<< Click to Display Table of Contents >> Navigation: MechDesigner Reference & User Interface > 2.2 Mechanism-Editor: > Kinematic elements > Add Ball-Joint |
2x Ball-Joints in MechDesigner |
Rod-End Bearing |
2 x Ball-Joint in |
Terminology:
Ball-Joint : |
A Ball-Joint makes a Point in a Connecting-Part coincident with a Point in a different Part. You must add 2 x Ball-Joints to add a Ball-Joint to each end of a Connecting-Part : •1 x Ball-Joint between Points in different Parts that are in the active Mechanism-Editor. •1 x Ball-Joint between Points in different Parts that are in different Mechanism-Editors. |
Spherical-Joint : |
The kinematic and equivalent term for a Ball-Joint. |
Kinematics-Tree : |
Joints in a Dyad use the letter S for a Ball-Joint. For example, the R-S-S and P-S-S Dyads. |
Derived Names: |
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Connecting-Part : |
A Part with a Ball-Joint at its start-Point and at its end-Point |
Part that is Completely-Free : |
A Part with 3 degrees-of-freedom (no joints) |
Part that is Free : |
A Part with 1 or 2 degrees-of-freedom |
See also: Ball-Joint dialog, Connecting Part Length and Diameter.
See also Ball-Joint configurations
A typical preparation: |
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A typical prerpation for Add Ball-Joint |
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Mechanism A
Mechanism B - the active Mechanism-Editor
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Notes:
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Do Add Ball-Joint two(2) times. One time to each end of the Completely Free Part. |
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STEP 1: Start the Add Ball-Joint command
STEP 2: Add Ball-Joint #1
When you do Add Ball-Joint #1 you can see the Ball-Joint symbol. However, Points do not snap together before you do Add Ball-Joint #2
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STEP 3: Add Ball-Joint #2
Result
If the arrangement of the Parts that were Completely-Free and Free is not correct, then see Change-Dyad Closure |
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Kinematics-Tree
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Notes: •You cannot add Solids to Connecting-Parts. |
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To edit the Length of the Connecting-Part
To edit the Symbolic Radius of the Connecting-Part
To edit the symbolic diameter of the Ball-Joint - see Ball-Joint dialog Notes:
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