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一、深孔加工存在的问题所谓深孔,就是孔的深度大於孔直径的10倍,即l≥10d;亦有人认为只要l≥(5～7)d 即为深孔。在机械制造上常常遇到深孔的加工,往往对深孔又提出一系列的要求,例如:(1)加工后,孔的轴線应该是直的;(2)孔的轴線与毛坯的轴線一致,即同心度要求;(3)孔应该是圆柱形的,即椭圆度要求;(4)孔的表面质量应该较高,即光洁度的要求。
First, deep hole processing problems The so-called deep hole, is the depth of the hole is greater than 10 times the hole diameter, that is l≥10d; some people think that as long as l ≥ (5 ~ 7) d is deep hole. Deep hole machining is often encountered in machine construction, and often requires a series of requirements for the deep hole. For example: (1) After machining, the axis of the hole should be straight; (2) Axis line, that is, concentricity requirements; (3) The hole should be cylindrical, that is, ovality requirements; (4) The surface quality of the hole should be higher, that is, the requirements of finish.