tailieunhanh - Dimensioning and Tolerancing Part 13

Tham khảo tài liệu 'dimensioning and tolerancing part 13', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | DIMENSIONING AND TOLERANCING ASME THIS ON THE DRAWING I THIS ON THE DRAWING The surface must He between two parallel planes apart which are perpendicular to datum plane A. The surface must be within the specified limits of size. Where the feature is at maximum material condition the maximum parallelism tolerance Is diameter. Where the feature departs from Its MMC size an increase in the parallelism tolerance Is allowed which is equal to the amount of such departure. The leature axis must be within the specified tolerance of location. FIG. 6-34 SPECIFYING PERPENDICULARITY FOR A PLANE SURFACE FIG. 6-33 SPECIFYING PARALLELISM FOR AN AXIS FEATURE AT MMC AND DATUM FEATURE RFS 1RI ASN E DIMENSIONING AND TOLERANCING THIS ON THE DRAWING The surface must lie between two parallel planes apart which are perpendicular to datum planes A and B. The surface must be within the specified limits of size. FIG. 6-35 SPECIFYING PERPENDICULARITY FOR A PLANE SURFACE RELATIVE TO TWO DATUMS 182 DIMENSIONING AND TOLERANCING ASME THIS ON THE DRAWING MEANS THIS Regardless of feature size the feature center plane must lie between two parallel planes apart which are perpendicular to datum plane A. The feature center plane must be within the specified tolerance of location. Regardless of feature size the feature axis must lie between two parallel planes apart which are perpendicular to datum axis A. The feature axis must be within the specified tolerance of location. Note This applies only to the view on which II Is specified. FIG. 6-37 SPECIFYING PERPENDICULARITY FOR AN AXIS BOTH FEATURE AND DATUM FEATURE RFS FIG. 6-36 SPECIFYING PERPENDICULARITY FOR A CENTER PLANE FEATURE RFS ĨR