EP 0920932 B1 20010808 - Method and apparatus for punching a workpiece
Title (en)
Method and apparatus for punching a workpiece
Title (de)
Verfahren und Vorrichtung zum Lochen eines Werkstückes
Title (fr)
Procédé et dispositif de poinçonnage d'une pièce à usiner
Publication
Application
Priority
DE 19747607 A 19971028
Abstract (en)
[origin: EP0920932A1] The punch (10) advances to cut the wall of the workpiece (8), and returns to free the rotating cutting edge (22) of the tool (2). The movement is superimposed by an oscillating motion, and/or the high pressure engaging on the wall of the workpiece is applied by the pressure medium (D) in the same rhythm as the vibrations. Punching takes place during non/oscillating de/increasing high pressure of the medium.
IPC 1-7
IPC 8 full level
B21D 26/02 (2006.01); B21D 28/18 (2006.01); B21D 28/28 (2006.01); B26F 1/40 (2006.01)
CPC (source: EP)
B21D 28/28 (2013.01)
Designated contracting state (EPC)
AT BE DE ES FR GB IT NL PT
DOCDB simple family (publication)
EP 0920932 A1 19990609; EP 0920932 B1 20010808; AT E203937 T1 20010815; DE 19747607 A1 19990506; DE 59801162 D1 20010913; ES 2162380 T3 20011216
DOCDB simple family (application)
EP 98120235 A 19981028; AT 98120235 T 19981028; DE 19747607 A 19971028; DE 59801162 T 19981028; ES 98120235 T 19981028