high feed rates

[Avarillas]

I still haven't figured out how to get my mori seiki to cut on a higher feed rate than 200 ipm

 

do I need a high speed code or parameter?

 

can anybody help?

 

Thanks

[Jerosu]

g08 look ahead

[Rick Henrickson The Boeing Co.]

+1 to jerosu

you need to add G8 P1

before your feed move otherwise the machine clamps at 200 ipm

[bhayden10]

Our Mazaks stop at 200 too. Will this work for them? They were all made in 1994-1996.

[Mcam Nut]

g61.1 on the mazaks, had 1 going 650 today

 

:EDIT: This was on a machine that can handle the feeds I dont reccomend attempting those feeds on a vtc

[Mark Baker CNC Software]

Keep in mind that once you have your "high speed" function turned on that High Speed Machines don't like the toolpath filtered. If you take idenical toolpaths and make the cut tolerance tighter on one (so there are more segments in the nc code), the tighter cut tolerance file will run faster on the machine. The "look ahead" functions like to have more segments so the vector change is smaller and allows for faster feedrates.

[Psychomill]

quote:

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g61.1 on the mazaks,

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IF you have the option. Look on your version page > options and check for "2D Shape contour" But at that age, you might be on a M32 board? M+ would be better. Either way, the older VTCs were good up to about 400-500ipm if its bolted down. But you had to stay on top of the machine alignments. The newer stuff rips through feed rates (FJV, VTC 200 and such)..