The tool of the inverted deep hole drilling machine is gun drill, and the drill bit is single edge drill. There is a cooling hole in the center of the drill bit, which can be cooled by high-pressure oil. The fixture is installed on the screw rod of the lead screw nut transmission mechanism through the nut, and the fixture can move up and down along the screw rod. During processing, the drill bit is inverted, the workpiece is located above the tool, and the hole surface of the drilling inlet is downward. When drilling, the drill bit only rotates and does not move, and the workpiece moves from top to bottom. The iron filings in the drilling process will automatically fall and discharge from the blade groove of the drill bit due to their own weight, so as to reduce the wear between the workpiece, iron filings and the drill bit. It is conducive to heat dissipation, improve the service life of the drill bit and improve the machining accuracy.
Its unique processing characteristics can greatly save the floor space and tool consumables, and can meet the high-efficiency processing of short shaft.
