Internal Geneva Mechanism

Aim:- To Create 3D models for driver and driven wheels and motion analysis by rotating the driver wheel at 10rpm save the plots.

Obtaining the forces between driver and driven wheels ,Displacement etc

The Geneva Mechanism translates a continuous rotation into intermittent rotary motion.

There is a pin to the rotating wheel that reaches the slot of driven wheel.The Geneva mechanism consists of different types they are as External, Internal, Spherical.Spherical Are less used.

The Driven wheel has four slots and therefore for each rotation of the drive wheel it advances by 90.The driven wheel has n slots, it advances by 360 per full rotation of the drive wheel.

Creating the components

1) Driver Wheel

2) Driven Wheel

The Plots below are given

1) Angular displacement of driven wheel.

2) Angular displacement of driver wheel.

3) Angular Velocities

At 10 RPM

At 20 RPM

4) Contact Forces

Comparing with Precision and without precision

Comparing forces between driver and driven

At 10 RPM

At 20 RPM

Conclusion :-

Contact force increases with precise contact.

Angular displacement of the driven wheel remains constant as prm increases.

The Precise contact give analytically correct results.