将设计公差分成全局公差和局部公差，通过引入相对公差因子概念，将全局公差转化为相对公差因子，作为特征间约束的权值。
By introducing the concept of relative tolerance factor, the global tolerances were transferred into relative tolerance factors as the constraint weights between features.
其中尺寸链自动生成是进行计算机辅助公差设计的基础，它所描述的设计函数是进行公差分析和公差综合的依据。
Among them the automatic generation of dimension chain is the foundation of CAT and the described design function offers basis of tolerance analysis and tolerance synthesis.
这样小的公差要求仔细设计和精心加工石墨舟皿和滑动器，从而使滑动器的滑动平滑而没有跳动。
Such small tolerances require careful design and machining of the graphite boat and slider so that the sliding motion is smooth and without jitter.
通过对数字化预装配方法的分析，提出了基于数字化产品设计模型的装配公差分析和优化方法。
The assembly tolerance analysis and optimization method based on digital product design model is put forward according to the analysis of digitalization preassembly method.
尺寸和公差仅仅适用在所设计的层面。
Dimensions and tolerances apply only at the drawing level where they are specified.
为了保证零件装配，并满足产品设计要求，介绍了延伸公差带的三种应用场合。
The applications of the extension tolerance zone are introduced in order to guarantee the assembly and design.
在设计图纸上标注尺寸和公差是产品设计的两个重要阶段。
To mark dimensions and tolerances on the designing drawing are the two important phases for product design.
在满足系统稳健前提下，对稳健性公差设计作了讨论。
On the premise of robustness, discussion has been conduct to robust tolerance design.
在机械零件设计中，正确、合理地应用公差原则，是提高机械零件的设计质量、工艺性和实现最佳技术经济指标的有效途径。
In machine components design, to use tolerances principle correctly can improve designing quality and craft nature of machine components, realize the best technical and economical indexes.
通过建立并求解优化模型，可实现工序公差的并行优化设计，最后给出了一个工程实例。
Through formulating and solving the optimization model, the concurrent design of process tolerances can be made. Finally a practical example is given.
完成了计算机辅助二维公差设计原型系统。
The prototype system for two-dimensional tolerance design is accomplished.
工件在验收过程中的验收极限和设计中尺寸公差的极限尺寸不是同一个概念。
This article elucidates the acceptance limit and dimension tolerance designing in the course of acceptance inspection.
在尺寸及公差设计中，该方法简单、易行，而且可以获得高的计算精度。
The method is easy to use in dimension and tolerance design and has high accuracy.
结果表明该方法保证了凸轮机构公差设计一次达到最优，从而实现了一次产品成功。
The result shows that though such method we can efficiently obtain first tolerance design optimum for CAM mechanism, and thus realizes first Product Correct (FPC).
最后给出了该方法在减震器弹簧公差设计中的应用实例。
In the end, a sample of spring absorber tolerance design is introduced.
运用图论和尺寸链理论，分析了公差设计函数自动生成的机理和实现方法；
The paper analyzed the principal and practicing method of automatic generation of tolerance design function by using graph theory and dimensional chain theory.
结果表明，该方法保证了凸轮机构公差设计一次达到最优，从而实现了一次产品成功。
The result shows that this method ensured the tolerance design of cam mechanism could attain optimal on its first application, thus achieved First Product Correct (FPC).
提出了基于事物特性表的公差主模型的建立方法，分析了基于事物特性表的公差变型设计过程。
A method of generating tolerance master model based on SML was addressed, and a variant design process based on SML was proposed.
给出了在UG平台上实现计算机辅助公差设计模块的开发方案以及利用该模块进行飞机装配部件公差设计的运行实例。
A development plan of computer-aided tolerance design module on UG platform is presented. An example for tolerance design of aircraft assembly part is given by using this module.
研究了公差分析与优化设计的方法，分析了导引头伺服机构公差分析与设计的主要关键技术。
A method of tolerance analysis and optimization design is investigated. The main key techniques of tolerance analysis and design of the servo mechanism of the guidance head is analyzed.
这就要求计量器具的尺寸和公差带设计要合理。
This requires rationally designing the size and tolerance zone of calculative utensil.
至少3年的产品设计经验，如良好的绘图方法，公差分析，装配设计，失效模式与效应分析(FMEA)。
At least 3 years of product design experience such as Good Drawing Office practices, Tolerance Analysis, design For Assembly, Failure Mode and Effect Analysis (FMEA).
公差优化设计是在机械产品设计和制造过程中的一项重要内容，而在计算机应用中，建模也是一个重要的步骤。
Optimum tolerance design is one of important steps in the process of machine design and manufacture and in the application of computer, and model-building is an important step.
通用设计的角接触球轴承的公差可参考第56页上的径向轴承。
For tolerances of angular contact ball bearings of universal design, see radial bearings on page 56.
设计光学镜头并进行公差分析，研究并提出光学测量方案，选择塑胶材料。
Design of optical lens and tolerance analysis, Research and optical measurement scheme is put forward and select plastic material.
分析在设计过程中自动生成局部尺寸链和全局尺寸链的方法，建立公差设计和反馈的整体框架。
The local dimension chain and overall dimension chain are set up automatically. The whole frame of tolerance design and relevant feeding back is established.
本文提出了考虑加工成本、质量损失成本、装配件的装配性能要求等的一种工序公差设计的新方法。
The paper gives a new method for computer aided process tolerance design which considers production cost and quality loss cost and assembly function requirements.
给出了基于三维CAD系统的计算机辅助尺寸公差和形位公差综合设计的总体框架和原型系统。
The general framework and prototype system for synthetic design of dimensional and geometric tolerance based on three- dimensional CAD system are established.
首先介绍生长型设计的基本概念和模型，而后研究结构与公差并行设计的过程模型。
First, the basic concepts and the principles of the growth design are explained. Then the process model of tolerance synchronous synthesis is built.
首先介绍生长型设计的基本概念和模型，而后研究结构与公差并行设计的过程模型。
First, the basic concepts and the principles of the growth design are explained. Then the process model of tolerance synchronous synthesis is built.
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