Hi Boyd. My name is Matias Delgado and I am writing to you from Argentina. I really think you have done a very good job. I am interested in asking you if you have made a technical plan and a detail of the materials that you used to assemble the supports for the motors and sensors. If so, I would like you to share it with me. I tell you that I have a CQ6128 and I am about to start converting to CNC. Do you have any constructive details and some criticism to take into account before starting this task? I am already anxiously awaiting your answer. Regards
Hi Daniel. Mate I bought a standard Nema 23 kit off Aliexpress. As for fitting it to the lathe I had to design, manufacture and install all the brackets and hardware myself to suit. The electronics are the hardest part but as for the mechanical stuff you if as a machinist should be fine. So no kit really except for the CNC hardware. Although I still have the files for this particular lathe. Regards
Hi. I have a 4.5kw one on the shelf from G Penny I will use again one day. It was an 18000rpm model and took a bit of getting used too but for Alloy it was awesome. Steel I would not though its too high rpm. I replaced it with a 6kw ATC that runs to 24000 with a torque curve to match so am now machining a lot faster to keep the power. Both are air cooled, with zero overheat problems. So G Penny? Ive been back to them twice they are pretty good.
@@BoydSofield Hey Boyd thank you for your reply. My concern is running it on 240v single phaze, I'm not sure 10 or 15 amps will be enough. I'm looking at 12000rpm mainly for aluminium but I'd like to be able to do more exotic metals as well but primarily alloy.
I think the 4.5kw spindle only draws full amps at top RPM which in my case was 18000. I put 3ph into my workshop so didnt have that problem. My current one the torque curve is higher so my spindle rpm for alloy with a 3 flute 10mm endmill is around 14600rpm with a feed of around 1800mm/min. Its a huge rooster tail of chips, like crazy on the big jobs. Lose my coolant system, end of endmill. If you were interested I do have a couple of movies of my 4.5kw G Penny spindle in action. Hey also, if you want to machine alloy your machine needs to be super rigid and then more so. I chased that rigidity for several years to achieve it finally. Machine is about 1800kg. Anyways. If you can learn from my mistakes all the better. Oh, you should be able to draw all the amps you need you may need to install a upgraded circuit from your board. Use 6mm2 conductors or larger if you have a long distance from your supply. Your VFD will or should protect your spindle from undervoltage etc. So its all about going large and heavy.
