Messages

1071

General Mach Discussion / Re: Problems threading on the lathe

« on: March 22, 2009, 12:05:04 AM »

Rich:

 If you can, try PP for me, SS uses different code for the most part. If PP fails, then we'll know its a difference form Brians code to mine.. since mine works in your tests..

Thx
Art

1072

General Mach Discussion / Re: BACKLASH PROBLEM MACHV3.042.020

« on: March 20, 2009, 11:21:02 PM »

Rich:

 Good!! I hate backlash issues. LOL

Art

1073

General Mach Discussion / Re: BACKLASH PROBLEM MACHV3.042.020

« on: March 19, 2009, 12:02:45 PM »

Rich:

  Some days Im denser than others.. I still dont understand this one..

>>( BUT IF PRIOR TO INPUTTING .05 , IF YOU HAD INPUT .4, OR SOME RANGE OF VALUES
BL WILL BE BE SCREWED UP..... UNTIL.....  "0" VALUE IS INPUT FOR THE SHUTTLE ACEL)


  So, you mean you start up, and enter 5.0 for example. It then puts out a 5 second ramp until 0 is entered in the accel?
And is backlash screwed up, or just working with a 5 second ramp? Its normal, if set to 5 for example, to do exactly as you stated, during motion the axis will slow over 5 seconds, a burst of motion ( BL) very quickly.. followed by a ramp back up to speed. The speed the BL is put out is the BL % setting..

  So Im not seeing anything screwed up, just using the extended time entered..?


Thx
Art


Art

1074

General Mach Discussion / Re: BACKLASH PROBLEM MACHV3.042.020

« on: March 19, 2009, 09:57:31 AM »

Just to kick in..

>>Well here is a liittle more Shuttle Value info:
                        MACH
Shuttle Value     Saved value    Jog Problem
------------------      ----------------    -----------------
.005                 .005              no
.05                   .05                no
.5                     .5                  yes
.6                     .6                  yes
.06                    .06                no
.7                      .7001            yes
.05                    .05                no
5                       5.0073          yes


  Shuttle Accel is the number of seconds to take to slow to zero to implement BL, so a setting of less than .1 is less than 1/10th of a second, pretty
much instant.. The larger numbers would like 5 is 5 seconds.. which means youd expect the 5 second slowdown. Keep it less than .05 and you shouldnt see
any rampdown..

  So the question is.. if set to .05 does it stay at .05? Does it take several seconds to ramp down ever at that point?

Thx
Art
 

1075

General Mach Discussion / Re: Problems threading on the lathe

« on: March 18, 2009, 11:10:04 PM »

Hi Guys:

  Thx for the confirmation, Brians code is fixed, update wont be long. PP and SS should both be fine as this fix affects both.

You all did real well here, and I bow to your effort. It was a very bad one to find and your descriptions really led me to the well,
I still needed to be forced to drink, but at least I was at the well.

Id like to hear of any threads you get after the fix and their quality. I have more to fix in threading and any assistance helps.

Thx
Art

1076

General Mach Discussion / Re: Problems threading on the lathe

« on: March 18, 2009, 08:32:07 AM »

Rich:

 Sounds good ..  Can you see if the original code and the 17-2 works good too?

 The RPM being off is due to other changes in this exe, you can ignore those for now,
the fixed version from Brian wont have that strangness..

Thx
Art

1077

General Mach Discussion / Re: Problems threading on the lathe

« on: March 17, 2009, 09:51:28 PM »

Hi Guys:

  OK, I think we're narrowing way in..

You can keep the original code as youve been doing, try this exe for me..

Thx
Art

1078

General Mach Discussion / Re: Problems threading on the lathe

« on: March 17, 2009, 09:42:39 PM »

Rich:

Is this the repeating code your using?

G01 Z-0.1                                   Z IN POSITION WAITING FOR INDEX TO START THREAD
G32 X0.999 Z-0.0997 F0.076923   INDEX / Z ACCEL TO THREAD START POINT
G32 X0.999 Z1 F0.076923            THE THREADING CUT
G01 X1.1 Z1 F0.076923               RETRACT OUT OF THREAD
G00 X1.1 Z-0.1                            RETURN TO THE X OFFSET & Z START
G00 X1                                       X MOVE TO STOCK DIAMETER

if so, can you change the first move to a g0 from a g32. So it reads..

G01 Z-0.1                                   Z IN POSITION WAITING FOR INDEX TO START THREAD
G00 X0.999 Z-0.0997                  INDEX / Z ACCEL TO THREAD START POINT
G32 X0.999 Z1 F0.076923            THE THREADING CUT
G01 X1.1 Z1 F0.076923               RETRACT OUT OF THREAD
G00 X1.1 Z-0.1                            RETURN TO THE X OFFSET & Z START
G00 X1                                       X MOVE TO STOCK DIAMETER

  Does it still do it? Im thinking the first G32 is being ignored, ( and it shouldnt be necessary anyway.. )

Art

1079

General Mach Discussion / Re: Problems threading on the lathe

« on: March 17, 2009, 04:14:35 PM »

Rich:

  Im not aware there is any issue with BL, works fine last I tested it. Not my baliwick anyway though..
Art

1080

General Mach Discussion / Re: Problems threading on the lathe

« on: March 17, 2009, 01:45:34 PM »

Hi Guys:

  I think that fix is on the web. Im pretty sure thios one shoudl fix you up, but Im still looking into
other possabilities. Ill have a test driver ready soon if this doesnt fix it so we can test deeper now
 that Im on the right track at the very least. So if you still see this X motion, yell and Ill send you a special driver
to help track down the exact position of the problem.

Art