Replacing a Mate with Two Mate Primitives

Next, you replace the concentric Piston Female Rotate mate with two equivalent mate primitives to remove this redundancy.

A mate primitive is a mate that constrains at most two degrees of freedom. By replacing a mate with a mate primitive, you can remove redundant constraints on a component by limiting degrees of freedom on the component one at a time.

The Piston Female Rotate mate constrains four degrees of freedom, when only three are required. In addition to constraining the horizontal axis rotation, and the horizontal and vertical translation, this mate redundantly constrains rotation about the vertical axis.

  1. Expand Mates (MotionManager tree), right-click Piston Female Rotate and click Delete from motion study .
    Click Yes if prompted to confirm the deletion.
  2. In the FeatureManager design tree, expand my_piston female<1> and select Axis2.
  3. Click Mate (Assembly toolbar) or Insert > Mate.
  4. In the graphics area, select the connector edge Edge<1>@my_connector-1 shown.
    Click No if the Update Initial Animation State dialog box appears.
  5. In the PropertyManager, for Standard Mates, click Perpendicular .
    Click No if the Update Initial Animation State dialog box appears.
  6. Click .