Determine:

1. sliding velocities at engagement at an disengagement of pair of a teeth, and

2. Contact ratio.

Subject: Kinematics of Machinery

Topic: Gears and Gear Trains

Difficulty: Medium

Given $\phi= 20^{\circ}$; t= 30; T= 50; m=4; N= 1000 rpm; or $\omega_{1}=2\pi\times(1000/60)=104.7 rad/s$.

1.Sliding velocities at engagement and at disengagement of pair of a teeth

First of all, let us find the Radius of the addendum circles of the smaller gear and the larger gear.

We know that,

Addendum …