基于ADAMS的平底从动件凸轮轮廓曲线设计-《郑州大学学报(工学版)》

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摘要:: 传统依据反转法原理，使用ADAMS软件设计凸轮的轮廓曲线时，只能设计尖顶从动件的凸轮机构。这是由于平底从动件凸轮机构中，推杆与凸轮的接触点位置不固定，凸轮轮廓线实际是推杆轮廓的包络线。针对这一问题，本文将推杆轮廓离散化，利用离散后的多个接触点生成多条曲线，将这些曲线进行交集运算，得到了较理想的凸轮轮廓曲线，为ADAMS设计平底从动件凸轮提供新的方法。本文通过将生成的凸轮机构进行仿真模拟，与设计目标作比较，探讨离散点个数与设计的精度关系，得到结论，增加离散点个数可以提高凸轮设计的精度。

Abstract:: Based on the principle of the traditional inversion method, using ADAMS software to design the cam contour curve of the cam design, only the steeple follower. This is because the contact point between the push rod and the cam is not fixed in the cam mechanism with flat bottom follower. The cam contour is actually the envelope of the push rod contour. In order to solve this problem, this paper discretizes the contour of the push rod, generates several curves by using the discrete contact points, intersects these curves, and obtains the ideal cam contour curve, which provides a new method for the design of flat-bottomed follower cam in ADAMS. In this paper, the cam mechanism is simulated and compared with the design objective. The relationship between the number of discrete points and the accuracy of design is discussed. It is concluded that increasing the number of discrete points can improve the accuracy of cam design