EBo wrote: > On Tue, 03 Apr 2012 12:37:45 -0500, Jon Elson wrote: > >> EBo wrote: >> >>> Have you tried any ridged tapping in aluminum? Might break a few >>> taps, >>> but it would be worth testing out and demonstrating. >>> >>> >>> >> An easy check before risking any tooling is to do the operation in >> air. >> Possibly illuminate the tap with a flashlight to eliminate perceived >> strobe >> effects from fluorescent lights. You could even put a screw of the >> right thread in the spindle. If the thread appears to be motionless >> during the spindle synch part, then the Z movement is matching the >> thread pitch pretty well. I did this a few times before risking an >> expensive tap to be sure the thing was really working correctly. >> > > agreed. Before I would run any taps I would run it in air, etc., but I > would try a new cheap tap after the initial tests looks good. If I can > tap 5 to 10 holes in a piece of scrap without breaking it using a cheap > tap, then I would feel OK risking the expensive ones. That's my 2c > Also, assuming a servo system, I would use Halscope to check the following error on the Z axis during the spindle reversal. If the following error stays small, then you should be OK. If there is a spike in following error, then the spindle reversal needs to be made more gradual.
Jon ------------------------------------------------------------------------------ Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
