Overview
The quick cut shearing machine is widely used in sheet metal processing industry. It can cut thin sheets of metal or other materials through blade reciprocation. The shearing machine is a relatively simple machine, but in the process of use, it sometimes fails. The failure of cutting is mainly caused by the breakage of the shear wire. This article mainly analyzes the reasons why the quick-witted shear wire breaks, and puts forward the corresponding measures to improve the failure.
Causes of Wire Breakage
1. Bank Angle Error: The Bank Angle Error refers to the error between the Bank Angle formed when the blade moves along the direction of the material and the actual blade displacement. If the Bank Angle is too large, and if the shear force increases due to the excessive shear wire feed speed or the blade pressing force increase, the wire may break.
2. Insufficient Shear Strength: If the Work Material is too hard to be cut, or the thickness of the Work Material is too large, the shear strength of the shear wire will be insufficient, resulting in wire breakage.
3. Unstable wire: If the cutting line is not straight, the wire passes too fast, or there is too large air gap between the wire and the material surface, then the wire will be unsteady and eventually break.
4. Poor sharpness of wire: If the wire is blunt, its cutting ability is reduced, and more push is needed when cutting hard materials, which will cause wire breakage.
5. Poor contact between wire and blade: If the insulation layer between the wire and the blade is corroded or aged, or when the wire and blade are closely contacted, then the cutting force is not transmitted effectively, and the wire may be broken.
Suggestions for Improvement
1. Control the Bank Angle: To reduce the influence of the Bank Angle on the shear line, it is important to ensure the accuracy of the Bank Angle. It is suggested to check the Bank Angle twice a day, make necessary adjustment in time, and keep the accuracy to maks.
2. Use a sharp wire: To ensure that the cutting material is easy to feed and cut well, it is necessary to use a sharp wire. If the wire is found to be blunt, it should be replaced in time.
3. Strengthen the rigidity: To prevent the wire from swaying, it is suggested to strengthen the rigidity of the wire, add vibration-absorbing device and set up a correct cutting line.
4. Replace the wire regularly: To ensure the quality of the wire, it is necessary to use high-quality wire and replace the wire regularly. During replacement, the contact points between the wire and the blade should also be inspected frequently.
5. Adjust the press force and feed speed: Generally, the large-diameter wire and the large-feed machine need small shear force and slow feed speed, while the small-diameter wire and the small-feed machine need large shear force and fast feed speed. Therefore, according to different Work Material and wire conditions, the press force and feed speed should be adjusted properly.
Conclusion
This article has analyzed the reasons for the breakage of the quick-witted shear wire, and given corresponding improvement measures. Through the measures mentioned above, it is helpful to avoid wire breakage and reduce the loss of materials and other costs caused by breaking wire. Therefore, it is necessary to pay attention to the selection of materials and tools, and frequently check the parameters of the quick-witted shearing machine in daily work, so as to keep the cutting quality in a good state.
