RE: [CAD_CAM_EDM_DRO] re:Re: Black box

Mariss -


I'm about ready for 4 of your G340 units. Can I get them for $129
apiece? I'll pay w/ PayPal or credit card, your choice.


Carlos Guillermo
VERVE Engineering & Design

-----Original Message-----
From: Mariss Freimanis [mailto:geckohall@...]
Sent: Sunday, December 10, 2000 7:01 PM
To: CAD_CAM_EDM_DRO@egroups.com
Subject: [CAD_CAM_EDM_DRO] re:Re: Black box

Hi,

Things are moving very rapidly. I will have an axis card layout
this
evening. There is no servoing involved. Rather the very crux of
this
approach is the concept of integrating position from velocity. It
works, I have sold hundreds of units based on this concept.

This allows the PC to calculate a series of velocity commands that
are deterministic and can be output at leisure.

Using this approach, a circle would consist of 1,024 vectors a
second. If your circle had a circumfrence of 1" (0.159" radius)
and
if you were to move at 1" per second, it would be a 1,024 sided
polygon. If the circumfrence were 10" and you were to be moving
.1"
per second, then it would be a 102,400 sided polygon and so on.

Mariss

> I'm glad you asked this! I have also wondered if the 'dumb box'

idea

> was really worth it! From Mariss' response, it appears we

are 'servo-

> ing', whether it's a stepper or not. That is, current position
> is 'derived' rather than implicitly commanded. He didn't give a

2

> axis answer. I think that means the same calcs are done for each

axis

> and all the bytes go out at the same time? Still haven't seen

where

> the direction bit(s) come in?
>
> And I'm still waiting for an answer to my earlier post asking if

a

> circle will consist of 1024 'rate changes' per second?...
>
> Hope this helps.
>
> Ballendo

...