Three example Trace-Points
STEP 1:Start the Add Trace-Point command
STEP 2:Click a Point
* Start-Point, End-Point, center-Point, or Point.
See below, also: How to drag a Point with a Trace-Point.
If the Select-Element dialog-box opens, you have clicked more than one Point.
STEP 3: Complete the command
The Trace-Point is now in the graphic-area.
Video: Add Trace-Point
Normally, when the Mechanism-Editor is active, you cannot move a sketch-element that is a child to a Part.
However, it is sometimes useful to search for a good Trace-Point, by moving the Point.
You can drag Points in the Mechanism-Editor if ALL of these conditions are met:
The Point must be a Point - that, is, it cannot be a start-Point, end-Point or center-Point.
In the Part-Editor:
a.You do: Part-Editor > Add Point
Also, in the Part-Editor
b.You do not add a dimension or a constraint to the Point
In the Mechanism-Editor:
c.You add a Trace-Point to the Point
Then, you can drag the Point and the Trace-Point in the Mechanism-Editor.
To drag the Point more easily:
•Reduce the Number-of-Steps to ~30 in the Machine Setting dialog-box
and / or
•Drag the Point and then keep the mouse-pointer very still until the Trace-Point moves.
Add a 2D-Cam.
The Point whose locus you want to see relative to a different Part is the center-Point of the Cam-Follower.
1.Edit the Part with the Point
2.Add a Circle with its centre-Point coincident with the Point.
3.Then, exit the Part-Editor
4.Add a Profile to the Circle
Add 2D-Cam - you must select two elements:
5.Cam-Part: Select the Part in which you want to show the Trace-Point
6.Follower Profile: Select the Profile of the Circle (see 1)
To show the Trace-Point
7.Edit the 2D-Cam (see 2D-Cam dialog-box) and show only the Pitch-Center
The locus of the Pitch-Centre is the Trace-Point of the Point relative to the Cam-Part