EP 0549771 B1 19950524 - WOBBLE PRESS.
Title (en)
WOBBLE PRESS.
Title (de)
TAUMELPRESSE.
Title (fr)
PRESSE OSCILLANTE.
Publication
Application
Priority
- CH 9200151 W 19920722
- CH 221491 A 19910722
Abstract (en)
[origin: WO9301906A1] In a wobble press with a first wobbling die-half (1) and an axially parallel moving second half-die (2), the wobbling motion is generated by a plurality of hydraulically actuated working pistons (5) cyclically engaging with the wobbling half-die (1). By means of the elimination of centrifugal forces by a counterweight (G) connected to the wobbling half-die (1), the precise guiding of the die-halves (1, 2) by a centring disc (17) and the avoidance of a mechanical drive by using a multiple-pistons pump (20) and a hydraulic control system for the working pistons (5), it is possible to reduce undesirable rotary forces, vibration, friction and heat generation in such a way that substantially higher wobble frequencies and shorter processing times are attained at lower cost while maintaining the geometrical wobble effect owing to the higher wobble frequency, with a simple and rapidly acting control of the extent and form of the wobbling movement even during operation, thus making it possible to preselect the most suitable pressing programme.
IPC 1-7
IPC 8 full level
B21J 9/02 (2006.01)
CPC (source: EP US)
B21J 9/025 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
WO 9301906 A1 19930204; CH 685105 A5 19950331; DE 59202341 D1 19950629; EP 0549771 A1 19930707; EP 0549771 B1 19950524; JP H06505438 A 19940623; PL 298505 A1 19940110; US 5398536 A 19950321
DOCDB simple family (application)
CH 9200151 W 19920722; CH 221491 A 19910722; DE 59202341 T 19920722; EP 92915796 A 19920722; JP 50251592 A 19920722; PL 29850592 A 19920722; US 3003993 A 19930401