Mandrel holding and releasing means

Details Mandrel holding and releasing means Mandrel holding and releasing means

1977-12-06

1979-04-17

Mehr, Milton S.

Metal deforming

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

During rotation of work

72209, B21B 2506

Patent

active

041493966

ABSTRACT:
An arrangement for securing and easily releasing a mandrel from a mandrel rod upon their advancement and return movements during the piercing operation of a seamless tube. Between the mandrel and rod is an intermediate piece having one or more openings for receiving a hook with a nose extending into an opening of the mandrel. The hook is biased into position by a spring mounted around its one end and at its other end beneath a nose is a tapered surface for contacting a corresponding surface of the mandrel to pivot the hook away from the interior of the mandrel to release the mandrel from the intermediate piece and mandrel rod.

REFERENCES:
patent: 3762201 (1973-10-01), Schoenfeld et al.
patent: 4022043 (1977-05-01), Chevet

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