关键词: 坐标变换；激光切割；钣金；工业机器人

Abstract: In three-dimensional five axis laser cutting of sheet metal parts, it is necessary to establish a machining coordinate system. Some sheet metal parts have complex features, and when the laser head returns to zero, the sheet metal part interferes with the laser head, making it difficult to establish a machining coordinate system. This article collects the coordinates of feature points corresponding to a certain angle of rotation of the laser head, and uses coordinate transformation to indirectly calculate the coordinate values corresponding to the laser head returning to zero, solving the problem of interference between the laser head and the workpiece and providing a new method for establishing the laser cutting coordinate system.

Key words: coordinate transformation; laser cutting; sheet meta; industrial robot