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Use intuitive sense to judge knife tool wear
- Jul 29, 2018 -

In order to make the turning into the hall smoothly, to ensure the processing quality, improve the production efficiency, and reduce the processing cost, the main measure is to timely judge whether the knife tool is blunt and timely repair.

Everyone knows that the knife tool must be blunt. However, it is not easy to correctly determine whether the tool is blunt and when to change or sharpen the tool.

Over the years, we have used the knowledge of metal cutting theory to guide the production of turning and the teaching of practice. We have realized that the degree of wear on the tool can be judged by the following aspects.

The first is to look at the change in the surface roughness of the workpiece through our eyes to determine the degree of wear of the tool. For example, when the other conditions are the same, when the vehicle is found to be part of the previous machining, the tool can be considered to have reached the wear limit, and the tool should be changed or the tool should be repaired. In addition, we can also judge by changing the shape of the chip, such as the rough surface of the chip surface, or the same chip, for example, the chip is a regular curl discharge in the front cutting, and the chip breaking direction in the chip direction is the chip cutting surface roughness. And so on.


It can also be judged by comparing the color of the chip. If the chip changes from silvery white or light yellow to dark blue, it can be concluded that the tool is blunt.

The second is to listen, that is, the sound produced by the tool when cutting the workpiece to judge the tool sound is the noise that we are used to, and we do not feel annoying to wipe the sound, then it can be concluded that the tool is blunt.

The third is judged by the temperature of the temperature generated during cutting. For example, when disassembling a part, compare the degree of wear of the part tool that is touched.

In short, as long as we can consciously use the feedback information of sensory perception during the cutting process, we can correctly and timely determine whether the tool is blunt, whether it needs to change the tool or repair the tool, so that the cutting work can be smoothly entered. The corresponding guarantee.