From 4d7c55ae52d904a7d28dac622e5f10e12b9c09e5 Mon Sep 17 00:00:00 2001
From: Neil Gershenfeld <gersh@cba.mit.edu>
Date: Fri, 26 May 2017 13:05:32 -0400
Subject: [PATCH] start G-codes
---
modules/index.html | 2 +
modules/toolpath/formats/G-code | 223 ++++++++++++++++++++++++++++++++
2 files changed, 225 insertions(+)
create mode 100644 modules/toolpath/formats/G-code
diff --git a/modules/index.html b/modules/index.html
index 4eac9d6..4a7b75a 100644
--- a/modules/index.html
+++ b/modules/index.html
@@ -81,6 +81,8 @@
<a href="javascript:handler('modules/string/format')">format</a><br>
<a href="javascript:handler('modules/string/variables')">variables</a><br>
<i>toolpath</i><br>
+<i> formats</i><br>
+ <a href="javascript:handler('modules/toolpath/formats/G-code')">G-code</a><br>
<i> machines</i><br>
<i> Roland</i><br>
<i> milling</i><br>
diff --git a/modules/toolpath/formats/G-code b/modules/toolpath/formats/G-code
new file mode 100644
index 0000000..d677a04
--- /dev/null
+++ b/modules/toolpath/formats/G-code
@@ -0,0 +1,223 @@
+//
+// G-code
+//
+// Neil Gershenfeld
+// (c) Massachusetts Institute of Technology 2017
+//
+// This work may be reproduced, modified, distributed, performed, and
+// displayed for any purpose, but must acknowledge the mods
+// project. Copyright is retained and must be preserved. The work is
+// provided as is; no warranty is provided, and users accept all
+// liability.
+//
+// closure
+//
+(function(){
+//
+// module globals
+//
+var mod = {}
+//
+// name
+//
+var name = 'G-code'
+//
+// initialization
+//
+var init = function() {
+ mod.cutspeed.value = 20
+ mod.plungespeed.value = 20
+ mod.jogspeed.value = 75
+ mod.jogheight.value = 5
+ mod.spindlespeed.value = 10000
+ mod.unitsin.checked = true
+ }
+//
+// inputs
+//
+var inputs = {
+ toolpath:{type:'object',
+ event:function(evt){
+ mod.name = evt.detail.name
+ mod.path = evt.detail.path
+ mod.dpi = evt.detail.dpi
+ mod.width = evt.detail.width
+ mod.height = evt.detail.height
+ make_path()
+ }}}
+//
+// outputs
+//
+var outputs = {
+ file:{type:'object',
+ event:function(str){
+ obj = {}
+ obj.name = mod.name+".sbp"
+ obj.contents = str
+ mods.output(mod,'file',obj)
+ }}}
+//
+// interface
+//
+var interface = function(div){
+ mod.div = div
+ //
+ // cut speed
+ //
+ div.appendChild(document.createTextNode('cut speed: '))
+ var input = document.createElement('input')
+ input.type = 'text'
+ input.size = 6
+ div.appendChild(input)
+ mod.cutspeed = input
+ div.appendChild(document.createTextNode(' (mm/s)'))
+ div.appendChild(document.createElement('br'))
+ //
+ // plunge speed
+ //
+ div.appendChild(document.createTextNode('plunge speed: '))
+ var input = document.createElement('input')
+ input.type = 'text'
+ input.size = 6
+ div.appendChild(input)
+ mod.plungespeed = input
+ div.appendChild(document.createTextNode(' (mm/s)'))
+ div.appendChild(document.createElement('br'))
+ //
+ // jog speed
+ //
+ div.appendChild(document.createTextNode('jog speed: '))
+ var input = document.createElement('input')
+ input.type = 'text'
+ input.size = 6
+ div.appendChild(input)
+ mod.jogspeed = input
+ div.appendChild(document.createTextNode(' (mm/s)'))
+ div.appendChild(document.createElement('br'))
+ //
+ // jog height
+ //
+ div.appendChild(document.createTextNode('jog height: '))
+ var input = document.createElement('input')
+ input.type = 'text'
+ input.size = 6
+ div.appendChild(input)
+ mod.jogheight = input
+ div.appendChild(document.createTextNode(' (mm)'))
+ div.appendChild(document.createElement('br'))
+ //
+ // spindle speed
+ //
+ div.appendChild(document.createTextNode('spindle speed: '))
+ var input = document.createElement('input')
+ input.type = 'text'
+ input.size = 6
+ div.appendChild(input)
+ mod.spindlespeed = input
+ div.appendChild(document.createTextNode(' (RPM)'))
+ div.appendChild(document.createElement('br'))
+ //
+ // file units
+ //
+ div.appendChild(document.createTextNode('file units:'))
+ var input = document.createElement('input')
+ input.type = 'radio'
+ input.name = mod.div.id+'units'
+ input.id = mod.div.id+'unitsin'
+ div.appendChild(input)
+ mod.unitsin = input
+ div.appendChild(document.createTextNode('in'))
+ var input = document.createElement('input')
+ input.type = 'radio'
+ input.name = mod.div.id+'units'
+ input.id = mod.div.id+'unitsmm'
+ div.appendChild(input)
+ mod.unitsmm = input
+ div.appendChild(document.createTextNode('mm'))
+ }
+//
+// local functions
+//
+function make_path() {
+ var dx = units*mod.width/mod.dpi
+ var nx = mod.width
+ var scale = dx/(nx-1)
+ var jog_speed = parseFloat(mod.jogspeed.value)/25.4
+ var cut_speed = parseFloat(mod.cutspeed.value)/25.4
+ var plunge_speed = parseFloat(mod.plungespeed.value)/25.4
+ var jog_height = parseFloat(mod.jogheight.value)/25.4
+ var spindle_speed = parseFloat(mod.spindlespeed.value)
+ var tool = parseInt(mod.tool.value)
+ str = "%\n" // tape start
+ // xy plane, inch mode, cancel diameter compensation, cancel length offset
+ // coordinate system 1, cancel motion, non-incremental motion, feed/minute mode
+ str += "G17\n"
+ str += "G20\n"
+ str += "G40\n"
+ str += "G49\n"
+ str += "G54\n"
+ str += "G80\n"
+ str += "G90\n"
+ str += "G94\n"
+ str += "T"+tool+"M06\n" // tool selection, tool change
+ str += "F"+cut_speed.toFixed(4)+"\n" // feed rate
+ str += "S"+spindle_speed+"\n" // spindle speed
+ if (mod.coolant.checked)
+ str += "M08\n" // coolant on
+ str += "G00Z"+jog_height.toFixed(4)+"\n" // move up before starting spindle
+ str += "M03\n" // spindle on clockwise
+ str += "G04 P1\n" // give spindle 1 second to spin up
+ //
+ // follow segments
+ //
+ for (var seg = 0; seg < mod.path.length; ++seg) {
+ //
+ // move up to starting point
+ //
+ x = scale*mod.path[seg][0][0]
+ y = scale*mod.path[seg][0][1]
+ str += "Z"+jog_height.toFixed(4)+"\n"
+ str += "G00X"+x.toFixed(4)+"Y"+y.toFixed(4)+"Z"+jog_height.toFixed(4)+"\n"
+ //
+ // move down
+ //
+ z = scale*mod.path[seg][0][2]
+ str += "G01Z"+z.toFixed(4)+" F"+plunge_speed.toFixed(4)+"\n"
+ str += "F"+cut_speed.toFixed(4)+"\n" //restore xy feed rate
+ for (var pt = 1; pt < mod.path[seg].length; ++pt) {
+ //
+ // move to next point
+ //
+ x = scale*mod.path[seg][pt][0]
+ y = scale*mod.path[seg][pt][1]
+ z = scale*mod.path[seg][pt][2]
+ str += "G01X"+x.toFixed(4)+"Y"+y.toFixed(4)+"Z"+z.toFixed(4)+"\n"
+ }
+ }
+ //
+ // finish
+ //
+ str += "G00Z"+jog_height.toFixed(4)+"\n" // move up before stopping spindle
+ str += "M05\n" // spindle stop
+ if (mod.coolant.checked)
+ str += "M09\n" // coolant off
+ str += "M30\n" // program end and reset
+ str += "%\n" // tape end
+ //
+ // output file
+ //
+ str += "MZ,"+jog_height.toFixed(4)+"\r\n"
+ outputs.file.event(str)
+ }
+//
+// return values
+//
+return ({
+ name:name,
+ init:init,
+ inputs:inputs,
+ outputs:outputs,
+ interface:interface
+ })
+}())
+
--
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