geometric dimensioning and tolerancing profile of a surface

... coaxiality of the holes to one another within the tighter tolerance The smaller tolerance zone may float up and down, back and forth, and at any angle to datums A and B Portions of the smaller ... at maximum material condition, least material condition, or regardless of feature size At least one datum must be specified in the feature control frame When a coaxiality tolerance and a datum ... Tolerance Size of feature Size of datum 2.003 2.002 2.001 2.000 Composite Positional Control of Coaxial Features A composite positional tolerance may be applied to a pattern of coaxial features

Ngày tải lên: 05/08/2014, 09:20

... constructed around a datum axis and surfaces constructed perpendicular to a datum axis Runout controls several characteristics of surfaces of revolution, such as coaxiality and circu-larity, as that surface ... a datum axis, cir-cular runout controls a combination of variations in circir-cularity and coaxiality Where applied to surfaces at a 90◦angle to a datum axis, circular runout con-trols variations ... Where applied to surfaces constructed around a datum axis, total runout controls a combination of coaxiality, circularity, straightness, angularity, taper, and pro-file variations of the surface

Ngày tải lên: 05/08/2014, 09:20

... size and shape of the profile can be used  A thickness gage can be used to measure variations between a template, made to the true size and shape of the profile, and the actual surface  An open ... inappropriate The profile feature con-trol frame contains the profile of a line or of a surface symbol and a tolerance Since profile controls are surface controls, cylindrical tolerance zones and ... coplanar surfaces parallel to a datum. Trang 8parallel to datum A Coplanarity of two or more surfaces specified with a profile tolerance including a datum, which identifies a parallel surface, is

Ngày tải lên: 05/08/2014, 09:20

... tolerance  Perform inspection analysis of a pattern of features controlled to a datum feature of size Advantages of Graphic Analysis The graphic analysis approach to gaging has many advantages ... graphic analysis: The accuracy of graphic analysis is affected by such factors as the accu-racy of the graphs and overlay gage, the accuaccu-racy of the inspection data, the Trang 12completeness of ... Analysis The overall accuracy of graphic analysis is affected by such factors as the ac-curacy of the graph and overlay gage, the acac-curacy of the inspection data, the completeness of the inspection

Ngày tải lên: 05/08/2014, 09:20

... datum The primary datum is often a large flat surface that mates with another part, but many parts do not have flat surfaces A large, functional, cylindrical surface may be selected as a primary ... use of a gage sketch A Pattern of Features Located to a Second Pattern of Features Individual features and patterns of features may be toleranced to patterns of features and individual size features ... located to a datum feature of size and clocked to a flat surface. Trang 9flat on the outside diameter has been designated as datum C and specifiedas the tertiary datum in the feature control frame,

Ngày tải lên: 05/08/2014, 09:20

... terms of use. Trang 2248 AppendixTABLE A-2 Machine and Cap Screw Sizes A Hex head machine screws A Socket head cap screws A Round head machine screws ∗Clearance Hole Ø @ LMC is calculated ... Nonparallel holes, 139 Orientation, 18, 87 Oversize diameters in drilling, 247 Paper gaging See Graphic analysis Parallelism, 88 Partial runout, 179 Partial surface as a datum feature, 58 Pattern ... a surface, 188 Spherical diameter (SØ), 28 Spherical radius (SR), 28 Spotface, 27 Square symbol, 28 Statistical tolerance, 28 Straightness of a median line and median plane, 74 Straightness of

Ngày tải lên: 05/08/2014, 09:20

... Elena V Lukashina1, Andrey N Kharlanov2, Vitaly V Nasonov3, Marina V Serebryakova4, Stanislav V Kozlovsky1, Olga V Zayakina1and Nina P Rodionova1 1 A N Belozersky Institute of Physico-Chemical ... fraction between peaks in chromatographic profile shown in Fig 3) (B) Analysis of a standard mixture containing Glc, Gal, Man, Fuc, GlcNAc, GalNAc, ManNAc (C) Analysis of peak 1 (Fig 3A) (D) Analysis ... performed MALDI MS analysis of all five peaks eluted at the beginning of the chromatogram (peaks 1*, 2*, 3*, 1 and 2 in Fig 5A) For peaks 1 and 2, molecular masses of 2025 and 2041 Da were obtained as

Ngày tải lên: 23/03/2014, 13:20

... than afamily to me here in Tucson: Nakul Chitnis; Luis Garcia-Naranjo; Adam Spiegler;Rosangela Sviercoski; Gabriella, Eleni, Alexandros and Pavlos Michaelidou; AntonioColangelo and Mariagrazia ... Papageorgiou and AnnaSidera for their continual support and the great summers I spent with them I thank my grandparents Panagiota and Charalambos Konstantinou, MariaZeniou and my spiritual father Michalis ... Pigasiou for their continual wishes andprayers; and my loving a supporting family: my mother Andreani, my father Sav-vas, my brothers Michael-Zenios and Charalambos Finally I thank the Department

Ngày tải lên: 13/11/2014, 09:14

... between a datum, a datum feature, and a datum feature simulator. 4. Datum feature: A datum feature is an actual feature on a part used to establish a datum. 5. Datum feature simulator: A datum feature ... human error, the major cause of part variation occurs as a result of a variety of other sources, such as  Setup and stability of the part  Quality and sharpness of tooling  Quality and maintenance ... dimensioning and tolerancing (GD&T). The primary purpose of this book is to teach the graphic language of GD&T in a way that the learner can understand and use it in practical applications....

Ngày tải lên: 23/01/2014, 04:20