| 摘要 |
983,976. Intermittent gearing. GLEASON WORKS. Feb. 10, 1964 [March 11, 1963], No. 5506/64. Heading F2Q. [Also in Division B3] An index mechanism comprises a housing supporting a radially slotted driven wheel 24, 25 and a rotary driver 28 having two diametrically-opposed drive pins for alternate engagement in the wheel slots, a fluid-pressure-operated member 39 oscillatable through 180 degrees about the axis of the driver, and a shuttle clutch 43 and valve means for controlling intermittent oscillation of the member to move the driver uni-directionally. The mechanism, in a gear-cutting machine, indexes a blank G on a shaft composed of two rigidly-connected sections 14, 15 containing a chuck-operating piston 16. The section 14 is supported by bearings 17 in a bearing ring 11 which carries a piston 18. When the piston is actuated, the reaction forces acting on the parts 15, 11, clamp the spindle in position. In operation, a machine cam 56 operates, after a tooth-space has been cut in the blank, to reverse a valve 55. The valve 55 causes the combined clutch-andvalve piston 43 to engage the fluid-pressure motor 39 with the driver wheel 28, to release the spindle clamp 18, to withdraw a locking- plunger arm 34, to rotate the motor, thus advancing the gear blank by one pitch, and finally causes a re-setting of the motor and piston 43 and a re-clamping of the parts. A pressure accumulator 62 keeps the spindle clamp engaged. |
