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在盘形凸轮型面的仿形加工中,刀具直径的实际数值必须符合设计靠模时计算出的刀具直径理论值,否则将产生凸轮型面的制造误差。本文将分析刀具误差对凸轮型面制造误差的影响和误差值的计算方法,以及提高凸轮型面加工精度的措施。盘形凸轮仿形加工按其运动原理,可以分为直动式仿形加工和摆动式仿形加工。一、仿形加工外凸轮型面的爿造误差直动式仿形加工外凸轮型面制造误差的计算方法,根据凸轮型面曲线表示方法的不同,有二种(1)公法线法:它是通过对凸轮型面曲线的法线的一系列运算,最后计算出其制造误差值。其特点是计算精确度高,但计算公式较繁复,计算工作量大。一般要借助于电子计算机进行误差的计算。(2)近似公式法:
In the cam profile machining, the actual value of the tool diameter must meet the theoretical value of the tool diameter calculated by the design of the cam, otherwise the manufacturing error of the cam profile will occur. This article will analyze the impact of the tool error on the manufacturing error of the cam profile and the calculation method of the error value, and the measures to improve the machining accuracy of the cam profile. Disk cam profile processing according to their principle of motion, can be divided into direct-acting profiling and oscillating profiling. First, the profile processing outside the cam profile error 直 Direct-acting profile machining outside the cam profile manufacturing error calculation method, according to the cam profile curve representation, there are two (1) common normal method: it Through the normal curve of the cam profile a series of operations, the final calculation of the manufacturing error. It is characterized by high computational accuracy, but the calculation formula is more complex, computational workload. Generally use the computer to calculate the error. (2) approximate formula method: