A machine tool has a cover that prevents chips generated by machining and cutting fluid from scattering around and a plurality of movable nozzles with liquid discharge directions thereof being movable so as to wash out chips that have adhered to or accumulated on an inner surface of the cover. The machine tool is capable of changing a discharge direction of each of the movable nozzles individually. The machine tool compares the state of the inside of the cover before start of machining with the state of the inside of the cover after chips are generated to determine an adhesion or accumulation state of chips. The machine tool thus calculates the liquid discharge direction to wash out chips from the movable nozzles based on a result of the determination.

An adjusting device, a device for directing manufacturing aids including an adjusting device, and a gripper device having an adjusting device. The adjusting device includes a body and an adjustment plate mounted on the body for rotation about a central axis. The adjustment plate has two guide slots distributed around the circumference for adjustment objects mounted on the body so as to be pivotable about tangential pivot axes, wherein centerlines of the guide slots extend about the central axis along a spiral path.

A nozzle body wherein replacement with cutting tool is easy and oscillation is small, and machine tool to which nozzle body can be attached, machine tool being equipped with turret having simple construction. Nozzle body includes: a body; a shank that is attached to a main spindle of machine tool: shaft body that is provided in a protruding manner on shank and rotatably supported by the body; annular path that is provided on outer circumference of shaft body; a discharge orifice that is provided at the leading end of shaft body; a first path that is provided inside shaft body and provides communication between discharge orifice and annular path; detent that is provided to the body; and a second path that is provided to the body and opens into the detent, the second path communicating with the annular path.

A tool accessory used to apply different volumes of a cutting fluid to the tap under CNC control by causing the machine to undergo different pump cycles in which the rotational speed of the tool is increased above the tapping rotated and then quickly returned to the tapping rotation. The tool includes a tapping head, a reservoir filled with cutting fluid, a centrifugal force-reactive pump and at least two discharge nozzles. The pump includes a plurality of biased piston springs that are forced outward and store centripetal force when the tool is rotated at speeds above normal tapping speed. When the rotational speed of the tool is reduced, the piston springs overcome the centrifugal forces and force cutting fluid through the discharge nozzles. The volume of cutting fluid discharged is controlled by adjusting the viscosity of the cutting fluid, the tool's maximum speed, by using different size discharge nozzles, and by using different pump cycles.