CNCOx - new Spindle pledge run

garlicbread · 28 November 2018 16:25

Hi All,
we’ve recently managed to overheat the spindle driver for the 400W Spindle on the Ox CNC
we could get another one for 55 quid, but this pledge run is for a 1.5Kw Air cooled spindle to replace it
since the 400W was kind of under powered anyway

1.5KW Air Cooled China Spindle with an ER16 Collet

https://www.ebay.co.uk/itm/EU-Stock-1-5KW-Air-cooled-Spindle-motor-ER16-1-5KW-inverter-VFD-Clamp-80mm/143014204368?hash=item214c4f93d0:g:YSwAAOSwLKpZhXZj:rk:6:pf:1&frcectupt=true
ER16 Collet size means we can add larger mill bits
1.5KW is about the max weight limit for this CNC, (a 2.2KW one would be much heavier)
Water or Air cooled costs about the same, water is quieter, but air cooled requires less maintenance and doesn’t run the risk of burning out if the water pump stops.
Typically it comes with a large metal bracket, this can be adapted to the back of the cnc with a 2nd wood bracket.
The VFD Will need to be programmed but I already have the details on how to do that (Richard)

Pledge Target £250.00

garlicbread (Richard) £80
muteDuck (Michael) £50
Alexander_Lang1 £50
Greg Morris £25
Mike Bratt £25
Mark Heywood £20

Running Total £250

The er16 collets I’ve ordered are around £30 so any spare will go towards that

muteDuck · 28 November 2018 19:39

I can pledge £50

Alexander_Lang1 · 29 November 2018 09:05

I’ll put in £50

Alex

Greg · 5 December 2018 19:04

I’m happy to put £25 in.

Greg

garlicbread · 6 December 2018 18:53

Hi All,
My parents have offered to throw 50 quid in so I’ve now placed the order for it
If anyone else still wants to throw a bit of cash in then your still more than welcome since i also need to get some er16 collets

I’ve ordered it from here, I figured I’d use the same supplier on ebay I used last time

https://www.ebay.co.uk/itm/UK-CNC-1-5KW-ER16-Air-Cooled-Spindle-Motor-1-5Kw-Inverter-VFD-220V-80mm-Clamp/254012736478?hash=item3b2456c3de:g:hucAAOSwi3tbHkdX

I’ve also ordered some collets (16pcs) from

https://www.amazon.co.uk/gp/product/B01NCBC0ZP/

There’s a roll of mains flex in the metal area I can use for powering the VFD.
I’ll just need to find a bit of 4 core to run from the vfd to the spindle
and make sure to earth the metal bracket (since china tends to disconnect the earth pin)

Many Thanks
Richard

Alexander_Lang1 · 6 December 2018 19:14

That is very kind of your Ma and Pa!

How do you want us to pay you for our pledges?

Cheers

Alex

garlicbread · 15 December 2018 23:39

The last update I had from telegram is that the moneys will go to hacman first then I’ll claim them back.
I think badspyro / Chris might be dealing with that / will provide account ref to use

I’ve tested both the spindle and the vfd and they seem okay.

I’ve got some 4 core shielded CY cable on order for VFD - > Spindle
ER16 collets still need to arrive
Bracket to attach to the cnc is nearly done (just need to drill some holes in the metal bracket)
I’ve now got a mains cable on the vfd so I’ll also get that programmed next as well (I can use the same values I used on mine)

Once the spindle is done, I’ll also be looking into replacing the cable chain with open / larger type to get cables in and out easier and putting the grbl controller / power supply / rpi into the server case underneath on the shelf.

garlicbread · 23 December 2018 22:12

Spindle is now wired up and working okay.
However before we can use the machine I need to hookup a relay so that the EStop switch will trigger the EStop on the VFD. If we just cut the power to the VFD then it would take longer for the spindle to slow down as it would just be coasting.
I might also redo the plug going into the spindle since I now have some spare plugs

I’ve currently got a relay on order with amazon at the moment which should arrive sometime in January.