Milling characteristics of taper shank end mill

2 11月 2022 | 没有评论 | posted by admin | in Article

(1) When milling with high productivity, the milling cutter rotates continuously and allows higher milling speed, so it has higher productivity.

(2) In intermittent milling, every cutter tooth is cutting intermittently, especially in end milling. The milling force fluctuates greatly, so vibration is inevitable. When the vibration frequency is the same as or multiples of the natural frequency of the machine tool, the vibration is most serious. In addition, when high-speed milling, the cutter teeth are subject to periodic cold and thermal shocks, which are prone to cracks and blade breakage, reducing the tool durability.

(3) The multi cutter and multi edge cutting milling cutter has many cutter teeth, and the total length of the cutting edge is large, which is conducive to improving the tool durability and productivity, with many advantages. But there are also the following two problems: First, the cutter teeth are prone to radial runout, which will lead to unequal load of cutter teeth, uneven wear, and affect the quality of machined surfaces; Second, the chip space of the cutter teeth must be sufficient, otherwise the cutter teeth will be damaged.

(4) Different milling methods According to different processing conditions, in order to improve tool durability and productivity, different milling methods can be selected, such as up milling, forward milling, symmetric milling, and asymmetric milling.

Advantages of face milling cutter

1 11月 2022 | 没有评论 | posted by admin | in Article

1. High production efficiency

2. Good rigidity and large feed rate

3. It can cut multiple teeth at the same time stably

4. The inserted tooth structure is adopted to facilitate the sharpening and replacement of cutter teeth

5. The service life of the tool is extended

The selection of tool back angle can follow the following principles

31 10月 2022 | 没有评论 | posted by admin | in Article

(1) For processing materials with large plasticity or elasticity, large back angle is adopted to reduce friction between back cutter faces; For processing high strength and high hardness workpieces, small back angle shall be taken to ensure the edge strength; The finishing cutting force is small. In order to reduce friction and improve the quality of the machined surface, a larger rear angle can be used;

(2) During rough machining, the cutting force is large. To ensure the strength of the cutting edge, a smaller back angle can be used; The finishing cutting force is small. In order to reduce friction and improve the quality of the machined surface, a smaller rear angle can be used;

(3) The back angle of high speed steel tool can be 2~3 degrees larger than that of tungsten steel tool;

(4) When the radial wear of the milling cutter will affect the machining accuracy, for example, the diameter of the peripheral tooth of the keyway milling cutter will decrease after the wear, which will directly affect the width of the keyway. The back angle should be appropriately reduced (generally 8 degrees).

(5) The friction between the back of the milling cutter teeth and the workpiece is the direction of re cutting speed, and the cutting thickness is smaller than that of general turning, so the wear mainly occurs on the back cutter face. Therefore, appropriately increasing the back angle of the milling cutter can reduce the wear.