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黄健宇 《机械工业标准化与质量》1999,(12):28-31
随着新产品的功能不断完善,各功能要素之间的组合日益显得重要,在产品各功能要素之间的接口及接口继承性方面越来越受到用户和消费者的关注。本文主要从新产品开发过程中技术状态管理中的管理接口来进行分析与设计。 相似文献
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为开发大型,超大型履带式推土机用橡胶减振器,经分析该机械的振动特征,建立了减振模型,探索出N弹性约束层组合结构参数和动态优化设计的方法,对开发出的橡胶减振器产品进行了系列试验,掌握了一整套开发此类新产品的理论研究,设计及试验方法。 相似文献
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改革传统工艺装备,提高工艺装备技术水平,使用现代组合可调整工艺装备,加快新产品研究开发进程。对现代组合可调整工艺装备进行分类,讨论了发展现代组合可调整工艺装备的一些问题。 相似文献
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用旧镗床改造为多缸柴油机气缸体专用镗床周光天,卜平(常州柴油机厂邮编213002)关键词气缸体,专用镗床加工多缸柴油机气缸体的主轴承孔与凸轮轴孔的传统工艺方法,是采用组合控床或普通镇床螳孔,但对于新产品从试制到中小批量生产,如采用组合螳床,其设计、制... 相似文献
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为开发大型、超大型履带式推土机用橡胶减振器,经分析该机械的振动特征,建立了减振模型,探索出N弹性约束层组合结构参数和动态优化设计的方法.对开发出的橡胶减振器产品进行了系列试验.掌握了一整套开发此类新产品的理论研究、设计及试验方法. 相似文献
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Saurav Datta Asish Bandyopadhyay Pradip Kumar Pal 《The International Journal of Advanced Manufacturing Technology》2008,39(11-12):1136-1143
A multi-response optimization problem has been developed in search of an optimal parametric combination to yield favorable bead geometry of submerged arc bead-on-plate weldment. Taguchi’s L25 orthogonal array (OA) design and the concept of signal-to-noise ratio (S/N ratio) have been used to derive objective functions to be optimized within experimental domain. The objective functions have been selected in relation to parameters of bead geometry viz. bead width, bead reinforcement, depth of penetration and depth of HAZ. The Taguchi approach followed by Grey relational analysis has been applied to solve this multi-response optimization problem. The significance of the factors on overall output feature of the weldment has also been evaluated quantitatively by analysis of variance method (ANOVA). Optimal result has been verified through additional experiment. This indicates application feasibility of the Grey-based Taguchi technique for continuous improvement in product quality in manufacturing industry. 相似文献
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为了使产品开发人员和企业开发新产品时符合用户的多维度感性需求,提出了一种面向用户复合意象的产品形态多目标优化设计方法。首先,应用语义差异评价和因子分析法抽取用户的复合意象维度;然后,采用形态分析法提取产品部件和外形单元要素;最后,在构建产品形态的BP意象预测模型的基础上,采用多目标遗传算法NSGAII求解最优方案。豆浆机实例表明,该方法适用于复合意象的产品形态优化设计,成功得到分布均匀的Pareto最优解,产品开发者可根据具体情况在多个目标之间交互选择优化方案,具有很好的指导作用和实际应用价值。 相似文献
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Jaeyoon Wang Sangjo Kim Naksoo Kim 《Journal of Mechanical Science and Technology》2013,27(5):1407-1414
Optimum product design can be realized through applying reasonable design of experiment (DOE) using state of the art computer simulations. The bearingless motor is a product combing the conventional electromotor with the active magnetic bearing (AMB) which rotates without a contact area. Therefore, it does not yield friction and there is no energy loss. The bearingless motor has a simple structure which enables high speed and precise positional controls. This study proposes an AMB with a new structure, which offers more stabilized rotations by enhancing flows of magnetic flux density. Also, this study provides optimum design of a bearingless motor which maximizes the torques, a general indicator of motor performances given conditions. For the purpose of designing a bearingless motor, proper design parameters have been selected. Design of experiment has been constructed using orthogonal arrays. Also, using the response surface method, an objective function which depicts the performance of a motor is obtained. The objective function which evaluates the performance of the motor has been optimized, and a bearingless rotation motor with the improved performance has been designed. By comparing the performance of the actual motor produced from the optimum design, the reliability is validated. 相似文献
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随着计算机技术的发展,反求工程技术和快速原型技术的结合日趋紧密,纯复制的反求工程已不再适应市场发展的需要,在产品的设计和制造阶段都需要具备创新环节的反求工程技术的支持。提出综合优化的方法:对扫描后获取的离散扫描点进行平面的三角剖分及环域间的三角剖分,生成STL文件格式,并结合环域划分风格的特点,使用最小权和最小内角最大化相融合的方法,实现二维优化:当二维坐标释放到空间后会破坏三角形形状,影响模型的质量,用增加点的方法,得到三维优化后的原产品模型的STL文件格式。在布尔运算的基础上,通过对反求模型的三角网格进行任意叠加和任意截取,产生新产品的STL文件格式;对新产品进行总体形状控制、过渡圆角处理等空间优化工作,最终实现新产品创新,缩短了产品的开发周期,降低了开发成本。 相似文献
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基于产品基因理论提出品牌基因意象,并以此为约束规则,采用形状文法对产品要素进行形状推演,从而实现产品形态创新的同时传承品牌文化。以美的壁挂式空调为例,进行产品形态设计,验证了该方法的可行性。将形状文法与基因约束结合起来,在实现产品形态创新的同时,可以有效地传承和发展品牌文化。 相似文献
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产品功能需求的定性及定量分析 总被引:10,自引:3,他引:7
为了能更加系统化地从功能设计角度分析产品功能在用户需求中的表现形式,提供分析和预测产品功能需求重要度的决策手段与方法,提出一种用户对产品功能需求的定性及定量分析方法。在定性分析方面,借鉴Kano模型的分类思想将产品功能需求分为基本功能、规范功能和兴趣功能三类,使用模糊聚类分析方法对散乱的需求信息进行合并归类;在定量分析方面,采用由层次分析法、熵值法和均方差法组成的主客观综合赋权法分析不同功能需求指标重要度的权重,并利用回归分析、灰理论和反向传播神经网络建立的组合预测模型预测功能需求重要度的变化。以某数控铣床的功能需求统计数据为例,说明此方法的可行性和有效性。 相似文献
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Zhao Yanwei Wang Wanliang Science Research Center Zhejiang University of Technology Zhang Guoxian Shanghai University 《机械工程学报(英文版)》2001,(2):156-159
0 INTRODUCTIONInrecent years,theresearchinartificialintelligenceismainlybasedondeductivereasoningmethodwhichcanonlydescribehuman’sabstractlogicthinking Infact,thecreativethinkingofhumanismostimportantinschemedesignoftheproducts Therhombusthinkingisakind… 相似文献
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Gregory C. Smith Samson S. Lee 《The International Journal of Advanced Manufacturing Technology》2005,25(3-4):270-280
Installing a non-contact in-process tool wear detection system on a computer numerical control lathe can help prevent product defects and improve product quality without impacting product cycle time. Many methods have been proposed for non-contact in-process tool wear detection. In particular, a recent international patent application describes a method for measuring the torque in a rotating axle using a high-frequency wireless transmitter/receiver and a vibrating string. The method has reportedly been used to detect cutting on a manual lathe. The authors present a new method for measuring tool wear using a high-frequency wireless transmitter/receiver alone, without a vibrating string. The high-frequency transmitter/receiver apparently responds to metal-metal contact noise rather than, or more strongly than, to signals generated by a vibrating string. The findings could help bring automated tool wear monitoring systems closer to the level of performance needed for practical use in industry. 相似文献