I'm having issue with three circles that share the same center not aligning. I'm trying to cut a .20" hole with a 1/8" mill, then cut a .36" diameter countersink with a 1/4" mill and then bevel the top edge of the larger circle. The 2nd circle is centering roughly -.015" off center on the Y axis. The 3rd circle lines up fine with the 2nd. The circles are cutting true, not ovalled.
I thought I may be losing steps but when I jog the X and Y axis and restart the program from random points, the 1/8" mill returns to the previously cut hole and runs through the cut without even touching the previously cut edges.
I tried changing mills without moving the X or Y axis and it still happens repeatedly.
It's probably obvious, but I'm pretty new to CNC. I'm using LazyCam and Mach 3 with a homemade CNC purchased off eBay.
Please advise...
Here's the code:
N5 (File Name = hole on Tuesday, May 03, 2011)
N10 (Default Mill Post)
N15 G91.1
N20 M5 M9
N25 M6 T15(TOOL Change 1/8" cuttng aluminum)
N30 G43 H15
N35 G0 Z0.3000
N40 M3 S6000
N45 X0.2175 Y0.1800
N50 Z0.0803
N55 G1 Z0.0700 F2.00
N60 G2 I-0.0375 J0.0000 F12.00
N65 G0 Z0.0803
N70 G1 Z0.0600 F2.00
N75 G2 I-0.0375 J0.0000 F12.00
N80 G0 Z0.0803
N85 G1 Z0.0500 F2.00
N90 G2 I-0.0375 J0.0000 F12.00
N95 G0 Z0.0803
N100 G1 Z0.0400 F2.00
N105 G2 I-0.0375 J0.0000 F12.00
N110 G0 Z0.0803
N115 G1 Z0.0300 F2.00
N120 G2 I-0.0375 J0.0000 F12.00
N125 G0 Z0.0803
N130 G1 Z0.0200 F2.00
N135 G2 I-0.0375 J0.0000 F12.00
N140 G0 Z0.0803
N145 G1 Z0.0100 F2.00
N150 G2 I-0.0375 J0.0000 F12.00
N155 G0 Z0.0803
N160 G1 Z0.0000 F2.00
N165 G2 I-0.0375 J0.0000 F12.00
N170 G0 Z0.0803
N175 G1 Z-0.0100 F2.00
N180 G2 I-0.0375 J0.0000 F12.00
N185 G0 Z0.0803
N190 G1 Z-0.0200 F2.00
N195 G2 I-0.0375 J0.0000 F12.00
N200 G0 Z0.0803
N205 G1 Z-0.0300 F2.00
N210 G2 I-0.0375 J0.0000 F12.00
N215 G0 Z0.0803
N220 G1 Z-0.0400 F2.00
N225 G2 I-0.0375 J0.0000 F12.00
N230 G0 Z0.0803
N235 G1 Z-0.0500 F2.00
N240 G2 I-0.0375 J0.0000 F12.00
N245 G0 Z0.0803
N250 G1 Z-0.0600 F2.00
N255 G2 I-0.0375 J0.0000 F12.00
N260 G0 Z0.0803
N265 G1 Z-0.0700 F2.00
N270 G2 I-0.0375 J0.0000 F12.00
N275 G0 Z0.0803
N280 G1 Z-0.0700 F2.00
N285 G2 I-0.0375 J0.0000 F12.00
N290 M5 M9
N295 M6 T5(TOOL Change 1/4" roughing)
N300 G43 H5
N305 G0 Z0.3000
N310 M3
N315 X0.2350
N320 Z0.0803
N325 G1 Z0.0700 F2.00
N330 G2 I-0.0550 J0.0000 F20.00
N335 G0 Z0.0803
N340 G1 Z0.0600 F2.00
N345 G2 I-0.0550 J0.0000 F20.00
N350 G0 Z0.0803
N355 G1 Z0.0500 F2.00
N360 G2 I-0.0550 J0.0000 F20.00
N365 G0 Z0.0803
N370 G1 Z0.0400 F2.00
N375 G2 I-0.0550 J0.0000 F20.00
N380 G0 Z0.0803
N385 G1 Z0.0300 F2.00
N390 G2 I-0.0550 J0.0000 F20.00
N395 G0 Z0.0803
N400 G1 Z0.0200 F2.00
N405 G2 I-0.0550 J0.0000 F20.00
N410 G0 Z0.0803
N415 G1 Z0.0100 F2.00
N420 G2 I-0.0550 J0.0000 F20.00
N425 G0 Z0.0803
N430 G1 Z0.0000 F2.00
N435 G2 I-0.0550 J0.0000 F20.00
N440 G0 Z0.0803
N445 G1 Z-0.0100 F2.00
N450 G2 I-0.0550 J0.0000 F20.00
N455 G0 Z0.0803
N460 G1 Z-0.0100 F2.00
N465 G2 I-0.0550 J0.0000 F20.00
N470 M5 M9
N475 M6 T19(TOOL Change .25" 45 deg)
N480 G43 H19
N485 G0 Z0.3000
N490 M3
N495 X0.3600
N500 Z0.0803
N505 G1 Z0.0700 F2.00
N510 G2 I-0.1800 J0.0000 F20.00
N515 G0 Z0.0803
N520 G1 Z0.0600 F2.00
N525 G2 I-0.1800 J0.0000 F20.00
N530 G0 Z0.0803
N535 G1 Z0.0500 F2.00
N540 G2 I-0.1800 J0.0000 F20.00
N545 G0 Z0.0803
N550 G1 Z0.0400 F2.00
N555 G2 I-0.1800 J0.0000 F20.00
N560 G0 Z0.0803
N565 G1 Z0.0300 F2.00
N570 G2 I-0.1800 J0.0000 F20.00
N575 G0 Z0.0803
N580 G1 Z0.0200 F2.00
N585 G2 I-0.1800 J0.0000 F20.00
N590 G0 Z0.0803
N595 G1 Z0.0100 F2.00
N600 G2 I-0.1800 J0.0000 F20.00
N605 G0 Z0.0803
N610 G1 Z0.0000 F2.00
N615 G2 I-0.1800 J0.0000 F20.00
N620 G0 Z0.0803
N625 G1 Z-0.0100 F2.00
N630 G2 I-0.1800 J0.0000 F20.00
N635 G0 Z0.0803
N640 G1 Z-0.0100 F2.00
N645 G2 I-0.1800 J0.0000 F20.00
N650 G0 Z0.3000
N655 M5
N660 M30