The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2017
Filed:
Oct. 14, 2011
Dietmar Schollhammer, Goppingen, DE;
Dietmar Schollhammer, Goppingen, DE;
Schuler Pressen GmbH, Goppingen, DE;
Abstract
The drawing press () according to the invention has for driving its ram () a directionally reversing gear mechanism (), for example a coupling gear mechanism, and at least one servomotor (). The servomotor () passes through the reversal point (Ut) of the ram movement, which is predetermined by the kinematics of the coupling gear mechanism, for example the extended position of an eccentric drive. During the closing of the die (), that is to say during a press stroke, the servomotor () is activated in such a way that it first passes through this reversal point (Ut), then stops, reverses and then passes through it once again, in order to open the die () again. Consequently, the braking to a standstill and re-acceleration of the servomotor for the upper ram () takes place while the actual drawing operation is still or already being performed, i.e. during the forming of the metal blank, which significantly reduces the cycle time.