Question

you are designing a single-dwell cam/follower mechanism, and have decided to divide the cam's program into just two segments since the rise and return need to be symmetrical. the first segment is the rise/return, and the second segment is the dwell. if the rise takes 55 degrees of cam rotation, at what cam angle of rotation does the dwell begin?

Answer 1

The dwell of a single-dwell cam/follower mechanism begins at 110 degrees of cam rotation, considering that both rise and return are 55 degrees and symmetrical.

Step-by-step explanation:

The question pertains to the design of a single-dwell cam/follower mechanism, focusing on the cam rotation angles associated with different segments of the cam profile. In this scenario, the rise segment takes 55 degrees of cam rotation. Since the rise and return are symmetrical, the return also takes 55 degrees of cam rotation. Therefore, the dwell begins immediately after the return segment is completed. To calculate the start of the dwell:

• Rise angle = 55 degrees
• Return angle (symmetrical to rise) = 55 degrees

The total angle covered by rise and return is 55 degrees + 55 degrees = 110 degrees. Hence, the dwell initiates at 110 degrees of cam rotation.