New GearBox generator

boxes/generators/gearbox.py

@@ -0,0 +1,94 @@
+#!/usr/bin/env python3
+# Copyright (C) 2013-2016 Florian Festi
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program 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 General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from boxes import *
+
+class GearBox(Boxes):
+    """Gearbox with multiple identical stages"""
+    def __init__(self):
+        Boxes.__init__(self)
+        self.argparser.add_argument(
+            "--teeth1",  action="store", type=int, default=8,
+            help="number of teeth on ingoing shaft")
+        self.argparser.add_argument(
+            "--teeth2",  action="store", type=int, default=20,
+            help="number of teeth on outgoing shaft")
+        self.argparser.add_argument(
+            "--modulus",  action="store", type=float, default=3,
+            help="modulus of thetth in mm")
+        self.argparser.add_argument(
+            "--shaft",  action="store", type=float, default=6.,
+            help="diameter of the shaft")
+        self.argparser.add_argument(
+            "--stages",  action="store", type=int, default=4,
+            help="number of stages in the gear reduction")
+
+    def render(self):
+        # Initialize canvas
+        self.open()
+        
+        if self.teeth2 < self.teeth1:
+            self.teeth2, self.teeth1 = self.teeth1, self.teeth2
+
+        pitch1, size1, xxx = self.gears.sizes(teeth=self.teeth1,
+                                          dimension=self.modulus)
+        pitch2, size2, xxx = self.gears.sizes(teeth=self.teeth2,
+                                          dimension=self.modulus)
+
+        t = self.thickness
+        x = 1.1*t*self.stages
+        y = size1 + size2
+        h = max(size1, size2) + t
+
+        b = "F"
+        t = "e" # prepare for close box
+        mh = self.shaft
+        
+        # render your parts here
+        y1 = y/2-(pitch1+pitch2)+pitch1
+        y2 = y/2+(pitch1+pitch2)-pitch2
+
+        def sideCB():
+            self.hole(y1, h/2, mh/2)
+            self.hole(y2, h/2, mh/2)
+        
+        self.moveTo(self.thickness, self.thickness)
+        self.rectangularWall(y, h, [b, "f", t, "f"], callback=[sideCB], move="right")
+        self.rectangularWall(x, h, [b, "F", t, "F"], move="up")
+        self.rectangularWall(x, h, [b, "F", t, "F"])
+        self.rectangularWall(y, h, [b, "f", t, "f"], callback=[sideCB], move="left")
+        self.rectangularWall(x, h, [b, "F", t, "F"], move="up only")
+        
+        self.rectangularWall(x, y, "ffff", move="up")
+        
+        for i in range(self.stages-1):
+            self.gears(teeth=self.teeth2, dimension=self.modulus,
+                       mount_hole=mh, move="up")
+        self.gears(teeth=self.teeth2, dimension=self.modulus,
+                   mount_hole=mh, move="right")
+        for i in range(self.stages):
+            self.gears(teeth=self.teeth1, dimension=self.modulus,
+                       mount_hole=mh, move="down")
+        
+        self.close()
+
+def main():
+    b = Box()
+    b.parseArgs()
+    b.render()
+
+if __name__ == '__main__':
+    main()

scripts/boxesserver

@@ -27,7 +27,7 @@ except ImportError:
 
 
 from boxes.generators import box, box2, box3, drillbox
-from boxes.generators import flexbox, flexbox2, flexbox3, flexbox4
+from boxes.generators import flexbox, flexbox2, flexbox3, flexbox4, gearbox
 from boxes.generators import flextest, flextest2, folder, pulley
 from boxes.generators import magazinefile, trayinsert, traylayout, typetray, silverwarebox
 
@@ -88,6 +88,7 @@ class BServer:
             "FlexTest": flextest.FlexTest(),
             "FlexTest2": flextest2.FlexTest(),
             "Folder": folder.Folder(),
+            "GearBox" : gearbox.GearBox(),
             "MagazinFile" : magazinefile.Box(),
             "TrayInsert" : trayinsert.TrayInsert(),
             "Pulley" : pulley.Pulley(),