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:
May. 23, 1989
Filed:
May. 26, 1987
Applicant:
Inventor:
Alfred Gnann, Plochingen, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ; B23B / ;
U.S. Cl.
CPC ...
82 47 ; 82 48 ;
Abstract
The invention relates to a method for checking performance of the cutting-off operation on automatic lathes for working bar material or the like. In accordance with the invention, operating conditions are initiated at the end of a prescribed time interval for the cutting-off operation which result in relative rotation of the spindles in opposite directions in the event that the material has been completely severed at the cutting-off point. A discrepancy between the specified and the actual relative rotation is interpreted as a system failure due to the presence of a material link at the cutting-off point, whereupon a corresponding error signal is triggered.