Tutorial: Flange with Equations

Chapter 4

Feature 1 – Extruded Circle

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 2 – Construction Plane

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 3 – Extruded Boss (Drafted)

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 4 – Extruded Cut (Drafted)

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 5 - Fillets

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 6 - Fillet

• Different radius than previous fillets, so added as a separate step

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 7 - Rib

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 7 (cont.)

• To create this sketch, the silhouettes of the fillets as they intersect the sketch plane are converted into arcs in the sketch

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 7 (cont.)

• A line is added that is tangent to both arcs

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Coincident

Tangent Coincident

Tangent

Feature 7 (cont.)

• Excess portions of the arcs are trimmed away

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 7 (cont.)

• Lines are added to close the sketch

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 8 – Revolved Cut

• Because the top of the rib is flat (created by extrusion), it matches the contour of the fillet only at the mid-plane of the rib

• The mismatch between the two features needs to be removed

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 8 (cont.)

• Rather than creating a new sketch, the sketch used to create the rib can be re-used and edited

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 8 (cont.)

• The revolved cut allows the rib and fillet to intersect smoothly

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 8 (cont.)

• Note that the shared sketch is indicated by the hand under the sketch icon

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Feature 9 - Draft

• Since the direction of the draft is not the same as the extrusion direction of the rib, the draft is added as a separate feature

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Direction of Draft

Feature 10 – Circular Pattern of Ribs

• Note that the draft is patterned as well

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Features 11, 12 – Extruded Cut (Hole) and Circular Pattern

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Renaming Features

• Renaming features will be helpful before adding equations

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Equation 1

• Number of holes = number of ribs• Number of holes is the independent parameter• Number of ribs is the dependent parameter

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Equation 1 (cont.)

• Changing number of ribs causes number of holes to change

• Second equation is needed to place holes between ribs

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Equation 2

• Degrees between ribs = 360/(# Ribs)• Angular position of first hole is one-half of angle

between ribs = ½*(360/(# Ribs)) = 180/(# Ribs)

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

Equation 2 (cont.)

• Changing number of ribs now changes number of holes and places holes between ribs

INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009