Global Patent Index - EP 0131770 B1

EP 0131770 B1 19870902 - METHOD OF FINE-CUTTING WORK PIECES, AND FINE-CUTTING TOOL FOR CARRYING OUT THE METHOD

Title (en)

METHOD OF FINE-CUTTING WORK PIECES, AND FINE-CUTTING TOOL FOR CARRYING OUT THE METHOD

Publication

EP 0131770 B1 19870902 (DE)

Application

EP 84106900 A 19840616

Priority

DE 3324680 A 19830708

Abstract (en)

[origin: US4586360A] Fine die stamping of workpieces from sheet metal is effected by clamping the workpiece between a die plate and guide plate, supporting the portion of the material to form the article by an ejector which is displaced along with the punch, and driving the supported portion of the material into a hole in the die plate having flanks tapered away from the guide plate and punch so that swaging occurs on the separated portion with or upon its separation from the balance of the workpiece material.

IPC 1-7

B21D 28/16

IPC 8 full level

B21D 28/14 (2006.01); B21D 28/16 (2006.01); B26F 1/14 (2006.01)

CPC (source: EP US)

B21D 28/16 (2013.01 - EP US); Y10T 29/49472 (2015.01 - EP US)

Designated contracting state (EPC)

CH DE FR IT LI

DOCDB simple family (publication)

EP 0131770 A1 19850123; EP 0131770 B1 19870902; DE 3324680 A1 19850124; DE 3465711 D1 19871008; JP H0337445 B2 19910605; JP S6068118 A 19850418; US 4586360 A 19860506

DOCDB simple family (application)

EP 84106900 A 19840616; DE 3324680 A 19830708; DE 3465711 T 19840616; JP 13924684 A 19840706; US 62818384 A 19840706