Abstract: A learning model construction device used in a machine tool which performs cutting processing constructs a learning model for learning temperature-related information after processing of a spindle motor during cutting processing. A learning model construction device includes an input unit that inputs cutting processing conditions and a present temperature of a spindle motor. The learning model construction device also includes a learning unit that receives the cutting processing conditions and the present temperature of the spindle motor and a label which is a temperature of the spindle motor after the cutting processing is performed as a set of teaching data and performs machine learning on the basis of the teaching data to thereby construct a learning model for learning temperature-related information. after processing of the spindle motor during the cutting processing.

Abstract: A mist removal system includes an observation unit that observes a situation related to the mist concentration in a factory, a first mist countermeasure unit that reduces the mist concentration in a machine tool, a second mist countermeasure unit that reduces the mist concentration in the factory, and a control unit. The control unit controls observation by the observation unit and interlocking operation of the first mist countermeasure unit and the second mist countermeasure unit. Furthermore, the control unit determines the control details of interlocking operation of the first and second mist countermeasure units based on the observation results of the mist concentration obtained by the observation unit.

Abstract: A non-removable fixed protective cover, of protective covers of a machine tool, is fitted with a light-projecting unit and a light-receiving unit, while a removable fixed protective cover and a movable protective cover are each fitted with a reflector. The light-projecting unit, light-receiving unit, and reflector are disposed so that light emitted from the light-projecting unit reaches the light-receiving unit only when the removable fixed protective cover is mounted in a proper position and the movable protective cover is fully closed.

Abstract: In a workpiece holding system, a communication unit performs short-range wireless communication between a control device and a workpiece holding device. That is, at least one of supply of power from the control device to the workpiece holding device and transmission of a command signal for a holding operation or a non-holding operation of a workpiece from the control device to the workpiece holding device is performed between a first communication unit and a second communication unit that make up the communication unit.

Abstract: A mist removal system includes an observation unit that observes a situation related to the mist concentration in a factory, a first mist countermeasure unit that reduces the mist concentration in a machine tool, a second mist countermeasure unit that reduces the mist concentration in the factory, and a control unit. The control unit controls observation by the observation unit and interlocking operation of the first mist countermeasure unit and the second mist countermeasure unit. Furthermore, the control unit determines the control details of interlocking operation of the first and second mist countermeasure units based on the observation results of the mist concentration obtained by the observation unit.

Abstract: Provided is an impeller in which a through hole is provided in a center of a base member of the impeller and a plurality of recessed parts are formed on a bottom surface of the base member. Meanwhile, a jig using in a cutting work of the impeller includes a seating part having a seating surface, a shaft part is erected from a central part of the seating part and is engageable with the through hole of the impeller, and protruded parts are formed on the seating surface and are engageable with the recessed parts provided on the base-member bottom surface of the impeller.

Abstract: A non-removable fixed protective cover, of protective covers of a machine tool, is fitted with a light-projecting unit and a light-receiving unit, while a removable fixed protective cover and a movable protective cover are each fitted with a reflector. The light-projecting unit, light-receiving unit, and reflector are disposed so that light emitted from the light-projecting unit reaches the light-receiving unit only when the removable fixed protective cover is mounted in a proper position and the movable protective cover is fully closed.

Abstract: Provided is an impeller in which a through hole is provided in a center of a base member of the impeller and a plurality of recessed parts are formed on a bottom surface of the base member. Meanwhile, a jig using in a cutting work of the impeller includes a seating part having a seating surface, a shaft part is erected from a central part of the seating part and is engageable with the through hole of the impeller, and protruded parts are formed on the seating surface and are engageable with the recessed parts provided on the base-member bottom surface of the impeller.

Abstract: A workpiece clamping jig configured to clamp a workpiece is provided with a baseplate, a fixed abutting member, and a movable abutting member. The baseplate has a pocket, which forms an air intake passage on the reverse side of a workpiece mounting surface, and a suction through-hole internally connecting the workpiece mounting surface and the pocket. The fixed abutting member is disposed on the baseplate and has a fixed abutting surface corresponding to the shape of the workpiece, and the movable abutting member has an abutting surface movable relative to the workpiece caused to abut against the fixed abutting surface of the fixed abutting member.

Abstract: A workpiece clamping jig configured to clamp a workpiece is provided with a baseplate, a fixed abutting member, and a movable abutting member. The baseplate has a pocket, which forms an air intake passage on the reverse side of a workpiece mounting surface, and a suction through-hole internally connecting the workpiece mounting surface and the pocket. The fixed abutting member is disposed on the baseplate and has a fixed abutting surface corresponding to the shape of the workpiece, and the movable abutting member has an abutting surface movable relative to the workpiece caused to abut against the fixed abutting surface of the fixed abutting member.