Re: [Emc-users] Re: a thought about emc2 development

[Gene H. <gen...@ve...>]

On Tuesday 29 November 2005 22:57, Dave Engvall wrote:
>Hi all,
>I'll try this again since my wonderful isp bounced the first try as
>spam.
>
>This is really a reply to Gene's message.
>
>Ever since I started thinking about machine control programs and way
>before I knew emc existed I've thought that any serious machine
>language would have a generalized polynomial as input. Pick an order,
>2nd or 3rd will do a lot of things. Gxx,  list of coeffecients,
>between (limits). Since the interp is not real time anyway machine
>restrictions should not be serious. Let the polynomial pick the
>length of the segments (some sane number) and go crunch.
>
>Dave

Sounds like a plan, but whose going to code it?  I may be pretty good
at electronics with my 50+ years experience, but what little I know
about algebra and trig was taught to me by my calculators, one of the
reasons I originaly bought an SR-50 back in the 70's.  You see, what
little algebra I got in school back in the 40's was heavily diluted by
a male teacher who was more intent on telling the latest off-color
jokes to a bunch of pubescent teenagers than in actually teaching the
friggin class, just one of the reasons I went off to spend the rest of
my working life steering electrons to do usefull work.  That I've been
fairly successfull at.

To illustrate my relative lack of math knowledge, here is a problem I've
been mooching around with for a while.  Given a 60 degree, fairly sharp
pointed thread boring bar, and the known OD of the thread, how can
one stick an inside dial caliper into the threads as they are being cut,
and arrive at a figure that says the threads have been cut to the proper
inside diameter?  In my muddling, I keep getting an answer thats not
deep enough, like I have a cos multiplier backwards someplace.

How do the rest of you handle this, other than try fitting the bolt?

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
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Copyright 2005 by Maurice Eugene Heskett, all rights reserved.