What is the cause of the face milling cutter pattern?

12 7月 2022 | 没有评论 | posted by admin | in Article

Some people will find that there will be knife lines when they are milling, which not only affects the beauty of the workpiece, but also affects the quality of the workpiece. What is the reason for the knife lines? In fact, there are only the following reasons for the occurrence of the general face milling cutter pattern.

1. The size of the feed per tooth

2. Micro-trauma on the cutting edge of the tool

3. Uneven feed speed

4. Mechanical vibration

Carbide Cylindrical Milling Cutter

11 7月 2022 | 没有评论 | posted by admin | in Article

For machining planes on horizontal milling machines. The cutter teeth are distributed on the circumference of the milling cutter, and are divided into straight teeth and helical teeth according to the tooth shape. According to the number of teeth, there are two kinds of coarse teeth and fine teeth. The helical-tooth coarse-tooth milling cutter has few teeth, high tooth strength, and large chip space, which is suitable for rough machining; fine-toothed milling cutter is suitable for finishing.

Milling Features of Taper Shank End Mills

9 7月 2022 | 没有评论 | posted by admin | in Article

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

(2) Interrupted cutting When milling, each tooth is in intermittent cutting, especially in end milling, the milling force fluctuates greatly, so vibration is unavoidable. When the frequency of vibration is the same as or a multiple of the natural frequency of the machine tool, the vibration is most serious. In addition, when high-speed milling, the cutter teeth are subjected to periodic cold and thermal shocks, which are prone to cracks and chipping, which reduces the durability of the cutter.

(3) Multi-knife and multi-blade cutting The milling cutter has many teeth, and the total length of the cutting edge is large, which is conducive to improving the durability and productivity of the tool, and has many advantages. But there are also the following two problems: First, the cutter teeth are prone to radial runout, which will cause uneven load on the cutter teeth, uneven wear, and affect the quality of the machined surface; second, the chip space of the cutter teeth must be sufficient. , otherwise it will damage the teeth.

(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-cut milling, climb milling or symmetrical milling, asymmetrical milling.