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:
Feb. 13, 1990
Filed:
Jun. 18, 1988
Rudolf Schmidt, Reichenbach, DE;
EMAG Maschinenfabrik GmbH, , DE;
Abstract
An arrangement for centering and clamping of work pieces comprises tension levers swingably supported on a base plate, the tension levers of which are arranged coaxially on a pivot, while the other tension lever is supported on a second pivot which has the same distance to the center of the arrangement as the hinge pin. The contact surfaces with which the tension levers grasp a work piece, are designed so that the perpendicular line extends on the particular tangent at the contact point between contact surface and work piece through the center of the arrangement. This forces the work piece, independently of its diameter, continuously into the center in the clamping process and, consequently, centers it. Due to the arrangement of the tension levers, inserting work pieces transversely to the chuck axis is possible in spite of the center clamping process.