FAB Gearshift NEW 2012

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FABRICATION OF AUTOMATIC GEAR

SHIFTING SYSTEM

Submitted in the partial fulfillment of the requirement for the award of

DIPLOMA IN MECHANICAL ENGINEERING

SUBMITTED BY:

1. S. MANIVANNAN 4. B. RAJKUMAR2. G. PUGAZHENDHI 5. S. YUVARAJ

3. S. RAJASEKAR 6. V. GOPU

Under guidance of

Mr. S. JAGADEESAN

MARCH 2009.

DEPARTMENT OF MECHANICAL ENGINEERING.


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BONAFIDE CERTIFICATE

This is to certify that this Project work on

FABRICATION OF AUTOMATIC GEAR SHIFTING SYSTEM

submitted by . Reg. No.

in partial fulfillment for the award of

DIPLOMA IN MECHANICAL ENGINEERING

This is the bonafide record of work carried out by him under our supervision

during the year 2009

Submitted for the Viva-voce exam held on ..

PROJECT GUIDE


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INTERNAL EXAMINER EXTERNAL EXAMINER

ACKNOWLEDGEMENT


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ACKNOWLEDGEMENT

At the outset, we would like to emphasize our sincere thanks to the

Principal Mr. ------------------------------- encouragement and valuable

advice.

we thank our Esquired Head of Department Mr .-------------------- for

presenting his felicitations on us.

We are grateful on our Entourages Mr. ---------------------for guiding

in various aspects of the project making it a grand success.

We also owe our sincere thanks to all staff members of the

Mechanical Department.

Ultimately, we extend our thanks to all who had rendered their co-

operation for the success of the project.


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1. INTRODUCTION

2. SYNOPSIS

3. CONSTRUCTION DETAILS

4. WORKING PRINCIPLE

5. PNEUMATIC COMPONENTS DETAILS

6. SPARE PARTS DRAWING

7. APPLICATION

8. ADVANTAGES AND DISADVANTAGES

9. FEATURES OF THIS PROJECT

10. SAFTY,CARE AND MAINTENANCE

11. PAINTING AND FINISHING

12. COST ESTIMATION

13. CONCLUSION


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14. BIBLIOGRAPHY

15. PHOTO VIEW


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This is a self assessment test on the part of the students to assess his

competency in creativity.

During the course of study, the student is put on a sound theoretical

foundation of various mechanical engineering subjects and of course, to a

satisfactory extent. Opportunities are made available to him to work on

different kinds of machines, so that he is exposed to various kinds of

manufacturing process.


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As a students learn more and more his hold on production technology

becomes stronger. He attains a stage of perfection, when he himself is able

to design and fabricate a device.

This is the project work. That is the testimony for the strenuous

training, which the student had in the institute. This assures that he is no

more a student, he is an engineer.

This report discuses the necessity of the project and various aspects of

planning ,design, selection of materials, fabrication, erection, estimation and

testing.


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To increase the productivity and to overcome skilled labor shortage.

Most of the manufacturing industries are going for automation. The main

arm for us to select the project work is to acquire practical knowledge in the

field of vehicle automation using PNEUMATIC SYSTEM.


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We selected AUTOMATIC PNEUMATIC GEAR CHANGER as

our project work and we used principles of Mechatronics in developing this

project work, the standing mechanism is achieved by reciprocating the

double acting cylinders which controlled by single solenoid operated 5/2

way Directional control valve. This is actuated through the dashboard panel

in front of the driver.

The operating pressure required for this system is 5 to 6 bar. The

maintenance required for this system is less than the other systems. It is used

to reducing the gear shifting time without losing the break power and the

efficiency is improved, the main advantages of our project are elimination of

wear and tear, simple in operation, fast movement in control and less space

by elimination of linkages.


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This unit consists of

1) Gear box unit

2) Pneumatic control system

GEAR BOX UNIT;

in this project the gear drives are arranged in a M.S. sheet fabricated square

shaped box. The gears are arranged in three steps .the gear changer unit is

kept in middle and it is shifted by the control of pneumatic cylinder. The

pneumatic cylinder is actuated through the 5/2way lever operated directional

control valve.

PNEUMATIC CONTROL SYSTEM;

The sliding gear unit is shifted by the pneumatic cylinder of 20 mm dia and

70mm stroke length. This pneumatic cylinder is actuated through the 5/2

way lever operated directional control valve. The valve is actuated through a

lever by hand.


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PNEUMATIC CIRCUIT DIAGRAM

4 2

5

1

3

FRL UNIT

5/2 WAY SOLENOID

OPERATED DC VALVE

AIR CYLINDER

FLOW CONTROL

VALVE


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The gear shifting operation is start when lever is turned in the controlvalve.

When the hand lever is turned, the 5/2 way directional controlled

solenoid valve supplies pressurised air to the air cylinder in the

pneumatic cylinder unit.. the pneumatic circuit is shown in below

figure.


4 2

5

1

3

FRL UNIT

5/2 WAY SOLENOID

OPERATED DC VALVE

AIR CYLINDER

FLOW CONTROL

VALVE


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The piston rod pushes the yoke in the gear changer .thus gear drive changes

to next speed. The cylinder in A- (MINUS) position the middle gear

conncects the bottom shaft gears and in A+ position the middle gear

connects the top shaft gears.


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COMPONENTS USED

FOR PNEUMATIC

GEAR SHIFTER


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COMPONENTS USED FOR PNEUMATIC GEAR

SHIFTER

S.NO COMPONENTSUSED

MATERIAL SIZE QUANTITY

1 M.S.FABRICATED

STAND

MILD STEEL 200X150X100

MM

(WXHXD)

1

2 DOUBLE ACTINGCYLINDER

STEEL 25X50 MM 1

3

5/2 WAY LEVER

OPERATED

DIRECTIONAL

CONTROL

VALVE

ALUMINIUM

CASTING

1/8 INCH 1

4

FLOW CONTROLVALVE

ALUMINIUM 1/8 INCH 1

5

PLASTIC TUBE POLYURETHANE 8X6MM 5 METER

6 VALVE

CONNECTOR

STEEL 1/4INCH 8/6

HOLE

5

7

SPUR GEAR ALLOY STEEL 70,60,50mm

and

60mm,40mm

Dia meter

gears

1 set

8 METAL PRIMER PAINT LITRE 1


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PNEUMATIC CIRCUIT

DESIGN


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PNEUMATIC CIRCUIT DESIGN

PRESSURE = FORCE

AREA

OPERATING PRESSURE = 6 Kg/cm2

Force required for clamping= 50kg

Then diameter of the cylinder is found out as follows;

6 kg /cm2-= 50

Pi x d2/4

50 x 4

D

2

----= ------------------

3.14 x 6

diameter of the cylinder is --------= 32 MM


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DESCRIPTION OF

PNEUMATICCOMPONENTS


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INTRODUCTION TO PNEUMATICS

In engineering field may Machines make use of a fluid or compressed air to

develop a force to move or hold an object

A system which is operated by compressed air is known as Pneumatic

System. It is most widely used the work Piece turning drilling sawing etc.

By the use of Pneumatic System the risk of explosion on fire with

compressed air is minimum high working speed and simple in construction.


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PNEUMATIC COMPONENTS

In engineering field, many machines make use of fluid for developing

a force to move or hold an object. A number of fluid can be used in

devices and system. Two commonly used fluids are oil and compressed

air. A system which is operated by compressed air. A system which is

operated by compressed air is know as pneumatic system.

AIR COMPRESSOR

Compressor is a device which gets air fro the atmosphere and

compresses it for increasing the pressure of air. Thus the compressed air.

Thus the compressed air used for many application.

The compression process requires work in put. Hence a compressor is

driven by a prime mover. Generally an electric motor is used as prime

mover. The compressed air from compressor is stored in vessel called

reservoir. Fro reservoir it be conveyed to the desired place through pipe

lines.


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2. FLTER

In pneumatic system, an air filter is used to remove all foreign matter.

An air filter dry clean air to flow without resistance various materials are

used for the filter element. The air may be passed thorugh a piece metal, a

pours stone felt resin impregnated paper. In some filters centrifugal action

or cyclone action is used to remove foreign matters.

3. PRESSURE REGULATOR

Constant pressure level is required for the trouble free operation of a

pneumatic control., A pressure regulator is fitted downstream of the

compressed air filter. It provides a constant set pressure at the outlet of the

outlet of the regulator. The pressure regulator is also called as pressure

reducing valve or pressure regulating valve.

4. LUBRICATOR

The purpose of an air lubricator is to provide the pneumatic

components with sufficient lubricant. These lubricants must reduce the wear

of the moving parts reduce frictional forces and protect the equipment from

corrosion.

Care should be taken to ensure that sufficient lubrication is provided.

But excessive lubrication should be avoided.


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.

5. FLR Package (or) FRL Package

The air service unit is a combination of following units.

1. Compressed air filter

2. Compressed air regulator

3. Compressed air lubricator

Air Filter, regulator and lubricator are connected together with close

nipples as one package. This unit is know as FLR (Filter, regulator,

lubricator.)

6. PRESSURE CONTROL VALVE :

Each hydraulic system is used to operate in a certain pressure range.

Higher pressure causes damage of components. To avoid this pressure

control valves are fitted in the circuits.

7. Direction control valve :

Directional control valves are used to control the direction of flow.

The design principle is a major factor with regard to service life actuating

force switching times etc.

8. Piston and Cylinder

single acting pneumatic cylinder;


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PNEUMATIC CITCUIT SYMBOL FORSINGLE ACTING PNEUMATIC

CYLINDER;

Pneumatic cylinders (sometimes known as air cylinders) are mechanical

devices which produce force, often in combination with movement, and are

powered by compressed gas (typically air).
http://en.wikipedia.org/wiki/Mechanical_devicehttp://en.wikipedia.org/wiki/Mechanical_devicehttp://en.wikipedia.org/wiki/Forcehttp://en.wikipedia.org/wiki/Motion_(physics)http://en.wikipedia.org/wiki/Compressed_gashttp://en.wikipedia.org/wiki/Compressed_airhttp://upload.wikimedia.org/wikipedia/commons/d/db/Kolv_(pneumatisk).PNGhttp://en.wikipedia.org/wiki/Mechanical_devicehttp://en.wikipedia.org/wiki/Mechanical_devicehttp://en.wikipedia.org/wiki/Forcehttp://en.wikipedia.org/wiki/Motion_(physics)http://en.wikipedia.org/wiki/Compressed_gashttp://en.wikipedia.org/wiki/Compressed_air


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To perform their function, pneumatic cylinders impart a force by converting

thepotential energy ofcompressed gas into kinetic energy. This is achieved

by the compressed gas being able to expand, without external energy input,

which itself occurs due to the pressure gradient established by the

compressed gas being at a greaterpressure than the atmospheric pressure.

This air expansion forces a piston to move in the desired direction. The

piston is a disc or cylinder, and the piston rod transfers the force it develops

to the object to be moved.

When selecting a pneumatic cylinder, you must pay attention to:

how far the piston extends when activated, known as "stroke"

surface area of the piston face, known as "bore size"

action type

pressure rating, such as "50 PSI"

type of connection to each port, such as "1/4" NPT"

must be rated for compressed airuse

mounting method
http://en.wikipedia.org/wiki/Forcehttp://en.wikipedia.org/wiki/Energy_conversionhttp://en.wikipedia.org/wiki/Potential_energyhttp://en.wikipedia.org/wiki/Compressed_gashttp://en.wikipedia.org/wiki/Kinetic_energyhttp://en.wikipedia.org/wiki/Spontaneouslyhttp://en.wikipedia.org/wiki/Pressurehttp://en.wikipedia.org/wiki/Atmospheric_pressurehttp://en.wikipedia.org/wiki/Pistonhttp://www.horrorseek.com/home/halloween/wolfstone/Pneumatics/pnucyl_PneumaticCylinders.html#ActionTypes%23ActionTypeshttp://en.wikipedia.org/wiki/Forcehttp://en.wikipedia.org/wiki/Energy_conversionhttp://en.wikipedia.org/wiki/Potential_energyhttp://en.wikipedia.org/wiki/Compressed_gashttp://en.wikipedia.org/wiki/Kinetic_energyhttp://en.wikipedia.org/wiki/Spontaneouslyhttp://en.wikipedia.org/wiki/Pressurehttp://en.wikipedia.org/wiki/Atmospheric_pressurehttp://en.wikipedia.org/wiki/Pistonhttp://www.horrorseek.com/home/halloween/wolfstone/Pneumatics/pnucyl_PneumaticCylinders.html#ActionTypes%23ActionTypes


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Although pneumatic cylinders will vary in appearance, size and function,

they generally fall into one of the specific categories shown below. However

there are also numerous other types of pneumatic cylinder available, many

of which are designed to fulfill specific and specialised functions.

Single acting cylinders

Single acting cylinders (SAC) use the pressure imparted by compressed air

to create a driving force in one direction (usually out), and a spring to return

to the "home" position


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Double acting cylinders

Double Acting Cylinders (DAC) use the force of air to move in both extend

and retract strokes. They have two ports to allow air in, one for outstroke

and one for instroke.

Other types

Although SACs and DACs are the most common types of pneumatic

cylinder, the following types are not particularly rare:

Rotary air cylinders: actuators that use air to impart a rotary motion

Rodless air cylinders: These have no piston rod. They are actuators

that use a mechanical or magnetic coupling to impart force, typically

to a table or other body that moves along the length of the cylinder

body, but does not extend beyond it.

Sizes

Air cylinders are available in a variety of sizes and can typically range from

a small 2.5 mm air cylinder, which might be used for picking up a small

transistor or other electronic component, to 400 mm diameter air cylinders

which would impart enough force to lift a car. Some pneumatic cylinders

reach 1000 mm in diameter, and are used in place of hydraulic cylinders for

special circumstances where leaking hydraulic oil could impose an extreme

hazard.
http://en.wikipedia.org/wiki/Porthttp://en.wikipedia.org/wiki/Port


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Pressure, radius, area and force relationships

Although the diameter of the piston and the force exerted by a cylinder are

related, they are not directly proportional to one another. Additionally, thetypical mathematical relationship between the two assumes that the air

supply does not become saturated. Due to the effective cross sectional area

reduced by the area of the piston rod, the instroke force is less than the

outstroke force when both are powered pneumatically and by same supply of

compressed gas.

The relationship, between force on outstroke, pressure and radius, is as

follows:

This is derived from the relationship, between force, pressure and effective

cross-sectional area, which is:

F = p A\,

With the same symbolic notation ofvariables as above, but alsoA represents

the effective cross sectional area.

On instroke, the same relationship between force exerted, pressure and

effective cross sectional area applies as discussed above for outstroke.

However, since the cross sectional area is less than the piston area the
http://en.wikipedia.org/wiki/Relation_(mathematics)http://en.wikipedia.org/wiki/Directly_proportionalhttp://en.wikipedia.org/wiki/Air_compressorhttp://en.wikipedia.org/wiki/Air_compressorhttp://en.wikipedia.org/wiki/Saturationhttp://en.wikipedia.org/wiki/Cross_sectional_areahttp://en.wikipedia.org/wiki/Symbolhttp://en.wikipedia.org/wiki/Variable_(mathematics)http://en.wikipedia.org/wiki/Relation_(mathematics)http://en.wikipedia.org/wiki/Directly_proportionalhttp://en.wikipedia.org/wiki/Air_compressorhttp://en.wikipedia.org/wiki/Air_compressorhttp://en.wikipedia.org/wiki/Saturationhttp://en.wikipedia.org/wiki/Cross_sectional_areahttp://en.wikipedia.org/wiki/Symbolhttp://en.wikipedia.org/wiki/Variable_(mathematics)


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relationship between force, pressure and radius is different. The calculation

isn't more complicated though, since the effective cross sectional area is

merely that of the piston less that of the piston rod.

For instroke, therefore, the relationship between force exerted, pressure,

radius of the piston, and radius of the piston rod, is as follows:

Where:

Frepresents the force exerted

r1 represents the radius of the piston

r2 represents the radius of the piston rod

ispi, approximately equal to 3.14159.

VALVE CONNECTORS;
http://en.wikipedia.org/wiki/Forcehttp://en.wikipedia.org/wiki/Pihttp://en.wikipedia.org/wiki/Forcehttp://en.wikipedia.org/wiki/Pi


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POLYURETHANE TUBE ; shortly say PUN tube;

Manual operations involving heavy lifting. Pushing or pulling

motions can be firing for the operations and can induce a monotony which

results in lowered production. Cylinders have been designed to carry out

these movements with a pre determined force and stroke and can be fitted

to synchronize with operation cycles of many machines it is worth wile to

examine the existing plan and methods of movement and to consider the

numberous mechanical applications which the range of pneumatic cylinders

make possible. Quality is to keynote of air cylinder. Engineer them into


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you production setup to get the last ounce of power, speed and efficiency to

save time, space and money.

Piston is cylinder part which moves in a cylinder have corresponding

hole on it. To make the strokes effective there is no gap between them or

with a very tiny gap, part of the micron. The cylinder and its piston have a

glazing surface where there is a contact between them for easy motion of

piston and avoiding wear and tear of both. The outer side of the cylinder

have mountings consists of plate and studs attached with it. But the of these

mountings, the cylinder and piston assembly can fitted on any place of the

piston have threads on it for fastening theother parts (or) accessories

according the operating performed and the application required. We can fit

holding devices, Clamping materials or other metal cutting and forming

ports with which can be movable with the piston.

Pneumatics are used practically in every industry for a wide variety of

manufacturing process, pneumatics equipments are used for multiple

reasons. The best reason is that it is air powered ordinary air turns out to be

very excellent as a fluid power components.

Solenoid Valve :

In order to automate the air flow in our system we have to provide an

electrically controlled valves. Electrical devices can provide more effective


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control, less expensive interlocks having many additional safety features and

simplified automatic sequencing when a machine must operate in a

hazardous area, remote actuation is a desirable. The operator can provide

satisfactory control though electrical devices from a remote point with in a

safe area, uding a semi automatic system and these electrical flow control

devices are also in use in full automation by providing proper action signals.

Push and pull actuation can be priced b solenoids. These movements

are used to open and close the pop pet type valves. These actuations are

done according to the signals given to the solenoid coil when the decided by

the program. The outlet of solenoiud coil when the decided by the program,.

The outlet of solenoid valve is connected to a spray gun, which is going to

spray the paint.


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SOLENOID OPERATED VALVES:

Solenoid valves are electromechanical devices like relays and

contractors. A solenoid valve is used to obtain mechanical movement in

machinery by utilizing fluid or air pressure. The fluid or air pressure is

applied to the cylinder piston through a valve operated by a cylindrical

electrical coil. The electrical coil along with its frame and plunger is known

as the solenoid and the assembly of solenoid and mechanical valve is known

as solenoid valve. The solenoid valve is thus another important

electromechanical device used in control of machines. Solenoid valves are

of two types,

1. Single solenoid spring return operating valve,(5/2)

2. Double solenoid operating valve.

In fig 1 is shown a single solenoid spring return valve in its de-energized

condition. The symbol for the solenoid and the return are also shown. The

solenoid valve is shown connected to the cylinder to help readers understand


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the solenoid valve action. In the de energized condition, the plunger and the

valve spool position as shown in figure 1.


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5/2 WAY VALVE


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In this position of spool, port P is connected to port A and port B is

connected to tank or exhaust (i.e. atmosphere) if air is used. Spring pressure

(S) keeps the spool in this condition as long as the coil is de energized.

Fluid pressure from port P through port A is applied to the left side of the

cylinder piston. Thus the cylinder piston moves in the right direction. Now

when the solenoid coil is energized, plunger is attracted and it pushes the

spool against spring pressure.

The new position of plunger and spool are shown in fig 2.


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In this position of spool, port A gets connected to tank and port P gets

connected to port B. Thus pressure is applied to the cylinder piston from

right and moves the piston rod to the left. At the same time fluid in the other

side is drained out to the tank. When the solenoid coil is again de energized,

the spring (S) will move the spool to its original position as shown in figure

1. Thus, normally when the solenoid coil is de energized the piston rod

remains extended.


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PNEUMATICFITTING


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PNEUMATIC FITTINGS:

There are no nuts to tighten the tube to the fittings as in the

conventional type of metallic fittings. The tube is connected to the fitting by

a simple push ensuring leak proof connection and can be released by

pressing the cap and does not require any special tooling like spanner to

connect (or) disconnect the tube from the fitting.


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SPECIFICATION OF THE FITTING:

Body Material - Plastic

Collect/Thread Nipple - Brass

Seal - Nitrate Rubber

Fluid Used - Air

Max. Operating Pressure - 7 Bar

Tolerance on OD of the tubes - 1 mm

Min. Wall thickness of tubes - 1 mm.

FLEXIBLE HOSES:


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The Pneumatic hoses, which is used when pneumatic components

such as actuators are subjected to movement. Hose is fabricated in layer of

Elastomer or synthetic rubber, which permits operation at high pressure.

The standard outside diameter of tubing is 1/16 inch. If the hose is subjected

to rubbing, it should be encased in a protective sleeve.

ADVANTAGES AND LIMITATIONS

ADVANTAGES:


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The Pneumatic arm is more efficient in the technical field

Quick response is achieved

Simple in constructions

Easy to maintain and repair

Cost of the unit is less when compared to other robotics

No fire hazard problem due to over loading

Comparatively the operation cost is less

The operation of arm is faster because the media to operate is air

Continuous operation is possible without stopping.

LIMITATIONS:

High torque cannot be obtained.

Load Carrying capacity of this unit is not very high (3 5 kg/s)

Silencer may be used, to reduce the noise of compressed air

APPLICATION


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1) DISCHARGE OF WORKPIECE:

The arm fed has wide application in low cost automation. It can be

used in automated assembly lines to pick-up the finished product from

workstation and place them in the bins. It can also be used to pick-up the

raw material and place them on the conveyor belts and vice versa.

2) JOB CLAMPING:

This unit can also be used in clamping operations in certain areas of

mass productions where clamping and unclamping have to be done at high

speeds. The application of this unit is limited to operations, which involves

moderate clamping forces.

3) TRANSFER OF JOBS BETWEEN WORK STATIONS:


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The gripping method used in a low cost automation to move the work

piece from one workstation to another. The combination of an angular

rotary motion is the principle behind this method. The gripper holds the

work rigidly. The to and fro motion is achieved by means of the actuating

cylinder.

4) TOOL CHANGING APPLICATION:

When the pneumatic arms are made smaller in size they can be used

in automatic tool changer in CNC turning and drilling machines, by

attaching suitable tool holding device to the rotary cylinder.


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PNEUMATIC CIRCUIT

DIAGRAM


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4 2

5

1

3

FRL UNIT

5/2 WAY SOLENOID

OPERATED DC VALVE

AIR CYLINDER

FLOW CONTROL

VALVE


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ADVANTAGES

It requires simple maintenance cares.

The moving parts of this system are cooled by the oil itself used.

Thus this project does not require any cooling arrangements.

The safety system for automobile.

Checking and cleaning are easy because of the main parts are screwed


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Initial cost is high

High maintenance cost


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APPLICATIONS


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It is very much useful for care Owners & Auto-garages. This automatic

gear shiftingsystem is used for smooth engagement of gear selecting for the

vehicles.

Thus it can be usedful for the following type of vehicles.

1) MARUTHI

2) AMBASSADOR

3) FIAT

4) MAHINDRA

5) TATA


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SAFETY,CARE AND

MAINTENANCE


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SAFETY,CARE AND MAINTENANCE

Before starting the operation, some of the points to be noted for safetypurpose,

1. Before starting the operation, check the following items

(1) Check the pressurecondition for proper operation .

(2) Check the alignment of gear engagelever in the system

(3) Dont insert the any material or object between the during

operation

(4) Check the shifting alignment and engagement in the system

(5) Check the leakage in the gear shifting system.


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FEATURES OF THIS PROJECT

It can installed easily

LOW electrical power consumption

It can be utilized

It is simple in construction

Low cost

Less weight and easy to handle

Life of system increased

It is simple in operation..


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1.5/2 way solenoid operated DC Valve 1600,00

2. Double acting cylinder 1200.00

3. Valve connectors 5nos 200.00

4.M.S. Fabricated housing unit 1000.00

5. gear box unit 1600.00

6. Painting cost 100.00

7. transport cost 200.00

TOTAL COST 5900.00


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We make this project entirely different from other projects. Since

concepts involved in our project is entirely different that a single unit is used

to various purposes, which is not developed by any of other team members.

By doing this project we gained the knowledge of fabrication work

and how the welding is doing and material selection for particular

components etc.,

It is concluded that any fabrication work can be done with the help of

welding.

We have successfully completed the project work on using welding

work at our Institute.

Once again we express our sincere thanks to our staff members.


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1. WORKSHOP TECHNOLOGY -HAJRA CHOWDRY

2. PRODUCTION TECHNOLOGY -R.S. KHURMI

3. MACHINE SHOP TECHNOLOGY -S.S.MANIAN

4. JIG AND FIXTURE DESIGN - R.K.JAIN

5.FLUID POWER BY -E.SUNDRAMOORTHY


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PNEUMATIC GEAR SHIFTER

OBJECTIVE;

To change the gear speed through the remote operation and to

reduce the mechanical linkages.

DEFINITION OF PROBLEM;

In two wheeler and four wheeler lady driving, the speed changing

lever is difficult to operate while controlling the steering mechanism.moreover the gear shifting mechanical lever linkage should be

nearer to the gearbox and the driver.to overcome such difficulty , this

pneumatic system is introduced.

SCOPE OF THE PROJECT;

The outstanding advantage of pneumatic system is the control

valve which consistently applies a specified load with minimum

effort.

Simple construction than the mechanical linkages.

Operation is very smooth and in this system we can get more

output by applying less effort.


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ADVANTAGES ;

It can be modified to any extend to bring out the required effort.

Its outcome can be utilized properly in the extensive mechanical

field.

Multiple cylinder systems can be put into action according to the

need of different speeds effort.

Compared to hydraulic and mechanical ,pneumatic system is

economical.

No extra skill is required for operating this system.

Operation is very smooth and in this system we can get more

output by applying less effort.

This system can be effectively used for automobile gear box

system. It requires simple maintenance cares

The safety system for automobile.

Checking and cleaning are easy, because of the main parts are screwed.

Easy to Handle.

Low cost automation Project

Repairing is easy.

Replacement of parts is easy.

DISADVANTAGES;

Initial cost is high.


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CYLINDER

3

5/2 WAY LEVER

OPERATEDDIRECTIONAL

CONTROL

VALVE

ALUMINIUM

CASTING

1/8 INCH 1

4

FLOW CONTROL

VALVE

ALUMINIUM 1/8 INCH 1

5

PLASTIC TUBE POLYURETHANE 8X6MM 5 METER

6 VALVE

CONNECTOR

STEEL 1/4INCH 8/6

HOLE

5

7

SPUR GEAR ALLOY STEEL 70,60,50mm

and

60mm,40mm

Dia meter

gears

1 set

8 METAL PRIMER PAINT LITRE 1

1.


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FAB Gearshift NEW 2012

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Transcript of FAB Gearshift NEW 2012