Why use a Motion-Path Function-Block?

See also Motion-Path dialog-box

Motion-Path FB

When you add a Motion-Path FB to a sketch-element, MechDesigner adds a Motion-Point to the sketch-element* at its start-Point.

The motion-values at the input-connector to the Motion-Path FB specify the moiton of the Motion-Point along the sketch-element.

Applications of a Motion-Path FB and Motion-Points include to:

define the path of a robot,
define the path of a chain or belt, and also
define the motion for Ram-R and Ram-P dyads.

* Sketch-element can be: an open sketch-path, or a closed sketch-loop. The sketch-loop may be 'crossed (8)' or 'not-crossed (0)'.

Add Motion-Path FB

Toolbar :

Kinematics FB toolbar

Add Motion-Path FB

Motion-Path FB

Menu :

Add menu > Add Motion-Path FB

Add :

STEP 1: Add the Motion-Path FB to a sketch-path and graphic-area
1.Click Add menu (toolbar) > Add Motion-Path FB

The Command-Manager has one selection-box.

2.Click, in the graphic-area, a sketch-element that is in a sketch-path
3.Click OK-tiny-13-17 in the Command-Manager

The Motion-Path FB is now in the graphic-area

There is a Motion-Point at the start-Point of the sketch-element you select as the sketch-path.

Open :

STEP 2: Open the Motion-Path dialog-box
1.Double-click a Motion-Path FB in the graphic-area

- or -

The Motion-Path FB dialog-box is now open.

Dialog :

Motion-Path FB dialog-box

Notes :

Do not add sketch-elements to a Motion-Point. You should add sketch-elements to a Part that you join to the Motion-Point with a Pin-Joint.

Compare : Motion-Path FB and Motion-Dimension FB

A Motion-Path FB / Motion-Point can be compared with a Motion-Dimension FB / Motion-Part.

Function-Block :

Motion-Path FB <

> Motion-Dimension FB

Motion Element :

Motion-Point <

> Motion-Part

Constraint :

Sketch-Path <

> Joint

Input :

Motion-Values at its input-connector <

>Motion-Values at its input-connector


Motion of a Motion-Point constrained by a sketch-element <

> Motion of a Motion-Part constrained by a joint

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