Re: [Emc-users] Cable drive for a gas torch pattern follower?
--- On Mon, 3/25/13, jeremy youngs jcyoung...@gmail.com wrote: http://www.ebay.com/itm/3Axis-Nema-23-Stepper-Motor-425oz-in-CNC-Mill-Controller-SD-2H044MA-driver-/130835449799?pt=LH_DefaultDomain_0hash=item1e766687c7 i like the idea of using a capstan with offsetting weight , if you use 2 motors for x,y then use the same weight in tension the motors will see nothing but frictional resistance . If your capstan is sufficently large you should see very good accel and top feed rates , i think you could do this for less than 500 easily I explained the idea to Ned and he wants to add that to the torch. He also wants to build an X-Y table for his plasma cutter capable of holding 4x8 foot sheets. Would have to make it around 8.5x9 foot so the head could cover the whole sheet. Not a problem building the table, he has plenty of precision ground shaft and linear bearings at his shop that have been laying about, looking for something to be done with them. Think that same kit on ebay would be strong enough for the X-Y table? I figure a cable drive at both sides of the gantry with a synchronizing shaft at one end, could use two of the motors for that axis and just always command them the same. -- Own the Future-Intelreg; Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://p.sf.net/sfu/intel_levelupd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Cable drive for a gas torch pattern follower?
On 26 March 2013 23:49, Gregg Eshelman g_ala...@yahoo.com wrote: Not a problem building the table, he has plenty of precision ground shaft and linear bearings at his shop that have been laying about, looking for something to be done with them. I like the HBot layout. (I reckon it would be another good use for bicycle chain. http://youtu.be/ei4lPk_aM9Y -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Own the Future-Intelreg; Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://p.sf.net/sfu/intel_levelupd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Cable drive for a gas torch pattern follower?
--- On Tue, 3/26/13, andy pugh bodge...@gmail.com wrote: On 26 March 2013 23:49, Gregg Eshelman g_ala...@yahoo.com wrote: Not a problem building the table, he has plenty of precision ground shaft and linear bearings at his shop that have been laying about, looking for something to be done with them. I like the HBot layout. (I reckon it would be another good use for bicycle chain. http://youtu.be/ei4lPk_aM9Y Interesting setup. Certainly solves the issues of running long wires to the gantry and having to do something to keep them from wadding up and getting caught in the works. Chain can be less expensive that multi wire cable. I was thinking this arrangement must be quite a bit like an etch-a-sketch but that uses two crossed rods which are held at their ends by tensioned steel cable, no support tracks at the rod ends. For a plasma cutter where height control is pretty much irrelevant, that could work assuming the cables could be held tight enough. -- Own the Future-Intelreg; Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://p.sf.net/sfu/intel_levelupd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Equipment I just got for free.
how much is he asking for the unit? -- Own the Future-Intelreg; Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://p.sf.net/sfu/intel_levelupd2d ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
