well, there's your spline form right there in the video. screen capture. the eliptical bearing is nice, but you can get away with a diametrically opposed pair of rollers for that function.
more precision in the worm gear polishing technique can be achieved if the worm and gear have a 'hunting tooth' design for worms with more than one start. messy process either way. has anyone ever heard of a ball worm? --- On Sun, 5/13/12, Viesturs Lācis <viesturs.la...@gmail.com> wrote: > From: Viesturs Lācis <viesturs.la...@gmail.com> > Subject: Re: [Emc-users] Some advice needed > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Date: Sunday, May 13, 2012, 5:55 AM > 2012/5/13 charles green <xxzzb...@yahoo.com>: > > i read about making precise worm gears for telescope > mounts starting with a more or less rough notching of the > gear followed by a 'running in' of the mating surfaces with > abrasive fluid until the final form was achieved. > > In school this was briefly mentioned. AFAIK it simply > polishes mating > surfaces to increase the contact surface, but it does not > ensure > precision of the worm or gear. > > >From the suggestions it seems that the concept of wave > reducer is not > completely understood. > Here is a demonstration: > http://www.youtube.com/watch?v=bzRh672peNk > > These reducers are very widely used for robot arms and > wherever high > reduction ratio and large torque in limited space is > required. > > Viesturs > > ------------------------------------------------------------------------------ > 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 > ------------------------------------------------------------------------------ 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
