Creo software introduction 3d modeling software

Creo Software, used for 3d modling of machine parts and all kind of object around us. Creo is the 3D CAD solution that helps you accelerate product innovation to build better products faster. Easy to learn, Creo uses a model-based approach to seamlessly take you from the earliest phases of product design to manufacturing, and beyond. Creo combines powerful, proven functionality with new technologies, including generative design, real-time simulation, advanced manufacturing, IIoT, and augmented reality. Creo is also available as a SaaS product, providing innovative cloud-based tools for real-time collaboration and streamlined license management and deployment.

The world of product development moves quickly, and only Creo delivers the transformative tools you need to build a competitive advantage and gain market share.

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Learning Objectives:
• Use various tools to create a geometry.
• Dimension a sketch.
• Apply constraints to a sketch.
• Modify a sketch.
• Use the Modify Dimensions dialog box.
• Edit geometry of a sketch by trimming.
• Mirror a sketch.
• Use drawing display options.

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 The Sketch Mode
Using the Sketch mode, you can draw a 2D sketch of the product and assign required

dimensions and constraints to it.
The following steps outline the procedure to use the Sketch mode:
• Using the Sketch Mode
• Sketch the required section geometry
• Entering the Sketch Mode
• Add the constraints and dimensions to the sketched section
• Add relations to the sketch if needed
• Regenerate the sketch
If the Intent Manager is on while sketching then the sketch is automatically

regenerated.
To enter the Sketch mode, choose the Create a new object button from the File
toolbar. The New dialog box will be displayed with other Pro/ENGINEER modes.

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• When you enter the Sketch mode, the initial
screen appearance is similar to the one shown

in figure.

• This figure also shows the Sketcher Tools
toolbar that will be displayed on the right of the

drawing area.
• The buttons in this toolbar are used to draw
sketches.

• The various drawing options are also available

in the Sketch menu in the menu bar.
• When you enter the sketcher environment, the

Intent Manager is on by default.
 The Sketcher Environment
Initial screen appearance in the
Sketch mode

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• When you enter the sketcher environment, the Select items button is chosen

by default.
• If this button is chosen, the sketcher environment is said to be in the selection

mode.
• In the selection mode, you can select entities of the sketch to edit or to invoke

the shortcut menu.
• The options in the shortcut menu can be used to apply various operations on
the selected item.
 Working with the Sketch in the Sketch Mode

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• To draw lines, there are three tool buttons in the Sketcher Tools toolbar.
• To view these buttons, choose the black arrow on the right of the Create 2 point

lines button.
• The flyout with three tool buttons appears.
• Drawing a Line
• Placing a Point
 Drawing a Sketch Using the Sketcher Tools Toolbar
When you are in the sketcher environment, the Sketcher Tools toolbar on the
Right Toolchest, contains the tools to draw, dimension, and modify a sketch.
• Choose the Create points button from the Sketcher Tools toolbar to place
a point.
• One of the applications of a point is that it is used to dimension a sketch if
placed at the corners of the sketch.

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• Drawing a Line Using the Create 2 point lines Tool
• Drawing a Line Using the Create lines tangent to 2 entities Tool
• Drawing a Centerline Using the Create 2 point centerlines Tool
• Drawing a Rectangle
The Create 2 point lines button is used to create a line by selecting two
points in the drawing area.
The Create lines tangent to 2 entities button is used to draw a tangent
between two entities such as arcs, circles, or a combination of these.
You can draw horizontal, vertical, or inclined centerline using the Create 2
point centerlines button.
Choose the Create rectangle button from the Sketcher Tools toolbar to draw a
rectangle.

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• To draw a circle there are four tools and one tool to draw an ellipse in the Sketcher

Tools toolbar.
• To view the tools available to draw circles and ellipses, choose the black arrow on

the right of the Create circle by picking the center and a point on the circle

button.
• The flyout with five buttons appears.
• Drawing a Circle
• Drawing a Circle Using the Create circle by picking the center and a
point on the circle Tool
As the name suggests, the Create circle by picking the center and a point
on the circle tool is used to draw a circle by specifying the center of the
circle and a point on it.

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Sketch of a flange
• Drawing a Construction Circle
• A construction circle is a circle that is used to align entities, create diametrical or
radial dimensioning, and to reference entities.
• To create a construction circle, draw a circle and then hold down the right mouse
button on it to invoke the shortcut menu as shown in figure.
• Choose the Construction option from the shortcut menu.
The Construction option in
the shortcut menu

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• Drawing a Circle Using the Create concentric circle Tool
• Drawing a Circle Using the Create circle by picking its 3 points Tool
• Drawing a Circle Using the Create a circle tangent to 3 entities Tool
• Drawing an Ellipse Using the Create a full ellipse Tool
• To draw a concentric circle, choose the Create Concentric circle button.
• After selecting this button you need to select a curve to determine
concentricity.
To draw a circle by selecting three points, choose the Create circle by picking

its 3 points button.
• The Create a circle tangent to 3 entities tool is used to draw a circle that is

tangent to three existing entities.
• This tool references other entities to draw a circle.
Choose the Create a full ellipse button from the flyout in the Sketcher Tools
toolbar to draw an ellipse.

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• To draw an arc, there are five tool buttons in the Sketcher Tools toolbar.
• To view them, choose the black arrow on the right of the Create an arc by 3
points or tangent to an entity at its endpoint button.
• The flyout appears with five buttons.
• Drawing an Arc
• Drawing an Arc Using the Create an arc by 3 points or tangent to an
entity at its endpoint tool
• The Create an arc by 3 points or tangent to an entity at its endpoint
tool is used to draw arcs tangent from the endpoint of an existing entity or
by defining three points in the drawing area.
• Figure A and B shows the creation of an arc using the Create an arc by 3
points or tangent to an entity at its end point.

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• Drawing an Arc Using the Create concentric arc Tool
• The Create concentric arc tool is used to draw an arc concentric to an
existing arc.
• You will have to select an entity to which the arc will be concentric.
• The entity selected must be an arc or a circle.
Figure A Figure B

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• Drawing an Arc Using the Create an arc by picking its center and
endpoints Tool
• Drawing an Arc Using the Create an arc tangent to 3 entities Tool

• Drawing an Arc Using the Create a conic arc Tool
Choose the Create an arc by picking its center and endpoints button to
draw an arc by selecting its endpoint.
The Create an arc tangent to 3 entities tool is used to draw an arc that is
tangent to three selected entities.
The Create a conic arc tool is used to draw a conic arc.

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• After you draw a sketch, the next step involves the

dimensioning of the sketch.
• The basic purpose of dimensioning in Pro/ENGINEER is to
control the size of the sketch and to locate it with some

reference.
• The Create defining dimension button is used to manually

dimension the entities.
• You can also choose Sketch > Dimension to display a

cascaded menu as shown in Figure A.
 Dimensioning the Sketch
• Dimensioning a Sketch Using the Create defining dimension

Button or the Normal Option
The Create defining dimension tool is used for normal dimensioning of sketch.
Figure A Dimensioning
options

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• Linear Dimensioning of a Line
 Dimensioning the Basic Sketched Entities
To add linear dimension to a line, select it or its end
points. Then press the middle mouse button to place
the dimension.
• Angular Dimensioning of an Arc
To add angular dimension to an arc, select its ends by
pressing Of the arc by pressing the left mouse button and
then select a point on the arc.
Angular dimensioning technique
Approximate locations of the
cursor to achieve different
dimensions

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• Diameter Dimensioning
• For diameter dimensioning, click on a circle twice.
• Then place the dimension at the desired location by
pressing the middle mouse button
• Radial Dimensioning
• For radial dimensioning, click on the entity once.
• Then place the dimension at the desired location by
pressing the middle mouse button.
Diameter dimensioning technique
Radial dimensioning
technique

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• Dimensioning Revolved Sections
Dimensioning technique
for revolved sections
• To dimension a revolved section, click on the entity to be

dimensioned. Next, select the centerline about which you
want the section to be revolved. Once again select the
original entity that you want to dimension.
• Place the dimension at the desired location by pressing the

middle mouse button

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Constraints are the logical operations that are performed on the selected geometry to
make it more accurate in defining its position with respect to the other geometry.
 Working with Constraints
Constraints dialog box
• Choose the Impose sketcher constraints on the section button from the
Sketcher Tools toolbars to display the Constraints dialog box.
• This dialog box is used to apply the constraints that are listed next.
•Make a line or two vertices vertical

•Make a line or two vertices horizontal.
•Make two entities perpendicular.
•Make two entities tangent.
•Place point on the middle of the line.

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•Create same points, points on entity or collinear constraint.
•Make two points or vertices symmetric about a centerline.
•Create Equal Lengths, Equal Radii or Same Curvature Constraint.
•Make two lines parallel.
The Explain option of the Constraints dialog box provides information about the
constraints that are applied to a sketch.
• Explain Option

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• The need to disable a constraint arises when you are drawing an entity.
• For example, if you draw a circle at some distance apart from a circle, the system

tends to apply the equal radius constraint when the sizes of the two circles become

equal.
• If at this moment you do not want to apply the equal radius constraint, right-click to

disable the equal radius constraint.
• Disabling Constraints
• Select a weak dimension or a weak constraint from the
drawing area. The selected dimension or constraint is
highlighted in red.
• Press and hold the right mouse button to invoke the
shortcut menu.
• Choose the Strong option from the shortcut menu to make
the constraint strong.
• Converting a Weak Constraint into a Strong Constraint
Shortcut menu to
convert weak
Dimension to strong

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 Modifying the Dimensions of a Sketch
• There are four ways to modify the dimensions of a sketch.
• These methods are listed next.
• Using the Modify Dimensions dialog box
Modify Dimensions dialog
box
• You can select one or more dimensions from
the sketch to modify.
• When you select dimension(s) from a sketch,
they are highlighted in red.
• If you want to select more than one dimension,

hold down the CTRL key and select the
dimensions by clicking on them.
• You can also use CTRL+ALT+A or define a
window to select the dimensions in the sketch.

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• Modifying Dimensions by Double-Clicking
• Modify Dimensions Dynamically
• Using the Edit menu
• When you choose the Modify option from the Edit menu, a check mark
appears to the left of the Modify option in the Edit menu.
• You can select a dimension from the sketch to modify.
• When you double-click on a dimension, the pop-up text field appears. Enter a
new dimension value in this field and press ENTER or use the middle mouse
button.
• When you bring the cursor to an entity, the color of the entity changes to cyan.
• Now, if you hold down the left mouse button, you can modify the entity by
dragging the mouse.
• You will notice that as the entity is modified, the dimensions referenced to the
selected entity are also modified.

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• While applying constraints or dimensions, the
system may sometimes prompt you to delete one
or more highlighted dimensions or constraints.
• As soon as the conflict occurs, the Resolve Sketch
dialog box will be displayed as shown in figure.
 Resolve Sketch Dialog Box
Resolve Sketch dialog box
• Delete

When you choose the Undo button, the section is
brought back to the state that was just before the
conflict occurred.
• The Delete button is used to delete a selected dimension or constraint that is

enclosed within the yellow box.
• Select the dimension or the constraint to delete before you choose the Delete

button from the Resolve Sketch dialog box.
• Undo

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• To delete a sketched entity, select it by defining a window by dragging the cursor
around the entity, the color of the selected entity changes to red. Right-click in the
drawing area and hold down the right mouse button until a shortcut menu appears.
• Now, choose the Delete option from this menu to delete the selected item.
 Deleting the Sketched Entities
• Dim > Ref

• Explain

• To restore the last deleted item, choose the Undo button.
• This button is available in the Edit toolbar on the Top Toolchest.
• When you choose the Explain button, the system provides you with information
about the selected constraint or dimension.
• The information will be displayed in the message area.
When you choose the Dim > Ref button, the selected dimension is converted to a

reference dimension.

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• When creating a design, there are a number of places where you need to remove

the unwanted and extended entities.
• You can do this by using the tool buttons available for trimming.
 Trimming the Sketched Entities
• Dynamically trim section entities Tool
• Divide an entity at the point of selection Tool
The Divide an entity at the point of selection tool is used to divide an entity
into any number of parts or entities by specifying points on the entity.
This tool button deletes the selected entities or a portion of the entity from
where it intersects.

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 Mirroring the Sketched Entities
• Trim entities (cut or extend) to other entities or geometry button
The Trim entities (cut or extend) to other entities or geometry button
is used to trim two entities at their corners.
Trimming the lines
• The Mirror selected entities button is used to mirror sketched geometries
about a centerline.
• This tool button helps to reduce the time for the creation and the
dimensioning of symmetrical geometric entities.

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 Inserting Foreign Data Into The Sketch
• The Insert foreign data from palette into the

active object tool helps you to insert certain
standard or user-defined features such as
polygons, profiles, shapes, stars and other

previously created sketches in the sketch mode.
• Choose the Insert foreign Data from
palette into the active object button from the

Sketcher Tools toolbars, the Sketcher Palette

dialog box will be displayed, as shown in figure.
• The options in this dialog box will be used to
insert predefined shapes into the sketch.
The Sketcher Palette
dialog box

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You can enlarge or reduce the drawing display using various drawing display tools
provided in Pro/ENGINEER.
 Drawing Display Options
• Zoom In
• Zoom Out
• Refit object to fully display it on the screen
• Redraw the current
view

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In this tutorial, you will draw the sketch for the model shown in Figure A. The sketch
is shown in Figure B. (Expected time: 30 min)
 Tutorial 1
Figure B Sketch of the modelFigure A Model for Tutorial 1

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Figure C Partial sketch
with weak dimensions
b.Start a new object file.
aSet the working directory.
c.Draw lines using the tool button for creating lines, see Figure C.

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Figure D Sketch with all the
entities, weak dimensions,
and weak constraints
Figure E Sketch with
dimensions and constraints
d.Draw an arc and a circle using respective tool buttons, see Figure D.
e.Dimension the sketch and then modify the dimensions of the sketch,
see Figure E.
f.Save the sketch.

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In this tutorial, you will draw the sketch for the model shown in Figure A. The sketch
is shown in Figure B. (Expected time: 30 min)
 Tutorial 2
Figure B Sketch of the modelFigure A Model for Tutorial 2

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Figure C Sketch with
weak dimensions and
weak constraints
Figure D Sketch
after dimensioning
a.Set the working directory and start a new object file.
b.Draw the sketch using the tool button for creating lines, see Figure C.
c.Dimension the required entities and then
modify the dimensions of the sketch,
see Figure D.
d.Save the sketch.

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In this tutorial, you will draw the sketch for the model shown in Figure A. The sketch
is shown in Figure B. (Expected time: 30 min)
 Tutorial 3
Figure B Sketch of the modelFigure A Model for Tutorial 3

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a.Set the working directory and start a new object file.
b.Draw the sketch using the sketcher tool buttons.
c.Dimension the sketch and then modify the dimensions of the sketch, see Figure C.
Figure C Sketch with dimensions
and constraints
d.Save the sketch.

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In this exercise, you will draw the sketch for the model shown in Figure A. The
sketch is shown in Figure B. (Expected time: 30 min)
 Exercise 1
Figure B Sketch of the modelFigure A Solid model for Exercise 1

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In this exercise, you will draw the sketch for the model shown in Figure A. The
sketch is shown in Figure B. (Expected time: 30 min)
 Exercise 2
Figure B Sketch of the modelFigure A Solid model
for Exercise 2

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In this exercise, you will draw the sketch for the model shown in Figure A. The
sketch is shown in Figure B. (Expected time: 30 min)
 Exercise 3
Figure B Sketch of the modelFigure A Solid model
for Exercise 3

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In this exercise, you will draw the sketch for the model shown in Figure A. The
sketch is shown in Figure B. (Expected time: 30 min)
 Exercise 4
Figure B Sketch of the modelFigure A Solid model for
Exercise 4

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 Exercise 5
In this exercise, you will draw the sketch for the model shown in Figure A. The
sketch is shown in Figure B.
Figure A Solid model for
Exercise 5
Figure B Sketch of the model