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Re: Just On-board
In a message dated 99-05-07 23:12:52 EDT, you write:
<< Anyhoo, look forward to seeing this grow. Anyone else keen on largish gantry-style routers? >> I'm currently constructing a 48" x 96" x 24" gantry style router. I have a smaller CNC router that I built a while back and am running with some steppers salvaged from an old HP plotter and a large Toshiba printer, the machine looks rather like a MaxNC mini mill with a Porter Cable laminate trimmer as the cutting head. My controller board is from Dan & co ... one of their 2 amp 3 axis boards.. Gonna get one of the 5 amp boards for my big table soon. I've found that Bishop Wisecarver makes the least expensive quality linear motion components. Jonathan Croad jonty50@... |
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Re: Power Feed, something different,
james owens
Hi Tim,
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Yes you are correct in the assumptiom that I am feeling a little frustrated and overwhelmed by this subject, it seems the more that I do the less I know and dealing with "THE PROFESIONAL PEOPLE" is not very productive. I am an engineer with too many years experience in the repair and reconditioning of machinery but little knowledge of electronics or computor programming. I know people who can do these things but it is very difficult to get straight answers. I have a few of the disks that you refer to and can understand that some may find them almost impossible to remove, I did not mean to put anyone down by my comments. Two wedges driven or pressed together is the only way that such a delicate object could be removed without harm. Regards, Terry. ----- Original Message -----
From: Tim Goldstein To: CAD_CAM_EDM_DRO@... Sent: Thursday, March 09, 2000 4:00 PM Subject: RE: [CAD_CAM_EDM_DRO] Power Feed, something different, From: "Tim Goldstein" <timg@...> Hello Terry, Welcome to the ranks of a participating member of this list!! I think you will find a tremendous amount of help and support here and will never find that the list is short of opinions or suggestions. It sounds as if you are feeling a little overwhelmed by this whole CNC thing. If there are specific areas that are causing you problems just post it to the list and we will all try to get you through them. This post seems a little vague on the area we can provide assistance with. Regarding the encoder wheel on the shaft problem, I have enjoyed the thread and found it interesting. You have to understand that what we are trying to remove is a disc 2" in diameter that is about .005" thick and has 1000 slots near the outer circumference. If you just look at them crooked you can bend the slots or warp the disk. To make it harder they are bonded to the shaft with a epoxy like substance. Welcome aboard, Tim [Denver, CO] timg@... <mailto:timg@...> P.S. you might want to look over my website as it chronicles some of my CNC adventure. Also check out Camtronics at and read Dan's Secrets of CNC. > From: "james owens" <wotisname@...> > > wotisname@... > > This is my first attempt at a reply to a message posted on a > discussion group/news group as I have only just discovered the same. > > I am in the process of converting my workshop and find it very > frustrating getting it all to together before it will all work > and machining can be controlled by computer. The machine hardware > must be designed and built, then the electronics, followed by the > hook-ups and finally the software has to be found, learnt and > installed. It is a great deal to take in from scratch especially > as obtaining the information is sometimes harder than pulling > ones own teeth. > > My point is that it was nice to have a suggestion that could > utilize the hardware and get the system up and running before > frustratision sets in or the cash runs out and the whole thing is > put on hold with bit and pieces all over the shop. > > I could rant on about the simple process of removing an object > from a shaft but I think enough has been said on this subject. > > Regards, > > Terry. ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the discussion of shop built systems in the above catagories. To Unsubscribe, read archives, change to or from digest. Go to: Log on, and you will go to Member Center, and you can make changes there. For the FAQ, go to bill, List Manager |
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Re: My Intro
Dennis Mino
Bob, Can you share the web pages for Space Time Prod. and Boondog? I am
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interested in some stepper boards..... Thanx. ----- Original Message -----
From: Bob Bachman <bobach@...> To: <CAD_CAM_EDM_DRO@...> Sent: Saturday, May 08, 1999 9:01 AM Subject: [CAD_CAM_EDM_DRO] My Intro From: Bob Bachman <bobach@...>day/week/year. discussion of shop built systems in the above catagories. |
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Re: Digest Number 1 & homebrew DRO
Steve Lindsay
I didn't know that US Digital had a PC inerface card. This would
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be the way to go for a dro. Life is probably much similar this way rather than using my program. Mine will work fine but some people have a heck of the time getting the lpt port right to work with the program. I would think an interface card would be faster and US Digital is probably doing a lot of the work on the hardware/interface that I was doing in code. Steve PS.... What a great group! Message: 1 |
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Re: intro update
James P Crombie <[email protected]
Looking forward to seeing your web pages on this. I just gor a brochure for a small tap remover from Taiwan but havn't got a
price on it yet. take a look at I worked in a mold shop that had a Camman tap buster, it used molybdenum tubing for the electrode and a milky colored dialectric coolant fluid. I had used it to remove everything from a 2-56 tap to stuck 2" shcs. These things can save a lot of parts and I wouldn't mind making one for myself . Jon Elson wrote: From: Jon Elson <jmelson@...>-- --------------------------------------------------------------------- James P Crombie Summerside PEI Canada My Astronomy stuff RhinoCad 3D Stuff --------------------------------------------------------------------- |
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Re: Digest Number 2
Andrew Werby
Gar <garfield@...> wrote:
Subject: Just On-board Wanted to say hi to all, and specially to those who've helped me in past, such as Dan Mauch. Hi Dan. Hi the rest of yous CNC guys from RCM. Also special thanks to Bill for "janitoring" the group (that's a term of respect on some other groups I've been part of, so take it as a compliment B). My ongoing projects: CNC'd Sherline's (the usual lathe and mill stuff) 4' X 8' X 24"+ CNC bed router for alum/urethane foam contour routing for eXperimental aircraft and automotive stuff. Guides built around surplus Thomson shafting, bearing, and ball-screws. Both powered by Dan's small and large motor-controllers, respectively, along with the usual AHHA Artisan & PC interface, etc. All the step-motors for both of the above I also got from Dan. Am I a Mauch mooch or what? Heh. Love to learn about and eventually get into CNC'd hot-wire styro cutters, small-scale EDM, and FINALLY discover with the group some encoders that would make nice inexpensive (<$100/axis) linear DRO's feasible. Dang, why doesn't HP make some of their linears with the right resolution! Their rotary's are perfecto. Grumble. Anyhoo, look forward to seeing this grow. Anyone else keen on largish gantry-style routers? Gar Willis Merced, CA [I've been dreaming about a large gantry router for a while now. It seems that surplus parts exist that would facilitate the construction of one of these, but no one source seems to have all the parts I'd need, and I'm hesitant to invest in a pile of parts that might not ultimately be the right size. Any words of wisdom on the best parts to look for? I'd like it to be heavy-duty enough to cut parts out of wood- foam doesn't appeal to me much, although I realize that urethane foam prototyping board makes good patterns (but is brutally expensive.) I'd be interested in discussing the pros and cons of other machinable materials. I've got a pile of surplus I-beams that I was thinking of using as a super-structure, because the compaint about most of these gantries is lack of rigidity in the traveling beam. But these things are heavy, so I'd have to find correspondingly bigger motors, I suppose. The main reason I'm considering building instead of buying one of these (aside from basic skinflintery) is because the available units I've seen never have much z-axis- they all seem to be made for sign-makers. But with extra z-axis comes another problem- how to find end-mills long enough to reach? And even if they can extend far enough, are they going to be stiff enough to work? Has anybody dealt with this, and come up with a solution? How far along is your router project- any pictures yet?] Andrew Werby Andrew Werby - United Artworks Sculpture, Jewelry, and Other Art Stuff |
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Re: Power Feed, something different,
james owens
wotisname@...
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This is my first attempt at a reply to a message posted on a discussion group/news group as I have only just discovered the same. I am in the process of converting my workshop and find it very frustrating getting it all to together before it will all work and machining can be controlled by computer. The machine hardware must be designed and built, then the electronics, followed by the hook-ups and finally the software has to be found, learnt and installed. It is a great deal to take in from scratch especially as obtaining the information is sometimes harder than pulling ones own teeth. My point is that it was nice to have a suggestion that could utilize the hardware and get the system up and running before frustratision sets in or the cash runs out and the whole thing is put on hold with bit and pieces all over the shop. I could rant on about the simple process of removing an object from a shaft but I think enough has been said on this subject. Regards, Terry. ----- Original Message -----
From: wanliker@... To: CAD_CAM_EDM_DRO@... Sent: Wednesday, March 08, 2000 11:57 PM Subject: [CAD_CAM_EDM_DRO] Power Feed, something different, From: wanliker@... I think everyone missed the point of what I was trying to get done. I am trying to get the lurkers out and talking, and thought maybe that showing them that steppers would make a good manual, potentiometer, controlled power feed would be helpful to a lot of folks, especially if there equipment does not have it built in. And once they had the power feed, then it would be easy to hook up the computer for a full blown CAM system. We need more variety on the CAD_CAM__ list. Oh well the best laid plans of mice and men. bill ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the discussion of shop built systems in the above catagories. To Unsubscribe, read archives, change to or from digest. Go to: Log on, and you will go to Member Center, and you can make changes there. For the FAQ, go to bill, List Manager |
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My Intro
Bob Bachman
Hello Everybody,
Glad to see all the activity on the new list. My info: I have a small shop here in mid-Michigan which my wife and I operate. (We are semi- retired.) Current projects are an EMCO-MAIER CNC lathe with an inoperable control, some DRO ideas, and a retrofit of a bp clone cnc mill. The mill had a Crusader II control on which I have thrown in the towel. The mill has servo motors and scales. I'll retrofit to a pc control of some sort - maybe Dan Mauch's setup or AHHA or ?? Been experimenting with a stepper driver board from Simon at Space-Time Prod. and a parallel port board from Boondog. Oh ya, trying to learn Intellicad too! Not enough hours in a day/week/year. Happy Tinkering, Bob |
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Re: Burning out taps in a milling machine
Russell Dunn <[email protected]
Hi Jon,
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There is one part of your description that is, I think, missing and it is the part I would like more info on please. How did you route the electric current from it's source to the brazing rod electrode, and how many amps are we talking about here please. I would think that you did not pass the current through the machine bearings and your alternative path is of real interest to me. Kind regards, Russell Dunn near Newman, Western Australia ---------- |
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[Fwd: Wire EDM]
Charles Brumbelow
More CAM . . .
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Richegge@... wrote:
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Introduction and CAD Question
Roger Mason
Hi,
I've been directed towards this list from the modeleng-list. I recognise a number of the names of contributors to this list as being folk who also post to the model engineering list. My main interest is tools and machinery, although steam & clocks are also interests. I was tempted to come and lurk on this list as the idea of being able to control a lathe or milling machine from a computer has obvious benifits. If only I could work out how to do it. Hopefully I will learn by "reading the mail". I notice that the heading of this list includes "CAD". I am trying to teach myself how to use AutoCad in my spare time. I haven't got very far with it, but can produce simple two dimensional, dimensioned, drawings. I have what ought to be a simple question, but I cannot seem to find the answer. How can you copy items (lines, text, dimensions, etc.) from one layer to another? All my attempts just duplicate the items on the original layer! Can it be done? If so how? I hope this is not too far outside the brief of this list. If it is please let me know, and I will resume the lurk mode! Cheers, Roger Mason, in Hong Kong |
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[Fwd: Drawing Gears]
Charles Brumbelow
Take a look at these pages . . . Charles
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Edward Haas wrote:
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intro update
Jon Elson
Oh, yes, one other thing mentioned that I did recently --
I had some broken off taps in parts I was making, and decided one weekend to see what I could do about that. I threw together a low power EDM system from a large assortment of miscellaneous parts. I made an electrode from a piece of 1/16" brazing rod with one end brazed into a socket head cap screw. I threaded the screw into a big nylon spacer I had, and mounted that in my milling machine's Jacobs chuck. I was able to use the CNC mill's positioning system to move the electrode just where I wanted it. For EDM fluid, I first tried tap water, but that foamed and sputtered away quickly. I then went to alum-tap tapping fluid, which worked fantastically as an EDM fluid. I set up for about 30 V open circuit, and started the mill in the slowest backgear range (80 RPM). With the brazing rod almost perfectly straight, it orbited about .010 - .015", clearing out a bigger hole in the tap than the diameter of the rd, itself. I programmed the CNC to advance the spindle at about .006 to .01" per minute, and used the feed override to keep EDM current between .25 and .5 Amp. I replenished the fluid as needed, and raised the electrode and cleaned out the hole when progress stopped (about every .020"). I got rid of each tap in about 10 to 25 minutes, depending on how much of the tap was left down in the hole. Mostly, after the EDM operation, all that was left of the tap was the very tip of the flutes, and they could be picked out with a fine needle. All the holes were later tapped and the parts used. An earlier attempt to burn the taps out with Nitric Acid was not very successful, and left the aluminum slightly stained, but the EDM did no damage to the workpiece at all. I plan to put all this, including diagrams and photos on my web pages. Jon |
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Just On-board
Wanted to say hi to all, and specially to those who've helped me in past, such as Dan Mauch. Hi Dan. Hi the rest of yous CNC guys from RCM. Also special thanks to Bill for "janitoring" the group (that's a term of respect on some other groups I've been part of, so take it as a compliment B).
My ongoing projects: CNC'd Sherline's (the usual lathe and mill stuff) 4' X 8' X 24"+ CNC bed router for alum/urethane foam contour routing for eXperimental aircraft and automotive stuff. Guides built around surplus Thomson shafting, bearing, and ball-screws. Both powered by Dan's small and large motor-controllers, respectively, along with the usual AHHA Artisan & PC interface, etc. All the step-motors for both of the above I also got from Dan. Am I a Mauch mooch or what? Heh. Love to learn about and eventually get into CNC'd hot-wire styro cutters, small-scale EDM, and FINALLY discover with the group some encoders that would make nice inexpensive (<$100/axis) linear DRO's feasible. Dang, why doesn't HP make some of their linears with the right resolution! Their rotary's are perfecto. Grumble. Anyhoo, look forward to seeing this grow. Anyone else keen on largish gantry-style routers? Gar Willis Merced, CA |
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Re: Digest Number 1
Scott S. Logan
[Um, could someone start from the beginning and tell us what NAMES is or_N_orth _A_merican _M_odel _E_ngineering _S_ociety They organize an annual exposition of Models and Model Building, also Model related vendors. See for details and photos. Next year's show will be the last weekend in April, same place, longer hours (till 8PM Saturday). -- Message from Scott Logan Support the anti-Spam amendment ssl@... Join at |
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Re: Digest Number 1 & homebrew DRO
Marshall Pharoah
I've been looking at this for some time as I would like to add it to a
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miniature vertical mill I have. Questions I have are: It appears that the scales are a flexible mylar. How do you attach them, with some sort of light spring arrangement maybe? What about temperature stability? My shop is not heated. COuld you post some pictures in the drop box showing your mounting schemes? Maybe you should do an article on this for HSM. My background: While I can and have written some windows software, my real area of expertise is in the area of microcontroller programming for control of telephony devices, (real time control). I am familiar with the 6802/68HC11/68705/PIC processors. I muck with woodworking and metalworking. Thanks for the info. rmcilvaine@... wrote:
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Marshall Pharoah Software Engineer Adirondac Software |
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Re: Hello
Dan Mauch
www.seanet.com/~dmauch
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Dan -----Original Message-----
From: Brian Fairey <bfairey@...> To: CAD_CAM_EDM_DRO@... <CAD_CAM_EDM_DRO@...> Date: Thursday, May 06, 1999 1:36 PM Subject: Re: [CAD_CAM_EDM_DRO] Hello Dan, there you are, what is the URL of your web page? Brian, Ont, Canada. Dan Mauch wrote: Looks like in time this will be a good site.Dan |
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