PUNCHING METHOD AND APPARATUS THEREFOR

Title:

PUNCHING METHOD AND APPARATUS THEREFOR

Document Type and Number:

Japanese Patent JPS5284589

Kind Code:

A

Abstract:

A method and a device for holing an oblong member, particularly a guard rail, substantially directly in front of a hole in a second member, particularly a pole, by utilizing a punching device comprising a punch and first and second pressure means with different ratios, of which the first means causes the punch to abut the oblong member, and the second means effects further movement of the punch to carry out holing in said member.

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Inventors:

HANSU ORUSON

Application Number:

JP13271376A

Publication Date:

July 14, 1977

Filing Date:

November 04, 1976

Export Citation:

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Assignee:

OLSSONS HANS MEK VERK

International Classes:

B21D28/24; B26D5/12; (IPC1-7): B21D28/32

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