The document discusses different types of gears used in mechanical systems. It describes gears according to their positioning, such as parallel axes (spur and helical gears), intersecting axes (bevel gears), and non-intersecting axes (worm gears). It also categorizes gears by their peripheral velocity as low, medium, or high velocity. Examples are given of uses for different gear types in applications like cars, machinery, and other mechanical systems. Diagrams are included to illustrate the different gear configurations.
Design of Flat belt, V belt and chain drivesDr. L K Bhagi
Geometrical relationships, Analysis of belt tensions, Condition for maximum power transmission, Characteristics of belt drives, Selection of flat belt, V- belt, Selection of V belt, Roller chains, Geometrical relationship, Polygonal effect, Power rating of roller chains, Design of chain drive, Introduction to belt drives and belt construction, Introduction to chain drives
Unit 7-gear trains, Kinematics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Design of Flat belt, V belt and chain drivesDr. L K Bhagi
Geometrical relationships, Analysis of belt tensions, Condition for maximum power transmission, Characteristics of belt drives, Selection of flat belt, V- belt, Selection of V belt, Roller chains, Geometrical relationship, Polygonal effect, Power rating of roller chains, Design of chain drive, Introduction to belt drives and belt construction, Introduction to chain drives
Unit 7-gear trains, Kinematics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
“V - Belts” - Design of Machine Element Umang Parmar
Introduction to V-Belts.
Construction of V-Belts.
Types of Standard Cross Section of V-Belts.
Designation of V-Belts.
Advantages of V-Belts & Limitation of V-Belts.
Application of V-Belts.
This Presentation Describes the Base Study about different Mechanical Drives and their selection parameters to use in Industry. it will also clear the idea behind selecting the mechanical drives only instead of going for other types of drives.
Unit 5- balancing of reciprocating masses, Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Synthesis of Mechanism
Theory of Machine
Introduction of synthesis
Types of synthesis
Synthesis of a four bar chain
Freudenstein’s equation for four bar mechanism
Precision point for function generator
(Chebychev spacing method)
Bloch method
Definition, Use, Types of beariings, Types of Journal bearing, Materials for journal bearing, Failures of journal bearing, Design terms for journal bearing, Types of roller contact bearing, applications of roller contact bearing, Designation of roller contact bearing, Design terms for roller contact bearing, comparison between journal and roller bearings, characteristics of bearings, selection procedure of bearings
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Belt is a Flexible Mechanical element that transmit power from one shaft to another
Belt is a Flexible Mechanical element that transmit power from one shaft to another
Gear Train
Ex: Automobile, engines etc.
Chain Drive
Ex : Bi-cycle , Motor cycle etc.
Belt Drive
Ex: Rice mills, sewing machine etc.
Rope Drive
Ex: lift, crane etc
“V - Belts” - Design of Machine Element Umang Parmar
Introduction to V-Belts.
Construction of V-Belts.
Types of Standard Cross Section of V-Belts.
Designation of V-Belts.
Advantages of V-Belts & Limitation of V-Belts.
Application of V-Belts.
This Presentation Describes the Base Study about different Mechanical Drives and their selection parameters to use in Industry. it will also clear the idea behind selecting the mechanical drives only instead of going for other types of drives.
Unit 5- balancing of reciprocating masses, Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Synthesis of Mechanism
Theory of Machine
Introduction of synthesis
Types of synthesis
Synthesis of a four bar chain
Freudenstein’s equation for four bar mechanism
Precision point for function generator
(Chebychev spacing method)
Bloch method
Definition, Use, Types of beariings, Types of Journal bearing, Materials for journal bearing, Failures of journal bearing, Design terms for journal bearing, Types of roller contact bearing, applications of roller contact bearing, Designation of roller contact bearing, Design terms for roller contact bearing, comparison between journal and roller bearings, characteristics of bearings, selection procedure of bearings
Like Comment and download
Belt is a Flexible Mechanical element that transmit power from one shaft to another
Belt is a Flexible Mechanical element that transmit power from one shaft to another
Gear Train
Ex: Automobile, engines etc.
Chain Drive
Ex : Bi-cycle , Motor cycle etc.
Belt Drive
Ex: Rice mills, sewing machine etc.
Rope Drive
Ex: lift, crane etc
This presentation briefly tells about the classification of Gears. It includes information about spur, helical, bevel, herringbone, rack and pinion, internal and external gears.
I want this job to utilize the skills which I've gotten from my Boss, colleague and others. I will utilize this knowledge for the success of you and for my personal success. I will prove myself by my job.
Modification of Disc Brakes Using Rotating Brake PadsIOSR Journals
Under the topic ‘Modification of Disc Brakes using Rotating Friction Pads’, I have studied different
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braking effect by modifying the existing design by using rotating friction pad. This friction pad is made to rotate
in opposite direction as that of rotor, this is done by using a separate assembly of compound gear train. In this
assembly 2 shafts are used, one shaft is connected between tire and gear and second shaft connects gear and
rotating friction pad. Both the gears are meshed with each other. As the wheel rotates in clockwise direction,
the gear attached to it will also rotate. Other gear which is in meshed position with first gear will rotate in anticlockwise
direction. This will help to move friction pad in anti-clockwise direction as that of wheel’s clockwise
motion. Aim for using rotating friction pad is to provide maximum possible friction which results in retardation
of motion, rotating friction pad not only will provide the friction due to contact but will also provide the friction
due to rotation. Calculations regarding speed of gears, and motion of wheel will clearly elaborate the idea, this
slight modification helps in reducing braking time. Important thing in this innovation is that the energy required
to stop the wheel or disc of brakes is transmitted from wheel only
this project is design of bevel gear box
A Gearbox is a device that used for transmitting power from the Power source to
the output shaft. A gearbox has a set of gears that are enclosed in a casing. The gears are
mounted on shafts which rotate freely about their axis
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
1. “Study Of Different types Of Gears”
ddssdddddad
2015
H.T
[Companyname]
4/17/2015
Basics Mechanics OF Machines
Study OF Different types Of
Gears
Assignment: Study Of Different types OF Gears
Submitted To: Mam Mehroz Sana
Submitted By: Syed Mesum Raza Naqvi
Roll No: 2013-Bt-Mech-116
Date: 16/April/2015
Lab No: 2 Study OF Different types Of Gears
2. Objective:
“Study OF Different types Of Gears”
What is Gear:
A gear is a component with in transmission device that transmits rotational force to another gear
or device, gear is different form a pulley in that gear is round wheel which has linkage (teeth) that
mesh with other gear teeth, allowing force to be fully transferred without any kind of slippage.
Depending upon their construction and arrangement gear devices can transmit force at different
speeds, torques in a different directions from the power source, the most common situation is for
a gear to mesh with another gear most important features is that the gears of unequal sizes
combined with each other to get a maximum mechanical advantage so that the rotational speed
and torque of second gear is different from the first one, gears are as shown in the figure below.
Fig (2.1) Fig (2.2)
Power Transmission by Gears:
Power transmission can be defined as the movement of energy from its place of generation to a
location where it is applied to performing useful work as shown in figure.
Fig (2.3) Fig (2.4)
3. Types OF Gears:
According to the position of axes of the shafts:
a) Parallel
1) Spur Gears
2) Helical Gears
3) Rack and Pinion
b) Intersecting (non-parallel)
1) Bevel Gears
c) Non-Intersecting and Non-Parallel
1) Worm and Worm Gears
“According to the position of axis of the shaft”
Spur Gears:
In spur gears the teeth are parallel to the axis of rotation and they transfer power from one shaft to
another parallel shaft, in this case the two parallel and co-planar shafts are connected to each other
by the help of spur gears and the arrangement is known as spur gearing because they have teeth
parallel to the axis of the wheel, spur gears are shown in the figures below.
Uses:
a) Used in electric Screw Drivers
b) Oscillating Sprinkler
c) Windup Alarm Clock
d) Washing Machine
e) Clothes Dryer
Fig (2.5) Fig (2.6)
4. Helical Gears:
Another name given to the spur gearing is helical gearing in which the teeth ate inclined to the axis
of the wheel, in simple word the teeth on helical gears are cut at an angle to the face of the gear,
this gradual engagement makes helical gears operate much more smoothly and quietly than spur
gears. One interesting thing about helical gears is that if the angles of the gears are correct, they
can be mounted on perpendicular shafts adjusting the rotation angle by 90 degrees, the load on
helical gears is distributed to the several teeth resulting in reduce wear.
Fig (2.7) Fig (2.8)
Uses:
a) These are highly used in transmission because they are quieter even at higher speed.
b) Helical gears are durable and used in cars.
c) Helical gears are used in textile industries.
d) Helical gears are also used in rolling mills, elevators, sugar industries, conveyors belts.
e) Helical gears are also used in compressors and in oil industries.
Advantages:
a) Can transmit power b/w parallel or right angle shafts.
b) Helical gears are highly durable and ideal for high load applications.
Disadvantages:
a) There is greater degree of sliding friction b/w the meshing teeth due to the
resultant thrust along the axis of the gears.
b) Efficiency of helical gear is less because helical gear trains have sliding contact
b/w teeth which produce axial thrust of gears.
5. Herringbone Gears:
Helical gears may be double or single, the double helical gears are known as Herringbone gears
in which a pair of gears is kinematically equivalent to a pair of cylindrical disc which attached to
the parallel shaft and having a line contact, to avoid axial thrust, two helical gears of opposite
hand can be mounted side by side, to cancel the resulting thrust forces.
Fig (2.9) Fig (2.10)
Uses:
a) These gears are increasingly use in external gears pumps.
b) These are used for applications that required high pressure.
Advantages:
a) Quite and pulse free flow.
b) Improved load carrying ability.
c) Greater strength.
d) Minimum hydraulic shock
e) Made up of cast iron for wear resistance
Disadvantages:
a) The manufacturing cost is very high due to special shape.
b) During assembly a gear box, aligning is to be given special attention.
6. Rack and Pinion:
Sometimes the gears of the shaft mashes externally and internally with the gears in straight line
such type of gear is known as Rack and Pinion gears, the straight line gear is called as Rack and
the circular is called as Pinion a little consideration will show that with the help of rack and
pinion we can convert linear motion to rotatory motion and vice versa.
Fig (2.11) Fig (2.12)
Uses:
The rack and pinion system assists in power steering of many vehicles including cars and some
trucks.
Advantages:
a) Rack and Pinion give easier and more compact control over the vehicle.
b) Easiest way to convert rotation motion to linear motion.
c) It is cheap.
d) It is compact.
e) It is robust.
Disadvantages:
a) The most adverse advantages of rack and pinion would also be due to the inherent
friction due to this friction it is under a constant wear possibly needing after a certain
time.
b) The rack and pinion can only work with certain levels of friction
7. Bevel Gears:
The two non-parallel but coplanar shafts connected by gears are known as Bevel Gears and the
arrangement is known as bevel gearing, it may also have their teeth inclined to the face of the
bevel in this case these are called as helical bevel gearing.
Fig (2.13) Fig (2.14)
Uses:
a) Bevel gears are used when the direction of a shafts needs to be changed.
b) They are usually mounted on shafts that are 90 degrees apart, but can be designed to
work at other angles as well.
c) These are used in locomotive marine applications and in railway tracks and in inspection
machines.
Advantages:
f) This gear make it possible to change the operating angle.
g) Differing number of teeth on each wheel allows mechanical advantage to be changed.
Disadvantages:
c) One wheel of such gear is designed to work with its complementary wheel and no
other.
d) Must be precisely mounted.
e) The shafts bearings must be capable of supporting significant forces.
8. Worm and Worm Gear:
Boston Gear's worms and worm gears provide an effective answer for power transmission
applications requiring high-ratio speed reduction in a limited space using right angle (90°), non-
intersecting shafts. When properly applied, worms and worm gears provide the smoothest,
quietest form of gearing. Because the efficiency of a worm gear drive depends on the lead angle
and number of starts on the worm - and because increased efficiency is always a goal, the ratio
should be kept as low as possible. To run properly, worms and worm gears used together must
have the same diameter pitch and threads.
Fig (2.15) Fig (2.16)
Uses:
d) Worm gears are used when large gear reductions needed.
e) Many worms gear have interesting property that no other gear set, the worm can
easily turn the gear.
f) Worm gears are widely used in material handling and transportation machinery,
machine tools and automobiles.
g) Advantages:
h) Worms gear drives operates smoothly.
i) They are self-locking.
j) They occupy less space.
k) They have good meshing effectiveness.
l) They can be used to reduce the speed.
m) High velocity ratio cab be obtained.
Disadvantages:
f) Worms gears materials are expensive.
g) Worm drives have high power loss.
h) They produce a lot of heat.
i) A disadvantages is the potential for considerable sliding action leading to low
efficiency.
9. “The Gears According to the Peripheral Velocity”
a) Low Velocity
b) Medium Velocity
c) High Velocity
Low Velocity Gears:
Low velocity gears can be defined has the gears having velocity less than 3m/s are termed as
low velocity gears.
Medium Velocity Gears:
High velocity gears cab be defined as the gears having velocity between 3m/s to 15m/s are called
medium velocity gears.
High Velocity Gears:
The velocity gears can be defined as the gears having velocity more than 15m/s is known as high
velocity gears.
“The Gears According to the type Of Gearing”
a) External Gears
b) Internal Gears
c) Rack and pinion
External Gearing:
In external gearing the gears of two shafts mesh externally with each and the other the larger of
these two wheel is called Spur wheel and the smaller one is called Pinion.
Internal Gearing:
The gears of two shafts mesh internally, the larger one wheel is called Anular and the smaller is
called Pinion, in internal gearing the motion of two wheels are always in same direction.
Rack and Pinion:
Sometimes the gears of the shaft mashes externally and internally with the gears in straight line
such type of gear is known as Rack and Pinion gears, the straight line gear is called as Rack and
the circular is called as Pinion a little consideration will show that with the help of rack and
pinion we can convert linear motion to rotatory motion and vice versa.
10. “The Gears According to the position of teeth on Gears surfaces”
a) Straight
b) Inclined
c) Curved
The spur gears have straight teeth whereas the helical gears have inclined teeth and in case of
spiral gears the teeth are curved over the rim.
Gear Trains:
a) A gear train is two or more gear working together meshing their teeth and turning each
other in a system to generate power and speed.
b) It reduces speed and increases torque.
c) Electric motors are used with the gear system to reduce the speed and increase the torque.
Fig (2.17) Fig (2.18)
11. Types Of gear trains:
a) Simple gear train
b) Compound gear train
c) Planetary gear train
Simple Gear Train:
The most common of the gear train is the gear pair connecting parallel shafts, the teeth of this
type can be spur, helical or herringbone.
Fig (2.19) Fig (2.20)
Compound Gear Train:
a) Compound gear train used for large velocities.
b) Two or more gears may rotate about a single axis .
Fig (2.21) Fig (2.22)