geometric dimensioning and tolerancing profile of a surface

... 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

... 202 Chapter 13. Graphic Analysis 207 Chapter Objectives 207 Advantages of Graphic Analysis 207 The Accuracy of Graphic Analysis 208 Analysis of a Composite Geometric Tolerance 209 Analysis of a Pattern ... language of GD&T in a way that the learner can understand and use it in practical applications. It is intended as a textbook to be used in colleges and universities and as a training manual ... in accordance with the latest revision of the geometric dimensioning and tolerancing standard, ASME Y14.5M-1994. GD&T is a graphic language. To facilitate understanding, there is at least...

Ngày tải lên: 05/08/2014, 09:20

... 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. It is intended as a textbook to be used in colleges and ... universities and as a training manual for corporate training programs that teach engineering, design, drafting, manufacturing, and quality professionals. This book is also appropriate for a self-study ... 195 Summary 199 Chapter Review 200 Problems 202 Chapter 13. Graphic Analysis 207 Chapter Objectives 207 Advantages of Graphic Analysis 207 The Accuracy of Graphic Analysis 208 Analysis of a Composite...

Ngày tải lên: 05/08/2014, 09:20

... as  Setup and stability of the part  Quality and sharpness of tooling  Quality and maintenance of machine tools  Excessive clamping  Size of the part  The material the part is made from  Heat ... on a drawing are shown at right angles and no angle is specified. 6. A basic 90 ◦ angle applies where centerlines of features in a pattern or surfaces shown at right angles on a drawing are located ... Even a corner of the feature control frame may be attached to an extension line extending from a surface at an angle to the horizontal plane. A feature control frame may be placed beneath a dimension...

Ngày tải lên: 05/08/2014, 09:20

... as  Setup and stability of the part  Quality and sharpness of tooling  Quality and maintenance of machine tools  Excessive clamping  Size of the part  The material the part is made from  Heat ... Related Features SYMMETRY CONCENTRICITY POSITION Symbol STRAIGHTNESS FLATNESS CIRCULARITY CYLINDRICITY PROFILE OF A LINE PROFILE OF A SURFACE Geometric Characteristics ANGULARITY PERPENDICULARITY PARALLELISM CIRCULAR RUNOUT TOTAL RUNOUT Runout Location Orientation Related Features Profile Form Type ... dimensioning and tolerancing on CAD/CAM database models Fundamental Drawing Rules Dimensioning and tolerancing shall clearly define engineering intent and shall conform to the following rules: 9 Downloaded...

Ngày tải lên: 05/08/2014, 09:20

... 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 ... geometric characteristics of features of a part are established. Part Datum Feature Simulator (Surface plate) Datum Feature Theoretically Exact Datum Plane Datum Plane Simulated Datum Figure 3-17 The ... the spaces on Fig. 3-25. 32. What is the name of a physical portion of a part, such as a surface, pin, hole, tab, or slot? 33. What is the name of a feature that has a dimension such as a cylindrical...

Ngày tải lên: 05/08/2014, 09:20

... in a straight line. Two datum targets are used to establish a secondary datum plane. And one datum target establishes a tertiary datum plane. A combination of datum target points, lines, and areas ... datum features at an angle to the datum ref- erence frame is to place a datum feature symbol on the and control that surface with an angularity tolerance and a basic angle. 14. A is always intersected ... feature axis where datum A is no more important than datum B and datum B is no more important than datum A. When a cylinder is specified as a datum, such as datums A and B, the entire surface of the...

Ngày tải lên: 05/08/2014, 09:20

... of a median line and of a median plane, all form tolerances are surface controls and are attached to feature surfaces with a leader or, in some cases, an extension line. No cylindrical tolerance ... for a surface of revolution about an axis and the other for a sphere. Circularity is a condition of a surface:  For a surface of revolution, all points on the surface intersected by a plane perpendicular ... elements on that surface are in one . 8. In a view where the surface to be controlled with a flatness tolerance ap- pears as a a feature control frame is attached to the surface with a . Downloaded from...

Ngày tải lên: 05/08/2014, 09:20

... tolerance may be specified as a refinement. Except for straightness of a median line and of a median plane, all form tolerances are surface controls and are attached to feature surfaces with a leader ... to  Specify and interpret flatness  Specify and interpret straightness  Explain the difference between straightness of a surface and straightness of a median line or median plane  Specify and interpret ... straightness verification of a size feature specified at MMC can be achieved by placing the part in a full form functional gage, as shown in Fig. 5-7. If a part goes all the way in the gage and satisfies...

Ngày tải lên: 05/08/2014, 09:20

... 6-10 Specifying an angularity tolerance for a plane surface at a basic angle to a plane surface. Specifying angularity of a flat surface In a view where the surface to be controlled appears as a line, a feature control ... datum planes or a datum axis. Specifying parallelism of a flat surface In a view where the surface to be controlled appears as a line, a feature control frame is attached to the surface with a ... plane that is at a 90 ◦ angle to a datum plane or datum axis. Specifying perpendicularity of a flat surface In a view where the surface to be controlled appears as a line, a feature control frame...

Ngày tải lên: 05/08/2014, 09:20

... 6-10 Specifying an angularity tolerance for a plane surface at a basic angle to a plane surface. Specifying angularity of a flat surface In a view where the surface to be controlled appears as a line, a feature control ... parallel planes .010 apart. Surface Plate .010 30° 30° Figure 6-11 Verification of a surface at a 30 ◦ angle to a flat datum surface. Specifying angularity of an axis When controlling the angularity ... datum planes or a datum axis. Specifying parallelism of a flat surface In a view where the surface to be controlled appears as a line, a feature control frame is attached to the surface with a...

Ngày tải lên: 05/08/2014, 09:20

... can reject a marginally good part. Shift Tolerance Shift tolerance is allocated to a feature or a pattern of features, as a group, and equals the amount a datum feature of size departs from MMC ... General 119  A shift tolerance is allocated to a feature or a pattern of features, as a group, and equals the amount a datum feature of size departs from MMC or virtual condition toward LMC. It ... between the actual feature size and MMC.  Bonus plus geometric tolerance equals total positional tolerance. TABLE 7-1 The Calculation of Bonus Tolerance Actual Total feature Geometric positional size...

Ngày tải lên: 05/08/2014, 09:20

... tolerance is allocated to a feature or a pattern of features, as a group, and equals the amount a datum feature of size departs from MMC or virtual Downloaded from Digital Engineering Library ... condition. As the actual size of a datum feature departs from MMC toward LMC, a , of the pattern as a group, is allowed in the exact amount of such departure. 20. The states that where a da- tum feature ... General 119  A shift tolerance is allocated to a feature or a pattern of features, as a group, and equals the amount a datum feature of size departs from MMC or virtual condition toward LMC. It...

Ngày tải lên: 05/08/2014, 09:20

... .006 cylindrical tolerance zones framework can float, as a pattern, in any direction and rotate about an axis, perpendicular to datum A. A portion of a smaller tolerance zone may fall outside of its ... The largest hole that will fit under the head of a fastener is the sum of half of the diameter of the fastener and half of the diameter of the fastener head, or the distance across the flats of the ... parallel to and located with a basic dimension from datum plane A, centered on datum axis B, and clocked to datum center plane C. Since datums B and C are size features and specified at MMC, a shift...

Ngày tải lên: 05/08/2014, 09:20

Ngày tải lên: 05/08/2014, 09:20

Ngày tải lên: 05/08/2014, 09:20

Ngày tải lên: 05/08/2014, 09:20

Ngày tải lên: 05/08/2014, 09:20

Ngày tải lên: 05/08/2014, 09:20