├── .gitignore ├── LICENSE ├── README.md └── grbl_post.py /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | build/ 12 | develop-eggs/ 13 | dist/ 14 | downloads/ 15 | eggs/ 16 | .eggs/ 17 | lib/ 18 | lib64/ 19 | parts/ 20 | sdist/ 21 | var/ 22 | wheels/ 23 | *.egg-info/ 24 | .installed.cfg 25 | *.egg 26 | MANIFEST 27 | 28 | # PyInstaller 29 | # Usually these files are written by a python script from a template 30 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 31 | *.manifest 32 | *.spec 33 | 34 | # Installer logs 35 | pip-log.txt 36 | pip-delete-this-directory.txt 37 | 38 | # Unit test / coverage reports 39 | htmlcov/ 40 | .tox/ 41 | .coverage 42 | .coverage.* 43 | .cache 44 | nosetests.xml 45 | coverage.xml 46 | *.cover 47 | .hypothesis/ 48 | .pytest_cache/ 49 | 50 | # Translations 51 | *.mo 52 | *.pot 53 | 54 | # Django stuff: 55 | *.log 56 | local_settings.py 57 | db.sqlite3 58 | 59 | # Flask stuff: 60 | instance/ 61 | .webassets-cache 62 | 63 | # Scrapy stuff: 64 | .scrapy 65 | 66 | # Sphinx documentation 67 | docs/_build/ 68 | 69 | # PyBuilder 70 | target/ 71 | 72 | # Jupyter Notebook 73 | .ipynb_checkpoints 74 | 75 | # pyenv 76 | .python-version 77 | 78 | # celery beat schedule file 79 | celerybeat-schedule 80 | 81 | # SageMath parsed files 82 | *.sage.py 83 | 84 | # Environments 85 | .env 86 | .venv 87 | env/ 88 | venv/ 89 | ENV/ 90 | env.bak/ 91 | venv.bak/ 92 | 93 | # Spyder project settings 94 | .spyderproject 95 | .spyproject 96 | 97 | # Rope project settings 98 | .ropeproject 99 | 100 | # mkdocs documentation 101 | /site 102 | 103 | # mypy 104 | .mypy_cache/ 105 | grbl_G81_post_old.py 106 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU LESSER GENERAL PUBLIC LICENSE 2 | Version 2.1, February 1999 3 | 4 | Copyright (C) 1991, 1999 Free Software Foundation, Inc. 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | [This is the first released version of the Lesser GPL. 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grbl_post

2 | 3 | ## FreeCAD Path post processor for Grbl, development version. 4 | *** 5 | Since jun, 13 2019, the grbl_G81_post.py have replaced the old grbl post processor in the main FreeCAD repository. So it have been renamed to grbl_post.py. 6 | *** 7 | Warning ! This is my development and testing version... This version is not necessarily up to date with the production version supplied with the FreeCAD software. 8 | *** 9 | Drilling cycles (G81, G82 & G83) conversions to G0/G1 moves : 10 | Because of Grbl limits (see https://github.com/gnea/grbl/wiki#limitations-by-design), and that not all GCode sender program can do the translation, I added to the standard FreeCAD grbl post processor the ability to translate gCodes between G81, G82 & G83 to the G0, G1 & G4 corresponding moves & pause. 11 | 12 | grbl_post.py has 2 options for drilling cycle conversion : 13 | `--translate_drill`: translate drill cycles G81, G82 & G83 in G0/G1 movements 14 | `--no-translate_drill`: don't translate drill cycles G81, G82 & G83 in G0/G1 movements (default) 15 | The default option have been changed between grbl_G81_post.py and grbl_post.py in order not to modify the behavior of older models that used the old post processor. 16 | *** 17 | Install of post processor development version for using in the FreeCAD Path module: 18 | 19 | - Personal install : 20 | Copy **grbl_post.py** to **grbl_dev_post.py** in your user macro directory, then select the grbl_dev post processor in your Path job. 21 | -------------------------------------------------------------------------------- /grbl_post.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # *************************************************************************** 3 | # * Copyright (c) 2014 sliptonic * 4 | # * Copyright (c) 2018, 2019 Gauthier Briere * 5 | # * Copyright (c) 2019, 2020 Schildkroet * 6 | # * * 7 | # * This file is part of the FreeCAD CAx development system. * 8 | # * * 9 | # * This program is free software; you can redistribute it and/or modify * 10 | # * it under the terms of the GNU Lesser General Public License (LGPL) * 11 | # * as published by the Free Software Foundation; either version 2 of * 12 | # * the License, or (at your option) any later version. * 13 | # * for detail see the LICENCE text file. * 14 | # * * 15 | # * FreeCAD is distributed in the hope that it will be useful, * 16 | # * but WITHOUT ANY WARRANTY; without even the implied warranty of * 17 | # * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 18 | # * GNU Lesser General Public License for more details. * 19 | # * * 20 | # * You should have received a copy of the GNU Library General Public * 21 | # * License along with FreeCAD; if not, write to the Free Software * 22 | # * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * 23 | # * USA * 24 | # * * 25 | # *************************************************************************** 26 | 27 | import FreeCAD 28 | from FreeCAD import Units 29 | import PathScripts.PostUtils as PostUtils 30 | import argparse 31 | import datetime 32 | import shlex 33 | import PathScripts.PathUtil as PathUtil 34 | 35 | 36 | TOOLTIP = ''' 37 | Generate g-code from a Path that is compatible with the grbl controller. 38 | import grbl_post 39 | grbl_post.export(object, "/path/to/file.ncc") 40 | ''' 41 | 42 | 43 | # *************************************************************************** 44 | # * Globals set customization preferences 45 | # *************************************************************************** 46 | 47 | # Default values for command line arguments: 48 | OUTPUT_COMMENTS = True # default output of comments in output gCode file 49 | OUTPUT_HEADER = True # default output header in output gCode file 50 | OUTPUT_LINE_NUMBERS = False # default doesn't output line numbers in output gCode file 51 | OUTPUT_BCNC = False # default doesn't add bCNC operation block headers in output gCode file 52 | SHOW_EDITOR = True # default show the resulting file dialog output in GUI 53 | PRECISION = 3 # Default precision for metric (see http://linuxcnc.org/docs/2.7/html/gcode/overview.html#_g_code_best_practices) 54 | TRANSLATE_DRILL_CYCLES = False # If true, G81, G82 & G83 are translated in G0/G1 moves 55 | PREAMBLE = '''G17 G90 56 | ''' # default preamble text will appear at the beginning of the gCode output file. 57 | POSTAMBLE = '''M5 58 | G17 G90 59 | M2 60 | ''' # default postamble text will appear following the last operation. 61 | 62 | SPINDLE_WAIT = 0 # no waiting after M3 / M4 by default 63 | RETURN_TO = None # no movements after end of program 64 | 65 | # Customisation with no command line argument 66 | MODAL = False # if true commands are suppressed if the same as previous line. 67 | LINENR = 100 # line number starting value 68 | LINEINCR = 10 # line number increment 69 | OUTPUT_TOOL_CHANGE = False # default don't output M6 tool changes (comment it) as grbl currently does not handle it 70 | DRILL_RETRACT_MODE = 'G98' # Default value of drill retractations (CURRENT_Z) other possible value is G99 71 | MOTION_MODE = 'G90' # G90 for absolute moves, G91 for relative 72 | UNITS = 'G21' # G21 for metric, G20 for us standard 73 | UNIT_FORMAT = 'mm' 74 | UNIT_SPEED_FORMAT = 'mm/min' 75 | PRE_OPERATION = '''''' # Pre operation text will be inserted before every operation 76 | POST_OPERATION = '''''' # Post operation text will be inserted after every operation 77 | TOOL_CHANGE = '''''' # Tool Change commands will be inserted before a tool change 78 | 79 | # *************************************************************************** 80 | # * End of customization 81 | # *************************************************************************** 82 | 83 | # Parser arguments list & definition 84 | parser = argparse.ArgumentParser(prog='grbl', add_help=False) 85 | parser.add_argument('--comments', action='store_true', help='output comment (default)') 86 | parser.add_argument('--no-comments', action='store_true', help='suppress comment output') 87 | parser.add_argument('--header', action='store_true', help='output headers (default)') 88 | parser.add_argument('--no-header', action='store_true', help='suppress header output') 89 | parser.add_argument('--line-numbers', action='store_true', help='prefix with line numbers') 90 | parser.add_argument('--no-line-numbers', action='store_true', help='don\'t prefix with line numbers (default)') 91 | parser.add_argument('--show-editor', action='store_true', help='pop up editor before writing output (default)') 92 | parser.add_argument('--no-show-editor', action='store_true', help='don\'t pop up editor before writing output') 93 | parser.add_argument('--precision', default='3', help='number of digits of precision, default=3') 94 | parser.add_argument('--translate_drill', action='store_true', help='translate drill cycles G81, G82 & G83 in G0/G1 movements') 95 | parser.add_argument('--no-translate_drill', action='store_true', help='don\'t translate drill cycles G81, G82 & G83 in G0/G1 movements (default)') 96 | parser.add_argument('--preamble', help='set commands to be issued before the first command, default="G17 G90"') 97 | parser.add_argument('--postamble', help='set commands to be issued after the last command, default="M5\nG17 G90\n;M2"') 98 | parser.add_argument('--inches', action='store_true', help='Convert output for US imperial mode (G20)') 99 | parser.add_argument('--tool-change', action='store_true', help='Insert M6 for all tool changes') 100 | parser.add_argument('--wait-for-spindle', type=int, default=0, help='Wait for spindle to reach desired speed after M3 / M4, default=0') 101 | parser.add_argument('--return-to', default='', help='Move to the specified coordinates at the end, e.g. --return-to=0,0') 102 | parser.add_argument('--bcnc', action='store_true', help='Add Job operations as bCNC block headers. Consider suppressing existing comments: Add argument --no-comments') 103 | parser.add_argument('--no-bcnc', action='store_true', help='suppress bCNC block header output (default)') 104 | TOOLTIP_ARGS = parser.format_help() 105 | 106 | 107 | # *************************************************************************** 108 | # * Internal global variables 109 | # *************************************************************************** 110 | MOTION_COMMANDS = ['G0', 'G00', 'G1', 'G01', 'G2', 'G02', 'G3', 'G03'] # Motion gCode commands definition 111 | RAPID_MOVES = ['G0', 'G00'] # Rapid moves gCode commands definition 112 | SUPPRESS_COMMANDS = [] # These commands are ignored by commenting them out 113 | COMMAND_SPACE = " " 114 | # Global variables storing current position 115 | CURRENT_X = 0 116 | CURRENT_Y = 0 117 | CURRENT_Z = 0 118 | 119 | 120 | # *************************************************************************** 121 | # * to distinguish python built-in open function from the one declared below 122 | if open.__module__ in ['__builtin__', 'io']: 123 | pythonopen = open 124 | 125 | 126 | def processArguments(argstring): 127 | 128 | global OUTPUT_HEADER 129 | global OUTPUT_COMMENTS 130 | global OUTPUT_LINE_NUMBERS 131 | global SHOW_EDITOR 132 | global PRECISION 133 | global PREAMBLE 134 | global POSTAMBLE 135 | global UNITS 136 | global UNIT_SPEED_FORMAT 137 | global UNIT_FORMAT 138 | global TRANSLATE_DRILL_CYCLES 139 | global OUTPUT_TOOL_CHANGE 140 | global SPINDLE_WAIT 141 | global RETURN_TO 142 | global OUTPUT_BCNC 143 | 144 | try: 145 | args = parser.parse_args(shlex.split(argstring)) 146 | if args.no_header: 147 | OUTPUT_HEADER = False 148 | if args.header: 149 | OUTPUT_HEADER = True 150 | if args.no_comments: 151 | OUTPUT_COMMENTS = False 152 | if args.comments: 153 | OUTPUT_COMMENTS = True 154 | if args.no_line_numbers: 155 | OUTPUT_LINE_NUMBERS = False 156 | if args.line_numbers: 157 | OUTPUT_LINE_NUMBERS = True 158 | if args.no_show_editor: 159 | SHOW_EDITOR = False 160 | if args.show_editor: 161 | SHOW_EDITOR = True 162 | PRECISION = args.precision 163 | if args.preamble is not None: 164 | PREAMBLE = args.preamble 165 | if args.postamble is not None: 166 | POSTAMBLE = args.postamble 167 | if args.no_translate_drill: 168 | TRANSLATE_DRILL_CYCLES = False 169 | if args.translate_drill: 170 | TRANSLATE_DRILL_CYCLES = True 171 | if args.inches: 172 | UNITS = 'G20' 173 | UNIT_SPEED_FORMAT = 'in/min' 174 | UNIT_FORMAT = 'in' 175 | PRECISION = 4 176 | if args.tool_change: 177 | OUTPUT_TOOL_CHANGE = True 178 | if args.wait_for_spindle > 0: 179 | SPINDLE_WAIT = args.wait_for_spindle 180 | if args.return_to != '': 181 | RETURN_TO = [int(v) for v in args.return_to.split(',')] 182 | if len(RETURN_TO) != 2: 183 | RETURN_TO = None 184 | print("--return-to coordinates must be specified as ,, ignoring") 185 | if args.bcnc: 186 | OUTPUT_BCNC = True 187 | if args.no_bcnc: 188 | OUTPUT_BCNC = False 189 | 190 | 191 | except Exception as e: 192 | return False 193 | 194 | return True 195 | 196 | 197 | # For debug... 198 | def dump(obj): 199 | for attr in dir(obj): 200 | print("obj.%s = %s" % (attr, getattr(obj, attr))) 201 | 202 | 203 | def export(objectslist, filename, argstring): 204 | 205 | if not processArguments(argstring): 206 | return None 207 | 208 | global UNITS 209 | global UNIT_FORMAT 210 | global UNIT_SPEED_FORMAT 211 | global MOTION_MODE 212 | global SUPPRESS_COMMANDS 213 | 214 | print("Post Processor: " + __name__ + " postprocessing...") 215 | gcode = "" 216 | 217 | # write header 218 | if OUTPUT_HEADER: 219 | gcode += linenumber() + "(Exported by FreeCAD)\n" 220 | gcode += linenumber() + "(Post Processor: " + __name__ + ")\n" 221 | gcode += linenumber() + "(Output Time:" + str(datetime.datetime.now()) + ")\n" 222 | 223 | # Check canned cycles for drilling 224 | if TRANSLATE_DRILL_CYCLES: 225 | if len(SUPPRESS_COMMANDS) == 0: 226 | SUPPRESS_COMMANDS = ['G99', 'G98', 'G80'] 227 | else: 228 | SUPPRESS_COMMANDS += ['G99', 'G98', 'G80'] 229 | 230 | # Write the preamble 231 | if OUTPUT_COMMENTS: 232 | gcode += linenumber() + "(Begin preamble)\n" 233 | for line in PREAMBLE.splitlines(True): 234 | gcode += linenumber() + line 235 | # verify if PREAMBLE have changed MOTION_MODE or UNITS 236 | if 'G90' in PREAMBLE: 237 | MOTION_MODE = 'G90' 238 | elif 'G91' in PREAMBLE: 239 | MOTION_MODE = 'G91' 240 | else: 241 | gcode += linenumber() + MOTION_MODE + "\n" 242 | if 'G21' in PREAMBLE: 243 | UNITS = 'G21' 244 | UNIT_FORMAT = 'mm' 245 | UNIT_SPEED_FORMAT = 'mm/min' 246 | elif 'G20' in PREAMBLE: 247 | UNITS = 'G20' 248 | UNIT_FORMAT = 'in' 249 | UNIT_SPEED_FORMAT = 'in/min' 250 | else: 251 | gcode += linenumber() + UNITS + "\n" 252 | 253 | for obj in objectslist: 254 | # Debug... 255 | # print("\n" + "*"*70) 256 | # dump(obj) 257 | # print("*"*70 + "\n") 258 | if not hasattr(obj, "Path"): 259 | print("The object " + obj.Name + " is not a path. Please select only path and Compounds.") 260 | return 261 | 262 | # Skip inactive operations 263 | if PathUtil.opProperty(obj, 'Active') is False: 264 | continue 265 | 266 | # do the pre_op 267 | if OUTPUT_BCNC: 268 | gcode += linenumber() + "(Block-name: " + obj.Label + ")\n" 269 | gcode += linenumber() + "(Block-expand: 0)\n" 270 | gcode += linenumber() + "(Block-enable: 1)\n" 271 | if OUTPUT_COMMENTS: 272 | gcode += linenumber() + "(Begin operation: " + obj.Label + ")\n" 273 | for line in PRE_OPERATION.splitlines(True): 274 | gcode += linenumber() + line 275 | 276 | # get coolant mode 277 | coolantMode = 'None' 278 | if hasattr(obj, "CoolantMode") or hasattr(obj, 'Base') and hasattr(obj.Base, "CoolantMode"): 279 | if hasattr(obj, "CoolantMode"): 280 | coolantMode = obj.CoolantMode 281 | else: 282 | coolantMode = obj.Base.CoolantMode 283 | 284 | # turn coolant on if required 285 | if OUTPUT_COMMENTS: 286 | if not coolantMode == 'None': 287 | gcode += linenumber() + '(Coolant On:' + coolantMode + ')\n' 288 | if coolantMode == 'Flood': 289 | gcode += linenumber() + 'M8' + '\n' 290 | if coolantMode == 'Mist': 291 | gcode += linenumber() + 'M7' + '\n' 292 | 293 | # Parse the op 294 | gcode += parse(obj) 295 | 296 | # do the post_op 297 | if OUTPUT_COMMENTS: 298 | gcode += linenumber() + "(Finish operation: " + obj.Label + ")\n" 299 | for line in POST_OPERATION.splitlines(True): 300 | gcode += linenumber() + line 301 | 302 | # turn coolant off if required 303 | if not coolantMode == 'None': 304 | if OUTPUT_COMMENTS: 305 | gcode += linenumber() + '(Coolant Off:' + coolantMode + ')\n' 306 | gcode += linenumber() +'M9' + '\n' 307 | 308 | # do the post_amble 309 | if OUTPUT_BCNC: 310 | gcode += linenumber() + "(Block-name: post_amble)\n" 311 | gcode += linenumber() + "(Block-expand: 0)\n" 312 | gcode += linenumber() + "(Block-enable: 1)\n" 313 | if OUTPUT_COMMENTS: 314 | gcode += linenumber() + "(Begin postamble)\n" 315 | for line in POSTAMBLE.splitlines(True): 316 | gcode += linenumber() + line 317 | 318 | if RETURN_TO: 319 | gcode += linenumber() + "G0 X%s Y%s" % tuple(RETURN_TO) 320 | 321 | # show the gCode result dialog 322 | if FreeCAD.GuiUp and SHOW_EDITOR: 323 | dia = PostUtils.GCodeEditorDialog() 324 | dia.editor.setText(gcode) 325 | result = dia.exec_() 326 | if result: 327 | final = dia.editor.toPlainText() 328 | else: 329 | final = gcode 330 | else: 331 | final = gcode 332 | 333 | print("Done postprocessing.") 334 | 335 | # write the file 336 | gfile = pythonopen(filename, "w") 337 | gfile.write(final) 338 | gfile.close() 339 | 340 | 341 | def linenumber(): 342 | if not OUTPUT_LINE_NUMBERS: 343 | return "" 344 | global LINENR 345 | global LINEINCR 346 | s = "N" + str(LINENR) + " " 347 | LINENR += LINEINCR 348 | return s 349 | 350 | 351 | def format_outstring(strTable): 352 | global COMMAND_SPACE 353 | # construct the line for the final output 354 | s = "" 355 | for w in strTable: 356 | s += w + COMMAND_SPACE 357 | s = s.strip() 358 | return s 359 | 360 | 361 | def parse(pathobj): 362 | 363 | global DRILL_RETRACT_MODE 364 | global MOTION_MODE 365 | global CURRENT_X 366 | global CURRENT_Y 367 | global CURRENT_Z 368 | 369 | out = "" 370 | lastcommand = None 371 | precision_string = '.' + str(PRECISION) + 'f' 372 | 373 | params = ['X', 'Y', 'Z', 'A', 'B', 'C', 'U', 'V', 'W', 'I', 'J', 'K', 'F', 'S', 'T', 'Q', 'R', 'L', 'P'] 374 | 375 | if hasattr(pathobj, "Group"): # We have a compound or project. 376 | if OUTPUT_COMMENTS: 377 | out += linenumber() + "(Compound: " + pathobj.Label + ")\n" 378 | for p in pathobj.Group: 379 | out += parse(p) 380 | return out 381 | 382 | else: # parsing simple path 383 | if not hasattr(pathobj, "Path"): # groups might contain non-path things like stock. 384 | return out 385 | 386 | if OUTPUT_COMMENTS: 387 | out += linenumber() + "(Path: " + pathobj.Label + ")\n" 388 | 389 | for c in pathobj.Path.Commands: 390 | outstring = [] 391 | command = c.Name 392 | 393 | outstring.append(command) 394 | 395 | # if modal: only print the command if it is not the same as the last one 396 | if MODAL: 397 | if command == lastcommand: 398 | outstring.pop(0) 399 | 400 | # Now add the remaining parameters in order 401 | for param in params: 402 | if param in c.Parameters: 403 | if param == 'F': 404 | if command not in RAPID_MOVES: 405 | speed = Units.Quantity(c.Parameters['F'], FreeCAD.Units.Velocity) 406 | if speed.getValueAs(UNIT_SPEED_FORMAT) > 0.0: 407 | outstring.append(param + format(float(speed.getValueAs(UNIT_SPEED_FORMAT)), precision_string)) 408 | elif param in ['T', 'H', 'D', 'S', 'P', 'L']: 409 | outstring.append(param + str(c.Parameters[param])) 410 | elif param in ['A', 'B', 'C']: 411 | outstring.append(param + format(c.Parameters[param], precision_string)) 412 | else: # [X, Y, Z, U, V, W, I, J, K, R, Q] (Conversion eventuelle mm/inches) 413 | pos = Units.Quantity(c.Parameters[param], FreeCAD.Units.Length) 414 | outstring.append(param + format(float(pos.getValueAs(UNIT_FORMAT)), precision_string)) 415 | 416 | # store the latest command 417 | lastcommand = command 418 | 419 | # Memorizes the current position for calculating the related movements and the withdrawal plan 420 | if command in MOTION_COMMANDS: 421 | if 'X' in c.Parameters: 422 | CURRENT_X = Units.Quantity(c.Parameters['X'], FreeCAD.Units.Length) 423 | if 'Y' in c.Parameters: 424 | CURRENT_Y = Units.Quantity(c.Parameters['Y'], FreeCAD.Units.Length) 425 | if 'Z' in c.Parameters: 426 | CURRENT_Z = Units.Quantity(c.Parameters['Z'], FreeCAD.Units.Length) 427 | 428 | if command in ('G98', 'G99'): 429 | DRILL_RETRACT_MODE = command 430 | 431 | if command in ('G90', 'G91'): 432 | MOTION_MODE = command 433 | 434 | 435 | if TRANSLATE_DRILL_CYCLES: 436 | if command in ('G81', 'G82', 'G83'): 437 | out += drill_translate(outstring, command, c.Parameters) 438 | # Erase the line we just translated 439 | outstring = [] 440 | 441 | if SPINDLE_WAIT > 0: 442 | if command in ('M3', 'M03', 'M4', 'M04'): 443 | out += linenumber() + format_outstring(outstring) + "\n" 444 | out += linenumber() + format_outstring(['G4', 'P%s' % SPINDLE_WAIT]) + "\n" 445 | outstring = [] 446 | 447 | # Check for Tool Change: 448 | if command in ('M6', 'M06'): 449 | if OUTPUT_COMMENTS: 450 | out += linenumber() + "(Begin toolchange)\n" 451 | if not OUTPUT_TOOL_CHANGE: 452 | outstring.insert(0, "(" ) 453 | outstring.append( ")" ) 454 | else: 455 | for line in TOOL_CHANGE.splitlines(True): 456 | out += linenumber() + line 457 | 458 | if command == "message": 459 | if OUTPUT_COMMENTS is False: 460 | out = [] 461 | else: 462 | outstring.pop(0) # remove the command 463 | 464 | if command in SUPPRESS_COMMANDS: 465 | outstring.insert(0, "(" ) 466 | outstring.append( ")" ) 467 | 468 | # prepend a line number and append a newline 469 | if len(outstring) >= 1: 470 | out += linenumber() + format_outstring(outstring) + "\n" 471 | 472 | return out 473 | 474 | 475 | def drill_translate(outstring, cmd, params): 476 | global DRILL_RETRACT_MODE 477 | global MOTION_MODE 478 | global CURRENT_X 479 | global CURRENT_Y 480 | global CURRENT_Z 481 | global UNITS 482 | global UNIT_FORMAT 483 | global UNIT_SPEED_FORMAT 484 | 485 | strFormat = '.' + str(PRECISION) + 'f' 486 | 487 | trBuff = "" 488 | 489 | if OUTPUT_COMMENTS: # Comment the original command 490 | outstring[0] = "(" + outstring[0] 491 | outstring[-1] = outstring[-1] + ")" 492 | trBuff += linenumber() + format_outstring(outstring) + "\n" 493 | 494 | # cycle conversion 495 | # currently only cycles in XY are provided (G17) 496 | # other plains ZX (G18) and YZ (G19) are not dealt with : Z drilling only. 497 | drill_X = Units.Quantity(params['X'], FreeCAD.Units.Length) 498 | drill_Y = Units.Quantity(params['Y'], FreeCAD.Units.Length) 499 | drill_Z = Units.Quantity(params['Z'], FreeCAD.Units.Length) 500 | RETRACT_Z = Units.Quantity(params['R'], FreeCAD.Units.Length) 501 | # R less than Z is error 502 | if RETRACT_Z < drill_Z : 503 | trBuff += linenumber() + "(drill cycle error: R less than Z )\n" 504 | return trBuff 505 | 506 | if MOTION_MODE == 'G91': # G91 relative movements 507 | drill_X += CURRENT_X 508 | drill_Y += CURRENT_Y 509 | drill_Z += CURRENT_Z 510 | RETRACT_Z += CURRENT_Z 511 | 512 | if DRILL_RETRACT_MODE == 'G98' and CURRENT_Z >= RETRACT_Z: 513 | RETRACT_Z = CURRENT_Z 514 | 515 | # get the other parameters 516 | drill_feedrate = Units.Quantity(params['F'], FreeCAD.Units.Velocity) 517 | if cmd == 'G83': 518 | drill_Step = Units.Quantity(params['Q'], FreeCAD.Units.Length) 519 | a_bit = drill_Step * 0.05 # NIST 3.5.16.4 G83 Cycle: "current hole bottom, backed off a bit." 520 | elif cmd == 'G82': 521 | drill_DwellTime = params['P'] 522 | 523 | # wrap this block to ensure machine MOTION_MODE is restored in case of error 524 | try: 525 | if MOTION_MODE == 'G91': 526 | trBuff += linenumber() + "G90\n" # force absolute coordinates during cycles 527 | 528 | strG0_RETRACT_Z = 'G0 Z' + format(float(RETRACT_Z.getValueAs(UNIT_FORMAT)), strFormat) + "\n" 529 | strF_Feedrate = ' F' + format(float(drill_feedrate.getValueAs(UNIT_SPEED_FORMAT)), '.2f') + "\n" 530 | print (strF_Feedrate) 531 | 532 | # preliminary mouvement(s) 533 | if CURRENT_Z < RETRACT_Z: 534 | trBuff += linenumber() + strG0_RETRACT_Z 535 | trBuff += linenumber() + 'G0 X' + format(float(drill_X.getValueAs(UNIT_FORMAT)), strFormat) + ' Y' + format(float(drill_Y.getValueAs(UNIT_FORMAT)), strFormat) + "\n" 536 | if CURRENT_Z > RETRACT_Z: 537 | # NIST GCODE 3.5.16.1 Preliminary and In-Between Motion says G0 to RETRACT_Z. Here use G1 since retract height may be below surface ! 538 | trBuff += linenumber() + 'G1 Z' + format(float(RETRACT_Z.getValueAs(UNIT_FORMAT)), strFormat) + strF_Feedrate 539 | last_Stop_Z = RETRACT_Z 540 | 541 | # drill moves 542 | if cmd in ('G81', 'G82'): 543 | trBuff += linenumber() + 'G1 Z' + format(float(drill_Z.getValueAs(UNIT_FORMAT)), strFormat) + strF_Feedrate 544 | # pause where applicable 545 | if cmd == 'G82': 546 | trBuff += linenumber() + 'G4 P' + str(drill_DwellTime) + "\n" 547 | trBuff += linenumber() + strG0_RETRACT_Z 548 | else: # 'G83' 549 | if params['Q'] != 0 : 550 | while 1: 551 | if last_Stop_Z != RETRACT_Z : 552 | clearance_depth = last_Stop_Z + a_bit # rapid move to just short of last drilling depth 553 | trBuff += linenumber() + 'G0 Z' + format(float(clearance_depth.getValueAs(UNIT_FORMAT)) , strFormat) + "\n" 554 | next_Stop_Z = last_Stop_Z - drill_Step 555 | if next_Stop_Z > drill_Z: 556 | trBuff += linenumber() + 'G1 Z' + format(float(next_Stop_Z.getValueAs(UNIT_FORMAT)), strFormat) + strF_Feedrate 557 | trBuff += linenumber() + strG0_RETRACT_Z 558 | last_Stop_Z = next_Stop_Z 559 | else: 560 | trBuff += linenumber() + 'G1 Z' + format(float(drill_Z.getValueAs(UNIT_FORMAT)), strFormat) + strF_Feedrate 561 | trBuff += linenumber() + strG0_RETRACT_Z 562 | break 563 | 564 | except Exception as e: 565 | pass 566 | 567 | if MOTION_MODE == 'G91': 568 | trBuff += linenumber() + 'G91' # Restore if changed 569 | 570 | return trBuff 571 | 572 | 573 | # print(__name__ + ": GCode postprocessor loaded.") 574 | --------------------------------------------------------------------------------