Beavermill conversion to CNC

I have been working on the main spindle assembly.
I change it to a toothed drive pulley instead of a V belt.
But as I find out this is not as easy as it looks.
First I redesigning the assembly in my new CAD/CAM module.

The first thing I did was making the core pieces to combine the different pulleys together .

Next thing I did was drill the pulleys.

I had to make a groove in the soft jaws so the pulleys would fit in to it.
And turn it to the right dimension of my pulley.

It is very important centering the piece so the deviation is minimal in this case 0.02mm both in axial and radial direction.
The belt will run smooth and with less vibrations.

Now the workpiece is ready for ruffing out and finishing .

Measuring our workpiece is very important in this case I want to have about 0.02mm play so there will be enough space to glue everything together with a strong adhesive .

Now it is time for facing the workpiece and break sharp edges .
I find it one of the most important things a good machinist got to do (break sharp edges) so our workpiece looks as it coming out a factory and not looks like it came out of the bin.
Kind regards,
Andre.


Experience is the sum of stupidities you have done.

After we made a keyway in the core piece of the motor side we started to glue all the pieces together .

Now it is time for some drilling operations.
First thing to do is make sure your workpiece is correct centered .
The next thing I do is make a centerhole.
Drill with the right size so the holes who needs tapping also can be don.
And break sharp edges.