What is a Mechanism?

A Mechanism, in the context of the Add Mechanism command, is a Mechanism-Editor.

To add the first Mechanism-Editor you must select a Plane in the Model-Editor.

The XY-Plane of the new Mechanism-Editor is coplanar with the Plane you select - we call the XY-Plane of each Mechanism-Editor the Mechanism-Plane.

IMPORTANT: Gravity Vector.

The direction of the Gravity Vector is in the negative Y–axis [downwards] direction of the Model-Editor. You cannot edit its direction.

Thus, when you add your first Mechanism-Editor, please ask yourself the question as to which Plane you should select.

For example, a rotary liquid-filing machine is usually horizontal. Thus, select the Top Plane or if you add a new Plane, it should be parallel with Top-Plane.

Add Mechanism


Model toolbar > Add Mechanism

Menu :

Add menu > Mechanism sub-menu > Model sub-menu > Add Mechanism

Model Toolbar

Model Toolbar

STEP 1: Click Add Mechanism

Add menu > Mechanism sub-menu > Model sub-menu > Add Mechanism

- or -

Model toolbar > Add Mechanism

Command-Manager - no elements

Command-Manager - no elements


The message in the Command-Manager is:

Add new Mechanism-Editor

Hint: Select a Plane

Command-Manager - with Plane element

Command-Manager - with Plane element

STEP 2: Click a Plane

Click the Plane in the graphic-area or the Assembly-Tree.

STEP 3: Click OK-tiny-11-15 in the Command-Manager

You will immediately jump to the new Mechanism-Editor.

Its XY-Plane is coplanar with the Plane you select in STEP 2.

We often refer to the XY-Plane of the Mechanism-Editor as the Mechanism-Plane.

About the NEW Mechanism-Editor - and the Graphic-Area

Graphic-Area of new Mechanism-Editor

Graphic-Area Mechanism-Editor


The new elements in the new Mechanism-Editor:

Red-14-1b : Base-Part has a rectangular Green Part-Outline.

Red-14-2 : Mechanism name-tab ;

Red-14-3 : Contextual Toolbars ;

Red-14-4 : Graphic-Area ;

Red-14-5 : Local XY-axes and origin of the Base-Part, the NEW Mechanism-Editor, and Mechanism-Plane.


From the Front-View: of the new Mechanism-Editor:

The +X–axis is horizontal and to the right [ > ].
The +Y–axes is vertical and upwards [ ^ ].
The +Z–axis is towards you [◎]

The NEW Mechanism-Editor - and the Assembly-Tree

Assembly-Tree and the new Mechanism-Editor

Assembly-Tree and the new Mechanism-Editor


Plane4 is a child to the Front Plane, which is also a child to the Model-Editor.
Mechanism2 is a child to Plane4

Plane4 is frequently termed the mechanism-Plane

BasePart2 is a child to Mechanism2.
BasePart2 is the fixed Part
The Origin and XY-Plane of Plane4, Mechanism2, and the BasePart are all coplanar and coincident.


'Expand' then 'Play'

How to...

Add a new Mechanism-Editor to a Plane in the Model-Editor.



Tutorials and Reference Help Files for MechDesigner and MotionDesigner 14.2 + © Machine, Cam, Mechanism, and Motion Design Software by PSMotion Ltd