基于虚拟仪器的无摩擦拉深筋力学性能实验系统

本文针对拉深筋对板材后续成形影响的研究尚十分欠缺的现象.研制了无摩擦拉深筋模拟实验装置、开发了基于虚拟仪器软件LabVIEW的实验测试平台.对板材通过拉深筋的过程进行了实验研究,分析了板材经过常规拉深筋和无摩擦拉深筋条件下各力能参数的变化规律,利用无摩擦拉深筋实验装置研究了摩擦阻力在拉深筋中的作用,实验表明摩擦阻力占拉深筋总阻力的比例约为40%左右.同时分析了减薄量与拉深筋结构的关系,为拉深筋的设计和调整提供了理论依据.

Experment System of Mechanical Property for No-Friction Drawbead Based on Virtual Instrusment

At present, the study on its effection on subsequent forming of sheet metal is deficient. Aauthor designed no-friction drawbead experimental device, developed experimental measure system based on Lab- VIEW. The research on the forming process of sheet metal throught drawbead is carried out. The change of mechanical property on normal drawbead and no-friction drawbead experimental device is analysed. Then, the effection of friction restraining force for drawbead is researched with no-friction drawbead fixture. It has been indicated that the friction restraining force is 40% of restraining force. The thickness reduction and the relation between drawbead are researched systematily. This paper give a mass of foundational datas for the design and adjustment of drawbead.