Factors affecting the service life of tungsten steel milling cutters
Many people do not know that the service life of tungsten steel milling cutters is related to many factors, such as machine conditions and cutting conditions. The reason for finding a tool is that the harder the tool is, the better. In fact, it is so arbitrary. Cutting casually during use not only causes a reduction in machining efficiency, but also affects the life of the milling cutter.
The service life of tungsten steel milling cutters is related to geometric angle, cutting force, cutting heat and cutting amount. Therefore, it is very important to master the durability of the tool. Only by improving the durability of the tool can the tool life be extended and the maximum effect can be fully utilized. Otherwise, the tool is re-grinded too early or cut with a too blunt tool, which is not consistent with the principle of multiple, fast and provincial.
To improve the service life of tungsten steel milling cutters, you need to pay attention to the following aspects:
1. Reasonable choice of cutting amount. The amount of cutting affects the durability of the tool, the cutting depth and feed rate are too large, the cutting force increases, the tool wears quickly, and the cutting speed is too high. Therefore, choosing a reasonable amount of cutting can also extend the service life of tungsten steel milling cutters.
2. Improve the geometric angle of tungsten steel milling cutters. The angle of the tungsten steel milling cutter and the shape of the blade affect the change of the cutting force. When the front angle is increased, the chip deformation is small, the cutting is light, the cutting force and the cutting heat are lowered. Under the premise of ensuring sufficient strength of the tungsten steel milling cutter, the larger rake angle should be taken as much as possible. When the main declination is reduced, the length of the cutting edge participating in the cutting increases, so that the cutting heat is relatively dispersed, and the cutting edge angle is increased, so that the cutting can be performed. Temperature drop.
3. Grasp and adjust the optimal cutting conditions, set good cutting conditions and maintain. Understand the cutting state of the accessory through vibration analysis, etc., and adjust it in time to make the knife have a good working environment. Once the tool change has to be sized, the fastener conditions and cutting conditions are guaranteed to be appropriate.
4. Reasonable selection of milling cutter tool materials. The workpiece material and processing conditions have a great influence on the cutting performance of the tool. To process different materials, you must know how to choose different tools to meet the requirements of cutting.