我们在长期生产使用中发现,国产各型剃齿机的顶尖套筒(图1)有如下缺点: 1.回转精度低,保持性差,装配复杂。原顶尖套筒前端采用两套 D36207向心推力球轴承。这种轴承的间隙是在装配时通过修磨内、外隔圈的厚度形成的。调好轴承预载,装配好顶尖后,径向跳动不大于0.01mm。由于没有 We found in the long-term production and use, the domestic top gear of various types of gear shaving machine (Figure 1) has the following disadvantages: 1. Slewing accuracy is low, poor retention, complex assembly. The former top sleeve with two sets of D36207 radial thrust ball bearings. This bearing clearance is assembled by grinding the inner and outer spacer ring thickness formed. Adjust the bearing preload, the assembly of the top, the radial runout is not greater than 0.01mm. Because no