def generic_nose_contour(face_con, thickness, thin_back, centering_shift):
""" Use the tapered endmill to create a nose relief along the curve of the
glasses frame.
First construct a path that is a simple, average shape for a nose: 8 mm nose radius, 34 degree
splay. Compare the curve to the spline of the glasses, if the spline crosses our naive curve, follow
the glasses curve until it crosses the naive curve again, then keep following the naive curve.
"""
curve_offset = 0 # Set so tapered endmill cuts about 1mm from front face of frame
nose_sa = math.radians(34) # Experiment with this
nose_rad = 9
xfloor = -26 # set to avoid hitting clamp
nose_height = 8 # again, experiment
naive_poly = nose.nose_poly(nose_rad, nose_height, nose_sa, nose_sa, xfloor, curve_offset, 0)
# close it
#naive_poly = naive_poly + [naive_poly[0]]
intersect = poly.difference(naive_poly, face_con)
intersect = intersect[1:] + [intersect[0]]
eroded = poly.erode(2, intersect)[0]
finish = poly.erode(1.5, intersect)[0]
hole_radius = 4.85/2 # Measured from dowel pin
tool_radius = 3.175/2
helix_radius = hole_radius - tool_radius
return [
cam.change_tool("tapered"),
cam.start_spindle(20000),
cam.feedrate(1000),
cam.rmh(eroded[0] + [-thickness - 1.0], helix_radius, 0.5, 1),
cam.contour(eroded, False),
cam.contour(finish[::-1], False),
]
def lens_groove(left_c, right_c, height):
"""Generates the toolpath for the lens holes (holes, groove and tabs)."""
print 'Generating lens grooves'
if not poly.is_ccw(left_c):
left_c = poly.reverse(left_c)
if not poly.is_ccw(right_c):
right_c = poly.reverse(right_c)
lgroove = poly.erode(1.8, left_c)[0]
rgroove = poly.erode(1.8, right_c)[0]
left_entry = poly.erode(7.0, left_c)[0][0];
right_entry = poly.erode(7.0, right_c)[0][0];
r = [
"(Lens Grooves)",
cam.change_tool("vgroove"),
cam.start_spindle(20000),
cam.dwell(5),
cam.feedrate(2000),
cam.rmp(right_entry + [height]),
cam.contour(rgroove, True),
cam.move(right_entry), # Get out from under the overhang
cam.rmp(left_entry + [height]),
cam.contour(lgroove, True),
cam.move(left_entry), # Get out from under the overhang
]
return r
def temple_hinge_pockets(temples):
# We're operating in a 90 degree rotated fixture
#l_hinge = poly.rotate_90(temples["left_hinge_contour"])
#r_hinge = poly.rotate_90(temples["right_hinge_contour"])
l_hinge = temples["left_hinge_contour"]
r_hinge = temples["right_hinge_contour"]
if not poly.is_ccw(l_hinge):
l_hinge = poly.reverse(l_hinge)
if not poly.is_ccw(r_hinge):
r_hinge = poly.reverse(r_hinge)
left_hinge_pocket_contours = []
while len(l_hinge) > 0:
l_hinge = poly.erode(1.5875 / 2, l_hinge)
if len(l_hinge) > 0:
l_hinge = l_hinge[0]
left_hinge_pocket_contours.append(l_hinge)
right_hinge_pocket_contours = []
while len(r_hinge) > 0:
r_hinge = poly.erode(1.5875 / 2, r_hinge)
if len(r_hinge) > 0:
r_hinge = r_hinge[0]
right_hinge_pocket_contours.append(r_hinge)
r = [
cam.comment("Hinge Pockets"),
cam.feedrate(750),
cam.change_tool("1/16in endmill"),
cam.start_spindle(15000),
cam.dwell(3),
cam.comment("Right Hinge Pocket"),
cam.pocket(right_hinge_pocket_contours,
-abs(temples['pocket_depth']),
retract=0),
cam.rapid([None, None, 20.0]),
cam.comment("Left Hinge Pocket"),
cam.pocket(left_hinge_pocket_contours,
-abs(temples['pocket_depth']),
retract=0),
cam.rapid([None, None, 20.0]),
cam.comment("Hinge Holes"),
cam.change_tool("1mm drill"),
cam.start_spindle(4500),
cam.dwell(2),
[
cam.rmp(p + [-8.0], retract=10.0)
for p in temples['right_hinge_holes']
],
[
cam.rmp(p + [-8.0], retract=10.0)
for p in temples['left_hinge_holes']
],
cam.rapid([None, None, 20.0]),
cam.move([None, None, 0]),
cam.contour(poly.rotate_90(temples['left_temple_contour']), True),
cam.contour(poly.rotate_90(temples['right_temple_contour']), True),
]
return r
def face_hinge_pockets(hinge_num, xposition, yposition):
left_hinge = hinges.get_hinge(hinge_num)
right_hinge = hinges.get_hinge(hinge_num, False)
left_translate = [xposition, -yposition]
#left_translate = [xposition, 0]
right_translate = [xposition, yposition]
#right_translate = [xposition, 0]
# Adjust by pocket depth of hinge
pocket_depth = left_hinge['pocket_depth']
left_contour = poly.translate(left_hinge["face_contour"], left_translate[0], left_translate[1])
right_contour = poly.translate(right_hinge["face_contour"], right_translate[0], right_translate[1])
left_holes = poly.translate(left_hinge["face_holes"], left_translate[0], left_translate[1])
right_holes = poly.translate(right_hinge["face_holes"], right_translate[0], right_translate[1])
if not poly.is_ccw(left_contour):
left_contour = poly.reverse(left_contour)
if not poly.is_ccw(right_contour):
right_contour = poly.reverse(right_contour)
left_hinge_pocket_contours = [];
while len(left_contour) > 0:
left_contour = poly.erode(1.5875/2, left_contour)
if len(left_contour) > 0:
left_contour = left_contour[0]
left_hinge_pocket_contours.append(left_contour)
right_hinge_pocket_contours = [];
while len(right_contour) > 0:
right_contour = poly.erode(1.5875/2, right_contour)
if len(right_contour) > 0:
right_contour = right_contour[0]
right_hinge_pocket_contours.append(right_contour)
r = [
cam.comment("Hinge Pockets"),
cam.feedrate(750),
cam.change_tool("1/16in endmill"),
cam.start_spindle(15000),
cam.dwell(3),
cam.comment("Right Hinge Pocket"),
cam.pocket(right_hinge_pocket_contours, -abs(right_hinge['pocket_depth']), retract=0),
cam.rapid([None, None, 20.0]),
cam.comment("Left Hinge Pocket"),
cam.pocket(left_hinge_pocket_contours, -abs(left_hinge['pocket_depth']), retract=0),
cam.rapid([None, None, 20.0]),
cam.comment("Hinge Holes"),
cam.change_tool("1mm drill"),
cam.start_spindle(4500),
cam.dwell(2),
[cam.rmp(p + [-8.0], retract=10.0) for p in right_holes],
[cam.rmp(p + [-8.0], retract=10.0) for p in left_holes],
cam.rapid([None, None, 20.0]),
]
return r
def pocket_contours(contour):
contours = []
erode = poly.erode(1.5875/2, contour)
making_progress = True
while len(erode) > 0 and making_progress:
making_progress = False
for path in erode:
if len(path) > 5:
making_progress = True
contours.append(path)
erode = poly.erode(1.5875/2, contours[-1])
return contours
def lens_holes(left_c, right_c, thickness):
"""Generates the toolpath for the lens holes (holes, groove and tabs)."""
if not poly.is_ccw(left_c):
left_c = poly.reverse(left_c)
if not poly.is_ccw(right_c):
right_c = poly.reverse(right_c)
lhole = poly.erode(3.175 / 2.0, left_c)[0]
rhole = poly.erode(3.175 / 2.0, right_c)[0]
right_rough = poly.erode(0.1, rhole)[0]
left_rough = poly.erode(0.1, lhole)[0]
lgroove = poly.erode(0.8, left_c)[0]
rgroove = poly.erode(0.8, right_c)[0]
left_entry = poly.erode(2.0, lhole)[0][0]
right_entry = poly.erode(2.0, rhole)[0][0]
lhole = poly.reverse(lhole)
rhole = poly.reverse(rhole)
r = [
"(Lens Holes)",
cam.change_tool("1/8in endmill"),
cam.start_spindle(20000),
cam.feedrate(2000),
cam.rmh(right_entry + [-thickness - 1.0], 1.5, 0.5, 1.0),
cam.contour(right_rough, True),
cam.contour(rhole, True),
cam.rmh(left_entry + [-thickness - 1.0], 1.5, 0.5, 1.0),
cam.contour(left_rough, True),
cam.contour(lhole, True),
]
return r
def temple_hinge_pockets(temples):
# We're operating in a 90 degree rotated fixture
#l_hinge = poly.rotate_90(temples["left_hinge_contour"])
#r_hinge = poly.rotate_90(temples["right_hinge_contour"])
l_hinge = temples["left_hinge_contour"]
r_hinge = temples["right_hinge_contour"]
if not poly.is_ccw(l_hinge):
l_hinge = poly.reverse(l_hinge)
if not poly.is_ccw(r_hinge):
r_hinge = poly.reverse(r_hinge)
left_hinge_pocket_contours = [];
while len(l_hinge) > 0:
l_hinge = poly.erode(1.5875/2, l_hinge)
if len(l_hinge) > 0:
l_hinge = l_hinge[0]
left_hinge_pocket_contours.append(l_hinge)
right_hinge_pocket_contours = [];
while len(r_hinge) > 0:
r_hinge = poly.erode(1.5875/2, r_hinge)
if len(r_hinge) > 0:
r_hinge = r_hinge[0]
right_hinge_pocket_contours.append(r_hinge)
r = [
cam.comment("Hinge Pockets"),
cam.feedrate(750),
cam.change_tool("1/16in endmill"),
cam.start_spindle(15000),
cam.dwell(3),
cam.comment("Right Hinge Pocket"),
cam.pocket(right_hinge_pocket_contours, -abs(temples['pocket_depth']), retract=0),
cam.rapid([None, None, 20.0]),
cam.comment("Left Hinge Pocket"),
cam.pocket(left_hinge_pocket_contours, -abs(temples['pocket_depth']), retract=0),
cam.rapid([None, None, 20.0]),
cam.comment("Hinge Holes"),
cam.change_tool("1mm drill"),
cam.start_spindle(4500),
cam.dwell(2),
[cam.rmp(p + [-8.0], retract=10.0) for p in temples['right_hinge_holes']],
[cam.rmp(p + [-8.0], retract=10.0) for p in temples['left_hinge_holes']],
cam.rapid([None, None, 20.0]),
cam.move([None, None, 0]),
cam.contour(poly.rotate_90(temples['left_temple_contour']), True),
cam.contour(poly.rotate_90(temples['right_temple_contour']), True),
]
return r
def main():
"""Run as a command line program."""
parser = OptionParser()
parser.add_option("-i", "--infile", dest="infile",
help="read specification from INFILE", metavar="INFILE")
parser.add_option("-u", "--url", dest="url",
help="read specification from URL", metavar="URL")
parser.add_option("-o", "--outdir", dest="outdir",
help="write manufacturing instruction files to OUTDIR", metavar="OUTDIR")
(options, args) = parser.parse_args()
if (options.infile == None and options.url == None):
log("Insufficient arguments.")
parser.print_help()
sys.exit(0)
infile = open(options.infile) if options.infile else urllib.urlopen(options.url)
o = json.loads(infile.read())
drawing = dxf.drawing('test.dxf')
drawing.add_layer('OUTLINE', color=1)
lhole = o['lhole_con']
polyline = dxf.polyline(layer="OUTLINE")
polyline.add_vertices(lhole)
drawing.add(polyline)
p2 = poly.erode(3.175/2.0, lhole)[0]
p2 = poly.erode(2.0, p2);
poly2 = dxf.polyline(layer="OUTLINE")
poly2.add_vertices(p2[0])
drawing.add(poly2)
drawing.save()
def lens_holes(left_c, right_c, thickness):
"""Generates the toolpath for the lens holes (holes, groove and tabs)."""
print 'Calculating the lens holes'
tool_radius = 3.175
if not poly.is_ccw(left_c):
left_c = poly.reverse(left_c)
if not poly.is_ccw(right_c):
right_c = poly.reverse(right_c)
# drawing = dxf.drawing('test.dxf')
# drawing.add_layer('OUTLINE', color=1)
# polyline = dxf.polyline(layer="OUTLINE")
# polyline.add_vertices(left_c)
# drawing.add(polyline)
lhole = poly.erode(tool_radius/2.0, left_c)[0]
rhole = poly.erode(tool_radius/2.001, right_c);
rhole = rhole[0]
# polyline = dxf.polyline(layer="OUTLINE")
# polyline.add_vertices(lhole)
# drawing.add(polyline)
right_rough = poly.erode((tool_radius + 0.3)/2, right_c)[0]
left_rough = poly.erode((tool_radius+0.3)/2, left_c)[0]
#lgroove = poly.erode(0.8, left_c)[0]
#rgroove = poly.erode(0.8, right_c)[0]
left_entry = poly.erode(5.0, left_c)[0][0];
right_entry = poly.erode(5.0, right_c)[0][0];
lhole = poly.reverse(lhole)
rhole = poly.reverse(rhole)
r = [
"(Lens Holes)",
cam.change_tool("1/8in endmill"),
cam.start_spindle(22000),
cam.feedrate(2000),
cam.rmh(right_entry + [-thickness - 1.0], 1.5, 0.5, 1.0),
cam.contour(right_rough, True),
cam.feedrate(1000),
cam.contour(rhole, True),
cam.feedrate(2000),
cam.rmh(left_entry + [-thickness - 1.0], 1.5, 0.5, 1.0),
cam.contour(left_rough, True),
cam.feedrate(1000),
cam.contour(lhole, True),
]
return r
def lens_holes(left_c, right_c, thickness):
"""Generates the toolpath for the lens holes (holes, groove and tabs)."""
if not poly.is_ccw(left_c):
left_c = poly.reverse(left_c)
if not poly.is_ccw(right_c):
right_c = poly.reverse(right_c)
lhole = poly.erode(3.175/2.0, left_c)[0]
rhole = poly.erode(3.175/2.0, right_c)[0]
right_rough = poly.erode(0.1, rhole)[0]
left_rough = poly.erode(0.1, lhole)[0]
lgroove = poly.erode(0.8, left_c)[0]
rgroove = poly.erode(0.8, right_c)[0]
left_entry = poly.erode(2.0, lhole)[0][0];
right_entry = poly.erode(2.0, rhole)[0][0];
lhole = poly.reverse(lhole)
rhole = poly.reverse(rhole)
r = [
"(Lens Holes)",
cam.change_tool("1/8in endmill"),
cam.start_spindle(20000),
cam.feedrate(2000),
cam.rmh(right_entry + [-thickness - 1.0], 1.5, 0.5, 1.0),
cam.contour(right_rough, True),
cam.contour(rhole, True),
cam.rmh(left_entry + [-thickness - 1.0], 1.5, 0.5, 1.0),
cam.contour(left_rough, True),
cam.contour(lhole, True),
]
return r
def mill_hinges(outdir):
"""Creates the g-code for the first milling operation. The
first milling operation is done on an unregistered plastic blank,
so includes creating registration holes for subsequent operations."""
y_offsets = [y*15 for y in range(-5, 6)]
x_offsets = [x*7 for x in range(-3, 4)]
hinge = hinges.get_hinge(2);
contour = hinge['face_contour']
contours = []
erode = poly.erode(1.5875/2, contour)
while len(erode) > 0:
if len(erode) >= 1:
contours.append(erode[0])
else:
break
erode = poly.erode(1.5875/2, contours[-1])
program = [
cam.setup(),
cam.select_fixture("blank_clamp"),
cam.retract_spindle(),
cam.activate_pin("stock_clamp"),
cam.change_tool("1/16in endmill"),
cam.rapid([0,0]),
cam.start_spindle(20000),
cam.dwell(3),
# cam.pocket(contours, -1, -1),
# cam.rapid([None, None, 20.0]),
# cam.change_tool("1mm drill"),
# cam.start_spindle(4500),
# [cam.rmp(p + [-2.5], retract=10.0) for p in hinge['face_holes']],
]
for y_offset in y_offsets:
for x_offset in x_offsets:
program += [
cam.rapid([x_offset, y_offset]),
cam.temporary_offset((0,0)),
cam.pocket(contours, -1.2, -1.2),
cam.rapid([None, None, 20.0]),
cam.remove_temporary_offset(),
]
# program += [
# cam.change_tool("1mm drill"),
# cam.start_spindle(4500),
# ]
# for y_offset in y_offsets:
# for x_offset in x_offsets:
# program += [
# cam.rapid([x_offset, y_offset]),
# cam.temporary_offset((0,0)),
# [cam.rmp(p + [-2.5], retract=10.0) for p in hinge['face_holes']],
# cam.rapid([None, None, 20.0]),
# cam.remove_temporary_offset(),
# ]
program += [
cam.deactivate_pin("stock_clamp"),
cam.end_program(),
]
open(outdir + "/face_stage1.ngc", "w").write(to_string(program))
def face_hinge_pockets(hinge_num, hinge_height, temple_position, centering_shift, thin_back):
print 'Generating face hinge pockets', hinge_num
xposition = hinge_height;
yposition = temple_position+3.0; # 4mm for the temple, but less 1mm for temple hinge pocket
print 'Position is ', xposition, yposition
left_hinge = hinges.get_hinge(hinge_num)
print 'Got left hinge'
right_hinge = hinges.get_hinge(hinge_num, False)
print 'Retrieved hinge contours'
left_translate = [xposition, yposition]
right_translate = [xposition, -yposition]
print 'Calculated hinge translations'
#right_translate = [xposition, 0]
# Adjust by pocket depth of hinge
#pocket_depth = left_hinge['pocket_depth']+thin_back
pocket_depth = 1 + thin_back
drill_depth = -thin_back - 2.0
left_contour = poly.mirror_x(poly.rotate_90(left_hinge["face_contour"]), False)
right_contour = poly.mirror_x(poly.rotate_90(right_hinge["face_contour"]), False)
left_holes = poly.mirror_x(poly.rotate_90(left_hinge["face_holes"]), False)
right_holes = poly.mirror_x(poly.rotate_90(right_hinge["face_holes"]), False)
left_contour = poly.translate(left_contour, left_translate[0], -left_translate[1])
right_contour = poly.translate(right_contour, right_translate[0], -right_translate[1])
left_holes = poly.translate(left_holes, left_translate[0], -left_translate[1])
right_holes = poly.translate(right_holes, right_translate[0], -right_translate[1])
# Now center everything on the stock
left_contour = poly.translate(left_contour, centering_shift[0], -centering_shift[1])
right_contour = poly.translate(right_contour, centering_shift[0], -centering_shift[1])
left_holes = poly.translate(left_holes, centering_shift[0], -centering_shift[1])
right_holes = poly.translate(right_holes, centering_shift[0], -centering_shift[1])
if not poly.is_ccw(left_contour):
left_contour = poly.reverse(left_contour)
if not poly.is_ccw(right_contour):
right_contour = poly.reverse(right_contour)
left_hinge_pocket_contours = [];
while len(left_contour) > 0:
left_contour = poly.erode(1.5875/2, left_contour)
if len(left_contour) > 0:
left_contour = left_contour[0]
left_hinge_pocket_contours.append(left_contour)
right_hinge_pocket_contours = [];
while len(right_contour) > 0:
right_contour = poly.erode(1.5875/2, right_contour)
if len(right_contour) > 0:
right_contour = right_contour[0]
right_hinge_pocket_contours.append(right_contour)
r = [
cam.comment("Hinge Pockets"),
cam.feedrate(750),
cam.change_tool("1/16in endmill"),
cam.start_spindle(20000),
cam.dwell(3),
cam.comment("Right Hinge Pocket"),
cam.pocket(right_hinge_pocket_contours, -abs(pocket_depth), retract=-abs(pocket_depth)),
cam.rapid([None, None, 20.0]),
cam.comment("Left Hinge Pocket"),
cam.pocket(left_hinge_pocket_contours, -abs(pocket_depth), retract=-abs(pocket_depth)),
cam.rapid([None, None, 20.0]),
cam.comment("Hinge Holes"),
cam.change_tool("1mm drill"),
cam.start_spindle(5000),
cam.dwell(2),
[cam.rmp(p + [drill_depth], retract=10.0) for p in right_holes],
[cam.rmp(p + [drill_depth], retract=10.0) for p in left_holes],
cam.rapid([None, None, 20.0]),
]
return r
def face_hinge_pockets(hinge_num, xposition, yposition):
left_hinge = hinges.get_hinge(hinge_num)
right_hinge = hinges.get_hinge(hinge_num, False)
left_translate = [xposition, -yposition]
#left_translate = [xposition, 0]
right_translate = [xposition, yposition]
#right_translate = [xposition, 0]
# Adjust by pocket depth of hinge
pocket_depth = left_hinge['pocket_depth']
left_contour = poly.translate(left_hinge["face_contour"],
left_translate[0], left_translate[1])
right_contour = poly.translate(right_hinge["face_contour"],
right_translate[0], right_translate[1])
left_holes = poly.translate(left_hinge["face_holes"], left_translate[0],
left_translate[1])
right_holes = poly.translate(right_hinge["face_holes"], right_translate[0],
right_translate[1])
if not poly.is_ccw(left_contour):
left_contour = poly.reverse(left_contour)
if not poly.is_ccw(right_contour):
right_contour = poly.reverse(right_contour)
left_hinge_pocket_contours = []
while len(left_contour) > 0:
left_contour = poly.erode(1.5875 / 2, left_contour)
if len(left_contour) > 0:
left_contour = left_contour[0]
left_hinge_pocket_contours.append(left_contour)
right_hinge_pocket_contours = []
while len(right_contour) > 0:
right_contour = poly.erode(1.5875 / 2, right_contour)
if len(right_contour) > 0:
right_contour = right_contour[0]
right_hinge_pocket_contours.append(right_contour)
r = [
cam.comment("Hinge Pockets"),
cam.feedrate(750),
cam.change_tool("1/16in endmill"),
cam.start_spindle(15000),
cam.dwell(3),
cam.comment("Right Hinge Pocket"),
cam.pocket(right_hinge_pocket_contours,
-abs(right_hinge['pocket_depth']),
retract=0),
cam.rapid([None, None, 20.0]),
cam.comment("Left Hinge Pocket"),
cam.pocket(left_hinge_pocket_contours,
-abs(left_hinge['pocket_depth']),
retract=0),
cam.rapid([None, None, 20.0]),
cam.comment("Hinge Holes"),
cam.change_tool("1mm drill"),
cam.start_spindle(4500),
cam.dwell(2),
[cam.rmp(p + [-8.0], retract=10.0) for p in right_holes],
[cam.rmp(p + [-8.0], retract=10.0) for p in left_holes],
cam.rapid([None, None, 20.0]),
]
return r