Abstract: A fan-equipped motor includes: a motor for rotating a spindle, the motor including a hollow-shaped motor shaft in which a through hole is formed; and a fan for cooling the motor, the fan including a hollow-shaped rotary shaft in which a through hole is formed, and a plurality of blades attached to the rotary shaft, the fan being disposed on the side of the motor that is opposite to the spindle. The motor shaft and the rotary shaft are disposed so that cooling air produced by the fan flows in a different passage and in a different direction from a gas supplied into the through hole of the rotary shaft and flowing in the through hole of the motor shaft.

Abstract: A fan-equipped motor includes: a motor for rotating a spindle, the motor including a hollow-shaped motor shaft in which a through hole is formed; and a fan for cooling the motor, the fan including a hollow-shaped rotary shaft in which a through hole is formed, and a plurality of blades attached to the rotary shaft, the fan being disposed on the side of the motor that is opposite to the spindle. The motor shaft and the rotary shaft are disposed so that cooling air produced by the fan flows in a different passage and in a different direction from a gas supplied into the through hole of the rotary shaft and flowing in the through hole of the motor shaft.

Abstract: A motor able to prevent axial displacement of a rotor in a simple structure without increasing the number of parts of the motor. The motor includes a rotor including a shaft, a housing configured to support the shaft rotatably and movably in a limited manner in an axial direction, a flange disposed on an axially outside of the housing and configured to rotate integrally with the shaft, the flange projecting radially outward from the shaft and being configured to prevent a foreign object from entering the housing, and a temporary tacking structure provided in at least one of the flange and the housing, and configured to temporarily tack the housing and the flange to each other in the axial direction.

Abstract: A motor, to which a rotary joint supporting structure for supporting a rotary joint is attached, turns a spindle. The motor includes a motor housing, a rotary shaft having a hollow shape and penetrating through the motor housing in the axial direction of the spindle, a flinger integrally attached to the rotary shaft outside the motor housing and disposed on the side to which the rotary joint supporting structure is attached, and a peripheral wall provided on the motor housing and projecting in the axial direction of the spindle so as to surround the periphery of the flinger. A plurality of cutouts are formed in the peripheral wall so as to establish communication between the interior and the exterior of the peripheral wall.

Abstract: A motor, to which a rotary joint supporting structure is attached, turns a spindle. The motor includes a motor housing, a rotary shaft that is hollow, the flinger that is integrally attached to the rotary shaft outside the motor housing, and a peripheral wall that is provided in the motor housing and projects in the axial direction of a spindle so as to surround the periphery of the flinger. The peripheral wall has cutouts in its side surface so as to establish communication between the interior and exterior of the peripheral wall, to thereby form protrusions projecting in the axial direction of the rotary shaft and an annular top plate portion provided on the distal end of the protrusions.

Abstract: An electric motor includes a stator having a tubular shape, a rotor rotatable around a rotary axis and having a rotary spindle, a first housing part disposed so as to partially house the rotary spindle, a second housing part disposed at the other end of the stator in the rotary axis direction, a third housing part at a side opposite to the first housing part in the rotary axis direction with respect to the second housing part, a plurality of ventilation parts formed so as to communicate with at least the stator, the second housing part, and the third housing part, and a plurality of fans for ventilating the plurality of ventilation parts, the plurality of fans being disposed in the third housing part on a plane perpendicular to the rotary axis so as not to overlap the rotary axis.

Abstract: To provide an electric motor enabling easy and high-precision balance correction, and a machine toll including this electric motor. An electric motor (1) includes: a cylindrical stator (2); a rotor (3) having a rotary shaft part (31) inserted inside of the stator (2); a housing (4) installed to both ends in an axial direction of the stator (2); an opening (51a) provided in at least one outer peripheral lateral face of the housing (4), and disposed to be separated from an internal space (S) of the stator and a ventilation passage (9) formed in the stator (2); and a balance correction component (6, 61) that is installed to the rotary shaft part (31), and corrects balance of the rotor (3), in which the balance correction component (61) is exposed to outside from the opening (51a); and a machine tool (10) includes this electric motor (1).

Abstract: Provided is a motor enabling more simple and efficient cleaning of the inside of an air path. The motor includes a stator, a housing which holds the stator, a fan arranged outside the stator, a fan cover which houses the fan and is mounted on the housing, an air path including an inlet and an outlet for a cooling gas, and a first cleaning hole extending from a first opening that faces and opens to the air path at a position closer to the outlet than the inlet to a second opening which opens to the outside.

Abstract: A motor, to which a rotary joint supporting structure is attached, turns a spindle. The motor includes a motor housing, a rotary shaft that is hollow, the flinger that is integrally attached to the rotary shaft outside the motor housing, and a peripheral wall that is provided in the motor housing and projects in the axial direction of a spindle so as to surround the periphery of the flinger. The peripheral wall has cutouts in its side surface so as to establish communication between the interior and exterior of the peripheral wall, to thereby form protrusions projecting in the axial direction of the rotary shaft and an annular top plate portion provided on the distal end of the protrusions.

Abstract: A motor, to which a rotary joint supporting structure for supporting a rotary joint is attached, turns a spindle. The motor includes a motor housing, a rotary shaft having a hollow shape and penetrating through the motor housing in the axial direction of the spindle, a flinger integrally attached to the rotary shaft outside the motor housing and disposed on the side to which the rotary joint supporting structure is attached, and a peripheral wall provided on the motor housing and projecting in the axial direction of the spindle so as to surround the periphery of the flinger. A plurality of cutouts are formed in the peripheral wall so as to establish communication between the interior and the exterior of the peripheral wall.

Abstract: To provide an electric motor enabling easy and high-precision balance correction even after operating over a long period, and a machine toll including this electric motor. An electric motor includes: a cylindrical stator; a rotor having a rotary shaft part inserted inside of the stator; a housing installed to both ends in an axial direction of the stator; a terminal box that is mounted to the housing and accommodates a terminal block; an opening provided so as to open within the terminal box through the housing, and disposed to be separated from a ventilation passage formed in the stator; and a first balance correction component that is installed to the rotary shaft part, and corrects balance of the rotor, in which the first balance correction component is exposed within the terminal box from the opening; and a machine tool includes this electric motor.

Abstract: A motor able to prevent axial displacement of a rotor in a simple structure without increasing the number of parts of the motor. The motor includes a rotor including a shaft, a housing configured to support the shaft rotatably and movably in a limited manner in an axial direction, a flange disposed on an axially outside of the housing and configured to rotate integrally with the shaft, the flange projecting radially outward from the shaft and being configured to prevent a foreign object from entering the housing, and a temporary tacking structure provided in at least one of the flange and the housing, and configured to temporarily tack the housing and the flange to each other in the axial direction.

Abstract: A machine learning apparatus learning an operating command to an electric motor. The machine learning apparatus is configured to learn an operating command to an electric motor. The machine learning apparatus comprises a status observing part observing an amount of power fed to an electric motor, a temperature of the electric motor, a load of the electric motor, and vibration of the electric motor as status variables and a learning part learning an operating command to an electric motor according to a set of training data prepared based on the status variables.

Abstract: An electric motor includes a stator having a tubular shape, a rotor rotatable around a rotary axis and having a rotary spindle, a first housing part disposed so as to partially house the rotary spindle, a second housing part disposed at the other end of the stator in the rotary axis direction, a third housing part at a side opposite to the first housing part in the rotary axis direction with respect to the second housing part, a plurality of ventilation parts formed so as to communicate with at least the stator, the second housing part, and the third housing part, and a plurality of fans for ventilating the plurality of ventilation parts, the plurality of fans being disposed in the third housing part on a plane perpendicular to the rotary axis so as not to overlap the rotary axis.

Abstract: To provide an electric motor enabling easy and high-precision balance correction even after operating over a long period, and a machine toll including this electric motor. An electric motor includes: a cylindrical stator; a rotor having a rotary shaft part inserted inside of the stator; a housing installed to both ends in an axial direction of the stator; a terminal box that is mounted to the housing and accommodates a terminal block; an opening provided so as to open within the terminal box through the housing, and disposed to be separated from a ventilation passage formed in the stator; and a first balance correction component that is installed to the rotary shaft part, and corrects balance of the rotor, in which the first balance correction component is exposed within the terminal box from the opening; and a machine tool includes this electric motor.

Abstract: To provide an electric motor enabling easy and high-precision balance correction, and a machine toll including this electric motor. An electric motor (1) includes: a cylindrical stator (2); a rotor (3) having a rotary shaft part (31) inserted inside of the stator (2); a housing (4) installed to both ends in an axial direction of the stator (2); an opening (51a) provided in at least one outer peripheral lateral face of the housing (4), and disposed to be separated from an internal space (S) of the stator and a ventilation passage (9) formed in the stator (2); and a balance correction component (6, 61) that is installed to the rotary shaft part (31), and corrects balance of the rotor (3), in which the balance correction component (61) is exposed to outside from the opening (51a); and a machine tool (10) includes this electric motor (1).

Abstract: A rotary joint support structure includes a rotary joint holding part which covers contact parts between a rotating side member and a stationary side member, at least one drain hole which extends from the outside to the rotary joint holding part, a first cleaning passage which communicates with the rotary joint holding part, a hollow shaft holding part which covers the hollow shaft and hollow shaft surrounding part, at least one cutaway part which is formed so as to communicate the outside with the hollow shaft holding part, and a second cleaning passage which is formed inside the housing corresponding to the at least one cutaway part.

Abstract: A machine learning apparatus learning an operating command to an electric motor. The machine learning apparatus is configured to learn an operating command to an electric motor. The machine learning apparatus comprises a status observing part observing an amount of power fed to an electric motor, a temperature of the electric motor, a load of the electric motor, and vibration of the electric motor as status variables and a learning part learning an operating command to an electric motor according to a set of training data prepared based on the status variables.

Abstract: A machine tool includes a cooling fluid supplying part, e.g., a fan or a flow path, for supplying a cooling fluid which dissipates heat generated from the machine tool during operation. The cooling fluid supplying part is operable to supply the cooling fluid independently of a cooling action of a machining point of the machine tool. The machine tool also includes a cleaning part for cleaning the cooling fluid supplying part. The cooling fluid supplying part may be a fan or a flow path of the cooling fluid.

Abstract: A rotary joint support structure includes a rotary joint holding part which covers contact parts between a rotating side member and a stationary side member, at least one drain hole which extends from the outside to the rotary joint holding part, a first cleaning passage which communicates with the rotary joint holding part, a hollow shaft holding part which covers the hollow shaft and hollow shaft surrounding part, at least one cutaway part which is formed so as to communicate the outside with the hollow shaft holding part, and a second cleaning passage which is formed inside the housing corresponding to the at least one cutaway part.