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:
Nov. 29, 2016
Filed:
Nov. 30, 2015
Applicant:
Gfm—gmbh, Steyr, AT;
Inventor:
Alfred Seeber, Steyr, AT;
Assignee:
GFM GmbH, Steyr, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21J 13/10 (2006.01); B21J 13/12 (2006.01); B21D 43/10 (2006.01); B21J 9/20 (2006.01);
U.S. Cl.
CPC ...
B21J 13/12 (2013.01); B21D 43/10 (2013.01); B21J 9/20 (2013.01); B21J 13/10 (2013.01);
Abstract
A forging machine is described having at least one clamping head () for a work-piece () and having a rotational drive, which is controllable in dependence on the engagement of the forging tools (), for the clamping head (). To provide advantageous drive conditions, it is proposed that the rotational drive comprise at least one hydraulic motor (), which is connected to a pump circuit (), and which is connected to a hydraulic circuit (), which is connected in parallel to the pump circuit (), for the periodic supply and discharge of a predefined quantity of hydraulic medium in dependence on the stroke frequency and/or the stroke location of the forging tools ().