Patent ID: 8235773

Claim:
A dust-disposal assembly for a machine tool, comprising: a dust collection chamber, settled in a cutting area of a machine tool and having an opening; an extraction pipe, settled on a side wall of the dust-collection chamber for connecting a dust-extraction device; and a dust-block board, provided on the dust-collection chamber for covering the opening, wherein an interval with a predetermined width exists between the dust-block board and upper edges of walls of the dust-collection chamber in a manner that the dust-collection chamber is movable and the dust-block board is formed with a spindle hole allowing a spindle of the machine tool to pass therethrough, wherein the dust-block board comprises a first board member and a second board member, in which the first board member is fastened to an immovable part of the machine tool while the second board member that is formed with the spindle hole is movably connected with a front edge of the first board member; and a stopper for positioning the second board member at a lifted position thereof.