I have only x and y installed but im really happy with it so far. Im making my own z quill adapter using the x y just doing a manual z Movements. I couldn't wait to see some chips fly so i found some material and made a plate for my car.
Re: Jet knee mill
Posted: Sat Nov 16, 2019 9:31 am
by Eliw03
Nice job! Keep us posted on the quill adapter.
Re: Jet knee mill
Posted: Thu Nov 21, 2019 8:02 pm
by cnckeith
Right on! Awesome..thanks for making the video looks great! love the o-ring groove machining. thanks for posting. looking forward to seeing more parts!
Re: Jet knee mill
Posted: Sun Dec 15, 2019 3:38 am
by taylork057
Eliw03 wrote: ↑Sat Nov 16, 2019 9:31 am
Nice job! Keep us posted on the quill adapter.
i made another video that has it in there but do not go into specifics. go to 2:45
Re: Jet knee mill
Posted: Sun Dec 15, 2019 3:42 am
by taylork057
quill parts..
Re: Jet knee mill
Posted: Mon Dec 16, 2019 2:23 pm
by martyscncgarage
As I mentioned in the comments. Would like to know if your mill was 2 axis CNC originally or you swapped XY to ballscrews (or not) and do go over the Z axis in a little more detail. That would be great and servce as inspiration to others.
I have a friend with an ENCO 9x42 knee mill he wants to convert. Having trouble finding someone with an XY Yoke or at least dimentions for the ball nuts.
Thanks so much for posting your experience with Acorn and sharing your videos!
Marty
Re: Jet knee mill
Posted: Mon Dec 16, 2019 4:12 pm
by tblough
Marty,
I ended up buying my ballscrews and yoke from Hiwin in Chicago. Deal with them direct and you'll get reasonable prices. Order all three parts together (2 screws and the yoke) and you'll get 20% off.
martyscncgarage wrote: ↑Mon Dec 16, 2019 2:23 pm
As I mentioned in the comments. Would like to know if your mill was 2 axis CNC originally or you swapped XY to ballscrews (or not) and do go over the Z axis in a little more detail. That would be great and servce as inspiration to others.
Hi Marty, Thanks for all of your work, it has helped me tremendously !
Its a 2008 Jet Knee Mill.. x asis power feed only. It does have new Accurite DRO too.
I am still using the std acme screws..008 X .0065 backlash Circles show obvious spots where tool unloads due to backlash. I could try and tighten it but my screw is really tight on the ends if tightened it any more. I need ball screws but im considering buying a older haas or other vmc and converting it. I haven't made my mind up yet.
I have all my drawings available for free on my cad grab. I can make them for him for cheap. Part numbers below for pulleys/belts. My setup is very hobbyist and is not refined very much.