What problems will be encountered in the grinding process of vertical double face grinder? What should we do?

1. CBN grinding wheel burns workpiece during grinding

a. The hardness of CBN grinding wheel is too high: the grinding wheel with proper hardness shall be replaced.

b. Incorrect direction or insufficient flow of coolant nozzle: adjust the direction and flow of coolant nozzle.

c. Insufficient CBN grinding wheel dressing: replace CBN grinding wheel dresser to conduct grinding wheel dressing again.

d. The feed of workpiece grinding is too large: reduce the feed properly.

e. Filter in the coolant is not clean: recheck and adjust the cooling system.

2. The size discontinuity of grinding workpiece is relatively poor

The hardness of the selected grinding wheel is too large: replace the grinding wheel with appropriate hardness.

3. The surface of CBN grinding wheel appears vibration

a. Too much feed: reduce the feed.

b. Grinding wheel is slightly hard: reduce hardness, increase workpiece speed and speed up dressing.

c. Grinding wheel is not leveled: the grinding wheel is reconditioned and the machine tool vibrates: check the vibration of the machine tool and its surrounding environment.

4. The continuity of common workpiece size is poor

The hardness of the selected grinding wheel is too low: replace the grinding wheel with appropriate hardness.

5. The surface roughness of workpiece after grinding is relatively poor

a. Workpiece speed is too slow: speed up the workpiece.

b. Insufficient coolant filtration: check whether the filtration system for adjusting coolant is normal.

c. Large feed rate: slow down the feed rate properly.

d. The rotation speed of the grinding wheel is too low: adjust the rotation speed of the grinding wheel.

e. Grinding wheel dressing is not in place: adjust or replace CBN grinding wheel dresser for dressing again.

f. The selected grinding wheel size is not matched: replace the matching grinding wheel size.