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Gearbox Assembly

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rohith prezi

on 27 January 2017

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Transcript of Gearbox Assembly

Reverse Engineering
Types of Drive systems
Gear
Transmission system
A transmission is a machine that consists of a power source and a power transmission system, which provides controlled application of the power [1]
Drive system
The part of an engine, computer or mechanical device which brings about its dynamic movement.[2]
Gear drive




Chain drive
Transmission refers to gearbox which includes gears and gear trains to provide speed and torque [2]
Rope drive
A gear is a rotating machine part having cut teeth, which mesh with another toothed part to transmit torque.
Belt drive
Types of gears
Spur
Bevel

Double helical


Helical


Rack
and pinion


Worm
Presentation design By: Rohith Hallur
Centre for Engineering Education Reasearch

Assembly of gearbox
Instructions before you start work
The given kit contains minute parts, so follow the steps and handle the kit carefully
To keep all small parts of the kit , paper plate is provided
The material given should be returned in same condition
If there are any loss of any parts inform before you leave the class
References
[1] http://www.oxforddictionaries.com/definition/english/drive-system
[2] https://en.wikipedia.org/wiki/Transmission_(mechanics)
http://www.gearconengg.com/images/helical_gear.jpg
http://www.hercus.com.au/media/pics/site/imagecache/4/5/45D572B29E6BEA7CC3FFA840AC1BD8BC.jpg
http://www.pearltrees.com/s/pic/or/double-helical-gears-70835777
http://img.directindustry.com/images_di/photo-g/linear-rack-pinion-hub-20096-2786531.jpg
http://www.linngear.com/wp-content/uploads/2012/10/34.png
http://ls1tech.com/forums/attachments/lt1-lt4-modifications/178047d1241064333-gear-drive-timing-setup-lt1s-geardrive-733x604.jpg
http://www.car-engineer.com/wp-content/uploads/2014/06/HY-VO-chain-drive.png?46ac1a
https://upload.wikimedia.org/wikipedia/commons/4/42/Keilriemen-V-Belt.png
http://www.codecogs.com/users/13108/img_belts_0013.jpg
Engineering education workshop by Vinod K Lohani , Day 2 mechatronics activity presentation.
http://reasontostand.org/wp-content/uploads/2010/11/headGearsReverseOpt.jpg


SPEED CALCULATION FOR SIMPLE GEARS
N1=1000rpm T1=40
N2=? T2=8
SPEED CALCULATION FOR COMPOUND GEARS
T1= 8 N1=1000rpm
T2= 32 N2=?
T3= 16 N3=?
T4= 48 N4=?

VELOCITY RATIO
VELOCITY RATIO=OUTPUT SPEED / INPUT SPEED
FOR 1ST PROBLEM
VR=?
FOR 2ND PROBLEM
VR=?
Assessment
Test duration is 20min.
Online Test will be conducted.
Test closes after the 20minutes itself, so be aware of time.
Test carries 10 Marks.
Test will be of multiple choices and true false, among which one answer is correct. No negative marking.
Malfunction leads to zero marks(No excuses).
Formula to Calculate speed
N1/N2= T2/T1
N= Speed in rpm
T=Number of teeth
http://www.lifelearn.com/wp-content/uploads/2013/11/thank-you.jpg.
https://woodgears.ca/gear/7-21-9-30.png.
The study of engineered objects can lead to important insights about design and, specifically, the design process.
Reverse engineering involves the methodic disassembly and re-assembly of a device, taking care to document, test, analyze and report on the study of its function
The reverse-engineering activity is open-ended, requiring students to choose an engineered device and perform a broad and detailed study of the factors and constraints that dictated its final form/function
1. Documentation of background, including
Areas of use and a characterization of typical users.
Where did it come from?
Was there an evolution with time? Were there distinct transitions of form or use?
2.Description of the typical function
3. Documentation of systematic analysis, including
A list of major components.
Definition of the dissection sequence (if required).
Description of interactions between components.
Summary of working guesses concerning functions.
Summary of equations or physical processes that determine the function.

4. Documentation of procedures.
Reverse Engineering
Centre for Engineering Education Research
Full transcript