Punching press device for punching openings in profiled bars, and method of punching
AssigneeShoham Machines and Dies Ltd.
InventorAsher Schusheim
Life of this patent
Estimating the term…
Abstract
A method and devices are disclosed for punching one or more holes in extruded hollow profiled bars (50; 70; 270) where a back-up matrix (42; 150-550) must be inserted and located in precise alignment with the punching male punch (66; 90) die. Accordingly, the matrixes are mounted to portable mandrel rods (40; 140) provided with settable stop brackets (44; 146). The rods are placed in their exact operative punching position, and removed therefter for processing the next bar. The method further provides for simultaniously punching holes in more than one wall of the profiled bars.
Claims8
A punching press device for punching openings in profiled bars comprising
- a base structure,
- a male punch,
- a female punching matrix for backing the bars during the punching operation,
- an elongated mandrel rod having a first end mountable to the base structure and a second end carrying the backing bar;
- a releasable mounting means for releasably mounting the first end of the mandrel rod to the base structure, wherein the rod is removable from the base structure;
- adjustable distance setting means being mountable to the rod for setting the distance between the end of the bar and the punched opening.
A method of punching openings in profiled bars by a punching press device comprising a base structure, a male punch and a female punching matrix comprising the steps of:
- mounting the female punching matrix to an elongated rod;
- inserting the matrix and a portion of the rod into the profiled bar down a preset distance by using setting means;
- releasably attaching the rod/matrix/bar assembly to a fixed portion of the base structure so that the matrix becomes located in an appropriate operative position in relation to the male punch;
- punching the opening by the opening by the male punch;
- removing the rod/matrix/bar assembly from the press device;
- and
- removing the bar from the matrix.
Dependencies are inferred from the claim text.