一、概述 由于产品型号不断地更新换代,对接插件小型化、微型化的要求越来越高,在塑料成形模具的制造中,高精度,高密度的小孔加工成了接插件生产中的一大难关。传统工艺方法要在座标镗床上钻孔、铰孔后淬火、但孔的位置度超差,使孔壁表面氧化,表面粗糙度达不到要求。例如某钻模有19—ф1+0.015孔,孔距±0.01,曾连续三次因淬火变形而报废,严重地 First, an overview As the product model is constantly upgrading, docking connector miniaturization, miniaturization requirements are getting higher and higher, in the manufacture of plastic mold, high-precision, high-density hole processing into a connector in the production of a Big trouble. The traditional method of drilling boring machine in the coordinate boring machine, after reaming quenching, but the location of the hole over tolerance, the hole wall surface oxidation, surface roughness does not meet the requirements. For example, a drilling die with 19-ф1 +0.015 holes, pitch ± 0.01, three consecutive times because of quench deformation and scrapped, seriously