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.
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。
Dimension chain is one of the keys and difficulties of "Manufactural Technology of Machinery".
尺寸链的教学是《机械制造工艺学》课程的重点和难点内容之一。
Authors analyzed uncertainties of error and tolerance, found that it is feasible to describe it by gray uncertainty theory, and solved dimension chain through gray mathematics equation.
作者分析了误差和公差的不确定性，发现它们可用灰色不确定性描述，并应用区间灰数数学方程来作了尺寸链的求解。
To make use of dimension chain principle in comprehensive and accumulated analysis of element parts size and error is an important composition part for quality analysis in machine building.
利用尺寸链原理对机器零部件尺寸及其误差进行综合与累积，是机器制造中质量分析的一个重要组成部分。
For solving the accumulation of angular error, in this paper, a new method for calculating angular dimension chain is proposed.
为了解决角度误差的累积问题，本文提出了一种角度尺寸链计算的新方法。
During machine design, tolerance of unit ring in assembly dimension chain is usually determined by using either equal tolerance or equal accuracy method.
在机械设计中，装配尺寸链的组成环公差，一般是采用等公差法或等精度法来确定。
This text mainly analyzes the application of dimension chain principle, the method to get assembly accuracy and the guarantees for reasonably solving machine quality.
着重分析应用尺寸链的原理，达到装配精度的方法，合理解决机器质量的保证问题。
The process of generating dimension chain does reflect the kernel of assembly function.
尺寸链的形成过程反映了装配函数的核心内容。
Therefore, when deciding tolerances of the process before or after nitriding, the formulas involving the correlation dimension chain must be adopted in calculating.
因此，在确定氮化前后的工序尺寸公差时，应采用相关尺寸链的公式进行计算。
Several complementary computing dimension chain formulas of Extremum Method and Probability Method are deduced.
推导了使用极值法、概率法计算尺寸链的补充公式。
The resolving of dimension chain is the base of making craftwork.
工艺尺寸链的解算是制定工艺的基础。
Using the graph theory model for solving the dimension chain in technologic process of component part machining is a new mode.
图论法是解零件加工工艺尺寸链的一种新方法，已在机械行业得到初步应用。
Assistant location error calculating of the combination fixture is based on the theory of dimension chain.
采用尺寸链原理进行组合夹具的辅助定位误差计算。
The paper mainly solves the problem of reasonable dimensioning parts with the help of the concept of dimension chain.
着重阐述了应用尺寸链的概念来解决零部件尺寸的合理标注问题。
In the fourth chapter, the automatic generation theory of the dimension chain based on assemble drawing is put forward.
第四章：提出了基于装配图约束关系的尺寸链自动生成原理。
Through the map of 3d process picture sheet model and the parameterization of 3d dimension chain model, a process model structure was constructed.
通过3d工序图模型和参数化空间尺寸链模型的映射，构造工艺模型结构。
The local dimension chain and overall dimension chain are set up automatically. The whole frame of tolerance design and relevant feeding back is established.
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。
But the calculation and distribution of the dimension chain is done manually as before.
但尺寸链的计算与分配仍需要手工进行。
The characteristics to dimension chain constraint is analysed, dimension loop model is put forward based on the dimension chain for solving dimension relationship constraints.
针对尺寸之间的关联约束，本文首先分析了尺寸链约束的特点，提出了基于尺寸链的尺寸环模型。
In this paper the basic concepts of the robustness of plane dimension chain is put forward on the basis of engineering robust design principle.
基于稳健设计和稳健优化设计原理，提出了平面尺寸链稳健性基本概念。
This paper expounds the application of "graph theory" in machinofacture, Such as, analysis of process engineering, calculation of technological dimension chain and assemblage dimension chain, etc.
阐述“图论”在机械制造中的工艺过程分析、工艺尺寸链和装配尺寸链的计算等方面的应用。
This paper puts forward a new, simple and practical method to solve the angular dimension chain, by making angular dimension chain for the important dimension in machine.
通过建立机床设计中常遇到的角度尺寸链，提出了更为简单适用的角度尺寸链的求解方法。
This paper summarizes the rational application of assembly dimension chain in mechanical product design, manufacturing and maintenance process.
归纳总结装配尺寸链在机械产品设计、制造和维修过程中的合理应用。
Above all, the "Principle of dimension matching" was summarized from the practice, so that the effect of chain-terminating atoms would be ignored and the deviation of simulation was reduced.
从计算实践中总结出“尺寸匹配原则”，以达到消除端基影响和避免模拟偏离实际的目的。
In this paper, a method for generating automatically the function of linear dimension chain is introduced and the programming flow chart and handling of key tachnologies are also given.
本文介绍了一种线性尺寸链函数式自动生成的方法 ，并给出了程序流程及关键技术的处理办法。
Improving of material, dimension, heat-treatment, construction form on the chain of bucket conveyor are introduced, then increase service life of bucket conveyor.
通过对斗式提升机链条的材质、尺寸、热处理、结构形式的改进，从而提高了其使用寿命。
In chapter 5, generation principle of the assembly dimension chain is presented faced to 3d CAD drawing.
第五章：提出了基于三维装配图的尺寸链自动生成策略。
PCR-chip is a function biochip for DNA polymerase chain reaction. The temperature control section is so important that it decides the performance, dimension, integration of the whole chip.
P CR芯片是进行DNA聚合酶链式反应的芯片，温控部分的搭构是决定整个PCR芯片性能、尺寸、集成化的重要组成部分。
The mechanism of low voltage miniature circuit breaker is very complicate, thus its assembly dimension chain and the tolerance of critical dimensions are researched.
由此，对微型断路器机构的装配尺寸链和关键尺寸公差进行了研究。
Many parameter methods for solving the dimension chain have been developed since the 1950' s. They are not strict in theory and have inherent method errors.
解尺寸链的许多方法属于参数法，它们在理论上不够严格，存在方法误差。
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