forget color wrote: >> There are G250/G251 drives from Gecko, which might appear superior to >> Xylotex. >> Considering your need of high customization, G540 (break out board + 4 x >> G250) will not suit you. >> > > Thanks for the response. Could a tool changer be thought of and/or > used as a '4th axis'? I would normally think of a 4th axis as > rotation of the cutting bed or something like that, but can one setup > emc to think of the 4th axis as anything (including tool changing)? > If so, then the 540 brb might work (or, for that matter, the Xylotex > 4-axis kit). I don't expect to need anything else that moves. > Although maybe tool changing could require more than one motor? > > You could use 4th driver for tool changer, but it is not good to push it as 4th axis through emc/axis. I think, you can just create XYZ machine and then add one more stepgen module to control tool changer. >> You probably should look how tool changers are implemented. >> Imaging a wheel with small rings, holding brushes. >> > > That's a nice idea. I was thinking of starting with something as > simple as possible. For example, setting down brushes in wells (that > are in fixed locations) designed to hold them, and picking them up as > needed. Although the more I think about this the more complicated it > gets. > > Why? you record location of each tool in XY space, make brush holder spring loaded, so you need to squeeze it in order to release a brush. Add a coil to do the "squeeze"... So you use 3d G-codes to choose needed brush, and use some additional command to squeeze the holder in order to drop or pick up a brush... >> However, your mail makes me think that you are going to deal with a >> problem that plotters do not have, paint drip. >> > > Indeed, but for me this is a good thing, not a bad one :) > > ------------------------------------------------------------------------------ > Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA > -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise > -Strategies to boost innovation and cut costs with open source participation > -Receive a $600 discount off the registration fee with the source code: SFAD > http://p.sf.net/sfu/XcvMzF8H > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users >
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