| 摘要 |
PURPOSE:To perform a bending work with high accuracy of a plate material without increasing the stiffness of a member by providing an antifriction device on the part where the plate material of bending die abuts. CONSTITUTION:A plate material W is held fixedly between upper die 5 and lower die 7 and bent by bending die 9. A conduit pipe 33 leading a lubricant of antifriction is provided on the part abutting on the plate material W of the bending die 9 thereof and a roller device 43 is further provided on the upper part of the right side of the bending die 9. A bending work with high accuracy is enabled by lubricating the abutting part on the plate material W of the bending die 9 by a lubricant and by forming with the roller device 4. |
