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:
Nov. 30, 1976
Filed:
Aug. 25, 1975
Toyoda Koki Kabushiki Kaisha, , JA;
Abstract
A machine tool is provided with a transfer arm for interchanging a first tool, inserted into a rotary spindle and positioned at a predetermined angular position, with another tool stored within a storage magazine, the spindle and each of the tools being respectively provided with drive and driven protrusions, which are engaged with each other for a positive drive operation by inching the spindle in a tool exchange operation. Interference preventers, which are provided upon the magazine in order to respectively cooperate with the driven protrusions, angularly correspond to the drive protrusion positioned at the predetermined angular position, such that each of the tools may be inserted into the spindle without interference between the drive and driven protrusions.