李凝,王子孝,杨克己,等.非对称楔横轧成形轴类件成形过程仿真分析[J].精密成形工程,2014,6(3):25-30.
LI Ning,WANG Zi-xiao,YANG Ke-ji,et al.Simulation Analysis on Forming Process of Shaft Parts by Asymmetric Cross Wedge Rolling[J].Journal of Netshape Forming Engineering,2014,6(3):25-30. |
| 非对称楔横轧成形轴类件成形过程仿真分析 |
| Simulation Analysis on Forming Process of Shaft Parts by Asymmetric Cross Wedge Rolling |
| 投稿时间：2014-03-10 修订日期：2014-05-01 |
| DOI：10.3969/j.issn.1674-6457.2014.03.006 |
| 中文关键词: 楔横轧 非对称轧制 单轴件 有限元分析 |
| 英文关键词: cross wedge rolling asymmetric rolling single shaft parts finite element analysis |
| 基金项目:浙江省博士后择优资助项目( BSH1302019) |
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| 中文摘要: |
| 目的 研究非对称楔横轧轧制单轴类件的成形过程。 方法 利用有限元技术仿真分析了非对称楔横轧轧制单轴类件的成形过程,获得了非对称楔横轧成形过程中轴的应力应变状态,以及轧制力与接触面积关系的变化曲线。 结果 仿真分析结果表明,单轴成形过程中,横截面切应变近似呈中心对称分布,由心部沿与水平方向夹角 45 o 的方向呈半拉伸状态,呈椭圆成形特征。 结论轧制楔入段需要较大的轧制力,克服材料塑性变形产生的抗力;展宽和精整段,轧制力和模具与轧件的接触面积呈线性增长趋势。 |
| 英文摘要: |
| Objective To study the forming process of shaft parts by asymmetric cross wedge rolling. Methods The forming process of shaft parts by asymmetric cross wedge rolling was analyzed by the finite element simulation technology. The stress and strain state changes and the relationship of rolling force changes with the contact area in the forming process were obtained in the asymmetrical cross wedge rolling. Results The simulation results showed that the transverse shear strain was basically approximate center symmetric distribution, and in a tensile state from the core with an angle 45o to the horizontal direction, exhibiting elliptical shape characteristics in the uniaxial forming process. Conclusion Larger rolling force was needed to overcome the resistance caused by the shaft plastic deformation in the rolling wedging procedure. In the broadening and finishing procedures, the rolling force showed an increasing trend with the contact area between the die and the workpiece. |
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