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Messages - c30232

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General Mach Discussion / Re: Mach 3 v NC Studio
« on: September 07, 2017, 05:05:14 PM »

It is a single axis with the individual spindles set up or down by pneumatic solenoids.  It appears to use a single frequency controlled line that is then switched between the two spindles . . . I think.       

General Mach Discussion / Mach 3 v NC Studio
« on: September 07, 2017, 04:35:25 PM »
I just acquired a router with one Z and two spindles.  The router is currently controlled by NC Studio.  My plan was/is to convert it to Mach 3 as we have other machines running Mach, however, upon reading the net I am finding numerous comments suggesting that Mach will not control multiple spindles.   Is that true?  Can I make the switch or should I leave NC in charge?

More data attached.

General Mach Discussion / Re: Gantry tracking correction
« on: July 23, 2017, 06:30:58 PM »
See the link.  We have the combo board in this machine.  So we are Mach to BOB to Chinese drives.


See attached.  I am searching for a manual for input terminals.  I thought output voltage would be good to find before crawling under to have a go at the VFD.  The VFD will soon be easily accessible, we are removing the vacuum table to access the gantry attachments.   

General Mach Discussion / Re: Gantry tracking correction
« on: July 23, 2017, 06:00:38 PM »
If I understand correctly, we would then simply need to add a switch for "A" with a home-run to its own circuit and pin.  Yes?   Then Mach will home Y followed immediately by A.  Or A followed immediately by Y.   Any other order would makes a coffee grinder noise     

I wish to control a router spindle from VFD via Mach.  Unfortunately, I do not have a schematic/manual for the BOB.  Nor can I get the seller to provide information beyond that the feature is on the BOB.

I found a dull and corroded terminal pair that were away from the rest.  I guessed at the pin.  I am able to switch the spindle on and measure 2 volts at the terminal.  That's the end of progress.

The terminal seems to have a sub-board section related to just that pair.  There is a pot on that section.  Dialing the pot does not change the voltage.

If I have found the correct terminal then the issue is within Mach.  How do I best configure Mach in order positively identify the terminal and set the voltage range?       


General Mach Discussion / Re: Gantry tracking correction
« on: July 23, 2017, 04:37:24 PM »
Thank you!

I think that will do the trick.  I assume that I will need to abandon the looped sensors that are currently used for homing and assign isolated switches to the Y and A axis.   

We did run the camera around and it appears consistent from 0 through 98 inches.

The next question will be running the VFD from Mach.  I'll start a new post.


General Mach Discussion / Re: Gantry tracking correction
« on: July 23, 2017, 03:10:58 PM »
Not sure I understand the question.  Is it off at zero and then the same at 96 inches?  I dunno.  Off means out of square.  Never made checks away from the center of travel.  

However, since the post we mounted a camera and introduced a variable by hand pushing the gantry to observe the end "twist" or "racking."  What seems to have happened is that the error was reduced substantially.  I suppose that it is under some mechanical tension as it always ends up off in the same direction.  

So the  aforementioned asks another question.  How does one set dual homing for a dual drive gantry running in slave mode?  Perhaps there is a combination of error.  That is, or could be, a manufacturing defect, setup defect, lost steps, and so on.  I am thinking that there is some mechanical tension that could be eliminated by loosing the various attachment points and re-torquing them.  That's a project, but combined with dual homing could take the boat anchor aspect out of this machine.

We made index marks with using the camera and the diagonal at 48x48 was, as best a tape will tell, off by about 1/32.              

General Mach Discussion / Gantry tracking correction
« on: July 23, 2017, 01:45:43 PM »
I have a 4x8 table upon which X is off perpendicular by perhaps 1/8 inch at the end of travel or 48 inches.  Does Mach 3 or any of the Mach's have a software compensation to accommodate this issue?   

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