Drawing machine

Details Drawing machine Drawing machine

2008-09-19

2010-02-16

Ross, Dana (Department: 3725)

Metal deforming

By pulling workpiece through closed periphery die

Utilizing specified work moving means

C072S287000

Reexamination Certificate

active

07661285

ABSTRACT:
A drawing machine includes a plate unit, a clamping device, a transmit member, a driving device and a cam. The transmit member includes a following roller. The driving device includes a main linkage inserted through the plate unit and having first and second ends. The cam includes first and second cam paths, with the first cam path disposed between two sides of the second cam path. When the cam is in a first position, the distances between the first cam path and two sides of the second cam path are different. When the cam is in a second position, the distances between the first cam path and two sides of the second cam path are equal. The following roller drives the main linkage to pivot, with the clamping device driven to clamp a rod or pipe. The plate unit is driven by the second cam path and reciprocates along the cam axially.

REFERENCES:
patent: 2664191 (1953-12-01), May
patent: 3138243 (1964-06-01), Oakley
patent: 3690133 (1972-09-01), Hilgers
patent: 3844152 (1974-10-01), Peytavin
patent: 4879892 (1989-11-01), Paraskevas
patent: 4941197 (1990-07-01), Roeser
European Patent No. 0112805, Sep. 9, 1987, 9 pages.
European Patent No. 0306608, Apr. 20, 1988, 8 pages.

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