complete conversion kit for AMA25LV

[JAZZCNC]

Hi,

Please Don't take this wrong way John as I'm not putting or pulling you down but some of those suggestions I wouldn't take up on. Here's why.

The Drives are cheap but they are old analog techonlogy often easily affected by Resonance which affects performance and smoothness of motors. So With converting a milling machine which are often using a ratio then the operating rpm of the motors will fall in the mid band region of the drive/motor that is most affected by resoancne so not ideal really. Esp given that mills tend to be stiff and resonant anyway.
Newer digital drives are much better at handling resonance, giving a very smooth running motor, esp at lower speeds. Those Leadshine Closed loop steppers while expensive are perfect for creating a very accurate milling machine as they are Digital and Closed loop so very accurate, they are also 3 phase with 1.2deg step angle so give finer resolution with a very smooth motion.

The Motion control card is a good idea but not USB.! Ethernet is by far better.
I've tried just about every motion control card (including this one) and all that use USB give troubles in some way at some point. This is often down to electrical noise or the PC and how it's configured regards USB but still USB is flaky in my experience and prone to dropping out.
Often people blame control software when troubles starts when in fact it's often the USB port dropping out or being affected by some other windows process. This Esp true if the device is solely relying on the USB for power rather than having an external power source. USB is rubbish at providing stable power and should never be used or trusted.

For ballscrews then either Chai at linear motion bearings or Fred Lee on Ali express are the men to see. Either will machine ballscrews to any dimension you send and really not worth trying to do your self for what they charge. Fred Lee is the one I'd use as is screws do seem slightly better quality than Chai's.

If your converting a mill you may want to look at better quality than Class 7 (C7) and look towards C5. If you want much better then go for ground screws rather than rolled. Only use good quality angular contact bearings in nice solid and sealed mount as they take a pounding which soon becomes backlash.!!

The suggestions made by John will get you going and work ok-ish while being resonably cheap but IMO it's false economy as often components are much lower quality so die quicker with high potential for reliabilty troubles. The performance is often compromised by rough running motors or poor quality giving relliabilty issues with high potential for sleepless nights and much frustration. In my experience with all things CNC it really does payoff to spend that bit more on the electronics.
Some will say there machine runs fine with cheap components which maybe they think it does.? But often that is because they have never experienced a machine that uses quality parts and is setup correctly.!! . . . . . Many times i've visited machines which the owner never even knew they had issues with resonance etc and just accepted that was the Max performance the machine was capable off. When infact it was running like can of marbles and capable of much more with far smoother running motors.!