EP 1101580 A2 20010523 - Punching apparatus and punching method
Title (en)
Punching apparatus and punching method
Title (de)
Vorrichtung sowie Verfahren zum Stanzen
Title (fr)
Dispositif ainsi que procédé de poinçonnage
Publication
Application
Priority
JP 32712699 A 19991117
Abstract (en)
In a stamping apparatus, a subtracter 22b and an adder 23b compare an output value of an amplifier 29 which is a signal proportional to ÄTÜ expressing the torque generated at a fulcrum 101 by the reaction force ÄFÜ from the material to be stamped 6, to a pulse . duty setting value stored in a pulse . duty setting section 21b, and a signal in which the difference is added to the pulse . duty setting value, is generated, and a switch 25 inputs the signal into a comparator 24b in order to make the signal the comparison signal to the chopping wave outputted from a chopping wave generation circuit 26' in the PWM pulse generation circuit 26. <IMAGE>
IPC 1-7
IPC 8 full level
B44B 5/00 (2006.01)
CPC (source: EP)
B44B 5/0066 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00125144 A 20001117