EXTREMELY SMALL LOT MANUFACTURING METHOD FOR BENT PROFILE PIPE COMPONENT

摘要

PROBLEM TO BE SOLVED: To provide a reasonable manufacturing method premised on using a general-purpose machine tool or a tool and using a general-purpose pipe material as a starting material as much as possible regarding manufacturing of a small-lot bent profile pipe component.SOLUTION: This extremely small lot manufacturing method for a bent profile pipe component 1 is a method for manufacturing only small lots of the bent profile pipe component 1 having a sectional shape change in the midway and a bent part in the midway with one or both of opening shapes/sizes of both ends different is characterized in that a roughly rectified intermediate workpiece is cut to a desired size including each bent part 10 in a material pipe selection step, then in a bending step, then in a hydroform step, and then in a cutting step, then a diameter and a shape are rectified to desired shapes in a finish rectifying step, and a rectified finish workpiece is obtained by eliminating ring welding in all the steps.SELECTED DRAWING: Figure 1