二级浮动切刀结构在覆盖件修边模上的应用

针对汽车覆盖件修边模修边效果不好、安全性不高,介绍一种二级浮动切刀结构,该结构提高了覆盖件修边的表面质量和冲压设备的使用安全性,消除了生产中的潜在隐患。     

发动机罩内板修边冲孔模设计

通过发动机罩内板制件特点分析,应用三维参数化设计软件UG,进行了修边冲孔模具设计。阐述了模具设计过程,绘制了模具图,应用于生产中。     

基于技术进化趋势的裁剪方法研究

裁剪是TRIZ中一种有效解决问题的方法,其通过删除问题元件,重组系统有用功能进行产品创新设计,达到简化系统与优化产品的目的.为了启发和引导设计者在裁剪过程中有效地利用资源,在使用裁剪规则引导创新设计的基础上,以具有预测性和启发性的技术进化趋势作为知识源,综合分析进化趋势解题与裁剪规则引导功能重组的资源来源,构建了进化趋势与裁剪规则的映射关系,提出了基于裁剪规则的多层次进化趋势选择策略,利用进化趋势辅助功能重组,构建了基于进化趋势的裁剪方法过程模型.最后通过钢带铠装机裁剪实例验证了此方法的合理性.     

胶料配方计算机辅助设计的研究Ⅰ试验设计和过程建模

选用二次通用旋转组合设计安排配方试验。依照节省参数原理，获得计算机配方设计过程成参数的高精度数学模型。     

面向三维剪纸的网格模型切割方法

提出了一种改进的三维网格模型切割算法,在切割每个图案时首先检查面片区域是否已被其他图案修改,并在修改之后对应的面片区域上进行切割且记录切割结果,最后将三维网格模型表面封闭剪纸图案内的顶点和面片剔除,得到像手工剪纸那样的镂空效果.三维剪纸可以广泛应用于动画、教育以及娱乐产业中.     

Boundary-trimmed 3D triangular mesh segmentation based on iterative merging strategy

This paper presents a segmentation algorithm for 3D triangular mesh data. The proposed algorithm uses iterative merging of adjacent triangle pairs based on their orientations. The oversegmented regions are merged again in an iterative region merging process. Finally, the noisy boundaries of each region are refined. The boundaries of each region contain perceptually important geometric information of the entire mesh model. According to the purpose of the segmentation, the proposed mesh-segmentation algorithm supports various types of segmentation by controlling parameters.     

基于相似度函数的图像椒盐噪声自适应滤除算法

在分析现有的细节保护滤波算法的基础上,提出了一种基于相似度函数的自适应权重滤波算法. 主要技术包括分析 Maximum-minimum 椒盐噪声检测算子的局部极值误判缺陷, 并利用具有良好细节保护特性的相似度函数自适应权重算法来解决这一问题. 在滤波过程中采用极值剪切操作来估计图像的局部噪声密度, 用来选择合适形式的滤波窗口(递归或非递归), 从而利用单一的 3×3 滤波窗口就实现了对不同密度椒盐噪声的自适应有效去除. 实验表明, 该算法的噪声滤除能力、细节保护能力以及运算效率都可以得到满意的结果.     

Application of Various Lasers to Laser Trimming Resistance System

Though the laser trimming resistance has been an old laser machining industry for over 30 years, the development of technology brings new alternative lasers which can be used for the traditional machining. The paper describes application of various lasers to laser trimming resistance system including early traditional krypton arc lamp pumped Nd：YAG to laser, modern popular diode pumped solid state laser and the present advanced harmonic diode pumped solid state laser. Using the new alternative lasers in the laser trimming resistance system can dramatically improve the yields and equipment performance.     

Object trimming: When masking dots alter rather than replace target representations.

Five experiments demonstrate that when dots appear beside a briefly presented target object, and persist on view longer than the target, the flanked object is perceptually altered by the dots. Three methods are used to explore this object trimming effect. Experiments 1–3 assess participants’ conscious reports of trimmed digits, Experiment 4 uses repetition priming to explore the target representation, and Experiment 5 examines the perception of apparent motion in trimmed targets. Results of all three methods indicate that object trimming is influenced by mechanisms of perceptual grouping that operate on target representations prior to conscious access. Separate contributions from visual crowding and backward masking are also identified. These results imply that common-onset masking does not always result from the target being substituted by the mask, but that target and mask can sometimes maintain separate mental representations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

延迟焦化辐射进料泵节能改造

对某炼厂延迟焦化辐射进料泵的运行情况进行了分析,论证了切割叶轮、拆去个别叶轮、变频调速3种改造方案的优劣,发现实施拆除个别叶轮的方案较好,并按此法对某炼厂延迟焦化辐射进料泵实施改造,改造后泵性能完全可以满足生产要求,电机运行电流降低了10A,经济效益明显。最后提出了拆去个别叶轮与叶轮切割组合实施的方案最具经济性。