File size: 5,134 Bytes
985c397 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | # SPDX-License-Identifier: LGPL-2.1-or-later
# *****************************************************************************
# * Copyright (c) 2020 Rene Bartsch, B.Sc. Informatics <rene@bartschnet.de> *
# * *
# * This file is part of the FreeCAD CAx development system. *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * FreeCAD is distributed in the hope that it will be useful, *
# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
# * GNU Lesser General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with FreeCAD; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ****************************************************************************/
"""Postprocessor to output real GCode for Max Computer GmbH nccad9."""
import FreeCAD
import Path.Post.Utils as PostUtils
import PathScripts.PathUtils as PathUtils
import datetime
TOOLTIP = """
This is a postprocessor file for the Path workbench. It is used to take
a pseudo-G-code fragment output by a Path object and output real G-code
suitable for the Max Computer GmbH nccad9 Computer Numeric Control.
Supported features:
- 3-axis milling
- manual tool change with tool number as comment
- spindle speed as comment
!!! gCode files must use the suffix .knc !!!
import nccad_post
nccad_post.export([object], "/path/to/file.knc", "")
"""
MACHINE_NAME = """Max Computer GmbH nccad9 MCS/KOSY"""
# gCode for changing tools
# M01 <String> ; Displays <String> and waits for user interaction
TOOL_CHANGE = """G77 ; Move to release position
M10 O6.0 ; Stop spindle
M01 Insert tool TOOL
G76 ; Move to reference point to ensure correct coordinates after tool change
M10 O6.1 ; Start spindle"""
# gCode finishing the program
POSTAMBLE = """G77 ; Move to release position
M10 O6.0 ; Stop spindle"""
# gCode header with information about CAD-software, post-processor
# and date/time
if FreeCAD.ActiveDocument:
cam_file = FreeCAD.ActiveDocument.FileName
else:
cam_file = "<None>"
HEADER = """;Exported by FreeCAD
;Post Processor: {}
;CAM file: {}
;Output Time: {}
""".format(
__name__, cam_file, str(datetime.datetime.now())
)
def export(objectslist, filename, argstring):
"""Export the list of objects into a filename.
Parameters
----------
objectslists: list
List of objects.
filename: str
Name of the output file ending in `'.knc'`.
"""
gcode = HEADER
for obj in objectslist:
for command in PathUtils.getPathWithPlacement(obj).Commands:
# Manipulate tool change commands
if "M6" == command.Name:
gcode += TOOL_CHANGE.replace("TOOL", str(int(command.Parameters["T"])))
elif "M3" == command.Name:
# Convert spindle speed (rpm) command to comment
gcode += (
"M01 Set spindle speed to "
+ str(int(command.Parameters["S"]))
+ " rounds per minute"
)
else:
# Add other commands
gcode += command.Name
# Loop through command parameters
for parameter, value in command.Parameters.items():
# Multiply F parameter value by 10,
# FreeCAD = mm/s, nccad = 1/10 mm/s
if "F" == parameter:
value *= 10
# Add command parameters and values and round float
# as nccad9 does not support exponents
gcode += " " + parameter + str(round(value, 5))
gcode += "\n"
gcode += POSTAMBLE + "\n"
# Open editor window
if FreeCAD.GuiUp:
dia = PostUtils.GCodeEditorDialog()
dia.editor.setPlainText(gcode)
result = dia.exec_()
if result:
gcode = dia.editor.toPlainText()
# Save to file
if filename != "-":
gfile = open(filename, "w")
gfile.write(gcode)
gfile.close()
return filename
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