Messages

1081

General Mach Discussion / Re: Problems threading on the lathe

« on: March 17, 2009, 12:03:08 PM »

HI Guys:

  This is a matter of reference, Im speaking in terms of driver reading of the RPM. However, many systems are not pure in this sensing, sometimes a noise spike can occur and the system will run that section of code, this wont normally affect threading or your RPM display, as it is updated too fast for you to see , but that simple noise spike can make the program "think" that the RPM has slowed by 50% or more for just 1/25000th of a second, a fraction later the system will see the rpm is not really reduced.

  Im pretty sure this is what caused the error, and weve fixed it so it will be out within a day or two I suspect, next version you see anyway will have the fix. Dont focus too highly on the 50% thing, internally its more than possibel for it to occur with no spindle slowdown that YOU see, but the driver may have seen several, it takes steps to reduce noise and youd enever see the slowdown.

thx
Art
 

1082

General Mach Discussion / Re: Problems threading on the lathe

« on: March 17, 2009, 10:55:41 AM »

Hi Guys:

  Found it. In actual fact a RPM change of exactly 50% or more was required to trigger the error. It was not an application error, but a driver error, and a very weird one at that.
This one has been hanging in there awhile. For the person with 20% reduction causing it, I suspect one rotation was measured at 50% and thats all it took. From then on the
error woudl present itself.

  Thanks to all of you, good reports, good help in troubleshooting and you made it much easier to find this rather bad driver fault. It might also have affected PP probing in very rare cases.

A fix will be out soon.

Art

1083

General Mach Discussion / Re: Problems threading on the lathe

« on: March 16, 2009, 09:37:47 PM »

interesting..

  OK, Me and Brian will put on our thinking caps and see what kind of diagnostic we can put in for this,or see if we can deduce
from your tests whats happening. I must say, this one defies logic. But that CAN happen.

  The way the driver works , Mach3 has no real knowledge that the spindle has slowed, so its an interesting trigger point
to find.. Sorry for all the delays here, but its taken me awhile to fully understand .. and its confusing as hell.

 Im sure we'll soon have an Ah-ha moment and Ill spend days or weeks kicking myself.

Art

1084

General Mach Discussion / Re: Problems threading on the lathe

« on: March 16, 2009, 09:11:15 PM »

Woody:

  Thx, very nice description. You seem to have narrowed it to a single sentance, ( I like that.. ). So ..

"If the spindle speed is varied signifigantly during a pass, subsequent passes will show a X move during their pass. "

  Does everyone agree this seems to describe this error.

Thx
Art

1085

General Mach Discussion / Re: Problems threading on the lathe

« on: March 16, 2009, 11:12:41 AM »

Hi Trevor:

  Well, we know that a series of G32's will erronously activate the X and create a taper IF the spindle is slowed down.
I suspect the next move may be CV'ing in somehow. So Id like to know if the G32 series will still screw up if CV is turned off
during the series. Id appreciate it if anyone can tell me if thats so..

Art

1086

General Mach Discussion / Re: Problems threading on the lathe

« on: March 16, 2009, 10:52:20 AM »

Hi Guys:

 Sorry for the delay, we're discussing the trouble and we need to know if CV being off fixes this weirdness.

Thx
Art

1087

General Mach Discussion / Re: Problems threading on the lathe

« on: March 03, 2009, 09:14:23 PM »

Hi Trevor:

  Im still checking the code, but Brian is out of town till end of week and I need to discuss some thigns with him to help track it down.
Expect another week ro so till I can answer as to what it may be and perhaps a fix.

Art

1088

LazyTurn / Re: LazyTurn

« on: March 03, 2009, 09:13:08 PM »

Hi Rich:

>>>Will it be mandatory to make a rough pass?

  Yes, the way it functions is to do a rough if material exists that shoudl be roughed, only do a finish if the tool is done. I will look into perhaps making it just finsh if no rough seems necessary, but
the way the algorithms work I think it needs to compute the rough ..

>>>Will you be able to just double click cut and get a request for a finish pass?

  No, the checking is mandatory as it performs many of the main calculations needed.

>>Will you be able to post after a rough pass?

  Yes, you will be able to post at any time, or just on specific stages.

>>>Will a license be requred to post code? Put a little differently, what if anythiing will come with MACH?

   Yes, and No. Ive promised from the start to give it at no cost to LCam Pro users, but that may be just Pro users up to any release date.
No real decisions have been made, Ill wait to see how it all works, how clean and how lazy it is before I decide how to handle its distribution,
Support issues and such may preclude it from being a part of Mach3's distribution, if so I may just make a separate web site for it and give licenses
to all LCam Pro users to its release date, then make it a standalone package since it could in theory be used with any lathe as long as the post processor
can be configured, but all thats a ways away, and just thoughts, I have no set plan and it depends on many things. Beta testers and such will all get free licenses ,
previous users of Turning in LCam will as well, but the distribution issues will wait till LCam and LTurn have been changed abit in what they offer and then it will
 be looked at in context of two separate packages and how best to support them.  In summary..christ knows..

Art

1089

LazyTurn / Re: LazyTurn

« on: March 03, 2009, 11:22:28 AM »

khalid:

  , Thanks for the comment, but really none of this is all that difficult I think, Im the slowest thing in it and believe me, I confuse myself every day. I guess I should be gratefull no true genious decided to do CNC, I woudl have been left far behind. LOL , but I do appreciate the compliment.

  My secret is that I found that you can do anything in programming if you are persistant and work through the confusion. Im lucky my concepts of LazyTurn are starting to work very well, I was getting the feeling that it needed someone brighter than I to do it because the math is very difficult to conceptualize , but suddenly I find its on its way and Im really pleased with whats coming out now. I just got multiple tool cuts working today and it looks like it really WILL be Lazy after all.

  Just a note, Im off to Florida for a short vacation week starting Saturday, so you likely wont get multiple tool cutting till a week or so after I get back. The diagnostics tests Im doing are working very well though so Im hopefull it wont be too long.

Art

1090

Mach SDK plugin questions and answers. / Re: MachPluginWizard v1.1 BETA Release

« on: March 03, 2009, 08:46:02 AM »

Ed:

 Nice job on the video's. They are harder to do than most think and I think
you did a fine job.

Art