考虑质量损失模型的多响应柔顺机构容差设计

发布时间：2018-01-20 10:02

本文关键词： 质量损失柔顺机构多响应问题容差设计熵权理论　出处：《机械设计与制造》2016年11期 　论文类型：期刊论文

【摘要】：针对多响应柔顺机构设计中既要保证机构性能的精度又要降低其制造成本的问题,以3自由度的柔顺并联细胞注射微动平台为研究对象,提出一种考虑质量损失模型的多响应容差设计方法来对具有复杂多响应问题的柔顺机构进行容差设计。该方法通过建立复杂产品的质量损失模型来表征复杂多响应柔顺机构的质量损失并引入田口方法的思想对其进行容差设计,利用熵权理论确定柔顺机构各方向柔度的重要程度和方差分析方法确定各设计变量波动对柔顺机构各方向柔度稳健性的重要程度,在已确定各设计参数最佳组合的前提下,通过综合考虑复杂多响应柔顺机构的质量水平和制造成本来确定各个设计参数的容差,从而完成对具有复杂质量结构的多响应柔顺机构的容差设计,为多响应柔顺机构的容差设计提供一种新的设计思路。
[Abstract]:Aiming at the problem that the precision of mechanism performance should be guaranteed and the manufacturing cost should be reduced in the design of multi-response compliant mechanism, the three-degree-of-freedom parallel cell injection micromotion platform is taken as the research object. A multi-response tolerance design method considering mass loss model is proposed to design the tolerance of a compliant mechanism with complex multi-response problems. The method characterizes complex multi-response by establishing a mass loss model of complex products. The tolerance design should be carried out by introducing the Taguchi method into the quality loss of the compliant mechanism. Using entropy weight theory to determine the importance of compliance mechanism in each direction and variance analysis method to determine the design variables of the flexibility of the flexibility of the stability of each direction of the important degree of importance. On the premise of determining the best combination of design parameters, the tolerance of each design parameter is determined by considering the quality level and manufacturing cost of complex multi-response compliant mechanism. Thus, the tolerance design of multi-response compliant mechanism with complex mass structure is completed, which provides a new design idea for the tolerance design of multi-response compliant mechanism.
【作者单位】：江西理工大学机电工程学院;
【基金】：国家自然科学基金(51365015) 省教育厅(GJJ13416) 省科技厅科技项目资助(20142BBE50058)
【分类号】：TH112
【正文快照】： 1引言柔顺机构是一种免装配的新型机构被广泛应用于各种高尖端的领域[1-2],如航空航天领域和生物工程领域等,其主要是通过机构自身中柔性铰链的微小弹性形变来实现力的转换和传递,起到了代替传统机构运动关节的功能。柔性铰链作为实现柔顺机构功能的重要组成部件,因其具有无机

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