How to judge the tool life of the cutting machine?
1. Early wear stage
The cutting machine's tool wear process is fast and the time is short. A newly sharpened tool has sharp peaks on the surface. In the process of friction with the chips, the pressure is uneven, and the pressure at the peak is relatively large, causing the peaks to be quickly worn, making the pressure tend to be uniform and the wear speed slowing down.
2. Normal wear stage
The surface of the cutter of the cutting machine is worn out in the early stage, and the peak point is basically smoothed. The pressure on the surface tends to be even, and the wear amount of the cutter VB increases uniformly with time. The wear curve at this stage is basically linear, and its slope represents the wear strength, which is an important indicator for comparing tool performance.
3. The rapid wear stage
After the cutting tool of the load breaker has gone through the normal wear stage, the cutting edge has become blunt, the cutting force and cutting temperature have risen sharply, the cause of wear has undergone qualitative changes, the surface of the tool is fatigued, the performance is reduced, the amount of wear VB sharply increases, and the tool will quickly fail .