STEP 1 : Add the Belt-Path:
Edit a Part, and sketch a sketch-loop with Lines and Arcs. The sketch-loop will become the path of the Belt.
Make sure you add a dimension to each Arc. Also, it is best to make the sketch fully constrained (the sketch should be black)
STEP 2 : Add a Motion-Point to the Belt-Path.
Do Add Motion-Path FB and select the sketch-loop. This adds a Motion-Point to the 'Belt'.
The Motion-Point indicates the motion of the Belt.
STEP 3 : Add a Part that will become the Pulley
Add a rotating-Part : its Pin-Joint at the center-Point of an Arc in the sketch-loop. The rotating-Part becomes a Pulley.
The rotating-Part may be:
oa kinematically-defined rotating-Part (Green)
oa freely rotating-part (Blue)
STEP 4 : Do Kinematic-elements toolbar > Add Pulley:
See the Command-Manager to select the correct elements.
•If the rotating-Part (Step 3) is a kinematically-defined Part:
othe Motion-Point (on the Belt) becomes driven by the motion of the rotating-Part.
oThe rotating-Part becomes a Driving Pulley.
oThe default color of a Driving Pulley is Cyan.
oThere is a maximum of ONE Driving Pulley in one belt/sketch-loop.
- or -
•If the rotating-Part (STEP 3) is not a kinematically-defined Part:
othe rotating-Part becomes driven by the motion of the Motion-Point on the Belt.
oThe rotating-Part becomes a Driven Pulley.
oThe default color of a Driven Pulley is Magenta.
oThere is no limit to the number of Driven Pulleys in one sketch-loop.
Kinematics of Pulley-Rocker
The complete kinematic-chain is the:
oPart, with a
oPin-Joint, and a