Messages

1801

Members Docs / Grid for LazyCam

« on: November 02, 2008, 08:36:55 AM »

I decided to make a grid to aid in text location in Lcam so I thought I'd throw it up here as I'm sure others would like something like this as well.

It's a 10" X 10" with .100" spacing and it is a dxf file so you could use it in your CAD software as well.

Remember you can use the scale function in your CAD system or LCam to size it any way that you'd like, which is a handy feature 

Hope this is usefull to some of you,

Dave

1802

General Mach Discussion / Re: Backlash Compensation question...

« on: November 01, 2008, 06:07:47 PM »

Yep, Joe, that would be waaaaay above me, my friend - 

Hood, no change on the home switches so that's out.

Well, when I posted this yesterday, I was  at .005 seconds shuttle speed and 100% B.L. speed.

Today I actually went up to .050 and no RESET this time and I didn't even slow down the feedrate.

I will be doing some more testing but so far, so good, and thanks again for the suggestions-

Dave

1803

General Mach Discussion / Re: Backlash Compensation question...

« on: November 01, 2008, 07:30:55 AM »

Interesting, Jim, I will play around a little more today and lower the value as compared to what I actually have (only .002-.003). The problem with lowering the value is the engraved letters may still look odd which is the reason I tried it in the first place.

Bottom line is I'll have to remove the tables and adjust this a bit.

Thanks for your input-

Dave

1804

General Mach Discussion / Re: Backlash Compensation question...

« on: October 31, 2008, 08:36:07 PM »

Yeah, that's a pretty slick setup  - 

Dave

1805

General Mach Discussion / Re: Backlash Compensation question...

« on: October 31, 2008, 08:18:42 PM »

That's pretty much what I was thinking but this is not a true servo setup as they'd like you to believe.

It's a stepper setup that just has an encoder piggybacked on each stepper and tells Mach where it is and if it gets too far out of range (not sure what that range is still to this point), then it tells Mach to go into RESET.

It does not "catch up" to the code after getting lost as I'm guessing true servo setups do, is this correct?

Dave

1806

General Mach Discussion / Re: Backlash Compensation question...

« on: October 31, 2008, 08:05:52 PM »

Nice thought, but no, that wouldn't be it as it's not that "fierce" of a move.

It's not like my machine is rattling about, but you have me thinking maybe I could just disable them for a moment, just to be sure.

Thanks Hood-

Dave

1807

General Mach Discussion / Backlash Compensation question...

« on: October 31, 2008, 07:47:10 PM »

Hi guys,

I have a Taig DSLS 3000 that definitely needs a little backlash adjustment in the X and Y axis and today I thought I'd try to implement the backlash compensation as I was in the middle of job that was given me a bit of uneven cuts.

Well, it works great for large slow circular moves but when I get into quick moving operations like engraving letters that are about 3/16ths high and cutting at 4IPMs, it turns on the RESET and says I've hit a limit switch.

That obviously didn't really happen so I'm wondering since the DSLS controller has a feedback loop that is supposed to tell Mach when it loses steps, if this is actually mistakenly thinking the backlash is missed steps and throwing the RESET? The second I turn backlash compensation off, it runs smooth as ever with no issues.

I'm going to try this again tomorrow and run super slow to see if if maybe the controller encoders can "keep up" with the backlash.

I'd love to hear any thoughts you may have-

Thanks as always,
Dave

1808

General Mach Discussion / Re: Lost License When Upgrading

« on: October 29, 2008, 06:53:53 PM »

Um...way to keep up with the times, young man.... 

1809

General Mach Discussion / Re: Lost License When Upgrading

« on: October 29, 2008, 05:57:10 PM »

Just remember, my friend, it's not the size of the wand, it's the magic in it - 

Dave

1810

General Mach Discussion / Re: Mach Workshop at Cabin Fever Expo

« on: October 29, 2008, 05:55:03 PM »

Exactly. I'd love to catch the seminars but would love to walk around and take part in the auction as well.

Dave