On Fri, Aug 17, 2012 at 2:49 PM, Gene Heskett <ghesk...@wdtv.com> wrote: > On Friday 17 August 2012 09:30:45 andy pugh did opine: > >> On 17 August 2012 13:48, Stuart Stevenson <stus...@gmail.com> wrote: >> > Some tapping heads will release after a set amount of extension of the >> > head components. These heads also self reversed upon axis retraction. >> > This allows the programmer to drive to a position - dwell to allow >> > the head to reach extension and release - reverse motion to retract >> > the tap. >> >> This seems to indicate a need for not one, but several, non-rigid >> tapping routines. > > Also I believe, it would be valuable to have a discussion of the various > offerings, so that I for instance, who might have a need for tapping 40 > each 6-32 to 10-32 holes to a depth of perhaps 1/2" occasionally, might > stand a chance of actually buying something that works better that I can > do. So far as I know, no mechanical tap driver can do that, the 6-32 > needing several reversal extraction cycles to clean and re-apply the > cutting oil if any hope of reaching that half inch depth with full thread > depths is to be expected without broken taps by the pound, and the > associated lengthy edm sessions that involves when trying to save the part.
The important part is use machine taps not hand taps JT has a little guidance http://gnipsel.com/linuxcnc/g-code/taps.html also would be nice to measure the torque while tapping this means you can swap out a tap when it dulls Dave Caroline ------------------------------------------------------------------------------ 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-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
