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Hello;

I am in process of upgrading my Lathe to Mach4. I have a 4-position horizontal rotary tool changer, air activated, which only rotates one direction (counterclockwise as viewed...

OK, I was able to solve my issue - turns out I have a slightly old version of Mach still on this machine. Although it looks and acts just fine, it must have a bug in the spindle start. I installed...

We need a little more info on your problem to help, for example, what motion control software are you using? What type of smoothstepper are you using? What are the details of your encoder?

The...

I just got my knee mill CNC up and running. I am using Mach3, SmoothstepperESS, PMDX 107 & 126 BOB and Gecko G320X's with PMDX speed sensor feedback on the spindle. I also have a VFD on the...

I wanted to post this as I researched around and I couldn't find this really spelled out how to setup tools in Mach3, with homing switches using a toolsetter. Please let me know if I get anything...

I think I understand it and I'll endeavor to explain, anyone else feel free to correct me.

The way Mach3 works is the software, based on interpolating the G-Code commands, tells the computer to...

Thanks that is good feedback. I had seen the XHC, I was concerned it might not be too good, due to being Chinese. I am currently holding out to buy one until Mach4 gets a little more finished, as I...

It looks like that encoder is single ended with A, B, possibly I on terminal 6, although the labeling as ZR is odd. 2000 CPR is an enormous amount for a spindle when you consider it s turning at...

I'll give it a try again. We tried alternate baudrates. It had com1 I think is what it defaulted too and I didn't see a reason to change it. I'll try it again with a different com port setting.

Sure, this is what I have for a pic right now, turret is partially hidden behind the door. I won't be at the machine until next week, take some more then.

It's a rather large machine, 22" swing,...

I have a lathe with a 4-position rotary toolchanger. It is turret type toolchanger, and it can hold multiple styles in each position. I've already got the toolchanger macro working for this with...

Hey Larry;

Have had any luck finding the ability to use a virtual com port via USB or something to be able to tune the servos without a tower PC which seems to be the only thing with a com port...

Hello;

I am trying to develop g-code with BobCAM in order to thread NPT-style tapered pipe threads on the lathe. I am using V26 with Mach3 output, however I don't think this makes any difference...

I'm looking for advice on getting a pendant to use with Mach turn. I see lots of pendants pretty reasonable but they are all geared toward milling based on the settings and key defaults. I've not...

I don't have an example to share, however I have looked into this issue for NPT threads and there is capability to do that via a Mach3 wizard, using the taper setting. There is documentation on it...

As an update, I figured out the best short term solution is to run with the index pulse to Mach3. The PMDX 126 has a pulse stretching input pin specifically for this application, I used this pin for...

OK, I understand better - I'll hook them up directly and give it a try.

PS - what is the spec on the pin jumpers, as I prepped for this move I managed to loose the jumpers I need for the X drive...

I did get the X-Axis hooked up and working - seeing the same results in the graphs with spikey errors on moves. It's not quite as bad as the Z axis. It does seem to run pretty well other than that....

Yes, I get the spike when motor is changing direction, but why would there be recurring & regular error spikes during the actual move? I would have thought once the move gets to full speed, the...

OK, I will give that a try - I don't have an ammeter readily available, but I will try to find one. The board seems to be driving the motors well, the only issue I see is the oscillating error...

That did it, works like a charm now.

For reference, the new program block section is:

Dim finishPass
finishPass = Lathe_GetFinishNumberOfCuts()
Lathe_SetReturnString("Q"&finishPass&"")

Q...

Sean;

I gave it a run, but I am getting a syntax error on the program block line - attached is a screenshot of the error. I would venture to guess maybe the variable string it is trying to call...

Wow, I am very surprised there is no variable for this, I would have thought every possible threading option would have a variable since they vary so much between machine controls, making it easy to...

Hello;

I've gotten my threading post very close to working well in the processor, but I cannot figure out how to change the prefix to the finish_number_of_cuts which brings in the spring passes. ...

OK, I found out what was wrong, I had 'reverse arc moves for rear toolpost' checked in 'lathe options' menu. This caused the arcs to look like big circles on the screen, even though they were output...

Here are the Fanuc model 0 servo specs which has the datasheet for the Model 0 showing the loads these servo's take. These have the outline drawings and the general specs for Fanuc 0 and Fanuc 5...

OK, I ran thru some scenarios and here is what I found:

I ended up staying with Loop of 6, anything else seemed to get unstable. P (and 2x relative D) over 450 gets bad, it faults the drive right...

Next I'm going to try another tact, backing down L start from low P & D slowly increasing (but no lower than 4 on L as it get's very unstable). It seems like lower L was starting to smooth out the...

I am retrofitting an old industrial lathe Cadillac NC100 with new controls. It has Fanuc model 0 servo motors 4 brush, rated 12 amps 'Continuous Rated RMS Current at Stall TENV' per the datasheet. ...

I will try them, problem is I don't carry a support membership becuase I am just hobbyist and only use it mabye 10 or 20 times a year at most. I bought short subscription a year ago, and called in...