1 
Through hole-the workpiece rotates, the grinding wheel rotates, and it performs longitudinal reciprocating and lateral feed.
2
Cone-The workpiece rotates, the grinding wheel rotates, and reciprocates longitudinally and feeds horizontally, and the grinding head frame deflects by 1/2 cone angle.
3
Cone-The workpiece rotates, the grinding wheel rotates, reciprocating longitudinally, and is fed horizontally. The workpiece is clamped by a special fixture and deflected by 1/2 cone angle.
4
No through hole
The workpiece rotates, the grinding wheel rotates, reciprocating longitudinally, relying on the end face.
5
Step hole-The workpiece rotates. The grinding wheel reciprocates longitudinally. Rely on the end face.
6
Small diameter deep hole-The workpiece rotates, the grinding wheel rotates, and the longitudinal reciprocating and lateral feed are performed to increase the rigidity of the long shaft, ensure the sharpness of the grinding wheel, reduce the amount of back-grabbing, and pay attention to chip removal and cooling.
7
Discontinuous surface via-The workpiece rotates, the grinding wheel rotates, and the longitudinal reciprocating, transverse feed, increases the rigidity of the long shaft, ensures the sharpness of the grinding wheel, reduces the amount of knife back, pay attention to chip removal and cooling to increase the diameter of the grinding wheel, and if necessary, insert hardwood or in the groove or hole bakelite
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