The selection of the cutting edge angle of the tool has an important impact on the life of the tool. Small cutting edge angle tool in the cutting process generates less cutting force, relatively slow wear, suitable for processing softer materials, such as aluminum alloy, copper, etc.. Large flute angle tools have higher strength and rigidity and are suitable for machining harder materials, such as hardened steel, cemented carbide and so on.
Causes and processes of tool wear
The causes of tool wear include abrasive wear, cold welding wear, diffusion wear and oxidative wear. The process of tool wear is categorized into initial wear stage, normal wear stage and sharp wear stage. Understanding these causes and processes of wear helps in taking measures to extend tool life.
Measures to improve tool life
Control of cutting force and cutting speed: Properly control the cutting force and cutting speed of the tool, reduce the temperature of the machining area, and extend the life of the cutting fluid.
Choose reasonable cutting methods: use the pendulum cutting method, spiral interpolation method and large feed cutting method to reduce the cutting force and cutting zone temperature.
Ensure timely and effective chipbreaking: control the length of chips, ensure timely and effective chipbreaking, and reduce the cutting temperature.
