基于注塑模具钢研磨和抛光工序的自动化表面处理2

中文译文
基于注塑模具钢研磨和抛光工序的自动化表面处理2(中文3200字,英文2600字)
摘要
这篇文章研究了注塑模具钢自动研磨与球面抛光加工工序的可能性，它可以在数控加工中心完成注塑模具钢PDS5的塑性曲面。这项研究已经完成了磨削刀架的设计与制造。 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是以下一系列的组合：研磨材料的磨料为粉红氧化铝，进给量50毫米/分钟，磨削深度20微米，磨削转速为18000RPM。表面粗糙度Ra值可由大约1.60微米改善至0.35微米，通过用优化的参数进行表面研磨。 如果用球抛光工艺和参数优化抛光，还可以进一步改善表面粗糙度Ra值，一般从0.343微米至0.06微米左右。而在模具内部曲面的测试部分，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微米至0.07微米。
关键词: 自动化表面处理  抛光  磨削过程  表面粗糙度  田口方法

英文原文
Automated surface finishing of plastic injection mold steel with spherical grinding and ball burnishing processes
Abstract
This study investigates the possibilities of automated spherical grinding and ball burnishing surface finishing processes in a freeform surface plastic injection mold steel PDS5 on a CNC machining center. The design and manufacture of a grinding tool holder has been accomplished in this study. The optimal surface grinding parameters were determined using Taguchi’s orthogonal array method for plastic injection molding steel PDS5 on a machining center. The optimal surface grinding parameters for the plastic injection mold steel PDS5 were the combination of an abrasive material of PA Al2O3, a grinding speed of 18 000 rpm, a grinding depth of 20 μm, and a feed of 50 mm/min. The surface roughness Ra of the specimen can be improved from about 1.60 μm to 0.35 μm by using the optimal parameters for surface grinding. Surface roughness Ra can be further improved from about 0.343 μm to 0.06 μm by using the ball burnishing process with the optimal burnishing parameters. Applying the optimal surface grinding and burnishing parameters sequentially to a fine-milled freeform surface mold insert, the surface roughness Ra of freeform surface region on the tested part can be improved from about 2.15 μm to 0.07 μm.
Keywords Automated surface finishing • Ball burnishing process • Grinding process • Surface roughness • Taguchi’s method