Ken Youssefi Mechanical Engineering Dept., SJSU 1 Creating a New Part File → New.

Ken Youssefi Mechanical Engineering Dept., SJSU 1

Creating a New PartFile → New


Pro/E Screen

File management Toolbar

Work Screen

3 Principal Orthographic

planes

Part management

area

Datum Display Toolbar

Model Display Toolbar

View management

Toolbar Datum Creation Toolbar

Feature Creation Toolbar

Feature Creation Dashboard


Default Toolbar


Model Display


Pro/E Mouse Functions


Default Datum Planes in Pro/E Three Standards Principal Orthographic Planes

Top

Right

Front


Creating SolidsSketched Features - (extrusions, revolves, sweeps, blends, ..) These features require a two-dimensional drawing (cross section) which is then manipulated into the third dimension. Although they usually use existing geometry for references, they do not specifically require this. These features will involve the use of an important tool called Sketcher. Select a datum plane to draw. Create a 2D sketch. Create a feature from the sketch

by extruding, revolving, sweeping, ….

Revolve

Sweep

Blend

Extrude


Creating Solids

Placed Features - (holes, rounds, shells, ...) These are features that are created directly on existing solid geometry. Examples are placing a hole on an existing surface, or creating a round on an existing edge of a part.

Shell

Rib

Draft

Hole

Round

Chamfer


Edit Toolbar

The final group of buttons is used for editing and modifying existing features.

Merge

Trim

Pattern

Mirror


Implicit Constraints in Sketcher


• vertical lines

• horizontal lines

• perpendicular lines

• tangency

• equal length lines

• equal radius

• vertical alignment

Example of Implicit Constraints


Setting Sketch Orientation

Sketch plane - the plane on which you will draw and your view is always perpendicular to the sketch plane.

The Orientation option list in the dialog window (Top, Bottom, Left, Right) refers to directions relative to the computer screen, as in “TOP edge of the screen” or “BOTTOM edge of the screen” and so on. This orientation must be combined with a chosen reference plane (which must be perpendicular to the sketch plane) so that the desired direction of view onto the sketching plane is obtained.


Setting Sketch Orientation - Example


Sketcher


The Sketcher Toolbar


Sketcher Toolbar Flyout Buttons


Weak vs. Strong Dimensions

Sketch with weak dimensions

A dimension created by Sketcher is called “weak” and is shown in gray. Strong dimensions, on the other hand, are those that you create.

You can make a strong dimension in any of three ways:

1. Modify the value of a weak dimension

2. Create a dimension from scratch by identifying entities in the sketch and placing a new dimension on the sketch

3. Select a weak dimension and promote it to strong using the RMB pop-up menu


Over and Under Constrained Sketch

If there is not enough information to define the drawing (it is underconstrained), Sketcher will create the necessary and sufficient missing dimensions.These are the weak dimensions.If Sketcher finds the drawing is overconstrained (too many dimensions or constraints) it will first try to solve the sketch by deleting one or more of the weak dimensions (the ones it made itself earlier).However, if Sketcher still finds the drawing overconstrained, it will tell you what the redundant information is (which may be dimensions or constraints),


Extrude Command in Pro/E

Extrude

The Extrude DashboardExtrude Icon

Select Placement to define the sketch plane

SolidSurface

Depth options

Blind depth

Thicken SketchRemove material (cut)

Flip direction


Extrude Command in Pro/E

Extruded surface

Extrude Dashboard

Surface

Depth Spec options

Extrude to selected point, curve, plane or surface

Extrude on both sides of the sketch, equal amount.

Extrude from the sketch by a specified value

Thicken Sketch

A Thick extruded solid


Creating an Extruded Cut

1. Select a plane to sketch on, cannot sketch on a curved surface.

2. Sketch the curve

3. Select Remove Material button

Remove Material


Creating an Extruded Cut

Common dashboard controls

Material removal arrow pointing to the right.

Material Removal Side

Material removal arrow pointing to the left.


Blind

Thru next

Thru all

Thru until

Depth options

Creating a Hole (placed feature)

Hole types

Straight

Sketched

Standard hole counterbore

Standard hole countersink


Creating a Hole (placed feature)

Hole placement: linear or radial

The Straight hole dashboard (default)

Standard threaded hole option


Chamfer and Fillet (Round)

RoundChamfer

Chamfer Dashboard

Round Dashboard


Creating a Revolved Feature

• Sketch a 2D profile

• Revolve the sketch around the centerline

Revolve

Extrude

• Sketch a centerline


Creating a Sweep Feature (Protrusion)

Trajectory

Section


Creating a Sweep Feature (Cut)

Create an entity from an edge

Pick the top surface of the table top to sketch, insert the two edges of the table into the sketch plane for reference, erase after finished.

Sketch the sweep trajectory (guide sweep)

Trajectory


Creating a Sweep Feature (Cut)

select Insert → Sweep → Cut, and choose the Select Traj. option


Creating a Sweep Feature (Cut)Sketch the cut profile on the back surface f the table top

Back surface


Creating a Swept Blend Feature

Swept Blend Dashboard

Sweep type

Insert → Swept Blend


Creating a Swept Blend Feature

option keeps each of the feature’s cross sections normal to the trajectory of the feature. Each section is created normal to a vertex of the trajectory or normal to a datum point on the trajectory. It requires the definition of a trajectory and the definition of one or more sections

option keeps the feature’s cross sections normal to a selected planar pivot plane, edge, curve, or axis. Each section of the feature is created normal to the selected pivot plane. It requires the definition of a trajectory a normal plane and the definition of one or more sections.

Constant Normal Direction

option keeps the feature’s cross sections normal to a second trajectory. Each section of the feature is created perpendicular to the normal trajectory. The option requires the definition of a sweep trajectory, a normal trajectory, and two or more sections.

The Normal to Projection

The Normal to Trajectory


Creating a Swept Blend Feature - Examples

The Normal to Projection

The Normal to Trajectory


Creating a Swept Blend Feature - Examples

Sketch the trajectory

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Creating a Swept Blend Feature - ExamplesSelect Insert → Swept Blend Swept Blend dashboard

Select Normal To Trajectory (default)

Select the trajectory, if there is only one sketch, it will be selected automatically


Swept Blend Feature - Example

Select a point and sketch the cross section

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Select Insert when finished with the sketch

Follow the same steps to draw the other sections


Creating a Variable-Section Swept FeatureUsed to create complex geometric shapes. The option sweeps a section along one or more trajectories.


Creating a Datum Plane Tangent to a Curve at a Point

Select the curved plane and the Tangent option

A

Select Datum Plane


Creating a Datum Plane Tangent to a Curve at a Point

Select the end point of the line, the datum plane is tangent to the cylinder at point A.


Sketch on the created datum plane

Extrude and cut

Ken Youssefi Mechanical Engineering Dept., SJSU 1 Creating a New Part File → New.

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