Re: [CAD_CAM_EDM_DRO] Re: mill threading, Acceleration, Axis

Sigmoid curves? Aren't you glad you don't have to calculate hyperbolic
paraboloid curves?

:) Smoke

-----Original Message-----
From: Alan Marconett KM6VV <KM6VV@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Thursday, November 16, 2000 12:47 PM
Subject: [CAD_CAM_EDM_DRO] Re: mill threading, Acceleration, Axis

>Thanks Dave,
>
>Well, I'm still learning. I'll see what plots out! Yeah, I found some
>information on the Sigmoid curve on the web! I'll build a table and see
>how it plays.
>
>Alan
>
>
>dave engvall wrote:
>>
>> Alan Marconett KM6VV wrote:
>>
>> > Dave, Ballendo, Jon and the list,
>> >
>> > Sigmoid? is that what you call the curve? I think mine looks like
>> > that. <snip!>
>>
>> OK, OK, you guys are dangerous. I knew the name but not how to calc. it;

but a little searching on the web and:

>>
>> Sigmoid curve:
>>
>> f(x) = 1/( 1 - e^-ax)
>>
>> which should translate as
>>
>> y = 1/ exp( -ax);
>>
>> LOL
>>
>> Dave
>
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