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Defining Constraints And Relations On Solidworks Sketch Entities(Illustrated Expression)

Constraints and relations can be very useful tool in CAD systems. You can give various relations between sketch entities when you are doing your sketching in Solidworks. In this article, we will discuss about how to give relations and constraints to sketch entities in Solidworks, with a very basic example.

How To Define Constraints In Solidworks Sketching?

Adding relations to sketch entities in Solidworks.

For example we want to add parallel relation between two of these line segments as shown by red arrows above. What we need to do is, select the lines with your mouse by pressing Rshift button from your keyboard.

When you selected these lines, ‘Properties’ menu will automatically open. As you see from red box region, two of lines are selected. You can add extra sketch entities to that box by clicking or selecting from sketching in Solidworks.

Relations can be added between these lines will appear as shown in green box above. You can add relations by clicking on these relation types. For our case, click on ‘Parallel’ relation, then click on little yes button as shown by green arrow to complete the operation in Solidworks.

Parallel relation between skethes entities in Solidworks.

As you see above, two of selected lines are parallel from now on in Solidworks sketching. Parallel indicators are also appeared as shown by green arrows.

Adding tangency between line and circle in Solidworks sketching.

For example again, we selected a line and a circle that we want that line must be tangent to that circle in Solidworks sketching. What we did is, selected the required sketch entities as shown in green box, then clicked on ‘Tangent’ relation as shown by green arrow.

Tangency between a line and circle in Solidworks.

Defining relations between sketch features is like above in Solidworks sketching. When you select your skecth features, constraints and relations could be defined to these features will automatically appeared.

Do not forget to leave your comments and questions about ‘Defining relations between sketch entities in Solidworks’ below!

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