Knowledge about milling

Categories:Industry News
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Time of issue:2020-06-15
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(Summary description)When optimizing the milling effect, the blade of the milling cutter is another important factor. In any milling, if there are more than one blades participating in the cutting at the same time, it is an advantage, but too many blades participating in the cutting at the same time are the disadvantages. It is impossible for a cutting edge to cut at the same time. The required power is related to the number of cutting edges participating in the cutting. The position of the milling cutter relative to the workpiece plays an important role in terms of chip formation, cutting edge load, and processing results. In face milling, use a milling cutter that is about 30% larger than the cutting width and position the milling cutter close to the center of the workpiece, then the chip thickness does not change much. The chip thickness during cutting is slightly thinner than when cutting at the center.

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Knowledge about milling

(Summary description)When optimizing the milling effect, the blade of the milling cutter is another important factor. In any milling, if there are more than one blades participating in the cutting at the same time, it is an advantage, but too many blades participating in the cutting at the same time are the disadvantages. It is impossible for a cutting edge to cut at the same time. The required power is related to the number of cutting edges participating in the cutting. The position of the milling cutter relative to the workpiece plays an important role in terms of chip formation, cutting edge load, and processing results. In face milling, use a milling cutter that is about 30% larger than the cutting width and position the milling cutter close to the center of the workpiece, then the chip thickness does not change much. The chip thickness during cutting is slightly thinner than when cutting at the center.

Categories:Industry News
Author:
Origin:
Time of issue:2020-06-15
Views:0

When optimizing the milling effect, the blade of the milling cutter is another important factor. In any milling, if there are more than one blades participating in the cutting at the same time, it is an advantage, but too many blades participating in the cutting at the same time are the disadvantages. It is impossible for a cutting edge to cut at the same time. The required power is related to the number of cutting edges participating in the cutting. The position of the milling cutter relative to the workpiece plays an important role in terms of chip formation, cutting edge load, and processing results. In face milling, use a milling cutter that is about 30% larger than the cutting width and position the milling cutter close to the center of the workpiece, then the chip thickness does not change much. The chip thickness during cutting is slightly thinner than when cutting at the center.

In order to ensure a sufficiently high average chip thickness/feed per tooth, the number of cutter teeth suitable for this process must be correctly determined. The pitch of the cutter is the distance between the effective cutting edges. According to this value, the milling cutters can be divided into three types-dense tooth milling cutters, sparse tooth milling cutters, and ultra dense tooth milling cutters.

Also related to the thickness of the milled chips is the main angle of the face milling cutter. The main angle is the angle between the main cutting edge of the insert and the surface of the workpiece. The main angles are 45 degrees, 90 degrees, and round inserts. The change of direction will change greatly with the difference of the main declination angle: the milling cutter with a main declination angle of 90 degrees mainly produces radial force, which acts in the feed direction, which means that the surface to be processed will not bear too much pressure It is more reliable for workpieces with weak milling structure.

The radial cutting force of the milling cutter with a main declination angle of 45 degrees and the axial direction are approximately equal, so the pressure generated is relatively balanced, and the power requirements of the machine tool are also relatively low. It is particularly suitable for milling short chip materials that produce chipping chips Artifacts.

The milling cutter with round insert means that the main declination angle changes continuously from 0 degrees to 90 degrees, which mainly depends on the cutting depth. The cutting edge strength of this type of blade is very high. Because the chips generated along the long cutting edge are relatively thin, it is suitable for large feeds. The direction of the cutting force in the radial direction of the blade is constantly changing, and the pressure generated during the machining process Will depend on the depth of cut. The development of the geometric geometry of modern blades has the advantages of round cutting blades with a stable cutting effect, low power requirements for the machine tool, and good stability. Today, it is no longer an effective rough milling cutter, and is widely used in face milling and end milling.

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