Ball-end milling cutter
s choose different tools according to different purposes. Choosing the correct ball-end milling cutter can not only ensure the stability of processing, but also improve processing efficiency. Machining centers are widely used in the production of fixtures and molds, mechanical parts processing, handicraft carving, medical device industry manufacturing, education and training industries. The tools selected according to different uses are also different. Choosing the right tool can not only ensure the processing Stable and can improve processing efficiency. The influence of the geometric parameters of the ball-end milling cutter on the durability of the tool: The rake angle γ has an obvious effect on the durability of the tool. If the rake angle is too large, the strength of the cutting edge is reduced, the heat dissipation is poor, and it is easy to break; the rake angle is too small, and the cutting force is increased. If the cutting temperature increases too much, the durability will decrease in both cases. The rake angle has a 'hump-shaped' influence on the tool durability, and its peak rake angle has high durability. Decrease the entering angle κγ1, increase the strength of the tool, improve the heat dissipation conditions, and increase the durability. In addition, appropriately reducing the secondary deflection angle κγ and increasing the radius of the tool tip arc can increase the strength of the tool, improve the heat dissipation conditions, and increase the durability of the tool. Tool geometric parameters have a significant impact on tool durability, and it is one of the important signs of whether the tool geometric parameters are reasonable and advanced. Ball-end milling cutter workpiece material's influence on tool durability: The higher the strength and hardness of the ball-end milling cutter workpiece material, the higher the cutting temperature, so the faster the tool wears out, the lower the tool durability. When cutting carbon structural steel, the carbon content of the steel has a greater impact on tool durability. The higher the carbon content, the greater the proportion of cementite and pearlite, the higher the hardness, and the faster the tool wear. Therefore, the tool wears faster when cutting high-carbon steel, and the durability is low; when cutting medium-carbon steel, the tool wear is relatively slow, and the durability is relatively high. In addition, the main factor of the ductility and durability of the processed material is to improve the high elongation of the tool material or the low thermal conductivity, which can make the cutting performance of the cutting material. The use of high hardness materials increases the cutting temperature and reduces the tool durability. Material, its wear resistance is also higher. The cutting part of the material by the tool is also the main factor affecting the durability of the tool. To improve the cutting performance of the tool material, the use of high-hardness materials has high wear resistance.
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