Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Hiroshi Miwa

Koichi Matsumoto

Yohei Teragaito

Eisaku Hasegawa

Teruaki Kobayashi

Takeshi Nakamura

Hitoshi Yoshimichi

Yoshito Otake

Noriko Kurimoto

Mitsutaka Igaue

Genzo Fuse

Yoshinobu Kawasaki

Yoshiyuki Kinouchi

Takuya Furuno

Hitoshi Sasaki

Masaaki Shoji

Atsushi Osada

Shigemitsu Nakabayashi

Isao Bundo

Hiroki Hashimoto

Katsumi Takeishi

Takuro Kugimiya

Akira Minegishi

Osamu Kurihara

Akiyoshi Shimizu

Shigenori Yoshimi

Kazuya Hirose

Shigetoshi Namiki

Takuya Hino

A welding gun includes a proximity restricting mechanism that is provided between a shaft and a cover member in a manner to surround the shaft and to be displaceable relative to the shaft in an axial direction in accordance with expansion and contraction of the cover member, and that restricts the cover member from approaching too closely the shaft.

Resistance welding apparatus

A welding gun includes: a moving mechanism portion (ball screw mechanism) for moving a movable electrode back and forth; a motor that includes a rotor and drives the moving mechanism portion to move the movable electrode back and forth; and a brake mechanism that prevents rotation of the rotor during a braking operation, wherein the brake mechanism includes an annular brake disc that is attached to an outer peripheral surface of the rotor and rotates integrally with the rotor, and a clamping portion that prevents rotation of the brake disc by clamping the brake disc during the braking operation.

Provided is a seam welding device capable of seam welding various shapes of objects to be welded. A seam welding device which performs seam welding by causing electricity to be conducted between a first electrode wheel and a second electrode wheel comprises a first motor which drives the first electrode wheel, a second motor which drives the second electrode wheel, and a first belt provided between the first electrode wheel and the first motor. If a direction joining the axes of the first electrode wheel and the second electrode wheel is defined as a vertical direction, the direction from the first electrode wheel toward the second electrode wheel is upward, and the direction from the second electrode wheel toward the first electrode wheel is downward, then the first motor is disposed further upward than a point of contact of the first electrode wheel and the second electrode wheel.

Seam welding device

In the present invention, while a welding current is applied with respect to a laminate body comprising thick metal plates and thin metal plates, a first welding pressure (F) with respect to the laminate body from an upper tip contacting the metal plate and a second welding pressure (F) with respect to the laminate body from a lower tip contacting the metal plate are changed relative to each other. Specifically, F&#x3c;Fin a first step which is an initial period of welding, F=Fin a second step which is an intermediate period of welding, and F&#x3e;Fin a third step which is a final period of welding.

Spot welding method and device

To provide a welding gun capable of improving the durability by effectively bearing the load in the thrust direction, and capable of providing a heavyweight and large-sized movable gun arm, even in a small-sized main body unit. A welding gunof a guide groove type is provided with a thrust direction guide mechanism including: two guide pinsandprovided to an arm holderin an integrated manner by penetrating first and second guide groovesand; bracketsandbeing fixedly provided to the end portions of the guide pinsand, and having a length sufficient to traverse the first and second guide groovesandin a direction orthogonal to the axis line of the guide pinsand; and thrust bearing membersandbeing provided to the end portions of the bracketsand, abutting on a side plateof a gun body, so as to be movable along the first and second guide groovesand

Welding gun

A welding gun equipped with a retaining unit, which includes a first retaining member and a second retaining member, and retains a stationary gun arm and a movable gun arm. A retaining hole for retaining the stationary gun arm, guide grooves for insertion of rolling members provided on an arm holder that retains the movable gun arm, connecting member insertion holes into which connecting members connecting the first retaining member and the second retaining member are inserted, and a retained member insertion hole for inserting a retained member retained by a moving member that moves the retaining unit to a welding operation location, are formed in the first retaining member and the second retaining member, and the regions where these components are formed are set as thick-walled regions having a greater thickness than other regions. Thus, adequate rigidity is ensured while avoiding an increase in weight.

A protective cover used in a guide groove-type welding gun is provided with: a cover body into which a movable gun arm is inserted, said cover body being of a flame-retardant fabric, covering at least a gun body, having an open-ended tubular shape, and being capable of following changes in shape; the first strings that can allow the mobile gun arm to project and maintain the upper end opening in a narrow-mouthed state; and the second string that can allow the fixed gun arm to project and maintain the lower end opening in a narrow-mouthed state. Thus, sputter depositions and the like that occur during welding are reliably prevented from penetrating the gun body, further improving the durability of the welding gun.

Protective cover for welding gun

A hemming device wherein a processing tool is equipped with a base part moved by a robot, a processing unit having a hemming roller and a guide roller, and a floating mechanism that is attached to the base part and elastically supports the processing unit with six degrees of freedom.

Processing tool and hemming device

A roller hemming device includes a large diameter roller having a large tapered surface and a small diameter roller having a small cylindrical surface. The small diameter roller is coaxially disposed with the large diameter roller. The small diameter roller and the large diameter roller enable to relatively move in an axial direction. The outer diameter of the small cylindrical surface is smaller than the minimum outer diameter of the large tapered surface.

Roller hemming device and roller hemming method

A flange sectionprotruding in a radial direction of a ball screw shaftis formed at a lower end portion of the ball screw shaft, and a protrusion stopperwhich abuts on the flange sectionto prevent the ball screw shaftfrom protruding out of the rodis formed in a hollow section of the rod. On the lower side of the hollow section of the rod, there is formed a retraction stopperwhich abuts on a lower end portionof the ball screw shaftto limit the retraction of the rod

A moving die is held by a robot and made to approach a vehicle, and a positioning pin is inserted into a positioning hole of the vehicle. The moving die is brought into a floating state of being displaceable relative to the vehicle by reducing a force of the robot for maintaining an attitude thereof. In a state of holding the moving die by the robot, a surface of the moving die is brought into contact with the vehicle by an adsorbing mechanism including an adsorbing portion of an elastic member provided to the moving die. The moving die and the robot are cut to be separated.

Hemming working method and working apparatus

An electric spot welding gun () includes: a servo motor (); a push rod () that advances and retracts in response to rotation of a rotor () of the servo motor; a drive-side electrode tip () that is mounted to a drive-side arm () fixed to a leading end of the push rod; and an encoder () that detects the rotation angle of the rotor of the servo motor, the position of the electrode tip being offset relative to the push rod, in which the rotor and the encoder are disposed in parallel to each other in an offset plane on which the electrode tip is offset relative to the push rod, at an attitude in which a trailing end () of the rotor on a side opposite to a push rod side thereof and an input end () of the encoder are facing in the same direction.

Electric spot welding gun

A welding gun is provided that can achieve both a size reduction and increase in pressure using a servo motor. The welding gun () includes an arm holder () having guide pins (and) that are moveable along guide tracks () formed in a gun bracket (), and a mobile gun arm () is mounted to this arm holder. Roller followers (and) engaging with the guide tracks around the guide pins are provided, and the mobile gun arm is made to open or close via the arm holder using a servo motor ().

In an encoder dampening mechanism for an electric spot welding gun equipped with a motor that is accommodated inside of a motor housing and causes a hollow rotor to rotate, and an encoder main body that detects a rotation angle of the hollow rotor, the encoder dampening mechanism includes: a thin plate that is formed with a top surface that is larger in a surface area than a base surface of the encoder main body, and on which the base surface of the encoder main body is installed within the top surface; and a thin plate mounting portion that connects the thin plate to the motor housing via the thin plate support part and the thin plate pressure part, which dampen vibration.

Encoder dampening mechanism

A welding gun precludes moisture from penetrating inside of a motor housing due by preventing development of negative pressure inside the motor housing. The welding gun includes a feed screw mechanism that is coupled to a servo motor and has a hollow rod that reciprocally moves in a predetermined direction by way of torque applied by the servo motor, and a moveable electrode tip that is connected to a leading end portion of the hollow rod and opens and closes relative to a fixed electrode tip according to the reciprocal movement of the hollow rod. The servo motor has a motor housing in which a motor housing hollow part accommodating a portion of the hollow rod to be reciprocally moveable is formed. A vent that ventilates the motor housing hollow part with ambient air is formed in the motor housing.

Growing community of inventors

Tochigi, Japan

Hiroshi Miwa