我车间轴类零件较多,研磨顶尖孔的工序频繁。过去我们一直使用光面硬质合金顶尖来研磨顶尖孔,耗费工时长,质量有时也达不到技术要求,甚至往往因顶尖孔研磨质量不好,致使零件报废。后来,我们对光面硬质合金顶尖研磨工件的过程作了观察分析,发现,研磨时轴向挤压力很大,这样研磨剂被挤出,使研磨效率降低;研磨中遇到个别“硬”质点时,则会改变顶尖孔几何形状,破坏精度。我们针对上述情况,改进、设计了五稜顶 I workshop shaft parts more, grinding the process of the top hole frequently. In the past we have been using smooth cemented carbide top to grind the top hole, long working hours, the quality sometimes fails to meet the technical requirements, and often due to the poor quality of the top hole grinding, resulting in parts scrapped. Later, we observed and analyzed the process of polishing cemented carbide top-polished workpiece and found that the axial crushing force during grinding was so great that the abrasive was squeezed out to lower the grinding efficiency. In the grinding, individual “hard” "When the particle, it will change the top hole geometry, damage accuracy. We targeted the above situation, improvement, design pentacle top