On Tue, Nov 18, 2014 at 8:13 AM, Gene Heskett <[email protected]> wrote:
> > > Mark > Setp x0 v0 > setp y0 v0 > > setp x1 3.5 > setp y1 -.003 > > setp x2 7.0 > setp y2 .006 > > setp x3 11.5 > setp y3 .002 > > setp x4 15.0 > setp y4 -0.002 > > etc etc > > Between x0 and x1 it will interpolate that -.003, so at 1" you would get a > -0.00085714285714285714286 correction out of it. ditto for the x1 to x2 > range it will interpolate, even giving a zero correction at one point in > that slide. A correction that is calculated and applied every millisecond > in essentially real time. If you have a real bump at so and so, set a > correction point on both sides of the bump. There is nothing there that > makes you do the correction in precisely 3.5" bits of the travel. > Okay, that is _not_ what I want to happen. Lets presume that X0 is my arbitrary median height. At X1, which coincides with station #1 in the taper, the table is actually .002" lower than the table at X0. At X2, which coincides with station #2 in the taper, the table is actually .002" higher than the table at X0 (those numbers aren't the real ones, I'm just using them for an example. There is no Y axis on my machine, just X and Z. The Z height varies for each X station. What I want to accomplish, is for the Z axis to compensate for the table being .002" low at X1, and then to compensate for the table being .002" high at X2. > Reading between the lines Mark, it seems to me you are doing the saw in 1" > increments because that is how you are doing the taper. That 1" > limitation may be overkill when with lincurve doing the corrections, you > might be able to do it in one 56" run. If its actually stopping for > millisecond or so at these 1" way points, that could be creating some of > the wibbles you are now having to plane off by hand. That cannot be good > for the accuracy of the glue line thickness. > I need that overkill because I _need_ the taper to hit those dimensions as exactly as they can at those 1" intervals. Otherwise the finished taper will be nothing like the calculated taper. It really does need to hit those dimensions at each station. I can interpolate the dimension between each 1" station, and it does, but by the time the saws get to the next station they do need to be at the calculated Z. The saws don't need to stop, just cross the station at the correct Z height. > Cheers, Gene Heskett > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ 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
