鋁管液壓沖邊成形及螺帽鑲嵌結合之沖頭設計

Punch Design for Hydro-Flanging and Nut-Inlay Joining of Aluminum Tubes

黃永茂(Yeong-Maw Hwang) ； 范鴻仁(Hong Nhan Pham) ； 何則緯(Ze-Wei Ho)

《鍛造》 31卷3期 (2022/12) Pp. 14-21

摘要

管件與外部的連接可透過液壓沖孔、擴孔和螺帽鑲埋來達到，而液壓沖邊是整個液壓結合成形的預成形。本研究使用有限元素軟體DEFORM 3D來分析鋁合金6063管的圓孔擴孔過程管材的彈塑性變形行為及螺帽鑲嵌後空孔對螺帽的鑲嵌力。本研究採用了20、30、40、50和60 MPa內部壓力進行鼓脹支撐以取代傳統剛性模具，並使用了六種不同的螺帽半徑增量進行鑲埋，探討如何使液壓油不會由螺帽頭表面洩漏的螺帽頭尺寸設計及液壓大小控制。另外亦探討了不同螺帽頭形狀及內部壓力對螺帽鑲嵌力的影響。

並列摘要

The connection between a tube and the external parts can be achieved through hydro-piercing, hole flanging and nut laying, where hydro-flanging is the preforming of the whole hydro-joining process. In this study, finite element software DEFORM 3D was used to analyze the elastoplastic deformation behavior of the aluminum alloy 6063 tube during the reaming process of a circular hole and the inlaying force of the hollow hole on the nut after the nut is inlaid. Hydraulic oil support was carried out with internal pressures of 20, 30, 40, 50 and 60 MPa to replace the traditional rigid die and six different nut radius increments were used for embedding, to discuss how to prevent the hydraulic oil from leaking from the nut head surface, the nut head size design and hydraulic size control. In addition, the influence of different nut head shapes and internal pressures on the inlaying force of the nut is also investigated.