But that's wrong, if stock is diameter 45mm then it should retract to 22.5mm. X=0 is the rotation axis.
On Thu, 30 May 2019 22:55:59 +0300 Gediminas Dirma <[email protected]> wrote: > I understand what you said, but in CAM i set the stock diameter to > 45mm and after generating gcode I inspect it and i can see that X > axis is maximum position is around 48mm ( for return passes it > retracts from work). But still somehow in machinekit it thinks that > it has to go twice the set X distance in the gcode. I found something > about G8 and lathe radius mode. Maybe this has something to do with > it. > > 2019-05-30, kt 22:49, Chris Albertson <[email protected]> > rašė: > > > Two numbers stand out 45mm and 90mm. Notice that 90mm is > > exactly twice 45. A common mistake is to forget that moving the > > tool 1mm reduces the diameter by 2mm. Diameter is twice the tool > > movement. g-code specified tool movement, not part size Getting > > this backward might explain the 45 and 90 error. > > > > On Thu, May 30, 2019 at 11:40 AM Gediminas Dirma < > > [email protected]> wrote: > > > >> Hello, > >> > >> I am running CNC lathe with beaglebone and machinekit. Lets say > >> that i turn down cylinder from 45mm to 40mm. In my CAM i generate > >> gcode and it seems fine. > >> But then i upload it to machinekit, it changes turning diameter it > >> then starts turning not from 45mm but from 90mm and it turns down > >> 5mm. It seemes that something > >> is with X axis, since Z is working fine. What could cause this > >> problem? Maybe I do something wrong with tool table but i followed > >> procedures writen here > >> http://linuxcnc.org/docs/html/lathe/lathe-user.html > >> > >> Thanks for help. > >> > >> -- > >> website: http://www.machinekit.io blog: http://blog.machinekit.io > >> github: https://github.com/machinekit > >> --- > >> You received this message because you are subscribed to the Google > >> Groups "Machinekit" group. > >> To unsubscribe from this group and stop receiving emails from it, > >> send an email to [email protected]. > >> Visit this group at https://groups.google.com/group/machinekit. > >> To view this discussion on the web visit > >> https://groups.google.com/d/msgid/machinekit/30e422e8-c824-4f50-9636-f1a2c6681967%40googlegroups.com > >> <https://groups.google.com/d/msgid/machinekit/30e422e8-c824-4f50-9636-f1a2c6681967%40googlegroups.com?utm_medium=email&utm_source=footer> > >> . > >> For more options, visit https://groups.google.com/d/optout. > >> > > > > > > -- > > > > Chris Albertson > > Redondo Beach, California > > > -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/machinekit. To view this discussion on the web visit https://groups.google.com/d/msgid/machinekit/20190530131026.7f20014f%40edeltraud. For more options, visit https://groups.google.com/d/optout.
