1. Dimensioning with SolidWorks - Demo
Although most demos are implemented with word documents, this demo employs slides so that more details can be shown to the students as the drawing is constructed.
Part 1
Since Dimensioning is one of the more difficult concepts introduced in 1182, the resulting dimensioned file produced by this instructor led DEMO is not recommended as an optional in class assignment since the student will benefit by doing the in class assignment on the EEIC website on their own.
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Dimensioning in SolidWorks

2. Dimensioning in SolidWorks
Formal Drawings
Definition: Detailed multi-view representations of a finished part
Formal Drawing Components:
Extracted Drawings
Extracted Views
Detailed Features
Title Block
Dimensions
Size and Type of Features
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Dimensioning in SolidWorks

3. Dimensioning in SolidWorks
Basic Dimensioning
Dimensioning is used to define an object so that it could be manufactured and must:
Define the overall size of the part in all 3 dimensions.
Define the size and location of the features of the part in all 3 dimensions.
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Dimensioning in SolidWorks

4. Basic Dimensioning 2 2 Overall Size Features Size and Location 1 2 2
.75
.75 2 2
Overall Size
Features Size and Location
.25 1 2 2
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Dimensioning in SolidWorks

5. Basic Dimensioning Arcs and Circles.5 .5
Overall Size
Features Size and Location 1 1 R1 R1 Ø1
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Dimensioning in SolidWorks

6. Baseline versus Chain Dimensioning
There are many ways to use dimensions to locate features.
Chain
Baseline
(Both techniques are acceptable, however baseline dimensions are preferred.)
Chain Dimensioning
Baseline Dimensioning
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Dimensioning in SolidWorks

7. SolidWorks: Adding Dimensions, Center Marks and Center Lines
Dimensions can be added using the “Smart Dimension” feature
Notes can be added to reduce the number of dimensions by stating symmetry or identifying fillet radii
Note that sometimes the Isometric needs to be re-scaled to allow adequate drawing space which requires a NOTE.
Notes can be used to describe Symmetry or radii of curvature, etc.
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Dimensioning in SolidWorks

8. Opening the Drawing for Dimensioning
Open Dimensioning_Demo.SLDPRT & SLDDRW from the SolidWorks 8 EEIC website as shown above.bsitSolidWork-7 EEIC
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Dimensioning in SolidWorks

9. Setting the Dimensioning Precision
Tools / Options
Since the drawing we are dimensioning is in INCHES, 2 numbers to the right of the decimal point are sufficient for this drawing. Click OK to save.
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Dimensioning in SolidWorks

10. Dimensioning in SolidWorks
Establish the Overall Size (Height, Width & Depth) using Smart Dimension
Width
Depth
IMPORTANT
Usually one dimensions between center points of circles in a symmetrical object
Height
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Dimensioning in SolidWorks

11. Size and Locate the Holes
Note that the location has already been established by the Symmetry note and the hole center point separation  8 inches
Using SYMMETRY simplifies:
Construction &
Dimensioning
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Dimensioning in SolidWorks

12. Size and Locate the Other Features
Note that the following Dimensioning Guidelines have been followed:
Dimensions are located in the "Characteristic View"
Positive cylinders are dimensioned where they appear as rectangles
Negative cylinders are dimensioned where they appear as circles
Dimensions are generally located between Orthographic Views
Object is not OVER DIMENSIONED (no more dimensions allowed!)
Note that since dimensioning is one of the more difficult exercises, it is NOT recommended that the completed dimensioned drawing be optionally submitted for the in-class assignment. The provided in-class assignment provides the needed student practice in dimensioning.
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Dimensioning in SolidWorks

13. The Dimensioning Guidelines
Very Important
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Dimensioning in SolidWorks

14. Dimensioning in SolidWorks
Dimensioning Wrap Up
Homework Assignment Problem 6.4 (qq) Model part and create 2D Drawings with all necessary formatting (dimension in next class)
Rules of Dimensioning
Overall size in all 3 dimensions
Size and location of all features in all 3 views always using a features CHARACTERISTIC VIEW
Note that these dimensions do not reference the BOTTOM of the object
CAUTION: Do not add high-lighted fillets in order to eliminate difficulty in dimensioning.
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Dimensioning in SolidWorks

15. Two Options for Out of Class Home Work
Want to reduce your construction effort ?
Consider MIRRORING!
Option 1
Option 2
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Dimensioning in SolidWorks

16. In-Class Assignment Open the following document:
“Dimensioning Part 1-InClass Assignment”
and add dimensions to the following 4 shapes.
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Dimensioning in SolidWorks