Outline of class
 1st part: How to make sketches
 Entities
 Relations
 Dimensioning
 2nd part: How to make features
 Starting/ending points
 Different kind of features
 3rd part: practice
Things that can be sketched
 Line
 Rectangle
 Slot
 Circle
 Arc
 Polygon
 Spline
 Ellipse
 Chamfer/Fillet
 Offset
 Trim
Line
Click on the line symbol
Line Options
 As sketched
 Horizontal
 Line will snap to be horizontal
 Vertical
 Line will snap to be vertical
 Angle
 Will define the line based on an angle
For Construction
 Will be used as a hidden line
Infinite Length
 Line is infinitely long
Rectangle
Rectangle Options
Corner Rectangle
 Assumes a horizontal rectangle
Center Rectangle
 Assumes horizontal
3 point corner rectangle
 Chose 3 points for the corners
3 point center rectangle
 Chose two points for a center axis
Parallelogram
 3 points for a parallelogram
Slot
Circle
Arc
Polygon
Spline
Start
clicking
Edit Spline
 Adjust arrows
 Change slope of tangent
 Add points (open spline tools)
 Chose ‘insert spline point’
Ellipse
1.
2.
3.
Define center
Define major axis
Define minor axis
Chamfer
Fillet
Offset
 Creates a copy of selected sketch entities a certain distance away
Trim
 Power Trim
 Trim all entities the mouse moves over
 Corner
 Connect two lines
 Trim away inside
 Cut lines passing through two entities
 Trim away outside
 Cut lines extending past two entities
 Trim to closest
 Cut the entity up to the next closest entity
Sketch Relations
 Relations add geometric constrains to the sketch entities
 Relations appear in green boxes by the entities they relate to
 Horizontal/Vertical
 Parallel
 Perpendicular
 Collinear
 Coincident
 Midpoint
 Intersection
 Tangent
 Coradial
 Concentric
 Equal
 Pierce
Horizontal relation
Geometric Relations
 Tangent
Horizontal
Vertical
Intersection
Parallel
Tangent
Concentric
Perpendicular
Geometric Relations
(These can be added automatically via hotpoints)
 Horizontal
 Straight left to right
 Vertical
 Straight up and down
 Parallel
 Midpoint
 Point will at the center of a
line/curve
 Intersection
 Point where two lines/curves
cross
 Lines side by side and having
the same distance continuously  Tangent
between them
 a line that touches a curve at a
point, but if extended does not
 Perpendicular
cross it at that point.
 at an angle of 90° to a given
line
 Coincident
 Coincident points will lie on a
line/curve
Geometric Relations
(These can only be added manually)
 Coradial
 Two arcs with the same center point and radius
 Concentric
 Two arcs/circles with the same center point
 Equal
 The driving dimension for the entities are equal
 Length
 Radius
 Pierce
 When there is a coincident reference to a different sketch
 Symmetric
 Add some symmetry about an axis/centerline
How to constrain
 Click ‘Add Relation’
 Select entities
 Make the relation
The Status of a sketch
Under defined
Fully defined
Over defined
Creating Basic Features
 Extrude Boss/Base Feature
 Extruded Cut Feature
 Revolve Boss/Base Feature
 Revolved Cut Feature
 Fillet, Chamfer
 Dome Feature
Extrude Boss/Base Feature
Where to start the extrusion
Can choose the angle of extrusion
Where to end the extrusion
Add a draft to the part
Can extrude in a second direction
Can extrude from a thin feature or
a contour
From
Sketch Plane
 The plane of the sketch
Surface/Face/Plane
 Can choose any face
Vertex
 Can choose a point for reference to start
Offset
 Can enter a quantity to offset from surface
Direction 1/Direction 2
 Blind
 Extrudes a specified distance
 Through All
 Goes through all bodies
 Up To Next
 Extrudes to the nearest feature
 Up to Vertex
 Up to a specified point
 Up to Surface
 Can choose a surface to extrude to
 Offset from Surface
 Can set a distance from a selected surface
 Up to Body
 Similar to surface, but can choose a whole object (body)
 Midplane
 Extrude in two directions with the current plane set as center
Draft
 You can use a draft to add an angle to the extrusion
 Useful for injection molding
Contours Vs. Thin Features
 2 Contours
 3 Contours
 Thin Feature
Thin Feature
 One direction
 Midplane
 Two-direction
 Sets the thickness of the extruded feature
Extruded Cut
 All options are similar to extruded boss/base
Revolve Boss/Base Feature
Axis of revolution
Where to end the extrusion
Can revolve from a thin feature or
a contour
Revolved Cut Feature
Fillet
Fillet Types
 Constant Radius
 Entire fillet has a constant radius
 Variable Radius
 Radius varies
 Face fillet
 Full round fillet
 Rounds off bosses or ribs
Chamfer
Dome
Practice
Practice
Additional Stuff
Sweeping
 Normal extrusion restricts your extrude to a linear path.
 Sweeping is when you extrude along a path
Sweeping
 In order to sweep, you need two things
 Sketch profile
 Path sketch
 The path must start in/on the sketch profile.
Lofting
 Lofting is when you have multiple cross sections, and the part
extrapolates the extrude from cross section to cross section
Lofting
 Need to make multiple sketches of multiple cross sections
Additional Stuff
 Mirror
 Patterns
 Shell