Surface grinding wheels are widely used because their grinding efficiency is more than double that of single-face grinding wheels. So, what problems will surface grinding wheels encounter during the grinding process? How can we deal with them?
1. Surface grinding wheel burns the workpiece during grinding
⑴ The hardness of the surface grinding wheel is too high: Replace with a grinding wheel of appropriate hardness.
⑵ The coolant nozzle is not oriented correctly or the flow rate is insufficient: Adjust the coolant nozzle direction and increase the flow rate.
⑶ The grinding wheel is not adequately dressed: Replace the grinding wheel dresser and re-dress.
⑷ The feed rate during grinding is too high: Reduce the feed rate appropriately.
⑸ The coolant is not filtered cleanly: Recheck and adjust the cooling system.
2. The discontinuity of the grinding workpiece size is relatively poor
The hardness of the surface grinding wheel selected is too high: replace it with a grinding wheel of appropriate hardness.
3. Chatter marks appear on the surface of the surface grinding wheel
⑴ Feed rate is too high: Reduce the feed rate.
⑵ Grinding wheel is too hard: Reduce the hardness, increase the workpiece speed, and speed up the dressing process.
⑶ Grinding wheel is not straightened: Re-dress the grinding wheel. Machine vibration; check the vibration level of the machine tool and surrounding environment.
4. The continuity of the workpiece size is relatively poor
The hardness of the selected surface grinding wheel is too low: replace it with a grinding wheel of appropriate hardness.
5. The surface roughness of the workpiece after grinding is relatively poor
⑴ Workpiece speed is too slow: Increase the workpiece speed.
⑵ Coolant is not adequately filtered: Check and adjust the coolant filtration system to ensure it is functioning properly.
⑶ Feed rate is too high: Reduce the feed rate appropriately.
⑷ Grinding wheel speed is too low: Adjust the grinding wheel speed.
⑸ Grinding wheel dressing is not adequate: Adjust or replace the surface grinding wheel dresser and re-dress.
⑹ The selected grinding wheel grit size is not compatible: Replace the grinding wheel with a compatible grit size.
