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Creating a New Part

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Mechanical Engineering Dept., SJSU. 1. Creating a New Part. File New. Ken Youssefi. Mechanical Engineering Dept., SJSU. 2. Pro/E Screen. File management Toolbar ... – PowerPoint PPT presentation

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Title: Creating a New Part


1
Creating a New Part
File ? New
2
Pro/E Screen
Part management area
3 Principal Orthographic planes
Feature Creation Toolbar
Work Screen
3
Default Toolbar
4
Model Display
5
Pro/E Mouse Functions
6
Default Datum Planes in Pro/E Three Standards
Principal Orthographic Planes
Top
Front
Right
7
Creating Solids
Sketched 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, .

8
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.
Hole
Shell
Rib
Draft
Round
Chamfer
9
Edit Toolbar
The final group of buttons is used for editing
and modifying existing features.
Mirror
Merge
Trim
Pattern
10
Implicit Constraints in Sketcher
11
Example of Implicit Constraints
  • vertical lines
  • horizontal lines
  • perpendicular lines
  • tangency
  • equal length lines
  • equal radius
  • vertical alignment

12
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.
13
Setting Sketch Orientation - Example
14
Sketcher
15
The Sketcher Toolbar
16
Sketcher Toolbar Flyout Buttons
17
Weak vs. Strong 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.
Sketch with weak dimensions
  • You can make a strong dimension in any of three
    ways
  • Modify the value of a weak dimension
  • Create a dimension from scratch by identifying
    entities in the sketch and placing a new
    dimension on the sketch
  • Select a weak dimension and promote it to strong
    using the RMB pop-up menu

18
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),
19
Extrude Command in Pro/E
Extrude
20
Extrude Command in Pro/E
Extrude Dashboard
Surface
Extruded surface
21
Creating an Extruded Cut
22
Creating an Extruded Cut
23
Creating a Hole (placed feature)
Straight
Sketched
Standard hole countersink
Standard hole counterbore
Thru next
Blind
Thru all
Thru until
Depth options
24
Creating a Hole (placed feature)
Hole placement linear or radial
The Straight hole dashboard (default)
25
Chamfer and Fillet (Round)
Round
Chamfer
26
Creating a Revolved Feature
Extrude
Revolve
27
Creating a Sweep Feature (Protrusion)
28
Creating a Sweep Feature (Cut)
29
Creating a Sweep Feature (Cut)
select Insert ? Sweep ? Cut, and choose the
Select Traj. option
30
Creating a Sweep Feature (Cut)
Sketch the cut profile on the back surface f the
table top
Back surface
31
Creating a Swept Blend Feature
32
Creating a Swept Blend Feature
The Normal to Trajectory

option keeps each of the features 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
33
Creating a Swept Blend Feature - Examples
The Normal to Projection
34
Creating a Swept Blend Feature - Examples
2
1
3
4
5
35
Creating a Swept Blend Feature - Examples
Select the trajectory, if there is only one
sketch, it will be selected automatically
36
Swept Blend Feature - Example
2
1
3
4
5
Select a point and sketch the cross section
37
Select Insert when finished with the sketch
38
Creating a Variable-Section Swept Feature
Used to create complex geometric shapes. The
option sweeps a section along one or more
trajectories.
39
Creating a Datum Plane Tangent to a Curve at a
Point
A
40
Creating a Datum Plane Tangent to a Curve at a
Point
41
Sketch on the created datum plane
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