Fanuc Corporation

Akihiko Nagao

Naoki Sato

Akihiko Fujimoto

Akira Funakoshi

A telescopic cover has a plurality of cover pieces nested in the order of their size for extension and retraction. A rubber cushion is on a side surface of an end portion of an insert-side cover piece, a wiper is inside an upper surface of a receiving-side cover piece receiving the insert-side cover piece so as to contact the upper surface of the insert-side cover piece, and a stopper is on the inner side surface of the end portion so as to be offset from the position of the wiper and face the rubber cushion. When the telescopic cover is retracted so that the respective end surfaces of the receiving-side and insert-side cover pieces become flush with each other, a gap between the cover pieces is closed by the wiper.

Telescopic cover

To provide a telescopic cover having a structure in which a stopper is easy to be exchanged, and a machine tool. A telescopic cover of a machine tool is formed to be freely expandable and contractible in a predetermined direction. A first cover piece and a second cover piece have a pair of receiving side stoppers that project outward in both ends of side surfaces along a predetermined direction, and slits formed along the predetermined direction in between the pair of receiving side stoppers, as receiving side cover pieces. The second cover piece and the third cover piece have nesting side stoppers that are inserted into the slits by projecting outward in the side surfaces along the predetermined direction, and move between the pair of receiving side stoppers as nesting side cover pieces.

Telescopic cover and machine tool

A machine tool includes a saddle supported by a guide member installed on a bed and configured to move relative to the bed in a first direction and a table supported by a guide member installed on the saddle and configured to move relative to the saddle in a second direction orthogonal to the first direction. The machine tool further includes a protective cover installed on a side face of the table or the saddle which is parallel to a travel direction of the table or the saddle and adapted to protect the guide member from chips and a scraper installed on the protective cover and adapted to scrape out chips built up in a neighborhood of the guide member.

Machine tool equipped with chip scraper

A telescopic cover of a machine tool is provided with two movable covers connected by a joint, two pulleys mounted on the joint, and a single wire stretched around and between the two pulleys. One and the other ends of the wire are secured to the mobile element, and a middle portion of the wire to a fixed portion. In this arrangement, the two movable covers connected by the joint move half the movement stroke of the mobile element in association with the action of the mobile element.

Telescopic cover of machine tool

A feeder for a machine tool adapted to move a table relative to a saddle by rotation of a motor includes a ball thread nut fixed to the saddle and a ball thread shaft that engages with the ball thread nut in a rotatable manner but is immovable in an axial direction of the ball thread shaft relative to the table. The motor is fixed to the table and the ball thread shaft is coupled to the motor. A sum of a movable distance of the table relative to the saddle and a length of the saddle in the axial direction is shorter than a length of the table in the axial direction. The feeder further includes rails fixed to the table on its surface where the motor is fixed and bearings that are fixed to the saddle and bear the rails.

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Yamanashi, Japan

Akihiko Nagao