RF30 (Round post drill/mill mods

[BillTodd]

You might be interested in the modifications I've made to my Nutool drill mill:

Wishbone stabiliser

CVT

Spindle brake:

{edit} More (and explanations) here:
http://homepage.ntlworld.com/bill_todd/drillmill/

 

[Omnimill]

Interesting stuff there Bill, Thanks for posting. Thm:

Vic.

 

[jackfrost]

What are all these things ?

Some more detail would help understand them.

Thanks

 

[mocaquita]

The CVT is a heck of a good idea! I'll have to check that out. Any problem with the belt slipping when you really need torque?

Dave

 

[BillTodd]

What are all these things ?

Some more detail would help understand them.

Thanks

Hi Jack,

The stabiliser keeps the head in the same vertical position when lifting and lowering the head

The CVT is a mechanical vari-speed using a scooter transmission.

The spindle lock -well I'm sure you understood that one

If you follow the link to my web site, there are links to the documented threads on other forums ( the modifications span a couple of years, so they are spread out a bit).

I'm happy to expand on anything here if you wish

Bill

 

[BillTodd]

The CVT is a heck of a good idea! I'll have to check that out. Any problem with the belt slipping when you really need torque?

Dave

Well I have drilled a 30mm holes without noticeable slippage. The main problem has been reducing the vibration; since the picture were taken, I have had to increase the spring pre-load and bolt the motor up tight, to get the vibration under control. I may make another motor/primary pulley shaft to improve the pulley's run-out.

Bill