Wrong tool-offset calculation with Emcoturn 120 ( Rear Tool-Turret)
Posted: Sat Jun 01, 2024 10:37 am
Hey guys,
i just upgraded to 5.10 from 4.86. And it seems like i found a bug, but i can't say if it's only since 5.10
I am using "Horizontal Lathe, Rear Tool Approach" with a greycode-Tool-Turret for my Emcoturn 120.
After installing 5.10 i did a new setup via wizard as suggested in the installation-manual.
I entered 3.05mm Z Style Size in the wizard, as my probe has an "elephant-foot"-tip with dia 10mm and 3.05mm width.
Then i measured all my tools in the turret. To not make any errors with my touch-probe, i have been using the microscope of Emco. This is mounted to a fixed position and has got a crosshair, where you set your tool-offsets with.
So i switched to T0101, jogged that to X0 Z0 of the crosshair (outer contours touching crosshair from approaching direction) and there i set X- and Z-Ref.
Then i switched to T0202 and jogged that to X0 Z0 of the crosshair. There, i clicked on "Measure Offset Z" followed by F10 for manual setting.
The same i did for "Measure Offset X"
I repeated this procedure for all my tools, and then i rechecked everything by switching to every single tool again and entering a G0 X0 Z0 command.
BUT:
All OD-tools have been moved to X0 Z0 of the crosshair correctly.
All ID-Tools have been positioned with a 3.05mm Z-distance in front of the X0 Z0-crosshair!
So every ID-Tool has a tool-offset of 3.05mm too much in Z., for example 23.000 instead of 20.000
To clarify if these are the 3.05mm from Z Stylus Size in the wizard, i changed that value in the wizard to 1mm.
Then, i measured the ID-Tools again like before (ID-Tools are tools #4, #5 and #7 here) and after doing that, a G0 X0 Z0-move positioned all ID-Tools only 1mm away from the X0 Z0-cropsshair.
I rechecked that with 0mm for Z Stylus Size, too, and with 0mm Stylus Size the ID-Tools are measured correctly and become positioned perfectly to X0 Z0 in the crosshair, just like the OD-tools.
That looks like an error with measuring ID-Tools.
So i changed Tool 7 to OD (i had to adapt the nose vector-number, too) and then it gets measured and positioned correctly.
Either the ID/OD-setting or the nose-vector seems to cause this?
Then i re-changed the Z-Stylus-Size to 3.05mm and just edited the wrong measured Z-values of the ID-tools by hand (just calculated -3.05 for every ID-Tool-Z-Value) and now the ID-tools get positioned correctly.
I attached a report, but just to mention: I already changed the Z-Values of the tool-offsets here. JTM
Best regards,
Marc
i just upgraded to 5.10 from 4.86. And it seems like i found a bug, but i can't say if it's only since 5.10
I am using "Horizontal Lathe, Rear Tool Approach" with a greycode-Tool-Turret for my Emcoturn 120.
After installing 5.10 i did a new setup via wizard as suggested in the installation-manual.
I entered 3.05mm Z Style Size in the wizard, as my probe has an "elephant-foot"-tip with dia 10mm and 3.05mm width.
Then i measured all my tools in the turret. To not make any errors with my touch-probe, i have been using the microscope of Emco. This is mounted to a fixed position and has got a crosshair, where you set your tool-offsets with.
So i switched to T0101, jogged that to X0 Z0 of the crosshair (outer contours touching crosshair from approaching direction) and there i set X- and Z-Ref.
Then i switched to T0202 and jogged that to X0 Z0 of the crosshair. There, i clicked on "Measure Offset Z" followed by F10 for manual setting.
The same i did for "Measure Offset X"
I repeated this procedure for all my tools, and then i rechecked everything by switching to every single tool again and entering a G0 X0 Z0 command.
BUT:
All OD-tools have been moved to X0 Z0 of the crosshair correctly.
All ID-Tools have been positioned with a 3.05mm Z-distance in front of the X0 Z0-crosshair!
So every ID-Tool has a tool-offset of 3.05mm too much in Z., for example 23.000 instead of 20.000
To clarify if these are the 3.05mm from Z Stylus Size in the wizard, i changed that value in the wizard to 1mm.
Then, i measured the ID-Tools again like before (ID-Tools are tools #4, #5 and #7 here) and after doing that, a G0 X0 Z0-move positioned all ID-Tools only 1mm away from the X0 Z0-cropsshair.
I rechecked that with 0mm for Z Stylus Size, too, and with 0mm Stylus Size the ID-Tools are measured correctly and become positioned perfectly to X0 Z0 in the crosshair, just like the OD-tools.
That looks like an error with measuring ID-Tools.
So i changed Tool 7 to OD (i had to adapt the nose vector-number, too) and then it gets measured and positioned correctly.
Either the ID/OD-setting or the nose-vector seems to cause this?
Then i re-changed the Z-Stylus-Size to 3.05mm and just edited the wrong measured Z-values of the ID-tools by hand (just calculated -3.05 for every ID-Tool-Z-Value) and now the ID-tools get positioned correctly.
I attached a report, but just to mention: I already changed the Z-Values of the tool-offsets here. JTM
Best regards,
Marc
