Tungsten steel milling cutter is a tool made of tungsten steel (tungsten carbide, also known as tungsten-titanium alloy). Generally mainly used in CNC machining centers and CNC engraving machines. It can also be installed on an ordinary milling machine to process some relatively hard and uncomplicated heat treatment materials. Tungsten steel milling cutters are widely used and use high-speed processing. The hardness of tungsten steel milling cutter is Vickers 10K, second only to diamond. Because of this, tungsten steel milling cutters are not easily worn, and they are brittle and hard and are not afraid of annealing.
Tools with high tip strength and high rigidity are more effective for high-hardness materials. It is important to select a coating with excellent properties such as high temperature resistance and heat resistance when milling tungsten steel. It has excellent tool wear resistance due to its high coating hardness and high oxidation temperature resistance. At the same time, it is effective to use a thermal expansion tool holder with high clamping force. Until now, thermal expansion tool holders are often used mainly for precision machining due to their high runout accuracy. It has strong clamping force and is not prone to chatter, so it is widely used for rough machining, and it can also achieve stable machining of tungsten steel milling that is prone to chipping.
Many people don't know that the service life of tungsten steel milling cutters is related to many factors, such as machine tool conditions, cutting conditions, etc. The reason for blindly looking for knives is that some people even think that the harder the knives, the better. In fact, this is too arbitrary. Cutting casually during use will not only cause a decrease in processing efficiency, but also affect the service life of the milling cutter.
The service life of tungsten steel milling cutters is related to factors such as geometric angle, cutting force and cutting heat, and cutting amount. Therefore, it is very important to master the durability of tungsten steel milling cutters. Only by improving the durability of the cutter can the service life of the tungsten steel milling cutter be extended and its role fully exerted. Otherwise, regrinding the tool too early or cutting with a tool that is too blunt will not comply with the principle of more, faster, and less.
So to improve the service life of tungsten steel milling cutters, you should pay attention to the following aspects:
(1) Reasonably choose the cutting amount. The cutting amount affects the durability of the tungsten steel milling cutter. If the cutting depth and feed amount are too large, the cutting force increases, the tungsten steel milling cutter wears quickly, and the cutting speed is too high. Therefore, choosing a reasonable cutting amount can also extend the service life of the tungsten steel milling cutter.
(2) Improve the geometric angle of tungsten steel milling cutter. The angle and blade shape of tungsten steel milling cutter affect the change of cutting force. For example, when the front angle increases, the chip deformation is small, the cutting is light, and the cutting force and cutting heat are reduced. On the premise of ensuring that the tungsten steel milling cutter has sufficient strength, the rake angle should be as large as possible. When the main deflection angle decreases, the length of the cutting edge participating in the cutting increases, so that the cutting heat is relatively dispersed, and the tip angle increases, which can make the cutting The temperature drops.
(3) Grasp and adjust the best cutting conditions, set good cutting conditions and maintain them. Understand the cutting status of the accessory through vibration analysis, etc., and make timely adjustments to ensure a good working environment for the tungsten steel milling cutter. Once the tungsten steel milling cutter is replaced, the size must be adjusted to ensure that the fastener conditions and cutting conditions are appropriate.
(4) Reasonably select milling cutter tool materials. The workpiece material and processing conditions have a great influence on the cutting performance of tungsten steel milling cutters. To process different materials, you must know how to choose different tools to adapt to the requirements of cutting processing.
