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

A technology of seam welding and welding line, applied in the field of seam welding system, which can solve the problems of complicated and unstable trajectory, etc.

Active Publication Date: 2015-11-11
YASKAWA DENKI KK +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is not possible to perform high-quality seam welding on the welded object sufficiently
[0009] In addition, since the...

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  • Seam welding system, seam welding method, and method for producing a to-be-welded object
  • Seam welding system, seam welding method, and method for producing a to-be-welded object
  • Seam welding system, seam welding method, and method for producing a to-be-welded object

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Embodiment Construction

[0028] Hereinafter, embodiments of the seam welding system, the seam welding method, and the production method of the object to be welded disclosed in the present application will be described in detail with reference to the accompanying drawings. Moreover, this invention is not limited to embodiment shown below.

[0029] In addition, the case where the seam welding system is a robot system provided with a robot arm having a hand-operated device for seam welding (hereinafter referred to as "welding torch") at the distal end will be described as an example.

[0030] A robot arm is an example of an electrode moving mechanism that moves a roller electrode included in a welding torch. Here, the electrode moving mechanism may be replaced with another configuration such as moving the roller electrode by a uniaxial drive mechanism. Therefore, the seam welding system does not necessarily have to be a robot system equipped with a robot arm.

[0031] In addition, below, the object to ...

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Abstract

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.

Description

technical field [0001] The disclosed embodiments relate to a seam welding system, a seam welding method, and a production method of a welded object. Background technique [0002] Conventionally, there is known a seam welding system (for example, refer to Patent Document 1) in which an object to be welded is held by a robot, and seam welding is performed while sending such an object to be welded between a pair of roller electrodes. [0003] Such a seam welding system includes: the aforementioned pair of disc-shaped electrodes; and motors respectively provided on the disc electrodes to rotate the respective disc electrodes. [0004] In addition, in the seam welding system, a robot sends the object to be welded between the pair of roller electrodes, and at the same time, the roller electrodes are rotated by a motor while being pinched and pressurized by the respective peripheral portions of the roller electrodes. Seam welding is performed on the object to be welded by using a ...

Claims

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Application Information

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IPC IPC(8): B23K11/06B23K11/31
CPCB23K11/06B23K11/065B23K11/24B23K11/252B23K11/3036B23K11/315
Inventor 中仓雅美园田哲平
Owner YASKAWA DENKI KK
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