Universal compression spring former

Details Universal compression spring former Universal compression spring former

2008-04-08

2008-04-08

Tolan, Ed (Department: 3725)

Metal deforming

By deflecting successively-presented portions of work during...

To form helical coil or tube

C072S017300, C072S018600, C072S132000, C072S138000, C072S145000

Reexamination Certificate

active

07353680

ABSTRACT:
The compression spring former disclosed by the present invention contains an external diameter mechanism, spacing mechanism, wire-feeding mechanism, cutting mechanism, length-detecting mechanism, sorting mechanism, and microcomputer control mechanism. Within the working range, specific springs can be formed simply by inputting the parameters describing the external diameter, spacing, roll number, and other allowance requirements. The control mechanism has a built-in length detecting and automatic sorting mechanism, which can modify the spring spacing according to different free heights, ensuring the allowance of free height. The cutter has a working mode for repeated cutting. The lowest point of the cutter shaft is set to “0” degrees for cutting the springs. If the cutter swings from positive 20 degrees to negative 20 degrees, or from negative 20 degrees to positive 20 degrees, the spring will be cut. That is to say, a spring is produced in every rotation of 40 degrees.

REFERENCES:
patent: 3641794 (1972-02-01), Lidert
patent: 4991277 (1991-02-01), Itaya
patent: 5713115 (1998-02-01), Knoepfel et al.
patent: 5829293 (1998-11-01), Cheng
patent: 5875664 (1999-03-01), Scott et al.
patent: 6758079 (2004-07-01), Wells et al.
patent: 7024901 (2006-04-01), Yamaguchi et al.

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