fanuc HSM

[T-bolt]

Scott_bob; DaveML,

I got a chance over the weekend to run your BPT test program. How does 8:17 run time sound? How about 3.75 max feed?.......... Phenomenal.

If the test has nothing to do with anything but BPT, how can a 15 year-old Tandy beat our Pentium? Sorry if I seem bitter, but that's more than a little depressing.

I hold out hope that this isn't exactly the whole picture, though. I am still studying which params I can change to get our machine out of what I think is perpetual ACC/DEC on programs like these.

While it would be silly to try to change the Komo to another control (it only really needs to cut out cabinet parts), I would be interested to find out how much the Numeryx system costs, as we have an older Morbidelli CNC point-to-point/router that we might be interested in resurrecting some time in the future. The current control is an ESA (?) with no hard drive (it does have a 720k floppy, though!), and it will run a max. 300 line program (no DNC available). Worthless. The machine itself moves quick though. So I got that goin' for me,.....which is nice.


Dave,

Thanks for the input; I called Fanuc for a quote on activating the AI Advance Preview Conrol (G05.1) option on our 210i. I would cost me 5 grand+travel & lodging for the tech. That's a little cost-prohibitive for me at this time, especially when I'm not exactly sure how much it would help. I would love to hear how Scott-bob's BPT test runs on your control. The program just runs the machine in a 4" circle that's actually 60,000 small line segments instead of circular interpolation.

Thanks, guys,


Jeremy Hill

[Scott_bob]

Jeremy,

Wow, that is really bad on the BPT!

That is the slowest control that I've seen tested. Sorry man...
I think you're on the right track for determining if there is a parameter you can set to make it go faster. The BPT program is good for this kind of development, as there is no angular change in direction that should be decelerated by the look ahead. And it is nothing but X and Y coordinate data movements. AIAC only works on linear interpolation (as far as I know), NO G02 or G03's...

Concidering the cost of that option from Fanuc, I'd get a quote from some of the PC based Retrofit companies around. Their performance is far better than Fanuc and they don't gouge you on Options that should be included in the control.

I'll send you your data on your BPT testing...

Best Regards,
Scott_bob

[Scott_bob]

To all,

I have updated the comparison charts here in HSM thread.

Anyone suprised about the Yasnak control?
I have always liked this control compared to the Fanuc.
Fanuc is good because it is an industry standard and a lot of us know how to run it.

Perhaps it's time for you to evaluate your CNC machines central nervious system?
Brain surgery for a CNC machine? Why not?

Sincerely,
Scott_bob

[Vikketsi]

Hi.

At first, sorry my worse english skill. Iam Finnish.

I Own Yang Eagle SMV-1000 milling centre with Fanuc 0MD-control. Problem is feed rates in arcs(G2, G3), example:

...
G1 X250. F600.; (Feed rate is always correct with G1)
G2 Y60. R30.; (Feed rates slown down dramatically, usually under 100)
G1 X280.; (Feed rate comes back to 600)

Second problem is when milling arcs high feed rates. Simple hole milling example:

G2 Y20. R10. F100.;
G2 Y-20 R10. ;

When i check hole diameter, its correct(with slow feed rate), when i raise feed rate, hole diameter gets smaller.

Is there some parameter what i can replace to fix this problem? Or some g-code what turn on/off hsm?