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Messages - RICH

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6391
Robereto,
I assume this is the piece.

Looks like it's cut just the way you coded it. The width is 7 15/16" (7.9375").
Red is cut piece, yellow are z moves ( circle is 0.300 cutter), dimensions in white

RICH

Hey Hood,
All my re-sharpened mills are weird sizes post resharpening them.  ;)

6392
Roberto,
How overeall width of the piece that you are cutting.
Can you post the gcode of the piece? In fact, one each with the different feed rates.
Don't think Autocad is your problem.
What program are you usiing to generate the gcode?
RICH

6393
FAQs / Re: Pulsing too fast
« on: March 25, 2009, 06:49:33 PM »
DR JACKPOT,
Maybe it is just that particular  laptop and one that dosen't work with very well with MACH.
Someone posted a link to a free PP tester, freebie, ????? Budman ???????
RICH

6394
General Mach Discussion / Re: Problems threading on the lathe
« on: March 23, 2009, 11:42:18 PM »
ART,
Maybe you can shed some on this question.
How or what inpact does the debounce input values affect the thread cutting RPM?
I notice if set to "0" that i can get the displayed rpm value to increase but it fluctuates
by say 5 rpm. What kind of stability on the rpm do you need?

Modified to add some clarity:
No problem here with the SS, so the question only relates to the  PP.
The manual states: "The index pulse and the other inputs have independant settings".

Now my understanding on the index debounce / debounce interval  has always been relative to
homing switches. But if the slot index for threading happens to provided limited rpm, like say 300 rpm ,
and then you go and change the index debounce to a low value you can the get full rprm , like say 1400 rpm,
but it is not stable ( may constantly vary by 10 rpm ). Will threading lock into an average or something?

Rich

6395
General Mach Discussion / Re: Problems threading on the lathe
« on: March 23, 2009, 09:42:11 PM »
Hi Art & everyone else,
These are just a few  of the threads done using Mach ver 3.042.24, the SS, and G32 code generated by the wizard. They represent a good range of threading for Punny lathes.

#   THREAD  RPM         IN-FEED ANGLE         MATERIAL
--   ------------   -------         -------------------------         ---------------
1    0-80        600          30                               WELDING ROD             
2   1/4-20      400          29                                6061 AL
3   1/4-20     100           20                                AL ( THE SOFT STUFF )
4   3/8-16      400          29                                1018 CR
5   1/4-40-2 LEAD 200   29                                1018 CR
     ( G32 code not generated from the wizard )
6   1/2-13      400          15    ( TOP PART )        TOOL STEEL
"    1/2-13      300          15    ( BOTT PART )      TOOL STEEL

I coudn't find any pitch problems with 1,2,3,4,6  and the threads look good. The top part of 6 is was not finished as the thread tool holder
moved and the tool jammed the thread, so yes there was a slowdown and the thread cycle recovered from it! The bottom of 6 created numerous slow downs but the thread still came out.

The two lead thread has some pitch problems in the last 1/8" of it but not sure why.

I didn't get around yet to using another computer to try the PP as it is limited by axis speed. The SS will do at least 4x in axis speed as compared to the PP.

So looking good so far.

RICH

6396
General Mach Discussion / Re: Problems threading on the lathe
« on: March 22, 2009, 11:15:31 PM »
Hi All,
Dry ran 3.042.024 a number of times and from what  i can see and hear looks like a winner
for both SS and PP.

You can't do the looped G32 file that i posted you'll get an error. Will post something different
tomorrow.

The amount of rpm allowance and readout seems back to normal and movements seem well behaved.
By well behaved i mean, the Z tracks the spindle slow down and speed up and reacts rather quickly to
the rpm changes  and dosen't trip the threading cycle so easily.

Will cut some threads tomorrow and see how things go.

Thanks for sticking in there Art, it's appreciated.

RICh


6397
Newfangled Solutions Mach3 Wizards / Re: 2.83 ready
« on: March 22, 2009, 09:20:33 PM »
Ron,
Should MACH VER 3.043.00 be installed before using 283 version???
I'm workring my way up the ladder to 3.043 but seem to keep missing a
wrung on the ladder trying to get there.  ;)
RICH

6398
General Mach Discussion / Re: Problems threading on the lathe
« on: March 22, 2009, 09:02:02 PM »
Art,
Thanks, for the heads up.
Ya know, before playing around all day, i took a look at the revisions in the change log, and it said:

March 17/2009
Release 3.042.023
-- Threading bug found and fixed in Driver...   ???

I am still laughing. Must admit that the my index slot is a whole lot bigger now!   ;)

Heck, you can use it to cover the half moon hole on the outhouse.   ::)

Should make a nice holiday gift for Brian!  :) :) :) :) :) :) :) :) :)
 
RICH






6399
General Mach Discussion / Re: Problems threading on the lathe
« on: March 22, 2009, 01:32:08 PM »
ART,

MACH VER 3.042.023
When i use the SS the rpm is displayed correctly ( 0-1300 RPM within one or two as measured ).
When i use the PP the rpm is off and over 130 rpm it's useless.
The same happens if i replace the ver .023 mach.exe, with the one from .020, and the 17-2 ( only pp use).

This is true for 2 different pc's.


Since I  can't get the PP to correctly display the RPM properly, someone other than myself needs to test using the PP.

RICH



6400
General Mach Discussion / Re: Problems threading on the lathe
« on: March 21, 2009, 10:54:19 PM »
Dear Brian and ART,

I just tried out threading with the updated ver 3.042.023 with the SS using G32 or G76.

No joy! Etremely sensitive to a change in rpm on my few tests.
I didn't try the PP.

With only a 10 rpm change ( 400 dn to 390 ) the threading cycle faulted.
When it faults the XZ go  "wild". Also you get the error
"NO SPINDLE FEEDBACK SEEN IN G95"

Ah.....i need to remember what our good looking Scout mom said:
"IF at first you do not succeed, try, try again"  :)

RICH

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