Apparatus for making a hole and a hole-surrounding collar in the

Details Apparatus for making a hole and a hole-surrounding collar in the Apparatus for making a hole and a hole-surrounding collar in the

1982-03-03

1985-03-12

Larson, Lowell A.

Metal deforming

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

With cutting of work or product

72 70, 72125, B21D 3102

Patent

active

045036934

ABSTRACT:
An apparatus for making a hole and a collar in the side of a pipe has a pipe-fastening portion mounted on a stand for holding the pipe and has a hole-making portion for making the hole in the pipe during movement in a first direction. There is also a collaring portion for collaring the edges of the hole during movement in a second direction. The hole-making portion and the collaring portion are mounted on the stand and rotated to produce the desired working action. A variable-speed feeder mounted between the stand and the hole-making and collaring portion effects relative vertical displacement between the stand and pipe-fastening portion and the hole-making and collaring portions. The feeder has a cam element for controlling the rate and extent of the vertical displacement and thereby the movement of the hole-making and collaring portions relative to the pipe. The cam element has a cam surface for forcing the collaring portion to effect a movement thereof in the second direction for forming the collar on the pipe. The cam surface limits the movement of the feeder in the first direction.

REFERENCES:
patent: 336598 (1886-02-01), Smith
patent: 1694814 (1928-12-01), Galloway
patent: 2814964 (1957-12-01), Werth
patent: 2991551 (1961-07-01), Fogle et al.
patent: 3151657 (1964-10-01), Beranek
patent: 3342087 (1967-09-01), Mulot
patent: 3346894 (1967-10-01), Lemelson
patent: 3704957 (1972-12-01), Petroff
patent: 3884060 (1975-05-01), Larikka
patent: 4083219 (1978-04-01), Combes et al.
patent: 4132097 (1979-01-01), Ames

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