Re: G92

Peter, from what I know the simulation seems correct. On my
Bridgeport BOSS control it does the same thing (set's the new zero to
the coordinates specified with no movement). You can envision the G92
as making a move to the coordinates specified and the making that
position the absolute zero reference, however, no movement actually
occurs.

~petev

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "pcfw" <pcfw@y...> wrote:
> Lloyd wrote: "What can their simulation software do that
> www.cncsimulator.com cannot?"
>
> I posted a query on G92 at Mike's forum www.cncci.com but Mike is
> heavily into FANUC. The crowd here is exposed to a much wider range
> of controllers. I hope to hear what the enlighted crowd here thinks
> of www.cncsimulator.com interpretation of G92:
>
> This is relating to the sample part program I obtained the software
> CNCSimulator which can be downloaded for free from
> www.cncsimulator.com. The file in consideration is _sample11.nc in
> the Mill folder which shows a simulation for machining the profiles
> of 2 half bottle separated from each other by a distance in x. The
> first bottle is machined and the sequence end at N1530 at which
point
> the X coordinate is X-17.5
>
> At sequence N1540 (sequence no added for reference) the program
zero
> is shifted by a G92 command (G92 X110). According to your notes,
this
> should mean that after N1540, the NEW program zero will be 100
units
> TO THE LEFT of current tool position in the ASCII diagram below. So
> the next move N1550 X-11.5 should send the tool 115.5 units TO THE
> LEFT.
>
> Instead, the simulation at sequence N1550 shows the tool going ~90
> units to the right as shown in the ASCII diagram below. If the
> simulation is correct, the meaning of N1540 G92 X110 is setting the
> NEW program zero 110 units to the right of the position at N1520,
> that is putting the new coord. as -110 when G92 is invoked.
>
> N1520 G02 X-17.5 Y10 I0 J9.5
> N1530 G00 Z5
>
> N1540 G92 X110 T1 (dia 10mm)
> N1550 G01 Y127 X-11.5
>
>
> +Z
> |
> |
> |
> |
> |
> |
> |
> |
> |__X___________________X____________________\ +X
> --17.5...0.........-11.5.........0
> ...N1520............N1550 NEW PROGRAM ZERO ?????
> current tool
> ..position
>
>
> Peter