I got this idea for a CNC machine controller.

[underthetire]

Simple, they don't use PC's. They make there own hardware and software. Hell, Okuma way back, like 1982 was running twin 16 bit controllers, then in very early 90's twin 32 bit.

Here is an article worth reading, but notice the date-1999. Now we have AI nano smoothing, super nurbs, among lots of other capabilities.

Understanding NURBS Interpolation : Modern Machine Shop

[podolskiy]

Simple, they don't use PC's. They make there own hardware and software. Hell, Okuma way back, like 1982 was running twin 16 bit controllers, then in very early 90's twin 32 bit.

Here is an article worth reading, but notice the date-1999. Now we have AI nano smoothing, super nurbs, among lots of other capabilities.

Understanding NURBS Interpolation : Modern Machine Shop

I got the idea of this NURBS interpolation. Sounds like a human-friendly way to compress a bulk of discrete data. From a mathematical point of view, there is really no difference between interpolation and data compression. Unless you have all the mathematical formulas punched into the controller to "restore" a curve that an engineer had in mind when the part was drafted. But there is an easier approach, I think: allow mathematical functions in G code.

So I am not sure whats wrong with sending data to the machine dot-by-dot. The bit is still following a path, determined by discrete data sets.

[underthetire]

You need to keep in mind, it's 1000+ blocks a second to the servo controls, but it's way more data back from the servo controls to hold position and contour. It's not just sending data, it still has to compute servo error, slow down/ramp up speeds for cornering, spindle and z axis positioning for taping/threading, all the rest of the machine signals I/O for tool changer, lube system, machine errors, timers, etc. I can remember old 286 computers on some very low end equipment that would totally bomb out and run an axis to its limits. I'm not saying its not possible to build something new, just not real easy. And how would you do tool offsets/fixture offsets? Those are all machine specific.