What is a Point-Cloud?

A Point-Cloud is a set of dimensional coordinates that specify the outline of a 2D object. For example, the object is a cam.

The dimensional coordinates are found by measuring a cam, frequently with a Coordinate Measurement Machine (CMM).

Point-Cloud FB dialog-box

Use the Point-Cloud FB dialog-box to import data and then fit a smooth curve to the data. The curve is mathematically smoother than the Point-Cloud data.


Application Note: Reverse-engineer a 2D-Cam.

Measure an old Cam, import the Point-Cloud and define it as a new Curve in the Point-Cloud dialog-box.

Use the curve, in combination with a Magnetic-Joint and a Graph FB to find the motion of a Cam-Follower.

Use the tools in MotionDesigner to replace the motion with a 'smooth' motion-law.

Redefine the motion of the cam-follower with the smooth mathematical motion-law, and add a 2D-Cam.

Finally, you can recalculate cam-coordinates.

Point-Cloud FB

Add Point-Cloud FB

[Above Graphic-Area]: Modelling FB toolbar > Point-Cloud FB

Menu:

Add menu > Add Point-Cloud FB

Dialog-box:

Point-Cloud dialog-box

What to do:

STEP 1.Add the Point-Cloud FB to the graphic area

A Point-Cloud is a child to Part.

1.Click Modelling FB toolbar > Add Point-Cloud FB

The Command-Manager shows one selection box

3.Click OK in the Command-Manager

The Design-Set FB is now in the graphic-area and the Assembly-Tree.

Result:

The Point-Cloud is an element that is child to the Part.

Edit:

STEP 2.Edit the Point-Cloud FB to open the Point-Cloud dialog-box
1.Explore the Assembly-Tree to find the Point-Cloud that is a child element to the Part
2.Double-click the Point-Cloud FB to open the Point-Cloud dialog-box

-or...

...see 'How to open a Dialog-Box'.

Video:

See YouTube: http://youtu.be/IME9Eb4mpQE

 

Tutorial and Reference Help Files for MechDesigner and MotionDesigner 13.2 + © Machine, Mechanism, Motion and Cam Design Software by PSMotion Ltd