公差值

扼要介绍有关对称结构尺寸公差值选择和计算以及在使用中应注意的问题。

Selection and calculation on tolerance value of symmetry construction were briefly introduced , some problems that should be paid attention to were also discussed .

样板直尺测量面直线度公差值的研究

The Investigation on Linearity Tolerance Value of Straight Edge Measurement Plane

查取公差值后能在AutoCAD中实现尺寸、形状、位置公差的自动标注；

After inquiring the value of the tolerance of dimension , shape and placement , then it can be marked automatically in AutoCAD .

对同轴度基准及其公差值选择的探讨

Discussion on Selecting Base line and Tolerance of Coaxial Level

本文比较详细地介绍了位置度公差值的计算公式及如何标注。

In this paper , the calculating formula and marking method of positioning tolerance are presented in detail .

对零件进行容差分配，根据设计给出的整车外观间隙阶差公差值进行容差向子组件的分配。

Tolerance allocation , according to the design gives the appearance of the vehicle gap gradient tolerance value tolerance allocated to the sub-assembly of parts .

根据传动精度指标，最佳地规定和分配各传动零件参数、精度等级及公差值，使之满足设计、工艺要求。

The best parameters , precision grades and allowable errors of the transmission parts can be obtained by optimization to let the actuators meet the performance , technology and economy requirements simultaneously .

同时讨论了模内复膜产品设计原则以及装饰膜的预成型工艺及其公差经验值。

The design guideline of the plastics products with insert film decoration and the position deviation experience tolerance of the film pre-form process are discussed .

超差：公差的极限值，通常在外径上发生。

SLOPPY : Extreme limits of tolerance , usually outside .

一种方法是用公差的中间值作为终点坐标的尺寸编程；

One of them is dimension programming with tolerance median as the end-point coordinate value .

另一种方法是用公称尺寸编程，用公差的中间值作与公称尺寸的差值作为刀补值，通过刀具补偿保证尺寸要求。

The other is nominal dimension programming with the margin value between tolerance median and nominal dimension as tool offset value to ensure dimensions .

若经适当质量控制计划证实，业主可降低制造和安装公差的修正值，因此，该等公差限值是按建议规定的，而非绝对限值。

An owner may reduce the fabrication and setting tolerance allowances if justified by a suitable quality control plan ; therefore , these tolerance limits are stated as recommendations rather than absolute limits .

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；

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 .

通过对三种公差原则的尺寸公差值和公差带利用率的分析，给出应用公差原则的选择原则。

Based on the analysis on the size tolerance rules and tolerance range usage ratio of three kinds of tolerance rules , give out the selection rules .

同轴度误差属于定位误差，其公差带是以基准轴线为轴线、以公差值为直径的圆柱面区域。

Concentricity error is positioning error , The tolerance zone is a reference axis for axis , with tolerance values for diameter cylinder .

该软件采用交互式窗口，操作简单，能迅速正确地确定齿轮三个公差组精度等级、齿厚极限偏差、各公差组的检验项目及其公差值。

This software used an interactive window , so the operation is simple , and can define rapidly correctly three gear tolerance classes , the tooth thick limit deviation , various tolerance class test item and the value of tolerance .

如果同轴度公差是在实效状态给定的，它还能从轴线直线度公差和垂直度公差等获得补偿值。

Given a coaxial tolerance in the virtual condition , it may further be compensated from the axial straightness tolerance or the perpendicularity tolerance , etc.