查询词典 cad cam

CAD/The CAM technology development, enables in the numerical control processing to become directly using the CAD design data possibly, specially the microcomputer and the numerical control engine bed joint, causes the design, the craft plan and the programming entire process completes completely on the computer, does not need to output the special technological document generally.

加工表面粗糙度要求低时，vF 可选择得大些。在加工过程中，vF 也可通过机床控制面板上的修调开关进行人工调整，但是最大进给速 www.3722.cn (整理。版权归原作者所有)如果您不是在 3722.cn 网站下载此资料的，不要随意相信。请访问3722，加入 3722.cn 必要时可将此文件解密度要受到设备刚度和进给系统性能等的限制。

Intelligent CAD module came true to be exchanged with AutoCAD data, the option that covers the data that checks module of; intelligence CAM to use CAD module to arise the design that can have a figure and scale, automatically to have cutting tool and method plan, generate a knife file, generate numerical control code then, the explanation that the system still accuses code through logarithm is compiled undertake orbit is emulated, make manufacturing implementation compositive change, intelligence is changed, automation.

智能CAD模块实现了和AutoCAD数据交换，可以进行图形的设计和绘制、自动套裁；智能CAM模块利用CAD模块产生的数据进行刀具的选择和路径规划，生成刀位文件，进而生成数控代码，系统还通过对数控代码的解释编译进行轨迹仿真，使生产实现集成化、智能化、自动化。

An integrated CAD/CAM software system developed by the CAD centerof Tsinghua University and some other institutions is presented. The systems con sists of six modules,namely user interface, interactive drafting, product modeling,analysis and optimization, NC Machining, and database management.

基于STEP的集成化CAD／CAM支撑软件系统孙家广，杨长贵（清华大学计算机科学与技术系北京100084）周济（华中理工大学机械学院武汉430074）顾元宪（大连理工大学力学研究所大连116024）摘要本文介绍了由清华大学CAD中心等单位开发的集成化CAD／CAM支撑软件系统。

Main points of the thesis are as follows:(1) The main function models and information relations between these models in the CAPP system in the integrated CAD/CAM project are explained, a new process plan design method is mentioned based on analyses of process plan design. This method is based on the process plan prototype, and develops the prototype little by little until the perfect process plan is completed, the prospect of this method is discussed;(2) The feature abstracting rules and methods are studied, a feature coding system is developed based on GT, all the defined feature models are described by the mathematical methods;(3) The integrated method of CAD/CAPP based on features is mentioned, this method defines a feature exchanging model, and develops an interface software to exchange design data into technology data base, this technology data base includes the design and technology information of the parts;(4) The process plan reasoning method based on features is created, this method uses Mycin algorithm to solve the reasoning of the feature process plan. A process plan making system is developed. In this system part process plan is made by the semi-intelligent method, this method uses the feature reasoning, feature process chain searching and man-computer talking together;(5) The main structure of the HOPE system is introduced, a shaft drawing and its process plan made by this system are shown, the data process problem in process drawing making is also discussed;(6) A new method of describing process rule is introduced, this method uses IfThen rules and neural nets weight values together to describe process rules, the BP algorithm is adopted in this method;(7) The optimal machining sequence problem of the process steps on the same fixturing is discussed, optimal algorithms SA is applied to solve this problem, the result shows that this method is more efficient than the traditional method;(8) All jobs in the thesis are summarized. In order to carry out the research in the future, some rational proposals are given.

全文论述的内容主要有下列几个方面：(1)较为系统地阐述了CAD／CAM一体化工程项目中CAPP系统的主要功能模块及其信息流程，在分析工艺设计过程的基础上，提出了基于特征原型的渐进式工艺设计方法，并探讨了该方法的应用前景；(2)研究了零件特征提取的原则和方法，在成组技术的基础上，开发了一套基于特征的分类编码系统，并在提取零件特征的基础上，定义了零件特征的数据模型，开发了基于轴类零件特征的参数化设计系统；(3)研究了基于特征的CAD／CAPP集成的方法，通过定义零件特征数据模型的存储结构，开发了将设计数据转换到工艺数据库中的接口程序，为后续的CAPP系统提供必要的零件形状和工艺信息；(4)研究了基于特征的工艺推理方法，将Mycin算法应用到工艺决策中，开发了基于特征的工艺推理及工艺方案生成系统，在系统中综合运用特征推理、特征加工工艺链查询及人机对话相结合的半智能化方法确定零件加工工艺；(5)介绍了整个HOPE系统的总体结构，通过运行HOPE系统绘出了一轴类零件的零件图，并生成了该零件的加工工艺方案，初步探讨了基于特征的工序图生成技术中数据处理问题；(6)研究了工艺设计过程中知识如何有效表示的问题，提出了将显式的IF-THEN规则表示与隐式神经网络权值表示相结合的工艺知识表示方法，并利用BP算法进行了工艺知识表示的初步研究；(7)研究了工艺设计过程中同一安装下工步优化排序问题，利用神经网络中基于模拟退火的理论来解决该工步优化排序问题，实践证明该方法较传统的算法具有更高的效率；(8)总结了本文所进行的研究工作，为今后进一步开展工作提出了较为合理的建议。

Years of CAD technology and systems with the rapid development of CAD / CAM applications to spread rapidly.

三十几年来CAD技术和系统有了飞速的发展，CAD/CAM的应用迅速普及。

With the development of computer network technique and CAD/CAM, it makes a good base for application of CAD technique.

计算机网络技术、CAD／CAM技术的发展，为CAD技术的应用奠定了良好基础。

CAD(a highly specific marker for lignification)was induced at early stage ofincompatible interaction and the CAD activity result from CAD gene expression ac-tivated by JXO V and was regulated by Ca2+ and △pH.

这种CAD活性的上升并非源于白叶枯病菌对其的直接激活，而源于对其基因表达的诱导，且CAD基因的表达要受到Ca2+信号的调节。

Repurpose CAD design data to publish richer technical documentation Quickly clean up CAD designs; create bills of materials; add and modify lighting, materials, or colors; create exploded views, balloons, and animations; and then save as PDF or 2D raster/vector images, creating richer and more interactive technical manuals without the need for an expensive CAD application.

重新安排的CAD设计数据的公布更丰富的技术文档快速清理的CAD设计；创造法案的材料；添加和修改的照明，材料，或颜色；制造爆炸的意见，气球，和动画；然后Save as PDF或二维点阵/向量图像，创造更丰富和更互动的技术手册，而不需要昂贵的CAD应用。

In its latest release, Actify has added several newly supported CAD formats, and has leveraged technology that radically improves the speed and quality of CAD file conversion to .3D for most of its CAD file importers.

经最新发布，Actify添加了几种新支持的CAD格式，并对技术进行了提升，改进了CAD文件到。3D格式的转换速度和转换品质。

The development of the sweater CAD at home and abroad is introduced firstly. Then basing on the premising of the theory of sweater production design ,the total structure 、 the main function、 the programming principle of the CAD system and the main algorithm are explained in detail. Finally the using method of the CAD system of sweater knitting technology is introduced.

本文首先介绍了羊毛衫CAD技术在国内外的发展情况，然后在引述羊毛衫产品设计原理的基础上，详细阐述了羊毛衫编织工艺CAD系统的总体结构、主要功能、程序设计原理和系统中用到的主要算法，最后详细介绍了羊毛衫编织工艺CAD系统的使用方法。

You have to walk your own alk in this life.

次生中你必须走自己的路。

To start with, the thesis analyses ***ism in terms of the generic masculine words, word order and semantic derogation of women in greater detail.

论文首先从阳性词泛指，词序，词义的贬降等方面对英语中的性别歧视现象进行了详细的分析。