EP 0102429 A1 19840314 - Compound die assembly.
Title (en)
Compound die assembly.
Title (de)
Verbundwerkzeug.
Title (fr)
Outillage composé.
Publication
Application
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
IPC 8 full level
B21D 28/14 (2006.01)
CPC (source: EP)
B21D 28/14 (2013.01)
Citation (search report)
- [Y] DE 2505667 A1 19760819 - PKM PLANUNGSGESELLSCHAFT FUER
- [Y] CH 564386 A5 19750731 - STYNER & BIENZ AG
- [Y] DE 2357519 A1 19741212 - ANDREW ENG CO
- [Y] CH 325224 A 19571031 - PATRIGNANI LEONIDA [FR]
- [A] US 1543010 A 19250623
- [A] DE 2144085 A1 19730308 - SIEMENS AG
- [A] US 3125917 A 19640324
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