HOT THREE-DIMENSIONAL BENDING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a hot three-dimensional bending device which can suppress lowering of a dimensional accuracy of a bent component due to uneven heating with a simple device configuration.SOLUTION: A 3DQ device 10 is equipped with: a feeding mechanism 4 for feeding a square tube 2 in a longitudinal direction; a support mechanism 3 for positioning the square tube 2; a high frequency induction heating coil 5 for heating the square tube 2; a busbar 6-1 which so supports the high frequency induction heating coil 5 as to be suspended and supplies an electric power to the high frequency induction heating coil; a water-cooling apparatus 7 which injects cooling water onto an outer periphery of the square tube 2. The busbar 6-1 has a substantially L-shaped outer shape comprising a first portion 12 which is extended in a substantially vertical direction, and a second portion 13 which is connected to the first portion 12 and is extended in a substantially horizontal direction.SELECTED DRAWING: Figure 3