DocsMachine
Titanium
- Joined
- Jan 8, 2005
- Location
- Southcentral, AK
I'm getting a GT-75 up and running, and have been practicing writing and cutting a few test parts. My skill level with such things is still very much on the 'neophyte' level, but I'm tryin'.
I have two questions:
One, on the X-axis servo, is a small pneumatic ram or actuator:
This is fed low pressure air from one of three regulators in the cabinet below the work area, and when I got the machine, the line feeding it- which had already been patched at least twice- had popped off, and had apparently been that way for quite a while.
The manual warns against trying to move the axis without air pressure, so I'm assuming this thing is a sort of brake considering the steep angle of the X slide.
While testing, it's thrown up errors three times, saying the servo 'can't hold position'- twice while at extreme lower travel (very possibly reaching the limit OF travel) and once when the slide was more centered.
Am I right in thinking this thing IS a brake of some sort? It's not mentioned or shown in the manual, just the warning about moving it without air pressure. If so, it's been moved and probably a lot without pressure, as the hose looked like it'd been laying in the swarf and coolant for a good long time.
Has anyone ever been into one of these, or a similar device?
The other issue is I can't seem to get it to thread. I've followed the book closely- G33, a 'canned cycle'- and whenever the program reaches that line, motion stops (but the spindle and coolant keep going) and then the screen gives me something that looks more like a DOS error screen than an OS error dialogue.
First tried threading a part I'd turned, then tried just a thread on a raw bar. Seems that when it reaches that G33 line, whether that code or something else in the line, it chokes and can go no further.
The screen does give me some code- something like an "error 9", maybe, but I never thought to take a photo of it. No idea what that means.
I thought maybe the spindle encoder was bad, but in the 'troubleshooting' section of the manual, they show you how to test it- basically Ctrl-S in Jog mode turns the "RPM" readout into straight encoder-pulse counts. It should count up to 3999 and then go back to zero- zero is the index mark. Mine worked perfectly, just as the manual describes.
I have the newer "Gen 4" controller, and I know there's a "new" and an "old" version of that- I'm not sure which I have (probably older) but the threading code and description is identical- down to the typos- in both 'new' and 'old' manuals.
Any ideas? I'll be calling OT later this week, but figured I'd ask here, see if anyone's run across either of these issues before.
Doc.
I have two questions:
One, on the X-axis servo, is a small pneumatic ram or actuator:
This is fed low pressure air from one of three regulators in the cabinet below the work area, and when I got the machine, the line feeding it- which had already been patched at least twice- had popped off, and had apparently been that way for quite a while.
The manual warns against trying to move the axis without air pressure, so I'm assuming this thing is a sort of brake considering the steep angle of the X slide.
While testing, it's thrown up errors three times, saying the servo 'can't hold position'- twice while at extreme lower travel (very possibly reaching the limit OF travel) and once when the slide was more centered.
Am I right in thinking this thing IS a brake of some sort? It's not mentioned or shown in the manual, just the warning about moving it without air pressure. If so, it's been moved and probably a lot without pressure, as the hose looked like it'd been laying in the swarf and coolant for a good long time.
Has anyone ever been into one of these, or a similar device?
The other issue is I can't seem to get it to thread. I've followed the book closely- G33, a 'canned cycle'- and whenever the program reaches that line, motion stops (but the spindle and coolant keep going) and then the screen gives me something that looks more like a DOS error screen than an OS error dialogue.
First tried threading a part I'd turned, then tried just a thread on a raw bar. Seems that when it reaches that G33 line, whether that code or something else in the line, it chokes and can go no further.
The screen does give me some code- something like an "error 9", maybe, but I never thought to take a photo of it. No idea what that means.
I thought maybe the spindle encoder was bad, but in the 'troubleshooting' section of the manual, they show you how to test it- basically Ctrl-S in Jog mode turns the "RPM" readout into straight encoder-pulse counts. It should count up to 3999 and then go back to zero- zero is the index mark. Mine worked perfectly, just as the manual describes.
I have the newer "Gen 4" controller, and I know there's a "new" and an "old" version of that- I'm not sure which I have (probably older) but the threading code and description is identical- down to the typos- in both 'new' and 'old' manuals.
Any ideas? I'll be calling OT later this week, but figured I'd ask here, see if anyone's run across either of these issues before.
Doc.