Summary of Common Problems and Solutions for Alloy Milling Cutters

When optimizing the milling effect, the blade of the alloy milling cutter is another important factor. In any milling, if the number of blades participating in cutting at the same time is more than one, it is an advantage, but the number of blades participating in cutting at the same time is a disadvantage. When cutting It is impossible for each cutting edge to cut at the same time. The required power is related to the number of cutting edges participating in the cutting. In terms of chip formation process, cutting edge load and machining results, the position of the milling cutter relative to the workpiece plays an important role. In face milling, with a cutter about 30% larger than the width of cut and with the cutter positioned close to the middle of the workpiece, the chip thickness will not vary much. The chip thickness in the lead-in and out-cut is slightly thinner than that in the middle cut.

In order to use a sufficiently high average chip thickness/feed per tooth, determine the correct number of milling cutter teeth for the process. The pitch of a milling cutter is the distance between the cutting edges. According to this value, milling cutters can be divided into 3 types - close-tooth milling cutters, sparse-tooth milling cutters, and special-tooth milling cutters.

The main deflection angle of the face milling cutter is also related to the chip thickness of milling. The main deflection angle is the angle between the main cutting edge of the blade and the surface of the workpiece. There are mainly 45-degree, 90-degree and circular blades. The cutting force The direction change will change greatly with the different entering angle: the milling cutter with the entering angle of 90 degrees mainly produces radial force, which acts in the feed direction, which means that the machined surface will not bear too much pressure , which is a comparison for workpieces with weaker milling structures.

The milling cutter with a leading angle of 45 degrees has roughly equal radial cutting force and axial force, so the generated pressure is relatively balanced, and the requirements for machine power are relatively low. It is especially suitable for milling short chip materials that produce broken chips artifact.

Milling cutters with round inserts mean that the entering angle varies continuously from 0 degrees to 90 degrees, depending mainly on the cut. The cutting edge strength of this kind of insert is very high. Since the chips generated along the long cutting edge direction are relatively thin, it is suitable for large feed rates. The direction of cutting force along the radial direction of the insert is constantly changing, and the pressure generated during processing Will depend on cutting. The development of modern blade geometry makes the circular blade have the advantages of stable cutting effect, low demand for machine tool power, and good stability. , it is no longer a good rough milling cutter, it is widely used in both face milling and end milling.