对于键槽对称度误差的评定,目前有几种不同的计算公式和结果处理方法,本文就正确的计算公式予以介绍。一、键槽对称度误差的成因在评定对称度误差之前,应分析产生误差的原因。归纳起来为四种: (一)从横向看: 1.刀的中心面(或轴线)不通过工件轴线[见图1a)]。 2.进刀方向不通过工件轴线[见图1b)]。 (二)从纵向看。 1.进刀方向不平行于轴线方向[见图2a)]。 2.工件在进刀过程中发生转动[见图2b)]。横向的两种情况对工件产生误差的效果是一样 There are several different calculation formulas and result processing methods for the evaluation of the keyway symmetry error. The correct calculation formula is introduced in this paper. First, the keyway symmetry error causes Before assessing the symmetry error, you should analyze the causes of the error. To sum up for the four: (A) from a horizontal perspective: 1 knife center plane (or axis) does not pass the workpiece axis [see Figure 1a)]. 2. Infeed direction does not pass the workpiece axis [see Figure 1b)]. (B) from a vertical perspective. 1. The infeed direction is not parallel to the axis [see Figure 2a)]. 2. The workpiece rotates during the feed (see Figure 2b)]. Horizontal two kinds of situations on the workpiece error is the same effect