Fanuc 18i_M Machining Speed

[Markiewicz55]

Hi, I am looking at purchasing a Mitsubishi MV5 mill with Fanuc 18i-M control a 2000 model year. My question is related to running high speed machining paths on it. It says it can machine up to 400"/min. Which is plenty. But does anybody have any experience with running modern high speed paths. I use fusion 360 and cut aluminum and use a lot of the high speed roughing passes. Can the control process the high speed paths? Up to like 250"/min would be fine.

I would hate to buy the machine to find out it cant run over 75"/min or something.

Thanks Much!

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[memoryman]

That control is a 18iA. High speed machining may require hardware/software options, What are the current specs for that machine?

[Markiewicz55]

It is from a machine dealer. Is there certain specs I could ask them about? It has 1181 "/min rapids with a said 400"/min feed.

[memoryman]

400 ipm is pretty fast. I am not sure how the control is configured to accommodate that, and if options have to be installed/activated for this. My option list is rather cryptic.
Can the dealer give you the NC parameter file (has to download it) and the MINFO file? (has to download it)

[Markiewicz55]

Getting them to download those files might be a stretch. I don't known the relationship between being able to cut at a feed of 400"/min and that of processing the code fast enough to run toroidal tool paths. I really want this machine for its other specs but I can't get much clarity on its performance. Its not a local dealer so that makes things harder. Thanks

[generaldisarray]

I would strongly suggest you take a program and try to run it. You dont have to actually cut anything to see if it acts like one of these hobbled up Haas mills.

I dont know if G08.1 /G05.1 was a thing in 2000. Plus Mits mills are not usually sold as upmarket machines, right?

[Markiewicz55]

"Plus Mits mills are not usually sold as upmarket machines, right?"

Not sure what you mean by this. Can you explain. I don't know much about the history of Mitsubishi Mills to be honest.

[generaldisarray]

"Plus Mits mills are not usually sold as upmarket machines, right?"

Not sure what you mean by this. Can you explain. I don't know much about the history of Mitsubishi Mills to be honest.

I just dont remember them being sold with alot of included fancy options. More of a robust production machine.

[rcs60]

It is about how many blocks that the control can look ahead and what type of programming that you are doing
you maybe able to achieve 400ipm in a straight line/long arc but can the control process the information fast enough to do dynamic/tricordal or any of the other types of cam programs that use many line/arcs with small moves to machine the part