On Monday 07 December 2020 06:19:15 andy pugh wrote: > On Mon, 7 Dec 2020 at 11:13, Gene Heskett <[email protected]> wrote: > > Now comes the improvement request for two more pins into motion. > > > > I need a pin to disable the backlash move, until the spindle has > > actually stopped. > > Are you sure that isn't what already happens? (I guess that Halscope > can answer the question).
> I would expect the Z axis backlash reverse to happen when the Z axis > actually changes direction, based on the encoder direction change. I'll have to verify that, Andy. If that is the case, there must be something else afoot. Perhaps just a small, take up the gear lash move and kill some time before getting serious with the torque might work to trigger the backlash move. Gear lash is only a degree or so but that s/b several counts of the encoder since the scale is just north of 14,000. But it may take a bit, my wife has reached the end stage of her COPD. Hours, maybe a day or so left. I was invited to come and visit yesterday despite the covid lock down. And I'll go back today. Struggling to breath, her BLOX was 78% when I walked in the door. That's not good. I'd guess her weight as < 60 lbs now. That Y where the collarbone splits at the base of her neck, is a hollow at least 2.5" deep now. And they just called ay 7.15 AM urging me to do a ten-eighteen and get there. > Have you considered a floating tap holder? You wouldn't need much > float. Can this tap holder handle the 7/8" diameter tap hats I have made? They are keyed into the R8 by a cap screw in the side engaging a cutout in the lip of the R8 holder, and the tap is precluded from any rotational slippage by 4 grub screws gripping the square at the rear of the tap. Its worked quite well, totally stopping the slippage of a tap in a ER holder. A pair of 15" wrenches on the TTS and ER nut can't pull it tight enough to stop the slippage. The hats do. Probably later, when the above is done. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
