| 摘要 |
PURPOSE:To increase the gear manufacturing efficiency, by constituting a gear shaping machine by which helical gears are manufactured with a pinion cutter, as plural gears whose each helix angle is different with each other, can be processed without exchanging helical guides. CONSTITUTION:In performing the gear shaping work, a pinion cutter 12 is attached to the lower end of a cutter fixing shaft 11. Then, a lead determinative block 30 is advanced toward a helical guide 25 by feeding pressure oil into a pressure oil room 38 of this block 30, and engaged with the corresponding projecting threads of the outer circumferential surface of the helical guide 25. After that, a rotary supporting cylinder 21, a guide case 24, the helical guide 25, a cutter spindle 10, the cutter fixing shaft 11 and the pinion cutter 12 are rotated as an integrated one body, through a worm wheel 22, by rotating a master worm. At the same time as the helical guide 25 is moved upward/ downward through a lift shaft 9, the inclined grooves of the lead determinative block 30, which are correspondent to the lead of the cutter, are engaged with the threads of the helical guide 25. In this way, desired helical gears are manufactured. |
