Mandrel changing device for a piercing rolling mill

Details Mandrel changing device for a piercing rolling mill Mandrel changing device for a piercing rolling mill

1977-12-06

1978-12-05

Mehr, Milton S.

Metal deforming

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

During rotation of work

72209, B21B 2506

Patent

active

041279980

ABSTRACT:
The disclosure of the present invention concerns a piercing rolling mill with a mandrel changing device which has at least two groove-like recesses which can be positioned alternately in the rolling line in order to hold the mandrels, and a retractable mandrel stripper, and where the mandrel rod carries at its front end a pin on which the mandrel is attached in such a way that it is detachable against the effect of expanding springs or similar means.

REFERENCES:
patent: 1931571 (1933-10-01), Burn
patent: 2771800 (1956-11-01), Kritscher
patent: 4022043 (1977-05-01), Chevet

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