Simulazione e Prototipazione Virtuale: Guida alla Modellazione di Parti in Inventor, Dispense di Disegno Di Macchine

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SIMULAZIONE E

PROTOTIPAZIONE VIRTUALE

ROADMAP

PART Definition

• 1 piece
• 1 volume (closed surfaces)
• 1 material
• several features

PART Features

• Sketched (“Create”)
  • 2D geometry (sketch) swept along a 3D path
  • May add or subtract material
• Placed (“Modify”)
  • Attached to existing geometry (points, lines, faces)

SKETCHED FEATURES

Extrusion

Revolve

Sweep

Loft

Etc.

Extrusion

• Closed Profile on a

2D Plane

• Direction
• Amount
• Extruded faces as

new planes

• Add or Subtract

Finished Product

Subtracting Material

Negative Extrusions

2D Profile used to subtract material at a specified length

2D Profile used to cut to selected surfaces or through all

Inventor: Extrude Dialogue Box

Profile definition Extents

Solid combining (join, cut, intersect, new solid)

Output: solid or surface

Direction

Inventor: Revolve Dialogue Box

Profile definition Extents

Solid combining (join, cut, intersect, new solid)

Output: solid or surface

Direction

Positive Revolves (^) Negative Revolves

Revolve vs. Extrude

• Not always extrusion
• Some objects difficult to

extrude

• e.g. Cones, wheels
• How would you create this

object with extrude?

• Reduce features

Sweep

Pathways can be combined with a 2D profile, such as a circle, to create what is known as a sweep

Mirror complex features to save time

Loft

Different shapes can be blended into one solid such as the hexagon is connected to the circles of different sizes

Circular patterns, fillets, and appearances can also be added

Other sketched features

Rib

Coil

Decal

Emboss