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:
Aug. 31, 1999
Filed:
May. 20, 1998
Dieter Goedderz, Erkelenz, DE;
Roland Heffe, Korschenbroich, DE;
Alfred Heimann, Aachen, DE;
Josef Janssen, Moanchengladbach, DE;
Hegenscheidt-MFD GmbH, Erkelenz, DE;
Abstract
A machine for hard-rolling a workpiece such as a crankshaft includes a drive apparatus (7) for rotating the crankshaft (8, 113), suspension apparatuses (9 to 17), hard-rolling devices (18 to 26, 111) movably supported by the suspension apparatuses, and a crankshaft transport apparatus (100). Each hard rolling device is a scissors jaw including two scissors arms (46, 47, 114, 115), with respective hardening roller heads (66 to 69, 118) and respective opposite counter-support heads (74, 119) mounted on the upper ends of the scissors arms facing the crankshaft. Each suspension apparatus (9 to 17) is slidably adjustable along the rotation axis (27) of the drive apparatus (7). A drive arrangement (49, 122) is connected to the lower ends of the scissors arms directed away from the crankshaft, for closing and opening the scissors arms to a maximum opening width (59, 130) that is larger than twice the maximum structural radius (60, 131) of the crankshaft. A respective angled bellcrank lever (78) is pivotally supported on each suspension apparatus, with one shank thereof pivotally connected to one scissors arm and the other shank thereof connected to a piston cylinder unit (84), which in turn is connected to the suspension apparatus (9 to 17). Guide members (88, 89) are provided for guiding the upper ends of the scissors arms.