An automatic generation method of 3d assembly dimension chains is proposed based on 3d CAD models.
提出了一种基于CAD模型的三维装配尺寸链自动生成方法。
The method is validated by our own-developed 3d assembly dimension chain automatic generation system.
该方法已在自主开发的三维装配尺寸链自动生成系统中得到了验证。
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。
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。
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。
A rapid diagnosis method synthesized data mining technology and assembly process knowledge for body-in-white assembly dimension error sources is presented.
提出一种将数据挖掘技术与装配工艺知识相融合的白车身装配尺寸偏差源快速诊断方法。
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。
Single list concept - a list in the assembly data model describes a new dimension in the data.
单一列表概念—程序集数据模型中的一个列表描述数据中的一个新层面。
Utilizing the shortest path algorithm in Graph Theory to search functional dimension chains automatically in the assembly model and ascertain the functional dimensions of the part.
运用图论中的最短路径搜索算法从装配模型中自动搜索出功能约束尺寸链，确定零件的功能尺寸。
In the third chapter, the constraints mechanism of MDT is studied. Dimension constraints, geometric constraints and assembly constraints of MDT are analyzed.
第三章：研究了MDT的约束机制，分析了MDT支持的三种约束：尺寸约束、几何约束和装配约束的特点。
In the second chapter, the constraints mechanism of MDT is studied. Dimension constraints, geometric constraints and assembly constraints of MDT are analyzed.
第二章：研究了MDT的约束机制，分析了MDT支持的三种约束：尺寸约束、几何约束和装配约束的特点。
A dimension specified for a given feature on one level of drawing, (for example, a detail drawing) is not mandatory for that feature at any other level (for example, an assembly drawing).
一个图纸层面上的给定部品的尺寸(比如，细部图)并不能强制地标注在另外一个层面的图纸上(比如说，装配图)。
The dimension inspection should be finished before the assembly and the welding and after the final welding, and it should be recorded immediately.
尺寸检查应在组对、焊接前和最终焊接完成后立即进行并记录。
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。
Torsional breekage, at the bottom of a flexible wheel has been found in the experiment , such breakage being strongly influenced by the dimension of fastening and assembly stresses .
实验中不仅发现柔轮杯底扭裂这一事实，而且发现紧固件螺钉头部的尺寸及装配应力对柔轮杯底的扭裂均产生不可忽视的影响。
The dimension instability is caused by aluminium alloy deformation. The methods such as heat treatment and assembly to control the inspection device deformation are put forward.
对于铝合金检具变形引起的尺寸不稳定，给予规范的热处理和粘接装配，使发动机缸体用检具本体变形得到控制。
This paper introduces the method of making sand core, explains the influence of the head design of sand core, assembly of sand core and other factors on the dimension precision of casting.
介绍了制芯方法，阐述了芯头设计、砂芯的组装及其它因素对铸件尺寸精度的影响。
In the variant design process, the author adopts Top-Down method and drives the dimension, the feature of the parts and assembly according the request of the variant product to design the new product.
在变型设计过程中，作者采用自顶向下的设计方法来完成设计过程，并根据不同零件的特性分别采用相应变型设计方法如尺寸驱动法、特征控制法和访问零件库法来实现变型设计。
The three dimension CAD model of the car body is created based on connection property between assembly and part.
根据车身总成分及零件装配关系建立了车身三维实体模型。
Disposing the optimum location of a relative tolerance zone of the closed dimension can simplify the adjustment process of an assembly production.
将封闭环协调公差带配置在最佳位置，可使产品装配的调校过程简化。
Multiplayer shells assembly have characteristic, which are high dimension precision, strict form and position tolerance, difficult bond technology and etc.
多层壳体组件具有尺寸精度高、形位公差要求严、粘接难度大等特点。
In order to optimize tolerance values for an assembly system, a model for geometric dimension tolerance optimization was established and an algorithm for optimal tolerance design was proposed.
为优化装配系统中公差链的公差值，建立了几何尺寸公差的优化模型，并提出公差的分层优化设计算法：第一层，解决设计公称值居中的优化问题；
The measurement assembly has at least one dimension measurement apparatus and at least one magnetic flux measurement apparatus.
测量组件具有至少一个尺寸测量设备和至少一个磁通测量设备。
By dividing the dimension of constraint system to some assembly elements the constraint system can be deminished, and the local character can be utilized.
在贵池地区，受特定的地质条件的控制，元素的分布分配、地球化学异常的展布和异常元素组合具有鲜明的特征。
By dividing the dimension of constraint system to some assembly elements the constraint system can be deminished, and the local character can be utilized.
在贵池地区，受特定的地质条件的控制，元素的分布分配、地球化学异常的展布和异常元素组合具有鲜明的特征。
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