To grind the flanks of all teeth of a gear (sector gear) 2 having partial teeth circumferential.
A work (gear) 2 is supported by the C-shaft rotatably, and a circular grinding wheel 10 having a rack-form section is installed capable of advancing and retreating along the X-axis to/from the rotational axis (C-shaft) of the gear 2, while the grinding wheel 10 is arranged movably in the direction (along Y-axis) perpendicular to the axis of the gear 2 and in the direction (along Z-axis) parallel with the gear axis. The gear 2 and the grinding wheel 10 are meshed at the starting point of meshing at the end part in the tooth width direction. The gear 2 is rotated till the end point of the two meshing while the grinding wheel 10 is put in linear movement along the Y-axis in synchronization with the rotation so that the gear generating motions are conducted. The grinding wheel 10 is moved for a divisional amount ΔZ in the tooth trace direction, and the gear generating motions are repeated. In this manner, the circular grinding wheel 10 having the rack-form section and the gear 2 having the partial circumferential teeth conduct the gear generating motions, and thereby grinding is applied to the flanks of all teeth.
SUGANO HARUO
SAGA HIROSHI
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