关键词: 参数化设计, 凸轮摆杆机构, 凸轮转角偏移, UG 二次开发, NX/Open

Abstract: Aiming at the problems of cam angle deviation caused by follower swing in the parametric design process
of high-speed cam mechanism with oscillating follower, this paper analyzed the causes and effects of cam angle
deviation, proposed a mathematical model of parametric design based on angle compensation, and realized the
accurate mapping from cam parameters to cam profile curve. Taking the improved sinusoidal motion law as an example,
parametric design and characteristic curve visualization of cam mechanism with oscillating follower were realized based
on UG software and secondary development platform, and the accuracy of mathematical model and characteristic curve
was verified by UG motion simulation. The results show that the center angle of the cam profile curve is different from
the cam angle in push and return stages, and that the mathematical model based on the angle compensation can reduce the
maximum acceleration of the cam follower, realize the accurate design of the cam profile curve, simplify the design and
modification process of the cam swing mechanism, and greatly improve the design efficiency.

Key words: parametric design, cam mechanism with oscillating follower, cam angle deviation, UG secondary
development, NX/Open