A quick-return mechanism, shown in Figure P2.5, is used in machine tools. For a constant angular velocity of the driving crank, it produces slow velocity during the cutting phase and then fast return.
a. Identify two loops.
b. Define a coordinate system.
c. For a coordinate system such that the y-axis is going through the points O1 and O2 upwards, outline the solution procedure using solutions in the book for a slider-crank mechanism.
d. Define the time ratio (time of cutting stroke to the time of return stroke) in terms of the distances O1O2 and O2A.
