CNC milling cutter

22 9月 2022 | 没有评论 | posted by admin | in Article

CNC milling cutters are rotary cutters with one or more teeth for milling. When working, each cutter tooth cuts off the allowance of the workpiece intermittently in turn. Milling cutters are mainly used for machining processes such as steps, grooves, forming surfaces and cutting workpieces.

Cutting tools in a broad sense include both tools and abrasives; at the same time, “CNC tools” include not only cutting blades, but also accessories such as tool holders and tool holders.

round knife

21 9月 2022 | 没有评论 | posted by admin | in Article

The cutting edge is arc-shaped, which is mostly used for round and round dents. It is also very useful in carving traditional flowers. For example, the round surfaces of flower leaves, petals and flower branches need to be conformed with a round knife. The horizontal movement of the circular knife is relatively labor-saving, and it can adapt to large fluctuations and small changes.
There are also positive and negative round knives. The oblique surface is in the groove and the back of the knife is straight. It is a positive round knife. It eats wood deeper and is most suitable for round carving, especially in the blanking and digging stages. The bevel is on the back of the knife, and the straight in the groove is a round knife with a reverse mouth. The shape of the round knife can also be made into a curved shape of an iron rod according to the needs, so as to extend into a deeper part and dig a hole.

Milling Features of Taper Shank End Mills

20 9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.