On Tuesday 10 July 2012 20:34:43 andy pugh did opine: > On 11 July 2012 00:28, Gene Heskett <[email protected]> wrote: > >> Incidentally, I suspect you could get the same result using the FUP[] > >> function: #<_x_div> = [ FUP[ #<_total_cut> / 0.015 ]] > >> #<_x_dec> = [#<_total_cut> / #<_x_div>] > > > > Andy; This works well for the first cut size but not so well for the > > next section of the shaft that is about .1 larger, > > You probably want the complimentary round-down function in that case: > FIX[] > http://www.linuxcnc.org/docs/2.4/html/gcode_overview.html#sub:Unary-Ope > ration-Value
And that seems to have worked, for this particular final size. Is there any way to effectively predict which will give the correct result? I ordered some thrust bearings today, 9mm bore by 16.8 OD, 5mm thick, rated to support 700+ kg moving under load. Yet to be determined is how I orient things when assembling them. Radial loads shouldn't exceed 10kg if properly aligned with the nut motion, so I am not going to worry about the radial load. The old dial will not of course have markings that mean squat so I think I'll use the handle retainer screw to tension the preload and ignore the dial by removing it. So this 2nd section will probably be 9mm in diameter with a small cup to catch the outside shaft end of the of it with the crank handle portion pushing on the cup to establish a bit of preload. That then will allow a 17mm or so diameter of inner end that can be bored to fit the 8mm screw so that a small roll pin can retain the end of the screw. Either that, or make me another taperlock hub. That at least would allow me to take it back apart, which the roll pins would make a right PIMA if not impossible. But since that would require a substantial hub flange for the driving and unlocking screws, I don't think I could nibble it out to make that much room as the other one I made is well over an inch in diameter & projects over half an inch. Maybe a threaded bore shaped to hold a compression ring being compressed into the screw by a compression nut? I'll have to look around and see what I can find along those lines. See what happens when I let my mind, whats left of it, out to wander around without a chaperon? :) Thanks Andy. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! My idea of roughing it is when room service is late. ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
