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为初步阐明劈挤成形的一些基本规律,借助数值模拟和物理模拟方法,研究了劈分角为60°、劈刃倾角为30°的尖头劈楔,劈挤宽度为10mm、槽深范围为5～15mm的矩形槽变形过程。结果表明:槽深较小时,其变化对塌角量影响较小;槽深较大时,随着槽深增加,塌角量增加较多。起始段长度及槽口隆起最大高度均与槽深增大基本呈线性关系。槽深较小时,随着槽深增大,槽口隆起影响宽度增大较多;槽深较大时,槽深增大,槽口隆起影响宽度增大量逐步减小。槽深的改变,对槽底深度方向的影响也会增加。
In order to clarify some basic rules of the wedge extrusion, numerical simulation and physical simulation methods were used to study the wedge splitting wedge with a split angle of 60 ° and a wedge angle of 30 °. The width of the wedge was 10mm, 5 ~ 15mm rectangular groove deformation process. The results show that: when the groove depth is small, the change has a little effect on the amount of collapse; when the groove depth is larger, the amount of collapse increases more as the groove depth increases. The length of the initial section and the maximum height of the notch uplift are basically linear with the groove depth. When the groove depth is small, as the groove depth increases, the influence of the groove uplift width increases more. When the groove depth is larger, the groove depth increases, and the groove width increases gradually due to the influence of the groove uplift. Groove depth changes, the depth direction of the groove bottom will increase.