My CNC mill (Lagun 320) has a switch on the gear change lever and the control will complain if it's not in the correct range for the requested speed. That mill is next on my LinuxCNC retrofit schedule once I get the lathe sorted and working properly. The control on the mill has too little memory so I drip feed it from a PC, and I also need to add 4th axis to it.
------Original Mail------ From: "Gene Heskett" <[email protected]> To: <[email protected]> Sent: Thu, 18 Sep 2014 13:53:32 -0400 Subject: Re: [Emc-users] Question on "gearchange" use? On Thursday 18 September 2014 09:48:12 [email protected] did opine And Gene did reply: > I'd also be interested in some samples. The lathe I am working on has 9 > gear ranges and it might be nice to utilize perhaps three of them to > optimize torque in the speed range desired. The spindle encoder is on > the spindle so it will give actual spindle speed no matter what range > the gears are in. There are plenty of inputs available if I wanted to > put some sensors on the gear shifts so LinuxCNC could tell what range > it's in. Mine is on the spindle too, but only 2 gears at about a 1/2.2 ratio. Not nearly as complex. I have dreams of checking the requested speed, and if its not usable in the range its in, block that speed, sending only a 30 rpm request, and run a windshield wiper motor to shift it, then let the requested speed thru. I have a small pile of 12volt auto motors that might be able to be cobbled up to do that. I'll go look and let my imagination out to play. ;-) 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) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that Matters. http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that Matters. http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
