Inverse time in X2_MR2

[gcode]

I'm working up a post for a new machine

Mighty Viper B-4000

 

and I'm having trouble with inverse time feedrates.

The machine is blasting through full 5X cuts

at what looks like rapid feedrates.

 

Personally, I don't think the machine is set up properly, but I thought I'd ask if anyone else was having issues with X2_MR2 inverse time feedrates??

[crazy^millman]

Tom have they tried it without the 5 axis comp and you posting it with a gauge length? Does the machine have to 9999.999 feedrate ability and maybe your post and control def are only set to 999.999 feedrate capability? Do you even need inverse time on this machine can you program it without and run the code to see if there is a big difference in how it runs?

[gcode]

Ron,

I've tried to with and without 5X comp

posted to the gage length and posted to the tool tip

I have my post limits set at 9999, but I don't

know what the machine needs and the builders

don't seem to know either.

Personlly I think the machine has some paramteres set incorrectly.

[crazy^millman]

Does the machine need the gauge length anywhere in the tool setting to use 5 axis comp? If so is the parameter turned on to use it? Tons of questions maybe we can bounce ideas off each other call me when you can.

[MIL-TFP-41]

What kind of control does the machine have?

[gcode]

GE Fanuc 15iM

[mcpgmr]

Silly question because I know you guys know what you are doing but, Is there a G93 being output from the post where the linear and rotary axis stuff kicks in?

[MIL-TFP-41]

Are you using High Speed commands (G5.1 Q1 ect)? Some controls don't like high speed & inverse time...Never saw it on a Fanuc tho

[gcode]

Well, I'm making progress.

They came out and worked on the machine yesterday

and must have changed some parameters.

I programmed a racetrack 40 inches around

I drove a 2D toolpath around it with no cutter comp at 20 ipm and then a 5X swarf at 20 ipm.

Both toolpaths should take 2 minutes each

to complete and they did.

This was with tooltip prgramming and the length offset controled by G43.4

Now we'll see how it does on a real part

[john316]

.

 

You might be past this point by now but how much of a sweep are you making? There are other ways to limit your inverse feed rates. In your toolpath parameters you have a fanning feedrate option that can be used to slow it down.

 

You can also lower the max feedrate in you post. I programmed a bulkhead for an Okuma-Howa that I had to set the max feedrate at about 500 to keep it from ripping across the mold surface at too fast of a feed.

 

Your post has several inverse feed options.

#0 - inverse feed at tip

#1 - min-max on flute length

#2 - tip to pivot on tool length

#3 - min-max on flute length to pivot on tool length

 

You can try these different options to see if one works better than the others.

 

HTH

 

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