JI Shi-ming, JIANG Wen-yong, CAI Dong-hai, JIN Ming-sheng, CAI Yao-jie, QIU Yi

(Key Lab of Ministry of Education for Province Jointed Mechanical Manufacture & Automation,

Zhejiang University of Technology, Hangzhou 310014, China)

Abstract: In order to solve the problems of the efficient finishing processing on the free surface of moulds, the finishing technology with the soft consolidation abrasives pneumatic wheel was investigated. Soft consolidation abrasive can be supported by flexible when grinding, it is different from abrasive belt and the free abrasive. However, the effective processing time of pneumatic wheel is very short; the wear situation is more serious. Aiming at solving this problem, abrasive wear process and grinding mechanism of soft consolidation pneumatic wheel were discussed; the relationship between the influence and the rotation speed ω, the amount of press down d and the types of abrasive wear was established, and the surface forms of different kinds of abrasive wear was observed. The influencing factors of abrasive wear were evaluated on experiments. The results indicate that the soft consolidation of abrasive wear can be divided into the initial wear stage, the normal wear stage and the severe wear stage. Abrasive wear with the increase of grinding wheel rotation speed ω and the amount of press down d becomes serious, but when grinding wheel rotation speed ω is increased to a certain value, the abrasive wear may decline.

Key words: pneumatic wheel; abrasive wear; rotation speed; amount of press down; abrasive types