MEC 411 Lecture Notes - Lecture 3: Plane Curve, Lenovoemc, Pressure Angle

• School: Ryerson University
• Department: Mechanical Engineering
• Course: MEC 411
• Professor: Shudong Yu

Document Summary

Low dwell from 0 to 90 deg. Rise by 1 inch from 90 to 180 deg. High dwell from 180 to 270 deg. Fall by 1 inch from 270 to 360 deg. Meeting the law of cam design: continuous acceleration a; or finite jerk j) Laying a cam profile (max pressure angle < 30 deg) C a m - d e s i g n : 1. Cam rotational axis modified trapezoidal acceleration profiles for the rise and the fall. C a m - d e s i g n : 2. C a m - d e s i g n : 3. During the rise interval, the acceleration profile may be expressed in the following formulas: C a m - d e s i g n : 4. At the start of rise (2 equations) and. At the end of the rise (2 equations) Solve for all 11 unknowns for complete displacement, velocity, and acceleration.