Arc welding apparatus, arc welding system, and arc welding method
AssigneeKabushiki Kaisha Yaskawa Denki
InventorsMasafumi Murakami, Taichi Sakamoto
Life of this patent
Estimating the term…
Abstract
An arc welding apparatus includes: a welding-condition acquirer configured to acquire a welding condition; a heat-input calculator configured to calculate a required heat input corresponding to the welding condition; a frequency setter configured to set a smaller frequency for a short circuit condition and an arc condition corresponding to an increase in the required heat input; and a driver configured to repeatedly perform a process at the frequency, the process including advancing and retreating a welding consumable with respect to a workpiece to generate the short circuit condition and the arc condition.
Claims10
An arc welding apparatus comprising:
- a feeding mechanism configured to forward feed and reverse feed a welding consumable with respect to a workpiece;
- a user interface configured to accept an input of a welding condition including at least one of a desired bead width or a desired penetration depth;
- a welding computer configured to:
- acquire the welding condition from the user interface;
- and
- control the feeding mechanism to repeatedly advance and retreat the welding consumable with respect to the workpiece to generate a short circuit condition and an arc condition, each advance and retreat of the welding consumable forming a cycle, wherein
- the welding computer is configured to increase a duration of the cycle based on an increase in the desired bead width and/or the desired penetration depth.
An arc welding apparatus comprising:
- a feeding mechanism configured to forward feed and reverse feed a welding consumable with respect to a workpiece;
- a user interface configured to accept an input of a welding condition including at least one of a desired bead width or a desired penetration depth;
- a welding computer configured to:
- acquire the welding condition from the user interface;
- and
- control the feeding mechanism to repeatedly advance and retreat the welding consumable with respect to the workpiece to generate a short circuit condition and an arc condition, each advance and retreat of the welding consumable forming a cycle, wherein
- the welding computer is configured to set an advancing speed and a retreating speed of the welding consumable such that a ratio of a magnitude of the retreating speed to a magnitude of the advancing speed increases as a duration of the cycle increases,
- the welding computer is configured to control the driver to advance the welding consumable with respect to the workpiece at the advancing speed and retreat the welding consumable with respect to the workpiece at the retreating speed, and
- the welding computer is configured to increase the duration of the cycle based on an increase in the desired bead width and/or the desired penetration depth thereby increasing the magnitude of the retreating speed relative to the magnitude of the advancing speed.
An arc welding method performed by an arc welding apparatus, comprising:
- acquiring a welding condition via a user interface configured to accept an input of the welding condition including at least one of a desired bead width or a desired penetration depth;
- setting a duration of a cycle formed by a short circuit condition and an arc condition;
- increasing the duration of the cycle based on an increase in the desired bead width and/or the desired penetration depth;
- and
- repeatedly advancing and retreating a welding consumable with respect to a workpiece to generate the short circuit condition and the arc condition at the set duration of the cycle.
Dependencies are inferred from the claim text.