• CN:11-2187/TH
  • ISSN:0577-6686

›› 1964, Vol. 12 ›› Issue (3): 62-75.

• 论文 • 上一篇    下一篇

用有限差分法设计高速凸轮机构

来虔;黄应祥   

  1. 西安交通大学;陕西工业大学
  • 发布日期:1964-06-01

DESIGN OF HIGH-SPEED BY THE METHOD OF FINITE DIFFERENCES

Lai Chien;Hwang Yingchung   

  1. Xi'an Jiaotong University 陕西工业大学
  • Published:1964-06-01

摘要: 本文分析了R.C.Johnson提出的以反复修正凸轮从动件加速度曲线来获得位移曲线一法的不足之处:即很难保证任选的预定运动规律(包括加速度规律和速度边介条件),且繁琐易错。作者建议从任选的加速度曲线出发,利用文中推导的公式,直接算出所要求的位移数值,消除了Johnson方法中的一些缺点。对于从动件系统柔度较大的高速凸轮机构,需按动态来设计其运动规律,作者建议的数值方法,在上述工作条件下仍然适用。论文最后以某发动机的配气凸轮的数据为例,应用文中建议的公式,按动态设计的方法重新设计,并分析其结果。

Abstract: This paper analyses tile defects of the method proposed by R.C.Johnson. Owing to the successive adjustment of the displacement and acceleration curves, it is both a Tedious and complex method,not to say that it almost can't fulfill the arbitrnrily assigned follower motion by utilizing the formulas derived in this paper and starting from tile prescribed -best acceleration curve,one call .calculate the displacement values directly) and tire defects inherent In Johnson's method may be eliminated.The authors' method can also be applied to calculate the cnm profile of high speed duns with it flexible follower system At the end of this paper, an improved design for the cam profile of an engine is presented as an example.