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Threading problem?
« on: April 08, 2015, 12:47:40 AM »
Hello all,

 I've seem to hit a bump in the road. I've been using mach 3 for quite some time now and am now starting to do threading I went through all the literature for mach3 turn for threading. to do 32 TPI.  However: when I post the code there's a red line that my machine follows. I thought that red line was homing or start point, is this correct? I have posted a pic any help would be much appreciated.

Offline Hood

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Re: Threading problem?
« Reply #1 on: April 08, 2015, 04:35:58 AM »
The Tool Change  position in the wizard is machine coords so likely that is where your machine coords zero is. Personally I prefer to have it home to a wok coords position and thus I altered the wizard.
Hood
Re: Threading problem?
« Reply #2 on: April 08, 2015, 04:24:40 PM »
Now when I set the spindle rpm for 300 it says over max feedrate even when setting at different speeds. It will post when I set it for 50 RPM, but my lathe wont go that low....?

Offline Hood

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Re: Threading problem?
« Reply #3 on: April 08, 2015, 06:07:31 PM »
Most likely the error is referring to the Z Axis, if the combination of RPM and pitch means the axis would have to  be moving faster than you have set in Motor Tuning then you will get the error message informing you.

Hood
Re: Threading problem?
« Reply #4 on: April 15, 2015, 01:46:14 AM »
Is there any other literature you could link me to to figure this out. I guess I am not understanding it.

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Re: Threading problem?
« Reply #5 on: April 15, 2015, 04:30:45 AM »
It is simply saying that to cut the required pitch at the called for RPM the Z Axis would have to move faster than it can, so it is impossible.
Say, as per your screenshot above  you called for a RPM of 400 and a pitch of 0.031(32 tpi) then the axis would have to move at 0.031 inches per revolution. That would be a feedrate of 400 x 0.083333 = 12.4 Inch per Minute.
If your max velocity for the Z in motor tuning  was 10 IPM then it would be impossible for Mach to carry out the threading operation.

If that is not your problem then please attach your xml and I will take a look.
Hood
Re: Threading problem?
« Reply #6 on: April 15, 2015, 09:07:16 AM »
It's not letting me attach the file. Tried to rename it ect.

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Re: Threading problem?
« Reply #7 on: April 15, 2015, 10:44:08 AM »
Try another name, possibly someone else has previously used the name you are trying.

Hood
Re: Threading problem?
« Reply #8 on: April 15, 2015, 11:32:32 AM »
thanks

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Re: Threading problem?
« Reply #9 on: April 15, 2015, 12:32:06 PM »
That is a mill profile you have attached.
Hood