Solving the problem of boring tool vibration often requires analysis and adjustment from multiple angles. Here are some possible solutions:
1. Improve the rigidity of the tool system: Use more rigid tool holders, boring bars and boring heads to reduce the overhang length, especially in the processing of small holes, deep holes and hard workpieces.
2. Ensure the dynamic balance of the tool system: If the tool itself has an unbalanced mass, centrifugal force will be generated during high-speed rotation, leading to chatter. Therefore, it is necessary to ensure the dynamic balance of the tool system.
3. Fixing rigidity of the workpiece: Ensure that the workpiece has sufficient rigidity, or use appropriate fixtures to fix it to reduce vibration during processing.
4. Choose the right insert and cutting parameters: The shape of the insert, rake angle, entering angle, nose radius and chip breaker shape all affect cutting resistance. At the same time, the selection of cutting parameters such as cutting speed, feed, feed amount and cooling method is also crucial.
5. Machine tool spindle system: Check the rigidity of the machine tool spindle, the performance of the bearings and gears, and the connection rigidity between the spindle and the tool holder.
6. Use vibration-damped tools: Some tool manufacturers offer specially designed vibration-damped tools that reduce vibration when machining long overhangs.
7. Adjust the servo system: By adjusting the frequency response of the PMC signal related to the spindle speed control, the CNC-related digital servo spindle vibration suppression function can be applied to reduce chatter.
8. Optimize lubrication conditions: Improving lubrication conditions can reduce friction and heat generation and help reduce vibration.
9. Improve machine tool design: Sometimes the design of machine tools may need to be improved to adapt to specific processing requirements and reduce vibration.
10. Use a special anti-vibration system: Some advanced boring tool systems have built-in vibration absorbers, which can reverse vibration and effectively suppress unnecessary vibration.
These solutions can be used individually or in combination to solve chatter issues in boring operations. In actual operation, it may be necessary to make multiple attempts and adjustments according to specific conditions to achieve the best processing effect.
