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一、引言随着生产的发展,对机构的运动要求越来越高。凸轮从动件的运动规律从几种基本运动规律发展成多种改进型运动规律。改进型运动规律是由2种或2种以上的基本运动规律(或它们的一部分)在一定条件下组合起来,从而满足工艺要求。在共轭凸轮打纬及共轭凸轮引剑的机构中,目前我国均应用半个简谐运动(亦称余弦加速规律)和半个摆线运动(亦称正弦加速规律)组合起来的改进型运动规律
I. INTRODUCTION With the development of production, the demands on the movement of institutions are getting higher and higher. The law of the movement of the cam follower develops from several basic laws of motion into many improved laws of motion. The improved law of motion is composed of two or more basic laws of motion (or parts thereof) under certain conditions to meet the process requirements. In the mechanism of conjugate cam weft-striking and conjugate cam-guiding, at present, China uses half-simple harmonic motion (also known as the law of cosine acceleration) and half-cycloid motion (also known as sinusoidal acceleration law) combination of improved pattern of motion