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:
Jun. 27, 1989
Filed:
Aug. 12, 1987
Applicant:
Inventor:
Giuseppe Badagnani, San Giorgio Piacentino, IT;
Assignee:
Mandelli S.P.A., Piacenza, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23C / ; B23B / ; F16H / ;
U.S. Cl.
CPC ...
400183 ; 74 8915 ; 408137 ; 409231 ;
Abstract
A machining center or machine tool comprises a bed, structure to support and position the workpieces, and a rotary spindle fed with worktools by an automatic tool changer and carried by a spindlehead which also carries the driving motor therefor. The spindlehead moves back and forth along a rectilinear path under the control of a circulating-ball screw and nut assembly, the screw of which is rigid with the spindlehead and has its axis intersecting that of the spindle. The lead nut of the same assembly is caused to rotate by a motor and is kept axially fixed.