Comparative experimental study on edge machining of carbide end milling cutter with different tool passivation methods

Abstract

A tool passivation method called the rotating abrasive flow passivation method is proposed as a means to improve tool performance and processing quality. Experiments were conducted to compare the passivation of a carbide end milling cutter by vertical rotating passivation and rotating abrasive flow passivation, revealing the changing law of the tool edge. The results show that the original tool's edge has the smallest radius, characterized by a sharp edge with numerous defects. After vertical rotating passivation, there is slight change in the edge, but defects persist, and the blade shape remains unevenly blunt and circular. In contrast, As the edge after rotating abrasive flow passivation shows the most significant radius change, with some edge defects removed, resulting in a uniformly blunt circular edge shape. The rotating abrasive flow passivation method can not only eliminates edge defects but also presents higher passivation efficiency and a greater rate of change in the cutting edge radius. This method can significantly enhance tool performance, reduce tool wear, and improve machining quality.

Keywords

• tool edge passivation
• rotary abrasive flow
• edge radius
• edge morphology