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Author Topic: mill, on Final pass making a circle bit tries to reverse into stock. help!  (Read 2519 times)

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On my final pass making a hole 1.370 in dia, .500 deep, bit starts to run backwards and takes out a .030 gouge out of the side.
Running mach3 taig mill. help!

Here is the last bit of g-code:

N2290 G03 X7.2625 Y-2.1893 I0.0088 J0.075
N2295 X7.1443 Y-2.2892 I-0.2583 J0.1856
N2300 G02 X7.2171 Y-2.2806 I0.0487 J-0.0992
N2305 G03 X7.2869 Y-2.2583 I0.0159 J0.0709
N2310 X7.1717 Y-2.3452 I-0.2827 J0.2547
N2315 G02 X7.2427 Y-2.3392 I0.0433 J-0.0882
N2320 G03 X7.3119 Y-2.3222 I0.02 J0.0679
N2325 X7.1992 Y-2.4013 I-0.3078 J0.3186
N2330 G02 X7.269 Y-2.397 I0.0401 J-0.0817
N2335 G03 X7.3375 Y-2.3835 I0.0227 J0.0658
N2340 X7.2267 Y-2.4574 I-0.3333 J0.3799
N2345 G02 X7.2955 Y-2.4543 I0.0379 J-0.0774
N2350 G03 X7.3635 Y-2.4433 I0.0245 J0.0641
N2355 X7.3635 Y-2.4433 I-0.3593 J0.4397
N2360 G00 Z1.0
(=============================================)
(====== Tool No 2 = 3/16 flat end mill 2 flu-finish)
(====== Tool No 2  diam. = 0.1875)
(..... Segment = SIDE1)
(..... Operation = FINISH SIDE)
(=============================================)
N2395 T2 M6
N2400 G43 H2 Z1.0
N2405 S2500 M08
N2410G00 X7.3635 Y-2.4433 Z1.0 F1.8
N2415 Z0.1
N2420 G01 Z-0.5 F1.8
N2425 G41 X7.4127 Y-2.5346 F3.6 D02
N2430 G03 X7.4777 Y-2.4986 I-0.0355 J0.1409 F1.8
N2435 X7.4777 Y-2.4986 I-0.4735 J0.495 F3.11
N2440 X7.5542 Y-2.4119 I-0.4735 J0.495
N2445 X7.5818 Y-2.3429 I-0.1167 J0.0866 F1.8
N2450 G01 G40 X7.4851 Y-2.3054 F3.6
N2455 G00 Z1.0
N2460 G91 Z0 M09
N2465 G40 G49 G17 G80 G61 G70 G90 (Inch mode & Exact Stop)
N2470 M91001
N2475 M30
(----------------------------------------------------------------------)
(------------------------------ E N D -----------------------------)
(----------------------------------------------------------------------)
%

If anyone could help I would appreciate it.

Offline Graham Waterworth

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Have you got the tool offset table set correctly?

The last bit of gode is using a G41 so tool offsets are been used, tool 2 in the offset table must have the tool dia entered.

Graham.
Without engineers the world stops