| 刘欣玮，张晓龙，杨垠耘，张晓毅，寸花英，严江云，崔岗卫，袁胜万.加工中心工作台结构优化及可靠性研究[J].轻工机械,2017,35(1):86-90 |
| 加工中心工作台结构优化及可靠性研究 |
| Structural Optimization and Reliability Analysis of Machining Center Worktable |
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| DOI：10.3969/j.issn.1005-2895.2017.01.020 |
| 中文关键词: 加工中心 灵敏度分析 有限元法 six sigma分析系统 |
| 英文关键词:Machining Center sensitivity analysis FEM( Finite Element Method) six sigma analysis system |
| 基金项目:云南省战略性新兴产业专项（2012ZX04012-031） |
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| 中文摘要: |
| 针对目前加工中心工作台在工作时，由于振动和变形产生刚度降低的问题，提出了一种结构优化方案，以验证优化后工作台刚度的可靠性。采用有限元法，在静力学分析的基础上对工作台进行了不增加质量而提高刚度的优化；采用灵敏度分析法对优化后工作台的刚度可靠性进行分析；在six sigma分析系统中验证了优化后工作台的刚度可靠度。分析结果表明：优化后工作台的刚度提高11. 5%，且可靠度达到100%，其中弹性模量及工作台圆形筋板厚度的随机变化对工作台刚度影响较大。该方案能提高加工中心工作台的刚度并且能确保其刚度可靠性。 |
| 英文摘要: |
| Aiming at stiffness degradation due to vibration and deformation when the machining center worktable is working, a structural optimization scheme was proposed. The reliability of the optimized worktable stiffness was verified.Using finite element method, the optimization that improved the stiffness of worktable was studied without the mass increment based on static analysis. Using sensitivity analysis method , the reliability analysis of optimized worktable was studied. The stiffness reliability of the optimized worktable in the six sigma analysis system was verified. The results showed that. the stiffness of worktable increased by 11. 5% after optimization and the reliability could achieve 100% .The elastic modulus and the circular steel plate thickness of the worktable had a great influence on the worktable stiffness. This scheme could improve the stiffness of machining center worktable and could ensure its stiffness reliability. |
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