On 12 May 2012 00:11, Viesturs Lācis <viesturs.la...@gmail.com> wrote:
> The problem is that they do not have the tools for 0,5 module, > smallest they have is 0,7. But with ~124 mm pitch diameter the tooth > count changes from 247 to 177, which significantly reduces the > reduction ratio - from 123,5:1 to 88,5 (bigger is better; welding > robot had total reduction ratio of 640:1 in shoulder and elbow > joints). You can get a 0.5mod hob from Arc Eurotrade, use that to make the flex-spline, and also use it to make a shaving tool for the internal. At least in theory. In practice I don't think you need or want an actual involute form for a harmonic drive. If you have a milling machine with a slotting head and a rotary table then you can single-point the internal gear. The tool could be ground to any required profile. (Though I would suggest getting it wire-eroded from HSS) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ 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
