Re: [CAD_CAM_EDM_DRO] Digest Number 2033

That would depend on the multiplier in the readerhead or display. Could be
x1, x5, x10, x25 or x50 the lines on the scale. As far as I know without
this info, it is hard to tell with actually counting them on the glass.

Regards,

Dr.D

----- Original Message -----
From: <CAD_CAM_EDM_DRO@yahoogroups.com>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, February 05, 2002 4:20 PM
Subject: [CAD_CAM_EDM_DRO] Digest Number 2033


Addresses:
FAQ: http://www.ktmarketing.com/faq.html
FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/

Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
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List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
Moderator: jmelson@... timg@... [Moderator]
URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
bill,
List Manager


------------------------------------------------------------------------

There are 25 messages in this issue.

Topics in this digest:

1. Motion Control Chip - 4 axis stepper
From: "James Stevens" <stevens@...>
2. Re: What kind of motor should I use?
From: "Henrik Olsson" <henrik-olsson@...>
3. Grammar
From: "P. J. Hicks" <hickspj467@...>
4. Re: Motion Control Chip - 4 axis stepper
From: Alan Marconett KM6VV <KM6VV@...>
5. Re: Grammar STOP THIS THREAD
From: wanliker@...
6. Re: Solids Modeling Training at ASU East
From: <awood@...>
7. Re: Re: What kind of motor should I use?
From: CL <datac@...>
8. RE: Re: What kind of motor should I use?
From: "j.guenther" <j.guenther@...>
9. Re: Re: Black Box Goals
From: "Mr. sausage" <sirsausage@...>
10. Re: Circuit Board Layout Program
From: "mariss92705" <mariss92705@...>
11. Re: Lots of Parts
From: "RachelBarker" <rachel@...>
12. Carl Mikkelson
From: "RachelBarker" <rachel@...>
13. Bargain stepper amps
From: "RachelBarker" <rachel@...>
14. Re: RE: BDI : Parallel Port Setup
From: Paul <Paul.Corner@...>
15. Re: Motion Control Chip - 4 axis stepper
From: JanRwl@...
16. Set-up tooling left in spindle-collet
From: JanRwl@...
17. Microscope Z axis
From: "gregmc" <gregmc@...>
18. Re: Set-up tooling left in spindle-collet
From: CL <datac@...>
19. Re: Set-up tooling left in spindle-collet
From: Drew Rogge <drew@...>
20. Re: Re: Black Box Goals
From: CL <datac@...>
21. Re: Re: Pro/Desktop Express 2001 - how to export a 2d file into
something like Dolphin CAD/CAM
From: glee@...
22. Re: RE: BDI : Parallel Port Setup
From: "James \(Jim\) Buchanan" <jambuch@...>
23. Re: Re: Black Box Goals
From: "William Scalione" <wscalione@...>
24. Re - What motor should I use
From: "bwrfromuk" <bwjarandall@...>
25. Micron
From: "James Owens" <wotisname@...>


________________________________________________________________________
________________________________________________________________________

Message: 1
Date: Tue, 5 Feb 2002 09:41:08 -0600
From: "James Stevens" <stevens@...>
Subject: Motion Control Chip - 4 axis stepper

In the new Circuit Cellar (Feb '02) there is a little blurp about a new 4
axis motion control chip for stepper motors - PCD-4541 from Nippon Pulse
Motor Corp. (www.pulsemotor-usa.com).

I thought it might be relevant for someone building a homebrew CNC - it
should take care of some of the housekeeping.

James


[Non-text portions of this message have been removed]



________________________________________________________________________
________________________________________________________________________

Message: 2
Date: Tue, 5 Feb 2002 17:52:11 +0100
From: "Henrik Olsson" <henrik-olsson@...>
Subject: Re: What kind of motor should I use?

Hello,
Here's a link to Isel's spindlemotors. They claim 200-24000 RPM. Cost is
about $1500 over here, inculding the VFD. A little expensive for me but I
would REALLY like to have one!
/Henrik Olsson.

http://www.isel.de/new/englisch/Automat/produkte/elektron/hauptspindel/ac_sp
in.htm





________________________________________________________________________
________________________________________________________________________

Message: 3
Date: Tue, 5 Feb 2002 10:22:50 -0800
From: "P. J. Hicks" <hickspj467@...>
Subject: Grammar

Right on Vester. I'm a relative "newbie" also but couldn't help shooting my
two cents into the grammar thread. Welcome and I'm sure you will be treated
well and learn a lot. I can't remember a question from anyone not being
answered with grace and good humor.
PJH




________________________________________________________________________
________________________________________________________________________

Message: 4
Date: Tue, 05 Feb 2002 11:14:38 -0800
From: Alan Marconett KM6VV <KM6VV@...>
Subject: Re: Motion Control Chip - 4 axis stepper

Hi James,

Yes, I saw it this morning. I've requested more information, they are
local. It did say CW/CCW output, if that's what they meant. That can
be "converted" to step/dir.

Alan KM6VV


James Stevens wrote:
>
> In the new Circuit Cellar (Feb '02) there is a little blurp about a new 4
axis motion control chip for stepper motors - PCD-4541 from Nippon Pulse
Motor Corp. (www.pulsemotor-usa.com).
>
> I thought it might be relevant for someone building a homebrew CNC - it
should take care of some of the housekeeping.
>
> James



________________________________________________________________________
________________________________________________________________________

Message: 5
Date: Tue, 5 Feb 2002 14:14:05 EST
From: wanliker@...
Subject: Re: Grammar STOP THIS THREAD


tThe next posting on the thread GRAMMAR will result in that person being put
on moderated postings.

tTis list is for and about CAD,CAM,EDM, AND DRO.
bill
List Mom


________________________________________________________________________
________________________________________________________________________

Message: 6
Date: Tue, 5 Feb 2002 12:16:12 -0700 (MST)
From: <awood@...>
Subject: Re: Solids Modeling Training at ASU East

Dick,

I think you forgot to attach the info on the training at ASU East. I am
interested in hearing about the class. On of these days I will make time
to attend. :-)

Anna




________________________________________________________________________
________________________________________________________________________

Message: 7
Date: Tue, 05 Feb 2002 13:34:12 -0600
From: CL <datac@...>
Subject: Re: Re: What kind of motor should I use?

One of the fellows where I worked accidently flipped the switch on for a 3hp
Perske. What he forgot was, that he left a Dial Indicater and Flex Arm in
the
chuck. As one could expect, the last rpm setting was sky high. The Dial came
off rather quickly, the arm was hanging for dear life. Vibration was felt
thruout the shop.

As I am on my knees crawling at the "below projectile zone" heading for the
Main Power Switch ( the guy that turned it on was no where to be found !),
one of the knuckle joints let go and launched itself across the room into
the
vertical steel pole barn siding that lined the inside of the shop. The
5/8"-3/4" dent from the hit is clearly visable to this day !

That would be a shallow dent compared to flesh......

There are two glass windows on each side of the machine to keep it seperated
from other workers in the building and keep noise under control with the
ability to see what goes on. Those windows never looked as "safe" after
that.
Should have wire reinforced glass at least.

So, watch your speeds, and keep a lookout on those dials when they are in
the
chuck.

Centrifugally speaking, May the "force" work with you, not against you.

Chris L

Dan Mauch wrote:

> Good points and one other problem is most people don't consider when
> running spindles at much higher speeds than designed is the significant
> safety factor problem of running a large pulley that was designed to run
> at 1/4 that speed. Have you ever seen a 7"D pulley come apart? I would
> think the centrifugal forces would be enormous. I have not seen one do
> this either but would not want to be in the general area when it did
> come apart.
> Dan
>
> -----Original Message-----
> From: Peter Seddon [mailto:peter@...]
> Sent: Tuesday, February 05, 2002 2:14 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Re: What kind of motor should I use?
>
> The thought of running a motor rated at 3000rev/min at 14,400rev/min is
> terrifying:
> 1. Bearing capability
> 2. Rotor integrity and possible bursting
> 3. Out of balance problems
> 4. Overal efficiency and heating problems
>
> Stick with motors designed for the task and go for longevity of your own
> life !!
>
> Regards Peter
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Manager
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/



________________________________________________________________________
________________________________________________________________________

Message: 8
Date: Tue, 5 Feb 2002 14:46:59 -0500
From: "j.guenther" <j.guenther@...>
Subject: RE: Re: What kind of motor should I use?

I have not seen a 7 inch pulley come apart, but I have been up close and
personal with a fly wheel on a 327 Chevy motor that let go, it was somewhat
akin to being next to a grenade when it explodes. Fortunately the scatter
shield kept the pieces from coming up on the drivers side of the car, but
the mess it made out of the floor, dash, windshield and body work on the
right side was very awakening!

John Guenther

> -----Original Message-----
> From: Dan Mauch [mailto:dmauch@...]
> Sent: Tuesday, February 05, 2002 8:53 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: RE: [CAD_CAM_EDM_DRO] Re: What kind of motor should I use?
>
>
> Good points and one other problem is most people don't consider when
> running spindles at much higher speeds than designed is the significant
> safety factor problem of running a large pulley that was designed to run
> at 1/4 that speed. Have you ever seen a 7"D pulley come apart? I would
> think the centrifugal forces would be enormous. I have not seen one do
> this either but would not want to be in the general area when it did
> come apart.
> Dan
>
> -----Original Message-----
> From: Peter Seddon [mailto:peter@...]
> Sent: Tuesday, February 05, 2002 2:14 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Re: What kind of motor should I use?
>
> The thought of running a motor rated at 3000rev/min at 14,400rev/min is
> terrifying:
> 1. Bearing capability
> 2. Rotor integrity and possible bursting
> 3. Out of balance problems
> 4. Overal efficiency and heating problems
>
> Stick with motors designed for the task and go for longevity of your own
> life !!
>
> Regards Peter
>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Manager
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>



________________________________________________________________________
________________________________________________________________________

Message: 9
Date: Tue, 05 Feb 2002 19:47:26
From: "Mr. sausage" <sirsausage@...>
Subject: Re: Re: Black Box Goals


> >Can you imagine the space and weight 1,000 PC boxes take up compared
> >to 1,000 paperback size units?

>GOOD POINT! I wasn't thinking about the space required in stocking them.

Well, kind of a good point, except that he wouldn't be stocking *any* boxes.
My idea was that he made *boards* which fit in *our* PC cases. Those
would be even smaller to 'stock' than the proposed paperback sized
enclosures (which will be an unnecessary expense anyway because they'll
ultimately end up inside *another* enclosure)

I just bought a bunch of G320s. They are very pretty devices but the little
enclosures they're in serve no useful purpose - it's not like you can leave
them exposed in a machine environment.

My point was *one* tidy enclosure which had a nice cable bundle going to the
axis motors and a serial cable to the PC - not a pile of little boxes.

I want it to end up looking something like THIS...
http://www.ahha.com/techdat2.htm


_________________________________________________________________
MSN Photos is the easiest way to share and print your photos:
http://photos.msn.com/support/worldwide.aspx



________________________________________________________________________
________________________________________________________________________

Message: 10
Date: Tue, 05 Feb 2002 19:47:34 -0000
From: "mariss92705" <mariss92705@...>
Subject: Re: Circuit Board Layout Program

Another choice is Autogerb 3 if you have ACAD 2000. This is a free
program that runs as an .arx application inside ACAD. It converts
whatever drawing you are working on into gerber files. It's the best
converter I have seen; it works flawlessly.

http://www.camtastic.com/en/downloads/sfiles.asp

Mariss

--- In CAD_CAM_EDM_DRO@y..., JanRwl@A... wrote:
> James:
>
> I see you have been sent some info, already, so your quest may be
already
> satisfied. If not, look into this OTHER YAHOO group, specifically
about
> Home-Brew PCB's:
>
> http://groups.yahoo.com/group/Homebrew_PCBs/?yguid=8629833
>
> Jan Rowland



________________________________________________________________________
________________________________________________________________________

Message: 11
Date: Tue, 5 Feb 2002 18:25:38 -0000
From: "RachelBarker" <rachel@...>
Subject: Re: Lots of Parts

Hello John.

If your interested in the parts I can arrange to meet you somewhere
reasonably near to your home (I have quite a few customers in Liverpool - eg
Marconi) and am often there.

Would this suit you?

Regards,

Colin.

----- Original Message -----
From: "John Heritage-UK" <johnhe-uk@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, February 01, 2002 1:36 AM
Subject: Re: [CAD_CAM_EDM_DRO] Lots of Parts


> Hello Colin,
>
> Would you take an Electron Visa card? I'm not over 18 so I only have a
debit
> card at the moment. How much will delivery to Merseyside (Liverpool or
> Wirral) be for 2 or 3 of these and if I order them with the encoders do
they
> come with the metal frame attached?
>
> Thanks again,
> John
>
> > Hello again John.
> >
> > The motos are 20.00 each without encoder and 27.50 with. This is dirt
> > cheap!!!
> >
> > Regards,
> >
> > Colin.
> > ----- Original Message -----
> > From: "John Heritage-UK" <johnhe-uk@...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Tuesday, January 29, 2002 11:15 PM
> > Subject: Re: [CAD_CAM_EDM_DRO] Lots of Parts
> >
> >
> > > > Frame size 23, 2 stack steppers ( 1 nm) made by Sanyo. QTY- I've
lots.
> > > 20.00 each (No. 37)
> > >
> > > To all us none SI guys that's 1Nm = 141.5 oz/in. : )
> > > Could I see number 37 please? Are you selling anything else?
> > >
> > > John H.
> > >
> > > johnhe-uk@...
> > >
> > >
> > > Addresses:
> > > FAQ: http://www.ktmarketing.com/faq.html
> > > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > >
> > > Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> > > Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> > > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> > > List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> > > Moderator: jmelson@... timg@... [Moderator]
> > > URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> > > bill,
> > > List Manager
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> >
> > Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> > List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> > Moderator: jmelson@... timg@... [Moderator]
> > URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> > bill,
> > List Manager
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Manager
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>



________________________________________________________________________
________________________________________________________________________

Message: 12
Date: Tue, 5 Feb 2002 20:22:41 -0000
From: "RachelBarker" <rachel@...>
Subject: Carl Mikkelson

Can you contact me again Carl. I have the ballscrews you want but I can't
reach your e-mail for some reason.

Regards,

Colin Barker


[Non-text portions of this message have been removed]



________________________________________________________________________
________________________________________________________________________

Message: 13
Date: Tue, 5 Feb 2002 20:33:48 -0000
From: "RachelBarker" <rachel@...>
Subject: Bargain stepper amps

Hello all.

I can't believe someone out there doesn't want to buy my Parker (Compumotor)
"Zeta" stepper drives.
see www.compumotor.com/literature/pdf/pg111_zeta_fam_specs.pdf.

I have 19, all brand new. They originally cost over $700 each!! Asking price
is $150 each. PS They don't need a PSU they are 110 V ac .

Regards,

Colin Barker


[Non-text portions of this message have been removed]



________________________________________________________________________
________________________________________________________________________

Message: 14
Date: Tue, 5 Feb 2002 20:57:31 +0000
From: Paul <Paul.Corner@...>
Subject: Re: RE: BDI : Parallel Port Setup


Hi Deon

That is pretty much it - Two port addresses are specified, one for
connection
to the stepper drives, the other for IO.

If you still have trouble, I'll email an ini file over that works on my
machine fitted with just one parallel port.

Regards, Paul.

Most of the seeds germinated thanks - Just a case of waiting for them to
flower ;))


On Tuesday 05 February 2002 12:43 pm, Deon Styger wrote:

> I will do this tomorrow and report back. Am I correct in assuming that if
> the port is found at a specific address, all I need to do is check that
> this address is specified in the .ini file? If I can then still not get
out
> of e-stop I will have to check the other settings in my .ini file more
> carefully.


________________________________________________________________________
________________________________________________________________________

Message: 15
Date: Tue, 5 Feb 2002 16:11:52 EST
From: JanRwl@...
Subject: Re: Motion Control Chip - 4 axis stepper

In a message dated 05-Feb-02 13:12:46 Central Standard Time, KM6VV@...
writes:


> It did say CW/CCW output, if that's what they meant. That can
> be "converted" to step/dir.


And very easily with only a single 29¢ 74HC02! I can describe how in words
(so simple, a schematic is not really absolutely necessary). Contact me
off-group, if you wanna know 'bout such. Jan Rowland, Old Troll


[Non-text portions of this message have been removed]



________________________________________________________________________
________________________________________________________________________

Message: 16
Date: Tue, 5 Feb 2002 16:21:36 EST
From: JanRwl@...
Subject: Set-up tooling left in spindle-collet

In a message dated 05-Feb-02 13:27:07 Central Standard Time,
datac@... writes:


> One of the fellows where I worked accidently flipped the switch on for a
3hp
> Perske. What he forgot was, that he left a Dial Indicater and Flex Arm in
> the
> chuck. As one could expect, the last rpm setting was sky high. The Dial
> came
> off rather quickly, the arm was hanging for dear life. Vibration was felt
> thruout the shop.

Chris: I'd be very interested to know, if you can tell us: Was the Perske
router motor (bearings) ruined by this mishap, or was your switching it off
done in time to "save" it?

One way to preclude such, and a way I have been often too lazy to implement
myself, is make the "last switch" for such a spindle-motor dependent on a
"key", specifically the "handle-end" of a collet-wrench, etc., so that MUST
be pushed back into the "key-hole" to make it POSSIBLE to switch-on the
spindle. And make it "grounds for immediate unconditional dismissal" for
any
workman to attempt to "defeat" such a thing with a dummy-plug, etc.

Jan Rowland


[Non-text portions of this message have been removed]



________________________________________________________________________
________________________________________________________________________

Message: 17
Date: Wed, 6 Feb 2002 04:25:25 -0600
From: "gregmc" <gregmc@...>
Subject: Microscope Z axis

A quick note to thank Ian Wright and ballendo for good info on our leitz
scope that will be step motor operated soon.
Thanks for your feedback it helps !
Greg www.gregsclocks.com



[Non-text portions of this message have been removed]



________________________________________________________________________
________________________________________________________________________

Message: 18
Date: Tue, 05 Feb 2002 16:00:20 -0600
From: CL <datac@...>
Subject: Re: Set-up tooling left in spindle-collet

The Perske survived the issue even though it was probably a full 60 seconds
for me
to get to the main disconnect on the wall (yes I lost machine 0,0 :-) ).
The main
switch was directly in the danger zone but I felt better getting to that
than
anything right at the control. the E-Stop switch is on the Gantry and I was
NOT
going to get that close.

Vibration was incredible and I do recall something hit the part being made
so it
was scrapped.

Your "collet wrench back in the holder switch" would be a pretty good idea,
though
a collet wrench in this case would have flown off before any real RPM was
developed. This was an extemely off balance item clamped in the spindle in
the
chuck. I couldn't think of the proper name before but the holder was an
"Indicol",
that and one SHOT "Interapid" too.

My office was on the other side of the window. I thought it would have been
nice
to mount a remote "KILL" switch (E-Stop) where I sat in the office while
most jobs
were running. That way, if it ever happened again, I would not have to make
believe I am a Super Hero and save the day. I don't work there no more,
yippee.


Dismissal ? Well, I find that when you have a guy who actually keeps himself
busy,
BY HIMSELF, you have to keep him even with an occasional mistake. We have
enough
that need "Hand Holding" all day long. The Boss says "we gotta use 'em the
way
they are, not the way they ought to be" !


The "E-Stop" outside of the machine environment isn't a bad
Idea...........Nor is
your keyholder switch !

Chris L

JanRwl@... wrote:

> In a message dated 05-Feb-02 13:27:07 Central Standard Time,
> datac@... writes:
>
> > One of the fellows where I worked accidently flipped the switch on for a
3hp
> > Perske. What he forgot was, that he left a Dial Indicater and Flex Arm
in
> > the
> > chuck. As one could expect, the last rpm setting was sky high. The Dial
> > came
> > off rather quickly, the arm was hanging for dear life. Vibration was
felt
> > thruout the shop.
>
> Chris: I'd be very interested to know, if you can tell us: Was the
Perske
> router motor (bearings) ruined by this mishap, or was your switching it
off
> done in time to "save" it?
>
> One way to preclude such, and a way I have been often too lazy to
implement
> myself, is make the "last switch" for such a spindle-motor dependent on a
> "key", specifically the "handle-end" of a collet-wrench, etc., so that
MUST
> be pushed back into the "key-hole" to make it POSSIBLE to switch-on the
> spindle. And make it "grounds for immediate unconditional dismissal" for
any
> workman to attempt to "defeat" such a thing with a dummy-plug, etc.
>
> Jan Rowland
>
> [Non-text portions of this message have been removed]
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
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Message: 19
Date: Tue, 05 Feb 2002 14:00:27 -0800
From: Drew Rogge <drew@...>
Subject: Re: Set-up tooling left in spindle-collet

In a previous life I used to run a LARGE Blanchard surface grinder.
The table was about 6 feet in diameter. One of the interesting
things about the machine is that it had one of those big red
mushroom emergency stop buttons located just above floor level.
Of course it had a guard around it so you couldn't kick it with
your foot but it was in a real handy place once you hit the dirt
while all your parts were being forcibly unloaded from the table.

Drew

CL wrote:
>
> The "E-Stop" outside of the machine environment isn't a bad
Idea...........Nor is
> your keyholder switch !
>
> Chris L
>

--
Drew Rogge
drew@...


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Message: 20
Date: Tue, 05 Feb 2002 16:14:52 -0600
From: CL <datac@...>
Subject: Re: Re: Black Box Goals



"Mr. sausage" wrote:

> (snip)
>
> My point was *one* tidy enclosure which had a nice cable bundle going to
the
> axis motors and a serial cable to the PC - not a pile of little boxes.
>
> I want it to end up looking something like THIS...
> http://www.ahha.com/techdat2.htm

I just wanted to mention that the Ah-ha box as shown "looks" tidy in the
picture, but actually has gaping holes in the FRONT where you connect
headers to
the axis cards and holes for dipswitch adjustment. These wires that come out
the
front go to the motors. Now I don't not like the gaping holes because dirt
and
metal chips can get in there when you use a blow gun now and then.

Add to that, they have all the Limit switch connections and I/O running out
the
back. (spaghetti-ville)

After using their system, I think I would gut their cabinet and install it
all
somewhere else.

They are not the only ones who use this "wires sticking out *all over*
technique", as so does many others that offer pre-made cabinets. I don't get
the
thinking there................

The only Company I have seen with some form of thought process applied so
far,
has been MicroKinetics.
They're 19" rack cabinet has wires only going out the backside and the front
is
retained for E-Stop and LED information. I bought one years back and it has
served faithfully. I have now realized how many adjustments are often
"played"
with, when setting up different Controls to Machine drivers..... So now, I
think
the ONLY way to go is with Sealed NEMA 4 cabinets with swing open doors.

They offer Instant access, removable backplane, sealed, rugged. What more
does
one want ?

Wires out all sides stinks.

(I realize the PC goal is to have all wires out the back - that shows
forward
thinking!)

Chris L



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Message: 21
Date: Tue, 5 Feb 2002 14:10:31 -0800
From: glee@...
Subject: Re: Re: Pro/Desktop Express 2001 - how to export a 2d file into
something like Dolphin CAD/CAM


Thanks for the reply Hugh,

First of all, I meant to type IGES and not IDES. Sorry for the confusion.

I have learned the following.

Pro/Desktop Express 2001 (PDE) works in its file format and will allow you
to import/export all of the file formats which I have listed below.

As far as going from PDE to Dolphin, the folks at Dolphin have responded
that I need to use the AutoCad14 format for best results.

As far as going from 3d to 2d to Dolphin, I am still working that out.

Here's what I "Think" that I want to do:

1. I want to be able to use the solid modeling features of PDE to create
parts and view them as solid models

2. I want to be able to then take these solid model parts and mate them
into an "Assembly"

PDE will do the above quite well.

Next, I want to be able to isolate a part that I have designed and export
it into my Dolphin CAD/CAM so that I can define the machining operations
and actually make the part.

I believe that the process to do this will be:

1. Design the part in PDE and then move it to an "Engineering Drawing"

2. Export the Engineering drawing as DXF in Autocad 14 format

3. Open the above DXF file in Dolphin CAD and define my contours, profiles,
etc.

4. Move into the Dolphin CAM module and define my machining operations

5. Export the G-Code from step #4 and take it to my AhHa CNC Controller
where I will execute the code.


A lot of steps but they seem clear to me. I have successfully done steps 3,
4, and 5 so I am just wondering about steps 1 & 2. I don't know if there
will be a huge loss of information in going from the 3d solid model to the
"Engineering Drawing." That's what I am learning.

In any case, I am happy to share what I am doing and I welcome feedback
from those who are further down this path.

Eric Mack






Hugh Currin
<currinh@OIT.E To:
CAD_CAM_EDM_DRO@yahoogroups.com
DU> cc:
Fax to:
02/03/2002 Subject: [CAD_CAM_EDM_DRO] Re:
Pro/Desktop Express 2001 - how to
09:01 AM export a 2d file into something
like Dolphin CAD/CAM
Please respond
to
CAD_CAM_EDM_DR
O






Eric:

It may be that you lose all the 3D information when you go to an
"Engineering
Drawing". If this is true you'll get only a flat representation of the
part.
Let us know if this is the case or not.

In your prior memo did you mean IGES instread of IDES? IGES is a common
format for 3D models. Do you have another CAD systems available? You could
consider importing from Pro/Desktop to CAD X using IGES or STEP (or
anything)
and then exporting in DXF for Dolphin. May be worth a shop. :-)

Hugh Currin
Klamath Falls, OR

On Sunday 03 February 2002 12:41 am, you wrote:
> I think I have answered my own question.
>
> Once I draw my solid model, I need to then open an Engineering Drawing.
> When I do this, it exports the solid model into the engineering drawing.
> From there, if I choose FILE EXPORT, I now have some additional formats:
>
> DXF FILE - This is what I plan to use to import into Dolphin
> Medusa SHeet
> Product View File
> JPEG
> Bitmap
>
> -Eric

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Message: 22
Date: Tue, 5 Feb 2002 17:50:09 -0500
From: "James \(Jim\) Buchanan" <jambuch@...>
Subject: Re: RE: BDI : Parallel Port Setup

Hi:

I think what you may find is that the computer may have a ECP type of
parallel port that will need to initialized before it can be used. This is
what was found by the DRO software people. The ECP port can be configured
as an old SPP (parallel port ) as a PS/2 port , EPP (Enhanced Parallel Port)
or a EMC bi-directional port. This means I think that the software will
need to be modified to send the necessary initialization sequence to the
card. Look at the documentation that came with the card. It should tell
you how to initialize it and what registers are what.



Here is some of the inline documentation to the DRO program as modified by
Robert Duncan.

"On many ports that support advanced modes, you can configure the port
either in the CMOS
setup, or with jumpers, or with configuration software that comes with the
port. Most have
an option that causes the port to emulate the original SPP, plus one or more
options that
enable the advanced modes. If the port is configured as an SPP, the advanced
modes will
be locked out and the port will fail any tests for PS/2, EPP, or ECP
abilities.

Detecting an ECP

In testing a port, you might think that the first step would be to test for
an SPP, and
work your way on up from there. But if the port is an ECP, and it happens to
be in its
internal SPP-emulation mode, the port will fail the PS/2 (bidirectional)
test. For this
reason, I begin by testing for an ECP, and work down from there. This is the
method
Microsoft's ECP document (in the Developer's Network CD-ROM) recommends for
detecting an
ECP: 1. Read the ECP's extended control register (ECR) at base address +
0x402 and verify
that bit 0 (fifo empty) =1 and bit 1 (fifo full) =0. These bits should be
distinct from
bits 0 and 1 in the port's control register (at base address + 2). You can
verify this
by toggling one of the bits in the control register, and seeing that the
corresponding
bit in the ECR doesn't change. 2. A further test is to write 0x34 to the ECR
and read it
back. Bits 0 and 1 in the ECR are read-only, so if you read 0x35, you almost
certainly
have an ECP. If an ECP exists, you can read and set the ECP's internal mode
in the ECR. "




__________________________
James (Jim) Buchanan
Lexington, Kentucky USA
Climax Class B Locomotive; Builder and Operator
Email: jambuch@...
Web Page: http://home.infi.net/~jambuch/index.html




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Message: 23
Date: Tue, 5 Feb 2002 18:22:19 -0500
From: "William Scalione" <wscalione@...>
Subject: Re: Re: Black Box Goals

But I think you keep forgetting, this is not only for a few people here
who wish to control a CNC machine with it. He probably would like to
sell 1000's of these to all kinds of manufactures who make all types
of automation equipment. It is probably much easier to do that when
it comes in a nice box as opposed to a bare board. I can't imagine he
is doing months of work, spending untold $$ having prototype boards
made and doing it all again to work out the bugs just to sell 200 of them
to people on this list. You can still put one of these into any box you
wish,
It will just be a box within a box.

Bill

>
> > >Can you imagine the space and weight 1,000 PC boxes take up compared
> > >to 1,000 paperback size units?
>
> >GOOD POINT! I wasn't thinking about the space required in stocking them.
>
> Well, kind of a good point, except that he wouldn't be stocking *any*
boxes.
> My idea was that he made *boards* which fit in *our* PC cases. Those
> would be even smaller to 'stock' than the proposed paperback sized
> enclosures (which will be an unnecessary expense anyway because they'll
> ultimately end up inside *another* enclosure)
>
> I just bought a bunch of G320s. They are very pretty devices but the
little
> enclosures they're in serve no useful purpose - it's not like you can
leave
> them exposed in a machine environment.
>
> My point was *one* tidy enclosure which had a nice cable bundle going to
the
> axis motors and a serial cable to the PC - not a pile of little boxes.
>
> I want it to end up looking something like THIS...
> http://www.ahha.com/techdat2.htm
>
>
> _________________________________________________________________
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>
>
> Addresses:
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Message: 24
Date: Tue, 05 Feb 2002 23:43:21 -0000
From: "bwrfromuk" <bwjarandall@...>
Subject: Re - What motor should I use

The reason that mains a.c. motors are limited to 3600 RPM is that you
can't have less than a two pole motor, so with a 60Hz supply the
limit is 3600 RPM.

From a safety aspect I can't see that a 3 phase motor running at
14,600 RPM, through a variable frequency drive, is any more dangerous
than say a 32,000 RPM hand held router. In fact as you don't have
all the commutator segments in there I would suggest it is far more
safe.

I agree that if the output is going to be geared in any way through
either belts or gears it is very important to check that there aren't
any lumps of cast iron spinning at excessive RPM, but in any high
speed machine you need to be very aware of what's in the drive train
and how it's balanced.



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Message: 25
Date: Wed, 6 Feb 2002 00:20:06 -0000
From: "James Owens" <wotisname@...>
Subject: Micron

Hi,

If a scale will give a reading to +-5 mircons how many lines per inch is
this?

Terry



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