A method of manufacturing a cylindrical straight seam workpiece

Abstract

A method for manufacturing a cylindrical straight seam workpiece, using a resistance welding machine, including a welding wheel, a support table, a cylindrical lower welding electrode, left and right stamping dies and a lower stamping die, the left and right circular arc stamping dies and the lower round Arc stamping dies can be spliced ​​into cylinders with welded gaps. The process steps include: 1) placing the plate on the support table, 2) driving the lower stamping die to push the plate to the lower electrode, and the plate forms the lower half of the cylinder under the extrusion of the lower stamping die and the cylindrical lower electrode arc, 3) drive the left and right stamping dies to move towards each other, and the plate is squeezed by the left and right stamping dies and the cylindrical lower welding electrode to form the upper half arc of the cylinder; 4) drive the welding wheel to press down on the cylinder At the intersection, 5) the welding wheel and the lower electrode are energized, and the welding wheel is driven to move from back to front along the intersection of the cylinder, and the overlapping plates at the intersection of the cylinder are fused, 6) the welding wheel, the left and right circles The arc stamping die and the lower arc stamping die are reset, and the workpiece is taken away.

Description

technical field [0001] The invention relates to a manufacturing method of a mechanical product, and specifically discloses a manufacturing method of a cylindrical straight seam workpiece. Background technique [0002] refer to figure 1 . The manufacturing process of the existing cylindrical straight seam workpiece includes two steps of coiling and welding. The plate rolling process curls the plate P into a cylinder, and a part of the plate is reserved at the intersection of the cylinder to overlap. The welding process adopts a resistance welding machine, and the resistance welding machine includes a flat upper welding electrode 01 and a cylindrical lower welding electrode 02. When welding, first put the cylinder P into the cylindrical lower welding electrode 02, and the operator fixes the cylinder P by hand, so that the overlapping size of the plates at the intersection of the cylinder P meets the requirements; then start the air pressure device, and put the upper electro...

AI Technical Summary

Problems solved by technology

The disadvantages of the existing process are: 1. Since the coiling and welding need to be completed step by step on two machines, there are many processes and time-consuming workpiece transfer, resulting in low production efficiency; 2. Due to the flat surface of the overlapping plates at the intersection of the cylinders 3. Due to the overlapping size of the plates at the junction of the cylinders, the positioning accuracy is low

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