Precautions for the operation of the wire cutting machine

1. The operator must be familiar with the structure and performance of the machine tool, and can only work after being trained and qualified. It is strictly forbidden for non-wire cutting personnel to use wire cutting equipment without authorization. It is strictly forbidden to use wire cutting equipment with super performance.

2. Preparation and confirmation before operation

1. Clean up the waste and impurities in the work surface and the work box, and do a good job in the 5S work of the machine tool and the surrounding area.

2. Check whether the working fluid is sufficient, and add it in time if it is insufficient.

3. When unmanned processing or precision processing, check whether the electrode wire allowance is sufficient and sufficient, and replace it if it is insufficient.

4. Check to confirm the amount of waste silk in the waste silk bucket. If it exceeds 1/2, it must be cleaned up in time.

5. Check whether the inlet pressure of the filter is normal, and whether the compressed air supply pressure is normal.

6. Check whether the inter-electrode line is dirty, loose or broken, and confirm whether there is interference in the inter-electrode line when the workbench is moved. (Guide: Four common types of self-locking nuts)

7. Check the wear of the conductive block, change the position of the conductive block when worn, and clean it if it is dirty.

8. Check whether the pulley is running smoothly and the electrode wire is running smoothly. Check and adjust if there is any jitter.

9. Check whether the electrode wire is vertical, and straighten the verticality of the electrode wire before processing.

10. Check whether the lower guide device is loose and whether the upper guide device opens and closes smoothly.

11. Check whether the nozzle is defective; whether the lower nozzle is 0.05～0.1mm below the work surface.

12. Check whether the related switches and keys are sensitive and effective.

13. Check whether the machine tool is operating normally.

14. When an abnormal phenomenon is found in the machine tool, it must be reported in time for processing.

Three, precautions for workpiece clamping

1. The rust and impurities must be cleaned up before the workpiece is clamped.

2. The mounting surface of the cutting work piece such as template and pattern plate should be polished and trimmed with oilstone before clamping to prevent uneven surface, affecting clamping accuracy or interference with the lower nozzle.

3. The clamping method of the workpiece must be correct to ensure that the workpiece is straight and fastened.

4. It is strictly forbidden to use sliding screws. The screw locking depth should be more than 8mm, and the locking force should be moderate, not too tight or too loose.

5. The pressing block should be clamped flat to ensure that the clamping parts are evenly balanced.

6. Be careful during the clamping process to prevent the workpiece (plate) from falling out of stability.

7. The clamping position of the workpiece should be conducive to the alignment of the workpiece, and be compatible with the stroke of the machine tool, which is conducive to programming and cutting.

8. After the workpiece (plate) is clamped, it must be checked again to confirm whether it interferes with the machine head, the inter-electrode line, etc.

4. Matters needing attention during processing

1. When moving the workbench or the spindle, the moving speed should be correctly selected according to the distance to the workpiece to prevent collisions when moving too fast.

2. When programming, determine the correct processing technology and processing route according to the actual situation, and prevent the workpiece from being scrapped or cut off in advance due to insufficient processing position or insufficient edge strength.

3. It is necessary to confirm whether the program and compensation amount are correct before thread cutting.

4. Check whether the electrode wire tension is sufficient. When cutting the taper, the tension should be reduced to half of the usual.

5. Check whether the feeding speed of the electrode wire is proper.

6. Choose open processing or close processing according to the actual situation of the workpiece, and try to shorten the distance between the nozzle and the workpiece on the premise of avoiding interference. During close processing, the distance between the nozzle and the workpiece is generally 0.05 to 0.1 mm.

7. Check whether the jet selection is reasonable, use high-pressure jets for rough machining and low-pressure jets for finishing.

8. Pay attention to observe and judge the processing stability when starting the cut, and adjust in time if any defects are found.

9. During the processing, the cutting conditions should be inspected and supervised frequently, and the problems should be dealt with immediately.

10. When the machine tool has an abnormal short circuit or abnormal shutdown during processing, the real reason must be found out and the correct treatment must be made before processing can continue.

11. When processing is suspended due to wire breakage, etc., after processing, it must be confirmed that there is no interference before processing can continue.

12. Modifying the processing condition parameters must be performed within the allowable range of the machine tool.

13. It is strictly forbidden to touch the electrode wire and the object to be cut during processing to prevent electric shock.

14. During processing, it is necessary to prevent the processing fluid from splashing out of the working box.

15. It is strictly forbidden to rely on the machine tool box during processing, so as not to affect the processing accuracy.

16. Before the waste or workpiece is cut, you should wait for the machine to observe. When cutting, immediately stop processing. Note that the waste or workpiece must be taken out before the workpiece table can be moved.

Five, other matters needing attention

1. The opening and closing of the machine tool must be carried out in accordance with the relevant regulations of the machine tool, and illegal operations are strictly prohibited to prevent damage to electrical components and system files.

2. Back to machine origin must be executed after power-on (the electrode wire should be cut first) to make the machine calibration consistent.

3. When disassembling the workpiece (plate), pay attention to prevent the workpiece (plate) from falling out of stability.

4. Clean up the sundries on the work surface and the work box in time after processing, and do a good job of 5S work on the machine tool and the surrounding area.

5. Fixtures and workpieces (plates) should be properly rust-proof and placed in designated locations.

6. Make necessary records after processing.

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