1. 11
Profile

2. Define line and surface profile tolerances.
Apply profile tolerances to define allowable variation within a limited zone on a feature or all of a feature.
Apply profile tolerances to extend all around the profile shown in a drawing view.
Complete profile tolerance specifications to achieve any of the possible levels of control.
Sketch the tolerance zone created by profile tolerance specifications.
© Goodheart-Willcox Co., Inc.

3. Draw a composite profile tolerance specification.
Identify profile tolerances as the means for specifying allowable variation for conical surface form, orientation, and location.
Draw a composite profile tolerance specification.
© Goodheart-Willcox Co., Inc.

4. Profile Specification
Line profile
Surface profile
Same feature control frame format
Different symbols
No diameter symbol for the tolerance
Applied RFS
© Goodheart-Willcox Co., Inc.

5. Line Profile Control single line elements on a feature
Each element is independent of all others
Control is only parallel to the profile to which the tolerance is applied
© Goodheart-Willcox Co., Inc.

6. Line Profile Application
© Goodheart-Willcox Co., Inc.

7. Surface Profile Control all elements on a feature
When applied to one surface on a feature of size, the size tolerance also affects the surface requirements
Simplest level of control, controls form only
© Goodheart-Willcox Co., Inc.

8. Surface Profile Application
© Goodheart-Willcox Co., Inc.

9. Limits of Application Unless specified, applicable to entire surface
All around profile
All over profile
Defined limit
© Goodheart-Willcox Co., Inc.

10. Profile Application across the Feature
© Goodheart-Willcox Co., Inc.

11. Profile Application between Noted Limits
© Goodheart-Willcox Co., Inc.

12. All Around Application
Symbol is similar to welding all around
Only applies to the feature as seen in toleranced view
© Goodheart-Willcox Co., Inc.

13. All Over Application Applies to all features of a part
May apply additional tolerances
© Goodheart-Willcox Co., Inc.

14. Profile Directions Bidirectional profile tolerance
Centered on true profile
Unequally distributed profile tolerance
Unidirectional profile tolerance applied to more material
Unidirectional tolerance applied to less material
Unequal disposed tolerance applied to allow more or less material
© Goodheart-Willcox Co., Inc.

15. Achievable Levels of Control
© Goodheart-Willcox Co., Inc.

16. Control of Form Only
Other tolerances must establish location and orientation
Profile tolerance must not contain datum feature reference
© Goodheart-Willcox Co., Inc.

17. Control of Form, Orientation, Location
Surface is located by basic dimensions
Datum references included
© Goodheart-Willcox Co., Inc.

18. Coplanarity, Orientation, and Location
All contained in one tolerance
Profile tolerances control location, orientation, and coplanarity if the features are:
Form defined by basic dimensions
Location defined with a basic dimension
Datum references are shown
© Goodheart-Willcox Co., Inc.

19. Coplanarity, Orientation, and Location (Cont.)
© Goodheart-Willcox Co., Inc.

20. Profile Applied to Conical Surfaces
© Goodheart-Willcox Co., Inc.

21. Composite Profile Tolerances
Form tolerances tighter than location or orientation tolerances
Datum references in first segment constrain translational and rotational degrees of freedom
Second segment constrains only rotational
© Goodheart-Willcox Co., Inc.

22. Composite Profile All Around
© Goodheart-Willcox Co., Inc.

23. Profile and Position Tolerances Combined
© Goodheart-Willcox Co., Inc.

24. Composite Profile for Pattern of Features
Multiple features that form a single pattern
First segment: pattern-locating tolerance zone framework
Second segment: defines feature-relating tolerance zone framework
© Goodheart-Willcox Co., Inc.

25. Bidirectional profile tolerance
A profile tolerance that extends equally in each direction relative to the perfect profile of the feature.
Unidirectional profile tolerance
A profile tolerance that extends in one direction relative to the perfect profile of the feature. Specified as an unequally disposed profile tolerance.
© Goodheart-Willcox Co., Inc.