Positioning and welding device for metal calendering workpiece machining

The invention relates to the technical field of metal positioning and welding, in particular to a metal calendering workpiece machining positioning and welding device which comprises a platform, a positioning mechanism is mounted at the top of the platform and comprises two first sliding grooves, and the first sliding grooves are formed in the platform; a two-way lead screw is rotationally installed in the first sliding groove in the left portion, a guide rod is fixedly installed in the first sliding groove in the right portion, the sliding plate in the left portion is installed on the surface of the two-way lead screw in a threaded mode, and the sliding plate in the right portion is slidably connected with the guide rod. Through the arrangement of the positioning mechanism, the distance between the two sliding plates can be driven to be changed through the first motor, then a metal part can be subjected to positioning clamping and positioning welding, the accurate position of a welding part can be ensured, t