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:
Mar. 19, 2002
Filed:
Dec. 30, 1999
Erling Zackrisson, Göteborg, SE;
Franco Caldana, Lidkoeping, SE;
Aktiebolaget SKF, Gothenburg, SE;
Abstract
A number of annular or short tubular elements are obtained from an elongate tube having a length calculated as a multiple of the length of the elements. A tube is automatically transferred into a chuck of a twin-spindle lathe to turn the inner bore of an end portion of the tube. The end portion is then cut off the tube, thereby obtaining an annular element. The element is automatically reversed and fitted to a mandrel for turning its outer surface and its end where the cutting was performed. The so finished or partly-finished element is then automatically delivered to an outfeed conveyor. Such a sequence is repeated cyclically until the last portion of the tube is processed, leaving no waste tips of the tube. A numerically controlled lathe for performing the process is also disclosed.