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Table Of Contents
604 | Chapter 20 Combining Parts and Surfaces
To hollow out the lens sheath
1 Activate the front view, and sketch a circle on the work plane.
Context Menu In the graphics area, right-click and choose 2D Sketching
Circle.
2 Profile the sketch.
Context Menu In the graphics area, right-click and choose Sketch Solving
Single Profile.
Three dimensions or constraints are needed to solve the sketch.
3 Use
AMADDCON to constrain the sketch to be concentric with the lens
sheath, responding to the prompts.
Context Menu In the graphics area, right-click and choose 2D
Constraints Concentric.
Valid selection(s): arc, circle, or ellipse
Select object to be reoriented: Select the small circle
Valid selection(s): arc, circle, ellipse, or work point
Select object to be made concentric to: Select the large circle
Solved underconstrained sketch requiring 1 dimensions or constraints.
Valid selection(s): arc, circle, or ellipse
Select object to be reoriented: Press
ENTER
Enter an option
[Hor/Ver/PErp/PAr/Tan/CL/CN/PRoj/Join/XValue/YValue/Radius/Length/Mir/Fix]
<eXit>: Press
ENTER
4 Use AMPARDIM to dimension the sketch to the value shown.
Context Menu In the graphics area, right-click and choose Dimensioning
New Dimension.
5 Make the isometric view active and use AMEXTRUDE to extrude the sketch to
hollow out the lens sheath.
Context Menu In the graphics area, right-click and choose Sketched &
Work Features Extrude.