Re-rolling attachment for thread rolling machine

Details Re-rolling attachment for thread rolling machine Re-rolling attachment for thread rolling machine

1979-03-20

1981-02-24

Mehr, Milton S.

Metal deforming

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

During rotation of work

B21H 306

Patent

active

042520096

ABSTRACT:
A significantly simplified, rugged attachment is provided for a standard thread rolling machine for quick and easy re-rolling of threaded parts for producing high quality threads. A pressure foot is mounted between an open end of a feed chute and the starting end of a fixed die and is biased toward a confronting movable die for urging a threaded part into mesh with the die surface of the movable die when it is moving toward a rear limit position. Such mesh between the threaded part and movable die is effected before the threaded part is pushed by a starter blade into matched rolling position against a starting end of the fixed die and thereafter the moving die reverses its direction of movement to stroke into a forward limit position to effect precision re-rolling of the previously threaded part to produce a high quality finished part.

REFERENCES:
patent: 2967444 (1961-01-01), Hallberg et al.
patent: 3842633 (1974-10-01), Morton et al.
patent: 3879976 (1975-04-01), Morton

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