Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1976-10-15
1977-06-14
Mehr, Milton S.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72469, B21D 914, B21D 5328
Patent
active
040289222
ABSTRACT:
Apparatus and a method for splining annular thin wall power transmission members in a manner that provides precise spline formation and accurately maintains the roundness of the splined members. A toothed pinion type mandrel of the apparatus mounts a power transmission member to be splined between a pair of cooperable dies of the apparatus. Each die has at least one first tooth group and a second tooth group, and teeth of each tooth group are spaced therealong with the teeth of the first group spaced farther from each other than the teeth of the second group. Driving of the dies relative to each other and the power transmission member mounted on the mandrel initially engages the farther spaced teeth with the mounted transmission member so as to cooperate in a meshing relationship with the toothed mandrel with the power transmission member therebetween to form a first set of splines. Subsequent movement of the dies engages the closer spaced teeth with the power transmission member to mesh with the first set of splines therein while concomitantly cooperating in a meshing relationship with the toothed mandrel with the power transmission member therebetween to form a second set of splines intermediate the first set of splines. Still subsequent driving movement of the dies again engages the splined power transmission member with the farther spaced teeth to mesh with the splines while skipping at least alternating locations therebetween to correct any out of roundness of the member.
REFERENCES:
patent: 3982415 (1976-09-01), Killop
Anderson-Cook Inc.
Mehr Milton S.
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