Breaking tool is actually a change in the force of the tool or some of its own factors. The related reasons are seven points: cutting tools, materials, machine tools, technology, environment, control system and auxiliary equipment.
1. The tool condition can also be divided into: tool hardness, tool strength, tool sharpness, length of tool extension, smoothness of tool rake face. The factors related to tool hardness include coating material, grain number of cutting tool itself, and micro geometric angle of tool. The factors related to the strength of the tool are the condition of the material of the cutting tool and the influence of alloying elements. Tool sharpness affects the condition of tool grinding, the number of grains used in grinding wheels, the number of grains of the cutter itself, the degree of front and back angles.
2. The material related factors are whether there are impurities in the material, and the hardness of the material is too large.
3. The machine tool related factor is whether the machine tool we choose is suitable, whether it is suitable for CNC Milling Machining this kind of material, whether the machine tool has hit the level, without the level of beating may cause the cutting knife. Whether the rotational speed of the spindle motor is too low, the spindle motor speed is too low, and the quantity of each tooth for each tooth becomes larger, so the cutting force will become larger and the cutter will be broken.
4. The problem of the CNC milling machining process, whether the machining allowance is reasonable or not, whether there is a staircase remainder, so that in CNC milling machining, there will be a changing cutting force to cause vibration, leading to breaking tools, so it is necessary to increase the semi finishing. The other is whether the amount of the knife is too large or not.
5. The relevant factors of the surrounding environment are whether there is a source around and whether the voltage supplied is stable.
6. The related factors of the control system are whether the path is smooth and the priority mode is correct. It directly affects the starting speed of the machine tool. The higher the starting speed, the more easily the vibration is produced, which will easily lead to breaking tools.
7. The relevant factors of the auxiliary equipment are whether the chip is smooth, whether the two cutting is avoided or not, and the more important is the problem of the upper knife. Is there any dust on the tool and chuck and whether the knife is too strong? The chuck and the nut are not good. It is very important that the tool extension is too large or not.
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