A machine tool has a splash guard and a guiding section. The splash guard has a first sidewall portion on which an end portion of a telescopic cover abuts, a slope portion slanting from the first sidewall portion along an expansion and contraction direction of the telescopic cover, a second sidewall portion perpendicularly extending downward from the slope portion, and a bottom portion horizontally extending from the second sidewall portion more inward than a lower end of the slope portion in the splash guard. The guiding section is disposed more inward than the lower end of the slope portion in the splash guard and configured to guide the cutting fluid falling from the slope portion, toward the bottom portion.

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.

A method for determining and/or monitoring the state of a protective cover, includes the steps of a) obtaining a first state value of at least one characteristic physical, mechanical and/or chemical property of the protective cover at a first point in time; and b) obtaining a second state value of the at least one characteristic property of the protective cover at a second point in time, which is to subsequent to the first point in time; and c) comparing the obtained state values; and d) determining the state of the protective cover based on the comparison performed in step c).

A vertically sliding manual opening and closing door with good one-handed operability, including: a plate-like door member configured to open and close an opening section by being slid vertically; a support member configured to guide the vertical sliding of the door member by a support section configured to support left and right end sections of the door member; and a lock mechanism configured to position the door member that has been raised.

An uppermost cover member of a telescopic cover is fixed to a movable member (a saddle or a table), whereas a lowermost cover member of the telescopic cover is fixed to a stationary member (a pedestal or the saddle) of a machine tool, the stationary member being stopped with respect to a direction of movement of at least the movable member. Attached members, which project outwardly along the direction of movement from the telescopic cover, and which are attached by fastening members to the stationary member, are provided on the cover member. The telescopic cover is provided with a skirt, which is capable of sliding along the direction of movement with respect to the cover member, and which covers the attached members.

First and second V-shaped link structures are arranged in an overlapping manner such that a first fixed pin and a second fixed pin of the first V-shaped link structure are positioned relative to a movable pin to one side with respect to the direction parallel to the longitudinal direction of a guide rail while a first fixed pin and a second fixed pin of the second V-shaped link structure are positioned relative to a movable pin to the side opposite to that in the first V-shaped link structure.

The machine tool comprises a headstock provided with a main spindle; a driving unit which moves the headstock in a main spindle axial direction and has a feed mechanism extended in the main spindle axial direction and a front end supporter which rotatably supports a front end of the feed mechanism; a first front cover mounted on the headstock in a first position between the main spindle and the feed mechanism with respect to a diameter direction from a main spindle axis toward the feed mechanism; and a second front cover mounted on the front end supporter in a second position between the main spindle and the feed mechanism. Part of the feed mechanism is covered by both of the first front cover and the second front cover when at least part of the first front cover is on the rear side of the second front cover.

An upright machining center is characterized in being provided with: x-axis guides for moving and guiding a table in the left-right direction on a bed; a column provided on the bed and provided with an opening that straddles the x-axis guides in the front-back direction so that a moving body, on which the table is provided, can enter therein in the left-right direction; a saddle, which is disposed on the upper part of the column so as to be movable in the front-back direction and for which a first y-axis guide that extends in the front-back direction on the right side of the left-right direction and a left second y-axis guide that is located lower and parallel thereto are provided; and a main shaft head, which is disposed on the left side surface of the saddle and moves in the vertical direction.

The present disclosure relates to engine-driven tool (1) comprising a rotatable work tool (2) and an engine (4) for propelling a first driving pulley (28) via a clutch wheel (30) comprised in a power transferring unit (27) and having an outer edge. The first driving pulley (28) and the clutch wheel (30) arc arranged to rotate around a common driving axis (38). The power transferring unit (27) comprises an endless drive belt (9) that is arranged propel the rotatable work tool (2) when the first driving pulley (28) is propelled. A fan arrangement (13) is arranged to convey air front a dust channel (11) formed between a shielding cover (8) and the rotatable work tool (2), and comprises a fan turbine (26) that is connected to a fan pulley (29) connected to the drive belt (9) is arranged to propel the fan pulley (29). A first overlap line (50) extends along the outer edge (52) of the clutch wheel (30), perpendicular to the extension of the common driving axis (38), the first overlap line (50) further extending via the fan turbine (26).

This tool exchange device for a machine tool uses an exchange arm to exchange tools between a processing area and a tool accommodation area which are partitioned by a partition wall provided with an opening and a shutter capable of opening and closing the opening. In the tool exchange device, an imaging device is used to capture an image of a tool in the tool accommodation area, the length of the tool is calculated from the captured image of the tool, the opening width of the shutter is determined in accordance with the length of the tool, and the shutter is opened to the determined opening width.