针对加工汽车碳纤维材料的钻头寿命短、加工质量差的问题,设计了一种新型钻头。通过DOE(design of experiment)试验方法,给出了钻头齿数、前角和后角等3个参数的全因子试验方案。利用MINITAB软件对试验数据进行回归分析,并利用响应优化...针对加工汽车碳纤维材料的钻头寿命短、加工质量差的问题,设计了一种新型钻头。通过DOE(design of experiment)试验方法,给出了钻头齿数、前角和后角等3个参数的全因子试验方案。利用MINITAB软件对试验数据进行回归分析,并利用响应优化获得最优设计参数。结果表明:齿数和后角对钻孔个数及钻头寿命影响不显著,前角对钻头寿命有显著影响,后角与前角的交互作用对钻头寿命也有显著影响。齿数、前角和后角对第一孔钻孔时间及钻孔速度有显著影响,齿数与后角的交互作用以及前角与后角的交互作用对钻孔速度有显著影响。通过试验测试验证优化后的最佳设计参数是有效合理的。展开更多
In the modern era of manufacturing, it is important to optimize every design parameter in product development stage to reduce cost, material usage and to achieve the desired efficacy level. There are various models wh...In the modern era of manufacturing, it is important to optimize every design parameter in product development stage to reduce cost, material usage and to achieve the desired efficacy level. There are various models which serve those purposes, for instance, Design of Experiment (DoE) is used to check the parameters after adopting optimization tactics which results in reduced cost or saving operating time. In this regard, this research aims to construct a DoE model on a portable workstation to optimize its design parameters. The methodology of DOE would be a 2 level 3 factors full factorial DOE which is conducted to determine the optimal value for three design parameters (factors) which are material density, the length of the table and the length of the table stand in terms of the response which is the required time of fold ability function of the portable workstation. Based upon the evaluated interactions between the parameters, the optimized parameters are chosen for responses. Here, the resultant design parameters are at their lowest level, so the goal of time efficiency in fold ability function is achieved. This similar sort of DoE can be implemented in the furniture and other manufacturing industries who wish to optimize their material usage as well as increase efficiency and reduce cycle time.展开更多
焊接工艺参数直接影响着焊缝成形及接头性能的好坏。由于焊接过程涉及的参数较多,采用传统实验方法研究往往不够现实。将实验设计DOE(Design of Experiment)等优化设计方法应用于焊接工艺研究,通过科学严谨的实验设计,建立相关数学模型...焊接工艺参数直接影响着焊缝成形及接头性能的好坏。由于焊接过程涉及的参数较多,采用传统实验方法研究往往不够现实。将实验设计DOE(Design of Experiment)等优化设计方法应用于焊接工艺研究,通过科学严谨的实验设计,建立相关数学模型,找出焊接工艺参数与焊缝质量参数间的影响关系,实现焊接过程优化设计和焊接主要工艺参数组合预测,从而获得良好的焊缝成形和接头性能,对于焊接试验研究和焊接实际生产过程优化都具有重要意义。着重介绍了国内外DOE方法在焊接过程实验设计和焊缝质量最优化等方面的研究应用和进展。展开更多
文摘针对加工汽车碳纤维材料的钻头寿命短、加工质量差的问题,设计了一种新型钻头。通过DOE(design of experiment)试验方法,给出了钻头齿数、前角和后角等3个参数的全因子试验方案。利用MINITAB软件对试验数据进行回归分析,并利用响应优化获得最优设计参数。结果表明:齿数和后角对钻孔个数及钻头寿命影响不显著,前角对钻头寿命有显著影响,后角与前角的交互作用对钻头寿命也有显著影响。齿数、前角和后角对第一孔钻孔时间及钻孔速度有显著影响,齿数与后角的交互作用以及前角与后角的交互作用对钻孔速度有显著影响。通过试验测试验证优化后的最佳设计参数是有效合理的。
文摘In the modern era of manufacturing, it is important to optimize every design parameter in product development stage to reduce cost, material usage and to achieve the desired efficacy level. There are various models which serve those purposes, for instance, Design of Experiment (DoE) is used to check the parameters after adopting optimization tactics which results in reduced cost or saving operating time. In this regard, this research aims to construct a DoE model on a portable workstation to optimize its design parameters. The methodology of DOE would be a 2 level 3 factors full factorial DOE which is conducted to determine the optimal value for three design parameters (factors) which are material density, the length of the table and the length of the table stand in terms of the response which is the required time of fold ability function of the portable workstation. Based upon the evaluated interactions between the parameters, the optimized parameters are chosen for responses. Here, the resultant design parameters are at their lowest level, so the goal of time efficiency in fold ability function is achieved. This similar sort of DoE can be implemented in the furniture and other manufacturing industries who wish to optimize their material usage as well as increase efficiency and reduce cycle time.
文摘焊接工艺参数直接影响着焊缝成形及接头性能的好坏。由于焊接过程涉及的参数较多,采用传统实验方法研究往往不够现实。将实验设计DOE(Design of Experiment)等优化设计方法应用于焊接工艺研究,通过科学严谨的实验设计,建立相关数学模型,找出焊接工艺参数与焊缝质量参数间的影响关系,实现焊接过程优化设计和焊接主要工艺参数组合预测,从而获得良好的焊缝成形和接头性能,对于焊接试验研究和焊接实际生产过程优化都具有重要意义。着重介绍了国内外DOE方法在焊接过程实验设计和焊缝质量最优化等方面的研究应用和进展。
