Fixed Pulley Centres
This means the centre of each pulley does not move in the relative to the machine frame [Base-Part]
|•||We add the sketch for the belt path to the Base-Part. |
|•||Each Pulley is a rotating-Part joined to the Base-Part with a Pin-Joint.|
A Pulley Part can be a:
|•||Drive Pulley |
The Drive Pulley is kinematically-defined with a motion before you use Add Pulley.
The Drive Pulley rotates to move the Belt.
Linear Motion of Belt =
Drive Pulley Radius x Drive Pulley Angular Motion
|•||Driven Pulley |
The Driven Pulley becomes kinematically-defined by Add Pulley.
The Driven Pulley is rotated by the Belt.
Angular Motion of Pulley =
Linear Motion of Belt / Pulley Radius.
When Pulleys have Fixed Centres, the:
|•||Pulleys are , with Pin-Joints at the centre-Points of the Arcs in the sketch-loop in the Base-Part|
|•||Use the Pulley dialog-box to edit the Number-of-Teeth of each with the |
|•||The 'Belt' is a sketch-loop|
|•||When the Pulleys are on fixed-centres, add the sketch-loop to the |
The Pulleys or the Belt move with a specified motion.
When the motion is specified for the:
|•||Belt: We use a Motion-Path FB to define the motion of a Motion-Point along the sketch-loop on the Base-Part. Then, the Pulley's motion comes from the Belt's motion.|
|•||Pulley. We use a Motion-Dimension FB to define the rotation of the Pulley. Then, the Belt's motion comes from the Pulley's motion.|
To be a Drive Pulley, the Part must be kinematically-defined before you apply to it the Add Pulley command.