| 潘义峰1， 张周强1，2*， 昝杰1.精密织针针舌冲压模具曲面的设计与有限元分析[J].轻工机械,2024,42(1):7-12 |
| 精密织针针舌冲压模具曲面的设计与有限元分析 |
| Design and Finite Element Analysis of Surface of Stamping Die for Precision Needle Latch |
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| DOI：10.3969/j.issn.1005 2895.2024.01.002 |
| 中文关键词: 纺织技术 织针舌勺 曲面拟合 冲压模具 ABAQUS软件 |
| 英文关键词:textile technology knitting needle latch spoon surface fitting stamping die ABAQUS |
| 基金项目:国家自然科学基金青年项目(61701384)；陕西省教育厅重点科学研究计划项目（20JS051）；陕西省自然科学基础研究计划项目（2023JCYB288）；西安工程大学柯桥纺织产业创新研究院项目（19KQYB03）。 |
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| 中文摘要: |
| 为解决手工打磨的针舌冲压模具质量参差不齐导致不同批次的织针质量不一致的问题，课题组选取舌勺曲面加工质量高的织针进行了研究。通过CT扫描获取舌勺的三维点云数据，然后对特征曲面的三维点云坐标数据进行多项式曲面拟合；然后根据特征曲面的方程设计织针舌勺冲压模具，并运用ABAQUS软件对模具进行显式动力学有限元分析。结果表明：特征曲面拟合决定系数R2为0.994，拟合精度符合拟合要求；应力均匀分布在冲压模具的接触曲面上，其最大应力值约为750 MPa，静强度和疲劳分析结果满足使用要求。该研究为国内织针舌勺冲压模具的自动化加工提供了一定的参考依据。 |
| 英文摘要: |
| In order to solve the problem of uneven quality of hand polished latch stamping dies resulting in inconsistent quality of different batches of knitting needles, the study was carried out by selecting knitting needles with high machining quality of latch spoon surface processing. The three dimensional point cloud data of latch spoon surface was obtained through CT scanning, and the polynomial surface fitting was carried out to the three dimensional coordinate data of the characteristic surface. Then, according to the equation of characteristic surface, the stamping die of the latch spoon was designed, and the explicit dynamic finite element analysis of the die was carried out by ABAQUS software. The results show that when the fitting coefficient(R2) of the characteristic surface is 0.994, the fitting accuracy meets the fitting requirements. The stress is evenly distributed on the contact surface of the stamping die, and the maximum stress value is about 750 MPa, and the static strength and fatigue analysis results meet the application requirements. The research provides a certain reference for domestic automatic processing of the stamping die of the needle latch spoon. |
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