gearless transmission system

PREPARING A WORKING MODEL OF GEARLESS TRANSMISSION

A project on

BY•ATUL KUMAR (1010440014)•AKASH DEEP MAURYA(1010440002)•AMIT KUMAR PATEL(1010440005)•PHURBA BHUTIA (1010440055)•PRAWAL BISTA (1010440056)

OVERVIEW

Need of gearless transmission.What is gearless transmission?ApplicationsComparisonMaterialsSpecification and manufacturing of partsAdvantagesLimitationsPossible advancesConclusion

Need Of Gearless Transmission

Today’s world requires speed on each and every field.

Engineers are constantly confronted to the challenges of efficient transmission of power.

Gears are costly to manufacture.It is needed to further increase the efficiency of

transmission which cannot be done using geared transmission

Gearless transmission mechanism is capable of transmitting power at any angle without any gears being manufactured.

What Is Gearless Transmission?

Also called elbow mechanism

It is an ingenious link mechanism of slider and kinematic chain principle.

Transmits power at any angle without utilising gears

Working Principle

Transmits the power between two shafts whose axes are at 90 degree through bent links.

Three links slide relatively according to the motion given to input shaft.

Due to this, the rotational motion of input shaft is converted into sliding motion of links which is then converted to rotational motion of the output shaft.

GeneralLayout

Constructional details

Part Dimensions

Cylinder 60mm(dia.)

Shaft 15mm(dia.)

Links 10mm(dia.), 170mm (length)

Bearings 15mm (inner dia.)

Applications

Tower clocksGang drilling( multi spindle drilling)Lubrication pump for CNC latheAngular drilling between 0- 90 degreeMovement of periscope in submarinesUsed in vehicles (go-carts)Hand driven machines like juice makers sheet folding

machines etc.

Geared Gearless

Manufacturing methods-

Costly.manufactured on

special purpose machines

Complex calculations

No interchangeability

Manufacturing methods-Less costly.

No need of special machines

Less calculations

Freedom of interchangeability

Geared v/s gearless transmission

Geared Gearless

Cause of failure-Pitting, corrosion,

erosion and fatigue have severe effect.

Replacement of entire gear set needs to be done.

Cause of failure- Pitting, corrosion,

erosion and fatigue effect less severely

Replacement of defected pin only

Geared v/s gearless transmission

Geared Gearless

Lubrication and cooling-

Complex systemCooling is a big

issue

Lubrication and cooling

SimpleEasy to cool

Geared v/s gearless transmission

Geared Gearless

Torque transmitting capacity

Used in high torque applications

Different speed at any angle is not easily possible

Torque transmitting capacity

Low torque applications

Different speed at any angle is easily done

Geared v/s gearless transmission

Materials S.No Part name Material Quantity

1 Cylinders MS 2

2 Bearings CI 4

3 Shaft MS 2

4 Bent links MS 3

5 Pulley CI 1

6 Frame MS 1

• Preliminary shaping of machine components

Primary shaping

• Final shape of machine component on lathe

Machining process

• Polishing, lapping, filingSurface finishing

• Arc weldingJoining

• Lubrication, adjustmentSpecial Operations

Manufacturing of parts

ADVANTAGES

Complete freedom of Interchangeability.More efficient than gear.Power could be transferred to any desired

angle.Ease of manufacturing.Misalignment of shafts can be tolerated to

some extent.Simpler cooling systemLow cost of manufacturing.Portability of parts.

LIMITATIONS

Does not work at very low starting torque.Improper hole drilling could pose much problem.Sudden load would cause mechanism breakdown.Links are to be replaced after certain cycle time.Speed ratio is always constant 1:1.

Future Aspects

Torque bearing capacity can be improved.

Flexible bent links can be used.

Has a bright future in automation and

robotics.

Can be used in automobile industry in near

future.

• The model works correctly as per the design

• With the help of this system, we can efficiently reduce the cost in power transmission and

• Further advancement in this technology can be made.

Conclusion

THANK YOU.