Question

The crank OP of a crank and slotted-lever mechanism as shown in figure below rotates at
100 rpm in the counter-clockwise direction. Lengths of various links are OP = 90 mm,
OA = 300 mm, AR = 480 mm and RS = 330 mm. The slider move along an axis
perpendicular to AO and is 120 mm from O. Determine the velocity of the slider during
cutting and return strokes.

Answer 1

For us to obtain the velocity of the slider during cutting and return strokes we need to draw the velocity and acceleration diagrams

$1 unit = 0.01 mm\\$

Velocity diagram

$2.1219*4=8.4876 m/s\\ V_{p_2p_1}=1.2929*4=5.1716 m/s$

Acceleration diagram

$1.3206*500=660.3m/s\\ a_{SR}=0.1280*500\\ a_{SR}=\sqrt{a_{Rad}^2+a_{Tan}^2}\\ (0.1280*500)^2-7.45^2=(\alpha R)^2\\ \alpha=192.62$