Radius correction for arcs stops the execution of the programm - DDCSV2.1 - Standalone CNC Motion Controller - Digital Dream Technology support
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Radius correction for arcs stops the execution of the programm

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71taa

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Posted at 2018-6-18 11:09:23 | Only Author |Only larger image Replies reward |Descending browser |Read mode
Last edited by 71taa In 2018-6-18 11:11 Editor

Hi,
Got a problem with tool radius compensation for arcs.
The situation is the following:
1. The file in attachement (tried other samples with arcs, changed arc definition from XYIJ to XYR - nothing changes)
2. Define any non-null radius correction for the tool 1 in the settings of the DDSCV (when the correction is 0 all works ok). Both positive/negative - it doesn't matter.
3. Start the programm.
As soon as the controller reaches the first arc it stops. The execution could be stopped with stop button, so it's not a complete hang up. Controller simply stays on this command does nothing (waited at least 5 minutes - no continuation).

Tried with both 91 and 92 builds for the DDSCV2.1. Tried both hardware and software arc alghorithms. All steps per mm for all axes are equal. Re-flashed with default settings and changed only steps per mm and entered radius correction - nothing works.

The height correction works, btw.
  1. (TOOL 1 - DIA 4.)


  4. G00 G90 G94 G17 G40 G80
  5. M06 T1 ()
  6. (F-contour1)
  7. S8000 M03
  8. G00 G54 G90 X-15.702 Y-12.5919
  9. G43 H1 D1 Z25.
  10. Z10.
  11. Z6.9
  12. G01 Z-1.1 F50.
  13. G41 X-15.7 F300.
  14. Y5.5919
  15. G02 X-15.0556 Y7.1475 I2.2 J0.
  16. G01 X-7.1475 Y15.0556
  17. G02 X-5.5919 Y15.7 I1.5556 J-1.5556
  18. G01 X5.5919
  19. G02 X7.1475 Y15.0556 I0. J-2.2
  20. G01 X15.0556 Y7.1475
  21. G02 X15.7 Y5.5919 I-1.5556 J-1.5556
  22. G01 Y-5.5919
  23. G02 X15.0556 Y-7.1475 I-2.2 J0.
  24. G01 X7.1475 Y-15.0556
  25. G02 X5.5919 Y-15.7 I-1.5556 J1.5556
  26. G01 X-5.5919
  27. G02 X-7.1475 Y-15.0556 I0. J2.2
  28. G01 X-21.4126 Y-0.7906
  29. G40 X-21.414 Y-0.792
  30. G00 Z10.
  31. X-15.702 Y-12.5919
  32. Z5.9
  33. G01 Z-2.1 F50.
  34. G41 X-15.7 F300.
  35. Y5.5919
  36. G02 X-15.0556 Y7.1475 I2.2 J0.
  37. G01 X-7.1475 Y15.0556
  38. G02 X-5.5919 Y15.7 I1.5556 J-1.5556
  39. G01 X5.5919
  40. G02 X7.1475 Y15.0556 I0. J-2.2
  41. G01 X15.0556 Y7.1475
  42. G02 X15.7 Y5.5919 I-1.5556 J-1.5556
  43. G01 Y-5.5919
  44. G02 X15.0556 Y-7.1475 I-2.2 J0.
  45. G01 X7.1475 Y-15.0556
  46. G02 X5.5919 Y-15.7 I-1.5556 J1.5556
  47. G01 X-5.5919
  48. G02 X-7.1475 Y-15.0556 I0. J2.2
  49. G01 X-21.4126 Y-0.7906
  50. G40 X-21.414 Y-0.792
  51. G00 Z10.
  52. X-15.702 Y-12.5919
  53. Z4.9
  54. G01 Z-3.1 F50.
  55. G41 X-15.7 F300.
  56. Y5.5919
  57. G02 X-15.0556 Y7.1475 I2.2 J0.
  58. G01 X-7.1475 Y15.0556
  59. G02 X-5.5919 Y15.7 I1.5556 J-1.5556
  60. G01 X5.5919
  61. G02 X7.1475 Y15.0556 I0. J-2.2
  62. G01 X15.0556 Y7.1475
  63. G02 X15.7 Y5.5919 I-1.5556 J-1.5556
  64. G01 Y-5.5919
  65. G02 X15.0556 Y-7.1475 I-2.2 J0.
  66. G01 X7.1475 Y-15.0556
  67. G02 X5.5919 Y-15.7 I-1.5556 J1.5556
  68. G01 X-5.5919
  69. G02 X-7.1475 Y-15.0556 I0. J2.2
  70. G01 X-21.4126 Y-0.7906
  71. G40 X-21.414 Y-0.792
  72. G00 Z10.
  73. X-15.702 Y-12.5919
  74. Z3.9
  75. G01 Z-4.1 F50.
  76. G41 X-15.7 F300.
  77. Y5.5919
  78. G02 X-15.0556 Y7.1475 I2.2 J0.
  79. G01 X-7.1475 Y15.0556
  80. G02 X-5.5919 Y15.7 I1.5556 J-1.5556
  81. G01 X5.5919
  82. G02 X7.1475 Y15.0556 I0. J-2.2
  83. G01 X15.0556 Y7.1475
  84. G02 X15.7 Y5.5919 I-1.5556 J-1.5556
  85. G01 Y-5.5919
  86. G02 X15.0556 Y-7.1475 I-2.2 J0.
  87. G01 X7.1475 Y-15.0556
  88. G02 X5.5919 Y-15.7 I-1.5556 J1.5556
  89. G01 X-5.5919
  90. G02 X-7.1475 Y-15.0556 I0. J2.2
  91. G01 X-21.4126 Y-0.7906
  92. G40 X-21.414 Y-0.792
  93. G00 Z10.
  94. X-15.702 Y-12.5919
  95. Z2.9
  96. G01 Z-5.1 F50.
  97. G41 X-15.7 F300.
  98. Y5.5919
  99. G02 X-15.0556 Y7.1475 I2.2 J0.
  100. G01 X-7.1475 Y15.0556
  101. G02 X-5.5919 Y15.7 I1.5556 J-1.5556
  102. G01 X5.5919
  103. G02 X7.1475 Y15.0556 I0. J-2.2
  104. G01 X15.0556 Y7.1475
  105. G02 X15.7 Y5.5919 I-1.5556 J-1.5556
  106. G01 Y-5.5919
  107. G02 X15.0556 Y-7.1475 I-2.2 J0.
  108. G01 X7.1475 Y-15.0556
  109. G02 X5.5919 Y-15.7 I-1.5556 J1.5556
  110. G01 X-5.5919
  111. G02 X-7.1475 Y-15.0556 I0. J2.2
  112. G01 X-21.4126 Y-0.7906
  113. G40 X-21.414 Y-0.792
  114. G00 Z10.
  115. X-15.702 Y-12.5919
  116. Z1.9
  117. G01 Z-6.1 F50.
  118. G41 X-15.7 F300.
  119. Y5.5919
  120. G02 X-15.0556 Y7.1475 I2.2 J0.
  121. G01 X-7.1475 Y15.0556
  122. G02 X-5.5919 Y15.7 I1.5556 J-1.5556
  123. G01 X5.5919
  124. G02 X7.1475 Y15.0556 I0. J-2.2
  125. G01 X15.0556 Y7.1475
  126. G02 X15.7 Y5.5919 I-1.5556 J-1.5556
  127. G01 Y-5.5919
  128. G02 X15.0556 Y-7.1475 I-2.2 J0.
  129. G01 X7.1475 Y-15.0556
  130. G02 X5.5919 Y-15.7 I-1.5556 J1.5556
  131. G01 X-5.5919
  132. G02 X-7.1475 Y-15.0556 I0. J2.2
  133. G01 X-21.4126 Y-0.7906
  134. G40 X-21.414 Y-0.792
  135. G00 Z10.
  136. X-15.502 Y-12.5919
  137. Z6.9
  138. G01 Z-6.1 F50.
  139. G41 X-15.5 F200.
  140. Y5.5919
  141. G02 X-14.9142 Y7.0061 I2. J0.
  142. G01 X-7.0061 Y14.9142
  143. G02 X-5.5919 Y15.5 I1.4142 J-1.4142
  144. G01 X5.5919
  145. G02 X7.0061 Y14.9142 I0. J-2.
  146. G01 X14.9142 Y7.0061
  147. G02 X15.5 Y5.5919 I-1.4142 J-1.4142
  148. G01 Y-5.5919
  149. G02 X14.9142 Y-7.0061 I-2. J0.
  150. G01 X7.0061 Y-14.9142
  151. G02 X5.5919 Y-15.5 I-1.4142 J1.4142
  152. G01 X-5.5919
  153. G02 X-7.0061 Y-14.9142 I0. J2.
  154. G01 X-21.2712 Y-0.6491
  155. G40 X-21.2726 Y-0.6506
  156. G00 Z10.
  157. X-15.502 Y-12.5919
  158. Z0.9
  159. G01 Z-6.1 F50.
  160. G41 X-15.5 F200.
  161. Y5.5919
  162. G02 X-14.9142 Y7.0061 I2. J0.
  163. G01 X-7.0061 Y14.9142
  164. G02 X-5.5919 Y15.5 I1.4142 J-1.4142
  165. G01 X5.5919
  166. G02 X7.0061 Y14.9142 I0. J-2.
  167. G01 X14.9142 Y7.0061
  168. G02 X15.5 Y5.5919 I-1.4142 J-1.4142
  169. G01 Y-5.5919
  170. G02 X14.9142 Y-7.0061 I-2. J0.
  171. G01 X7.0061 Y-14.9142
  172. G02 X5.5919 Y-15.5 I-1.4142 J1.4142
  173. G01 X-5.5919
  174. G02 X-7.0061 Y-14.9142 I0. J2.
  175. G01 X-21.2712 Y-0.6491
  176. G40 X-21.2726 Y-0.6506
  177. G00 Z10.
  178. X-15.502 Y-12.5919
  179. Z0.9
  180. G01 Z-6.1 F50.
  181. G41 X-15.5 F200.
  182. Y5.5919
  183. G02 X-14.9142 Y7.0061 I2. J0.
  184. G01 X-7.0061 Y14.9142
  185. G02 X-5.5919 Y15.5 I1.4142 J-1.4142
  186. G01 X5.5919
  187. G02 X7.0061 Y14.9142 I0. J-2.
  188. G01 X14.9142 Y7.0061
  189. G02 X15.5 Y5.5919 I-1.4142 J-1.4142
  190. G01 Y-5.5919
  191. G02 X14.9142 Y-7.0061 I-2. J0.
  192. G01 X7.0061 Y-14.9142
  193. G02 X5.5919 Y-15.5 I-1.4142 J1.4142
  194. G01 X-5.5919
  195. G02 X-7.0061 Y-14.9142 I0. J2.
  196. G01 X-21.2712 Y-0.6491
  197. G40 X-21.2726 Y-0.6506
  198. G00 Z10.
  199. M05
  200. G00 G28 G91 Z0
  201. G00 G28 G91 X-15.0 Y0.
  202. G90
  203. M30
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Sofa
Posted at 2018-7-4 07:22:54 | Only Author
How large of an offset are you trying to use?

I asked because the program above shows the G41 being turn on with a move of only .002.  Most controllers need a move longer than the comp being applied.

Not saying this is the problem, just trying to help you troubleshoot.

Rob
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71taa

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 Author| Posted at 2018-7-5 12:28:06 | Only Author
PPRINT Posted at 2018-7-4 07:22
How large of an offset are you trying to use?

I asked because the program above shows the G41 being ...

Hi, Rob

Thanks for the suggestion, I'll try to re-test it in the nearest future with larger moves and smaller comps.

For this one I've tried +0.001mm compensation earlier with same result.
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Posted at 2018-7-5 14:23:22 | Only Author
I replace in line number 8,31,52.....etc the value of "X-15.702" to "X-20" and controller starts working correctly!
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 Author| Posted at 2018-7-6 11:32:00 | Only Author
alexwalex Posted at 2018-7-5 14:23
I replace in line number 8,31,52.....etc the value of "X-15.702" to "X-20" and controller starts wor ...

Still hangs in my case. What correction have you entered for the tool in controller settings?
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Posted at 2018-7-6 16:39:39 | Only Author
71taa Posted at 2018-7-6 11:32
Still hangs in my case. What correction have you entered for the tool in controller settings?

I run your programm with parameter (284) D1=0 - it works.
Then i set D1=3 (for endmill diameter 6mm) - controller hangs.
Then i replaced in strings 8,31,52,73,94,115,136,157,178 value X to X-20 and controller works correctly with parameter D1=3.
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Posted at 2018-7-21 03:36:35 | Only Author
Last edited by alexwalex In 2018-7-21 03:44 Editor

Hi, ytliu !
Got a problem with tool radius compensation:
If i define any nonzero value for the tool 1 radius in the settings of the DDSCV (parameter 284) - this and similar programm not work.

wheel.zip

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Posted at 2018-7-21 16:31:13 | Only Author
alexwalex Posted at 2018-7-21 03:36
Hi, ytliu !
Got a problem with tool radius compensation:
If i define any nonzero value for the tool  ...

Hi, alexwalex!
I am very sorry, due to the loss of precision caused by the internal data conversion of the DDCVS system, the system has serious problems with the radius compensation support. It is recommended that you directly generate the compensated program through post-processing.
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Posted at 2018-7-22 01:51:10 | Only Author
OK, understood. Thanks for the answer. I can hope to fix this problem in the future?
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Posted at 2018-7-22 07:21:01 | Only Author
Last edited by ytliu In 2018-7-22 07:30 Editor
alexwalex Posted at 2018-7-22 01:51
OK, understood. Thanks for the answer. I can hope to fix this problem in the future?

Hi,alexwalex!
We already know the reason why the tool path with arc command under the DDCSV system has a radius compensation problem. In our new controller, we solved this problem by redesigning the tool path parse engine. However, due to the heavy workload of porting the new engine to the DDCSV system, I am very sorry that this may take a long time.

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BMP1.png
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