On Tuesday 18 November 2014 06:42:43 andy pugh did opine And Gene did reply: > On 18 November 2014 10:29, Mark Wendt <[email protected]> wrote: > > is there any way with screw mapping that I could "adjust" the Z axis > > with screw mapping so as it hits each individual "inch" along the X > > axis? > > You could populate a "lincurve" component with the required Z offset > for each X. Then link the lincurve X axis input to the axis position > pin. > Then use an "offset" component on your Z position driven from the > output of the lincurve. > > http://www.linuxcnc.org/docs/html/man/man9/lincurve.9.html > http://www.linuxcnc.org/docs/html/man/man9/offset.9.html
I see the man page for lincurve has been simplified since I last tried to use it for spindle speed corrections on my lathe in 2013. No mention now of a maximum number of setpoints, IIRC it was 16 previously. Sufficient for me, with a 12 to 13" table travel, but Marks machine is obviously 3 or 4x longer if he is to do a correction every inch. Then the secondary problem is how to read that file and hook it to the setp function. Not unsolvable, but might have to conjure up something and compile it, to be run once at startup, a postgui function maybe? Or better yet, if the machine has homing switches, hooking that function up the the end of the homing sequence would appear to be the method of synchronizing the the files settings to the machine? 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 ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
