A control device (10) for a die cushion mechanism that produces a force for a slide (24) in a press machine, comprising slide velocity command-forming means (61) for forming a velocity command for the slide (24), die cushion velocity command-forming means (62) for forming a velocity command for said...http://www.google.co.uk/patents/US7401492?utm_source=gb-gplus-sharePatent US7401492 - Control device for a die cushion mechanism
