Transmit power betweens two perandicular shaft using gearless transmission and me need of gear so it's efficiency is high

1.  a project on
A WORKING MODEL OF GEARLESS
TRANSMISSION
BY
•JONDHALE RAVINDRA (S140100873)
•KADAM MAHESH(S1401008)
•KOLPE KISHOR(S1401008)
•KOKATE PRASAD (S1401008)

2.  OVERVIEW
 Need of gearless transmission.
 What is gearless transmission?
 Applications
 Comparison
 Materials
 Specification and manufacturing of parts
 Advantages
 Limitations
 Possible advances
 Conclusion

3.  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.

4.  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

5.  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.

6.  Working

7.  General layout

8. Constructional details
Part Dimensions
Cylinder 60mm(dia.)
Shaft 15mm(dia.)
Links 10mm(dia.), 170mm (length)
Bearings 15mm (inner dia.)

9.  Applications
 Tower clocks
 Gang drilling( multi spindle drilling)
 Lubrication pump for CNC lathe
 Angular drilling between 0- 90 degree
 Movement of periscope in submarines
 Used in vehicles (go-carts)
 Hand driven machines like juice makers sheet
folding machines etc.

10. Geared v/s gearless transmission
Manufacturing methods-
 Costly.
 manufactured on special
purpose machines
 Complex calculations
 No need of
interchangeability
 Used in high torque
applications
 Cooling is a big issue
Manufacturing methods-
 Less costly
 No need of the special
machines
 Less calculations
 Freedom of
interchangeability
 Used in Low torque
applications
 Easy to cool
 Geared  Gearless

11.  Materials
Sr.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

12. • Preliminary shaping of
machine componentsPrimary shaping
• Final shape of machine
component on latheMachining process
• Polishing, lapping, filingSurface finishing
• Arc weldingJoining
• Lubrication, adjustmentSpecial Operations
 Manufacturing of parts

13.  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 system
 Low cost of manufacturing.
 Portability of parts.

14.  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.

15.  Future Aspects
i. Torque bearing capacity can be improved
ii. Flexible bent links can be used
iii. Has a bright future in automation & robotics.
iv. Can be used in automobile industry in near
future. .

16.  Conclusion
• 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.