Numerical control machining common problems and methods

CNC machining of the workpiece over cutting

The reasons for workpiece overcutting in the process of numerical control machining are as follows:

1. Numerical control tool length is not enough, resulting in numerical control tool spring knife.

2. The operator operates improperly in the process of numerical control machining.

3. Uneven cutting allowance in the process of CNC machining.

4. Improper cutting parameters

The solution is as follows:

1 numerical control tool can be large, short or not long.

2. Add the corner cleaning procedure, and the allowance should be uniform.

3. In the process of machining, cutting parameters should be reasonably adjusted, and corners with large allowances should be rounded.

4. Using the SF function of the machine tool in the process of NC machining, the operator can fine-tune the speed to achieve the best effect of NC machine tool cutting.

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Numerical control machining points in the problem

The cause of the problem in the process of generation:

1. Inaccurate manual operation by the operator.

2. There are burrs around the mold.

3. The center bar has a magnetic field.

4. The four sides of the mold are not vertical.

The ways to improve are as follows:

1. The manual operation in numerical control processing should be carefully checked repeatedly, and the points should be at the same height at the same point.

2. Use an oilstone or file to deburr the periphery of the CNC mold and then wipe it clean with a rag, and finally confirm it by hand.

3. Before dividing the CNC mold into the center, the center rod will be demagnetized first.

4. Check whether the four sides of the CNC mold are vertical.

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NC machining of the problem of the tool

The following problems appear in the process of CNC machining:

1. The operator’s manual operation is not accurate in the process of numerical control machining.

2. Numerical control tool clamping error.

3. Incorrect blade on flying knife.

4. There is error between R knife, flat bottom knife and flying knife.

The solution is as follows:

1. The manual operation in the process of numerical control machining needs to be carefully checked repeatedly, and the knife should be set at the same point as far as possible.

2. When the CNC tool is clamped, blow it clean with air gun or wipe it clean with rags.

3. A blade can be used when the blade on the flying knife is to measure the blade bar and the light bottom.

4. A separate knife program can avoid the error between R knife flat knife flying knife.


Post time: Apr-23-2021