The controller for a machine tool according to the present invention makes it possible to discharge both a coolant and an oil mist from a through hole provided in the tool equipped to a main axis of a machine tool, allows a processing program to instruct the discharge of either the coolant or the oil mist, and carries out such a control that a state where the above-described tool is detached from the main axis is maintained during a predetermined period of time at the time of replacing the tool, and at the same time, the oil mist is discharged from the above-described oil mist unit so as to remove the coolant from the above-described piping during the predetermined period of time.

The present invention relates to a machine tool which has the following: a machine bed 10 which is supported on machine feet 3, 3a and is formed from a supporting structure of ribs which are connected to one another, wherein two guide rails 1 are arranged on the top side, on opposite outer sides of the machine bed 10, and a machine table 2 is provided between the two guide rails 1, wherein first main ribs 11 are provided on either side of the machine bed 10, the profile of the said first main ribs, in cross section of the machine bed 10, beginning below the guide rails 1 and extending obliquely inwards in the machine bed 10 to external machine feet 3a in order to introduce loads, which act on the guide rails 1, into the machine feet 3, 3a.

A cylindrical filtration filter includes a cylindrical filter main body. The filter main body is constituted by at least two split filters. Each of the split filters has an arc shape in cross section. Each of the split filters includes a filter element for filtration and side frame bodies provided along side portions of the filter element. The side frame body of one of the two split filters adjacent to each other includes a first facing surface having an uneven shape. The side frame body of the other split filter includes a second facing surface having an uneven shape complementary to the first facing surface. The first facing surface and the second facing surface are fitted to each other when the filter main body is assembled.

A machining swarf detection apparatus that detects presence or absence of machining swarf in a machining chamber of a machine tool includes an illumination unit that illuminates line laser light onto a detection area in the machining chamber, an imaging unit that images the detection area and acquires an image as an inspection image, and an image processor (controller) that detects the presence or absence of the machining swarf based on an image of the line laser light imaged in the inspection image.

A power tool includes a control for the motor of the power tool that senses an operating characteristic of the motor and controls the operation of the power tool based on the sensed characteristic. The sensed characteristic includes variations in reluctance of the motor. A controller may sense changes on load on the motor as a result of interaction between a working element such as a saw blade or drill bit and the work piece. The controlled operation may include variation in speed or torque or both, or may include stopping the motor. Emergency conditions may be sensed by changes in reluctance.

The washing nozzle for washing an inside of the machine tool with fluid includes a base portion having a tubular passage inside thereof, a supply port through the tubular passage, and a rotary member rotatable about an axis parallel to a surface on which the base portion is mounted, the rotary member having inside thereof a nozzle jet port and a nozzle flow passage allowing communication between the tubular passage and the nozzle jet port, wherein the jet port is formed so that fluid jetted from the jet port of the rotary member hits the surface on which the base portion is mounted and the jet of the fluid causes the rotary member to rotate about the parallel axis.

A dust bag includes a frame disposed inside the bag main body. The frame includes at least one non-flexible portion extending in the first direction and/or a second direction perpendicular to the first direction so as not to have flexibility in the first direction, and at least one flexible portion coupled with the at least one non-flexible portion and extending in an intersection direction intersecting with the first direction and the second direction so as to have flexibility in the first direction. The frame is configured to be extensible and compressive in the first direction due to the at least one flexible portion deflected when an external force is applied in the first direction. A total width of the at least one flexible portion in the first direction is equal to or wider than a total width of the at least one non-flexible portion in the first direction.

A swarf handling apparatus installed in a machining tool that performs machining operation accompanied with production of stringy swarf includes a swarf catching device. The swarf catching device includes a holder unit that holds the stringy swarf when the stringy swarf makes contact with the holder unit. The swarf catching device causes the holder unit to be floated in a region around a machining point in such a manner that the position of the holder unit is varied relative to the machining point, for catching the stringy swarf in the holder unit.

A portable booth assembly for receiving a work piece to facilitate working on a work area of the work piece including a housing and an inner core disposed within an interior area of the housing is provided. The portable booth assembly includes an aperture that is formed in the housing and the inner core. The aperture is configured to receive the work piece. The inner core defining the aperture is configured to be supported by the work piece if the work piece is large, or support the work piece if the work piece is small, and isolate the work area within the portable booth assembly. The portable booth assembly further includes a cut out formed in the housing. The cut out is configured to enable access to the work area for working on the work area.

A coolant flow guide for grinder includes a base including a tilted bottom wall having a predetermined tilt angle, a peripheral wall disposed around the tilted bottom wall and defining with the tilted bottom wall a diversion channel having a top opening and a partition wall located on the tilted bottom wall to divide the diversion channel into two flow passages that slope downwardly to the diversion port, and a workpiece positioning unit mounted on the base above the flow passages for holding a workpiece. Thus, when the grinder is operated to grind the workpiece, the debris thus produced is carried by the applied coolant to flow through the flow passages to the outside of the base via the diversion port.