我厂承接一批大型罐体φ10(m)×22(m)的金属结构件,其中型材弯曲有:槽钢220×77×7在腿宽方向内、外弯曲,角钢L70×6的内、外弯曲,技术要求均为4件组合为φ10m的圆。我厂仅有一台三辊滚板机,上辊直径为160mm,两下辊直径为120mm;无型材滚弯机。为此,设计和加工两下型辊装在下辊轴上固定(用螺钉固 I plant to undertake a number of large-scale tank φ10 (m) × 22 (m) of the metal structure, which profiles are: channel 220 × 77 × 7 in the leg width direction, the outer curve, the angle L70 × 6, Outside bending, the technical requirements are 4 combinations of φ10m round. I plant only a three roll roller machine, on the roll diameter of 160mm, two under the roll diameter of 120mm; no profile roll bending machine. To this end, the design and processing of two types of roller mounted on the lower roll shaft (screwed