Abstract: A die machine for manufacturing a laminated iron core includes a first working row for punching out iron core pieces from a steel sheet material and a second working row for punching out electrically insulating sheet pieces from an electrically insulating synthetic resin sheet material. Each iron core piece includes a spindle hole and a plurality of slot holes for receiving coil windings. Each electrically insulating sheet includes a spindle hole and a plurality of slot holes which have a substantially similar configuration to, but are smaller than, the slot holes of the iron core pieces. The die machine includes a stacking die mold for selectively receiving the iron core pieces and the electrically insulating sheet pieces such that successive stacks of iron core pieces are sandwiched between electrically insulating sheet pieces.

Abstract: The invention provides a ball screw lubricative sealing device having a simplified lubrication mechanism. It is attachable to an installed standard ball screw nut, capable of retaining larger amount of lubricant and long supply of lubricant to the contacting screw parts, and further includes a sealing function. It includes: generally cylindrical case members having attachment part to be attached to both ends of a screw nut, respectively; plural thin seal plates made of lubricating oil impregnated felt-like fiber material which is a three-dimensionally crosslinked plastic fiber and resilient rubber members, and having a hole each and fitted inside said case member in such a state that they circumferentially overlap with each other, the hole having a shape corresponding to a lateral cross-sectional shape of a screw groove of ball screw shaft; and a plastic wiper fitted with a space from the thin seal plates inside each of the case member.

Abstract: The invention provides a ball screw lubricative sealing device having a simplified lubrication mechanism. It is attachable to an installed standard ball screw nut, capable of retaining larger amount of lubricant and long supply of lubricant to the contacting screw parts, and further includes a sealing function. It includes: generally cylindrical case members having attachment part to be attached to both ends of a screw nut, respectively; plural thin seal plates made of lubricating oil impregnated felt-like fiber material which is a three-dimensionally crosslinked plastic fiber and resilient rubber members, and having a hole each and fitted inside said case member in such a state that they circumferentially overlap with each other, the hole having a shape corresponding to a lateral cross-sectional shape of a screw groove of ball screw shaft; and a plastic wiper fitted with a space from the thin seal plates inside each of the case member.

Abstract: The invention provides a ball screw lubricative sealing device having a simplified lubrication mechanism. It is attachable to an installed standard ball screw nut, capable of retaining larger amount of lubricant and long supply of lubricant to the contacting screw parts, and further includes a sealing function. It includes: generally cylindrical case members having attachment part to be attached to both ends of a screw nut, respectively; plural thin seal plates made of lubricating oil impregnated felt-like fiber material which is a three-dimensionally crosslinked plastic fiber and resilient rubber members, and having a hole each and fitted inside said case member in such a state that they circumferentially overlap with each other, the hole having a shape corresponding to a lateral cross-sectional shape of a screw groove of ball screw shaft; and a plastic wiper fitted with a space from the thin seal plates inside each of the case member.

Abstract: A laminated iron core includes a plurality of stacked iron core pieces punched out from a thin steel sheet material, each iron core piece including a plurality of slot holes for receiving coil windings. At least one electrically insulating sheet piece is stacked on an outer surface of a lowermost iron core piece. The electrically insulating sheet pieces include a spindle hole and a plurality of slot holes which have a substantially similar configuration to, but are smaller than, the slot holes of the iron core pieces whereby edges of slot holes of electrically insulating sheet pieces extend outwardly beyond edges of slot holes of iron core pieces. Burrs formed at edges of slot holes of iron core pieces are covered with edges of slot holes of electrically insulating sheet pieces so that a coil can be wound safely without directly contacting the burrs.

Abstract: A laminated iron core includes a plurality of stacked iron core pieces punched out from a thin steel sheet material, each iron core piece including a plurality of slot holes for receiving coil windings. At least one electrically insulating sheet piece is stacked on an outer surface of a lowermost iron core piece. The electrically insulating sheet pieces include a spindle hole and a plurality of slot holes which have a substantially similar configuration to, but are smaller than, the slot holes of the iron core pieces whereby edges of slot holes of electrically insulating sheet pieces extend outwardly beyond edges of slot holes of iron core pieces. Burrs formed at edges of slot holes of iron core pieces are covered with edges of slot holes of electrically insulating sheet pieces so that a coil can be wound safely without directly contacting the burrs.

Abstract: A laminated iron core includes a plurality of stacked iron core pieces punched out from a thin steel sheet material, each iron core piece including a plurality of slot holes for receiving coil windings. At least one electrically insulating sheet piece is stacked on an outer surface of a lowermost iron core piece. The electrically insulating sheet pieces include a spindle hole and a plurality of slot holes which have a substantially similar configuration to, but are smaller than, the slot holes of the iron core pieces whereby edges of slot holes of the electrically insulating sheet pieces extend outwardly beyond edges of slot holes of iron core pieces. Burrs formed at edges of slot holes of iron core pieces are covered with edges of slot holes of electrically insulating sheet pieces so that a coil can be wound safely without directly contacting the burrs.

Abstract: The invention provides a ball screw lubricative sealing device having a simplified lubrication mechanism. It is attachable to an installed standard ball screw nut, capable of retaining larger amount of lubricant and long supply of lubricant to the contacting screw parts, and further includes a sealing function. It includes: generally cylindrical case members having attachment part to be attached to both ends of a screw nut, respectively; plural thin seal plates made of lubricating oil impregnated felt-like fiber material which is a three-dimensionally crosslinked plastic fiber and resilient rubber members, and having a hole each and fitted inside said case member in such a state that they circumferentially overlap with each other, the hole having a shape corresponding to a lateral cross-sectional shape of a screw groove of ball screw shaft; and a plastic wiper fitted with a space from the thin seal plates inside each of the case member.

Abstract: A pair of optical profile measuring systems 10, 20 are located at positions facing to both surfaces of a wafer 1 vertically supported at its edge. A thickness gauge 50 having one or more sensors is located between the optical systems 10, 20 for measuring thickness at several points on the wafer 1. Each optical system 10, 20 comprises a light emitter 11, 21 for discharging a measuring light beam 12, 22, a collimator lens 14, 24 for rectifying the light beam 12, 22 into a collimated beam, an optical flat 15, 25 for transmitting the collimated light beam 12, 22, a light detector 16, 26 receiving the light beams 12, 22 reflected on a surface of the wafer 1 and on a referential plane of the optical flat 15, 25 through the collimator lens 14, 24 and a computer 17, 27 for processing interference fringes which occur between the surface of the wafer 1 and the referential plane of the optical flat 15, 25.

Abstract: Method for measuring the surface shape of a thin element such as a silicon wafer measures the surface shapes of one surface and the other surface of the thin element by independently measuring the distance each to one surface and to the other surface of the thin element by rotating or moving the thin element within a single plane and independently moving the first and second measuring means along the first and second guide shafts. Apparatus for measuring the surface shape of the thin element measures the surface shapes of one surface and the other surface of the thin element by rotating or moving the thin element supported within the same plane by a supporting means, and independently measuring the distance each to one surface and to the other surface of the thin element by the first and second measuring means while independently moving the first and second sliders along the first and second guide shafts.

Abstract: A thin board holding device 2A for holding a thin board in a plane state to measure the thickness of a thin board is disclosed, which has a number of spot supports 3 with adsorbing portion for holding a thin board 1 attached by suction to the top. The thin board 1 is held in a multiple point support fashion to the spot supports 3. By moving a measuring terminal of a measuring instrument to a measuring point on the thin board, which has one surface of the thin board 1 set on the thin board holding device 2A, the level of the other surface of the thin board 1 from a reference surface A supporting the thin board holding device at a reference position is measured. The dimension from the reference position A to a thin board adsorption surface 3a of the spot support 3 is used as a computational constant, and the thickness of the thin board is calculated from the measured level of the other surface of the thin board 1 and the computational constant.

Abstract: A tube coupling according to the present invention comprises a coupling body, a separation prevention ring which is disposed in the coupling body to bite into the outer wall of a tube body fitted into the coupling body so to prevent the tube body from coming out, and a release ring which is disposed in the coupling body so to be movable in an axial direction within a predetermined range and releases the separation prevention ring from the tube body by pushing the separation prevention ring, wherein the separation prevention ring comprises a ring portion which contacts a back ring disposed in the coupling body; pushing portions which are radially formed in a large number within the ring portion, has a circular shape, have grooves which extends from the outside of the ring portion to the inside, and are pushed by an inside end of the release ring; and projections which are respectively formed at the tips of the pushing portions and pulled out of the outer wall of the tube body when they are pushed by the inside

Abstract: A pair of optical profile measuring systems 10, 20 are provided at positions faced to both sides of a wafer 1 vertically supported at its edge. Each system 10, 20 includes a light emitter 11, 21 for discharging a measuring light beam 12, 22, a collimator lens 14, 24 for rectifying the light beam 12, 22 into a collimated beam, an optical flat 15, 25 for transmitting the collimated light beam 12, 22, a light detector 16, 26 receiving the light beams 12, 22 reflected on a surface of the wafer 1 and on a referential plane of the optical flat 15, 25 through the collimator lens 14, 24 and a computer 17, 27 for processing interference fringes which occur between the surface of the wafer 1 and the referential plane of the optical flat 15, 25. Profiles of main and back surfaces of the wafer as well as its thickness variation are easily measured utilizing light interference fringes corresponding to both sides of a wafer.

Abstract: A control/supervisory signal transmission/reception system includes a central station and a number of local stations which are interconnected by a common data line carrying a three-level voltage signal so as to transfer data signals between the central and local stations. Information concerning structures and functions of the local stations is grasped automatically by using frames having ID codes differing from one to another frame, whereby the central station can check occurrence of breakage of the transmission line or shut-down of the local station inclusive of the units to be controlled/supervised associated with the local station. The frame includes a start signal field, a data signal field, a local station ID code field and an end signal field. In the local station, an ID code allocated thereto and a count value indicating data reception/transmission address are preset.

Abstract: A composite rotary joint for both fluid and electrical connections particularly suitable for application with a rotary table. The rotary joint provides a substantially more compact and serviceable arrangement than existing rotary joints.

Abstract: This invention relates to a chuck device with multistage degree of opening composed of an oscillating actuator acting as a driving part and an arm opening or closing mechanism installed at one end part to which an output shaft of the oscillating actuator is projected, the actuator having a plurality of oscillating vanes concentrically arranged within casings, the casing for an inner oscillating vane structure being rotatably supported in respect to the casing for an outer oscillating vane structure so as to form a rotary shaft and at the same time an oscillating vane of the outer oscillating structure is fixed to the rotary shaft.

Abstract: A die for manufacturing a laminated core for a rotor or a stator for an electric motor or a generator including rotary stacking and a skewing using a rotary die to stack the thin iron plates punched to a predetermined shape. Rotation of the crank shaft of the press is converted into a rotary stacking angle to take it out from the indexing device. Rotation of the crank shaft of the press is converted into a predetermined corresponding skew angle from the indexing device through a crank mechanism to take it out of the gear device. An amount of rotation having outputs from the indexing device and from the gear device combined with each other is taken out at the output shaft through a rotary friction transmitting mechanism and a rotation of this output shaft is applied to the rotary die.

Abstract: A remote control system comprises a central control station and at least one local station installed remotely from the central control station and connected thereto through a power transmission line. The local station has a plurality to devices connected in parallel to one another at the output. The power for actuating the devices is supplied from the central control station. For controlling actuation of the devices, binary control signals are serially sent from the central control station to the local station through the power transmission line in synchronism with clock pulses in a train including a start pulse. In the local station, the binary control signal are extracted in response to the start signal and converted into parallel control signals by utilizing the clock pulses to be applied to output circuits provided for controlling the devices.

Abstract: A rotary apparatus of a successive feed die unit of a press apparatus includes an indexing apparatus and a frictional transmission apparatus for transmitting rotation to a lower rotatable die of the die unit for manufacturing a core lamination assembly. The indexing apparatus converts rotation inputted from a crank shaft of a press apparatus into intermittent rotation of a predetermined angle and outputs it to the frictional transmission apparatus. The frictional transmission apparatus has a changeable rotation speed without steps, inputs the intermittent rotation from the indexing apparatus, adds rotational volume of a predetermined skew angle in a positive or negative direction to the inputted intermittent rotation, and transmits the total rotation to the lower rotatable die.