def rectangularPocket(area,
target_depth,
stock_thickness,
safe_Z,
cut_per_pass,
bit_diameter,
debug=False):
"""
area argument requires tuple (length, width).
target_depth is an absolute Z coordinate.
Assumes that the bit is already in the origin corner.
Origin is (minCornerX + bit_radius, minCornerY + bit_radius)
"""
file_text = G.set_ABS_mode()
if debug:
file_text += "; target_depth: " + str(target_depth) + "\n"
file_text += "; stock_thickness: " + str(stock_thickness) + "\n"
file_text += "; cut_per_pass: "******"\n"
file_text += "; bit_diameter: " + str(bit_diameter) + "\n"
file_text += G.G0_Z(stock_thickness)
while stock_thickness > target_depth:
stock_thickness -= cut_per_pass
if stock_thickness < target_depth:
stock_thickness = target_depth
# Z-axis move by ABSOLUTE coords
file_text += G.set_ABS_mode()
file_text += G.G1_Z(stock_thickness)
file_text += rectAreaByOutline(area, bit_diameter)
file_text += G.G0_Z(safe_Z)
return file_text
def tenon(rail, stile, offsets, tenon, mortise_bit_diameter, bit_diameter,
safe_Z, cut_per_pass):
"""
Assumed bit location (center) is at refs origin, at safe_Z, and machine is assumed in ABS mode.
It is usual that mortise_bit_diameter == bit_diameter.
Requires:
rail = (rail_face_width, rail_thickness)
stile = (stile_face_width, stile_thickness)
offsets = (offset_from_face, offset_from_end)
tenon = (length, width, depth)
"""
# Unpacking the tuples
rail_face_width, rail_thickness = rail
stile_face_width, stile_thickness = stile
offset_from_face, offset_from_end = offsets
length, width, depth = tenon
bit_radius = bit_diameter / 2.0
corner_radius = mortise_bit_diameter / 2.0
file_text = ''
# if debug:
# file_text += "; target_depth: " + str(target_depth) + "\n"
# file_text += "; stock_thickness: " + str(stock_thickness) + "\n"
# file_text += "; cut_per_pass: "******"\n"
# file_text += "; bit_diameter: " + str(bit_diameter) + "\n"
if (offset_from_face <= bit_diameter) and (offset_from_end <= bit_diameter) and \
(rail_face_width - offset_from_end - length <= bit_diameter) and \
(rail_thickness - offset_from_face - width <= bit_diameter):
file_text += G.set_ABS_mode()
file_text += G.G0_Z(safe_Z)
file_text += G.set_INCR_mode()
file_text += G.G0_X(offset_from_end + corner_radius)
file_text += G.set_ABS_mode()
file_text += G.G0_Z(stile_face_width)
# Making target_depth a reference from machine's Z = 0.
target_depth = stile_face_width - depth
while stile_face_width > target_depth:
stile_face_width -= cut_per_pass
if stile_face_width < target_depth:
stile_face_width = target_depth
# Z-axis move by ABSOLUTE coords
file_text += G.set_ABS_mode()
file_text += G.G1_Z(stile_face_width)
file_text += G.set_INCR_mode()
file_text += roundedRectangle(length, width, mortise_bit_diameter,
bit_diameter, 'inside')
else:
file_text = 'Not implemented yet'
file_text += G.set_ABS_mode()
file_text += G.G0_Z(safe_Z)
return file_text
def bore_circle_ID(Z_safe, stock_thickness, cut_per_pass, target_depth,
cutter_diameter, circle_diameter):
"""use G2; from specified diameter and thickness;
cutter compensation in function.
Note that this method mixes ABSOLUTE with INCREMENTAL modes:
all moves in XY are in INCR and all moves in Z are ABS."""
assert cutter_diameter <= circle_diameter, "bit is too large for desired hole"
assert Z_safe > stock_thickness, "Z_safe is too short for stock thickness"
# alternate path: do a straight drill
if cutter_diameter == circle_diameter:
file_text = G.set_ABS_mode()
file_text += G.G0_Z(stock_thickness)
file_text += G.G1_Z(target_depth)
file_text += G.set_dwell(0.5)
file_text += G.G0_Z(Z_safe)
return file_text
off_set = (circle_diameter - cutter_diameter) / 2.0
file_text = G.set_ABS_mode()
file_text += G.G0_Z(Z_safe)
# XY-plane move to starting point
file_text += G.set_INCR_mode()
file_text += G.G0_XY((-off_set, 0))
# Z-axis move to starting point
file_text += G.set_ABS_mode()
file_text += G.G0_Z(stock_thickness)
while stock_thickness > target_depth:
stock_thickness -= cut_per_pass
if stock_thickness < target_depth:
stock_thickness = target_depth
# Z-axis move
file_text += G.set_ABS_mode()
file_text += G.G1_Z(stock_thickness)
# XY-plane arc move
file_text += G.G2XY_to_INCR_FULL((0, 0), (off_set, 0))
# At end of cut, ensures that the program reaches the very bottom
file_text += G.set_dwell(0.5)
# Z-axis move
# TODO: move this to before the return to origin
file_text += G.set_ABS_mode()
file_text += G.G0_Z(Z_safe)
# Then put the bit back to (0,0)
file_text += G.set_INCR_mode()
file_text += G.G0_XY((off_set, 0))
return file_text
def polar_holes(Z_safe, stock_thickness, cut_per_pass, target_depth,
cutter_diameter, circle_diameter, num_holes,
hole_circle_diameter):
assert num_holes > 1, "too few holes to form a circle of holes; must be at least 2"
hole_circle_radius = hole_circle_diameter / 2.0
file_text = G.set_ABS_mode()
file_text += G.G0_Z(Z_safe)
radians_increment = 2 * math.pi / num_holes
# drill first hole
x = math.cos(0) * hole_circle_radius
y = math.sin(0) * hole_circle_radius
file_text += G.set_INCR_mode()
file_text += G.G0_XY((x, y))
file_text += bore_circle_ID(Z_safe, stock_thickness, cut_per_pass,
target_depth, cutter_diameter, circle_diameter)
# drill all other holes
for i in xrange(1, int(num_holes)):
x = -(math.cos((i - 1) * radians_increment) * hole_circle_radius) + (
math.cos(i * radians_increment) * hole_circle_radius)
y = -(math.sin((i - 1) * radians_increment) * hole_circle_radius) + (
math.sin(i * radians_increment) * hole_circle_radius)
file_text += G.set_INCR_mode()
file_text += G.G0_XY((x, y))
file_text += bore_circle_ID(Z_safe, stock_thickness, cut_per_pass,
target_depth, cutter_diameter,
circle_diameter)
# return to Z_safe and origin
file_text += G.set_ABS_mode()
file_text += G.G0_Z(Z_safe)
file_text += G.set_INCR_mode()
x = -(math.cos((num_holes - 1) * radians_increment) * hole_circle_radius)
y = -(math.sin((num_holes - 1) * radians_increment) * hole_circle_radius)
file_text += G.G0_XY((x, y))
return file_text
def bore_tabbed_ID(Z_safe, stock_thickness, cut_per_pass, tab_thickness,
cutter_diameter, circle_diameter, tab_width):
""" Cut three tabs."""
assert tab_thickness <= cut_per_pass, "script not set to handle cut_per_pass when it's less than tab thickness"
off_set = (circle_diameter - cutter_diameter) / 2.0
path_length = math.pi * off_set * 2
# NOTE: radius = off_set, path_length is circumference of the circle that the cutter will be tracing
assert path_length > 6.0 * (
tab_width +
cutter_diameter), "tabs and/or bit are too large for the circle to cut"
# gap_radians is the gap (in radians) between the start and stop of each pair of cuts
gap_radians = (cutter_diameter + tab_width) / off_set
# file_text = "% cutting bore_tabbed_ID \n"
file_text = G.set_ABS_mode()
file_text += G.G0_Z(Z_safe)
# XY-plane move to starting point, creating the first tab
# at approximately 180 degrees
file_text += G.set_INCR_mode()
x = -math.cos(gap_radians) * off_set
y = math.sin(gap_radians) * off_set
file_text += G.G0_XY((x, y))
file_text += G.set_ABS_mode()
# 1 G2 cut after the first tab
file_text += G.G1_Z(0)
x = (math.cos(gap_radians) + math.cos(math.pi / 3.0)) * off_set
y = (-math.sin(gap_radians) + math.sin((2 * math.pi) / 3.0)) * off_set
i = math.cos(gap_radians) * off_set
j = -math.sin(gap_radians) * off_set
file_text += G.G2XY_to_INCR_FULL((x, y), (i, j))
# 2 G2 create the second tab
# at approximately 60 degrees
file_text += G.G0_Z(tab_thickness)
x = (math.cos((math.pi / 3.0) - gap_radians) -
math.cos(math.pi / 3.0)) * off_set
y = (math.sin((math.pi / 3.0) - gap_radians) -
math.sin(math.pi / 3.0)) * off_set
i = -math.cos(math.pi / 3.0) * off_set
j = -math.sin(math.pi / 3.0) * off_set
file_text += G.G2XY_to_INCR_FULL((x, y), (i, j))
# 3 G2 cut after the second tab
file_text += G.set_ABS_mode()
file_text += G.G1_Z(0)
x = 0
y = -2 * math.sin((math.pi / 3.0) - gap_radians) * off_set
i = -math.cos((math.pi / 3.0) - gap_radians) * off_set
j = -math.sin((math.pi / 3.0) - gap_radians) * off_set
file_text += G.G2XY_to_INCR_FULL((x, y), (i, j))
# 4 G2 create the third tab
file_text += G.G0_Z(tab_thickness)
x = -(math.cos(
(math.pi / 3.0) - gap_radians) - math.cos(math.pi / 3.0)) * off_set
y = (math.sin((math.pi / 3.0) - gap_radians) -
math.sin(math.pi / 3.0)) * off_set
i = -math.cos((math.pi / 3.0) - gap_radians) * off_set
j = math.sin((math.pi / 3.0) - gap_radians) * off_set
file_text += G.G2XY_to_INCR_FULL((x, y), (i, j))
# 5 G2 cut after the third tab
file_text += G.set_ABS_mode()
file_text += G.G1_Z(0)
x = -(1 + math.cos(math.pi / 3.0)) * off_set
y = math.sin(math.pi / 3.0) * off_set
i = -math.cos(math.pi / 3.0) * off_set
j = math.sin(math.pi / 3.0) * off_set
file_text += G.G2XY_to_INCR_FULL((x, y), (i, j))
# return to Z_safe and origin
file_text += G.set_ABS_mode()
file_text += G.G0_Z(Z_safe)
file_text += G.set_INCR_mode()
file_text += G.G0_XY((off_set, 0))
return file_text