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深孔类零件,在机械制造中是经常迂到的。尤其是液压机械产品中的油缸、立柱、热板等零件上的孔,其长度与直径之比都超过5～10,都属于深孔类零件。其加工都较复杂。深孔钻削又是深孔加工的第一道工序;它直接影响以后工序的加工精度。对坯料为实体的深孔钻削则必须满足排屑顺利、散热条件好、加工精度高的要求。我们厂的产品,经常有深孔类零件。所用的深孔钻床是内排屑深孔钻床。在生产中经常遇到材料为A_3,钻孔宜径为φ25的零件。因为材料的含碳量低,塑性大,发粘,且加工孔的数量多,用国内目前常用的几种深孔钻头都不能满足要求。
Deep hole parts, in machinery manufacturing is often circuitous. Especially hydraulic machinery products in the cylinder, column, hot plate and other parts of the hole, the length to diameter ratio of more than 5 to 10, are part of the deep hole. Its processing is more complicated. Deep-hole drilling is the first process of deep-hole machining; it directly affects the processing accuracy of the subsequent processes. For the billet solid deep hole drilling must meet the smooth chip removal, heat dissipation conditions, high precision machining requirements. Our factory’s products, often deep hole parts. The deep hole drilling machine used is a chip removal deep hole drilling machine. In the production of materials often encountered A_3, drilling diameter should be φ25 parts. Because of the carbon content of the material is low, plasticity, sticky, and the number of processing holes, with the current domestic use of several deep-hole drill can not meet the requirements.