Abstract: Provided is a servo press machine having a configuration that allows miniaturization of the servo press machine, and a motor using the same. A servo press machine includes a servomotor, a crankshaft rotated by driving of the servomotor, a connecting rod connected to an eccentric portion of the crankshaft, and a slide connected to the connecting rod, wherein two connecting rods are connected to the crankshaft, the servomotor is an axial gap motor, a rotor of the axial gap motor is assembled with the crankshaft between the two connecting rods, and a stator of the axial gap motor is fixed to a crown in which the crankshaft is housed.

Abstract: Torque is improved in a composite torque rotating electric machine that uses permanent magnets having a low residual magnetic flux density such as ferrite magnets, and includes: a stator comprising armature windings arranged at a fixed interval at multiple positions on the inner periphery; a rotor which has a permanent magnet in a cylindrical core comprising laminated magnetic steel sheets and is arranged inside of the stator; and magnetic flux blocking units provided across the circumferential direction on the outer periphery of the rotor that block the closed loop magnetic flux generated around the stator windings. The magnetic flux blocking units can be multiple permanent magnets, with a non-magnetic body such as an air gap disposed between them. The distance between the permanent magnets and the non-magnetic part can be smaller than the interval at which the armature windings are arranged.

Abstract: A composite torque rotating electric machine includes a stator having armature windings arranged at multiple positions in a circumferential direction, a rotor having a cylindrical core, first permanent magnets arranged on axes (d) and in the circumferential direction on the outer periphery of the rotor, second permanent magnets arranged on axes (d) on the inner periphery side of the rotor across from the permanent magnets on the outer circumference side, third permanent magnets on axes (q) and extending in the longitudinally and radially of the rotor, and air gaps on the outer periphery side of the third permanent magnets and intermediate in the circumferential direction of the first permanent magnets. The radial distance between the first and second magnets is greater than the circumferential distance between the first permanent magnets and the air gaps. A rectifier having multiple slits is disposed between the first permanent magnets and the air gaps.

Abstract: Provided is a servo press machine having a configuration that allows miniaturization of the servo press machine, and a motor using the same. A servo press machine includes a servomotor, a crankshaft rotated by driving of the servomotor, a connecting rod connected to an eccentric portion of the crankshaft, and a slide connected to the connecting rod, wherein two connecting rods are connected to the crankshaft, the servomotor is an axial gap motor, a rotor of the axial gap motor is assembled with the crankshaft between the two connecting rods, and a stator of the axial gap motor is fixed to a crown in which the crankshaft is housed.

Abstract: A bran removing wire-mesh tube includes: bran removing wire-mesh tube parts 28 divided in more than one in a circumferential direction in planar view; and a plurality of support pillars 33 erected at intervals in the circumferential direction to respectively fix both side edges of the divided bran removing wire-mesh tube parts 28. Each of the support pillars 33 is provided with an elongated resistor 34 that suppresses grains from moving in the circumferential direction along with rotation of grinding type grain cleaning rolls 26. The resistor 34 is urged by an elastic member 37 to a position at which the resistor 34 protrudes toward the inside of a grain cleaning chamber 30. Further, the resistor 34 is provided so as to be movable in a radial direction to a position farther from the grain cleaning chamber 30 due to resistance from the grains.

Abstract: A permanent magnet dynamoelectric machine of surface magnet type is configured to have a flanged U-shaped magnet presser made of a conductive metal, and to fix the magnet presser to a rotor core using a fixing member so as to fix a part of an outer periphery of a permanent magnet in a radial direction with a flange of the magnet presser. This ensures the permanent magnet dynamoelectric machine of surface magnet type to be adaptable to large-torque, high-speed and large-capacity.

Abstract: A motor control device which can determine a magnetic pole position for a magnetic pole position detector included in a permanent magnet motor in which the reluctance torque proportion is larger than the magnet torque proportion is provided. In a permanent magnet synchronous motor having multi-phase windings of N axes (N?2), the windings of optionally selected K axes (K?N) are DC excited using corresponding independent power supplies.

Abstract: The purpose of the present invention is to improve torque in a composite torque rotating electric machine which uses permanent magnets having a low residual magnetic flux density such as ferrite magnets. This composite torque rotating electric machine is characterized by being provided with: a stator comprising armature windings arranged at a fixed interval at multiple positions on the inner periphery; a rotor which has a permanent magnet in a cylindrical core comprising laminated magnetic steel sheets and which is arranged inside of the stator; and magnetic flux blocking units which are provided across the circumferential direction on the outer periphery of the rotor and which block the closed loop magnetic flux generated around the stator windings. The magnetic flux blocking units are provided with multiple permanent magnets, and a non-magnetic body disposed between said permanent magnets. Further, the non-magnetic body is an air gap.

Abstract: A composite torque rotating electric machine includes a stator having armature windings arranged at multiple positions in a circumferential direction, a rotor having a cylindrical core, first permanent magnets arranged on axes (d) and in the circumferential direction on the outer periphery of the rotor, second permanent magnets arranged on axes (d) on the inner periphery side of the rotor across from the permanent magnets on the outer circumference side, third permanent magnets on axes (q) and extending in the longitudinally and radially of the rotor, and air gaps on the outer periphery side of the third permanent magnets and intermediate in the circumferential direction of the first permanent magnets. The radial distance between the first and second magnets is greater than the circumferential distance between the first permanent magnets and the air gaps. A rectifier having multiple slits is disposed between the first permanent magnets and the air gaps.

Abstract: A permanent magnet motor includes a P-pole-implanted permanent magnet rotator containing a ferrite magnet in a laminated silicon steel sheet, wherein, at one pole, a U-shaped permanent magnet comprising three parts, and, at the outer periphery of the U-shaped magnet, one outer-periphery permanent magnet disposed longitudinally in the peripheral direction are provided to generate permanent magnet torque. At one pole, the permanent magnet rotator generates reluctance torque using two salient poles formed between the U-shaped permanent magnet and the outer-periphery permanent magnet. One central salient pole is formed between the adjacent poles. A stator comprises an M-phase stator winding that is a distributed winding, and a stator core having Ns slots. The ratio of Ns/P/M is a common fraction. When the width of the center salient pole is set to ?cp and the slot pitch of the stator core is set to ?s, ?cp is smaller than ?s.

Abstract: A bran removing wire-mesh tube includes: bran removing wire-mesh tube parts 28 divided in more than one in a circumferential direction in planar view; and a plurality of support pillars 33 erected at intervals in the circumferential direction to respectively fix both side edges of the divided bran removing wire-mesh tube parts 28. Each of the support pillars 33 is provided with an elongated resistor 34 that suppresses grains from moving in the circumferential direction along with rotation of grinding type grain cleaning rolls 26. The resistor 34 is urged by an elastic member 37 to a position at which the resistor 34 protrudes toward the inside of a grain cleaning chamber 30. Further, the resistor 34 is provided so as to be movable in a radial direction to a position farther from the grain cleaning chamber 30 due to resistance from the grains.

Abstract: A motor control device which can determine a magnetic pole position for a magnetic pole position detector included in a permanent magnet motor in which the reluctance torque proportion is larger than the magnet torque proportion is provided. In a permanent magnet synchronous motor having multi-phase windings of N axes (N?2), the windings of optionally selected K axes (K?N) are DC excited using corresponding independent power supplies.

Abstract: A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided.

Abstract: A permanent magnet rotating electric machine comprises a stator having stator windings wound round a stator iron core and a permanent magnet rotor having a plurality of inserted permanent magnets in which the polarity is alternately arranged in the peripheral direction in the rotor iron core. The rotor iron core of the permanent magnets is composed of magnetic pole pieces, auxiliary magnetic poles, and a stator yoke, and furthermore has concavities formed on the air gap face of the magnetic pole pieces of the rotor iron core of the permanent magnets, gently tilting from the central part of the magnetic poles to the end thereof. In a permanent magnet rotating electric machine, effects of iron loss are reduced, and an electric car using highly efficient permanent magnet rotating electric machine are realized.

Abstract: A permanent magnet rotating electric machine comprises a stator having stator windings wound round a stator iron core and a permanent magnet rotor having a plurality of inserted permanent magnets in which the polarity is alternately arranged in the peripheral direction in the rotor iron core. The rotor iron core of the permanent magnets is composed of magnetic pole pieces, auxiliary magnetic poles, and a stator yoke, and furthermore has concavities formed on the air gap face of the magnetic pole pieces of the rotor iron core of the permanent magnets, gently tilting from the central part of the magnetic poles to the end thereof. In a permanent magnet rotating electric machine, effects of iron loss are reduced, and an electric car using highly efficient permanent magnet rotating electric machine are realized.

Abstract: The present invention comprises a stator, and a rotor which is disposed oppositely to the stator with a gap interposed. The stator comprises a stator core, and a distributed stator winding mounted to the stator core. The stator core comprises a ring-like yoke core, and a plurality of teeth cores which protrude from the yoke core in the radial direction. The rotor comprises a rotor core, and a plurality of permanent magnets embedded in the rotor core. A pair of non-magnetic portions is created inside the rotor core and on both sides of the circumferential width of a permanent magnet for one magnetic pole. In the rotor core located on the stator side of the pair of non-magnetic portions, a pair of magnetic paths is created as the result of the creation of the pair of non-magnetic portions. Furthermore, a groove or hole is created on the outer circumferential portion of the rotor core and between the adjacent magnetic poles.

Abstract: A rotating electric machine comprises a stator having stator salient poles, three-phases windings would around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said stator salient poles. The three-phase windings are concentratively wound around each of the stator salient poles, with windings of each phase wound around at more than one stator salient pole. The windings of each phase have a phase difference of voltage between at least one of the windings and the other.

Abstract: A pump is driven by a compact electric motor in which a coil is disposed in a ring form around and along a stator core which has a plurality of claw magnetic poles that extend alternately from both ends of one member of the stator core toward the end of the other member thereof. A stator core can be made from a compressed powder core by molding with resin, with the molded portion able to serve as a partition separating pump and motor units.

Abstract: A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided.

Abstract: A permanent magnet rotating electric machine comprises a stator having stator windings wound round a stator iron core and a permanent magnet rotor having a plurality of inserted permanent magnets in which the polarity is alternately arranged in the peripheral direction in the rotor iron core. The rotor iron core of the permanent magnets is composed of magnetic pole pieces, auxiliary magnetic poles, and a stator yoke, and furthermore has concavities formed on the air gap face of the magnetic pole pieces of the rotor iron core of the permanent magnets, gently tilting from the central part of the magnetic poles to the end thereof. In a permanent magnet rotating electric machine, effects of iron loss are reduced, and an electric car using highly efficient permanent magnet rotating electric machine are realized.