Re: CNC class

["Pete Cook" <kf2qd-at-terraworld.net>]

CNC standard.... NOW that's a dirty word...

Most of the time the long travel of the machine is X
I have run a Lathe where the carriage was X & Z (I think that is  a standard
too...)

Most of the time G00 is rapid (both axis' get to the programmed point but
not necesarily coordinated)
G01 - coordinated straight line move.
G02 G03 Arcs - I have seen clockwise defined from the bottom of the machine
and from the top.
G04 dwell.

M00 - Program stop
M01 - Optional stop
M02 - End of program
M30 - End of program - rewind to the "%" sign

"%" used to be the required start of program so the controll could read past
the man-readable leaders on the old paper tapes. (made great streamers for
RC model aiplanes for dog fights...)

I have seen machines where G10, ,11,12,13 or g20,21,22,23 replaced
G00,01,02,03 But with some additional accuracy (or not...)

Most of the other codes were dependent on  a combination of the control
manufacturer and the machine tool builder with some of the codes changing
from year to year. ( i worked at a shop with 2 identical slantbed chuckers
and the program tapes were not interchangeable...)

There was more standardization after Fanuc hit the market but I think that
GE screwed that up when they bought into that series.

What kind of controls are your students gong to be working with - get a look
at thier programming manuals for those machines and form a curriculum from
that.

Pete
>
> Well,
>
>  Now that I was able to cut a few samples, its time to teach the
> machine operators to use the beast.
>
>  I have a question before I begin preparing materials and
> samples...what is the f.. std, since the guy who is primarly targeted,
> insists, wisely, on learning the cnc stuff, as close to the std as
> posible, I dont give a s.... either way since to me it does not matter,
> but I belive, he is looking ahead just in case he wants to move on. so
> this time I make him a favor.
>
> so, what is the standard for the point of reference for a mill, who
> travels, the tool or the table, I know the only moving part is the
> table, but we all know it does not mean anything to an engeenier, it
> could easily be said "reality is wrong". I would appreciate your
> comments.
>
> In the mean time, I have enough geting him used to use
> LINUX!!!!!!!!!!!!
> what should I teach vi, emacs or ed??? ;)) never mind! no comments,pls.
>
> regards,
> esv.
>
>
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