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Image courtesy of National Optical Astronomy
Observatory, operated by the Association of Universities
for Research in Astronomy, under cooperative
agreement with the National Science Foundation.
Teaching SolidWorks Software
Lesson 4
Peters Township High School
Mr. Burns & Mr. Walsh
CADD Online

2
Features Used to Build Tutor2
1.Base Extrude 2.Fillets
3.Shell 4.Cut Extrude

3
Sketch for Cut Feature
 Sketch is composed of two curves.
– Convert Entities creates the outside curve.
– Offset Entities creates the inside curve.
 Rather than drawing the outlines by hand, they are
“copied” from existing geometry.
 This technique is:
– Fast and easy– select the face and click the tool.
– Accurate – sketch entities are “cloned” directly from existing
geometry.
– Intelligent – if the solid body changes shape, the sketch updates.
Automatically.

4
Convert Entities
 Copies one or more curves into the active sketch by
projecting them onto the sketch plane.
 Curves can be:
– Edges of faces
– Entities in other sketches
 Easy and fast
– Select the face or curve.
– Click the tool.

5
To Create the Outside Curve:
1. Select the sketch plane.
2. Open a new sketch.
3. Select the face or curves
you want to convert.
In this case, select the
face.
4. Click Convert Entities
on the Sketch toolbar.

6
Creating the Outside Curve:
5. Outside edges of face are copied into the active
sketch.
6. Sketch is fully defined – no dimensions needed.

7
To Create the Inside Curve:
1. Click Offset Entities on the
Sketch toolbar.
The PropertyManager opens.
2. Enter the distance value of 2mm.
3. Select one of the converted
entities.
4. The Select chain option causes
the offset to go all the way
around the contour.

8
Creating the Inside Curve:
5. The system generates a preview
of the resulting offset.
6. A small arrow points toward
the cursor. If you move your
cursor to the other side of the
line , the arrow changes
direction. This indicates on which side
the offset will be created.
7. Move the cursor so it is inside the
contour. Click the left mouse button to
create the offset.

9
Creating the Inside Curve:
8. The resulting sketch is fully
defined.
9. There is only one
dimension. It controls the
offset distance.

10
Tutor Assembly
 The Tutor assembly is
comprised of two parts:
– Tutor1 (created in Lesson 2)
– Tutor2 (created in this
lesson)

11
Assembly Basics
 An assembly contains two or more parts.
 In an assembly, parts are referred to as components.
 Mates are relationships that align and fit components
together in an assembly.
 Components and their assembly are directly related
through file linking.
 Changes in the components affect the assembly.
 Changes in the assembly affect the components.

12
To create the Tutor assembly:
1. Open a new
assembly
document
template.
2. Open Tutor1.
3. Open Tutor2.
4. Arrange the
windows.

13
Creating the Tutor assembly:
5. Drag and
drop the
part icons
into the
assembly
document.
Save the
assembly
as Tutor.

14
Assembly Basics
 The first component placed into
an assembly is fixed.
 A fixed component cannot move.
 If you want to move a fixed
component, you must
Float (unfix) it first.
 Tutor1 is added to the FeatureManager design tree with
the symbol (f).
 The symbol (f) indicates a fixed component.

15
Assembly Basics
 Tutor2 is added to the
FeatureManager design tree
with the symbol (-).
 The symbol (-) indicates an
underdefined component.
 Tutor2 is free to move and rotate.

16
Manipulating Components
 Move components by dragging.
 Move components with a triad.
 Move Component – translates
(moves) the selected component
according to its available degrees
of freedom.

17
Manipulating Components
 Rotate components by dragging.
 Rotate components with a triad.
 Rotate Component – rotates the
selected component according to
its available degrees of freedom.

18
Degrees of Freedom: There are Six
 They describe how an
object is free to move.
 Translation (movement)
along X, Y, and Z axes.
 Rotation around X, Y, and
Z axes.

19
Mate Relationships
 Mate relationships align and fit together components
in an assembly.
 The Tutor assembly requires three mates to fully
define it.
The three mates are:
 Coincident between the top
back edge of Tutor1 and
the edge of the lip on Tutor2.
Tutor1
Tutor2
Edges

20
Mate Relationships
 Second Mate: Coincident
mate between the right face
of Tutor1 and the right face
of Tutor2.
 Third Mate: Coincident mate
between the top face of
Tutor1 and the top face
of Tutor2.

21
Mates and Degrees of Freedom
 The first mate removes all
but two degrees of
freedom.
 The remaining degrees of
freedom are:
– Movement along the edge.
– Rotation around the edge.

22
 The second mate removes one more degree of freedom.
 The remaining degree of freedom is:
– Rotation around the edge.

23
 The third mate removes last degree of freedom.
 No remaining degrees of freedom.
 The assembly is fully defined.

24
Additional Mate Relationships for Exercises and
Projects
 The switchplate requires two fasteners.
 Create the fastener.
 Create the switchplate-fastener assembly.

25
Projects
 The switchplate-fastener assembly requires three mates
to be fully defined. The three mates are:
 First Mate:
Concentric mate
between the cylindrical
face of the fastener and
the cylindrical face of
the switchplate.

26
Projects
 Second Mate:
Coincident mate between
the flat circular back face of
the fastener and the flat
front face of the switchplate.
Faces

27
Projects
 Third Mate:
Parallel mate between the
flat cut face of the fastener
and the flat top face of the
switchplate.
 The switchplate-fastener
assembly is fully defined.
Faces

28
Projects
 The cdcase-storagebox assembly requires three
mates to be fully defined. The three mates are:
 First Mate:
Coincident between
the inside bottom face
of the storagebox and
the bottom face of
the cdcase.
Faces

29
Projects
 Second Mate:
Coincident mate between
the inside back face of
the storagebox and the
back face of the cdcase.
Faces
Inside back face

30
Projects
 Third Mate:
Distance mate between the inside left face of the
storagebox and the left face of the cdcase.
 Distance = 1cm.
 Good job! Now,
would you like to do
this 24 more times?
No!
Faces

31
Component Pattern
 A Component pattern is
a pattern of components
in an assembly.
 The Component pattern
copies the Seed
Component.
 The Seed Component
in this example is the cdcase.
 This eliminates the work of adding and mating each
cdcase individually.

32
To Create a Linear Component Pattern:
1. Click
Insert, ComponentPattern,
LinearPattern.

33
Creating a Linear Component Pattern:
2. Select the cdcase as the
Components to Pattern.
3. Select the front edge of the
storagebox for
Pattern Direction.
4. Spacing = 1cm
5. Instances = 25
6. Click OK.

34
More to Explore: The Hole Wizard
 What determines the size of the
hole?
– The size of the fastener
– The desired amount of clearance
 Normal
 Close
 Loose

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