According manufacture difficult of small special-shaped punch in die manufacturing,introduced cold-press forming(three-dimensional press),it provided a certain reference for manufacture of similar small special-shaped punchs.
针对模具制造中遇到的微小异形凸模难加工问题,介绍了采用冷压成形工艺——立体压制方法。
The principle, structure and key design points of three-point fixing method to special-shaped small punch are introduced, and compared with traditional fixing methods.
介绍了异形小凸模3点固定法的原理、结构和设计要点。
Based on stress property experimental study of box beam,in which GRC abnormity internal molds are used,ultimate bearing capacity of box beam is determined,the development of crack and deflection is measured under each load step,failure form and characteristic is analyzed,and the results of the experiment are compared with the calculation results according to the present code.
通过对12 m跨GRC异形内模折线形预应力筋箱梁受力性能的试验研究,测定箱梁的最大承载力,分析箱梁在各级荷载下裂缝和挠度的发展情况,及其破坏形态和破坏特点,并将试验结果与按现行规范计算的结果进行对比。
