Solutions to Frequent Wire Breaking in High-Speed Cutting Machines: A Comprehensive Guide
As high-speed cutting machines play a vital role in treatizing matrices, monoblocian gears, splines, pointed corners, and narrow slit parts of various complex shapes, frequent wire breaking can lead to significant economic losses and part rebuilding. In this article, we will explore the causes and solutions to frequent wire breaking in high-speed cutting machines.
1. Molybdenum Wire Issues
- Loose molybdenum wire installation: When the molybdenum thread is installed too freely, it will vibrate severely, causing wire breaks. On the other hand, if it is installed too tight, the wire will be prone to overheating and damage. The ideal installation requires a balance between the two.
- Wire installation: The molybdenum wire must be wound on the wire storage barrel in the specified direction and fixed at both ends. Leave 10 mm space at the ends and ensure the middle is full and not overlapping to prevent frequent engine reversal and part damage.
2. Wire Transport Mechanism
- The wire transport mechanism, comprising the wire storage barrel, metal frame, and guide wheel, is prone to accuracy decrease due to wear and tear. This can cause the radial jump and axial movement of the wire storage barrel, leading to wire breaks.
- Regularly check the wire transport mechanism to ensure the wire storage barrel and guide wheel turn smoothly. Replace worn-out parts to avoid wire breakage and damage to the machine.
- Use a wire-driven wire guide to improve wire stability and reduce vibration.
3. Part Material and Handling
- Process parts with minimal internal stress: For parts that are not forged or quenched, use low-temperature treatment to eliminate internal stress before cutting. This will reduce the risk of wire breakage.
- Handle parts with care: Keep parts securely fastened during treatment to avoid wire breaks caused by part movement or self-weight.
4. Electrical Parameters
- Electrical parameter selection: Avoid high peak currents and tensions, as this can lead to wire breaks. Typically, vacuum tension is around 100 V.
- Pulse width and discharge deviation: Adjust the pulse width and discharge deviation according to part thickness. A too small discharge deviation can cause circuit failure and decreased treatment speed.
Conclusion
Frequent wire breaking in high-speed cutting machines can be caused by a combination of molybdenum wire issues, wire transport mechanism accuracy, part material and handling, and electrical parameters. By understanding these causes, users can implement solutions to minimize wire breakage and ensure efficient and effective high-speed cutting machine operation. Remember to:
- Regularly check and maintain the molybdenum wire installation and wire transport mechanism.
- Use low-temperature treatment to minimize internal stress in parts.
- Handle parts with care to prevent wire breaks.
- Adjust electrical parameters according to part thickness.
- Replace worn-out parts to ensure accurate wire transport and minimize wire breakage.
By following these guidelines, you can minimize wire breaks and optimize the performance of your high-speed cutting machine.
