pro/engineer wildfire 2.0 for new users¥λικό... · pro/engineer wildfire 2.0 core concepts...

Introduction to Pro/ENGINEER Wildfire 2.0. http://www.ptc.com/go/wildfire/learn/how2_intro/printable_page.htm

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Pro/ENGINEER Wildfire 2.0 for New Users


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Before you get startedThis tutorial is intended to be used alongside Pro/ENGINEER Wildfire 2.0.

Please make sure that Pro/ENGINEER Wildfire 2.0 is installed on your machine before continuing.

If Pro/ENGINEER is already running, please exit it now.

You will need to create a special startup command for Pro/ENGINEER, and install the Pro/ENGINEER model files for this Tutorial:

Download the model files from www.ptc.com/go/handson/models. Save the zip file to your desktop.1.

Extract the zip file to a location on your hard drive.

A plain drive letter (ex: C:\ ) is recommended, and is used for this tutorial.

2.

Browse to the folder created by the zip file.

For example: C:\users\student\HOW_INTRO-WF2

3.

Assuming Pro/ENGINEER Wildfire 2.0 is already installed on your computer, locate the shortcut from the Start menu.

Right-click the shortcut and select Copy.

Right-click on your desktop and select Paste Shortcut.

4.

Right-click newly pasted shortcut and select Properties.

Enter (or paste in) the full path to the Intro_HOW folder.

For example: C:\users\student\HOW_INTRO-WF2

5.

Start Pro/ENGINEER Wildfire 2.0 using the newly configured shortcut.6.


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Using this TutorialCarefully read all of the content on each page and perform the given steps before proceeding to the nextpage.

You will see various icons throughout the tutorial:

Information is provided at the start of most tasks.

Tips are provided along the way.

Notes are provided as additional information.

There are several conventions used when working with Pro/ENGINEER Wildfire 2.0:

The "picks and clicks" are shown in Bold.

Text that you enter is shown in Bold.

Icons and their names are shown inline with the text.

Names of models are shown in CAPS.

Keyboard keys are shown in CAPS.


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WelcomeThis tutorial will teach you basic part modeling skills, as well as teach you how to create basic assemblies anddrawings. This tutorial is designed for students who have never used any release of Pro/ENGINEER.

ContentsClick Next to proceed with learning core Pro/ENGINEER Wildfire 2.0 core concepts, or use following links tonavigate to any of the exercises within this tutorial:

Pro/ENGINEER Wildfire 2.0 Core Concepts

Learn Pro/ENGINEER Wildfire 2.0 basics

Exercise 1: Opening, Orienting, and Editing Models

Describe Pro/ENGINEER Wildfire fundamentals.

Navigate the Pro/ENGINEER Wildfire interface.

Exercise 2: Creating Part Models

Preview, open, and orient design models.

Create basic part models.

Exercise 3: Creating Assemblies

Create an assembly.

Run a simple mechanism.

Exercise 4: Creating Drawings

Create a drawing with views of an assembly and a part.

Show and manipulate dimensions on drawing views.

Exercise 5: Model Associativity

Modify a model and observe the assembly and drawing update.

Check for assembly interferences.


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Core Concepts SectionRead through the five pages in this section to learn Pro/E Wildfire 2.0 basics before starting the firstexercise.

Pro/ENGINEER Wildfire 2.0 Core ConceptsThe six core Pro/ENGINEER Wildfire 2.0 concepts examined in this tutorial are:

Solid Modeling

Feature Based

Parametric

Parent / Child Relationships

Associative

Model Centric


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Solid ModelingPro/ENGINEER Wildfire 2.0 allows you to easily create 3D solid models, enabling you to visualize parts andassemblies with a realistic appearance. Based on material properties such as density, these models have mass,volume, surface area and other physical properties such as a center of gravity.

For example, consider the cast aluminum engine block shown below. This model was created in millimeters,and has the mass properties shown. The coordinate system labeled 123 indicates the center of gravity of themodel.

The following are advantages of solid modeling:

If the model changes (such as increasing the number of cooling fins), all of the mass properties would automatically update.

Solid models also allow you to check tolerances and clearance/interference between components in an assembly.

VOLUME = 3.332e+04 MM^3 SURFACE AREA = 2.488e+04 MM^2

DENSITY = 2.7e-06 KG/MM^3 MASS = 8.998e-02 KG

CENTER OF GRAVITY X = -0.642 MM Y = 20.508 MM Z = 24.194 MM

Solid Model and its Mass Properties


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Feature BasedPro/ENGINEER Wildfire 2.0 models are constructed using a series of features. Each feature builds upon theprevious feature, creating the model one feature at a time. Individually each feature can be simple, butcollectively can form complex parts and assemblies.

In the following figure, we have a connecting rod in the various stages of its creation:

An Extrude feature forms the overall shape and size of the model.1.

Additional Extrude features created at the top and bottom of the model.2.

Hole features created at the top and bottom of the model.3.

Round features created at the top and bottom of the model.4.

CONNECTING_ROD Features


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Parametric Pro/ENGINEER Wildfire 2.0 models are driven using dimension values. If a dimension of a feature is changed,that solid feature will update. This change will then automatically propagate through the remaining features inthe model, updating the entire part.

Parent/Child RelationshipsParent/Child relationships provide a powerful way to capture your "design intent" into a model. Parent/Childrelationships are naturally created between features during the modeling process. When creating a feature,existing features that are referenced become parents to the new feature. Also, if the parent features areupdated, the child features will automatically update accordingly.

In the following figure, the PISTON model has a height of 18.5, with a hole dimensioned 8 from the topsurface. The height dimension is then modified to 24, and the model is Regenerated to update its features. Notice that the parent/child relationship between the hole and the body of the model forces the hole to move upwards to maintain the 8 dimension.

Editing Height of the PISTON

This behavior (the hole referencing the top surface) is an example of the design intent that was built into thismodel. Alternatively, the hole could have referenced the bottom surface, yielding a different effect when themodel height is modified.


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Associative & Model CentricIf a part model is changed in Pro/ENGINEER Wildfire 2.0, any assemblies or drawings that reference that modelwill automatically update. This behavior is known as Associativity and also works in reverse- if a model dimension in a drawing is updated, the part model and the assembly it is used in will update.

The part model is the central source of design information. Once a part model is created, it can be:

Placed in an assembly- Depending on how components are assembled, the components can be stationaryor allowed to move as a mechanism.

Used to create a drawing- 2D views of the model can be quickly placed on a drawing sheet, and dimensions can be automatically shown.

Model Associativity


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Pro/ENGINEEER Wildfire 2.0 InterfaceThe following are basic components of the interface:

Graphics Window- Large gray area where the model is visible.

Navigator- collapsible panels on the left of the screen.

Browser- A multi-functional web browser, shown displaying a list of models and a small preview window in the center of the screen.

Model Tree- Lists the features of a part, or the components in an assembly on the left of the screen.

Folder Browser (not shown)- Displays on the left of the screen in place of the model tree, and lists folders on your computer or network. You can browse folders and view their contents in theBrowser.

Main Menu- Located on the top of the screen, this pull-down menu has common menu options such as File, Edit, Insert, Tools, and Help.

Main Toolbar- An icon toolbar located at the top of the screen.

Feature Toolbar- An icon toolbar located at the right of the screen.

Dashboard (not shown)- A dialog bar located at the bottom of the screen when creating features.


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Exercise 1: Opening, Orienting, and Editing Models

Overview- In this exercise, you will learn three basic skills that are essential when modeling with Pro/ENGINEER Wildfire 2.0

Preview and open design models- You will use the Navigator and Browser to browse folders, previewmodels, and open models.

Orient design models- After opening an existing model, you will use a combination of keyboard and mouse commands to Spin, Pan, and Zoom models.

Edit existing design models- After learning basic model orientation, you will use editing options to modify existing models.


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Working DirectoryThe Working Directory sets the default folder for opening and saving models.

Task 1-1. Open the ENGINE_BLOCK.PRT using the Navigator.

Start Pro/ENGINEER Wildfire 2.0 if necessary. The default web page displayed in the browser is the Pro/ENGINEER Wildfire 2.0 landing page.

1.

In the Folder Browser (left of the screen), locate the HOW_INTRO-WF2 folder, and expand it by

clicking the '+'.

2.

Click on the ProE_models folder to view its contents in the browser.3.

Right click on the ProE_models folder and select Set Working Directory.4.

Select the ENGINE_BLOCK.PRT from the browser.

Notice a model preview appears in the browser. a.

5.

Click Open File in Pro/E from the browser (to the right of the preview). 6.

ENGINE_BLOCK.PRT


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Model Orientation CommandsSpin: Rotate the model on the screen.Pan: Move the model on the screen.Zoom: Bring the model towards or away from you.Standard Orientation: An orientation that serves as a familiar starting point for viewing the model.

Task 1-2. Practice using Spin, Pan, and Zoom with the ENGINE_BLOCK.

To spin the model, press and hold the middle mouse button and move the mouse in various directions.1.

Click Saved View List from the main toolbar (top of the screen) and select Standard Orientation.2.

Zoom in and out on the model: 3.

Place the mouse cursor over a desired area of the modela.

Press CTRL, press and hold the middle mouse button, and move the mouse towards you to zoomin.

b.

Press CTRL, press and hold the middle mouse button, and move the mouse away from you tozoom out.

c.

The location of the cursor determines the target area for zooming.

If you have a wheel mouse, try zooming by rolling the wheel:4.

Roll the mouse wheel towards you to zoom in (without the CTRL key).a.

Roll the mouse wheel away from you to zoom out. b.

Click Saved View List from the main toolbar and select Standard Orientation.5.

Pan the model around the screen:

Press SHIFT, press and hold the middle mouse button, and move the mouse in various directions.a.

6.


You can press CTRL + D as a shortcut to the Standard Orientation.


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Selecting with the MouseMove the mouse over a feature to highlight it. Click the left mouse button to make a selection. Cyan (light blue) highlighting indicates an item is pre-selected. Red highlighting indicates an item is selected. Once a feature is selected, edges or surfaces of the feature will highlight, and could be selected.

Task 1-3. Select the mounting flange.

Highlight and select a feature as shown in the following figure: 1.

Place the cursor over the EXTRUDE_2 feature so it highlights in cyan.a.

Select the EXTRUDE_2 feature by clicking on it, so it highlights in red. b.

Zoom in to make selection easier.

Highlighting a Feature

Click on the background to de-select the feature.2.

Highlight and select EXTRUDE_2 again.

Leave the feature selected and continue. a.

3.


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Edit Definition and Drag HandlesThe Edit Definition option opens the dashboard for a feature, where any desired changes to a feature can be made.

A 'right-click and hold' technique is used to access popup menus, whereas a quick 'right-click and release' will pre-highlight the next feature beneath the cursor.

Drag handles are small white squares located on the yellow feature preview.

Task 1-4. Edit the definition of the mounting flange (EXTRUDE_2) to make it thicker.

With EXTRUDE_2 still selected, right-click and hold, and then select Edit Definition.

Notice that features created after this extrude are not shown during redefinition. a.

1.

Drag the depth handle on the model (white square on the yellow preview) from 2 to 5, as shown in the following figure.

Notice the depth value has updated in the dashboard (bottom of the screen).a.

2.

Redefining a feature

Click Complete Feature from the right of the dashboard (bottom of the screen).

The model will take a few moments to regenerate the many features that come after the extrude we redefined.

a.

Notice that this change has also affected the opposite side, due to the existing Parent/Child relationships.

b.

3.


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Editing Feature DimensionsYou can Edit a feature to display its dimensions, and then enter new values. You then mustRegenerate the model to update the changes.

Task 1-5. Edit the dimensions of the carburetor mount, and then undo the changes.

Highlight and select the extrude feature as shown in the following figure. 1.

Selecting a Feature

Right-click and hold, then select Edit. The section and dimensions of the feature appear.2.

Double-click on the 14.5 dimension, type 11.5, and press ENTER.3.

Click Regenerate from the main toolbar (top of the screen) to update the model. 4.

Model Regenerated

Click Undo from the main toolbar (top of the screen) to reverse the last edit. 5.

You can press CTRL + Z as a shortcut to Undo.


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Creating a RoundRounds allow you to add or remove material from a model by applying a radius to an edge. You cansimply select an edge, set the radius, and complete the feature.

Task 1-6. Create a round on the carburetor mount to smooth off a sharp edge.

Start the Round Tool from the feature toolbar (right of the screen).1.

Select the edge shown in the following figure.

Notice the round automatically follows the tangent chain of edges.a.

2.

Selecting an Edge

Drag either radius handle (white square on the yellow preview) to a value of 1. 3.

Click Complete Feature from the dashboard (bottom of the screen).

Notice the Round feature is placed at the bottom of the model tree (left of the screen)a.

4.

Round Created


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Undo / RedoYou can use the Undo and Redo options to correct unintentional actions.

Task 1-7. Delete the round and Undo the deletion.

With the round still selected (highlighted in red), right-click and hold, select Delete, then click OK.1.

Click Undo from the main toolbar to return the feature to the model.2.

Click Save from the main toolbar and click OK.3.

Click File > Close Window . 4.

Models remain in session memory until Erased.

This completes the first exercise.


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Exercise 2: Creating Part Models

Overview - In this exercise you will learn basic part modeling skills by creating three part models:

PISTON_PIN.PRT

PISTON.PRT

CONNECTING_ROD.PRT

PISTON_PIN and PISTON

CONNECTING_ROD


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Creating Part ModelsNew Part models are created from a default template, which contains default datum planes and a coordinate system.

Default datum planes provide 3 orthogonal planes in 3D space that can be used as initial references when creating features on models.

All default templates in this workshop are setup to use millimeters.

Task 2-1. Create the PISTON_PIN model using the default template.

Click New from the main toolbar and select Part as the Type. Type PISTON_PIN as the Name and press ENTER.

1.

New Part Model

Click Datum Axes , Datum Points , and Coordinate Systems from the main toolbar (top of

the screen) to disable their display.

2.


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Creating SketchesA Sketch is a basic 2D shape used to create a feature, and is created on a planar reference.

Once created, sketches may be easily used to create 3D features.

Task 2-2. Create a circular sketch to be used for the main body of the model.

Start the Sketch Tool from the feature toolbar (right of the screen).1.

Select datum plane FRONT from the model, and click Sketch from the Sketch dialog box.2.

Click Close from the References dialog box. 3.

Click Datum Planes from the main toolbar (top of the screen) to disable their display. 4.

Sketch a circle as shown in the following figure: 5.

Click Circle from the sketcher toolbar (right of the screen).a.

Position the cursor to snap at the intersection of the datum planes.b.

Click and release to place the circle center, move the mouse outward, then click and release again.c.

Notice that a dimension is automatically created.d.

Click Select Items from the sketcher toolbar (right of the screen) to allow items to be selected.e.

Double-click the diameter dimension value, type 5, and press ENTER. f.

Creating a sketch

Click Complete Sketch from the sketcher toolbar (right of the screen).6.


Click Datum Planes from the main toolbar to enable their display. 8.


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Using the Extrude ToolThe Extrude tool allows you to take a sketch and linearly extrude it to create a feature.

You can add material (protrusion) or remove material (cut) when using the Extrude tool.

Task 2-3. Create an Extruded protrusion using the previous sketch.

With the sketch still selected (highlighted in red), create an Extrude feature as shown in the following figure:

1.

Start the Extrude Tool from the feature toolbar (right of the screen).a.

Drag the depth handle (white square on the yellow preview) to 4.b.

Click the black arrow on the Depth Options Flyout in the dashboard (bottom of the screen)and select Both Sides .

c.

Type 20 in the dashboard and for the depth and press ENTER.d.

Click Refit from the main toolbar (top of the screen).e.

Click Complete Feature from the dashboard (bottom of the screen). f.

Extrude Feature Created




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Creating the PISTONThe PISTON also starts off using a circular sketch, but it is placed on a different plane.

Task 2-4. Create the PISTON.PRT, and create the first Sketch.

Click New from the main toolbar and select Part as the Type.1.

Type PISTON as the Name and press ENTER. A new part model is created from the default template.2.

Start the Sketch Tool from the feature toolbar (right of the screen).3.

Select datum plane TOP from the model, and click Sketch from the Sketch dialog box.4.

Sketch a circle as shown in the following figure:

Click Close from the References dialog box. a.

Click Datum Planes from the main toolbar (top of the screen) to disable their display. b.

Click Circle from the sketcher toolbar (right of the screen). c.

Click and release to place the circle center, move the mouse outward, then click and release again.d.

Click Select Items from the sketcher toolbar to allow items to be selected. e.

Double-click the diameter dimension, type 21, and press ENTER. f.

5.

Creating a Sketch

Click Complete Sketch from the sketcher toolbar.6.


Click Datum Planes from the main toolbar to enable their display. 8.


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Changing the Depth DirectionYou can flip the feature to the other side of its sketching plane by using the Change Depth Directionoption.

Task 2-5. Use the previous sketch to create the first Extrude feature.

With the sketch still selected, create an Extrude feature as shown in the following figure: 1.

Start the Extrude Tool from the feature toolbar (right of the screen).a.

Double-click on the depth value, type 18.5, and press ENTER.b.

Click Change Depth Direction in the dashboard (bottom of the screen) to flip the direction of feature creation downward.

c.

Click Complete Feature from the dashboard.d.

The snapping interval for drag handles is currently set to 1mm.

Extrude Feature Created


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Creating a Group of FeaturesThe next solid feature to be created is an Extruded Cut to hollow out the PISTON. In order to capturethe desired dimensioning scheme for the cut, its sketch will be placed on a datum plane offset from the top surface of the model.

We will start the Extrude tool and Pause it. We will then create the datum plane andthe sketch. When the Extrude tool is Resumed and completed, the system automatically createsa Group in the model tree. A group allows us to edit and manipulate several features as one.

Task 2-6. Start the Extrude tool and then create a datum plane.

Start the Extrude Tool from the feature toolbar (right of the screen).1.

Click Pause Feature from the right of the dashboard. (bottom of the screen) 2.

Notice the dashboard grays-out, indicating it is paused.a.

Start the Datum Plane Tool from the feature toolbar (right of the screen). .3.

Select datum plane TOP from the model, and drag the offset handle downward to 2.4.

Click OK from the Datum Plane dialog box.5.

Datum Plane Created


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Using Centerlines in a SketchCenterlines promote symmetry when sketching. In this example, we want a rectangle to besketched symmetrically about the vertical and horizontal references. Centerlines display as a yellowdashed line.

Task 2-7. Sketch on the previous datum plane. Begin by sketching a symmetric rectangle.

With the datum plane still selected, start the Sketch Tool from the feature toolbar.

Notice that datum plane DTM1 is automatically selected as the Sketching Plane.a.

Click Sketch from the Sketch dialog box.b.

Click Close from the References dialog box.c.

Click Datum Planes from the main toolbar (top of the screen) to disable their display.d.

Click No Hidden from the main toolbar.e.

Notice that there are two tan dashed lines, these are sketcher references. Sketched geometry willsnap to these references.

f.

1.

Sketch centerlines and a rectangle as shown in the following figure: 2.

Click the black arrow on the Line Types Flyout in the sketcher toolbar (right of the screen),and select Centerline .

a.

Click two locations on the vertical sketcher reference to sketch a vertical centerlineb.

Sketch another centerline on the horizontal sketcher reference, as shown on the left.c.

Click Rectangle from the sketcher toolbar (right of the screen).d.

Click and release to select a location for the upper left corner of the rectangle.e.

Allowing the rectangle to snap to symmetry, click and release to select a location for the lower right corner of the rectangle.

f.

Sketching Centerlines and a Rectangle

Always use a 'click-and-release', 'click-and-release' technique when sketchinggeometry, as opposed to holding down the left mouse button and 'dragging'.


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Sketching ArcsThe Arc tool can create both 3-point and tangent-end arcs. In this task, we will be creating aTangent Arc.

Task 2-8. Continue the sketch to create an oval shape. Begin by sketching tangent arcs using the rectangleas a guide.

Click Arc from the sketcher toolbar (right of the screen).

Click and release on the upper right vertex of the rectangle to start the arc.a.

Move the cursor rightward out of the green quadrant symbol to continue the arc.b.

Click and release on the lower right vertex of the rectangle to complete the arc.c.

With Arc still depressed, sketch a similar arc on the left of the rectangle (this time, move thecursor leftward out of the green quadrant symbol).

d.

1.

Sketching Tangent Arcs

Always use a 'click-and-release', 'click-and-release' technique when sketchinggeometry, as opposed to holding down the left mouse button and 'dragging'.

Middle-click to stop sketching and to allow items to be selected.

Notice that Select Items is now depressed in the sketcher toolbar.a.

Press CTRL and select the two vertical lines.b.

Right-click and hold, then and select Delete. c.

2.


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Creating DimensionsMany different dimension types are created with the Dimension tool. To create a dimension, selectitem(s) to be dimensioned and then middle-click to locate the dimension value

Task 2-9. Complete the oval-shaped sketch by creating dimensions.

Click Dimension from the sketcher toolbar (right of the screen). 1.

Select each arc, position the cursor above the sketch, and middle-click to place the dimension.a.

Select Horiz from the Dim Orientation dialog box that appears and click Accept.b.

With Dimension still depressed, select the top and bottom lines.c.

Position the cursor to the right of the sketch, and middle-click to place the dimension.d.

Middle-click to stop sketching and to allow items to be selected. Notice that Select Items is now depressed.

e.

Double-click on the horizontal dimension, type 18, and press ENTER.f.

Double-click on the horizontal dimension, type 12.5, and press ENTER.g.

Creating Dimensions



Click Datum Planes from the main toolbar to enable their display.4.

Click Shading from the main toolbar.5.


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Completing the Group of featuresNow that the datum plane and sketch have been created, we will Resume and complete the Extrude feature, creating an oval cut that hollows out the PISTON.

Task 2-10. Complete the Extruded cut using the previous sketch.

With the sketch still selected, complete the Extrude feature as shown in the following figure: 1.

Click Resume Feature from the dashboard.a.

Click the yellow depth direction arrow on the model to flip the direction downward.b.

Click the black arrow on the Depth Options Flyout in the dashboard and select Through All .

c.

Click Remove Material from the dashboard, and then click Complete Feature .d.

Press and hold the middle mouse button to spin the model, and view the cut on the underside.e.

Many feature operations can be done by right clicking on drag handles or the model, or by using the icons in the dashboard.

Extruded Cut Created


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Auto GroupsThe datum plane and sketch have been automatically grouped with the Extrude feature. Thesefeatures are also automatically Hidden, so they will not clutter up the display. Hidden features are'grayed-out' in the model tree.

Task 2-11. Examine the created group in the model tree.

Locate the EXTRUDE_2 group in the Model Tree.

Notice that the Extruded Cut feature was automatically grouped with the datum plane and sketch used to define it.

a.

1.

Model Tree


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Creating Linear HolesHoles remove material from a model and have a cylindrical shape by default.

Linear holes require Primary and Secondary references. The primary reference is placement plane,and the secondary references dimensionally locate the hole.

Task 2-12. Begin creating a hole in the center of the PISTON.


Start the Hole Tool from the feature toolbar, and select datum plane FRONT from the model.

Right-click and hold, then select Secondary References.a.

Press CTRL and select datum planes TOP and RIGHT from the model to dimensionally locate the hole.

b.

2.

Notice that you must press and hold the CTRL key to select multiple references.

Continue the hole as shown in the following figure: 3.

Click Saved View List from the main toolbar and select FRONT.a.

Drag the location handle (in the center of the hole) to position the hole approximately as shown onthe left.

b.

Select the Placement tab in the dashboard, modify the offset value from datum plane TOP to 8, and press ENTER.

c.

Change the dimension type for datum plane RIGHT from Offset to Align. d.

Positioning the Hole


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Task 2-13. Complete the hole in the center of the PISTON.

Complete the hole as shown in the following figure: 1.

Click Saved View List from the main toolbar and select Standard Orientation.a.

Click the Shape tab in the dashboard.b.

Change the existing depth option from Blind to Through All.c.

Change the depth option for Side 2 from None to Through All.d.

Type 5 for the diameter in the dashboard, and press ENTER.e.

Click Complete Feature .f.

Hole Created

You can also middle-click as a shortcut to Complete Feature .


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Applying Color to ModelsYou can use the Color and Appearance dialog box to create and apply colors for models. In thiscase, a basic color palette has been pre-loaded.

Task 2-14. Apply a color appearance to the model.

Click Datum Planes from the main toolbar to disable their display.1.

Click View > Color and Appearance from the main menu.

Select the Blue_Dark appearance (3rd sphere in the top row) and click Apply.a.

Click Close from the Appearance Editor dialog box. b.

2.

Completed PISTON




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Creating the CONNECTING RODWe will create the body of the CONNECTING_ROD using an oval-shaped sketch and extrude.

Task 2-15. Create the CONNECTING_ROD and begin a sketch.


Click New from the main toolbar and select Part as the Type.

Type CONNECTING_ROD as the Name and press ENTER a.

2.

Start the Sketch Tool from the feature toolbar.

Select datum plane FRONT from the model, and click Sketch from the Sketch dialog box.a.

Click Close from the References dialog box.b.

Click Datum Planes from the main toolbar to disable their display. c.

3.

Begin the sketch of an oval by sketching two circles as shown in the following figure:4.

Click Centerline from the sketcher toolbar. Sketch a centerline by clicking two locations on thevertical reference.

a.

Click Circle from the sketcher toolbar. Click a location on the horizontal reference for thecenter of the left circle, then complete the circle.

b.

Click a location on the horizontal reference for the center of the right circle, then move the mouse outwards until the radius snaps to the radius of the first circle, then click again to complete it.

c.

Click Constraints from the sketcher toolbar.d.

Click Symmetric , and select the center of each circle and then the centerline.e.

Click Close from the Constraints dialog box.f.

Sketching Circles


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Tangent Lines and Dynamic TrimThe 2-Tangent Line allows you to easily sketch lines tangent to 2 entities.

The Dynamic Trim tool allows you to remove unwanted portions of sketched entities. A freehandcurve is dragged through the sketch, and any entities intersected by it will be deleted.

Task 2-16. Continue the oval sketch for the CONNECTING_ROD.

Continue the sketch as shown in the following figure: 1.

Click the black arrow on the Line Types Flyout in the sketcher toolbar and select 2-Tangent

Line .

a.

Allowing the cursor to snap to the circles, sketch two horizontal lines as shown.b.

Sketching Lines

Click Dynamic Trim from the sketcher toolbar. 2.

Place the cursor inside one of the circles.a.

Click and hold the left mouse button, and then drag a freehand curve through the inner arcs toremove them (any entities intersected by the freehand curve will be deleted).

b.

Trimming Completed

Click Undo and use Dynamic Trim again if necessary.


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Task 2-17. Complete the sketch and create a symmetric Extrude.

Dimension the sketch as shown in the following figure: 1.

Click Dimension from the sketcher toolbar.a.

Select the center of each arc and middle-click above the sketch to place the horizontal dimension.b.

Double-click the left arc and then middle-click to the the left of the sketch to place the diameterdimension.

c.

Middle-click to stop sketching and to allow items to be selected.d.

Double-click on the diameter dimension, type 8.5, and press ENTER.e.

Double-click on the length dimension, type 33, and press ENTER.f.

Creating and Modifying Dimensions




With the sketch still selected, create an Extrude feature as shown in the following figure: 5.

Start the Extrude Tool from the feature toolbar.a.

Click the black arrow on the Depth Options Flyout in the dashboard and select Both Sides.

b.

Drag the depth handle to 3.c.

Click Complete Feature from the dashboard.d.

Extrude Completed


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Tracing Existing GeometryYou can use the Entity from Edge tool to trace existing geometry. The created entities will 'snap' tothe existing geometry without the need for dimensions.

Task 2-18. Begin creating a second sketch by tracing existing geometry.

Start the Sketch Tool from the feature toolbar.1.

Click Use Previous and then click Sketch from the Sketch dialog box.2.

Sketch as shown in the following figure: 3.

Click Close from the References dialog box. a.

Click Datum Planes from the main toolbar to disable their display.b.

Click No Hidden from the main toolbar.c.

Click Entity from Edge from the sketcher toolbar.d.

Select the arc and the two straight edges as shown in the following figure.e.

Click Close from the Type dialog box.f.

Creating Entities from Edges


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Task 2-19. Continue the sketch by sketching lines and trimming.

Click Line from the line types flyout in the sketcher toolbar. 1.

Sketch a vertical line snapping to the existing lines, and middle-click to stop sketching.a.

Click Dynamic Trim from the sketcher toolbar.b.

Click and drag to sketch a freehand curve to remove the unwanted horizontal line segments as shown in the bottom figure.

c.

Ignore any dimension values for now.d.

Sketching a Line and Dynamic Trim


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Task 2-20. Dimension and complete the sketch.

Click Dimension from the sketcher toolbar. 1.

Select the arc, and the vertical line, then middle-click to place the dimension.a.

Middle-click to stop sketching and to allow items to be selected.b.

Double-click on the dimension value, type 8, and press ENTER.c.

Dimension Created



Click Shading from the main toolbar. 4.


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Task 2-21. Create an extrude forming the enlarged end of the model.

With the sketch still selected, start the Extrude Tool from the feature toolbar. 1.

Click the black arrow on the Depth Options Flyout in the dashboard and select Both Sides.

a.

Drag the depth handle to 7.b.

Click Complete Feature from the dashboard.c.

You can also right-click on depth handles and select the desired depth option.

Protrusion Created


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Datum AxesDatum Axes are linear references that can be used to create other features.

Task 2-22. Create a datum axis in the end of the model.

Click Datum Axes from the main toolbar (top of the screen) to enable their display.1.

Start the Datum Axis Tool from the feature toolbar (right of the screen).2.

Select the cylindrical surface shown in the following figure and click OK from the Datum Axis dialog box.3.

Creating a Datum Axis


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Coaxial HolesCoaxial Holes use a datum axis for location, but also require a placement plane as a secondary reference.

Task 2-23. Create a coaxial hole on the previous axis.

With the axis still selected, start the Hole Tool from the feature toolbar. 1.

Right-click and hold, then select Secondary References.a.

Select the "D-shaped" surface shown on the upper left as the placement plane.b.

Right-click on the depth handle and hold, then select Through All.c.

Notice the diameter dimension is set to 5 from the previous hole.d.

Click Complete Feature from the dashboard.e.

Creating a Hole

Click Datum Axes from the main toolbar to disable their display. 2.


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Selecting Multiple Round ReferencesPress CTRL to select multiple edges for a single round set.

Task 2-24. Create a round to add strength to the end of the model.

Start the Round Tool from the feature toolbar. 1.

Press CTRL and select the two inner edges shown in the following figure.a.

Drag either radius handle to 3.b.

Click Complete Feature from the dashboard.c.

Creating a Round


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Mirroring FeaturesYou can use the Mirror tool to mirror feature(s) about a selected plane.

Task 2-25. Mirror a series of features to quickly create the opposite side of the CONNECTING_ROD.

Press CTRL and select the following four features from bottom of the Model Tree (left of the screen).1.

Selecting Features

Start the Mirror Tool from the feature toolbar (right of the screen).2.

Select datum plane RIGHT from the Model Tree (left of the screen).3.

Click Complete Feature from the dashboard.4.

Features Mirrored

Pro/ENGINEER Wildfire has a number of editing tools to quickly duplicate features, including Mirror, Copy/Paste, and Pattern.



This completes the second exercise.

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