查询词典 cad cam

In this paper , the application and prosperity of CAD/CAM Technology applied on 5-Axis production center, one type of which is DECKEL MAHO machine, is generally surveyed. One large part of this study concentrates on the HSM related to 5-Axis technology and CAD/CAM, especially, the achievement and technique about the HSM strategy carried on 5-Axis production.

本文综合论述了CAD/CAM技术在五坐标数控加工中心的应用情况及前景，着重就高速加工技术、五坐标数控加工技术和CAD/CAM技术之间的联系，探讨了高速加工策略在五坐标数控加工中心实现的方法和步骤。

Combined with DMU70V, from DECKEL MAHO, this paper presents a full work report as follows:Giving a compositive demonstration about the comparison of all type of CAD/CAM systems available in the macket , developing the proper one as the fundamental system for the study; Creating and programming the DMU70V-CAD/CAM Documentary system; analyzing Free feature modeling from the point of HSM and machining technics of 5-Axis production and the measure of HSM carried through;developing the postprocess document of HEIDENHAINTNC426 Controller which is now used on DMU70V.

同时结合德国MAHOO公司的DMU70V五坐标数控加工中心的实际情况，着重就CAD/CAM支持系统的选择论证和综合分析、CAD/CAM文件系统管理规划、基于高速加工角度的功能曲面的建模及其分析、加工过程的工艺规划和高速加工策略实现的方法、HEIDENHAINTNC426控制器后处理技术五个方面进行了探讨研究。

In chapter 4, basing theories and methods of scientific visualization, and artificial neural network BP algorithm, we integrate the Visual C++, OpenGL graphics library and Excel VBA technique to develop the program of artificial neural network and to make the BP algorithm visually, this program works can be divided into four parts: Using C language to develop program about BP algorithm; Using Visual C++, develop the GUI Interface, make input parameter visually; Using OpenGL graphic technique to display the training sample point in three dimension; at last using Excel DDE technique display the error graphic tables in Excel system In chapter 5, on the view of engineering application, we establish new method of surface reconstruction basing artificial neural network, develop interface program between module and commercial CAD/CAM system, meantime deeply discuss some key problems, for example, setting up the base plane, using the API technique, cutting and editing surface boundary, and also discuss the more compliant problem: how to intersect surface, at end we finish the work of translation from our surface reconstruction module to commercial CAD/CAM system, then make reverse engineering system basing artificial neural network more useful.

第四章基于科学计算可视化理论，依据人工神经网络BP算法理论模型，综合Visual C++，OpenGL图形库以及Excel VBA等多项软件开发技术，编制了人工神经网络程序，实现了BP算法的可视化映射。具体工作分为四部分：利用C语言实现人工神经网络BP算法；利用VisualC++的GUI技术开发图形用户界面，实现参数设置可视化；利用OpenGL图形技术进行三维映射，显示学习样本及训练样本点；利用微软电子表格DDE动态数据交换技术，在Excel上动态显示学习误差曲线图。第五章从工程应用的角度出发，提出了一种新的基于人工神经网络算法的曲面裁剪重构方法，完成了曲面重建模块与通用CAD/CAM系统的接口设计工作，对其中的若干关键问题进行了深入讨论，例如基平面设定、API技术的应用、边界裁剪等问题，同时，对曲面计算中较为困难的曲面相交问题也进行的专门探讨，最终完成了曲面重建模块向CAD/CAM系统的数据传输工作，使人工神经网络逆向工程系统趋向实用。

ABSTRACT This thesis deals with the data management problems in CAD/CAM system and develops a new CAD/CAM data management system——PORR, some of the key techniques of the system are discussed in detail.

本文工作主要是围绕着解决CAD/CAM系统中数据管理问题展开的，提出了一个新型的面向CAD/CAM的数据管理系统——PORR，并详细论述了其中几个关键技术的设计与实现问题。

Which is set up in the beginning of 1980,and developed with BasicA programming language based at the platform of DOS, the CAD/CAM System of Cold Press Dies is the outstanding CAD/CAM software that is proper to those small and medium-sized enterprises. But with the rapidly developing in the hardware and software of computer industry, it is forced to be faced to the being reformed or sifted out.

建立于80年代初期、在DOS平台上应用BasicA语言开发的冲裁模CAD/CAM系统是一个适用于中小企业使用的相当优秀的模具设计制造应用软件，但是随着计算机行业软件和硬件的迅速发展，使其面临着被改造或是退出历史舞台的命运。

The introduction of international advanced CAD / CAE / CAM technology system with a CAD / CAM graphics workstations, plotters.

引进了国际先进的CAD/CAE/CAM技术体系，拥有CAD/CAM图形工作站、绘图机。

The CAD/CAM process of the handle part was implemented, including constructing 3D entity modeler, creating tool path, computer simulating, postprocessing cutter location files into tape files for a specific machine tool, transferring machining information of the handle part by the Network-based CAD/CAM Prototype System, NC machining of the handle part at last.

利用网络化CAD/CAM原型系统实现手柄零件CAD/CAM过程，包括手柄三维实体造型、刀位轨迹生成、计算机仿真检验，后置处理生成特定机床的G代码，通过网络传输手柄零件加工信息，最后完成手柄零件的数控加工。

The integration of Web and CAD/CAM technique, is the trend of CAD/CAM system.

将Web技术和CAD／CAM技术相结合，是CAD／CAM系统发展的重要方向之一。

This paper has pointed out the deficiencies of car body design in our country at present; proposed a new car body design process under CAD/CAM integrated circumstances, set up the construction of car body CAD system and analyzed the main techniques of designing car body CAD system, i. e. the methods of modelling car body surface and setting up three dimension product model of car body parts.

本文在阐述了建立汽车车身CAD必要性的基础上，总结了现行车身设计存在的不足，提出了在CAD/CAM集成环境下新的汽车车身设计的流程，建立了汽车车身CAD的系统结构，分析了实现车身CAD的主要技术即车身表面曲线曲面的构造方式和车身零件三维产品模型的建立。

These findings demonstrated that, 1 UVA may be the more important action spectrum of CAD than that of UVB; 2 the action spectrum of CAD could change from UVA to UVB and vice versa; 3 The reevaluation of MED may be advisable for the patients who have typical clinical features of CAD; 4 photoallergens and contact allergens may all play important roles in the pathogenesis of CAD and it would be testified by further follow up.

1UVA在CAD作用光谱中的地位较UVB更为重要。2CAD的作用光谱具有波动性，光敏感性增强可从一个波段变化至另一波段。3对仅临床符合CAD的患者应随访MED变化。4接触性变应原与CAD发病密切相关，进一步的随访可能会证实二者的因果关系。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。