Creating Revolute Joints with Offset 
(Advanced Mode)

This task shows how to create offset revolute joints or centered revolute joints.

Prior to performing this scenario, you should be familiar with revolute joint creation in beginner's mode

aprereq.gif (1223 bytes) Open the Create_Revolute.CATProduct document.
Automatic switch to Design mode:

If you work with the cache system in visualization mode, you no longer need to use Edit > Representations >Design Mode beforehand as the switch to design mode is automatic (an eye appears as you point the product in the geometry or specification tree). All you need to do is click on the object.

  1. Click Revolute Joint I_RevoluteJntP2.gif (246 bytes) in the Kinematics joints toolbar or select Insert > New Joint > Revolute from the Menu bar. The Joint Creation: Revolute dialog box appears.

  2. Click New Mechanism. The Mechanism Creation dialog box is displayed:

    • Enter the name of your choice for the mechanism.

    • Click Ok when done

    In our example, keep the default name Mechanism.1.

    The Mechanism is identified in the specification tree
  3. Select the lines in the geometry area:

    • Line 1 = hinge axis

    • Line 2 = wheel axis

  4. Select the planes in the geometry area:

    • Plane 1 = left inner hinge plane

    • Plane 2 = left wheel axis surface

    The plane you select must be perpendicular to the hole axis previously selected

    For more information, refer to the "Conditions between selections" table for Revolute joints in About Joints


  5. Select the Offset option button. 
    Select the offset value for this, three methods are available:

    • enter the required value in the offset field 

    • use the scrollbar

    • right-click the field and select the measure item from the contextual menu displayed

    In our example keep the default value.

    If you perform a right-click in the offset value field, a contextual menu lets you select between two items: measure or change step

    Select the measure item: the Measure Between dialog box and Measure Tools toolbar appear

    Select two entities. Keep this measure as offset value. A warning message lets you copy the measure you defined.

    You can also change the step using Change step > new one

    For more information, see Specifying a Parameter Value as a Measure in the Knowledge Advisor User's Guide and Measuring Minimum Distances & Angles between Geometrical Entities and Points in the Space Analysis User's Guide

  6. Assign the Angle driven command if needed.

  7. Click Ok to end the Revolute Joint creation.

    The specification tree is updated.

Open the Create_Revolute_Offset.CATProduct to check your result.