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I have problem with Z steps on my micro mill. After rechecking and testing everything electrical and mechanical, found that problem was with backslash compensation(I'm using TurboCNC). I put zero

Carl Mikkelsen wrote: I'm not an expert in this area, but the general flow is : G code interpreter trajectory planner kinematics servo control Since EMC can jog a hexapod in cartesian coordinates

rocketscientistnate wrote: Hmmm, I wonder if you have a chip in your ballnut? I get these in my machine every once in a while. My marginal quill motor will sometimes stall on this. My EMC software

I was thinking to put power on the clips and use a heavy enough gauge copper to make the resistance much less than the resistance wire. The control circuit would pump current through the wire and

You guys may know what I am looking at here. I have a 1985 Bridgeprt R2G4 Series I with Fanuc 11MA controller. Lots of manuals but little discription of what I need to know. Trying to interface

wrote: have a continuous I had a spare motor that came with the mill, but I hadn't tested it yet. I got it out, it ran great so I mounted it on the mill. No luck, it does the same thing. I turned

<dave_mucha@...> wrote: I used to cut out lots of foam wings for RC airplanes way back yonder, and I did it exactly like Phil describes. Worked just fine. Irby

<mattison20@...> wrote: foam draws just little, and density I am starting to think that is how it is done. just heat the wire and watch the cut. I don't suppose it is anything difficult as I am

Jon, The large-scale calibration is fairly well covered by the simulated annealing method of estimating the systematic error parameters. This discussion grew out of concerns about quantization,

so rating can be Bridgeport quill. ballscrew is to lost steps. lines I reread the advert at homeshopcnc.com. Its 850 oz-in PEAK. 170 constant. Its definitly not a pulley slipping, I can watch the

If you can easily move the quill up and down you probably don't have a problem. Most commercial retrofits use around 400 - 500 oz-in continuous torque rated motors. Those motors are 170 oz-in

I use nichrome wire from the hobby store with spring tension, a 12v transformer and a light dimmer. I've found that when cutting, the foam draws heat from the wire so the temperature (and therefore

rocketscientistnate wrote: Yes, if it is binding, then you would be able to feel it. No, 2500 Oz-In would break things. Usually, because steppers lose so much of their (holding) torque when moving,

Les Newell wrote: My method of freeing a Bridgeport quill that was binding was to extend it fully and wipe axle grease all over the quill, then retract and work in and out a few times, then extend

Carl Mikkelsen wrote: There are instruments that do this, surface roughness indicators. But, one other way is to do this backwards. Maybe the plane is the easiest, here. You mount a dial test

<denschmitz@...> wrote: temperature wire, so insulators, temperature If I follow, one could put some sensing leads with alagator clips, and 'store' them on the ends of the wire. for many cuts,

The coefficient of resistance wire isn't as linear as platinum but it's stable. You can design the current regulator to maintain a set temperature once you've calibrated it. Come to think of it, this

There doesn't appear to be that much gummy stuff, and most of it is at the end. When the machine is off, I can turn the motor and move the quill quite easily by turning the position indicator (about

<dave_mucha@...> wrote: I don't know of any formulas but power disipated is I^2.R and the R will be a function of temperature itself so it might be a bit complicated. I suspect it is a rule of thumb

Hi Nathan, This a a fairly common problem. After a lot of use the slideway oil tends to leave a gummy deposit where the quill slides in the head. I found that taking the front cover off, cleaning out