在机械加工中,常常遇到孔距要求比较高的单向多孔系的零件,例如,我厂生产的行星减速机中的关键零件行星轮架(如图1)。其中三只φ25H7行星齿轮轴孔的加工,一直是厂里的老大难问题.这三个孔的中心对φ292 f8外圆的同轴度要求为φ0.06,孔距为135.1±0.05,与端面D的垂直度为0.04.以前在卧式 In machining, often encountered more demanding hole spacing unidirectional porous parts, for example, I plant production of planetary reducer key parts planet carrier (Figure 1). One of the three φ25H7 planetary gear shaft hole processing, the factory has always been the crux of the problem.The center of these three holes φ292 f8 cylindrical coaxial requirements φ0.06, pitch of 135.1 ± 0.05, and the end face The verticality of D is 0.04. It used to be horizontal