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轴承内圈的内孔,技术要求很高(尺寸公差要求在0.01～0.015毫米范围内);过去是用附图a所示的方法单件磨削,但生产率很低,赶不上生产的需要。为了解决这个关键,车间技术人员和工人共同研究,改进了如附图b所示的夹具。利用这个夹具可以进行多件磨削,生产效率显著提高。图中1是胎盘,装在磨床主轴上。2是卡爪,3是定位爪,均装在胎盘1上。9是胎筒,孔中装工件6;工件6用螺钉7、压板8压紧。胎筒9依
Bearing bore inner hole, high technical requirements (size tolerance requirements in the range of 0.01 ~ 0.015 mm); the past is the method shown in Figure a single grinding, but the productivity is very low, can not keep up with the production needs. In order to solve this problem, workshop technicians and workers jointly studied and improved the fixture shown in Figure b. With this fixture can be multiple grinding, production efficiency significantly improved. Figure 1 is the placenta, mounted on the grinder spindle. 2 is a claw, 3 is a positioning claw, are mounted on the placenta 1. 9 is the tire tube, the hole in the workpiece 6; 6 with a screw 7, the pressure plate 8 compression. Tire cylinder 9 according to