On 5/9/2012 12:28 PM, Eric Keller wrote: > On Wed, May 9, 2012 at 11:53 AM, Mark Cason<farmerboy1...@yahoo.com> wrote: > > >> My Dad stopped by, and gave me the motor yesterday afternoon. This >> morning, I talked to the guy he got it from, and he said he buys old >> sewing machines, replaces all the 3 phase motors, with single phase >> ones, and then re-sells the sewing machines for a few hundred dollars >> each. The motor I have came off of an old programmable embroidery machine. >> >> > The embroidery machines are probably the best case given that they are > often like CNC machines. > > My mother has a large number of industrial sewing machines which have been > converted to single phase. Most of them seem to have originally used 3 > phase induction motors. I have never seen one with the three phase > running, but I got the impression that the motors are on all the time at > constant speed. I did collect one of the 3 phase motors when her house was > flooded in the 2010 Nashville floods, but other than drying it out, I > haven't tried to get it running yet. > > I suspect it would be worth scavenging these motors if they would be > willing to sell. Can't imagine they wouldn't be interested. > Eric > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > >
The old 3 phase sewing machine and most of the old single phase industrial sewing machine motors ran all of the time and they had a friction clutch that was moved via the pedal to engage the belt drive to the machine head. I have a couple of old industrial sewing machines and a few motors. If these newer sewing machine "servo" motors are adaptable to positioning applications, that could make for some very inexpensive feed drives on CNC machines. Most of them are substantially built - cast iron frames and 3/4" shafts. Once again I have no idea how the Chinese can make them for what they sell for.. I'm tempted to buy a new one and take it apart. Dave ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
