The document presents the design and fabrication of a gearless angular power transmission system by a group of mechanical engineering students under the guidance of a professor. It details the working mechanism involving multiple pins for smooth operation, design calculations for components, materials used, and various applications such as small load transmission and angular drilling. Additionally, the advantages of this system include efficiency, cost-effectiveness, and tolerance for shaft misalignment.

1. DESIGN AND FABRICATION OF GEARLESS
ANGULAR POWER TRANSMISSION SYSTEM
GROUP MEMBERS
B NITHIN KUMAR (AC14UME250)
S RAHUL (AC14UME259)
R RANJITH (AC14UME261)
M YOGESH (AC14UME293)
UNDER THE GUIDANCE OF
Prof. P. SENTHIL KUMAR
Assistant Professor,
Department of Mechanical Engineering
ADHIYAMAAN COLLEGE OF ENGINEERING
DEPARTMENT OF MECHANICAL ENGINEERING

2. OBJECTIVE
• To design and fabricate of gearless angular power
transmission system.

3. INTRODUCTION
Multi-Angular Gearless Drive is a motion transmitting device used for
transmitting motion at multiple angles between the driving and the driven shaft.
The scrutiny of this mechanism would reveal that it comprises of pins ranging
from 3 to 8 pins per assembly and with increase in the number of pins operation
becomes smoother. These pins slide inside symmetrically spaced holes
machined on solid cylindrical disc. Thus, the sliding pairs help the shaft to
revolve at various angles.

4. LITERATURE SURVEY
AUTHORS: TITLE: DESCRIPTION:
R.SOMARAJ,
B.SAILESH
DESIGN AND FABRICATION OF
GEARLESS POWER TRANSMISSION
FOR SKEW SHAFTS.
In this transmission system number of
pins are links used must be odd 3,5,7,9…
pins or links are fixed in the drilled holes
at the both shafts ends due to which
motion is transferred.
ASHISH KUMAR,
PUNEET PAWAR
MULTI ANGULAR GEARLESS
DRIVE.
Motion is transmitted from driving to
driven shaft through the sliding pairs
Which remain either straight or bent
using universal joints, as per
requirement between the shafts.

5. DESIGN CALCULATIONS
LITERATURE SURVEY
FABRICATION
RESULT AND DISCUSSIONS
MATERIAL SELECTION
METHODOLOGY

6. 2D MODEL

7. 3D MODEL

8. BILL OF MATERIALS
S.NO
NAME OF
PARTS
MATERIALS QUANTITY
1 Shaft Mild Steel (45C8) 2
2 Hub Mild Steel (45C8) 2
3 Links
Stainless Steel
(X6Cr17)
6
4 Bearing (P204) Mild Steel 2

9. DESIGN CALCULATIONS
Power of motor:
Power, P= 2πNT/60
P= 746watts×0.5 (for ½ HP motor)
P= 373 watts
T= P×60/2πN
T=3.9576 N-m
Torque, T=3957.6 N-mm

10. Design of Shaft:
Considering 25% of overload,
Tmax= T×1.25
Tmax= 4947 N-mm
T= (π/16)×τ×dᵌ [Shear stress, τ=40N/mm²
d= 8.57 P.S.G. Design data book]
d= 9 mm
Taking Factor of Safety= 2
d= d×2
d= 18 mm

11. Design of Hub:
Diameter of Hub,
D= 2d+13 [P.S.G. Design data book]
= 49
D= 50 mm
Force acting on the Hub,
T= F×r
F= T/r
F= 197.88 N

12. Design of Links:
Torque on each shaft,
T/3= 1649 n-mm
T= π/16×τ×dᵌ
= 5.943
d= 6 mm

13. APPLICATIONS
• Small and Medium load transmission
• Gang drilling (multi spindle drilling)
• Angular drilling between 0-180 degree
• Movement of periscope in submarines
• Angular machining i.e. shape cutting.

14. ADVANTAGES
• Complete freedom of Interchange ability
• More efficient than gear
• Power could be transferred to any desired angle
• Ease of manufacturing
• Misalignment of shafts can be tolerated to some
extent
• Low cost of manufacturing
• Portability of parts.

15. REFERENCE
• Ashish Kumar, Puwar, Sagar Rana, Shishir Bist “Multi-Angular Gearless
Drive” International Journal of Scientific and Engineering Research, Volume 6,
Issue 7, July-2015 (pg.no: 974-977).
• R. Somaraj, B. Sailesh “Design and Fabrication of Gearless Power
Transmission for Skew Shafts” International Research Journal of Engineering
and Technology (IRJET), Volume:04, Issue:04, April-2017 (pg.no:1018-1023).
• Jagushte G.S, Kudalkar Hrishikesh, Patil Vikas, Vishal “Design, Analysis and
Fabrication of Gearless Transmission by Elbow Mechanism” IJSRD-
Internationa Journal for Scientific Research and Development, Volume 4, Issue
02, 2016.
• Neeraj Patil 1, Jayesh Gaikwad 2, Mayur Patil 3, Chandrakant Sonawane 4,
Shital Patel 5 U.G Student, Department of Mechanical Engineering, Bharati
Vidyapeeth College of Engineering Navi Mumbai, Maharashtra.Assistant
Professor, Department of Mechanical Engineering, Bharati Vidyapeeth College
of Engineering Navi Mumbai, Maharashtra.

16. REFERENCE
• Navneet Bardiya1, karthik.T2, L Bhaskara Rao3, School of Mechanical and
Building Sciences VIT University Chennai campus, Chennai, India Email:
navneet.bardiya2013@vit.ac.in1, karthik.t2013@vit.ac.in2,
bhaskararao@vit.ac.in3.
• Mahantesh Tanodi, Gearless Power Transmission- L Pin Coupling ,International
Journal of Ethics in Engineering & Management Education Website:
www.ijeee.in (ISSN: 2348-4748, Volume 1, Issue 5, May2014) .
• Atish Lahu Patil1,Vinay Prabhakar Jadhav2, Sagar Padmakar Patil3, Roshan
Suresh Shelar4, Gearless Mechanism in Right Angle, International Journal on
Recent and Innovation Trends in Computing and Communication. ISSN: 2321-
8169 Volume: 4 Issue: 4 [145 – 149]

17. THANK YOU