lesson4 ppt

8/14/2019 Lesson4 PPT

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SolidWorks Teacher Guide Lesson4Schools NameTeachers NameDate


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Features Used to Build Tutor2

1.Base Extrude 2.Fillets

3.Shell 4.Cut Extrude


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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, theyare copied from existing geometry.

This technique is: Fast and easy select the face and click the tool.

Accurate sketch entities are cloned directly fromexisting geometry.

Intelligent if the solid body changes shape, the

sketch updates. Automatically.


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Convert Entities

Copies one or more curves into the activesketch by projecting them onto the sketchplane.

Curves can be:

Edges of faces

Entities in other sketches

Easy and fast

Select the face or curve.

Click the tool.


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To Create the Outside Curve:

Select the sketch plane. Open a new sketch.

Select the face or curves

you want to convert.In this case, select theface.

Click Convert Entitieson the Sketch toolbar.

file:///C:/2006HSTeacherGuide/Art/ToolbarIcons/Sketch/icon_convert

_entities.tif


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Creating the Outside Curve:

Outside edges of face are copied into theactive sketch.

Sketch is fully defined no dimensionsneeded.


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To Create the Inside Curve:

Click Offset Entities on theSketch toolbar.The PropertyManager opens.

Enter the distance value of 2mm.

Select one of the convertedentities.

The Select chain option causesthe offset to go all the wayaround the contour.


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Creating the Inside Curve:

The system generates a previewof the resulting offset.

A small arrow points towardthe cursor. If you move youcursor to the other side of theline , the arrow changesdirection. This indicates on which side theoffset will be created.

Move the cursor so it is inside the contour.Click the left mouse button to create theoffset.


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Creating the Inside Curve:

The resulting sketch isfully defined.

There is only onedimension. It controlsthe offset distance.


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TutorAssembly

The Tutorassembly iscomprised of twoparts:

Tutor1 (created in

Lesson 2)

Tutor2(created in thislesson)


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Assembly Basics

An assembly contains two or more parts. In an assembly, parts are referred to ascomponents.

Mates are relationships that align and fitcomponents 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.


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To create the Tutor assembly:

Open a newassemblydocumenttemplate.

Open Tutor1.

Open Tutor2.

Arrange the

windows.


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Creating the Tutor assembly:

Drag anddrop thepart iconsinto the

assemblydocument.


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Assembly Basics

The first component placed intoan assembly is fixed.

A fixed component cannot move.

If you want to move a fixedcomponent, you mustFloat (unfix) it first.

Tutor1 is added to the FeatureManager designtree with the symbol (f).

The symbol (f) indicates a fixed component.


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Assembly Basics

Tutor2 is added to theFeatureManager design treewith the symbol (-).

The symbol (-) indicates an

underdefined component.

Tutor2 is free to move and rotate.


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Manipulating Components

Move components by dragging. Move components with a triad.

Move Component translates

(moves) the selected componentaccording to its available degreesof freedom.


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Manipulating Components

Rotate components by dragging. Rotate components with a triad.

Rotate Component rotates the

selected component according toits available degrees of freedom.


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Degrees of Freedom: There are Six

They describe how an objectis free to move.

Translation (movement)alongX, Y, and Z axes.

Rotation aroundX, Y, and Zaxes.


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Mate Relationships

Mates relationships align and fit togethercomponents in an assembly.

The Tutorassembly requires three mates tofully define it.

The three mates are:

Coincident between the topback edge ofTutor1 and

the edge of the lip on Tutor2.

Tutor1

Tutor2

Edges


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Mate Relationships

Second Mate: Coincidentmate between the right faceof Tutor1 and the right faceof Tutor2.

Third Mate: Coincident matebetween the top face of

Tutor1 and the top faceof Tutor2.


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Mates and Degrees of Freedom

The first mate removesall but two degrees offreedom.

The remaining degreesof freedom are:

Movement alongtheedge.

Rotation aroundtheedge.


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The second mate removes one more degree offreedom.

The remaining degree of freedom is:

Rotation aroundthe edge.


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The third mate removes last degree offreedom.

No remaining degrees of freedom.

The assembly is fully defined.

Additi l M t R l ti hi f


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Additional Mate Relationships forExercises and Projects

The switchplate requires twofasteners.

Create the fastener.

Create the switchplate-fastenerassembly.



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The switchplate-fastenerassembly requiresthree mates to be fully defined. The threemates are:

First Mate:Concentric matebetween the cylindricalface of the fastener and

the cylindrical face ofthe switchplate.



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Second Mate:Coincident matebetween the flatcircular back face of

the fastener and theflat front face of theswitchplate.

Faces

Additional Mate Relationships for


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Third Mate:Parallel mate betweenthe flat cut face of thefastener and the flat

top face of theswitchplate.

The switchplate-fastenerassembly is

fully defined.

Faces



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The cdcase-storageboxassembly requiresthree mates to be fully defined. The threemates are:

First Mate:

Coincident betweenthe inside bottom faceof the storageboxandthe bottom face of

the cdcase.

Faces



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Second Mate:Coincident mate betweenthe inside back face ofthe storageboxand theback face of the cdcase.

Faces

Inside back face



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Third Mate:Distance mate between the inside left face ofthe storageboxand the left face of the cdcase.

Distance = 1cm.

Good job! Now,would you like to dothis 24 more times?

No!Faces


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Component Pattern

A Component pattern isa pattern of componentsin an assembly.

The Component pattern

copies the SeedComponent.

The Seed Component

in this example is the cdcase.

This eliminates the work of adding andmating each cdcase individually.


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To Create a Linear Component Pattern:

ClickInsert,ComponentPattern,LinearPattern.


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Creating a Linear Component Pattern:

Select the cdcase as theComponents to Pattern.

Select the front edge of thestorage box for

Pattern Direction.

Spacing = 1cm

Instances = 25

Click OK.


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More to Explore: The Hole Wizard

What determines the size ofthe hole?

The size of the fastener

The desired amount ofclearance

Normal

Close

Loose

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