2012/5/13 andy pugh <bodge...@gmail.com>: > On 13 May 2012 12:04, charles green <xxzzb...@yahoo.com> wrote: >> wire electric discharge cutting? > > I was thinking that might be the easiest approach for low volume. > > How many of these do you need to make? And what is the budget?
Don't know, maybe 2 or 3. Just to try out, if something like that can be built and how would such a wave reducer work. Budget? The less the better :) Cutting itself - some 20-30 EUR (M0,5 gear with 246 teeth). The problem would be obtaining the the path, because correction has to be applied - I can calculate the distance between center of the gear and center of the tool, but I have no idea, how to obtain those involute splines that make the shape of the teeth. > As far as I know the only way to make internal gears is by "shaving" > http://youtu.be/_j6KQ96YZM0 Yes, that is the exact process! There is a special machine for this at school, I just need the tool. That is what I was asking for in my first post and actually that is what I still would like to find out - where could I get that shaving tool for M0,5 gears? > It is certainly a process which lends itself to CNC control Not necessarily, if You have special gear cutting machine available :) > However, the cutters are probably not off-the-shelf items. I would say that they are. As long as the modulus is standard value and the pressure angle is standard (which they are for my case). Cutter for module 0,63 gear would be something crazy, but module 0,5 is fairly standard. 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
