Global Patent Index - EP 0102429 A1

EP 0102429 A1 19840314 - Compound die assembly.

Title (en)

Compound die assembly.

Title (de)

Verbundwerkzeug.

Title (fr)

Outillage composé.

Publication

EP 0102429 A1 19840314 (EN)

Application

EP 82304671 A 19820906

Priority

EP 82304671 A 19820906

Abstract (en)

A compound die assembly adapted to produce large-sized parts having a plurality of holes, complicated holes and/or lengthy holes wherein a blanking die (103) and a blanking punch (203) are made by wire-cut electro-discharge machining and are directly fixed onto a punch holder (101) and a die holder (201), respectively, a knockout plate (109) and a stripper plate (204) are also made by wire-cut electro-discharge machining and are fixed by hanger bolts onto the punch holder and the die holder through polyurethane rubbers (111, 206), respectively. Guide posts (30) ar epsilon fixed to the punch holder and extends through the die holder downwardly. A mount (40) to be fixed onto the press bolster has a flat top surface on which the die holder is fixedly mounted and has a plurality of guide-post-receiving holes (401) in which coil springs (402) are contained to raise the guide posts received together with the punch holder. A plurality of load-supporting elements (50) are fixed onto the bottom surface of the die holder near slug clearance holes thereof.

IPC 1-7

B21D 28/14; B21D 37/20

IPC 8 full level

B21D 28/14 (2006.01)

CPC (source: EP)

B21D 28/14 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE DE GB IT

DOCDB simple family (publication)

EP 0102429 A1 19840314; EP 0102429 B1 19870107; DE 3274957 D1 19870212

DOCDB simple family (application)

EP 82304671 A 19820906; DE 3274957 T 19820906