此类偏心轴要求两端B、C偏心外圆与A基准外圆偏心方向一致,且偏心尺寸不同,一般均在5mm之内,偏心误差要求小于0.05mm。如图1所示。为了满足以上要求,采用了以下工艺及工装。(1)首先将A基准的所有外圆加工好,在轴的两端均留φ50mm长25mm的工艺夹头,要求夹头与A基准同轴且台阶面 Such eccentric shaft requires both ends B, C eccentric cylindrical and A reference eccentric cylindrical eccentric direction, and eccentric dimensions are different, are generally within 5mm, eccentric error less than 0.05mm. As shown in Figure 1. In order to meet the above requirements, using the following processes and tools. (1) First of all A reference machining of all cylindrical, both ends of the shaft leaving φ50mm length 25mm process chuck, requiring chuck and A reference coaxial and step surface