gear less transmissiond

7/24/2019 Gear Less Transmissiond

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GEAR LESS TRANSMISSION

GROUP MEMBERS :-

GUIDE


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INTRODUCTIONTo days world requires speed on each and every field. Hence rapidness

and quick working is the most important. Now a days for achieving

rapidness, various machines and equipments are manufactured by man.The engineer is constantly conformed to the challenges of bringing ideas

and design in to reality. New machines and techniques are being

developed continuously to manufacture various products at cheaper

rates and high quality. The project !"#$!%% T#"N%&'%%'(N) being

compact and *ortable equipment, which is skillful and is having something precise in transmitting power at right angle with out any gears being

manufactured. &ost of the material is made available by our college. The

parts can be easily made in our college work+shop. 'ts price is also less.

This project gives us knowledge, e-perience , skill and new ideas of

manufacturing. 't is a working project and having guarantee of success.

This project is the equipment useful to improve the quality of the gear

being manufactured and can be made in less time, hence we have

selected this project


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CONSTRUCTION

Double acting cylinder2+Here we have used double acting cylinder 't is the

pneumatic actuator, which is actuated using compressed air. The 3orce e-erted by the

compressed air moves the piston in two directions in a double acting cylinder. 'n

principle, the stroke length is unlimited, although buckling and bending must be

considered before we select a particular si4e of piston diameter, rod length and stroke

length.The double acting cylinder consists of+

56 ylinder tube, 76 *iston unit, 86 double cup packing on piston, rod packing of

9(rings, :6 bron4e rod guide, piston rod, ;6 end covers 6

cushion assembly

The cylinder is manufactured from aluminium solid bar with central bore on lathe

machine. 't is then made smooth internally using method of honing and lapping. 'tcontains piston and piston rod, which reciprocates to and froe with the application of

high pressure air. The piston is fitted with the piston ring which is made of Teflon rubber

to make perfect compression of the air. The material used for various parts differs for

different types of cylinders depending upon applications


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WORKING

Here is a wonderful mechanism that carries forcethrough a ?@A bend. Translating rotational motion

around an a-is usually involves gears, which can

quickly become complicated, infle-ible and clumsy+

looking, often ugly. %o, instead of using gears, thistechnology elegantly converts rotational motion

using a set of cylindrical bars, bent to ?@A, in a

clever, simple and smooth process that translates

strong rotational force even in restricted spaces.


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!$+1(B &!H"N'%&

!l+bow mechanism is an ingenious link mechanism of slider and kinematic chain

principle. This is also called as gearless transmission mechanism)

The mechanism is very useful for cornering or transmitting motions at right angles.

However in certain industrial application earless Transmission at #ight "ngle can

also work at obtuse or accurate angle plane can be compared to worm and worm

gear or bevel and pinion gear which are invariably used in the industry for numerous

application. The main feature for mechanism comparatively high efficiency betweenthe input and the output power shafts with regards to the gear efficiencies.

't has elaborately discussed in detail in the entire books o engineering that the gear

drives have very low mechanical efficiencies. %ince 3actor relating to under frictional

3orces between the mating gear teeth, the erratic hunting of the gears, the back lash

between the teeth can not be over come and hence the efficiency can not be more

than CCD (f recent gears of warm bevel type are being manufactured in poly propqlene and

epo-y material where the 3rictional 3orces are comparatively eliminated. !ven

though such gears are used for relatively small applications the efficiency is not more

than :7D.


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ILL O! MATERIAL

SR NO "ART NAME MAT#T$

DECRE"TION

% !RAME &'

%

C SECTION () * +, * + MM

- MOTOR STD%

,.-) /" %++, R"M

0 S/A!T &'-

DIA -, MM * 0), MM

+ /OUSING &'-

DIA 1)MM * 2- MM

) ENT LINK MS 0 DIA %, MM * -+, MM

2 "ULLE$ CI-

DIA +) 3 DIA -), MM

( "EDESTAL EAREING CI+

"-,+

4 ELT leat5er %

A 6 )2

1 ANGEL MS%

0) * 0) * ) MM

%, NUT OLT WAS/ER M'%,

M %,

%% WELDING ROD 6

%- COLOUR 6


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"0E"NT"!%

56 The welded structures are usually lighter than riveted

structures.

76 The welded joints provide ma-imum efficiency which

to impossible innervated joints.

86 "lteration and addition can be easily made.

:6 "s the welded structure is smooth in appearance, it is

good looking.

C6 'n welded structures, tension members are not

weakened. ;6 'n a welded joint has high strength often more than

parent metal.


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DISAD7ANTAGES

56 %ince there is uneven heating and

cooling during fabrication therefore the

members may get distorted as additional

stresses may develop.

76 't requires a highly skilled labour andsupervision.

86 No provision for e-pansion and

contraction in the frame, therefore there is

possibility of cracks.:6 The inspection of welding work is

difficult than riveting work.


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CONCLUSION %ome successful mechanical devices function smoothly however

poor fly they are made while other does this only by virtue of a

accurate construction F fitting of their moving parts.

This projects which looks very simple F easy to construct was

actually very difficult to conceive F imagine without seeing an actual

one in practice. 't is an event a fact in the creative mental process

nit the forces, which predominate among the schemes of the activetinkers. &otions demands to be studied first F we have done that

very thing.

Be find that while acceptable analysis for e-isting mechanism can

often be made quite easily we cannot without insight F imagination

make effective synthesis of new mechanism hence we are mould topresent this our project gear less transmission at ?@G

mechanism6 which we have managed to successfully device after

long F hard input in conceiving its working principle.


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ILIOGRA"/$

&achine design ++++++ #.%. Ihurmi

Bork shop technology +++++ #.I.Jain.

Thermo dynamic +++ 0(&IH/N0B"#

&achine design data book.

www.altavista.com

www.google.com

www.howstuffworks.com
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