James, By definition, backlash compensation is done when an axis changes direction, at which point the velocity of that axis is zero, so speedong up tha few...
I just get confused at why when it's cutting an arc (g02/03) and it stops to take up backlash, why it does the backlash take-up steps at such a slow rate? I've...
Hi, I'm new here! Is there any possibility to reduce the holding torque current (by software?) while steppers are inactive (apart from switching them off). Any...
Hi David, I assume you are using V4.? By the lack of other responses it seems that few of us use TCNC on a lathe and even fewer use a toolpost. The toolchanger...
It depends on the motor drive that you have. Some drives will do that automatically. Others have a line that, if you change its state, will change the current...
I have some drives that do not have provision for reduced holding torque but the motor current is set with an external resistor. My idea is to set up a 555...
Hi, Tracy: OK, now that you've explained it a little better, here's what I'd do - a complete hardware solution. I would take all three or four step outputs of...
I was going to use a 555 for each axis. I thought of them because they are cheap and easy and very few components to make it work. And, yes, I was going to use...
is it possible to have a rotate command. there's been tons of time that i could have used a rotate, instead i rely on CAM. i have a square with 4 tapered...
... they ... yes, I ... extra ... current ... running or ... an OR ... individually. ... timer ... on ... still ... but I ... watch ... there are ... using ......
... they ... yes, I ... extra ... current ... running or ... an OR ... individually. ... timer ... on ... still ... but I ... watch ... there are ... using ......
If you pull that extra resistor down (ie turn it on) with a fet, you can dispense with the 555 and just use a resitor, 2 caps and a diode. One cap from the...
Thank you. I will send this to my son to make sure I get it right. He's a lot better at this stuff than I am. Tracy ... -- No virus found in this outgoing...
Travis, Many, many thanks! Your idea works exactly like I what I was looking for. Absolutely none of the problems I was afraid of. There is no noticeable loss...
Hi guys, I am hoping you can help me out because this has just about driven me insane. I am using TurboCNC hooked up to a Xylotex board. Everything seems to be...
Hi Chris, Since you say that swapping the controller and stepper motor as a pair from another axis did not fix it then I think that we are looking at...
Hi, Chris: What happens if you issue a G00 X05 instead of X10? Is the offset still 0.02, or does it drop to 0.01? If it drops, take a look at your scale. It ...
Hello, Slightly off topic. I am contemplating building a pcb milling machine from scratch, dremel based, versus converting my Harbor freight 44991 to CNC. My...
You should check out a Taig mill. there not to expensive, and pretty accyrate. At 1/8 step with 200 step motots, my Taig is accurate to about .00003125" ...
... Hi Vince, There are a few problems with PCB's. drilling and milling. Drilling is best done with a spring loaded or solenoid powered head. Quite simple...
Vince , I just read Dave’s reply to you and YES I did go thru all those problems as he states . I found a 20 degree profile cutter from Bits & Bits worked...
Naps: Sounds like the control you're using uses a phase drive scheme. Instead of two pins per motor you have 4, and the step sequence typically looks like...
David: Maybe I need to clarify this in the manual a bit. The tool turret index line goes active for a few seconds on each M06 (up to 120 seconds), with no ...
Jeff: Glad to hear that it's all worked out - I need to do something similar as we have brief outages whenever there's a strong breeze in the valley. Do you...
Steve: Sure, that's actually fairly easy, and already allowed for in the code. The center of rotation would be the machine origin, and it'd work in the current...
Dave, The "feed hold" would be a more elegant way of handling a UPS incident if it had the possibility of a settable delay before resuming. A relay on the...
Beauty. Rotation in all 3 planes. Roll it in. mirroring is along the same lines, no? can you roll that one too? :-) i got my islands done anyway. a bit of...
... My plan is to do small prototype RF boards. It's would be nice to tweek the trace size for impedance matching, stub tuning, etc. without waiting for the...
I use my mill primarily for pcb trace routing. I built mine from used hi-end linear slides I picked up off of eBay from liquidated assets of dot-com fallots....
For the EDM people a feature to allow the backup of a specified amount of steps from 0 to X will make it more useful, also will help with chip clearing by not ...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
