Why on my lathe G61 does not work on circles?
25 Jan 2017 04:01 - 25 Jan 2017 04:03 #86591
by pkasy
Why on my lathe G61 does not work on circles? was created by pkasy
Hello everybody!
Why on my lathe G61 does not work on circles?
Here's a picture of it.
Draws correctly and in the program indicated G61 and even G61.1.
But there is a straight line from start point to end point.
Here is a code:
N298 G3 X--56.794 Z[-2.843-0.2] R129.474
The R(radius in mm) is not so much to be a line, right?
As you can see, the white color shows the desired path, and red that happened. 2 times. This I rechecked.
I have a simple question - why?
Why on my lathe G61 does not work on circles?
Here's a picture of it.
Draws correctly and in the program indicated G61 and even G61.1.
But there is a straight line from start point to end point.
Here is a code:
N298 G3 X--56.794 Z[-2.843-0.2] R129.474
The R(radius in mm) is not so much to be a line, right?
As you can see, the white color shows the desired path, and red that happened. 2 times. This I rechecked.
I have a simple question - why?
Last edit: 25 Jan 2017 04:03 by pkasy.
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25 Jan 2017 13:39 #86612
by andypugh
Replied by andypugh on topic Why on my lathe G61 does not work on circles?
Can you show us all the G-code?
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25 Jan 2017 16:25 #86637
by pkasy
Replied by pkasy on topic Why on my lathe G61 does not work on circles?
sure
Warning: Spoiler!
G61
N6 M5
N8 M6 T01 G43
N10 G96 G0 X--64 Z3 M3 S150 D2250
N12 ()
N14 (-----------------)
N16 (TR-CONTOUR - TURN)
N18 (-----------------)
N20 G95
N22 X--64 Z3
N24 X--59.2
N26 G1 Z-13.192 F0.1 M8
N28 X--59.602 Z-12.992
N30 G0 Z3
N32 X--57.2
N34 G1 Z-2.953
N36 X--57.6 Z-2.753
N38 G0 Z3
N40 X--55.2
N42 G1 Z-2.732
N44 X--55.6 Z-2.532
N46 G0 Z3
N48 X--53.2
N50 G1 Z-2.52
N52 X--53.6 Z-2.32
N54 G0 Z3
N56 X--51.2
N58 G1 Z-2.316
N60 X--51.6 Z-2.116
N62 G0 Z3
N64 X--49.2
N66 G1 Z-2.12
N68 X--49.6 Z-1.92
N70 G0 Z3
N72 X--47.2
N74 G1 Z-1.932
N76 X--47.6 Z-1.732
N78 G0 Z3
N80 X--45.2
N82 G1 Z-1.752
N84 X--45.6 Z-1.552
N86 G0 Z3
N88 X--43.2
N90 G1 Z-1.581
N92 X--43.6 Z-1.381
N94 G0 Z3
N96 X--41.2
N98 G1 Z-1.417
N100 X--41.6 Z-1.217
N102 G0 Z3
N104 X--39.2
N106 G1 Z-1.262
N108 X--39.6 Z-1.062
N110 G0 Z3
N112 X--37.2
N114 G1 Z-1.114
N116 X--37.6 Z-0.914
N118 G0 Z3
N120 X--35.2
N122 G1 Z-0.974
N124 X--35.6 Z-0.774
N126 G0 Z3
N128 X--33.2
N130 G1 Z-0.843
N132 X--33.6 Z-0.643
N134 G0 Z3
N136 X--31.2
N138 G1 Z-0.719
N140 X--31.6 Z-0.519
N142 G0 Z3
N144 X--29.2
N146 G1 Z-0.603
N148 X--29.6 Z-0.403
N150 G0 Z3
N152 X--27.2
N154 G1 Z-0.495
N156 X--27.6 Z-0.295
N158 G0 Z3
N160 X--25.2
N162 G1 Z-0.395
N164 X--25.6 Z-0.195
N166 G0 Z3
N168 X--23.2
N170 G1 Z-0.303
N172 X--23.6 Z-0.103
N174 G0 Z3
N176 X--21.2
N178 G1 Z-0.218
N180 X--21.6 Z-0.018
N182 G0 Z3
N184 X--19.2
N186 G1 Z-0.142
N188 X--19.6 Z0.058
N190 G0 Z3
N192 X--17.2
N194 G1 Z-0.073
N196 X--17.6 Z0.127
N198 G0 Z3
N200 X--15.2
N202 G1 Z-0.012
N204 X--15.6 Z0.188
N206 G0 Z3
N208 X--13.2
N210 G1 Z0.042
N212 X--13.6 Z0.242
N214 G0 Z3
N216 X--11.2
N218 G1 Z0.087
N220 X--11.6 Z0.287
N222 G0 Z3
N224 X--9.2
N226 G1 Z0.125
N228 X--9.6 Z0.325
N230 G0 Z3
N232 X--7.2
N234 G1 Z0.155
N236 X--7.6 Z0.355
N238 G0 Z3
N240 X--5.2
N242 G1 Z0.178
N244 X--5.6 Z0.378
N246 G0 Z3
N248 X--3.2
N250 G1 Z0.192
N252 X--3.6 Z0.392
N254 G0 Z3
N256 X--1.2
N258 G1 Z0.199
N260 X--1.6 Z0.399
N262 G0 Z3
N264 X-0.798
N266 G1 Z0.2
N268 X-0.4 Z0.4
N270 G0 X-0.8
N272 G1 Z0.267 F0.05
N274 Z0.1
N276 X-0.196
N278 G3 X--57.394 Z[-2.743-0.3] R129.474
N280 G1 X--57.718 Z-3.18
N282 X--58.6 Z-3.885
N284 Z-13.292
N286 X--64
N288 G0 Z2.1
N290 X-0.8
N292 G1 Z0.1 F0.05
N294 Z0
N296 X-0.796
N298 G3 X--56.794 Z[-2.843-0.2] R129.474
N300 G1 X--57.118 Z-3.28
N302 X--58 Z-3.985
N304 Z-13.392
N306 X--64
N308 G0 Z2
M5
N312 M02
%
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25 Jan 2017 17:35 #86642
by andypugh
Replied by andypugh on topic Why on my lathe G61 does not work on circles?
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25 Jan 2017 22:57 - 25 Jan 2017 23:14 #86656
by pkasy
Replied by pkasy on topic Why on my lathe G61 does not work on circles?
Last edit: 25 Jan 2017 23:14 by pkasy.
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25 Jan 2017 23:48 #86664
by andypugh
Replied by andypugh on topic Why on my lathe G61 does not work on circles?
Do they show up in active G-codes in the MDI tab of Axis?
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26 Jan 2017 01:17 - 26 Jan 2017 01:32 #86670
by pkasy
Replied by pkasy on topic Why on my lathe G61 does not work on circles?
Yes.
Usually arcs work fine. But not this time.
Usually arcs work fine. But not this time.
Last edit: 26 Jan 2017 01:32 by pkasy.
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26 Jan 2017 01:35 #86674
by andypugh
Replied by andypugh on topic Why on my lathe G61 does not work on circles?
I am rather puzzled, then, to be honest.
But, I can't reproduce the problem here.
Perhaps a feature of your machine settings?
What version of LinuxCNC are you using?
But, I can't reproduce the problem here.
Perhaps a feature of your machine settings?
What version of LinuxCNC are you using?
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26 Jan 2017 02:21 - 26 Jan 2017 02:24 #86678
by pkasy
Replied by pkasy on topic Why on my lathe G61 does not work on circles?
2.7.8
It draws correctly, but performs incorrectly.
It draws correctly, but performs incorrectly.
Last edit: 26 Jan 2017 02:24 by pkasy.
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26 Jan 2017 07:29 - 26 Jan 2017 07:31 #86690
by pkasy
Replied by pkasy on topic Why on my lathe G61 does not work on circles?
I ran the program several times and that's what I saw.
after the first run of program, G18 changes to G17.
and the second run is going incorrect, but the graphics is correct, because the program does not reloaded.
It is a mistake in the Axis.
after the first run of program, G18 changes to G17.
and the second run is going incorrect, but the graphics is correct, because the program does not reloaded.
It is a mistake in the Axis.
Last edit: 26 Jan 2017 07:31 by pkasy.
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