.0 1.8 1.7 1.9 1.9
2.1 2.0 2.4 1.7 2.2 2.0 1.6 2.0 2.1 2.2
Questions
1 If the specification is such that no washer should be greater than 2.4 millimeters, assuming that the thick-nesses are distributed normally, what fraction of the output is expected to be greater than this thickness?
The average thickness in the sample is 1.9625 and the standard deviation is .209624. The probability that the thickness is greater than 2.4 is Z = (2.4 – 1.9625)/.209624 = 2.087068 1 - NORMSDIST(2.087068) = .018441 fraction defective, so 1.8441 percent of the washers are expected to have a thickness greater than 2.4.
2 If there are an upper and lower specification, where the upper thickness limit is 2.4 and the lower thick-ness limit is 1.4, what fraction of the output is expected to be out of tolerance?
The upper limit is given in a. The lower limit is 1.4 so Z = (1.4 – 1.9625)/.209624 = -2.68337. NORMSDIST(-2.68337) = .003644 fraction defective, so .3644 percent of the washers are expected to have a thickness lower than 1.4. The total expected fraction defective would be .018441 + .003644 = .022085 or about 2.2085 percent of the washers would be expected to be out of tolerance.
3 What is the Cpk for the process?
4 What would be the Cpk for the process if it were centered between the specification limits (assume the process standard deviation is the same)?
The center of the specification limits is 1.9, which is used for X-bar in the following:
5 What percentage of output would be expected to be out of tolerance if the process were centered?
Z = (2.4 – 1.9)/.209624 = 2.385221
Fraction defective would be 2 x (1-NORMSDIST(2.385221)) = 2 x .008534 = .017069, about 1.7 percent.
6 Set up X - and range control charts for the current process. Assume the operators will take samples of 10 washers at a time.
Observation
Sample
1
2
3
4
5
6
7
8
9
10
X-bar
R
1
1.9
2
1.9
1.8
2.2
1.7
2
1.9
1.7
1.8
1.89
0.5
2
1.8
2.2
2.1
2.2
1.9
1.8
2.1
1.6
1.8
1.6
1.91
0.6
3
2.1
2.4
2.2
2.1
2.1
2
1.8
1.7
1.9
1.9
2.02
0.7
4
2.1
2
2.4
1.7
2.2
2
1.6
2
2.1
2.2
2.03
0.8
Mean:
1.9625
0.65
From Exhibit 10.13, with sample size of 10, A2 = .31, D3 = .22 and D4 = 1.78
The upper control limit for the X-bar ch.
Enhancing the performance of kmeans algorithmHadi Fadlallah
The document discusses enhancing the K-Means clustering algorithm performance by converting it to a concurrent version using multi-threading. It identifies that steps 2 and 3 of the basic K-Means algorithm contain independent sub-tasks that can be executed in parallel. The implementation in C# uses the Parallel class to parallelize the processing. Analysis shows the concurrent version runs 70-87% faster with increasing performance gains at higher numbers of clusters and data points. Future work could parallelize the full K-Means algorithm.
IRJET- Segregation of Machines According to the Noise Emitted by Differen...IRJET Journal
The document discusses clustering machines according to the noise they emit using hierarchical clustering. Noise data was collected from 10 machines using parameters like LAeq, LAV, LAE, and TWA. Hierarchical clustering with Johnson's algorithm was applied using both single-link and complete-link methods. For single-link, the machines clustered into groups of (1,9,7,8,4,6), (2,5), 3, and 10. For complete-link, the clustering resulted in different groupings.
The document discusses a case study involving the evaluation of a measurement system for an important quality variable, CTQ1, at W.R. Grace. A measurement systems analysis (MSA) study was conducted involving the four worldwide sites that produce the raw material. The results showed a high %GR&R of 94.3% and P/T ratio of 116%, indicating significant measurement error. When analyzed separately, the sites showed varying levels of measurement capability, with one site having a %GR&R of 38.9%. The MSA study identified opportunities to improve the measurement system and link it back to process improvements.
The Performance Analysis of a Fettling Shop Using SimulationIOSR Journals
Fettling shop is the product finishing shop of casting products.After the knockout, the casting is taken
to the fettling shop for doing the fettling work. The fettling process includes cutting, shot blasting, grinding and
painting. In all these process the sand and extra metal on the castings are removed. The project titled „The
performance analysis of a fettling shop using simulation‟ is based on a fettling shop of a casting industry. The
main aim of the project is the performance analysis of the fettling shop. This project is a simulation based
project and is done using a simulation tool called arena. The main concepts related with the performance
analysis are Bottleneck analysis, Productivity analysis and System improvement analysis.
The document discusses how to increase productivity and reduce costs at a customer's facility by implementing automated fastening solutions from Haeger. It provides an example calculation showing how a customer could increase productivity by 30% and reduce quality control costs by 50% by investing in new Haeger machines, which would result in a payback period of 1.4 years. It then highlights the key features and benefits of Haeger's new 824 OneTouch-3 and 824 WindowTouch-3 machines compared to competitors, including faster cycle times, automatic tool changes, and fastener detection capabilities.
IRJET - Grain Sorting and Cleaning System using Raspberry PiIRJET Journal
The document describes the design and implementation of a grain sorting and cleaning system using Raspberry Pi that utilizes image processing techniques to separate grains based on color. The system uses a Raspberry Pi, Pi camera, conveyor belt, and DC motor to capture images of grains on the conveyor belt, perform preprocessing on the images, detect and sort the grains into buckets for wheat, waste grains, and defected grains based on their detected color. The goal of the system is to properly sort grains at a low cost for domestic or small business use to reduce human effort.
This document provides information on costing and cost calculations for manufacturing processes. It discusses the need for zero-based costing to understand cost contributions and identify cost reduction opportunities. It then outlines various cost elements like direct material, labor, expenses, and overheads. The document also provides examples of calculating costs for specific manufacturing processes like machining, drilling, milling, and forging conversion. Machine hour rates are calculated considering machine depreciation, power, labor, and other expenses. Cutting forces for sheet metal cutting are also explained.
Winner Determination in Combinatorial Reverse AuctionsSamira Sadaoui
Combinatorial reverse auctions with two quantitative attributes and buyer's and sellers' constraints.
Winner determination based on genetics algorithms.
Evaluation and comparison
The document summarizes a case study for maintenance planning and reliability centered failure analysis (RCFA) for a centrifugal fan in a dust removal system. Key points:
1) The fan experiences the highest monthly downtime (54.9 hours) which costs $250,000 in lost production monthly.
2) Vibration analysis revealed the fan blade is unbalanced and bearings are failing, which are the top two causes of downtime.
3) A preventive maintenance program is proposed including daily vibration monitoring, weekly balancing, and monthly bearing replacement to reduce downtime to 10.25 hours per month, saving $203,400 in production losses.
Predictive Model for Ultrasonic Slitting of Glass Using Feed Forward Back Pro...IJSRD
The prediction of process performance is essential to select the control parameters for obtaining the goals of production. Ultrasonic machining is popular material removal process brittle materials like glass, ceramics etc. Glass is a widely used engineering material in number of engineering applications like microscopy, optics etc. In this paper, experiments are conducted to obtain data regarding the effect of process parameters on ultrasonic slitting in common glass. Amplitude, pressure and thickness of the glass sheet are chosen as control parameters. Three levels of each of these parameters are selected giving 33 = 27 trials. Material removal rate (MRR), overcut (OC), taper produced on the slits are determined as response parameters. Artificial Neural Network (ANN) model is developed to capture relationship between control and response parameters as a predictive tool to predict the performance of the process.
Industrial plant optimization in reduced dimensional spacesCapstone
This document summarizes an industrial plant optimization lecture given in Toronto. It discusses the history of optimization in oil refining from early adoption in the 1950s to modern real-time optimization (RTO). RTO aims to capture opportunities from changing plant conditions by modeling the plant with engineering equations and optimizing the model in parallel with plant operation. While RTO provides benefits, reconciling measurements, non-linear constraints, and operator acceptance present technical and behavioral challenges. New approaches using projection methods to model plants from historical operating data in reduced dimensional spaces are discussed as alternatives to traditional modeling that may better represent operator preferences and familiarity.
This document presents a study that develops a model to estimate machining surface finish based on measured vibration levels. Milling experiments were conducted varying cutting speed, feed rate, and depth of cut. Surface roughness and overall vibration levels were measured for each test. A curve fitting model was generated using the experimental data to correlate vibration to surface finish. The model was found to estimate surface roughness with 99.9% accuracy and low percentage error, providing a potential method for online surface finish estimation and process control using vibration monitoring.
Development of Machine for Opening and Cleaning of Cotton Fibre in LaboratoriesIRJET Journal
The document describes the development of a machine to open and clean cotton fibre samples in laboratories. The existing lint opener machine is large, uses multiple motors, and has design flaws. The objectives of the new design are to make the machine smaller and more portable, use fewer motors to reduce power consumption, and implement more compact and efficient transmission and suction systems. The methodology involves redesigning the machine and its components to meet the new objectives. The redesigned machine uses a single motor and worm gear transmission to power the licker-in cylinder and feeder roller, replacing the existing belt and chain drives. A compact duct-based suction system replaces the piping. The redesign aims to create a portable and more efficient cotton
Similar to 2010 IIE/Rockwell Student Simulation Competition (20)
This presentation by OECD, OECD Secretariat, was made during the discussion “Pro-competitive Industrial Policy” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/pcip.
This presentation was uploaded with the author’s consent.
This presentation by Juraj Čorba, Chair of OECD Working Party on Artificial Intelligence Governance (AIGO), was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
This presentation by Nathaniel Lane, Associate Professor in Economics at Oxford University, was made during the discussion “Pro-competitive Industrial Policy” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/pcip.
This presentation was uploaded with the author’s consent.
This presentation by Professor Alex Robson, Deputy Chair of Australia’s Productivity Commission, was made during the discussion “Competition and Regulation in Professions and Occupations” held at the 77th meeting of the OECD Working Party No. 2 on Competition and Regulation on 10 June 2024. More papers and presentations on the topic can be found at oe.cd/crps.
This presentation was uploaded with the author’s consent.
This presentation by Thibault Schrepel, Associate Professor of Law at Vrije Universiteit Amsterdam University, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
Collapsing Narratives: Exploring Non-Linearity • a micro report by Rosie WellsRosie Wells
Insight: In a landscape where traditional narrative structures are giving way to fragmented and non-linear forms of storytelling, there lies immense potential for creativity and exploration.
'Collapsing Narratives: Exploring Non-Linearity' is a micro report from Rosie Wells.
Rosie Wells is an Arts & Cultural Strategist uniquely positioned at the intersection of grassroots and mainstream storytelling.
Their work is focused on developing meaningful and lasting connections that can drive social change.
Please download this presentation to enjoy the hyperlinks!
Mastering the Concepts Tested in the Databricks Certified Data Engineer Assoc...SkillCertProExams
• For a full set of 760+ questions. Go to
https://skillcertpro.com/product/databricks-certified-data-engineer-associate-exam-questions/
• SkillCertPro offers detailed explanations to each question which helps to understand the concepts better.
• It is recommended to score above 85% in SkillCertPro exams before attempting a real exam.
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• SkillCertPro assures 100% pass guarantee in first attempt.
This presentation by OECD, OECD Secretariat, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
Suzanne Lagerweij - Influence Without Power - Why Empathy is Your Best Friend...Suzanne Lagerweij
This is a workshop about communication and collaboration. We will experience how we can analyze the reasons for resistance to change (exercise 1) and practice how to improve our conversation style and be more in control and effective in the way we communicate (exercise 2).
This session will use Dave Gray’s Empathy Mapping, Argyris’ Ladder of Inference and The Four Rs from Agile Conversations (Squirrel and Fredrick).
Abstract:
Let’s talk about powerful conversations! We all know how to lead a constructive conversation, right? Then why is it so difficult to have those conversations with people at work, especially those in powerful positions that show resistance to change?
Learning to control and direct conversations takes understanding and practice.
We can combine our innate empathy with our analytical skills to gain a deeper understanding of complex situations at work. Join this session to learn how to prepare for difficult conversations and how to improve our agile conversations in order to be more influential without power. We will use Dave Gray’s Empathy Mapping, Argyris’ Ladder of Inference and The Four Rs from Agile Conversations (Squirrel and Fredrick).
In the session you will experience how preparing and reflecting on your conversation can help you be more influential at work. You will learn how to communicate more effectively with the people needed to achieve positive change. You will leave with a self-revised version of a difficult conversation and a practical model to use when you get back to work.
Come learn more on how to become a real influencer!
This presentation by Yong Lim, Professor of Economic Law at Seoul National University School of Law, was made during the discussion “Artificial Intelligence, Data and Competition” held at the 143rd meeting of the OECD Competition Committee on 12 June 2024. More papers and presentations on the topic can be found at oe.cd/aicomp.
This presentation was uploaded with the author’s consent.
4. Objectives
Aims to The Successful Consulting
Minimize Total Travel
Distance & Time
Minimize The Scrap
Identify Optimal # of Operators
& Their Utilization
11. Step 1 : Generate Machines’ Layout Alternatives
2
Layout Alternative 2
indicate that a machine assigned to a cell is not required
by all parts assigned to that cell.
indicate that a part assigned to a cell requires processing
by a machine not in the cell.
What is the
13. 2
Layout Alternative 2
Ronald G. Askin, and Charles R. Standridge. (1993).
“Modeling and Analysis of Manufacturing Systems.” John Wiley & Sons, Inc.Reference
26. Scenario 2
Dedicated Material Handler’s Utilization
: appx.
Total # of Operators Required including One Material Handler
: 18
1st Recommendation
Adding Dedicated Material Handlers?
Efficiency was not improved
27. Scenario 2
# of Quality Resources Required
: 5 (Based on Quality Control Level)
Total # of Operators Required
: 18
2nd Recommendation
Adding Dedicated Quality Resources?
Efficiency was not improved
30. IT‘s Recommendation
1. Remove the dryer transporting time
2. Reduce travel time with more open space by eliminating the dryer corral
3. Lift trucks are no longer necessary because raw materials are located
on the 2nd floor
4. Shorten travel distance due to more open space on the 2nd floor
5. Save money by decreasing the total number of operators in the plant
6. Cost of changing the layout is moderate compared to the other three
machines’ layout alternatives
Advantages of IT’s Recommendation
31. IT‘s Recommendation
These figures were estimated based on the cost value of Korean molding companies.
$ 1,364 X 33
= appx. $ 45,000
(Fixed Dryer Hoppers)
(Iron Floor )
$ 392 X 1530 Square ft
= appx. $ 600,000
(Oven Dryer )
$ 5,000 X 1
= appx. $ 5,000
Cost
Total
Cost
Dryer
Floor
Oven
32. IT‘s Recommendation
Extract the scraps from the finished goods
Insert the scraps into the mixer machine
Insert raw materials into the mixer machine
Mix the scraps with the raw materials(Recycling)
Produce new raw materials
Scrap
Raw
material
Scrap
Crush the scraps using a disintegrator
Raw
Material
Scrap
37. Additional Problems
WorkStation 1 WorkStation 2 WorkStation 3
# in Queue(PC) 0.010(Max.2) 0.005(Max.2) 0.007(Max.2)
Utilization(%) 9.36 10.10 10.98
# of scrapped parts
Average cycle time
(for the parts that are not rejected at any workstation)
Maximum cycle time
(for the parts that are not rejected at any workstation)
# of times a rejected part was rejected
Collected Statistics
52 pieces
25.881 minutes
38.958 minutes
5 times
38. Additional Problems
Comparison of Alternatives Time (min)
The initial cycle time 25.881
The cycle time by the queue priority 26.586
The cycle time by creating new re-workstations 25.514
Collected Statistics
WorkStation 1
TRIA(7, 9, 12)(min)
WorkStation 2
TRIA(4, 8.5, 15)(min)
WorkStation 3
TRIA(5.6, 9.8, 17)(min)
Re-WorkStation 1
The processing time is
increased by 50%
Re-WorkStation 2
The processing time is
increased by 50%
41. Appendix (Pareto Rule)
Select the candidate machine in close proximity to the Group A - machine’s
most critical two NJ locations
Rule 1.
Select the candidate machine which can fit for the Group A - machine’s
space
Rule 2.
Select the candidate machine which is less important by the total contribution
volume than the other candidate machines in Group C
Rule 3.
46. Appendix (Cell Grouping Method)
Step 1
( Machine-part matrix )
The direct clustering algorithm
( Ordered machine-part matrix )
Example
47. Appendix (Cell Grouping Method)
Step 2
( Column-sorted machine-part matrix )
Sorting the columns to move toward
the left all columns having a 1 in the
first row
Step 3
Sorting the rows by moving upward
rows having a 1 in the first column
( Row-sorted machine-part matrix )
48. Appendix (Cell Grouping Method)
Step 4
( Formation of two cells )
The machine can be grouped
into 2 cells
Unfortunately, it is not always
the case that cells can be formed
without conflicts existing
( Formation with conflicts existing )
50. Appendix (Node Method-Floyd Algorythm)
The Floyd–Warshall algorithm compares all possible
paths through the graph between each pair of
vertices.
Therefore, we can define shortestPath(i, j, k) in terms
of the following recursive formula: