RE: [CAD_CAM_EDM_DRO] TANGENTIAL?

I just ran thru the BASIC math of it... and i believe i concure.. however
you'd have to have everything in incrimental... EXEPT the tangential axis..
if i understand it right???
because you'd need a X value and Y value of the next point to calculate the
angle, then do something like
the TAN of theta = Y/X... and do some multiplication to derive the steps of
a steper into degrees (or radiuns... ug...)
???post processor???

here is a thought.. what would happen if you go straight up or down
(incremental X value of 0) aren't you going to have an error? you'd need an
exception stating that if x=0 then theta is 90 if y >0, or 270 if y<0,
right?
ok... it also wouldn't know which direction to rotate to if Y=0 also...

-----Original Message-----
From: art [mailto:fenerty@...]
Sent: Sunday, April 28, 2002 9:13 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] TANGENTIAL?


Thanks Doug: (your checks in the mail)

Wouldn't it be just a simple matter of calculating the next trajectory
direction and rotating the engraver knife to the right direction prior to
the move...of course, all arc's would have to be converted to segments prior
to doing this...

Or is there something I'm missing here? Is a tangental cutter just a
rotational axis?

Art
Master5 Software
http://users.andara.com/~fenerty/master.htm




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