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. 14, 2002
Filed:
Nov. 10, 1999
Akira Watanabe, Kurita-gun, JP;
Katsumi Kawagoe, Kurita-gun, JP;
Mitsuyuki Konishi, Kurita-gun, JP;
Isamu Takehana, Hiroshima, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A machining device equipped with a spindle position interchanger comprises a longitudinal table provided on a bed and movable in a horizontal direction; a transverse table provided on the longitudinal table and movable in a direction perpendicular to the longitudinal table; a column erected on the transverse table and turnable in a horizontal plane; a first spindle head vertically movable along the column; a second spindle head provided at a position different from (at a position at 1800° to, or opposite to) the position of the first spindle head and vertically movable along the column independently of the first spindle head; a first main spindle and a second main spindle attached to the first spindle head and the second spindle head, respectively; a tool change arm for changing a tool in the second main spindle; and a tool magazine mounted on an upper portion of the column for housing many tools. This machining device, and a method for interchanging spindle positions in the machining device obviate the need for the time for tool change done while stopping the rotation of the main spindle.