Patent ID: 9199291
Filing Date: 2015-12-01
Classification: B21C,B23K,G01N

Abstract:
1. An operation management device for high-frequency resistance welding and induction welding, which performs an operation management for high-frequency resistance welding or induction welding in which a strip-shaped metal plate is formed to have a cylindrical shape in such a manner that both end portions of the metal plate gradually face each other while the metal plate is conveyed, and a Vee convergence section that is a portion at which both of the end portions butt against each other while facing each other is welded, the device comprising: a measuring unit that measures a distance L [mm] between a first Vee convergence point at which both of the end portions of the metal plate geometrically come into contact with each other and a second Vee convergence point that is a contact point of both of the end portions of the metal plate, and a Vee convergence angle θ[°] at the first Vee convergence point based on an image of an area including the Vee convergence section, wherein the measuring unit includes: a determining unit that determines whether or not the distance L [mm] and the Vee convergence angle θ[°] measured by the measuring unit satisfy the following equation (1): L θ