HES A 2130-99 形位公差的定义及表示方法-CN.pdf

HESA2130-99

DEFINITIONSANDDESIGNATIONSOFGEOMETRICAL

DEVIATIONS共18页第1页

形位公差的定义及表示方法本田标准-图纸标准

1.SCOPE(范围)

Thisstandardspecifiesthedeviationsanddesignationsofgeometricaldeviationsoftheconsideredobject(*1).

Note(*1):Geometricaldeviationsrefertoformdeviations(straightness,flatness,circularity,cylindricity,profileofany

line,profileofanysurface),orientationdeviations(parallelism,perpendicularity,angularity),locationdeviations

(positionaldeviation,coaxialityandconcentricity,symmetry)andrun-outs(circularrun-outandtotalrun-out)

Remarks:Themethodsofdesignationanddrawingindicationofgeometricaltoleranceswhicharethepermissible

valuesoftheabovegeometricaldeviationswithgeometricaltolerancesymbolsshallbebasedonHESA2131.

该标准规定了（*1）形位公差的定义和名称。

注（*1）：形位公差指的是：形状公差（直线度，平面度，圆度，圆柱度，任何线的轮廓，任何表面的轮廓），定向

公差（平行度，垂直度，倾斜度），定位公差(位置度，同轴度和同心度，对称性)和跳动公差(圆形跳动和总跳动)。

备注：形位公差的标注方法参考HESA2131。

2.DEFINITIONS（定义）

1)Feature

Apoint,line,axis,surface,ormedianplaneastheobjectofgeometricaldeviations.

2)Singlefeature

Afeatureforwhichgeometricaldeviationsaredeterminedwithoutrelationtodatums.

3)Relatedfeature

Afeatureforwhichgeometricaldeviationsaredeterminedinrelationtodatums.

4)Datum

Atheoreticallyexactgeometricalreferenceestablishedfordeterminingtheorientationdeviation,locationdeviation,

run-outs,andthelikeofafeature.Forexample,wherethegeometricalreferenceisapoint,straightline,axialstraight

line(*2),plane,ormedianplane,itisreferredtoasadatumpoint,datumstraightline,d