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:
Jan. 19, 1988
Filed:
Nov. 12, 1986
Kengo Yoshioka, Kariya, JP;
Yoshihiko Nishida, Kariya, JP;
Toyoda Koki Kabushiki Kaisha, Kariya, JP;
Abstract
In a cutting machine tool, a spindle head rotatably carries a vertical tool spindle, and an angle spindle attachment is detachably mounted on the lower surface of the spindle head. The angle spindle attachment carries an attachment spindle adapted to receive a cutting tool holder and rotatable by the tool spindle about an axis inclined relative to the axis of the tool spindle. The attachment spindle incorporates therein a draw bar mechanism wherein a draw bar is axially rearwardly urged by the resilient force of springs. To advance the draw bar against the springs, the angle spindle attachment is provided with a push rod movable in a horizontal direction. A thrust direction converting mechanism is further provided in the angle spindle attachment to axially moves the draw bar when the push rod is axially moved by an unclamping device. The unclamping device has an actuation rod, which is horizontally moved by a cylinder device to effect the axial movement of the push rod. When a horizontal spindle attachment is mounted on the spindle head in place of the angle spindle attachment, the unclamping device also operates to move a push rod which pushes a draw bar of the horizontal spindle attachment.