| 刘淑梅，刘雅辉，李霞，于秋华.曲轴无飞边精密成形模具系统开发[J].轻工机械,2015,33(4): |
| 曲轴无飞边精密成形模具系统开发 |
| Development of Flashless Precision Forming Tool System for Crankshaft |
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| DOI：I0. 3969/j . issn. 1005 -2895. 2015. 04. 004 |
| 中文关键词: 锻造模具系统 单缸曲轴 无飞边 多向锻造 近净成形 数值模拟 |
| 英文关键词:system of forging die single-cylinder crankshaft flashless multi-directional forging near-net-shape numerical simulation |
| 基金项目:国家自然科学基金资助项目( 51301105)；上海市内涵科研建设项目(nhky-2013-05) |
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| 中文摘要: |
| 为了解决曲轴模锻材料利用率低和能耗高的问题，基于有限元数值模拟技术，研究了热锻曲轴的无飞边精密成
形工艺及模具系统。由于曲轴的几何结构单元主要为单缸曲轴，故首先给出了单缸曲轴的热锻工序，包括板式楔横轧、
多向锻造和精锻。利用DEFORM 3D软件对曲轴的无飞边锻造过程进行全程数值模拟，结果表明：楔横轧工序中工件两
端易突起，多向锻造中连杆颈圆角容易折叠，精锻中主轴颈圆角处容易折叠；楔横轧工序最大载荷为250 kN，多向锻造X
向最大载荷为450 kN，精锻最大载荷为5 450 kN。最后将该技术推广到两缸曲轴和多缸曲轴，同样得到了良好的无飞边
结果。 |
| 英文摘要: |
| Flashless precision forming process and mould systems of a hot forging crankshaft was studied based on finite
element numerical simulation technique in order to solve the problem of low material utilization rate and high energy
consumption in the drop forging of crankshaft. As the main geometric unit of crankshaft is single-cylinder crankshaft, the
forging process of a single-cylinder crankshaft was given firstly, including plate-type cross wedge rolling, multi-
directional forging and precision forging. Forging process of crankshaft without flash was simulated via DEFORM 3D
software, the results show that : apophysis occurs easily at ends of work piece in cross wedge rolling process, and fold
defect appears at the fillet of journal in multi-directional forging and at the fillet of bearing in precious forging; cross
wedge rolling process executes with maximum load of 250 kN, multi-directional forging with X directional maximum load
of 450 kN, and precious forging with maximum load of 5 450 kN. Finally, promoting technology to two-cylinder and
multi-cylinder crankshaft also obtains a good result without flash. |
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