Patent ID: 8628279
Filing Date: 2014-01-14
Classification: B23B,B23Q,Y10T

Abstract:
1. A chip discharge device for a machine tool, comprising a spindle head; a spindle that is supported by the spindle head to be pivotal with respect thereto and provided with a spindle through hole formed to be centered on the axis of the spindle and parallel to the axis line thereof and that can attach thereto a tool holder having a chip suction hole formed therein for sucking in chips as waste by machining; a draw bar that is inserted into the spindle through hole so that the draw bar can move in parallel to the spindle center axis line in order to clamp the tool holder to the spindle and unclamp the tool holder therefrom and provided with a draw bar through hole that is formed to be centered on the axis of the draw bar and parallel to the axis line thereof, the draw bar through hole allowing the chips to pass therethrough, and