Geometric Dimensioning and Tolerancing Other geometric tolerances profile

Flatness • Flatness is the condition of a surface where all elements are in

Flatness • The surface could be checked by translating the part under a dial

Perpendicularity • Perpendicularity is the condition of an entire surface, plane, or axis at

Angularity • Angularity is the condition of an axis or plane other than 90

Parallelism • Parallelism is the condition of a surface, center plane, or axis that

Parallelism • Example of a cylinder being parallel to another surface. EML 2023 Department

Parallelism • Example of a cylinder being parallel to another cylinder. EML 2023 Department

Circular Runout and Total Runout • The worst circular runout occurs at the slice

Circularity vs. Runout • Can anyone explain the difference between the two and can

HOLE BAR C 1. 500 . 750 ±. 005 B 2. 500. 758. 750.

HOLE BAR C 1. 500. 005 A. 750 ±. 005 B 2. 500. 758.

HOLE BAR C. 005 A B 1. 500. 005 A. 750 ±. 005 B

HOLE BAR C. 005 A B 1. 500. 005 A B 2. 500 2

HOLE BAR C. 005 A B 1. 500 . 005 A. 750 ±. 005

HOLE BAR C. 005 A B 1. 500 1. 200. 500 . 005 A.

HOLE BAR C. 005 A B 45° 1. 500 1. 200. 500 . 005

HOLE BAR C R. 750 . 005 A B 45° 1. 500 1. 200.

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Geometric Dimensioning and Tolerancing Other geometric tolerances: • • • profile runout & total runout flatness angularity perpendicularity parallelism

Geometric Characteristics Form, Orientation, Profile, and Runout Tolerances EML 2023 Department of Mechanical and Aerospace Engineering 2

Flatness • Flatness is the condition of a surface where all elements are in one plane. EML 2023 Department of Mechanical and Aerospace Engineering 3

Flatness • The surface could be checked by translating the part under a dial indicator. EML 2023 Department of Mechanical and Aerospace Engineering 4

Geometric Characteristics Form, Orientation, Profile, and Runout Tolerances EML 2023 Department of Mechanical and Aerospace Engineering 5

Perpendicularity • Perpendicularity is the condition of an entire surface, plane, or axis at a right angle to a datum plane or axis. EML 2023 Department of Mechanical and Aerospace Engineering 6

Perpendicularity • Perpendicularity is the condition of an entire surface, plane, or axis at a right angle to a datum plane or axis. EML 2023 Department of Mechanical and Aerospace Engineering 7

Geometric Characteristics Form, Orientation, Profile, and Runout Tolerances EML 2023 Department of Mechanical and Aerospace Engineering 8

Angularity • Angularity is the condition of an axis or plane other than 90 degrees to another datum plane or axis. EML 2023 Department of Mechanical and Aerospace Engineering 9

Geometric Characteristics Form, Orientation, Profile, and Runout Tolerances EML 2023 Department of Mechanical and Aerospace Engineering 10

Parallelism • Parallelism is the condition of a surface, center plane, or axis that is an equal distance at all points from a datum plane or axis. bilateral tolerance zone EML 2023 Department of Mechanical and Aerospace Engineering 11

Parallelism • Example of a cylinder being parallel to another surface. EML 2023 Department of Mechanical and Aerospace Engineering 12

Parallelism • Example of a cylinder being parallel to another cylinder. EML 2023 Department of Mechanical and Aerospace Engineering 13

Geometric Characteristics Form, Orientation, Profile, and Runout Tolerances EML 2023 Department of Mechanical and Aerospace Engineering 14

Profile of a surface • Profile tolerance is specified for designs where the surface is to be controlled within a given basic shape. • Specified for irregular features that are difficult to control with other form or orientation tolerances. EML 2023 Department of Mechanical and Aerospace Engineering 15

Profile of a surface EML 2023 Department of Mechanical and Aerospace Engineering 16

Geometric Characteristics Form, Orientation, Profile, and Runout Tolerances EML 2023 Department of Mechanical and Aerospace Engineering 17

Circular Runout and Total Runout • The worst circular runout occurs at the slice with the greatest variation (0. 03 mm in this case). • Total runout is the difference between the highest and lowest readings found over the entire feature. (0. 11 mm in this case). EML 2023 Department of Mechanical and Aerospace Engineering 18

Circularity vs. Runout • Can anyone explain the difference between the two and can they be used on a print interchangeabilty? • http: //www. eng-tips. com/viewthread. cfm? qid=186399 • tp: //communities. ptc. com/message/173195 EML 2023 Department of Mechanical and Aerospace Engineering 20

Geometric Characteristics Form, Orientation, Profile, and Runout Tolerances EML 2023 Department of Mechanical and Aerospace Engineering 21

GDT Example Problem 1. 0 45º 3. 6 22

HOLE BAR C 1. 500 . 750 ±. 005 B 2. 500. 758. 750. 010 M A A B C Datum Plane A Ø. 010 Position tolerance zone at MMC Datum Plane C 1. 5 0 0 . Datum plane B 2. 5 0 0 24 3. 6

HOLE BAR C 1. 500 . 750 ±. 005 B 2. 500. 758. 750. 010 M . 005 A B C A Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C 1. 5 0 0 Datum plane B 2. 5 0 0 25 3. 6

HOLE BAR C 1. 500 . 750 ±. 005 B 2. 500. 758. 750. 010 M . 005 A A B C Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C 1. 5 0 0 . Datum plane B 2. 5 0 0 . 005 Flat zone 26 3. 6

HOLE BAR C 1. 500. 005 A. 750 ±. 005 B 2. 500. 758. 750. 010 M . 005 A A B C Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C 1. 5 0 0 . Datum plane B 2. 5 0 0 . 005 Flat zone 27 3. 6

HOLE BAR C 1. 500. 005 A. 750 ±. 005 B 2. 500. 758. 750. 010 M . 005 A A B C Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C 1. 5 0 0 . 005 Perp zone. Datum plane B 2. 5 0 0 . 005 Flat zone 28 3. 6

HOLE BAR C. 005 A B 1. 500. 005 A. 750 ±. 005 B 2. 500. 758. 750. 010 M . 005 A A B C Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C 1. 5 0 0 . 005 Perp zone. Datum plane B 2. 5 0 0 . 005 Flat zone 29 3. 6

HOLE BAR C. 005 A B 1. 500. 005 A. 750 ±. 005 B 2. 500. 758. 750. 010 M . 005 A A B C Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C. 005 Perp zone 1. 5 0 0 . 005 Perp zone. Datum plane B 2. 5 0 0 . 005 Flat zone 30 3. 6

HOLE BAR C. 005 A B 1. 500. 005 A B 2. 500 2 X . 344 . 758. 750. 010 M +. 005 -. 002 . 750 ±. 005 A A B C Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C. 005 Perp zone 1. 5 0 0 . 005 Perp zone. Datum plane B 2. 5 0 0 . 005 Flat zone 31 3. 6

HOLE BAR C. 005 A B 1. 500 . 005 A. 750 ±. 005 . 600 B 2. 500 2 X . 344 . 758. 750. 010 M +. 005 -. 002 . 005 A B C A Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C. 005 Perp zone 1. 5 0 0 Datum plane B . 6 0 0 2. 5 0 0 . 005 Perp zone. 005 Flat zone 32 3. 6

HOLE BAR C. 005 A B 1. 500 . 005 A. 750 ±. 005 . 600 B 2. 500 2 X +. 005 -. 002. 012 M A B C . 344 . 758. 750. 010 M . 005 A B C A Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C. 005 Perp zone 1. 5 0 0 Datum plane B . 6 0 0 2. 5 0 0 . 005 Perp zone. 005 Flat 2 X Ø. 012 Position zone tolerance zones at MMC. 33 3. 6

HOLE BAR C. 005 A B 1. 500 1. 200. 500 . 005 A. 750 ±. 005 . 600 B 2. 500 2 X +. 005 -. 002. 012 M A B C . 344 . 758. 750. 010 M . 005 A B C A Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C. 005 Perp zone 1. 5 0 0 1. 2 0 0 . 5 0 0 Datum plane B . 6 0 0 2. 5 0 0 . 005 Perp zone. . 005 Flat 2 X Ø. 012 Position zone tolerance zones at MMC. 34 3. 6

HOLE BAR C. 005 A B 45° 1. 500 1. 200. 500 . 005 A. 750 ±. 005 . 600 B 2. 500 2 X +. 005 -. 002. 012 M A B C . 344 . 758. 750. 010 M . 005 A B C A Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C. 005 Perp zone 1. 5 0 0 1. 2 0 0 . 5 0 0 Datum plane B . 6 0 0 2. 5 0 0 . 005 Perp zone. . 005 Flat 2 X Ø. 012 Position zone tolerance zones at MMC. 35 3. 6

HOLE BAR C R. 750 . 005 A B 45° 1. 500 1. 200. 500 . 005 A. 750 ±. 005 . 600 B 2. 500 2 X +. 005 -. 002. 012 M A B C . 344 . 758. 750. 010 M . 005 A B C A Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C. 005 Perp zone 1. 5 0 0 1. 2 0 0 . 5 0 0 Datum plane B . 6 0 0 2. 5 0 0 . 005 Perp zone. . 005 Flat 2 X Ø. 012 Position zone tolerance zones at MMC. 36 3. 6

HOLE BAR . 020 A B C C R. 750 . 005 A B 45° 1. 500 1. 200. 500 . 005 A. 750 ±. 005 . 600 B 2. 500 2 X +. 005 -. 002. 012 M A B C . 344 . 758. 750. 010 M . 005 A B C A Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C. 005 Perp zone 1. 5 0 0 1. 2 0 0 . 5 0 0 Datum plane B . 6 0 0 2. 5 0 0 . 005 Perp zone. . 005 Flat 2 X Ø. 012 Position zone tolerance zones at MMC. 37 3. 6

HOLE BAR . 020 A B C C X Y R. 750 . 005 A B 45° X 1. 500 1. 200. 500 . 005 A. 750 ±. 005 . 600 2. 500 2 X +. 005 -. 002. 012 M A B C . 344 Y B. 758. 750. 010 M . 005 A B C A Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C. 005 Perp zone 1. 5 0 0 1. 2 0 0 . 5 0 0 Datum plane B . 6 0 0 2. 5 0 0 . 005 Perp zone. . 005 Flat 2 X Ø. 012 Position zone tolerance zones at MMC. 38 3. 6

HOLE BAR . 020 A B C C X Y R. 750 . 005 A B 45° X 1. 500 1. 200. 500 . 005 A. 750 ±. 005 . 600 2. 500 2 X +. 005 -. 002. 012 M A B C . 344 Y B. 758. 750. 010 M . 005 A B C . 020 Profile zone between points X and Y. . 005 Perp zone 1. 5 0 0 1. 2 0 0 Datum plane B Datum Plane A Ø. 010 Position tolerance zone at MMC. Datum Plane C . 5 0 0 A . 6 0 0 2. 5 0 0 . 005 Perp zone. . 005 Flat 2 X Ø. 012 Position zone tolerance zones at MMC. 39 3. 6

HOLE BAR . 020 A B C C X Y R. 750 . 005 A B X 45° 1. 500 1. 200. 500 . 005 A . 600 2. 500 2 X +. 005 -. 002. 012 M A B C . 344 Y B. 758. 750. 010 M . 750 ±. 005 A B C A . 020 Profile zone between points X and Y. 1. 2 0 0 40 3. 6

Geometric Characteristics Form, Orientation, Profile, and Runout Tolerances EML 2023 Department of Mechanical and Aerospace Engineering 41