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| 多工位级进模冲裁工序模具磨损行为的数值分析及寿命预测 |
| Numerical Analysis and Life Prediction of Die Wear Behavior in Multi-Position Progressive Die Blanking |
| 投稿时间：2017-04-21 修订日期：2017-05-10 |
| DOI：10.3969/j.issn.1674-6457.2017.03.017 |
| 中文关键词: 多工位级进模 Archard理论 数值分析 模具磨损 模具寿命 |
| 英文关键词: multi-position progressive die archard theory numerical analysis die wearing die life |
| 基金项目:广东省佛山市顺德区产学研合作项目（2014CXY18） |
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| 中文摘要: |
| 目的 针对多工位级进模连续冲裁所带来的模具磨损问题。方法 基于Archard磨损理论，以凸模为研究对象，对其磨损行为进行有限元数值模拟，通过设计冲裁间隙、冲裁速度、模具硬度等工艺参数之间的正交试验，获得各工艺参数对模具磨损的变化规律及最佳工艺组合；采用磨损累计法，对模具修模前的凸模圆角半径和使用寿命进行预测。结果 冲裁模具磨损区域主要分布在模具圆角处，并得到单次最大模具磨损量为4.30×10-7 mm；得到磨钝后的圆角半径为0.3 mm，冲裁极限次数为27万次。结论 采用该分析方法能较好地预测磨损，并为模具的保养修复提供一定的参考价值。 |
| 英文摘要: |
| The paper aims to solve the problem of die wear caused by continuous blanking of multi-position progressive die. Based on the Archard wearing theory, a terrace die was researched to have numerical modeling on finite element of wearing. The variation rule and optimal process combination of influences of process parameters on die wearing were obtained through orthogonal test among design of blanking clearance, blanking speed, and die hardness. Furthermore, the fillet radius and the service life of the punch die before repairing were predicted by the method of wearing accumulation. The wearing area of blanking die was mainly distributed in the fillet corner of the die, and the maximum wearing amount in the single stamping was 4.30×10-7 mm. And the radius of the fillet corner was 0.3 mm after blunting, and the limit time of the blanking was 270 thousand. The method can predict the wear well and provide some reference value for the maintenance of the die. |
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