I've been running more and more complicated programs lately that are
composed of many short line segments. Mach3 has a terrible time with
these programs and the actual feed is usually WAY less than the
commanded feed. This leads to long machining times and it's very hard
on the cutters. Does anyone have experience with EMC 2.0 and it's CV
mode? I really like Mach3, but If EMC has a better control method I
would gladly switch over. Art said at one time he was going to work
on a method to convert the line segments into NURBS to speed things
up, but I think that idea was placed on the back burner.
I've been running more and more complicated programs lately that are composed of many short line segments. Mach3 has a terrible time with these programs and...
Mach3 doesn't have a terrible time with multi-line segments from my experience. There is no difference between segments and arcs. What PC and hardware are you...
Thanks for the response guys. I'm running a P4 2Ghz computer at 25Khz step rate. I used VisualMill for CAM and always set it up to cut within 0.001" or so of...
... If you have a simple example that will run on a 4"x4" X/Y plane, email it to me and I will test it on our EMC2/ARCNC100 Taig mill and post a video on our...
Emc2's trajectory control has been totally rewriten. It has fixed quite a few of the bugs from the original emc planner. You can read about it here. ...
... Hi: Getting 25IPM from a 100ipm program isnt unusual with very short line segements. Nurbs is about the only way around it, but it too has a cost of not...
So Art, would this mean that the through put constraints of the G100's Rabbit 3270 are really not a big problem unless your trying to convert a very big...
Thanks for the reply Art. I hate to keep bothering you about it, that's why I have been asking about EMC (blushing). I don't think the limit is my machine...
... following the toolpath very closely, I think I can understand this with curves and nurbs, but I still don't understand why chopping a long straight line...
... G100's Rabbit 3270 are really not a big problem unless your trying to convert a very big steel/high HP machine Small segment code is always trouble. Web...
Hmmmm... I'm not sure a Rabbit 4xxx is the right form factor for existing G100 can ;~) Will Quantum potentially help with the vibrations? Steve ... to ... show...
... Thanks for the reply Art. I hate to keep bothering you about it, that's why I have been asking about EMC (blushing). ... I don't think the limit is my...
Quote: "I don't think the limit is my machine because it can accelerate VERY fast when doing G0 moves, but something like a helical plunge (made of segments)...
Stupid question, but i guess iŽll throw it in the air. Are you using CV in mach3? Fernando ... and Mach3 and neither suffer the effects being referenced. ... ...
Just wanted to input my two cents, I am not familar with these two systems but my comment should be valid as it is a problem with many others. In some systems...
Steve: Yes, Quantum does help with that. In fact it was just updated to Mach3 current level today. If you select a max jerk ( in inches/sec^3) , youll find you...
... understand why chopping a long straight line into multiple short straight lines causes a drop in speed It doesnt. A line like g0x.1 g0x.2 g0x.3 will run as...
Hello Again, Thanks for the ton of replies. Jon Elson helped me out a ton and ran some of my code on EMC2. For some reason Visual Mill put in a G61 in my...
OK, Visualmill output my code and popped in "F10" every once in a while which is not picked up by Mach3's display refresh, but does make my machine go slower...
... Yes, I saw that and did a run with the F10 upped to F30 and the F20 upped to F60. You have to get your CAM working so you can trust it, or you can't trust...
Jon, no doubt I need to learn the CAM better, and I really appreciate the help. Well, after commenting that my problem was fixed, I opened up some older code...
... Yes, and no surprise. I wonder, though, if there is a setting to increase the number of digits to the right of the decimal point? That may be the reason...
... At least in the beginning of your code, there is significant amount of Z travel, roughly equalling the amount of XY-plane travel on the longer move. If...
From: "David Bloomfield" <davidbloomfield@...> ... Hi David, maybe I get something wrong, but in my opinion, Mach doesn't allow you to set a "VERY high"...
Dave: Glad you found it. Posts can be annoying.. but its like learning to fish, you wont be fooled that way again. :) yes, try EMC anyway.. who knows, you may...
Bene: If you feel limited by that accel, just yell, Ill add it to my list, there is no real limit, its just one I arbitrarily set. I can start the pulses...
i fel on this thread seacrching for acc control are u guys talking abt velocity or acceleration? i thought acc with lotsa g's was a bad thing...(missed steps,...
From: "David Dolata" <david@...> ... Hello David, I think this is off topic because it has nothing to do with geckodrive. But when you ask for it - the...
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