Study on feasibility of abrasive belt low-speed grinding and polishing

SUN Qian-li1，SHEN Xin-gang1，FAN Jin-zhen1，BAO Kai-hua2，GEN Jin-liang1

（1. Hai Tian College，Ningbo Polytechnic，Ningbo 315800，China；

2. Ningbo Polytech Precision Machinery Co.，Ltd.，Ningbo 315800，China）

Abstract：Aiming at the issue that it is of the actual existence of a wide gap between belt grinding speed used in the production and the recommended values of the manual process，taking the four factors，belt granularity，grinding speed，feed rate per revolution，workpiece material，the belt grinding orthogonal experiment was designed to determine the effect of each parameter on the parts polished quality. Examples of the injected embryos mold core parts low speed polishing projects were listed. The process analysis of the part was performed. The machining process was prepared. The low-speed polishing process of the molding surface belt was mainly introduced.

Test results of range analysis show that，the belt granularity has the greatest effort on the surface roughness，much greater than the other three factors，followed by the workpiece material，grinding speed，and the smallest one is the feed per revolution. Project examples show that，if choosing proper belt granularity，even if using a lower grinding speed，it can also get a good polishing.