Kabushiki Kaisha Toshiba

Toshiba Industrial Products Manufacturing Corporation

Sintokogio, Ltd.

Toshiba Infrastructure Systems & Solutions Corporation

Aishin Aw Co., Ltd.

Toshiba Industrial Products and Systems Corporatio

Takashi Hanai

Masanori Arata

Norio Takahashi

Minoru Hirata

Takeshi Araki

Masakatsu Matsubara

Motoyasu Mochizuki

Yasuo Hirano

Wataru Ito

Takashi Araki

Takehiro Sugino

Kazuto Sakai

Hisashi Harada

Toshihiko Oya

Takuya Nitta

Yukihiko Kazao

Nobutake Aikura

Masanori Ohashi

Yoichi Seo

Kozo Sugita

Masahiko Yamashiki

Yutaka Hashiba

Yusuke Matsuoka

Shuji Takasu

Hideki Hisada

Ken Takeda

Toyonobu Yamada

Mikio Takabatake

Kazunori Ogura

Yoshio Hashidate

Takayuki Akatsuka

Hiroki Matsuoka

Chidai Isaka

Yoshimitsu Ichino

Youichi Seo

Tadashi Morishima

Nobutaka Aikura

Tooru Yamagiwa

Toshio Innan

Akito Kondou

Akito Kondo

Hiroshi Morohashi

Akihito Kondo

An object is to accurately estimate loss-on-ignition in a short time. A loss-on-ignition estimation apparatus includes at least one processor configured to carry out an estimation step, the estimation step including estimating the loss-on-ignition of foundry sand with use of a learned model constructed by means of machine learning. The learned model is configured to receive, as input, (1) sand weight data relating to a weight of the foundry sand detected in a calcination period and (2) at least one of (i) sand property data relating to one or more properties of the foundry sand, (ii) additive data relating to one or more additives added to the foundry sand, and (iii) calcination environment data relating to a calcination environment detected in the calcination period. The learned model is configured to generate, as output, an estimated loss-on-ignition of the foundry sand.

Loss-on-ignition estimation apparatus, loss-on-ignition estimation method, machine-learning apparatus, and machine-learning method

A core inspection device for inspecting a core, the device including a color sensor configured to detect a measured value of each color component of the color of the surface of the core, and a determination unit configured to compare the measured value of at least one color component detected by the color sensor with a threshold prepared corresponding to the at least one color component, thereby determine if a strength property of the core is acceptable or not.

Core inspection device, core inspection system, and core inspection method

Providing a method for reducing occurrences of a mold shift of a cope and a drag that have been molded by a flaskless molding machine and have been assembled by estimating a cause of a mold shift based on measurements and by taking appropriate measures, and a flaskless molding line that uses the method. The method for reducing occurrences of a mold shift of a cope and a drag () that have been molded by a flaskless molding machine () and have been assembled comprises a step of measuring specific data at positions where a mold shift may occur during a process for manufacturing or taking out the cope and the drag, and a step of determining if the obtained specific data are within an allowable range.

Method and flaskless molding line for reducing mold shift of cope and drag that have been molded by flaskless molding machine and assembled

A rotary electric device includes a stator, and a rotor including a rotor core having magnetic poles and permanent magnets at the magnetic poles. Each of two embedding holes in each magnetic pole includes a loading region in which the permanent magnet is loaded, an inner periphery-side gap, and an outer periphery-side gap. Defining D as the minimum distance from the outer periphery-side gap to an outer peripheral surface of the rotor core, Was the width of a teeth of the stator, H0 as the sum of the magnetomotive forces generated in the portion corresponding to a magnetic pole angle &#x398; in one magnetic pole, and H1 as the magnetomotive force generated in one tooth, the rotor core is formed such that D&#x2265;W&#xd7;(H0/H1).

Rotary electric device

A method is provided for measuring a shift between a carrier for a pattern (a carrier plate) and a flask and preventing a defect caused by a shift in the cavity parts. The method for preventing a defect caused by the shift in the cavity parts in molding a cope and a drag with flasks by using a cope flask () that is assembled with a carrier plate () for the cope flask and a drag flask () that is assembled with a carrier plate () for the drag flask, comprises the steps of measuring a shift between the carrier plate () for the cope flask and the cope flask (), measuring a shift between the carrier plate () for the drag flask and the drag flask (), measuring a shift between the cope flask () and the drag flask () that have been assembled, determining if a shift in cavity parts is within an allowable range, wherein the data on the shift is obtained based on the shift between the carrier plate () for the cope flask and the cope flask (), the shift between the carrier plate () for the drag flask and the drag flask (), and the shift between the cope flask () and the drag flask (, that have been assembled.

Method for preventing defect caused by shift in cavity parts

A method of manufacturing a stator core includes punching out core members from an electrical steel sheet in three rows arrangement side by side along a width direction of the electrical steel sheet. Each of the core members has connecting projections. The connecting projections project radially outward from an outer periphery of the core member. The punched out core members are stacked to form the stator core. Each of the core members in two of the three rows arrangement have a connecting projection angled at a first angle from the width direction of the electrical steel sheet. Each of the core members in a third row having a connecting projection angled at a different second angle from the width direction of the electrical steel sheet.

Method of manufacturing stator core

A stator of a rotating electrical machine includes a stator core, plural stator coil groups constituting plural phases, plural pieces of interphase insulation paper for insulation of coils belonging to different phases, and plural connecting strips formed integrally with the interphase insulation paper pieces. Each interphase insulation paper piece has ends inserted between coil ends of unit coils belonging to an identical phase thereby to function as interphase insulation paper for insulation of coils belonging to the identical phase. Each interphase insulation paper piece for insulation of coils belonging to the different phases, functioning as the interphase insulation paper piece for insulation of coils of the identical phase, insulates between coil ends of the first unit coils of respective first and second series circuits constituting the inner circumference side phase and a coil end of the unit coil constituting the outer circumference side phase.

Stator of rotating electrical machine and rotating electrical machine

A stator of rotating electrical machine includes a stator core and stator coils. The stator coils have n number (where n&#x2267;6) unit coils, a first coil group and a second coil group. The unit coils of the first coil group include a first unit coil located nearest the first power supply terminal. The unit coils of the first coil group include a second unit coil. The unit coils of the first coil group include a third unit coil located third nearest the first power supply terminal and adjacent to the second unit coil of the second coil group. The unit coils of the second coil group include a third unit coil located third nearest the second power supply terminal and adjacent to the second unit coil of the first coil group.

A rotor for an electric rotating machine includes d-axis through holes located on respective d-axes, hollow shafts formed in both axial sides of a rotating shaft not inserted into a rotor core, presser plates mounted on both axial ends of the rotor core, cooling grooves formed in faces of the presser plates in contact with the rotor core, a plurality of presser plate refrigerant outlet holes in the presser plates, the presser plate refrigerant outlet holes of one of the presser plates having diameters different from diameters of the presser plate refrigerant outlet holes of one of the other presser plates, and a refrigerant channel formed so that a refrigerant supplied into one of the hollow shafts of the rotating shaft flows through the refrigerant channel and further through the hollow shaft wall hole of said one hollow shaft and the radial grooves of the respective presser plates.

Cooling structure for rotor core in electric rotating machine

For an electrical reluctance rotary machine, a stator has a winding as an armature, and a rotor has permanent magnet implanting slots provided in a rotor core at lateral sides magnetic poles configured to produce reluctance torque along directions of magnetic flux passing through the magnetic poles to produce reluctance torque, and permanent magnets inserted in the permanent magnet implanting slots so as to cancel magnetic flux of the armature intersecting that magnetic flux, to control a magnetic field leaking at ends of the magnetic poles, having circumferential magnetic unevenness. The electrical reluctance rotary machine is configured to meet a relationship, such that where W[mm] is a width of permanent magnet, R [mm] is a radius of the rotor, and P is the number of poles.

Permanent-magnet reluctance electrical rotary machine

A sand-introducing device that uses air for introducing molding sand in a molding space or spaces is provided. The device is provided with air-permeable partitioning plates that define a double-walled structure together with the wall of the body of the device. The air-permeable partitioning plates are easily produced, they can easily inject pressurized air of a desired pressure, and they will not need regular maintenance. The body of the device, which acts as a pressure tank, defines a double-walled structure together with the air-permeable partitioning plates (), thereby defining chambers (). In the sand-introducing device that uses air, while molding sand is fluidized by pressurized air injected from the air-permeable partitioning plates, it is introduced in a molding space. Each air-permeable partitioning plate is made of a porous resin or metal.

Sand-introducing device using air, and method and apparatus for producing mold

Sand-introducing device using air, and method and apparatus for producing a mold

Included are a ring-shaped stator and a ring-shaped rotor arranged inside the stator; the stator includes a stator core with armature windings; the rotor includes a rotor core in which a plurality of permanent magnets are inserted and cooling holes are formed, a coolant flowing in each of the cooling holes; and each of the cooling holes is formed so as to have a sectional view which is a convex toward the outer periphery thereof.

Rotating electrical machine

A neutral-point terminal device for use with a neutral point side bundle of wires in a polyphase winding of a dynamoelectric machine includes a metal sleeve and an insulating cap covering the metal sleeve. The metal sleeve is covered by the insulating cap so that distal ends of the bundled neutral point side wires remain in an interior of the metal sleeve. The metal sleeve is then pressurized thereby to be deformed so as to be secured to the distal ends of the bundled wires.

Neutral-point terminal device for dynamoelectric machine

A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions. The rotor core has two keys which are formed at two positions on an inner circumference of the rotor core. The positions are spaced 180 degrees apart from each other with respect to the rotor core. The rotor core is divided into a plurality of blocks and the core materials constituting at least one block have the magnetic concave and convex portions shifted by a predetermined angle relative to the core materials constituting the other or another block on the basis of a center line passing through the keys. A whole or part of the core materials of at least one block are located circumferentially 180 degrees apart form the core materials constituting the other or another block.

Rotor for reluctance type rotating machine

Growing community of inventors

Nagoya, Japan

Takashi Hanai