Three-cylinder crankshaft bending die

The utility model discloses a bending die for a three-cylinder crankshaft. The bending die comprises an upper die (1) and a lower die (3), wherein the upper die (1) is provided with a material distribution boss (2); the lower die (3) is provided with a positioning boss (4) and a concave step (5); and the distribution boss (2) is matched with the concave step (5) in arrangement position. The die is simple in structure and reasonable in design, the problem that a blank cannot be positioned due to a three-cylinder crankshaft three-dimensional die splitting mode can be effectively solved, the material utilization rate is improved, and the production cost is reduced. 本实用新型公开了一种三缸曲轴压弯模具，包括上模（1）和下模（3）；其中：所述的上模（1）设有分料凸台（2）；所述的下模（3）设有定位凸台（4）和凹状台阶（5）；所述的分料凸台（2）和凹状台阶（5）的设置位置相匹配。本实用新型结构简单，设计合理，不仅可以有效解决由于三缸曲轴立体分模方式导致胚料无法定位问题，而且提高了材料利用率，降低生产成本。