( 5 ) use the example to introducing the entire implementing process of the mechanical assembly modeling & automatic dimensioning technique on parts in detail ( 5 )结合实例,详细地介绍了机械装配建模和零件尺寸标注自动化技术的完整的实现过程。
( 4 ) automatically grouping dimensions by their directions , accomplishing the priority level enactment of dimensions and implementing the optimal lay of dimensions on the part drawing under the cad environment ( 4 )自动对待标注的尺寸按方向进行分组、完成尺寸的优先级设定、在cad环境下实现尺寸标注在零件图上的优化布置。
It is an important part in cadt field and of great significance in engineering to utilize computer to aid engineers to ascertain the suitable dimensioning mode , complete the automatic dimensioning of parts 利用计算机来辅助确定零件合适的尺寸标注模式、完成零件尺寸的自动化标注,是计算机辅助尺寸和公差设计研究领域中的一个重要部分,具有重大的工程意义。
Our photographs are all pictured in real , but we want to remind you of the differences due to the light and your screen ' s brightness , pay attention to our directions ! . ^ _ ^ 粉色世纪坚持实物拍摄,不过需要提醒您的是,照片观感和实物感受多少会有差别,购买时请注意我们的尺寸标注,因显示器的设置和色差,商品的颜色可能会略有差异,请您以实物为准哦(实物宝贝比照片更漂亮呦) . ^ _ ^
Our photographs are all pictured in real , but we want to remind you of the differences due to the light and your screen ' s brightness , pay attention to our directions ! . ^ _ ^ 漂亮宝贝坚持实物拍摄,不过需要提醒您的是,照片观感和实物感受多少会有差别,购买时请注意我们的尺寸标注,因显示器的设置和色差,商品的颜色可能会略有差异,请您以实物为准哦(实物宝贝比照片更漂亮呦) . ^ _ ^
Based on primitive solid synthesizing , a method of extracting primitive solid from feature model is studied , and a method of distributing , adjusting dimensions in each view is advanced , thus correct and distinct dimensioning can be obtained 本文从基本形体集成角度出发,研究了特征模型中各个基本形体的获取方法,提出了尺寸在各视图中分配、调整技术,从而满足尺寸标注的正确性和清晰性要求。
( 3 ) on the basis of the dimensioning principle of correctness , integrality , clearness and rationality , utilizing the modified spanning tree algorithm in graph theory to ascertain the non - functional dimensions , accomplish the dimensioning mode analysis of the part ( 3 )根据尺寸标注所要求的正确性、完整性、清晰性及合理性等原则,用改进了的图论中的生成树算法,确定出零件的非功能尺寸,完成零件尺寸标注模式的分析。
2 . on information extraction and recognition , some rules of dimension mark extraction are summarized by analyzing the dimension restriction semantics , then effective methods of extracting text information from heading - table and filtering drawing ’ s peripheral frame are presented , in addition , this paper also discusses cutaway view ’ s recognition and pre - processing . 3 2 .在信息提取与识别方面,分析了尺寸标注约束语义,总结出尺寸标注提取的规则;给出了标题栏信息提取和工程图纸图框过滤的方法;详细讨论了有关剖视信息的提取、识别和预处理方法。
In chapter 2 , the thesis discusses differences and connections between the dimension model and the dimensioning model . on the basis of the analysis of functional semantics of dimensions , a dimension model based on functional semantics is developed , and its four levels are defined in detail : shaping level of functional semantics , locating level of functional semantics , machining level of functional semantics , assembly level of functional semantics 在第二章中,探讨了尺寸模型与尺寸标注模型之间的关系,在分析尺寸各种功能语义的基础上建立了基于功能语义的尺寸模型,并详细定义了尺寸模型的四个层次:定形功能语义层、定位功能语义层、加工功能语义层、装配功能语义层。
In such a background , with the in - depth research on key techniques such as " assembly modeling " 、 " application of dimension chain technique " 、 " research on dimensioning mode " , the flexible application of correlative mathematical tools in graph theory , the utilization of relatively convenient activex technique provided by cad , the corresponding system has been developed to ascertain the functional dimensions and dimensioning mode , complete the automatic dimensioning of parts 本文就是在这样的一个大背景下,通过对“装配建模” 、 “尺寸链技术的应用” 、 “尺寸标注模式的研究”等关键技术进行深入的研究,灵活应用图论中的相关数学工具,利用现代cad环境所提供的比较方便的activex技术,开发出相应的系统,确定出零件的功能尺寸和标注模式,实现零件尺寸标注的自动化。