工廠生產(chǎn)及質(zhì)量培訓(xùn)——形位公差理念-文庫吧資料
2025-03-28 07:57本頁面
【正文】 fsize. Definition ? 實際被測要素 (線要素 )對理想直線的允許變動 . A straightness tolerance is the amount which line elements are permitted to vary from a true line. 30 Straightness Straightness of Features 31 Straightness Straightness of Featureofsize 32 Straightness Straightness of Featureofsize(MMC) 33 Circularity ? 在同一正截面上 .半徑差為圓度公差值的同心圓之間的區(qū)域 . A circularity tolerance zone is two concentric circles spaced apart a radial distance equal to the circularity tolerance value. Definition ? 實際被測要素對理想圓的允許變動 . A circularity tolerance is the amount which surface elements of the diameter may vary from a theoretical circle. 34 Circularity Application 35 Cylindricity ? 半徑差為圓柱度公差值的兩同軸圓柱面之間的區(qū)域 . A cylindricity tolerance zone is two concentric cylinders spaced apart a radial distance equal to the cylindricity tolerance value. Definition ? 實際被測要素對理想圓柱的允許變動 . A cylindricity tolerance is the amount which surface elements of a cylinder may be allowed to vary from a theoretically perfect cylinder. 36 Application Cylindricity 37 Controls 38 Perpendicularity A perpendicularity tolerance is the amount which a surface, or axis, or centerplane is permitted to vary from being perpendicular to the datum. 39 Perpendicularity Applied to a surface or a planar featureofsize 40 Perpendicularity Applied to a diameter (in one direction only) 41 Perpendicularity Applied to the axis of a diameter 42 Perpendicularity Applied to a surface line element 43 Angularity ? An angularity tolerance is the amount which a surface, centerplane, or axis is permitted to vary from its specified exact angle. ? An angularity control has a different tolerance zone depending upon its application. 44 Angularity Applied to a surface or a planar featureofsize 45 Angularity Applied to an axis 46 Parallelism ? A parallelism tolerance is the amount which a surface, centerplane, or axis is permitted to vary from the parallel state. ? A parallelism tolerance zone is two parallel planes or a cylinder depending upon its application. 47 Parallelism Parallel planes as a tolerance zone 48 Parallelism A cylinder as a tolerance zone 49 3. Location Controls Location contro
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