Frequently used problems of cutters and their treatment

Milling cutters are rotary tools with one or more cutting teeth for milling. They are mainly classified into cylindrical milling cutters, face milling cutters, end milling cutters, three-edge milling cutters, angle milling cutters, and saw milling cutters. And T-shaped cutters.

Xiao Bian summed up the common problems and solutions for the use of milling cutters for everyone:

1. Overcutting

Solution: reduce the depth and width when cutting

2. Machine or fixture lacks accuracy

Solution: Repair the machine and fixture

3. Machine or fixture lacks rigidity

Solution: Change the machine, fixture or change cutting settings

4. Too few blades

Solution: Use a multiple blade end mill

In the daily use of milling cutters, it is also very important to maintain the equipment. If the milling cutter axis line and the workpiece edge line are coincident or close to the edge line of the workpiece, the situation will be serious.

Regular maintenance also helps slow down the passivation of the cutter. When the milling cutter is passivated, it is necessary to check the wear condition of the cutter in time. If the degree is light, use a whetstone to grind the cutting edge. If the wear is heavy, it must be sharpened to prevent excessive wear of the cutter.

The following small series lists the phenomenon of passivation of cutters for everyone to help determine if the cutters passivation.

Passivation of the milling cutter:

1. From the point of view of the chip shape, the chips become coarse and flaky, and the color of the chips is purple;

2. The workpiece surface roughness is very poor, the surface of the workpiece appears bright spots, there are trowel marks or ripples;

3. The milling process produces severe vibrations and abnormal noise;

4. There is a shiny white point on the knife edge;

5. When carbide milling cutters are used to mill steel parts, a large number of fire mists often fly out;

6. A lot of smoke is generated when milling steel parts with high-speed steel cutters.