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引言正确地决定凸轮机构中的最大允许压力角,不僅是在设计凸轮机构时的一个重要问题,而且是一个相当复雜而难於解决的问题;尤其当凸轮机构不僅用於传遞运动,同时还用於传遞动力的时候,亦即牵涉到效率时,则更为重要和复雜。一般说来,在决定凸轮机构的最大允许压力角时,应该根据下述的原则:就是从凸轮机构的效率、受力情况、工作的可靠性、结构的紧湊性等情况来全面的衡量,侭可能使所选择的压力角数值对上述各点都有利。但我们知道,压力角数
INTRODUCTION Correctly determining the maximum allowable pressure angle in a cam mechanism is not only an important issue in the design of a cam mechanism but also a rather complex and difficult one to solve; in particular when the cam mechanism is used not only for transmitting motion, It is also more important and complex when it is also used to transmit power, ie when it comes to efficiency. Generally speaking, when determining the maximum allowable pressure angle of a cam mechanism, it should be based on the following principles: from the efficiency of the cam mechanism, the situation of stress, the reliability of the work, the compactness of the structure to comprehensively measure,侭 It is possible to make the value of pressure angle selected to be favorable for all the above points. But we know the pressure angle