The document discusses the history and development of computer numerical control (CNC) machines. It describes how CNC machines evolved from early numerical control machines run by punched cards to modern CNC machines with onboard computers. The document also covers CNC part programs, basic CNC machine components, motion control types, advantages like precision and disadvantages like higher costs compared to manual machines.
Introduction to CNC machine and Hardware. aman1312
Complete detailing of cnc machine and its operations with its required hardware necessary for increasing its Automation and increasing its manufacturing capability. Also increase in complex shape manufacturing.
The document discusses computer numerical control (CNC) technology. It provides a brief history of CNC development from the first numerically controlled machine commissioned by the US Air Force in 1949. It defines CNC as using a microcomputer to store machine instructions and control logic. The document outlines common CNC applications in machining like milling and turning, as well as forming processes. It also discusses the typical components of a CNC system and provides examples of industries that utilize CNC manufacturing.
The document discusses various topics related to manufacturing processes including conventional and non-conventional machining processes, CNC machining, cutting speeds, feeds, tool offsets, programming codes and functions. It provides information on different machine tools, machining centers, transducers and controllers used in manufacturing. Cutting speed and feed rate tables are included for a variety of materials.
The document discusses the history and development of computer numerical control (CNC) machine tools. It traces the evolution from manual machine tools to CNC machines, which are now controlled by programming codes and allow for automated, precise machining. The document also describes the different types of CNC machines and their applications in manufacturing industries like aerospace and automotive.
The document discusses computer numerical control (CNC), direct numerical control (DNC), and adaptive control systems. It describes how CNC replaced conventional NC by using a computer to store machining programs instead of punched tapes. DNC connects multiple CNC machines to a central computer to facilitate programming and data collection. Adaptive control systems measure output variables during machining and dynamically adjust speeds/feeds to optimize performance based on variability in workpieces and tools.
Elson Paul V's thesis discusses direct numerical control (DNC) systems. A DNC system connects multiple machine tools to a central computer in real-time. The computer stores NC part programs and transmits them to machines on demand over telecommunication lines. This allows programs to be edited centrally and eliminates tape readers. DNC systems provide advantages like convenient program storage, reporting, and editing compared to conventional NC systems.
1. The document discusses the history and development of CNC (Computer Numerical Control) machines from conventional machines to NC (Numerical Control) machines to CNC machines.
2. It describes the key elements of an NC system including the machine control unit, machine tool, and part program/drawings.
3. The document provides details on different types of CNC machines based on their motion type (point-to-point vs continuous path systems) and explains fixed and floating zero systems.
Introduction to CNC machine and Hardware. aman1312
Complete detailing of cnc machine and its operations with its required hardware necessary for increasing its Automation and increasing its manufacturing capability. Also increase in complex shape manufacturing.
The document discusses computer numerical control (CNC) technology. It provides a brief history of CNC development from the first numerically controlled machine commissioned by the US Air Force in 1949. It defines CNC as using a microcomputer to store machine instructions and control logic. The document outlines common CNC applications in machining like milling and turning, as well as forming processes. It also discusses the typical components of a CNC system and provides examples of industries that utilize CNC manufacturing.
The document discusses various topics related to manufacturing processes including conventional and non-conventional machining processes, CNC machining, cutting speeds, feeds, tool offsets, programming codes and functions. It provides information on different machine tools, machining centers, transducers and controllers used in manufacturing. Cutting speed and feed rate tables are included for a variety of materials.
The document discusses the history and development of computer numerical control (CNC) machine tools. It traces the evolution from manual machine tools to CNC machines, which are now controlled by programming codes and allow for automated, precise machining. The document also describes the different types of CNC machines and their applications in manufacturing industries like aerospace and automotive.
The document discusses computer numerical control (CNC), direct numerical control (DNC), and adaptive control systems. It describes how CNC replaced conventional NC by using a computer to store machining programs instead of punched tapes. DNC connects multiple CNC machines to a central computer to facilitate programming and data collection. Adaptive control systems measure output variables during machining and dynamically adjust speeds/feeds to optimize performance based on variability in workpieces and tools.
Elson Paul V's thesis discusses direct numerical control (DNC) systems. A DNC system connects multiple machine tools to a central computer in real-time. The computer stores NC part programs and transmits them to machines on demand over telecommunication lines. This allows programs to be edited centrally and eliminates tape readers. DNC systems provide advantages like convenient program storage, reporting, and editing compared to conventional NC systems.
1. The document discusses the history and development of CNC (Computer Numerical Control) machines from conventional machines to NC (Numerical Control) machines to CNC machines.
2. It describes the key elements of an NC system including the machine control unit, machine tool, and part program/drawings.
3. The document provides details on different types of CNC machines based on their motion type (point-to-point vs continuous path systems) and explains fixed and floating zero systems.
CNC machines use computer programs and numeric control to operate machine tools like milling machines and lathes. Key features include automated tool changes and multi-axis movement controlled by motors. CNC programming involves specifying coordinates, feed rates, spindle speeds, and preparatory codes like G-codes for different motions and functions. Programs are debugged to ensure accurate machining based on part designs.
This presentation is prepared as per syllabus of "COMMUNICATION ANALYSIS AND SKILL DEVELOPMENT PROGRAM (CASP)" prescribed by BOARD OF TECHNICAL EDUCATION, KARNATAKA for 5th sem diploma all branches.
This pptx is prepared by lots of information in websites,Textbooks(Author B
A Srinivas and M R Manjunath),And guidance of our lecturers Srinath V- B.E,FIE & M D Dayanand- B.E . SET Polytechnic, Melukote
difference of NC and CNC ,Part programming,Methods of manual part programming,Basic CNC input data,Preparatory Functions ,Miscellaneous Functions,Interpolation:Canned cycles:part programming on component,Tool length compensation,Cutter Radius,Task compensation:Types of media of NC
The document discusses numerical control (NC) machine tools. [1] NC refers to controlling manufacturing operations through coded numerical instructions inserted directly into machine tools. [2] John T. Parsons is considered the inventor of NC in the 1940s when he used punched cards to control machine tool movements. [3] A NC system consists of a program of instructions, controller unit that interprets the program and controls the machine tool.
1. Numerical control (NC) systems were developed to automate machine tools using programmed sequences of instructions to control machine motions and functions.
2. NC systems use machine control units to read part programs containing coded instructions and translate them into mechanical actions to control machine tools.
3. Modern computer numerical control (CNC) systems provide greater flexibility over early NC systems by using computers to generate part programs and allow real-time adjustments to machine operations.
This document discusses CNC milling and provides information on:
1. CNC milling uses a prepared program to control the functions and motions of a machine tool.
2. The benefits of CNC milling include high accuracy, short production time, and reduced human error. The drawbacks include high costs and maintenance.
3. It describes various milling operations like profile, drilling, pocket milling, and mirroring operations. It also discusses G-codes and M-codes used in CNC programming.
Advantages & Limitations of CNC machine tools,Introduction DNC,Component of a DNC system,Principle,Functions of DNC
Types of DNC systems,Comparison between NC, CNC and DNC machine tools
The document discusses various computer-aided design (CAD) standards used for data exchange, including graphics standards like GKS and OpenGL, as well as data exchange standards like IGES, DXF, and STEP. It provides details on the purpose and requirements of each standard, explaining concepts like layers, entities, and file structure. The key standards discussed are IGES for shape data exchange, DXF for CAD file interchange, and STEP for comprehensive product data across the design and manufacturing lifecycle.
A part program controls a CNC machine tool by providing coded instructions that determine tool movement and auxiliary functions like spindle rotation and coolant. It is composed of letters, numbers, and symbols arranged in functional blocks. Common codes include G-codes for specifying movements like linear and circular interpolation, M-codes for functions like coolant control, and word address coding with line numbers and coordinates to define positions.
An automatic tool changer (ATC) allows CNC machines to work with multiple tools. It stores tools in a magazine and automatically exchanges tools to improve production capacity. There are two main types of ATC - drum-type storage and tool changers on turning centers. An ATC reduces tool change time, increases machine uptime, and provides automatic storage and delivery of tools to the machine.
The document discusses different methods of NC part programming including manual part programming, computer-assisted part programming, manual data input, NC programming using CAD/CAM, and computer automated part programming. It also provides details on punched tape formats, G-codes and M-codes used in NC part programming.
This document provides an overview of CNC (computer numerical control) machines. It discusses the history and evolution of CNC machines from the 1940s to present day. The key elements of a CNC machine are described as the input device, machine control unit, machine tool, driving system, feedback devices, and display unit. The document also covers the basic programming and operation of CNC machines using G and M codes to control axes movement, feed rates, spindle speeds, tool changes, and other functions. Advantages of CNC include easier programming and reducing human errors, while challenges include high setup costs and requiring computer and programming knowledge.
The document summarizes the history and development of numerical control, including its evolution from mechanized machining in the 15th century to computerized numerical control (CNC) in the 20th century. It describes the basic components and functions of NC machines, including the machine control unit, machine tool, control loops unit, and data processing unit. It also discusses the different types of numerical control systems such as conventional NC, direct NC, and computer NC.
Chapter 3 CNC turning and machining centersRAHUL THAKER
This document discusses CNC turning and machining centers. It describes turning as a machining process using a lathe where the tool moves parallel to the workpiece axis to remove material. CNC lathes are replacing older lathes. Milling involves using rotating cutting tools to produce flat and helical surfaces. Machining centers are classified as vertical, horizontal, or universal depending on the spindle orientation. Machining centers have automatic tool changers and may have automatic workpiece positioners or pallet changers to reduce non-productive time during machining operations.
The document discusses various input and output devices used with CAD/CAM systems. It describes keyboards, mice, joysticks, light pens, scanners, touch screens, microphones, and trackballs as common input devices used to enter data and instructions into the computer. Output devices mentioned include monitors for displaying processed information, printers for printed hard copies, speakers for playing audio, and plotters for high-quality printed outputs like drawings.
This document discusses the components of computer integrated manufacturing (CIM). It describes CIM as the integration of the total manufacturing enterprise through computer technologies and communication networks. The key components discussed include the CASA/SME model, computer networking, the OSI model, and the various subsystems and elements that make up CIM such as CAD/CAM, computer-aided process planning (CAPP), and manufacturing resource planning (MRP). The benefits of CIM implementation are also summarized such as improved quality, reduced costs and lead times, and increased flexibility and responsiveness.
CNC Programming for Begainer.
1.Easy Mehtod.
2.Complete Theoritical Knowledge.
3.Motion and coordinate system for NC machine.
4.Axes convention of VMC & HMC.
5.How to make Part Programming.
6.Coordinates System.
7.Programming Format.
8.List of G Codes And M Codes.
9.How to Use of Above Codes In Programme.
10.Reference Point and Return of Machine.
The document discusses CNC machining centers. It defines a CNC machine center as an advanced manufacturing machine tool that can perform various machining operations with accuracy and quality. CNC machine centers allow operations like drilling, milling, and lathing to be done on a single machine. They are used to manufacture parts that require multiple operations, reducing production time compared to separate machines. CNC machine centers can be horizontal, vertical, or universal depending on the configuration, and include mechanisms like automatic tool changers to further reduce production time.
This document discusses adaptive control systems for machining. It defines adaptive control as a feedback system that automatically adjusts machining variables like cutting speed and feed rate based on actual process conditions. The three main functions of adaptive control are identification, decision, and modification. Adaptive control systems are classified as adaptive control with optimization, which uses a performance index, or adaptive control with constraints, which maximizes variables within set limits. Benefits include increased production and tool life, while limitations include lack of reliable tool sensors and standardized interfaces with CNC units.
DNC is a manufacturing system where a central computer controls a number of NC machines in real time through direct connections. The central computer is connected to machine tools and bulk memory for storing NC part programs. It can transmit programs on demand to machines and allows two-way real-time communication and program editing between the computer and machine tools. There are two systems for linking the computer and machines: behind-the-tape-reader and a special machine control unit.
Ch-11 NC; CNC; DNC; FMS; Automation and Robotics_2.pdfJAYANTKUMAR469151
The document discusses NC/CNC machines and programming. It begins by defining NC and CNC, noting that NC machines used punched tape or cards for control while CNC machines added computers for greater capability. CNC machines allow for canned cycles, sub-programming, cutter compensation and other enhancements over NC. The document then provides a brief history of CNC development and discusses differences in CNC languages. It also covers conversational control, advantages and disadvantages of CNC, and programming concepts like work coordinates, tool compensation, canned cycles and important G and M codes.
Contents:
1. History
2. Introduction to CNC Milling
3. Elements of CNC Machine
4. How CNC Works
5. CNC Programming
6. Advantages and Disadvantages of CNC
7. Applications of CNC
CNC machines use computer programs and numeric control to operate machine tools like milling machines and lathes. Key features include automated tool changes and multi-axis movement controlled by motors. CNC programming involves specifying coordinates, feed rates, spindle speeds, and preparatory codes like G-codes for different motions and functions. Programs are debugged to ensure accurate machining based on part designs.
This presentation is prepared as per syllabus of "COMMUNICATION ANALYSIS AND SKILL DEVELOPMENT PROGRAM (CASP)" prescribed by BOARD OF TECHNICAL EDUCATION, KARNATAKA for 5th sem diploma all branches.
This pptx is prepared by lots of information in websites,Textbooks(Author B
A Srinivas and M R Manjunath),And guidance of our lecturers Srinath V- B.E,FIE & M D Dayanand- B.E . SET Polytechnic, Melukote
difference of NC and CNC ,Part programming,Methods of manual part programming,Basic CNC input data,Preparatory Functions ,Miscellaneous Functions,Interpolation:Canned cycles:part programming on component,Tool length compensation,Cutter Radius,Task compensation:Types of media of NC
The document discusses numerical control (NC) machine tools. [1] NC refers to controlling manufacturing operations through coded numerical instructions inserted directly into machine tools. [2] John T. Parsons is considered the inventor of NC in the 1940s when he used punched cards to control machine tool movements. [3] A NC system consists of a program of instructions, controller unit that interprets the program and controls the machine tool.
1. Numerical control (NC) systems were developed to automate machine tools using programmed sequences of instructions to control machine motions and functions.
2. NC systems use machine control units to read part programs containing coded instructions and translate them into mechanical actions to control machine tools.
3. Modern computer numerical control (CNC) systems provide greater flexibility over early NC systems by using computers to generate part programs and allow real-time adjustments to machine operations.
This document discusses CNC milling and provides information on:
1. CNC milling uses a prepared program to control the functions and motions of a machine tool.
2. The benefits of CNC milling include high accuracy, short production time, and reduced human error. The drawbacks include high costs and maintenance.
3. It describes various milling operations like profile, drilling, pocket milling, and mirroring operations. It also discusses G-codes and M-codes used in CNC programming.
Advantages & Limitations of CNC machine tools,Introduction DNC,Component of a DNC system,Principle,Functions of DNC
Types of DNC systems,Comparison between NC, CNC and DNC machine tools
The document discusses various computer-aided design (CAD) standards used for data exchange, including graphics standards like GKS and OpenGL, as well as data exchange standards like IGES, DXF, and STEP. It provides details on the purpose and requirements of each standard, explaining concepts like layers, entities, and file structure. The key standards discussed are IGES for shape data exchange, DXF for CAD file interchange, and STEP for comprehensive product data across the design and manufacturing lifecycle.
A part program controls a CNC machine tool by providing coded instructions that determine tool movement and auxiliary functions like spindle rotation and coolant. It is composed of letters, numbers, and symbols arranged in functional blocks. Common codes include G-codes for specifying movements like linear and circular interpolation, M-codes for functions like coolant control, and word address coding with line numbers and coordinates to define positions.
An automatic tool changer (ATC) allows CNC machines to work with multiple tools. It stores tools in a magazine and automatically exchanges tools to improve production capacity. There are two main types of ATC - drum-type storage and tool changers on turning centers. An ATC reduces tool change time, increases machine uptime, and provides automatic storage and delivery of tools to the machine.
The document discusses different methods of NC part programming including manual part programming, computer-assisted part programming, manual data input, NC programming using CAD/CAM, and computer automated part programming. It also provides details on punched tape formats, G-codes and M-codes used in NC part programming.
This document provides an overview of CNC (computer numerical control) machines. It discusses the history and evolution of CNC machines from the 1940s to present day. The key elements of a CNC machine are described as the input device, machine control unit, machine tool, driving system, feedback devices, and display unit. The document also covers the basic programming and operation of CNC machines using G and M codes to control axes movement, feed rates, spindle speeds, tool changes, and other functions. Advantages of CNC include easier programming and reducing human errors, while challenges include high setup costs and requiring computer and programming knowledge.
The document summarizes the history and development of numerical control, including its evolution from mechanized machining in the 15th century to computerized numerical control (CNC) in the 20th century. It describes the basic components and functions of NC machines, including the machine control unit, machine tool, control loops unit, and data processing unit. It also discusses the different types of numerical control systems such as conventional NC, direct NC, and computer NC.
Chapter 3 CNC turning and machining centersRAHUL THAKER
This document discusses CNC turning and machining centers. It describes turning as a machining process using a lathe where the tool moves parallel to the workpiece axis to remove material. CNC lathes are replacing older lathes. Milling involves using rotating cutting tools to produce flat and helical surfaces. Machining centers are classified as vertical, horizontal, or universal depending on the spindle orientation. Machining centers have automatic tool changers and may have automatic workpiece positioners or pallet changers to reduce non-productive time during machining operations.
The document discusses various input and output devices used with CAD/CAM systems. It describes keyboards, mice, joysticks, light pens, scanners, touch screens, microphones, and trackballs as common input devices used to enter data and instructions into the computer. Output devices mentioned include monitors for displaying processed information, printers for printed hard copies, speakers for playing audio, and plotters for high-quality printed outputs like drawings.
This document discusses the components of computer integrated manufacturing (CIM). It describes CIM as the integration of the total manufacturing enterprise through computer technologies and communication networks. The key components discussed include the CASA/SME model, computer networking, the OSI model, and the various subsystems and elements that make up CIM such as CAD/CAM, computer-aided process planning (CAPP), and manufacturing resource planning (MRP). The benefits of CIM implementation are also summarized such as improved quality, reduced costs and lead times, and increased flexibility and responsiveness.
CNC Programming for Begainer.
1.Easy Mehtod.
2.Complete Theoritical Knowledge.
3.Motion and coordinate system for NC machine.
4.Axes convention of VMC & HMC.
5.How to make Part Programming.
6.Coordinates System.
7.Programming Format.
8.List of G Codes And M Codes.
9.How to Use of Above Codes In Programme.
10.Reference Point and Return of Machine.
The document discusses CNC machining centers. It defines a CNC machine center as an advanced manufacturing machine tool that can perform various machining operations with accuracy and quality. CNC machine centers allow operations like drilling, milling, and lathing to be done on a single machine. They are used to manufacture parts that require multiple operations, reducing production time compared to separate machines. CNC machine centers can be horizontal, vertical, or universal depending on the configuration, and include mechanisms like automatic tool changers to further reduce production time.
This document discusses adaptive control systems for machining. It defines adaptive control as a feedback system that automatically adjusts machining variables like cutting speed and feed rate based on actual process conditions. The three main functions of adaptive control are identification, decision, and modification. Adaptive control systems are classified as adaptive control with optimization, which uses a performance index, or adaptive control with constraints, which maximizes variables within set limits. Benefits include increased production and tool life, while limitations include lack of reliable tool sensors and standardized interfaces with CNC units.
DNC is a manufacturing system where a central computer controls a number of NC machines in real time through direct connections. The central computer is connected to machine tools and bulk memory for storing NC part programs. It can transmit programs on demand to machines and allows two-way real-time communication and program editing between the computer and machine tools. There are two systems for linking the computer and machines: behind-the-tape-reader and a special machine control unit.
Ch-11 NC; CNC; DNC; FMS; Automation and Robotics_2.pdfJAYANTKUMAR469151
The document discusses NC/CNC machines and programming. It begins by defining NC and CNC, noting that NC machines used punched tape or cards for control while CNC machines added computers for greater capability. CNC machines allow for canned cycles, sub-programming, cutter compensation and other enhancements over NC. The document then provides a brief history of CNC development and discusses differences in CNC languages. It also covers conversational control, advantages and disadvantages of CNC, and programming concepts like work coordinates, tool compensation, canned cycles and important G and M codes.
Contents:
1. History
2. Introduction to CNC Milling
3. Elements of CNC Machine
4. How CNC Works
5. CNC Programming
6. Advantages and Disadvantages of CNC
7. Applications of CNC
This document provides information about CNC milling. It begins with objectives of understanding CNC machine development, NC programming, and producing products using CNC milling. It then introduces non-traditional machining processes and numerical control. The document describes the evolution of CNC systems and milling machines. It includes diagrams of CNC milling apparatus and components. The procedure, results, sample calculation, discussion, conclusion, and recommendations are also summarized. The key points are understanding CNC milling principles and NC programming to produce products through CNC machining.
Computer Numerical Control (CNC) Machining is the process through which computers control machine-based processes in manufacturing. The kinds of machines controlled include lathes, mills, routers and grinders – all used for manufacturing of metal and plastic products.
This document provides information about numerical control (NC) and computer numerical control (CNC) machining. It defines NC as using coded programs to automatically operate machines, with CNC adding an onboard computer. The history of NC is described from its origins in 1947 to modern CNC. Key aspects of CNC systems like controllers, programming, and integrated CAD/CAM are summarized. Other machining techniques like EDM and laser cutting are also briefly outlined.
The document provides an overview of CNC (computer numerical control) machining compared to conventional machining. Some key points include:
- CNC machines can precisely reproduce a programmed design and produce thousands of identical parts much faster than conventional machining.
- CNC machines can operate continuously without rest, and programming can be easily updated by changing software.
- Advanced CNC software allows for machining of complex geometries not possible through manual machining.
- CNC machines require less skilled operators than conventional machining once programmed.
Numerical control (NC) is a form of programmable automation that uses coded alphanumeric data to control the mechanical actions of machine tools. This data represents positions of the workhead and workpart and other instructions. Early NC used punched paper tape to store programs, but later computer numerical control (CNC) added memory and allowed programs to be written at a computer terminal. CNC equipment consists of a machine control unit that stores and executes part programs to control processing equipment like machine tools. Part programs contain instructions for tool positions, speeds, and other functions to transform a workpiece.
This document provides an overview of CNC (computer numerical control) machines. It discusses the introduction of CNC, operations like milling and cutting, advantages like accuracy and flexibility. It describes 3, 4 and 5 axis machines and the benefits of 5 axis CNC for complex shapes. The document outlines machine configurations, specifications and applications for 5 axis CNC. It provides details on programming CNC machines using G and M codes to control axes, speeds, tools and other functions.
Numerical control (NC) uses letters, numbers and symbols to automate machine tool functions like spindle speed, tool positioning, and feed rate (paragraph 1). NC allows automatic control of starting/stopping the spindle, spindle speed, tool positioning along paths, feed rate, and tool changes (paragraph 2). Common NC machine tools have automated control over functions like the X, Y, and Z axes of a milling machine (paragraph 3).
A project report of map of india made by the CNC SIMULATOR PRO software Mech...Jayant Tailor
The document is a project report on making a map of India using CNC simulator pro software. It includes an introduction to CNC machines and the CNC simulator pro software. It then describes the 2D design of the map of India, the steps taken in the CNC simulator, selecting an appropriate CNC machine, and includes the programming code used to create the design.
IRJET- Analysis of File Conversion Program Used for CNC MachineIRJET Journal
This document describes a file conversion program used to optimize feed rates and reduce machining time for CNC machines. The program takes as input a tool path file generated from CAM software. It then calculates acceptable feed rates and other parameters required by the CNC machine. The output is a .kou file with the optimized parameters. The program aims to minimize machining time by avoiding having the cutting tool slow down to zero speed when changing directions or feed rates, and instead allows it to slow to an intermediate speed. This reduces unnecessary acceleration and deceleration time. The file conversion process and goals of optimizing feed rates and machining time are discussed.
This document provides an introduction to computer numerical control (CNC) machines. It discusses that CNC machines operate using programmed codes rather than manual control. The document outlines various CNC operations like milling and drilling. It describes the advantages of CNC machines as being able to operate continuously with high accuracy, batch production, and ability to update software. Five-axis CNC machines are discussed as able to machine complex shapes in a single setup. Specifications are provided for a sample five-axis CNC machine including its travel distances and spindle capabilities.
This document discusses advanced manufacturing technology, specifically automation fundamentals and CAD/CAM/CNC. It defines automation and its three basic components: power, a program of instructions, and a control system. It describes closed-loop and open-loop control systems. It also discusses different types of automation including fixed, programmable, and flexible automation. Additionally, it outlines hardware for automation including sensors, actuators, interface devices, and process controllers. The document also provides an overview of CAD/CAM/CNC, describing CAD, CAM software, NC and CNC systems, DNC, machine tools, and NC programming addresses and codes.
This document summarizes a seminar on CNC machines presented by Alok Raj. It defines CNC as computer numerical control and traces the history of CNC machines from their development for the US Air Force in 1949 to modern computer-linked machines. The key benefits of CNC machines are increasing production throughput, improving part quality and accuracy, stabilizing costs, and enabling complex geometries. A CNC machine uses a computer to convert a digital design into numerical code that controls motors moving a vice holding material in three axes to cut and shape it according to the design.
Group 06 batch-2017-cam_date-03-nov-2020Dhyey Shukla
This document discusses different methods of NC part programming including manual part programming, computer-assisted part programming, manual data input, NC programming using CAD/CAM, and computer automated part programming. It provides details on manual part programming including writing processing instructions on a part program manuscript which is then used to create a punched tape. Computer-assisted programming allows writing instructions in a high-level language which is easier than manual programming and generates the NC program.
The document lists various manual part programs related to turning and milling operations that students must complete as part of the Mechanical Engineering Department's CIM & Automation Lab. It includes 21 turning operation programs and 5 milling operation programs. The document also provides details on the basic steps in the NC procedure, including process planning, part programming, part program entry, proving the part program, and production. It describes concepts like coordinate systems, zero points, reference points, and part programming formats.
This document provides information about a CNC Train Master Lathe model CNC T-100(S). It includes specifications of the lathe such as dimensions, spindle speeds, feeds, and details of the mechanical components. It also describes the features and operation of the Siemens 802C CNC system including jogging, reference point approach, programming methods, and tool setting. The document is intended to train operators and engineers on CNC turning operations using this lathe.
IRJET - Study on Computer Numerical Control (CNC) TechnologyIRJET Journal
This document discusses computer numerical control (CNC) technology and CNC machines. It begins with an introduction to CNC machines and their benefits over conventional machines, such as improved automation, consistency, accuracy, and flexibility. It then describes the typical parts of a CNC machine, including the controller, drives, motors (servo motors, spindle motors, stepper motors), and mechanical components. The document discusses the differences between conventional and CNC machines. It also categorizes different types of CNC machines and novel machining technologies. In conclusion, it states that CNC machines are preferable for mass production due to their accuracy and reliability, though the initial costs are higher than conventional machines.
This document describes a CNC milling machine training program presented by Gitanshu Kumar. It includes sections on the evolution of NC machines, types of CNC machines and controls, data input methods, operational features of CNC machines, features of CNC milling, tools used, cut viewer software, programming letters and codes, and an example CNC program. Advantages of CNC machines include high repeatability, precision, and productivity while disadvantages include high setup costs and needing skilled operators.
This document provides information about a course on CNC Machine Tools. It outlines 5 modules that will be covered in the course: 1) Introduction to CNC Machine Tools, 2) Structure of CNC Machine Tools, 3) Drives and Controls, 4) CNC Programming, and 5) Tooling and Work Holding Devices. Each module will cover topics related to the components, programming, and applications of CNC machine tools.
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This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMSIJNSA Journal
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
Low power architecture of logic gates using adiabatic techniquesnooriasukmaningtyas
The growing significance of portable systems to limit power consumption in ultra-large-scale-integration chips of very high density, has recently led to rapid and inventive progresses in low-power design. The most effective technique is adiabatic logic circuit design in energy-efficient hardware. This paper presents two adiabatic approaches for the design of low power circuits, modified positive feedback adiabatic logic (modified PFAL) and the other is direct current diode based positive feedback adiabatic logic (DC-DB PFAL). Logic gates are the preliminary components in any digital circuit design. By improving the performance of basic gates, one can improvise the whole system performance. In this paper proposed circuit design of the low power architecture of OR/NOR, AND/NAND, and XOR/XNOR gates are presented using the said approaches and their results are analyzed for powerdissipation, delay, power-delay-product and rise time and compared with the other adiabatic techniques along with the conventional complementary metal oxide semiconductor (CMOS) designs reported in the literature. It has been found that the designs with DC-DB PFAL technique outperform with the percentage improvement of 65% for NOR gate and 7% for NAND gate and 34% for XNOR gate over the modified PFAL techniques at 10 MHz respectively.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
2. Dept. of mechanical Engineering, GIET,BBSR
Highlights
1 HISTORY OF CNC
2 ABOUT CNC
3 CNC PART PROGRAM
4 ADVANTAGE & DISADVANTAGE
5 APPLICATION AND IMPROVEMENT
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3. Dept. of mechanical Engineering, GIET,BBSR
HISTORY OF CNC
The concept is credited to John Parson (1947). Using punched
cards he was able to control the position of a machine in an attempt
to machine helicopter blade.
US Air Force teamed up with MIT to develop a programmable
milling machine (1949).
In 1952, a three-axis Hydrotel milling machine was demonstrated.
The term Numerical Control (NC) originated. The machine had an
electromechanical controller and used punched cards.
A new class of machines called machining centers and turning
centers that could perform multiple machining processes was
developed.
Modern NC machine has a computer on board, Computer
Numerical Control (CNC). They can run unattended at over
20,000 rpm (spindlier speed) with a feed rate of over 600 rpm and
an accuracy of .0001
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4. HISTORY OF CNC
Dept. of mechanical Engineering, GIET,BBSR
More recently, microprocessors have made CNC controls even
cheaper. The Enhanced Machine Controller project, or EMC2, was a
project to implement an Open Source CNC controller that was started
by NIST, the National Institute of Standards and Technology as a
demonstration. Some time in 2000, the project was taken into the
public domain and Open Source, and EMC2 appeared a short time
later in 2003.
(1959 CNC Machine: Milwaukee-Matic-II was first machine with a tool changer)
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5. ABOUT CNC
Dept. of mechanical Engineering, GIET,BBSR
Computer
Numerical
Control
CNC Stands for
Numerical control is a method of automatically operating a
manufacturing machine based on a code of letters, numbers, and
special characters.
The numerical data required to produce a part is provided to a
machine in the form of a program, called part program or CNC
program.
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6. ABOUT CNC
The program is translated into the appropriate electrical signals for
input to motors that run the machine.
A CNC machine is an NC machine with the added feature of an on-board
computer.
Dept. of mechanical Engineering, GIET,BBSR
6
7. ABOUT CNC
Dept. of mechanical Engineering, GIET,BBSR
HAAS CNC Machines
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8. ABOUT CNC
Dept. of mechanical Engineering, GIET,BBSR
Basic Components
An NC system consists of the machine tools, the part-program, and the
machine control unit (MCU).
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9. ABOUT CNC
Dept. of mechanical Engineering, GIET,BBSR
Machine Tools
The machine tools perform the useful work.
A machine tool consists of.
A worktable,
One or more spindles, motors and controls,
Cutting tools,
Work fixtures, and.
Other auxiliary equipment needed in the machining operation.
The drive units are either powered by stepping motors (for open-loop
control), servomotors (for close-loop control), pneumatic drives, or
hydraulic drives.
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10. CNC PART PROGRAM
The part-program is a collection of all data required to produce the
part. It is arranged in the form of blocks of information.
Each block contains the numerical data required for processing a
segment of the work piece.
Dept. of mechanical Engineering, GIET,BBSR
PART PROGRAM
MANUAL PROGRAM COMPUTER ASSITED
PART PROGRAM
Part program is of two type:
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11. CNC PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
PROCESS PLANNING
JOB & TOOL SET UP PLANNING
AXES SELECTION
MACHINING PATH PLANNING
TOOL SELECTION
PART PROGRAM WRITTING
CUTTING PROCES PARAMETER PLANNING
PART PROGRAM PROVING
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12. CNC PART PROGRAM
MANUAL PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
Manual part program is written in a special set of instruction
called manuscript.
The instruction are prepared in précised manner because the
typist prepare the NC tape directly from the manuscript
Manuscript includes instructions and also other data such as
other preparatory commands, miscellaneous instructions and
speed/feed specifications all of which need to operate the machine
under tape control .
MANUAL PART PROGRAM
PTP JOBS
COUNTOURING JOBS
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13. CNC PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
COMPUTER ASSISTED PART PROGRAMMING
Programmers Activities:
Geometry workspace entry
Entry of sequence of operation
Computer Activities:
Input Translation
Advance computation
Cutting tool offset calculation
Post processing
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14. CNC PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
Preparatory command (G code)
The G codes prepare the MCU for a given operation, typically involving a
cutter motion.
G00 rapid motion, point-to-point positioning
G01 linear interpolation (generating a sloped or straight cut)
G06 parabolic interpolation (produces a segment of a parabola)
G17 XY plane selection
G20 circular interpolation
G28 automatic return to reference point
G33 thread cutting
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15. CNC PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
Miscellaneous commands (M code)
M00 program stop
M03 start spindle rotation (cw)
M06 tool change
M07 turn coolant on
Feed commands (F code)
Used to specify the cutter feed rates in inch per minute.
Speed commands (S code)
Used to specify the spindle speed in rpm.
Tool commands (T code)
Specifies which tool to be used, machines with automatic tool
changer.
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16. CNC PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
CNC Machine Axes of Motion
The coordinate system used for the tool path must be identical to the
coordinate system used by the CNC machine. The standards for machine
axes are established according to the industry standard report EIA RS-267A.
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17. CNC PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
CNC Machine Axes of Motion
17
18. CNC PART PROGRAM
CNC MOTION CONTROL
POINT TO POINT MOTION
STRAIGHT CUT MOTION
COUNTORING MOTION
Dept. of mechanical Engineering, GIET,BBSR
1. Point-to-point (PTP) MOTION
The cutting tool is moved relative to the work piece (i.e. Either the cutting
tool moves, or the work piece moves) until the cutting tool is at a
numerically defined position and then the motion is paused.
The cutting tool then performs an operation.
When the operation is completed, the cutting tool moves relative to the
work piece until the next point is reached, and the cycle is repeated.
The simplest example of a PTP NC machine tool is the NC drilling
machine.
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19. CNC PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
Straight-cut MOTION
Straight-cut system are capable of moving the cutting tool parallel to one of
the major axes (X-Y-Z) at a controlled rate suitable for machining.
It is appropriate for performing milling operations to fabricate work pieces
of rectangular configurations.
Straight-cut NC systems can also perform PTP operations.
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20. CNC PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
Contouring NC
In contouring (continuous path) operations, the tool is cutting while the
axes of motion are moving.
The axes can be moved simultaneously, at different velocity.
The path of the cutter is continuously controlled to generate the desired
geometry of the work piece.
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21. CNC PART PROGRAM
Dept. of mechanical Engineering, GIET,BBSR
Example of a part program
N1 G00 X-35 Z-5
N2 G01 X10 Z0 F100
N3 G01 X0 Z-30 F100
N4 G01 X10 Z0 F100
N5 G01 X0 Z-30 F100
N6 G01 X10 Z-0 F100
N7 G01 X0 Z-40 F100
N8 G00 X-35 Z-5
M30
(This is a manual part program for lathe machining)
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P1
P2
P3 P4
+X
+Z
-X
-Z
22. Dept. of mechanical Engineering, GIET,BBSR
ADVANTAGE & DISADVANTAGE
ADVANTAGE
CNC machines can be used continuously 24 hours a day, 365 days a
year and only need to be switched off for occasional maintenance.
CNC machines are programmed with a design which can then be
manufactured hundreds or even thousands of times. Each
manufactured product will be exactly the same.
Less skilled/trained people can operate CNCs unlike manual lathes /
milling machines etc.. which need skilled engineers.
CNC machines can be updated by improving the software used to
drive the machines
Training in the use of CNCs is available through the use of ‘virtual
software’. This is software that allows the operator to practice using
the CNC machine on the screen of a computer. The software is similar
to a computer game.
22
23. Dept. of mechanical Engineering, GIET,BBSR
ADVANTAGE & DISADVANTAGE
CNC machines can be programmed by advanced design software
such as Pro/DESKTOP®, enabling the manufacture of products that
cannot be made by manual machines, even those used by skilled
designers / engineers.
Modern design software allows the designer to simulate the
manufacture of his/her idea. There is no need to make a prototype or a
model. This saves time and money.
One person can supervise many CNC machines as once they are
programmed they can usually be left to work by themselves.
Sometimes only the cutting tools need replacing occasionally.
A skilled engineer can make the same component many times.
However, if each component is carefully studied, each one will vary
slightly. A CNC machine will manufacture each component as an
exact match.
23
24. Dept. of mechanical Engineering, GIET,BBSR
ADVANTAGE & DISADVANTAGE
DISADVANTAGES
CNC machines are more expensive than manually operated machines,
although costs are slowly coming down.
The CNC machine operator only needs basic training and skills,
enough to supervise several machines. In years gone by, engineers
needed years of training to operate centre lathes, milling machines and
other manually operated machines. This means many of the old skills
are been lost.
Less workers are required to operate CNC machines compared to
manually operated machines. Investment in CNC machines can lead
to unemployment.
Many countries no longer teach pupils / students how to use manually
operated lathes / milling machines etc... Pupils / students no longer
develop the detailed skills required by engineers of the past. These
include mathematical and engineering skills
24
25. Dept. of mechanical Engineering, GIET,BBSR
ADVANTAGE & DISADVANTAGE
COMPUTER NUMERICAL CONTROL - MACHINE MANUALLY OPERATED CENTRE LATHE
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26. APPLICATION AND ADVANCEMENT
APPLICATION
CNC machine is used
In the metal removal industry
In the metal fabrication industry
In the electrical discharge machining industry
In the woodworking industry
Laser welding in automobile industry
Laser machining and Cutting
Dept. of mechanical Engineering, GIET,BBSR
Small parts made using
EDM
Laser welding in automobile industry LASER MACHINING
26
27. Dept. of mechanical Engineering, GIET,BBSR
APPLICATION AND ADVANCEMENT
Other Industries where CNC machines are used:
Many forms of lettering and engraving systems use CNC
technology. Water jet machining uses a high pressure water jet
stream to cut through plates of material. CNC is even used in the
manufacturing of many electrical components. For example, there
are CNC coil winders, and CNC terminal location and soldering
machines.
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28. APPLICATION AND ADVANCENENT
ADVANCES OF CNC:
CNC are operated using DNCs
Reverse engineering is possible only because of CNC
Robotics technology is introduced in CNC technology
3D printing is done using CNC. Advance machining process such
as EDM,LBM, Stereolithography (SLA), Fused Deposition
Modeling (FDM)
Rapid prototyping, Rapid manufacturing concepts are developed
after CNC .
Dept. of mechanical Engineering, GIET,BBSR
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A rapid prototyping machine
using selective laser sintering