Toyota Jidosha Kabushiki Kaisha

Aisin Seiki Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Newfrey Lcc

Aisin Corporation

Keisuke Uchida

Hiroomi Kobayashi

Shingo Iwatani

Takahito Endo

Go Kuramoto

Jun Kamitake

Yoshinori Shibata

Masashi Furukawa

Atsushi Kawakita

Katsunori Suzuki

Hiroaki Kishi

Hirokazu Tsunekawa

Satoshi Yamada

Hiroyuki Fujii

Hiroki Fujimoto

Hideki Teshima

Eiji Akamatsu

Shuhei Ogura

Shotaro Kato

Hisaaki Takao

Masaki Koike

Satoru Ando

Ryota Horie

Masahiro Nishio

Nozomi Tateyama

Yuta Iwamoto

Shuhei Yamaguchi

Naoki Nishikawa

Naoki Yamaguchi

Hideki Tamoto

Ryo Watanabe

Goro Watanabe

Fuminori Ohashi

Masaki Tanzawa

Tomohiro Takenaga

Hironari Mikata

Akinori Eda

Yasuhiro Ishii

Tsunaji Kitayama

Yuto Tanaka

Yasumoto Sato

Hidekatsu Onodera

Tomoharu Harada

Yuya Segawa

Hiroshi Imaizumi

Toshio Narita

Tatsuya Okamoto

Masaki Ohno

Shinji Ihata

Hiroshi Miyajima

A sufficient sealing property of a through hole is ensured. A sealing structure includes a cylindrically-shaped body part inserted into the through hole, formed of a thin plate of a first thickness, one end of the body part being open and another end of the body part being closed, a tapered part connected to the opened one end of the body part and including a diameter gradually expanding outward as a distance from the body part increases, and a first bent part connected to the tapered part, formed of a thin plate thinner than the first thickness, and bent inward so that a protruding part protruding outward elastically abuts against an inner peripheral surface of the through hole.

Sealing structure and method of manufacturing the same

A joining device comprises a die and driving means. A first concave portion is recessed in a substantially cylindrical shape in a driving direction on the die, and a second concave portion is recessed in the driving direction in a central portion on a bottom face of the first concave portion. A portion on an external side of the second concave portion on the bottom face of the first concave portion forms a terrace portion that is shallower than the second concave portion, and a diameter of the foot portion of the self-piercing rivet corresponds to a diameter of the terrace portion. In driving the foot portion of the self-piercing rivet toward the terrace portion of the first concave portion, the foot portion of the self-piercing rivet is spread outward by the terrace portion and a part of the members to be joined runs into the second concave portion.

Joining device, joining method, and joined structure

A method of welding laminated metal foils (LMF) by projecting a laser beam onto LMF sandwiched between an upper metal plate and a lower metal plate from a side of the upper metal plate and laser-welding the LMF to the upper metal plate and the lower metal plate. The method includes: forming a hole in an upper surface of the upper metal plate and forming a chamfered part so that a diameter of the hole expands toward the upper surface before the laser welding; and in the laser welding, projecting the laser beam for heat conduction welding onto the chamfered part of the upper metal plate to form a molten pool; and projecting the laser beam in a circle to agitate the molten pool and grow the molten pool in a laminating direction of the LMF so that the molten pool reaches the lower metal plate.

Method of welding laminated metal foils

Provided is a method of welding laminated metal foils that can prevent blowholes and spatter from being formed. It is a method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates. The method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates includes locally pressing and crimping the laminated metal foils sandwiched between the pair of metal plates at a welding point in a laminating direction, and welding the crimped pair of metal plates and laminated metal foils at the welding point.

A method of determining a quality of a cladding layer according to one aspect of the present invention is a method of determining a quality of a cladding layerformed by irradiating a laser beamwhile a metallic powderis being supplied, the method including: a process of capturing an image of a melt pooland an area around thereof while the cladding layeris being formed; a process of measuring the sizes and the number of ball-shaped metallic powder aggregates absorbed in the melt poolfrom the image that has been captured; and a process of determining the quality of the cladding layerbased on the sizes and the number that have been measured.

Method of determining quality of cladding layer and laser build-up apparatus

A double side welding method used for producing a differential gear for welding a weld part to join a ring gear fitted on a gear case from both sides. The method uses welding distortion caused by welding to improve product accuracy. The method includes welding from both sides of a weld part where a first member and a second member, which are the objects being joined, face each other. The method is performed by first welding, which is performed from one side, and second welding, which is performed from the other opposite side from that first welding. Heat quantity adjustment, that adjusts the quantity of heat input to the weld part for the second welding, is performed after the first welding, and is carried out such that an amount of welding distortion that is the objective arises.

Double sided welding method

A butt position detecting method for a weld joint, when an arrangement direction of a first member and a second member is defined as a first direction, and a direction that is perpendicular to the first direction is defined as a second direction, the first member has a corner portion and a chamfer portion, and a two-dimensional displacement sensor is arranged at a position offset from the butt portion toward the first member side in the first direction, and such that an angle &#x3b8;s at which the second direction and an optical axis direction of irradiation light of the two-dimensional displacement sensor intersect with each other and an angle &#x3b8;a at which the second direction and a formation direction of the chamfer portion of the first member intersect with each other satisfy a condition expression: 0&#xb0;&#x3c;&#x3b8;s&#x3c;&#x3b8;a.

Method for detecting butt position of weld joint, device for detecting butt position of weld joint, and method for manufacturing weld joint

A torsional vibration reduction device provided inside a torque converter includes rolling elements, a plate, and a cover. The plate includes rolling chambers housing the rolling elements. The cover encloses and shields the rolling elements and the plate from a working fluid surrounding the torsional vibration reduction device inside the torque converter. The cover includes first and second covers that are joined together with the plate held between the first and second covers. The first and second covers contact the plate in an axial direction of the torque converter at locations that are, with respect to an axis of the torque converter, on an inner peripheral side and on an outer peripheral side of the rolling chambers. Surfaces of the first and second covers are joined to the plate at least at part of the locations where the first and second covers contact the plate.

Torsional vibration reduction device for torque converter

Provided is a laser welding apparatus that performs welding by irradiating a laser beam onto a welded part, the laser welding apparatus including: a shielding gas supply unit that supplies a shielding gas to the welded part; a gas feed rate controlling unit that controls a flow rate of the shielding gas; a light intensity measurement unit that measures a light intensity of plasma light emitted from the welded part; and a rate-of-change calculation unit that calculates a rate of change of the light intensity measured by the light intensity measurement unit. The gas feed rate controlling unit controls, according to the calculated rate of change of the light intensity, the flow rate of the shielding gas supplied to the welded part.

Laser welding apparatus and laser welding method

A welding portion inspection method includes: irradiating welding laser beam along welding trajectories set in works plural times or irradiating inspection laser beam along scanning trajectories set in a molten pool of the works which is melted by the welding laser beam plural times; receiving return light including reflected light from the molten pool of the work, evaporation luminescence generated due to evaporating of the work and thermal radiation light radiated from the molten pool of the work; extracting short wavelength component containing evaporation luminescence and long wavelength component containing thermal radiation light from the return light and inspecting the welding condition of the welding portion of the work based on a ratio between an intensity of the short wavelength component and an intensity of the long wavelength component.

Welding portion inspection device and inspection method therefore, with extracting portion for extracting evaporation luminescence and thermal radiation

A welding laser beam (L) is radiated along welding loci (C, C) set in workpieces (W, W), or an inspection laser beam (L) is radiated along scanning loci (C, C) set in a molten pool (Y) of the workpieces that are molten by radiation of the welding laser beam, a returned light beam (L) including reflection light from the molten pool, vapor light caused due to melting and evaporation of the workpieces, and thermal radiation light emitted from the molten pool is received, and a welding state of a welded portion of the workpieces is inspected based on an intensity of a returned light beam received in a first region inside the molten pool which is relatively close to a given point and an intensity of a returned light beam received in a second region inside the molten pool which is relatively spaced from the given point.

Welded portion inspection apparatus and inspection method thereof, with inspection in different zones of the molten pool

A welding laser beam (L) is radiated along welding loci (C, C) set in workpieces (W, W), or an inspection laser beam (L) is radiated along scanning loci (C, C) set in a molten pool (Y) of the workpieces (W, W) that are molten by radiation of the welding laser beam (L), a returned light beam (L) including reflection light from the molten pool (Y) of the workpieces, vapor light caused due to melting and evaporation of the workpieces, and thermal radiation light emitted from the molten pool (Y) of the workpieces is received, and a welding state of a welded portion of the workpieces is inspected based on an intensity change of the returned light beam (L) thus received.

Welded portion inspection apparatus and inspection method thereof

A welded structure has a first member and a second member that are welded together. The first member comprises a second-member joining part, and the second member comprises a first-member joining part. If the direction in which the first member and the second member are arranged is the first direction, and the direction intersecting the first direction is the second direction, welded parts are provided at least at both ends in the second direction of the joining surface where the first member and the second member are joined. The first member is such that the second-member joining part and a linking part which connects to the second-member joining part are arranged in succession from the joining surface in the first direction, and the dimensions of the second-member joining part are greater than the dimensions of the linking part in a third direction perpendicular to the first direction.

Welded structure and welding method

A method for manufacturing a vehicle power transmission device having a case and a ring gear fitted to the outer peripheral surface of the case to transmit drive power from a drive source. The method includes: a welding step in which an annular flange is provided on the case or the ring gear and butt welding is performed by lapping a weld bead along the contact portion of one side surface of the annular flange and the case or the ring gear; a measurement step in which the outline of the other side surface of the annular flange placed in close proximity to the one side surface are measured; and an evaluation step in which a weld condition is evaluated based on part of the outline, which is determined in the measurement step, of a portion corresponding to the lapping portion of the weld bead.

Method and apparatus for manufacturing vehicle power transmission device

Assuming that a direction in which a first member and a second member are arranged is a first direction and a direction orthogonal to the first direction is a second direction, a welding structure includes: a pressure fit portion; a first cavity; a second cavity; a first weld bead formed between the first cavity and an end of a joining part of the first member and the second member on one side in the second direction by welding the first member and second member while the second cavity is communicated with outside; a second weld bead formed between the second cavity and an end of the joining part on the other side in the second direction; and a cutout groove communicating between the first cavity and the second cavity.

Welding structure and method for manufacturing welding structure

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Nagoya, Japan

Keisuke Uchida