POSITIONING METHOD FOR SQUARE TUBE WELDING SURFACE IN WELDING MEMBER TO SQUARE TUBE AND POSITIONING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a positioning method for a square tube welding surface capable of executing suitable welding work in the case of welding a member to the square tube and the positioning device capable of executing the method. ;SOLUTION: A horizontally placed square tube 15 is rotatably supported at both end sides, at least one side of supporting shaft 21 is connected with a rotation driving device 30 via a clutch 40, the square tube 15 is rotated 90 degrees around the axial center with the rotation driving device 30, thereafter the rotating attitude is slightly regulated and positioned so that the pressing surface becomes parallel to the transferring direction of a welding torch T by releasing in the required time of driving/connecting to the supporting shaft 21 with the clutch device 40 and pressing to the upper surface 18 or back surface of the square tube 15 surface with the pressing member provided with the reference part parallel to the transferring direction of the welding torch T, and then automatic welding is executed.;COPYRIGHT: (C)1998,JPO