Patent ID: 9126298
Filing Date: 2015-09-08
Classification: B23Q,Y10T

Abstract:
1. A machining center, comprising: a spindle to which a tool is attached in a detachable manner; a tool magazine provided in a tilted posture such that a rotation axis of the tool magazine is inclined with respect to horizontal and vertical directions, wherein the tool magazine is provided above a work space in which the spindle processes a workpiece, wherein the tool magazine is provided so that an end of the tool magazine that is closest to the spindle is lower than an end of the tool magazine that is farthest from the spindle, the tool magazine being rotatable and indexable about the rotation axis and having a plurality of tool holding parts for holding tools at locations along a circumference of the tool magazine, which tools are provided so as to be exchanged with, via relative movements of the tool magazine and the spindle, a tool held by the spindle; a shutter arranged in an openable and closable manner at a boundary between the tool magazine and the work space; a rotation drive unit rotating the tool magazine about the rotation axis; an opening and closing drive unit opening and closing the shutter; and a control unit controlling the rotation drive unit and the opening and closing drive unit wherein, the tool magazine has a tool-free area in which there are no tool holding parts at a part of the circumference of the tool magazine and has a tool-holding area in which there are tool holding parts at another part of the circumference of the tool magazine and the control unit controls the rotation drive unit and the opening and closing drive unit so that when the shutter is open, the tool-holding area of the tool magazine moves to be the end of the tool magazine that is closest to the spindle, and so that when the tool-free area moves to be the end of the tool magazine that is closest to the spindle, the shutter closes.