复杂多弯曲薄壁铜管成形技术研究

摘要

Complex more-bending thin-wall tube is difficult to ensure bended position and shape precision,so it is difficult to adapt to an assemblage part.The forming difficulty in the more-bending thin-wall thin-length copper tube is analyzed,and the scheme of step to step bending formore-bending copper tube by using point to plane and plane to space is presented.The single bending problems are solved by process optimization.The bending forming and precision control tool are designed,that the bending forming problem with high efficiency and quality on morebending thin-wall copper tube is solved.The comparison showed that the scheme of step to step bending was better than the scheme of U-shaped welding forming.%多弯曲薄壁管件各弯曲部位的位置精度、形状精度难于控制,弯曲件难于满足具有装配要求的使用场合.本文分析了多弯曲薄壁细长铜管的成形难点,提出了“由单段到平面,由平面到空间”的多弯曲铜管分步成形方案,开展了弯曲工艺优化,解决了各局部弯曲成形的问题,设计了弯曲成形及精度控制工装,实现了多弯曲薄壁铜管高效、高质量直接弯曲成形.经比较,分步成形方案效率、成本、精度均优于U形焊接成形方案.