Welding-line selecting method
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorMasatoshi Hida
Life of this patent
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Abstract
A welding line can be rapidly extracted using three-dimensional CAD data constituted of a large number of line sections containing welding line candidates. The method of choosing a welding line includes: a step (S110) of specifying one face (first face constituting a reference face) from two faces of a member where a welding line is to be formed; a step (S120) of specifying the other face (second face constituting a groove face) from the two faces of the number where a welding line is to be formed; a step. (S130) of extracting an edge line; a step (S140) of selecting an edge line zone where welding is possible; a step (S150) of creating welding line information by unifying edge lines where welding is possible; and a step (S160) of correcting welding line information in accordance with the groove shape.
Claims2
A welding-line selecting method of automatically selecting a welding line for a welding robot performing welding on the basis of a workpiece figure in three-dimensional CAD data displayed on a display screen, the method comprising:
- a first-face-group selecting step of selecting at least one first face among two faces constituting the work figure on which a welding groove is formed and assigning the selected first face to a first face group;
- a second-face-group selecting step of selecting at least one second face among two faces on which a welding groove is formed and assigning the selected second face to a second face group;
- an edge-line extracting step of extracting all edge lines having vertices having distances to the corresponding faces in the first face group among the edge lines of the faces selected from the second face group in the second-face-group selecting step is smaller than or equal to a predetermined value;
- a weldable-edge-line extracting step of selecting edge lines existing in a region weldable by the welding robot among the edge lines extracted in the edge-line extracting step on the basis of the directions of the normal vectors of the faces in the first face group and the faces in the second face group;
- a weldable-edge-line adding step of calculating an intersection of an edge line crossing the border of faces among the edge lines selected in the weldable-edge-line extracting step, and further selecting a weldable edge line on the basis of information about the intersection;
- and
- an integrating step of integrating the edge lines selected in the weldable-edge-line extracting step and the weldable-edge-line adding step into a continuous welding line.
Dependencies are inferred from the claim text.