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  • 2018-11-22 13:39发布了问答

    砂轮如何检验
    砂轮如何检验
    316人看过
  • 2018-11-19 00:06发布了问答

    建国以前有没有什么大型的扫黑运动?
     
    243人看过
  • 2018-07-24 04:22发布了问答

    家有家规,校有校规,动物园里有什么规?
     
    413人看过
  • 2017-11-15 04:38发布了问答

    伊诺娃夹具是不是东为精工的比较好
     
    399人看过
  • 2017-07-14 05:39发布了问答

    砂轮打火机怎么打着火
    砂轮打火机怎么打着火山里来的没用过
    1412人看过
  • 2015-11-21 00:21发布了问答

    液压平推夹具和楔型夹具有什么区别,哪种夹具更好?
     
    288人看过
  • 2015-10-06 07:19发布了问答

    你好,mmm我领导人的领导人可以是我妈妈吗
     
    269人看过
  • 2015-10-03 06:33发布了问答

    砂轮的组织号用英文如何表达?
    砂轮的粒度、组织号、磨粒的百分密度分别用英文怎么翻译?感谢~~
    361人看过
  • 2015-01-02 07:33发布了问答

    磨床砂轮修整器角度30度下方要垫多少㎜,详细计算公式怎么算的,谢谢
     
    4122人看过
  • 2012-11-17 06:08发布了问答

    立式数控铣床都有哪些夹具?
     
    471人看过
  • 2009-05-07 02:47发布了问答

    急求英文高手翻译一段摘要 有关夹具设计的
    Abstract In this paper, the general situation of research on agile fixture design is summarized and the achievements and deficiencies in the field of case-based fixture design are pointed out. There are no correlative case bases and match... Abstract In this paper, the general situation of research on agile fixture design is summarized and the achievements and deficiencies in the field of case-based fixture design are pointed out. There are no correlative case bases and matching mechanisms during the period from establishing the fixture planning to designing the fixture in currently used case-based fixture design systems. Thus a great amount of experience of fixture design is wasted and cannot be re-used, which reduces design efficiency and violates the original intention of case-based reasoning methods. In order to realize agility of fixture design, including re-configurability, re-scalability and re-usability, in this paper, a re-configurable agile fixture element base and an element assembly relation base are established. Using these two bases, the fixture structure is function-based decomposed, which makes it easy for an agile fixture to be re-configured and modified. Furthermore, a whole case-based agile fixture design model is presented, in which three modules are introduced, including the evaluation of the similarity of fixture planning, conflict arbitration and the modification of an agile fixture case. The three modules can be used to solve a problem where experience and design results cannot be re-used in the process of fixture design. Against the agile fixture design model, the evaluation method is put forward to evaluate the similarity in various phases. However, a similar case in the base could not generally meet the actual requirement and resolve the conflict between the similar case and the actual condition. Thus three methods, including a local restriction-relaxed method, a function-based conflict arbitration method and a case-based conflict arbitration method, are presented to clear up the conflict and could be used to modify the case to obtain an approach to a design result. Finally, an agile fixture design example is presented. The result demonstrates that the case-based agile fixture design approach can improve re-usability and design efficiency. Keywords: Agile fixture design; Case-based reasoning; Modeling 展开
    402人看过