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Transcript of Dimensioning with SolidWorks - Demo - Autumn 2014 · •Engineering 1182 College of Engineering...
• Engineering 1182
College of Engineering
Engineering Education Innovation Center
Dimensioning with SolidWorks - Demo
Part 1
Dimensioning in SolidWorks 1
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.
Rev: 2014-07-13 - RCB
• Engineering 1182
Formal Drawings
Formal Drawing
Components:
1. Extracted Drawings
• Extracted Views
• Detailed Features
• Title Block
2. Dimensions
• Size and Type of Features
Rev: 20140114, AJP Dimensioning in SolidWorks 2
Definition: Detailed multi-
view representations of a
finished part
• Engineering 1182
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.
Dimensioning in SolidWorks 3Rev: 20140114, AJP
• Engineering 1182
Basic Dimensioning
Rev: 20140114, AJP Dimensioning in SolidWorks 4
.75
2
2
Overall
Size
Features
Size and
Location
.75
2
2
.25
1
• Engineering 1182
Basic Dimensioning Arcs and Circles
Rev: 20140114, AJP Dimensioning in SolidWorks 5
.5
1R1
.5
1R1
Ø1
Overall
Size
Features
Size and
Location
• Engineering 1182
Baseline versus Chain Dimensioning
Rev: 20140114, AJP Dimensioning in SolidWorks 6
Baseline Dimensioning Chain Dimensioning
• There are many ways to use
dimensions to locate features.
• Chain
• Baseline
(Both techniques are acceptable, however
baseline dimensions are preferred.)
• Engineering 1182
SolidWorks: Adding Dimensions, Center Marks
and Center Lines
Dimensioning in SolidWorks 7
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.
Rev: 2014-07-13 - RCB
• Engineering 1182
Opening the Drawing for Dimensioning
Dimensioning in SolidWorks 8
Use My_Dimensioning_Demo_Drawing from the
Extracting Drawing Demo if the drawing was
completed in the previous demo or,
if not completed, exit out of both
Extracting_Drawing_Demo files and retrieve both
Dimensioning_Demo_Part.SLDPRT and
Dimensioning_Demo_Drawing.SLDDRW from the
SolidWorks-8 EEIC website within the Instructors
Demo – Dimensioning Part 1..nstructor's Demo -
Dimensioning Part 1openolidWorks-7
websiteolidWork-7 EEIC websitSolidWork-7 EEIC
Rev: 2014-07-13 - RCB
• Engineering 1182
Setting the Dimesioning Precision
Dimensioning in SolidWorks 9Rev: 2014-07-13 - RCB
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.
Tools / Options
• Engineering 1182
Establish the Overall Size (Height, Width & Depth)
using Smart Dimension
Dimensioning in SolidWorks 10Rev: 2014-07-13 - RCB
Height
Width Depth
Usually one dimensions between center
points of circles in a symmetrical object
• Engineering 1182
Size and Locate the Holes
Dimensioning in SolidWorks 11
Note that the location has already been established by the
Symmetry note and the hole center point separation 8 inches
Rev: 2014-07-13 - RCB
• Engineering 1182
Size and Locate the Other Features
Dimensioning in SolidWorks 12Rev: 2014-07-13 - RCB
Note that the following Dimensioning Guidelines have been followed:
1. Dimensions are located in the "Characteristic View"
2. Positive cylinders are dimensioned where they appear as rectangles
3. Negative cylinders are dimensioned where they appear as circles
4. Dimensions are generally located between Orthographic Views
5. Object is not OVER DIMENSIONED (no more dimensions allowed!)
• Engineering 1182
Dimensioning Wrap Up
Rules of Dimensioning
1. Overall size in all 3
dimensions
2. Size and location of all
features in all 3
dimensions
Rev: 20140114, AJP Dimensioning in SolidWorks 13
Homework Assignment
Problem 6.4 (qq)
Model part and create 2D
Drawings with all necessary
formatting (dimension in next
class)
• Engineering 1182
In-Class Assignment
Rev: 20141204, RCB Dimensioning in SolidWorks 14
Before starting the
dimensioning assignments,
the instructor should open
each sketch of the
EXTRACTION IN-CLASS
assignment and make add the
constraints shown on the
following slides so that each
sketch is FULLY DEFINED
• Engineering 1182
Fully Define Part
Rev: 20141204, RCB Dimensioning in SolidWorks 15
Add
tangencies
Add sizes
• Engineering 1182
Fully Define Part
Rev: 20141204, RCB Dimensioning in SolidWorks 16
OK
Add vertical to
construction
line(initially SYMMETRIC)