rotation plane around y axis in g18

papagno-source
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16 Jan 2025 00:00 #319062 by papagno-source

rotation plane around y axis in g18 was created by papagno-source

Hi.
In linuxcnc we have g10 l2 px rx and rotation plane xy around z on px origin selected.

For plane g18 not have implementation for linuxcnc ?

Thanks

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andypugh
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17 Jan 2025 18:51 #319205 by andypugh

Replied by andypugh on topic rotation plane around y axis in g18

No, rotation about Z is a special case.
Rotation of the other planes (including uvw) might be nice, though there doesn't seem to have been many requests for it.

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papagno-source
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18 Jan 2025 15:42 #319293 by papagno-source

Replied by papagno-source on topic rotation plane around y axis in g18

I think that for a cnc, rotations in the G17-G19-G20 planes are fundamental. There are many machines that have a double spindle, one installed vertically and the other horizontally. In these cases it is necessary to change the plane and the rotation of the plane, allows to greatly facilitate the work of programming the piece.

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Aciera
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18 Jan 2025 17:39 #319297 by Aciera

Replied by Aciera on topic rotation plane around y axis in g18

The usual approach is to create a configuration for vertical and another for horizontal operation but
one can easily create a kinematic that allows for switching between vertical and horizontal spindle orientation even in Gcode.

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papagno-source
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19 Jan 2025 17:15 #319386 by papagno-source

Replied by papagno-source on topic rotation plane around y axis in g18

Thanks for reply.

Please can write a example for orientation plane in Gcode.

Much thanks.

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Aciera
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19 Jan 2025 17:52 #319388 by Aciera

Replied by Aciera on topic rotation plane around y axis in g18

For a basic example have a look at the 'configs/sim/axis/vismach/millturn' for a similar use case.

The kinematic file used is this one:
github.com/LinuxCNC/linuxcnc/blob/master...onents/millturn.comp

For a simple vertical/horizontal kinematic you would only need to change this:

        case 0:
            pos->tran.x = j[0];
            pos->tran.y = j[1];
            pos->tran.z = j[2];
            pos->a      = j[3];
            break;
        case 1:
            pos->tran.x = j[2];
            pos->tran.y = -j[1];
            pos->tran.z = j[0];
            pos->a      = j[3];
            break;
    }
    // unused coordinates:
    pos->b = 0;
    pos->c = 0;
    pos->u = 0;
    pos->v = 0;
    pos->w = 0;

        case 0:
            pos->tran.x = j[0];
            pos->tran.y = j[1];
            pos->tran.z = j[2];
            break;
        case 1:
            pos->tran.x = -j[0];
            pos->tran.y = j[2];
            pos->tran.z = j[1];
            break;
    }
    // unused coordinates:
    pos->a = 0;
    pos->b = 0;
    pos->c = 0;
    pos->u = 0;
    pos->v = 0;
    pos->w = 0;

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papagno-source
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19 Jan 2025 22:21 #319415 by papagno-source

Replied by papagno-source on topic rotation plane around y axis in g18

I am very grateful for the support you give us.

Thanks

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papagno-source
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19 Jan 2025 22:46 #319417 by papagno-source

Replied by papagno-source on topic rotation plane around y axis in g18

I have add millturn.com.

When compile with make , have :
hal/components/millturn.comp: In function ‘millturn_setup’:
hal/components/millturn.comp:71:9: warning: implicit declaration of function ‘hal_set_unready’; did you mean ‘hal_port_read’? [-Wimplicit-function-declaration]
if (hal_set_unready(comp_id)) goto error;
^~~~~~~~~~~~~~~
hal_port_read
Linking ../rtlib/millturn.so

I use debian 10 with linuxcnc 2.9.pre0.
i have add milturn.comp at core_sim.hal in axis sim , have error :
Note: Using LXRT realtime
millturn: dlopen: /usr/lib/libint/rtlib/millturn.so: undefined symbol: hal_set_unready

how can resolve this ?

Thanks

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Aciera
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19 Jan 2025 23:02 #319418 by Aciera

Replied by Aciera on topic rotation plane around y axis in g18

I use debian 10 with linuxcnc 2.9.pre0.

I think you would have to update to 2.9.3.

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papagno-source
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22 Jan 2025 18:17 #319652 by papagno-source

Replied by papagno-source on topic rotation plane around y axis in g18

Hi.
For testing , is can modification trivkins kinematics for it , or is complicated.

Thanks

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