search

gnea / grbl-Mega

An open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on an Arduino Mega2560
https://github.com/gnea/grbl/wiki
Other
493 stars 229 forks source link

GRBL Mega - Axis Support Naming #59

Open JorgenCollinson opened 6 years ago

JorgenCollinson commented 6 years ago

hi,

Am looking to build a machine with additional Axis's Mainly Dual Z Axis and an extra Lathe(Rotary) Axis.

I understand that the Rotary Axis is called Axis 'A' Can i get input for what you would call a second 'Z' or 'Z2' Axis if you have a lathe axis as well..

fra589 commented 6 years ago

In Gcode, axis are only named with 1 letter. So you can't use Z2 for naming an axis, as 2 is the deplacement length for the Z axis when you use Z2... The naming standard for additionals axis is A for rotational with rotation axis paralele to the X axis, B for rotational with rotation axis paralele to the Y and C for rotational with rotation axis paralel to the Z axis. For linears additionals axis, the naming convention is U for additional axis paralele to X, V for additional axis paralele to Y ans W for additional axis paralele to Z. See http://linuxcnc.org/docs/html/gcode/machining-center.html for more details. With Grbl, you will need to edit sources yourself to change the axis names. If you need more than 3 axis, you will need to use another fork. For example, my 5 axis fork in https://github.com/fra589/grbl-Mega-5X

JorgenCollinson commented 6 years ago

Thanks for the feedback, greatly appreciated. I will check out your firmware.

Regards Jorgen

From: Gauthier Brière Sent: Tuesday, 10 April 2018 2:59 AM To: gnea/grbl-Mega Cc: JorgenCollinson; Author Subject: Re: [gnea/grbl-Mega] GRBL Mega - Axis Support Naming (#59)

In Gcode, axis are only named with 1 letter. So you can't use Z2 for naming an axis, as 2 is the deplacement length for the Z axis when you use Z2... The naming standard for additionals axis is A for rotational with rotation axis paralele to the X axis, B for rotational with rotation axis paralele to the Y and C for rotational with rotation axis paralel to the Z axis. For linears additionals axis, the naming convention is U for additional axis paralele to X, V for additional axis paralele to Y ans W for additional axis paralele to Z. See http://linuxcnc.org/docs/html/gcode/machining-center.html for more details. With Grbl, you will need to edit sources yourself to change the axis names. If you need more than 3 axis, you will need to use another fork. For example, my 5 axis fork in https://github.com/fra589/grbl-Mega-5X — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

cprezzi commented 5 years ago

Grbl doen't support dual axes, but you could just connect two stepper drivers to the same step & direction pins.