Analysis on the function of each angle of carbide saw blade milling cutter

Do you know the function of carbide saw blade milling cutter in every angle? Today, I'd like to summarize:

1. The rake angle of alloy saw blade milling cutter is mainly used to control the cutting speed, and it is also used to grind the main blade and the left and right secondary blades. The smaller the rake angle is, the slower the cutting feed speed is, and it is also suitable for hard cutting. If the rake angle is on the contrary, the faster the cutting feed speed is, it is more suitable for cutting with softer materials. Rake angle is an important part in the cutting process.

2. The rake angle is to reduce the cutting resistance, enhance the cutting of main and auxiliary blades, improve the sharpness and reduce the cutting resistance. It plays a key role in fast cutting and improving cutting speed. In order to make the cutting tool durable, when grinding the rake angle or the rake angle of the cutting edge, and when the grinding wheel of the grinding head exits, the equipment should have the active tool withdrawal equipment. Otherwise, when the main cutting edge was pulled out, the grinding wheel was pressed, and the main cutting edge could never grind out, which was also the fatal defect of domestic cutting tool manufacturing at that time.

3. The function of back angle is to control the cutting speed. The smaller the back angle is, the more wear-resistant it is. On the contrary, the back corner is extremely sharp. In order to make the cutting tools work continuously, it is necessary to control the back angle diameter jump. The intention is that each main cutting edge works continuously at the same time, and the back angle is generally suitable for 15 ° The angle after hard cutting is not more than 13 °。

4. The function of the back edge angle is to divide the left and right teeth in the cutting section, so as to reduce the cutting resistance and improve the cutting feed. When grinding, the center of matrix must be consistent with the center of grinding wheel. Otherwise, one side of the left and right main cutting edges will be higher or the other side will be lower, which will seriously affect the cutting life. Note that the angle of the back edge should not be greater than 13 °， If the back blade angle is too large, the main blade will break easily and the wear resistance will be greatly reduced.

5. The left and right corner (plane), the front corner and the back corner of the side play an important role in determining the quality of the tool. There are some main factors for the adjusting personnel, such as the asymmetry between the center of the matrix and the grinding heads on both sides, the asymmetry of the grinding line in the angle of the tool or the size of the grinding head angle, which will affect the next process, and the size of the front corner of the side will also seriously affect the cutting effect of the secondary blade. Generally, the lateral anterior angle is greater than 1.5 ° It is suggested that the side rake angle should be less than 1 °， Make the second pair of blades play the role of trimming and planing. The angle is less than 1 ° However, the cutting resistance does not increase. The flank angle is used to dissipate heat during cutting. The diameter of grinding wheel is selected according to the thickness of grinding wheel and workpiece. Generally, the flank angle is between 2.5 and 3.5 ° It is the change of grinding wheel diameter after wear, and will not affect the cutting effect.