Design of Saddle-Type Seam Welding Gun Posture Adaptive Actuating Mechanism

Abstract

The two pipes are connected orthogonally to form a saddle-shaped intersecting line. The welding device uses a double-cam compound motion mechanism to achieve automatic welding of saddle-shaped curved seams. The small cam is used to control the up and down movement of the welding torch to track the seam trajectory, and the large cam is used to control the welding torch head and the welding point. A reasonable welding angle is maintained by the normal plane. For the cams of the key components of the above device, this article uses a three-dimensional CAD modeling design of the tube and tube orthogonal to obtain a saddle-shaped intersection line, obtain a certain number of discrete point coordinates on this space curve, and inversely obtain its contour by applying the principle of inversion.