Apparatus for forming grooves having a curved axis and a circula

Details Apparatus for forming grooves having a curved axis and a circula Apparatus for forming grooves having a curved axis and a circula

1981-12-30

1984-02-14

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

Spherical tool

72215, 72125, 72406, B21D 1704, B21J 512

Patent

active

044308736

ABSTRACT:
The apparatus comprises a support for supporting a blank in which at least one groove having a curved axis and a circular section is to be formed, a ball for forming the groove and carried at one end of a ball holder, a device for displacing the ball holder, and an articulated quadrilateral structure which has a first side rigid with the support and a second side in which the ball holder is fixed by an end of the ball holder. The second side is opposed to the first side of the quadrilateral structure. Thus the ball holder is movable relative to the support by the ball holder displacing device. An application of the apparatus is in the forming of runways in transmission joints of the tripod type.

REFERENCES:
patent: 3457750 (1969-07-01), Orain
patent: 3974677 (1976-08-01), Castellani

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