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Common problems and methods of CNC machining

Aug 12,21

Nc machining workpiece overcutting
The reasons for workpiece overcutting in the process of CNC machining are as follows:
1 numerical control tool length is not enough, leading to numerical control tool bullet knife.
2. Improper operation of the operator during nc machining.
3. Uneven cutting allowance during NC machining.
4. Improper cutting parameters
The solution is as follows:
1 CNC tools can be large, short or not long.
2. Add the Angle cleaning program, and keep the allowance even.
3. In the process of processing, the cutting parameters should be adjusted reasonably, and the corner with large margin should be rounded.
4. In the process of CNC machining, the SF function of the machine tool is utilized, and the operator fine-adjusts the speed to achieve the best effect of CNC machine tool cutting.
Numerical control machining points in the problem
Causes of problems in the processing process:
1. The operator's manual operation is not accurate.
2. There are burrs around the mold.
3. The center rod has magnetism.
4. The four sides of the mold are not vertical.
The improvement method is as follows:
1. Manual operation in CNC machining should be carefully checked repeatedly, and the points should be at the same height at the same point.
2. The periphery of the NUMERICAL control mold is deburred with stone or file and then cleaned with rags, and then confirmed by hand.
3. Before dividing the CNC mold, demagnetize the dividing rod first.
4. Check whether the four sides of the CNC mold are vertical
The problem of tool setting in NC machining
The following problems occur in the process of NC machining:
1. The manual operation of the operator is not accurate during CNC machining.
2. The nc tool is incorrectly clamped.
3. The blade on the flying knife is wrong.
4. There is error between R knife and flat bottom knife and flying knife.
The solution is as follows:
1. Manual operation in THE process of CNC machining needs to be carefully checked repeatedly, and the knife should be set at the same point as possible.
2. When clamping the CNC tool, blow it clean with an air gun or wipe it clean with rags.
3. One blade can be used to measure the blade bar and light the bottom surface of the flying knife.
4. A single tool setting program can avoid the error between R knife flat knife flying knife.
CNC machining collider - programming
The reasons for the collision in the process of CNC machining are as follows:
1. The safety height is not enough or not set (the knife or chuck will hit the workpiece when fast feeding G00).
2. The nc tool on the program sheet and the actual program tool write wrong.
3. The tool length (edge length) and the actual machining depth in the program list are written incorrectly.
4. The number of depth z-axis in the program and the number of actual Z-axis were written incorrectly.
5. Coordinates are incorrectly set during CNC programming.
Collider - operator for NC machining
In addition to programming, there are also reasons for the collision in CNC machining. The reasons are as follows:
1. The depth z-axis is wrong.
2. Errors in the number of collisions and operating numbers.
3. The wrong knife is used in the nc machining process.
4. The program goes wrong in the process of CNC machining.
5. The hand wheel is shaken in the wrong direction during manual operation during CNC machining.
6. Press the wrong direction for manual fast feed.
To solve this problem, do the following:
1. When CNC machining depth Z axis tool must pay attention to the position of the tool.
2. The number of points in the touch and the number of operations should be checked repeatedly after the completion.
3. When clamping CNC tools to repeatedly and program sheet and program check before loading.
4. Go through the process one by one.
5. When using manual operation, it is necessary to strengthen the operator's proficiency in CNC machine tools.
6. When CNC machining manual fast movement, you can first raise the Z axis to the workpiece and then move.