For the first method, machining gears 1 gear is actively transmitting motion to the grinding wheel 2.To can crushed both side of the tooth should have rotary motion under two-dimensional reversible. There are axial knife movement to end grinding tooth thickness.In the second method, machining gears 1 fit with three crushing gear, which has the No. 2 wheel tilt left no. 3 gear has teeth have straight teeth. Thus, the axis of the gear 3 gear machined parallel to the axis of the wheel, while no. 2 incline than gears machined at an angle and angle can be adjusted by this. Two gear rotation number n = 150-300 vg/ph, machining gears have translational along the axis from 40-200 dual journey in a minute.
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