Re: [Emc-users] CNC little hobber

2016-10-02 Thread andy pugh
On 2 October 2016 at 16:17, wrote: > I have looked at some gearing diagrams of gear hobbers and I noticed that a > 'differential' gear set was included. What does that actually do? It is for helical gears, and is linked to the feed gears. (Also easy to do with LinuxCNC

Re: [Emc-users] CNC little hobber

2016-10-02 Thread Dave Caroline
The differential gears are nothing to do with prime but to add the traverse into the equation and also to add a rotation for a helical. I have a diagram of one at http://www.collection.archivist.info/hobbing.html then you can wind the hob back along its cut traverse and it remains "in gear" Dave

Re: [Emc-users] CNC little hobber

2016-10-02 Thread richshoop
; Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/list

Re: [Emc-users] CNC little hobber

2016-10-02 Thread Gene Heskett
On Sunday 02 October 2016 03:02:20 Dave Caroline wrote: > And I used Andy's info and cnc'd a Barber Colman hobbing machine > > http://www.collection.archivist.info/searchv13.php?searchstr=barber+co >lman+pd > > Dave Caroline > I'm impressed. Nice work Dave. Cheers, Gene Heskett -- "There are

Re: [Emc-users] CNC little hobber

2016-10-02 Thread Gregg Eshelman
Replacing all the gearing that interconnects the various axes with encoders and motors on each bit that spins. From: "richsh...@comcast.net" To: emc-users@lists.sourceforge.net Sent: Saturday, October 1, 2016 3:49 PM Subject: [Emc-users] CNC little hobber

Re: [Emc-users] CNC little hobber

2016-10-02 Thread Dave Caroline
And I used Andy's info and cnc'd a Barber Colman hobbing machine http://www.collection.archivist.info/searchv13.php?searchstr=barber+colman+pd Dave Caroline -- Check out the vibrant tech community on one of the world's

Re: [Emc-users] CNC little hobber

2016-10-01 Thread andy pugh
On 1 October 2016 at 22:49, wrote: > OK, I know nothing about gear hobbing, but have seen that youtube video of > the little hobber, what kind of work would need to be done to build a cnc > version of such a machine? It's actually almost trivial with HAL.