----- Original Message ----- 
From: "Alex Joni" <[EMAIL PROTECTED]>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: Wednesday, October 03, 2007 3:30 AM
Subject: Re: [Emc-users] Robocrane


> Hi there,
>
> I don't think it would be stiff enough to do that.
> You need the extra 3 wires for stability (even if you still do only XYZ
> work).
> I intended to use the 3-wire version for plasma cutting, where you don't
> have any forces besides the weight of the plasma torch.
>
> Best regards,
> Alex Joni
>
> ----- Original Message ----- 
> From: <[EMAIL PROTECTED]>
> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
> Sent: Wednesday, October 03, 2007 1:06 AM
> Subject: Re: [Emc-users] Robocrane
>
>
>> Dear Kirk and all:
>>
>> Thank you for supplying me with relevant information.  I think that Alex
>> Joni's toy would give me needed information
>> to implement a step in the right direction. I wonder if a tripod made 
>> more
>> robust could do milling and routing.
>>
>> Best regards,
>>
>> Andrew
>>
>> ----- Original Message ----- 
>> From: "Kirk Wallace" <[EMAIL PROTECTED]>
>> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
>> Sent: Tuesday, October 02, 2007 3:30 PM
>> Subject: Re: [Emc-users] Robocrane
>>
>>
>>> Hello Andrew,
>>>
>>> I just looked at the NIST site. The Robocrane is quite a complex
>>> project. I suspect that EMC should be able to serve as the foundation
>>> for your project since you can plug in your own kinematics and EMC is
>>> highly configurable hardware interface wise. I suspect the Robocrane is
>>> a step further in the hexapod evolution, so you should maybe study a
>>> search on "hexapod" at linuxcnc.org. Check these:
>>>
>>> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Alex_Joni's_Toy
>>> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Koppi's_Toy
>>> http://cvs.linuxcnc.org/lxr/source/configs/hexapod-sim/
>>>
>>> Be prepared to create your own C code.
>>>
>>> If you haven't already done so, you might want to study the basics by
>>> getting a demo CD working:
>>>
>>> http://www.linuxcnc.org/content/view/21/4/lang,en/
>>>
>>> Then interface an encoder to your parallel port using the etch-servo
>>> configuration (in Sample Configurations, study etch.ini and etch.hal for
>>> connection information) and a NetMOS parallel port card ("lspci -v" will
>>> come in handy).
>>>
>>> Then maybe drive a stepper or DC servo motor like this setup:
>>>
>>> http://emergent.unpy.net/projects/01142347802
>>>
>>> I found a good motor and encoder in a junk Epson C-80 printer (sure
>>> hated to see that printer go).
>>>
>>> Good luck. I'll try to help, if I can. Others here are better at the
>>> nitty-gritty stuff.
>>>
>>> Kirk Wallace
>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> On Mon, 2007-10-01 at 16:29 -0400, [EMAIL PROTECTED] wrote:
>>>> Dear enc-users:
>>>>
>>>> Hello my name is Andrew I am new to this list.  I want to make a cable
>>>> robot milling machine similar to the
>>>> NIST 1meter robocrane milling machine.  Any help would be appreciated.
>>>> If this list is not relevant
>>>> to obtain this kind of information, please direct me to where I can
>>>> obtain it.  I am starting from scratch.
>>>> I want to obtain all relevant information before I start.  Are there
>>>> any simulations software that can be run on
>>>> a PC.
>>>>
>>>> Thank you for your help,
>>>>
>>>> Andrew
>>>
>>>
>>>
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>>>.
>>
>>
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>
>
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