公开(公告)号：US3552263A

公开(公告)日：1971-01-05

申请号：US3552263D

申请日：1968-10-01

Applicant: GLEASON WORKS

Inventor： HUNKELER ERNST J ,  SMITH FRANK A ,  WALRATH FREDERICK C

IPC: B23F9/10

CPC classification number: B23F9/10 ,  Y10T409/104611

Abstract: An improved cradle is provided in a gear cutting machine so that bevel gears can be cut by a novel method which involves controlled axial movements of the cradle within its housing toward and away from a work spindle. In addition to providing conventional rotational movements to the cradle, there is provided a means for axially reciprocating the cradle within its housing in a timed relationship with rotations of a work spindle and with rolling movements of the cradle. The cradle includes a cylindrical surface which is journaled within a cradle housing, and hydraulically operated pistons function to advance the cradle axially toward a work spindle. Return movements of the cradle, away from a work spindle, are dictated by a crank member which is oscillated back and forth to accommodate axial movements of the cradle. The crank member derives its oscillating movements from a first cam and follower means associated with a drive means of the gear cutting machine. In addition, a second cam and follower means, which also effects axial movement of the cradle, may be provided for controlling helical motion of a cutter during a cutting operation. The second cam and follower means can override the effects of the first cam and follower means, and the second cam and follower means derives its movements from rotational movements of the cradle.