Kabushiki Kaisha Yaskawa Denki

Honda Motor Co., Ltd.

Masami Nakakura

Teppei Sonoda

Manabu Okahisa

Yasuhiro Kawai

Yusuke Kinoshita

Noriko Kurimoto

Ryuta Kagawa

Kazuhiko Yamaashi

Haruhiko Kobayashi

Mitsugu Kaneko

Tatsuo Hiro

Kuniaki Katamine

The seam welding apparatus includes a pair of rotating electrodes, an electrode supporting frame, a distance measuring means, and a controller. The electrode supporting frame supports the pair of rotating electrodes. The distance measuring means is provided on the electrode supporting frame and measures a distance to an edge of the steel plate. The controller controls the robot to adjust a running direction of the rotating electrodes so that a deviation comes into zero when a distance actually measured by the distance measuring means deviates from a predetermined distance. Thereby, it is accomplished that the seam welding apparatus is downsized as well as uninfluenced by the surface state and/or shape of workpiece (steel plate).

Seam welding apparatus, seam welding method, robot control device, and robot control method

A seam welding system includes a pair of roller electrodes. The pair of roller electrodes hold a to-be-welded object between circumferential surfaces of the roller electrodes, rotate while holding the to-be-welded object between the circumferential surfaces, and perform seam welding on the to-be-welded object when a current flows between the roller electrodes while rotating and holding the to-be-welded object between the circumferential surfaces. To an electrode movement mechanism, the roller electrodes are mounted. The electrode movement mechanism moves the roller electrodes along a welding line of the to-be-welded object. Drive sources respectively rotate the roller electrodes and a joint of the electrode movement mechanism. A controller controls an amount by which the roller electrodes rotate based on a torque change in the drive sources so as to keep torques respectively acting on the roller electrodes within a predetermined range.

Seam welding system, seam welding method, and method for producing a to-be-welded object with roller electrodes

A machining apparatus includes a robot including a first arm portion, a second arm portion, a tip portion, a second actuator swinging the first arm portion around a second axis, a third actuator swinging the second arm portion around a third axis, a seventh actuator adjusting a distance between the second axis and the third axis, and an end effector provided to a tip portion and applying machining to a workpiece. The robot is positioned such that a movable range of a tip portion of the first arm portion or a base end portion of the second arm portion interferes with the workpiece when the first arm portion is rotated around the second axis, where the distance is made longest, in a state where the robot exactly faces the workpiece.

Machining apparatus and method of producing workpiece

A robot system includes an end effector, a robot arm, and a controller. The end effector includes a pressure roller and a linear motion mechanism. The linear motion mechanism is configured to move the pressure roller with respect to a pressed surface. The robot arm is configured to support the end effector. The controller is configured to control the linear motion mechanism to move the pressure roller to make a pressing force of the pressure roller against the pressed surface approximately uniform.

Robot system and method for producing to-be-processed material

A seam welding robot includes a robot arm and a welding unit that is coupled to the robot arm. The welding unit includes a pair of roller electrodes. The pair of roller electrodes rotates following motion of the robot arm while sandwiching and pressurizing welding targets. The welding unit passes a welding electric current between the pair of roller electrodes to seam-weld the welding targets.

Growing community of inventors

Kitakyushu, Japan

Masami Nakakura