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 rough_temple_bevel(temple, thinning):
p1 = extendLine(temple[-1], temple[-2], 3.175/2 - 0.5)
p2 = extendLine(temple[0], temple[1], 3.175/2 - 0.5)
p3 = extendLine(temple[0], temple[1], 15)
p4 = extendLine(temple[-1], temple[-2], 15) # room for dovetail
# p1 and p2 are just extensions of the temple - move them to the side a bit to
# clearance for when the dovetail cutter comes through
p1 = extendLine(p1, p2, 3)
p2 = extendLine(p2, p1, 3)
p3 = extendLine(p3, p4, 3)
p4 = extendLine(p4, p3, 3)
# Move to the dovetail cutter entry point, helix through stock.
# Cut a circle big enough to admit the dovetail cutter.
# Rough cut the end of the temple
# Clear a return path for the dovetail cutter.
return [
cam.change_tool("1/8in endmill"),
cam.feedrate(1000),
cam.rmh(p4 + [-5-thinning], 1, pitch=1),
cam.move(p1),
cam.move(p2),
cam.move(p3),
cam.move(p4),
cam.rapid(p4 + [10])
]
def temple_hinge_clearance(temple, thinning):
# Endpoints for the top bevel
entry = extendLine(temple[-1], temple[-2], 7.5)
p1 = extendLine(temple[0], temple[-1], 1)
p2 = extendLine(temple[-1], temple[0], 1)
return [
cam.change_tool("engraver"),
cam.feedrate(750),
cam.start_spindle(20000),
cam.rmp(entry + [-2 - thinning]),
cam.move(p1),
cam.move(p2),
cam.move(entry),
cam.move(entry + [10]),
]
def nose_contour(nose_rad, nose_h, nose_sa, nose_ra, face_con, thickness):
"""Creates the nose contour feature toolpath. Angular arguments are in degrees."""
nr = nose_rad
h = nose_h
sa = math.radians(nose_sa)
ra = math.radians(nose_ra)
xfloor = poly.left(face_con) - 3.175 # bottom most point minus tool radius
xfloor = max(xfloor, -27.0) # miminum safe distance without hitting clamp
nose_tool_radius = 3.175
nextpoly = nose.nose_poly(nr, h, sa, ra, xfloor, nose_tool_radius, 0.0)
r = [
"(Nose Contour)",
cam.change_tool("1/4in ballmill"),
cam.start_spindle(20000),
cam.feedrate(2000),
cam.rmp(nextpoly[0] + [2.0]) # Start near our first contour
]
direction = 1
for i in range(-20, (thickness + 2) * 10):
z = -i / 10.0
# r += cam.move(nextpoly[0])
if (direction < 0):
nextpoly.reverse()
direction = direction * -1
r += cam.contour(nextpoly, False)
r += cam.move([None, None, z])
nextpoly = nose.nose_poly(nr, h, sa, ra, xfloor, nose_tool_radius, z)
return r
def nose_contour(nose_rad, nose_h, nose_sa, nose_ra, face_con, thickness):
"""Creates the nose contour feature toolpath. Angular arguments are in degrees."""
nr = nose_rad
h = nose_h
sa = math.radians(nose_sa)
ra = math.radians(nose_ra)
xfloor = poly.left(face_con) - 3.175 # bottom most point minus tool radius
xfloor = max(xfloor, -27.0) # miminum safe distance without hitting clamp
nose_tool_radius = 3.175
nextpoly = nose.nose_poly(nr, h, sa, ra, xfloor, nose_tool_radius, 0.0)
r = [
"(Nose Contour)",
cam.change_tool("1/4in ballmill"),
cam.start_spindle(20000),
cam.feedrate(2000),
cam.rmp(nextpoly[0] + [2.0]) # Start near our first contour
]
direction = 1
for i in range(-20, (thickness+2)*10):
z = -i/10.0
# r += cam.move(nextpoly[0])
if(direction < 0):
nextpoly.reverse()
direction = direction * -1
r += cam.contour(nextpoly, False)
r += cam.move([None, None, z])
nextpoly = nose.nose_poly(nr, h, sa, ra, xfloor, nose_tool_radius, z)
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 bevel_temple(temple, thinning):
# Assume a 20 degree dovetail cutter, cutting 5mm from bottom
dovetail_offset = 9.52/2 - 1.82
entry = extendLine(temple[-1], temple[-2], 7.5)
# Endpoints for the undercut
p1 = extendLine(temple[-1], temple[-2], dovetail_offset)
p2 = extendLine(temple[0], temple[1], dovetail_offset)
p2 = extendLine(p2, p1, 2)
return [
cam.change_tool("dovetail"),
cam.feedrate(750),
cam.start_spindle(20000),
cam.rmp(entry + [-5-thinning]),
cam.move(p1),
cam.move(p2),
cam.move(entry),
cam.move(entry + [10]),
]
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 nose_contour(nose_rad, nose_h, nose_sa, nose_ra, face_con, thickness, thin_back, centering_shift):
"""Creates the nose contour feature toolpath. Angular arguments are in degrees."""#
print 'Generating nose contour'
nr = nose_rad
nose_tool_radius = 3.175
# We're cutting with a ball-end mill. Where it actually cuts is dependent on the
# ridge angle. If you draw a line at the ridge angle and put it tangent to the ball mill,
# that is the cutting line. The angle between the center of the ball mill and the intersection
# of the cutting line and the surface is 1/2 of the ridge angle. From that and the radius
# of the ball mill we can figure out the offset.
cutter_offset = (nose_tool_radius)*math.tan(math.radians(nose_ra/2))
sa = math.radians(nose_sa)
ra = math.radians(nose_ra)
h = nose_h + centering_shift
print 'centering shift', centering_shift
# h = nose_h
xfloor = poly.left(face_con) - 3.175 # bottom most point minus tool radius
xfloor = max(xfloor, -27.0) # miminum safe distance without hitting clamp
z_depth = -thin_back # Start a bit above the surface of the glasses
nextpoly = nose.nose_poly(nr, h, sa, ra, xfloor, cutter_offset, z_depth)
r = [
"(Nose Contour)",
cam.change_tool("1/4in ballmill"),
cam.start_spindle(20000),
cam.feedrate(4000),
cam.rmp(nextpoly[0] + [2.0]), # Start near our first contour
]
direction = 1
z_start = int((z_depth)*10) # We have to use integers for the range, also step in 1/10 mm steps
for i in range(-z_start, int(((thickness)+3)*10)):
z = -i/10.0
# r += cam.move(nextpoly[0])
if(direction < 0):
nextpoly.reverse()
direction = direction * -1
r += cam.move([None, None, z-thin_back]) # Z adjusted for any surfacing that happened
r += cam.contour(nextpoly, False)
nextpoly = nose.nose_poly(nr, h, sa, ra, xfloor, cutter_offset, z)
return r
def bevel_temple_ends(path1, path2, thinning):
depth = -4 - thinning
# Assume a 14 degree dovetail cutter, cutting 5mm from bottom
dovetail_offset = 12.35/2 - 1.25
return [
cam.comment("Bevel temple ends"),
cam.change_tool("dovetail"),
cam.start_spindle(20000),
cam.feedrate(750),
cam.rapid(path1[0]),
cam.rapid([None, None, depth]),
cam.move(path1[1]),
cam.move(path1[2]),
cam.move(path1[0]),
cam.rapid([None, None, 10]),
cam.rapid(path2[0]),
cam.rapid([None, None, depth]),
cam.move(path2[1]),
cam.move(path2[2]),
cam.move(path2[0]),
cam.move([None, None, 20])
]