EP 3440520 A1 20190213 - METHOD AND DEVICE FOR CLOSED-LOOP CONTROL OF RAM MOVEMENT AND RAM FORCES IN MULTI-POINT SERVO HYBRID PRESSES
Title (en)
METHOD AND DEVICE FOR CLOSED-LOOP CONTROL OF RAM MOVEMENT AND RAM FORCES IN MULTI-POINT SERVO HYBRID PRESSES
Title (de)
VERFAHREN UND VORRICHTUNG ZUR REGELUNG DER STÖSSELBEWEGUNG UND DER STÖSSELKRÄFTE AN MEHRPUNKT-SERVO-HYBRID-PRESSEN
Title (fr)
PROCÉDÉ ET DISPOSITIF PERMETTANT DE RÉGULER LE MOUVEMENT DU COULISSEAU ET LES FORCES DU COULISSEAU SUR DES SERVOPRESSES MULTIPOINTS HYBRIDES
Publication
Application
Priority
- DE 102016106286 A 20160406
- DE 2017100273 W 20170406
Abstract (en)
[origin: WO2017174077A1] The invention relates to a method for the closed-loop control of ram movement and ram forces in multi-point servo hybrid presses, In said method, the servo-electric drive associated with each pressure point or each pressure point group of the ram has a combinatorial interaction, as a main function by means of a pressure wave function, with drives integrated into the press as a secondary function in the form of hydraulic pressure pads in the pressure points of the ram drive and/or as process pads acting as machine- or die pads, such that with a reduced drive power a high closing force of the ram is achieved before and during the closed-position phase of the latter for forming and hardening the hot-formed pressed part and a low opening force of the ram is achieved after the closed-position phase, and that in order to compensate any process fluctuations occurring as a result of varying mechanical and thermal variables influencing the characteristics of the hot-formed shaped parts, each hydraulic pad in the pressure points of the ram and/or each process pad can be closed-loop controlled independently of one another in a path- and force-dependent manner before, during and after the closed-position phase of the ram in the region of the lower reversing point, in order to achieve active closed-loop control of the immersion depth and inclination in combination with the servo-electric main drive.
IPC 8 full level
G05B 19/042 (2006.01); B30B 15/26 (2006.01)
CPC (source: EP US)
B30B 1/28 (2013.01 - EP US); B30B 15/0035 (2013.01 - US); B30B 15/0041 (2013.01 - US); B30B 15/14 (2013.01 - EP US); B30B 15/16 (2013.01 - EP US); B30B 15/26 (2013.01 - EP US); G05B 19/042 (2013.01 - EP US); G05B 19/182 (2013.01 - US); G05B 2219/37399 (2013.01 - US); G05B 2219/41273 (2013.01 - US)
Citation (search report)
See references of WO 2017174077A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017174077 A1 20171012; BR 112018067350 A2 20190115; CN 109074042 A 20181221; CN 109074042 B 20220510; DE 102016106286 A1 20171012; DE 102016106286 B4 20230302; EP 3440520 A1 20190213; JP 2019513559 A 20190530; JP 6856664 B2 20210407; US 10870251 B2 20201222; US 2019126582 A1 20190502
DOCDB simple family (application)
DE 2017100273 W 20170406; BR 112018067350 A 20170406; CN 201780022316 A 20170406; DE 102016106286 A 20160406; EP 17727473 A 20170406; JP 2018552740 A 20170406; US 201716091525 A 20170406