Turn software update?

[neodd70]

So I have tried a number of different posts processors including LinuxCNC and Mach3Turn. They will generate g-code that works but not 100%. For example I want to be able to use tool offsets which require a G43 H? whereas Mach3 uses T0101 the second 01 indicates the tool offset to use. Also need to have the ability to select G6 or G8 depending on if you are using radius or diameter as you cutting preference. Does anyone know how to modify an existing Post Processor to add these settings?

[andrej]

So I have tried a number of different posts processors including LinuxCNC and Mach3Turn. They will generate g-code that works but not 100%. For example I want to be able to use tool offsets which require a G43 H? whereas Mach3 uses T0101 the second 01 indicates the tool offset to use. Also need to have the ability to select G6 or G8 depending on if you are using radius or diameter as you cutting preference. Does anyone know how to modify an existing Post Processor to add these settings?

Did you find a solution? I used LinuxCNC PP for Fusion360 but it only outputs M6 Tx G43 and I need to add Hx after G43 manually to the generated gcode. Then it works fine and changes the XZ offsets according to tool table in UCCNC.

No idea how to add G43 Hx unfortunately...

[andrej]

Changed line 798 in linux cnc turning F360 PP code to:

Code: Select all

writeToolBlock("T" + toolFormat.format(tool.number), mFormat.format(6), conditional(tool.manualToolChange && !outputG43OnSeparateLine, gFormat.format(43)), "H" + toolFormat.format(tool.number));

It now outputs:

Code: Select all

N15 T1 M6 H1

Tested on lathe and it works fine. G7/G8 too.

[CNC Doktor]

Is it possible to use servo motor as headstock spindle and use encoder outputs from servo drivers as feedback?

[CNC Doktor]

Anyone?

[Leo Pedersen]

I would expect so, yes.
If you have A, B, & Z(index) signal outputs available from your servo drive you should be able to wire them in to your UC device.

[CNC Doktor]

I would expect so, yes.
If you have A, B, & Z(index) signal outputs available from your servo drive you should be able to wire them in to your UC device.

Thanks!

[kljosc]

It works in UCCNC Turn 1.2117. I have a stepperonline T6 1 kW AC Servo with break.
Parameterization was a challenge. You have to set parameter PA5.06 stopping mode to 1 and some other tweaks. I have uploaded my parameter settings file (rename ist to myfilename.lsr).
Connect all +/- encoder output (A, B, Z) to your breakout board, check A/B direction.
For my UC400ETH I have changed the PA0.11 to 360 (output pulse count per rev.) because the UC400ETH looses pulses above 3000 rpm. In UCNC settings => Spindle => Encoder CPR = 1440 (360 * 4).

Klemens

[cncdrive]

Yes, UCCNC can read a max. 50 kHz encoder frequency, so you have to calculate that and divide the encoder counts in the servo drive, otherwise the spindle encoder will not work properly.