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本文的主要目的是研究注塑模具钢自动研磨与球面抛光加工工序的可能性。而完成这种注塑模具钢PDS5的塑性曲面的加工是在数控加工中心实现的。目前,此项研究已经完成了磨削刀架的设计与制造。其中,最佳表面研磨参数是在钢铁PDS5的加工中心测定的。对于PDS5注塑模具钢的最佳球面研磨参数而言,其是以下因素的一系列的组合:研磨材料的磨料为粉红氧化铝,进给量500毫米/分钟,磨削深度20微米,磨削转速为18000RPM。如果用优化的参数进行表面研磨,表面粗糙度Ra值可由大约1.60微米改善至0.35微米。而用球抛光工艺和参数优化抛光,则可以进一步改善表面粗糙度Ra值从0.343微米至0.06微米左右。在模具内部曲面的测试部分中,用最佳参数的表面研磨、抛光,曲面表面粗糙度就可以提高约2.15微米到0.07微米。
The main purpose of this paper is to investigate the possibilities of automatic and spherical polishing of injection mold steels. The completion of this plastic mold steel PDS5 plastic surface processing is implemented in the NC machining center. At present, the research has completed the design and manufacture of grinding tool holder. Among them, the best surface grinding parameters are measured in the steel PDS5 machining center. For the best spherical milling parameters of PDS5 injection mold steel, it is a series of combinations of the following: abrasive abrasive is pink alumina, feed 500 mm / min, grinding depth 20 microns, grinding speed 18000RPM. If surface grinding is performed with optimized parameters, the Ra of the surface roughness can be improved from about 1.60 microns to 0.35 microns. The ball polishing process and parameter optimization polishing, you can further improve the surface roughness Ra value from 0.343 microns to 0.06 microns or so. In the test section of the inner surface of the mold, surface roughness can be increased by about 2.15 microns to 0.07 microns with the best parameter surface grinding and polishing.