The spindle speed of CNC machine tools is very high, and the output power of the spindle is relatively large. Compared with traditional cutting methods, the requirements for milling cutters are more stringent, and the requirements for rigidity, precision, durability, and strength are more stringent. At the same time, it also requires dimensional stability, which is convenient for installation and adjustment. These series of problems put forward very strict requirements on the standardization and serialization of the structure and geometric parameters of the milling cutter. To improve the efficiency of milling, the selection of CNC milling cutters is particularly important. Therefore, for the selection of stainless steel milling cutters, the editor will briefly introduce the factors to be considered in the selection of stainless steel milling cutters.

Five aspects to consider when choosing a stainless steel milling cutter

First, the cutting performance of the material of the milling cutter should be considered when choosing a milling cutter. For example, when machining titanium alloys, high-strength steels, and stainless steel workpieces, it is recommended to choose indexable carbide milling cutters with better wear resistance.

Second, we can choose stainless steel milling cutters according to the different processing stages of the workpiece. For example, in the roughing stage, our main purpose is to remove the allowance, then we can choose a large milling cutter with better rigidity, lower precision, and higher chip removal performance. In the semi-finishing and finishing stages, The main thing is to ensure the machining accuracy and product quality of the workpiece. At this time, a finishing milling cutter with high durability and high precision should be selected.

Three, choose the milling cutter according to the characteristics of the area to be processed. When the workpiece processing allows, we can choose a milling cutter with a larger diameter and a smaller ratio of length to diameter; when we process thin-walled and ultra-thin-walled workpieces, the end edge of the over-center milling cutter should have sufficient centripetal angle , in order to reduce the cutting force of the milling cutter and the cutting part. When processing soft workpieces such as aluminum and copper, an end mill with a slightly larger rake angle should be used, and the number of blades should not exceed 4.

Fourth, when we choose a suitable milling cutter, we try to make the size of the milling cutter fit the surface size of the workpiece to be processed. In actual production, for the peripheral contour processing of plane workpieces, end mills are usually used; when milling planes, carbide milling cutters are preferred; when machining bosses and grooves, high-speed steel end mills are preferred; When rough machining the surface of the blank or the hole, it is recommended to use a corn cutter with carbide inserts; for some three-dimensional profiles and variable bevel contours, use ball end milling cutters, ring cutters, conical milling cutters and disc cutters. More knives.

Five aspects to consider when choosing a stainless steel milling cutter

5. For the processing of free-form surfaces, because the end cutting speed of the ball end mill is zero, at this time, in order to ensure the machining accuracy, the cutting line spacing will be very small, so the ball end mill is more suitable for surface finishing. High friendliness.