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:
Sep. 01, 2009
Filed:
May. 06, 2008
Naoya Tanaka, Aichi pref., JP;
Yoshiya Katsu, Aichi pref., JP;
Takamori Izaki, Aichi pref., JP;
Yamazaki Mazak Corporation, Aichi pref., JP;
Abstract
The present invention provides a tool holder interchangeably attached to a machine tool such as a combined machining lathe. A combined machining lathecomprises main spindlesandfor gripping a workpiece, and a machining main spindle headwhich rotates around a B axis. There are provided stockers Sand Sinside the lathe, and tool holdersandare respectively stored in the stockers Sand S. The tool holdercomprises a taper shank portionof a main shaft in a housingand four pull studs PSaround the taper shank portionof a main shaft, and is gripped by collet chucks of the machining main spindle head. Rotation of the taper shank portionof a main shaft is transmitted to a shaftvia a gear mechanism, to drive a drill toolto drill a deep hole.