EP 3003702 B1 20180725 - METHOD FOR CONTROLLING A PRESS WITH A VARIABLE GEAR RATIO
Title (en)
METHOD FOR CONTROLLING A PRESS WITH A VARIABLE GEAR RATIO
Title (de)
VERFAHREN ZUR STEUERUNG EINER PRESSE MIT VARIABLER GETRIEBEÜBERSETZUNG
Title (fr)
PROCÉDÉ PERMETTANT DE COMMANDER UNE PRESSE À DÉMULTIPLICATION VARIABLE DE LA TRANSMISSION
Publication
Application
Priority
- DE 102013105468 A 20130528
- EP 2014060475 W 20140521
Abstract (en)
[origin: WO2014191285A1] The invention relates to a method for controlling a press (10). The press (10) has an electric drive motor (21) and a press transmission (22) with a variable gear ratio (Ü). A tappet (12) of the press (10) is mounted in a movable manner in a stroke direction (R) and is connected to the electric drive motor (21) via the press transmission (22). The gear ratio (Ü) continuously increases and to a high degree as the tappet moves from an upper reversal point (OT) to a lower reversal point (UT). In order to prevent the press (10) from exceeding a specified maximum pressing force (Fmax), a position-dependent maximum torque (Mmax) is specified for the electric drive motor (21). The control device compares each applied drive torque (M) with the position-dependent maximum torque (Mmax). As soon as the drive torque (M) exceeds the position-dependent maximum torque (Mmax), the danger of the force applied by the tappet (12) exceeding the maximum pressing force (Fmax) during an ongoing forming movement is detected. The control device (12) then reduces the drive torque (M) in order to prevent damage to the press (10).
IPC 8 full level
B30B 15/28 (2006.01); B30B 15/00 (2006.01); B30B 15/14 (2006.01)
CPC (source: EP US)
B30B 15/0094 (2013.01 - EP US); B30B 15/148 (2013.01 - EP US); B30B 15/281 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102013105468 A1 20141204; DE 102013105468 B4 20151001; BR 112015027825 A2 20170725; CN 105263699 A 20160120; CN 105263699 B 20171107; EP 3003702 A1 20160413; EP 3003702 B1 20180725; ES 2685021 T3 20181005; US 2016107407 A1 20160421; WO 2014191285 A1 20141204
DOCDB simple family (application)
DE 102013105468 A 20130528; BR 112015027825 A 20140521; CN 201480030653 A 20140521; EP 14726132 A 20140521; EP 2014060475 W 20140521; ES 14726132 T 20140521; US 201414894008 A 20140521