Tapered thread roll-forming machine

Details Tapered thread roll-forming machine Tapered thread roll-forming machine

1986-11-28

1988-11-22

Larson, Lowell A.

Metal deforming

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

During rotation of work

72110, 72107, 10 96T, B21H 302, B21H 902

Patent

active

047856491

ABSTRACT:
An apparatus for forming tapered threads to a workpiece such as a pipe comprises a casing and a supporting member attached to one side of the casing, and three support plates rotatably attached to the supporting member. Roller members or cam members are secured to the support plates, respectively, to be rotatable with respect thereto and rolling dies are also secured to the support plates. The rolling dies are rotated by an electric motor through a power transmission mechanism. The workpiece is inserted into a space defined by the supporting dies to be subjected to the roll-forming operation.

REFERENCES:
patent: 591324 (1897-10-01), Carstensen
patent: 896665 (1908-08-01), Rider
patent: 2704950 (1955-03-01), Scott
patent: 2819631 (1958-01-01), Scott et al.
patent: 3091142 (1963-05-01), Szikla
patent: 3693390 (1972-09-01), Oehm
patent: 3972213 (1976-08-01), Habegger

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