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Si se presentan estos problemas en el mecanizado CNC, ¿cómo solucionarlos?

2020-03-28

Encontré algunas condiciones anormales durante el procesamiento CNC. Si debo lidiar con eso, ahora lo compartiré con todos ~~

If these problems occur in CNC machining

Primero, se corta la pieza de trabajo:

the reason:
1, the knife, the strength of the tool is not too long or too small. Causes the tool to bounce.
2. Improper operation by the operator.
3. Uneven cutting allowance. (Eg: 0.5 on the side of the surface and 0.15 on the bottom)
4. Improper cutting parameters (such as too large tolerance, too fast SF setting, etc.).
Mejorar:
1. Use the knife principle: it can be big or small, short or long.
2. Add a clearing angle program, the remaining amount should be as uniform as possible, (the remaining amount on the side and the bottom should be consistent).
3. Reasonably adjust the cutting parameters and round the corners with large margins.
4. Usando la función SF de la máquina herramienta, el operador ajusta la velocidad para lograr el mejor efecto de corte.

Dos puntos:
la razón:
1. El operador no es preciso durante la operación manual y la operación manual es incorrecta.
2. Hay rebabas alrededor del molde.
3, la sub-varilla es magnética.
4. Los cuatro lados del molde no son verticales.
Mejorar:
1. La operación manual debe revisarse cuidadosamente repetidamente, y la división debe estar en el mismo punto ya la misma altura.
2. Utilice una piedra o una lima para quitar las rebabas alrededor del molde y luego límpielo con un trapo. Finalmente, confirme a mano.
3. Desmagnetice la varilla centrífuga antes de dividir el molde. (Se puede utilizar varilla centrífuga de cerámica u otra).
4. Calibrate and check whether the four sides of the mold are vertical. (The verticality error needs to be reviewed with the fitter).
Three. Knife:
la razón:
1. El operador no es preciso durante la operación manual y la operación manual es incorrecta.
2. The tool is incorrectly clamped.
3. The blade on the flying knife is wrong (the flying knife itself has a certain error).
4. There is an error between R knife, flat bottom knife and flying knife.
Mejorar:
1. Manual operation should be carefully checked repeatedly, and the knife setting should be at the same point as much as possible.
2. When the tool is clamped, use a blow gun to clean it or wipe it with a rag.
3. A blade can be used when the blade on the flying knife needs to measure the shank and the bottom surface.
4. Separate a tool setting procedure to avoid errors between R knife and flat knife.
D. Collider-Programming:
la razón:
1. The safety height is insufficient or not set (the knife or chuck hits the workpiece when rapid feed G00).
2. The tool on the program list is incorrectly written with the actual program tool.
3. The tool length (edge ​​length) on the program list and the actual machining depth are incorrectly written.
4. The depth Z axis access number and the actual Z axis access number on the program list are incorrectly written.
5. The coordinates are set incorrectly during programming.
Mejorar:
1. La medición precisa de la altura de la pieza de trabajo también asegura que la altura segura esté por encima de la pieza de trabajo.
2. La herramienta de la lista de programas debe ser coherente con la herramienta de programa real (en la medida de lo posible, utilice la lista de programas automática o la imagen para mostrar la lista de programas).
3. Mida la profundidad real de mecanizado en la pieza de trabajo, escriba claramente la longitud de la herramienta y la longitud de la hoja en la hoja del programa (generalmente, la longitud del portaherramientas es 2-3 mm más alta que la pieza de trabajo, y la evitación del borde de la hoja es de 0,5-1,0 mm) .
4. Tome el número real del eje Z en la pieza de trabajo y escríbalo claramente en la lista de programas. (Esta operación generalmente se escribe manualmente y se verifica repetidamente).

V. Collider-Operator:
la razón:
1. Wrong Z axis tool setting.
2. The number of hits and the number of operations are incorrect (such as: single-sided access without a radius of infeed, etc.).
3. Use the wrong knife (such as D4 knife and D10 knife for processing).
4. The program goes wrong (eg A7.NC goes A9.NC).
5. The handwheel is shaken in the wrong direction during manual operation.
6. Press the wrong direction during manual rapid feed (for example: -X press + X).
Mejorar:
1, the depth Z axis tool setting must pay attention to where the tool setting is. (Bottom, top, analysis, etc.).
2. Repeat the check after the number of hits and operations are completed.
3, when clamping the tool, repeatedly check with the program list and the program before loading.
4. The program should go in order one by one.
5. In manual operation, the operator should strengthen the proficiency of the machine tool himself.
6. In the manual rapid movement, the Z axis can be raised above the workpiece to move.

Six. Surface accuracy:
la razón:
1. The cutting parameters are unreasonable, and the surface of the workpiece surface is rough.
2. The cutting edge of the tool is not sharp.
3, the tool clamping is too long, the blade edge is too long.
4, chip removal, air blowing, oil flushing is not good.
5. Program the cutting method, (you can consider walking milling as far as possible).
6. The workpiece has burrs.
Mejorar:
1. Cutting parameters, tolerances, allowances, and speed feed settings should be reasonable.
2. The cutter requires the operator to check from time to time and change it from time to time.
3. The operator is required to clamp as short as possible when clamping the tool, and the blade should not be too long to avoid emptying.
4. For the cutting of flat knife, R knife, round nose knife, the speed feed setting should be reasonable.
5. The workpiece has burrs: it is directly related to our machine tools, cutting tools, and cutting methods. So we need to understand the performance of the machine tool, and make up for the burr.

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