Cross Belt Drive

Ananth Narayan

6 Dec, 2018 02:39 PM

I started investigating about making cross belt Pulley, but had no correct resource so started to think and finally revealed with trick and idea. Here it is:

1. Step 1: Procedure:

   Draw two circles apart may be of equal diameter or different one. Use Bi-tangent line to create cross tangent line and trim off the inner most part as shown:

   
   

   

   
   

   Next use output feature (command: c:Output feature) to separate two tangent lines.

   
   

   

   
   

   Also measure distance between point of contact of tangent line to local co-ordinate system and was found to be 162.53234 mm.

   

   
   

   From here we have to remember the thickness of belt say 5 mm thick and 10 mm long.

   Now extrude the two partial circles draw to the value of length (5 mm) with mirror extent.

   Next create a plane (my case zx plane) to copied distance:

   

   Now sketch a line on newly created plane as shown:

   

   
   

   Exit sketcher, now the most trick part coming;

   using boundary tool create line on all end of partial circle:

   
   

   

   Using spline create a spline touching these points:

   

   
   

   Now create another spline for other 3 points on one side; Use multisection surface to create surface;

   

   
   

   Now repeat the procedure for other side of pulley with final surface it should look like:

   
   

   

   
   

   Now join all surface and thick them for 5 mm (in this instance) and should look like:

   

   
   

   Model can be downloaded from: Tutorial and my practice.