铝合金高速切削刀具磨损研究进展

由于铝合金高速切削过程中切削温度高,导致刀具严重磨损,降低了刀具寿命和零件加工精度,因此准确预测刀具磨损和分析刀具磨损规律至关重要。分别从刀具寿命模型和刀具磨损速率模型概述刀具磨损理论模型研究进展,基于切削用量、刀具性质和冷却方式分析刀具磨损规律。从已有研究来看,在铝合金高速切削过程中刀具磨损随切削速度和进给量增大而增大,切削深度无明显规律;常见刀具磨损有黏结磨损、磨粒磨损和扩散磨损,其中黏结磨损为主要刀具磨损机制。

Research Progress of Tool Wear in High speed Cutting for Aluminum Alloy

Due to the high cutting temperature during the high speed cutting of aluminum alloys, the tool wear is severe, which reduces the tool life and machining accuracy. Therefore it is important to accurately predict tool wear and analyze tool wear rules. The research progress of the tool wear theoretical model was summarized from the tool life model and the tool wear rate model, and the tool wear law was analyzed based on the cutting parameter, tool nature and cooling method. On the basis of the current research, about high speed cutting of aluminum alloys, tool wear increases with the increase of the cutting speed and feed rate, there is no obvious rule of cutting depth; common tool wear includes adhesion wear, abrasive wear and diffusion wear, among which adhesion wear is the main tool wear mechanism.