2009

Add Constraints to the First Sketch
In this exercise, you practice adding geometric constraints to an existing sketch
containing three closed loops. In some cases, you can greatly reduce the
number of dimensional constraints required on a sketch.
This exercise contains geometry that does not meet design criteria and requires
additional geometric constraints to comply with the design intent.
TRY IT: Add constraints to the first sketch
1 On the standard toolbar, click the Look At tool, and then select any curve.
The plan view is displayed.
2 Click the Zoom All tool on the standard toolbar to view the three loops.
3 In the browser, double-click Sketch1 to make it active.
4 On the standard toolbar, click the Zoom Window tool, and then draw a
window around the sketch loop on the left.
The sketch loop is centered on your screen.
5 Right-click the graphics window, and select Show All Constraints. The
current sketch constraints are displayed.
6 Move the cursor over the constraint glyphs to highlight the sketch
geometry that is constrained.
In this example, you want the sloping lines in the sketch to be vertical,
so you now add a vertical constraint.
7 Right-click the graphics window, and select Hide All Constraints.
8 Click the down arrow beside the Constraint tool in the 2D Sketch panel
bar, and then click the Vertical constraint tool.
NOTE The cursor displays the constraint type. In this case, the vertical symbol
is displayed.
Add Constraints to the First Sketch | 33