Lathe "C" axis unwinding - not good

[Philcott]

Still X2

 

Can some one tell me why my code does this? I want it to wind up higher than 360.0 degrees. I know there is a switch somewhere but I can't find it at this moment.

 

 

X1.0307 Z-.0331 C359.3177

X1.0344 Z-.0375 C359.9998 (not going past 360.)

X1.0307 Z-.0331 C.6824 (gouging here)

X1.0258 Z-.0269 C1.6567

 

Thanks

[Philcott]

"Is there anybody out there?"

 

Don't you just love Pink Floyd?

[gcode]

X4 here...

looking in the default X4 mill/turn post I didn't see anything that would help..

going to the C axis properites in the machine def

check the Tavel Limits setting..

The stock unedited machine def in my sytem

has Travel limits set to ± 360000°

and

the Continous Axis TYpe setting

set to Signed Continuous

[Turn Master]

machine def manager

click on properties for c-axis

down @ the bottom of the page change c-axis to continuous

[mayday]

what machine Phil? our NL mori's have the same problem. we have to use an Integrex post to get good code. Ther is a prm in the machine but cant say at hand what it is

[Philcott]

Mori SL200SMC

 

It has been suggested that I turn off g107 (misc values). I'll try that and see what I get.

[mayday]

the G107 prolly kicks it into radial. keep that in mind. also there are inssues with c axis toolpaths. Download the latest MPLmaster and use mill paths on the main spindle. Sub spindle stuff is all effd up with mc. someday perhaps XX11 will have it fixed

[Philcott]

Wes,

 

What does kicks it into radial mean? I do know I had to turn on axis substitution.

 

quote:

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also there are inssues with c axis toolpaths.

---

Ya I noticed.

 

quote:

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use mill paths on the main spindle.

---

So don't use the "C" axis toolpaths for lathe but use the mill paths?

[Philcott]

I found the ba$tard.

 

quote:

---

#SET BY MD - Variables to capture parameter values - use to set post switches in pset_mach

rot_axis : 0 #Axis of rotation - 1=X, 2=Y, 3=Z

rot_type : 1 #Rotary type - 0=signed continuous, 1=signed absolute, 2=shortest direction

rot_dir : 0 #Rotary direction - CW is positive, 0 = false, 1 = true

rot_index : 0 #Index or continuous - 0 = continuous, 1 = index

rot_angle : 0 #Degrees for each index step with indexing spindle

---

I needed to set this

 

rot_type : 1 #Rotary type - 0=signed continuous, 1=signed absolute, 2=shortest direction

 

to {"0").

 

I'm glad I didn't just spend around four hours chasing this down.

 

Does anyone know if this can be set in another place so I don't need to change the post to use it?

[Philcott]

Could I set these to yes and then use the machine definition page?

 

quote:

---

# --------------------------------------------------------------------------

pset_mach #Set post switches by reading machine def parameters

#Reset variables prior to MD read

y_axis_mch = no$ #Reset to zero - Set from Axis Combination

 

rd_mch_ent_no$ = syncaxis$ #Retrieve machine parameters based on current axis combination - read from .nci G950 line

rd_md$ #Read machine definition parameters - calls pmachineinfo$

 

#We only need these set at toolchange (and start of file). No need to set them each time a user may call rd_md

if rot_angle = zero, ctable = one #ctable zero will produce a divide by zero error, so force to one if zero in MD

else, ctable = rot_angle

---

[Chris Rizzo]

Did you try it on the mach def page first? If it is hooked up there would it "trump" your hard setting in the post?

[Philcott]

Yes I did Chris. I had it set to continuous but it only went to 360. then unwound. That is why I was wondering if a switch needed to be turn on.

 

You do mean in the machine definition manager under the settings tab, right?