Hsm Machines

[rollie]

I'm a newcomer to this site.I will be entering the hsm ring shortly and I'm interested in all the info I can get.We are currently looking at Makino,OKK,Mori.and Mikron any input on controllers or HSM in general would be great.

[Rekd]

Welcome to the forum. I've used OKK and Mori's, the Mori was my favorite.

If you're serious about HSM, maybe you should look at Boston Digital. They make a suhwheet machine. But you're gonna pay a huge price.

'Rekd teh drooling

[rollie]

What about controls do you have a favorite.
Fanuc Heidenhain Mitsubishi any input helps.
Did you like the Mori controller

[rollie]

I also have a meeting with Mikron this afternoon.
I'm interested in Makino and OKK also

[Rekd]

Originally posted by rollie What about controls do you have a favorite. Fanuc Heidenhain Mitsubishi any input helps. Did you like the Mori controller

I prefer the Mori over the OKK, and all the fanuc's I've used I really can't stand. Fadal was my all time favorite, mostly because of the 'normal' keyboard. HAAS is my second fav, and the Bosto is my third, only because I didn't get to spend too much time on it.

'Rekd

[rollie]

I will be doing alot of 3d programming with surfcam for core and cavity injection molds.Mostly cutting around HRC 40 material.Where can I get more info on the Heidenhain control.

[viperdm100]

I'm new to this site also and it was nice to here the input from eveyone .I have a machine with a high speed controller and no one ever quite explained it that way .

I'm having trouble with the tool gouging on a remachine program ,which is when you finish your tool you go back and clean-up the radii with a smaller cutter . I'm cutting cast aluminum molds ,any input would be helpful .

[HuFlungDung]

Controlling servo lag is the likely culprit. What it boils down to is that the positioning accuracy of the machine is compromised due to high feed rates. It takes an extremely high servo update rate to maintain any kind of position control during high feedrate moves. This causes a lateral displacement of the machine table which "offsets" the surface a little bit from the theoretically perfect position. When you recut, approaching from a different angle, or using different feedrates, then the "blended motion" of your previous high feed path is no longer applicable to the new path, so then the gouging occurs as the servo is now positioning a little bit differently than it was before.

All you can really do is to make sure that your servoes are tuned as tight as you can get them, to minimize overshoot. This can make a world of difference.

Then slow down your feedrates until the positioning overlap is acceptable between the two passes.

My 2 cents.

[Rekd]

Originally posted by viperdm100 I'm new to this site also and it was nice to here the input from eveyone .I have a machine with a high speed controller and no one ever quite explained it that way . I'm having trouble with the tool gouging on a remachine program ,which is when you finish your tool you go back and clean-up the radii with a smaller cutter . I'm cutting cast aluminum molds ,any input would be helpful .

Hi viper. Welcome.

What software and machine types?

My first guess would be check the toolpath tolerance in the software.

:edit:
second guess; +1 to what dung said
:/edit:

'Rekd

[DavidB]

i have a new OKK VM7 with a fanuc control.We do high speed cutting on this machine with fantastic results.I also have a machine with a heid controller.If you were going to do any any programing on the controller id pick the heid controler anyday.

[Rekd]

David, how old is the OKK, as the one I ran was 10ish years ago.

'Rekd

[hardmill]

You guys took off w/ this thread

Boston Digital is now owned by Mikron and from
actual experience I would not recommend these
machines. Especially the mikron.

Makino - good

roeders- good

OKK is supposed to be a pretty tight machine.
Know a guy who owns 4 and he's in love w/ them.
I also know a dealer who sells all types, he says
OKKs his favorite.

Yasda - hands down the best of the best. with a price tag
to match, but as they say you get what you pay for. Definetly
the best machines out for high speed and hard machining.
I had 2 at my last shop.

As far as controls go i did'nt care for the heidenhein,
I'm a FANUC guy all the way.
Everyone uses them , so with that said "how can that many
people be wrong?"

Thats all i got to say about that
PEACE