Thread roll attachment

Details Thread roll attachment Thread roll attachment

1991-08-09

1992-12-01

Larson, Lowell A.

Metal deforming

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

During rotation of work

72104, 72108, B21H 0304

Patent

active

051671360

ABSTRACT:
Each of the two, pivotal, roll supporting arms of a thread rolling attachment has therethrough adjacent the end thereof remote from its pivotal axis a bore in which one end of a cylindrical pattern roll supporting shaft is adjustably secured. The axis of the bore, and hence the axis of the shaft and the pattern roll mounted thereon, are inclined slightly to the pivotal axis of the roll supporting arm, so that the axis or rotation of the pattern roll will be inclined slightly to the axis of rotation of the stock which is to be engaged by the roll. The pattern roll is releasably attached to one end of the support shaft, and is drivingly connected to one end of an internal pin, which is mounted intermediate its ends for rotation in an axial bore which is formed through the support shaft. At its opposite end the pin is releasably connected to a roll gear to which rotation is imparted by the pin upon rotation of the pattern roll. Means are provided for securing the supporting shaft against rotation in its supporting arm, and for adjusting slightly the axis of inclination of the support shaft relative to the axis of the rotating stock.

REFERENCES:
patent: 2694322 (1954-11-01), Nell
patent: 2974550 (1961-03-01), Eigenbrode
patent: 3439518 (1969-04-01), Burnett

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