def generate(self):
"""Returns a ComponentModel."""
# prepare parameters for easier access
D = self.D
E = self.E
D1 = self.D1
E1 = self.E1
A1 = self.A1
A2 = self.A2
b = self.b
e = self.e
npx = self.npx
npy = self.npy
epad = self.epad
the = self.the
tb_s = self.tb_s
c = self.c
R1 = self.R1
R2 = self.R2
S = self.S
fp_r = self.fp_r
fp_d = self.fp_d
fp_z = self.fp_z
ef = self.ef
max_cc1 = self.max_cc1
if self.epad:
D2 = self.epad[0]
E2 = self.epad[1]
# calculated dimensions for body
A = A1 + A2
A2_t = (A2-c)/2 # body top part height
A2_b = A2_t # body bottom part height
D1_b = D1-2*tan(radians(the))*A2_b # bottom width
E1_b = E1-2*tan(radians(the))*A2_b # bottom length
D1_t1 = D1-tb_s # top part bottom width
E1_t1 = E1-tb_s # top part bottom length
D1_t2 = D1_t1-2*tan(radians(the))*A2_t # top part upper width
E1_t2 = E1_t1-2*tan(radians(the))*A2_t # top part upper length
# calculate chamfers
totpinwidthx = (npx-1)*e+b # total width of all pins on the X side
totpinwidthy = (npy-1)*e+b # total width of all pins on the Y side
cc1 = min((D1-totpinwidthx)/2., (E1-totpinwidthy)/2.) - 0.5*tb_s
cc1 = min(cc1, max_cc1)
cc = cc1/2.
def crect(wp, rw, rh, cv1, cv):
"""
Creates a rectangle with chamfered corners.
wp: workplane object
rw: rectangle width
rh: rectangle height
cv1: chamfer value for 1st corner (lower left)
cv: chamfer value for other corners
"""
points = [
(-rw/2., -rh/2.+cv1),
(-rw/2., rh/2.-cv),
(-rw/2.+cv, rh/2.),
(rw/2.-cv, rh/2.),
(rw/2., rh/2.-cv),
(rw/2., -rh/2.+cv),
(rw/2.-cv, -rh/2.),
(-rw/2.+cv1, -rh/2.),
(-rw/2., -rh/2.+cv1)
]
return wp.polyline(points)
# start drawing with case model
case = cq.Workplane(cq.Plane.XY()).workplane(offset=A1)
case = crect(case, D1_b, E1_b, cc1-(D1-D1_b)/4., cc-(D1-D1_b)/4.) # bottom edges
case = case.pushPoints([(0,0)]).workplane(offset=A2_b)
case = crect(case, D1, E1, cc1, cc) # center (lower) outer edges
case = case.pushPoints([(0,0)]).workplane(offset=c)
case = crect(case, D1,E1,cc1, cc) # center (upper) outer edges
case = crect(case, D1_t1,E1_t1, cc1-(D1-D1_t1)/4., cc-(D1-D1_t1)/4.) # center (upper) inner edges
case = case.pushPoints([(0,0)]).workplane(offset=A2_t)
cc1_t = cc1-(D1-D1_t2)/4. # this one is defined because we use it later
case = crect(case, D1_t2,E1_t2, cc1_t, cc-(D1-D1_t2)/4.) # top edges
case = case.loft(ruled=True).faces(">Z").fillet(ef)
# first pin indicator is created with a spherical pocket
sphere_r = (fp_r*fp_r/2 + fp_z*fp_z) / (2*fp_z)
sphere_z = A + sphere_r * 2 - fp_z - sphere_r
sphere_x = -D1_t2/2.+cc1_t/2.+(fp_d+fp_r)/sqrt(2)
sphere_y = -E1_t2/2.+cc1_t/2.+(fp_d+fp_r)/sqrt(2)
sphere = cq.Workplane("XY", (sphere_x, sphere_y, sphere_z)). \
sphere(sphere_r)
case = case.cut(sphere)
# calculated dimensions for pin
R1_o = R1+c # pin upper corner, outer radius
R2_o = R2+c # pin lower corner, outer radius
L = (D-D1)/2.-R1-R2-S
# Create a pin object at the center of top side.
bpin = cq.Workplane("YZ", (0,E1/2,0)). \
moveTo(-tb_s, A1+A2_b). \
line(S+tb_s, 0). \
threePointArc((S+R1/sqrt(2), A1+A2_b-R1*(1-1/sqrt(2))),
(S+R1, A1+A2_b-R1)). \
line(0, -(A1+A2_b-R1-R2_o)). \
threePointArc((S+R1+R2_o*(1-1/sqrt(2)), R2_o*(1-1/sqrt(2))),
(S+R1+R2_o, 0)). \
line(L-R2_o, 0). \
line(0, c). \
line(-(L-R2_o), 0). \
threePointArc((S+R1+R2_o-R2/sqrt(2), c+R2*(1-1/sqrt(2))),
(S+R1+R2_o-R1, c+R2)). \
lineTo(S+R1+c, A1+A2_b-R1). \
threePointArc((S+R1_o/sqrt(2), A1+A2_b+c-R1_o*(1-1/sqrt(2))),
(S, A1+A2_b+c)). \
line(-S-tb_s, 0).close().extrude(b).translate((-b/2,0,0))
pins = []
# create top, bottom side pins
first_pos = -(npx-1)*e/2
for i in range(npx):
pin = bpin.translate((first_pos+i*e, 0, 0))
pins.append(pin)
pin = bpin.translate((first_pos+i*e, 0, 0)).\
rotate((0,0,0), (0,0,1), 180)
pins.append(pin)
# create right, left side pins
first_pos = -(npy-1)*e/2
for i in range(npy):
pin = bpin.translate((first_pos+i*e, (D1-E1)/2, 0)).\
rotate((0,0,0), (0,0,1), 90)
pins.append(pin)
pin = bpin.translate((first_pos+i*e, (D1-E1)/2, 0)).\
rotate((0,0,0), (0,0,1), 270)
pins.append(pin)
# create exposed thermal pad if requested
if self.epad:
pins.append(cq.Workplane("XY").box(D2, E2, A1).translate((0,0,A1/2)))
# merge all pins to a single object
merged_pins = pins[0]
for p in pins[1:]:
merged_pins = merged_pins.union(p)
pins = merged_pins
# extract pins from case
case = case.cut(pins)
model = ComponentModel()
model.addPart(case, self.case_color, "body")
model.addPart(pins, self.pins_color, "pins")
return model
def generate(self):
# extract parameters to local namespace
D = self.D
E1 = self.E1
E = self.E
A1 = self.A1
A2 = self.A2
b1 = self.b1
b = self.b
e = self.e
npins = self.npins
L = self.L
c = self.c
fp_r = self.fp_r
fp_d = self.fp_d
fp_t = self.fp_t
ef = self.ef
ti_r = self.ti_r
ti_d = self.ti_d
the = self.the
tb_s = self.tb_s
# calculated dimensions
A = A1 + A2
A2_t = (A2 - c) / 2. # body top part height
A2_b = A2_t # body bottom part height
D_b = D - 2 * tan(radians(the)) * A2_b # bottom length
E1_b = E1 - 2 * tan(radians(the)) * A2_b # bottom width
D_t1 = D - tb_s # top part bottom length
E1_t1 = E1 - tb_s # top part bottom width
D_t2 = D_t1 - 2 * tan(radians(the)) * A2_t # top part upper length
E1_t2 = E1_t1 - 2 * tan(radians(the)) * A2_t # top part upper width
# start drawing with case
case = cq.Workplane(cq.Plane.XY()).workplane(offset=A1).rect(D_b, E1_b). \
workplane(offset=A2_b).rect(D, E1).workplane(offset=c).rect(D,E1). \
rect(D_t1,E1_t1).workplane(offset=A2_t).rect(D_t2,E1_t2). \
loft(ruled=True)
# draw top indicator
case = case.faces(">Z").center(D_b / 2., 0).hole(ti_r * 2, ti_d)
# draw 1st pin (side pin shape)
x = e * (npins / 4. - 0.5) # center x position of first pin
ty = (A2 + c) / 2. + A1 # top point (max z) of pin
# draw the side part of the pin
pin = cq.Workplane("XZ", (x, E/2., 0)).\
moveTo(+b/2., ty).line(0, -(L+ty-b)).line(-b/4.,-b).line(-b/2.,0).\
line(-b/4.,b).line(0,L-b).line(-(b1-b)/2.,0).line(0,ty).close().extrude(c)
# draw the top part of the pin
pin = pin.faces(">Z").workplane().center(-(b1+b)/4.,c/2.).\
rect((b1+b)/2.,-E/2.,centered=False).extrude(-c)
# fillet the corners
def fillet_corner(pina):
BS = cq.selectors.BoxSelector
return pina.edges(BS((1000, E/2.-c-0.001, ty-c-0.001), (-1000, E/2.-c+0.001, ty-c+0.001))).\
fillet(c/2.).\
edges(BS((1000, E/2.-0.001, ty-0.001), (-1000, E/2.+0.001, ty+0.001))).\
fillet(1.5*c)
pin = fillet_corner(pin)
# draw the 2nd pin (regular pin shape)
x = e * (npins / 4. - 0.5 - 1) # center x position of 2nd pin
pin2 = cq.Workplane("XZ", (x, E/2., 0)).\
moveTo(b1/2., ty).line(0, -ty).line(-(b1-b)/2.,0).line(0,-L+b).\
line(-b/4.,-b).line(-b/2.,0).line(-b/4.,b).line(0,L-b).\
line(-(b1-b)/2.,0).line(0,ty).\
close().extrude(c)
# draw the top part of the pin
pin2 = pin2.faces(">Z").workplane().center(0, -E / 4.).rect(
b1, -E / 2.).extrude(-c)
pin2 = fillet_corner(pin2)
# create other pins (except last one)
pins = [pin, pin2]
for i in range(2, npins / 2 - 1):
pin_i = pin2.translate((-e * (i - 1), 0, 0))
pins.append(pin_i)
# create last pin (mirrored 1st pin)
x = -e * (npins / 4. - 0.5)
pinl = cq.Workplane("XZ", (x, E/2., 0)).\
moveTo(-b/2., ty).line(0, -(L+ty-b)).line(b/4.,-b).line(b/2.,0).\
line(b/4.,b).line(0,L-b).line((b1-b)/2.,0).line(0,ty).close().\
extrude(c).\
faces(">Z").workplane().center(-(b1+b)/4.,c/2.).\
rect((b1+b)/2.,-E/2.,centered=False).extrude(-c)
pinl = fillet_corner(pinl)
pins.append(pinl)
def union_all(objects):
o = objects[0]
for i in range(1, len(objects)):
o = o.union(objects[i])
return o
# union all pins
pins = union_all(pins)
# create other side of the pins (mirror would be better but there
# is no solid mirror API)
pins = pins.union(pins.rotate((0, 0, 0), (0, 0, 1), 180))
# finishing touches
BS = cq.selectors.BoxSelector
case = case.edges(
BS((D_t2 / 2. + 0.1, E1_t2 / 2., 0),
(D / 2. + 0.1, E1 / 2. + 0.1, A2))).fillet(ef)
case = case.edges(
BS((-D_t2 / 2., E1_t2 / 2., 0),
(-D / 2. - 0.1, E1 / 2. + 0.1, A2))).fillet(ef)
case = case.edges(
BS((-D_t2 / 2., -E1_t2 / 2., 0),
(-D / 2. - 0.1, -E1 / 2. - 0.1, A2))).fillet(ef)
case = case.edges(
BS((D_t2 / 2., -E1_t2 / 2., 0),
(D / 2. + 0.1, -E1 / 2. - 0.1, A2))).fillet(ef)
case = case.edges(
BS((D / 2., E1 / 2., A - ti_d - 0.001),
(-D / 2., -E1 / 2., A + 0.1))).fillet(ef)
# add first pin indicator
case = case.faces(">Z").workplane().center(D_t2/2.-fp_r-fp_t,E1_t2/2.-fp_r-fp_t).\
hole(fp_r*2, fp_d)
# extract pins from the case
case = case.cut(pins)
model = ComponentModel()
model.addPart(case, self.case_color, "body")
model.addPart(pins, self.pins_color, "pins")
return model
def generate(self):
# extract parameters to local namespace
D = self.D
E1 = self.E1
E = self.E
A1 = self.A1
A2 = self.A2
b1 = self.b1
b = self.b
e = self.e
npins = self.npins
L = self.L
c = self.c
fp_r = self.fp_r
fp_d = self.fp_d
fp_t = self.fp_t
ef = self.ef
ti_r = self.ti_r
ti_d = self.ti_d
the = self.the
tb_s = self.tb_s
# calculated dimensions
A = A1 + A2
A2_t = (A2 - c) / 2.0 # body top part height
A2_b = A2_t # body bottom part height
D_b = D - 2 * tan(radians(the)) * A2_b # bottom length
E1_b = E1 - 2 * tan(radians(the)) * A2_b # bottom width
D_t1 = D - tb_s # top part bottom length
E1_t1 = E1 - tb_s # top part bottom width
D_t2 = D_t1 - 2 * tan(radians(the)) * A2_t # top part upper length
E1_t2 = E1_t1 - 2 * tan(radians(the)) * A2_t # top part upper width
# start drawing with case
case = (
cq.Workplane(cq.Plane.XY())
.workplane(offset=A1)
.rect(D_b, E1_b)
.workplane(offset=A2_b)
.rect(D, E1)
.workplane(offset=c)
.rect(D, E1)
.rect(D_t1, E1_t1)
.workplane(offset=A2_t)
.rect(D_t2, E1_t2)
.loft(ruled=True)
)
# draw top indicator
case = case.faces(">Z").center(D_b / 2.0, 0).hole(ti_r * 2, ti_d)
# draw 1st pin (side pin shape)
x = e * (npins / 4.0 - 0.5) # center x position of first pin
ty = (A2 + c) / 2.0 + A1 # top point (max z) of pin
# draw the side part of the pin
pin = (
cq.Workplane("XZ", (x, E / 2.0, 0))
.moveTo(+b / 2.0, ty)
.line(0, -(L + ty - b))
.line(-b / 4.0, -b)
.line(-b / 2.0, 0)
.line(-b / 4.0, b)
.line(0, L - b)
.line(-(b1 - b) / 2.0, 0)
.line(0, ty)
.close()
.extrude(c)
)
# draw the top part of the pin
pin = (
pin.faces(">Z")
.workplane()
.center(-(b1 + b) / 4.0, c / 2.0)
.rect((b1 + b) / 2.0, -E / 2.0, centered=False)
.extrude(-c)
)
# fillet the corners
def fillet_corner(pina):
BS = cq.selectors.BoxSelector
return (
pina.edges(
BS((1000, E / 2.0 - c - 0.001, ty - c - 0.001), (-1000, E / 2.0 - c + 0.001, ty - c + 0.001))
)
.fillet(c / 2.0)
.edges(BS((1000, E / 2.0 - 0.001, ty - 0.001), (-1000, E / 2.0 + 0.001, ty + 0.001)))
.fillet(1.5 * c)
)
pin = fillet_corner(pin)
# draw the 2nd pin (regular pin shape)
x = e * (npins / 4.0 - 0.5 - 1) # center x position of 2nd pin
pin2 = (
cq.Workplane("XZ", (x, E / 2.0, 0))
.moveTo(b1 / 2.0, ty)
.line(0, -ty)
.line(-(b1 - b) / 2.0, 0)
.line(0, -L + b)
.line(-b / 4.0, -b)
.line(-b / 2.0, 0)
.line(-b / 4.0, b)
.line(0, L - b)
.line(-(b1 - b) / 2.0, 0)
.line(0, ty)
.close()
.extrude(c)
)
# draw the top part of the pin
pin2 = pin2.faces(">Z").workplane().center(0, -E / 4.0).rect(b1, -E / 2.0).extrude(-c)
pin2 = fillet_corner(pin2)
# create other pins (except last one)
pins = [pin, pin2]
for i in range(2, npins / 2 - 1):
pin_i = pin2.translate((-e * (i - 1), 0, 0))
pins.append(pin_i)
# create last pin (mirrored 1st pin)
x = -e * (npins / 4.0 - 0.5)
pinl = (
cq.Workplane("XZ", (x, E / 2.0, 0))
.moveTo(-b / 2.0, ty)
.line(0, -(L + ty - b))
.line(b / 4.0, -b)
.line(b / 2.0, 0)
.line(b / 4.0, b)
.line(0, L - b)
.line((b1 - b) / 2.0, 0)
.line(0, ty)
.close()
.extrude(c)
.faces(">Z")
.workplane()
.center(-(b1 + b) / 4.0, c / 2.0)
.rect((b1 + b) / 2.0, -E / 2.0, centered=False)
.extrude(-c)
)
pinl = fillet_corner(pinl)
pins.append(pinl)
def union_all(objects):
o = objects[0]
for i in range(1, len(objects)):
o = o.union(objects[i])
return o
# union all pins
pins = union_all(pins)
# create other side of the pins (mirror would be better but there
# is no solid mirror API)
pins = pins.union(pins.rotate((0, 0, 0), (0, 0, 1), 180))
# finishing touches
BS = cq.selectors.BoxSelector
case = case.edges(BS((D_t2 / 2.0 + 0.1, E1_t2 / 2.0, 0), (D / 2.0 + 0.1, E1 / 2.0 + 0.1, A2))).fillet(ef)
case = case.edges(BS((-D_t2 / 2.0, E1_t2 / 2.0, 0), (-D / 2.0 - 0.1, E1 / 2.0 + 0.1, A2))).fillet(ef)
case = case.edges(BS((-D_t2 / 2.0, -E1_t2 / 2.0, 0), (-D / 2.0 - 0.1, -E1 / 2.0 - 0.1, A2))).fillet(ef)
case = case.edges(BS((D_t2 / 2.0, -E1_t2 / 2.0, 0), (D / 2.0 + 0.1, -E1 / 2.0 - 0.1, A2))).fillet(ef)
case = case.edges(BS((D / 2.0, E1 / 2.0, A - ti_d - 0.001), (-D / 2.0, -E1 / 2.0, A + 0.1))).fillet(ef)
# add first pin indicator
case = (
case.faces(">Z")
.workplane()
.center(D_t2 / 2.0 - fp_r - fp_t, E1_t2 / 2.0 - fp_r - fp_t)
.hole(fp_r * 2, fp_d)
)
# extract pins from the case
case = case.cut(pins)
model = ComponentModel()
model.addPart(case, self.case_color, "body")
model.addPart(pins, self.pins_color, "pins")
return model
def generate(self):
"""Returns a ComponentModel."""
# prepare parameters for easier access
D = self.D
E = self.E
D1 = self.D1
E1 = self.E1
A1 = self.A1
A2 = self.A2
b = self.b
e = self.e
npx = self.npx
npy = self.npy
epad = self.epad
the = self.the
tb_s = self.tb_s
c = self.c
R1 = self.R1
R2 = self.R2
S = self.S
fp_r = self.fp_r
fp_d = self.fp_d
fp_z = self.fp_z
ef = self.ef
max_cc1 = self.max_cc1
if self.epad:
D2 = self.epad[0]
E2 = self.epad[1]
# calculated dimensions for body
A = A1 + A2
A2_t = (A2 - c) / 2 # body top part height
A2_b = A2_t # body bottom part height
D1_b = D1 - 2 * tan(radians(the)) * A2_b # bottom width
E1_b = E1 - 2 * tan(radians(the)) * A2_b # bottom length
D1_t1 = D1 - tb_s # top part bottom width
E1_t1 = E1 - tb_s # top part bottom length
D1_t2 = D1_t1 - 2 * tan(radians(the)) * A2_t # top part upper width
E1_t2 = E1_t1 - 2 * tan(radians(the)) * A2_t # top part upper length
# calculate chamfers
totpinwidthx = (npx -
1) * e + b # total width of all pins on the X side
totpinwidthy = (npy -
1) * e + b # total width of all pins on the Y side
cc1 = min((D1 - totpinwidthx) / 2.,
(E1 - totpinwidthy) / 2.) - 0.5 * tb_s
cc1 = min(cc1, max_cc1)
cc = cc1 / 2.
def crect(wp, rw, rh, cv1, cv):
"""
Creates a rectangle with chamfered corners.
wp: workplane object
rw: rectangle width
rh: rectangle height
cv1: chamfer value for 1st corner (lower left)
cv: chamfer value for other corners
"""
points = [(-rw / 2., -rh / 2. + cv1), (-rw / 2., rh / 2. - cv),
(-rw / 2. + cv, rh / 2.), (rw / 2. - cv, rh / 2.),
(rw / 2., rh / 2. - cv), (rw / 2., -rh / 2. + cv),
(rw / 2. - cv, -rh / 2.), (-rw / 2. + cv1, -rh / 2.),
(-rw / 2., -rh / 2. + cv1)]
return wp.polyline(points)
# start drawing with case model
case = cq.Workplane(cq.Plane.XY()).workplane(offset=A1)
case = crect(case, D1_b, E1_b, cc1 - (D1 - D1_b) / 4.,
cc - (D1 - D1_b) / 4.) # bottom edges
case = case.pushPoints([(0, 0)]).workplane(offset=A2_b)
case = crect(case, D1, E1, cc1, cc) # center (lower) outer edges
case = case.pushPoints([(0, 0)]).workplane(offset=c)
case = crect(case, D1, E1, cc1, cc) # center (upper) outer edges
case = crect(case, D1_t1, E1_t1, cc1 - (D1 - D1_t1) / 4.,
cc - (D1 - D1_t1) / 4.) # center (upper) inner edges
case = case.pushPoints([(0, 0)]).workplane(offset=A2_t)
cc1_t = cc1 - (
D1 - D1_t2) / 4. # this one is defined because we use it later
case = crect(case, D1_t2, E1_t2, cc1_t,
cc - (D1 - D1_t2) / 4.) # top edges
case = case.loft(ruled=True).faces(">Z").fillet(ef)
# first pin indicator is created with a spherical pocket
sphere_r = (fp_r * fp_r / 2 + fp_z * fp_z) / (2 * fp_z)
sphere_z = A + sphere_r * 2 - fp_z - sphere_r
sphere_x = -D1_t2 / 2. + cc1_t / 2. + (fp_d + fp_r) / sqrt(2)
sphere_y = -E1_t2 / 2. + cc1_t / 2. + (fp_d + fp_r) / sqrt(2)
sphere = cq.Workplane("XY", (sphere_x, sphere_y, sphere_z)). \
sphere(sphere_r)
case = case.cut(sphere)
# calculated dimensions for pin
R1_o = R1 + c # pin upper corner, outer radius
R2_o = R2 + c # pin lower corner, outer radius
L = (D - D1) / 2. - R1 - R2 - S
# Create a pin object at the center of top side.
bpin = cq.Workplane("YZ", (0,E1/2,0)). \
moveTo(-tb_s, A1+A2_b). \
line(S+tb_s, 0). \
threePointArc((S+R1/sqrt(2), A1+A2_b-R1*(1-1/sqrt(2))),
(S+R1, A1+A2_b-R1)). \
line(0, -(A1+A2_b-R1-R2_o)). \
threePointArc((S+R1+R2_o*(1-1/sqrt(2)), R2_o*(1-1/sqrt(2))),
(S+R1+R2_o, 0)). \
line(L-R2_o, 0). \
line(0, c). \
line(-(L-R2_o), 0). \
threePointArc((S+R1+R2_o-R2/sqrt(2), c+R2*(1-1/sqrt(2))),
(S+R1+R2_o-R1, c+R2)). \
lineTo(S+R1+c, A1+A2_b-R1). \
threePointArc((S+R1_o/sqrt(2), A1+A2_b+c-R1_o*(1-1/sqrt(2))),
(S, A1+A2_b+c)). \
line(-S-tb_s, 0).close().extrude(b).translate((-b/2,0,0))
pins = []
# create top, bottom side pins
first_pos = -(npx - 1) * e / 2
for i in range(npx):
pin = bpin.translate((first_pos + i * e, 0, 0))
pins.append(pin)
pin = bpin.translate((first_pos+i*e, 0, 0)).\
rotate((0,0,0), (0,0,1), 180)
pins.append(pin)
# create right, left side pins
first_pos = -(npy - 1) * e / 2
for i in range(npy):
pin = bpin.translate((first_pos+i*e, (D1-E1)/2, 0)).\
rotate((0,0,0), (0,0,1), 90)
pins.append(pin)
pin = bpin.translate((first_pos+i*e, (D1-E1)/2, 0)).\
rotate((0,0,0), (0,0,1), 270)
pins.append(pin)
# create exposed thermal pad if requested
if self.epad:
pins.append(
cq.Workplane("XY").box(D2, E2, A1).translate((0, 0, A1 / 2)))
# merge all pins to a single object
merged_pins = pins[0]
for p in pins[1:]:
merged_pins = merged_pins.union(p)
pins = merged_pins
# extract pins from case
case = case.cut(pins)
model = ComponentModel()
model.addPart(case, self.case_color, "body")
model.addPart(pins, self.pins_color, "pins")
return model
def generate(self):
"""Returns a ComponentModel."""
b = cq.Workplane("XY").box(self.l, self.w, self.h)
model = ComponentModel()
model.addPart(b, self.color, "Body")
return model
def generate(self):
D = self.D
E = self.E
A = self.A
A1 = self.A1
b = self.b
e = self.e
npx = self.npx
npy = self.npy
A3 = self.A3
L = self.L
ef = self.ef
fp_r = self.fp_r
fp_d = self.fp_d
fp_t = self.fp_t
ecc = self.ecc
if self.epad:
if type(self.epad) == tuple:
D2 = self.epad[0]
E2 = self.epad[1]
else: # assuming type(self.epad) float or int
E2 = D2 = self.epad
if self.flanged:
D1 = self.D1
E1 = self.E1
the = self.the
P = self.P
# calculated dimensions
A2 = A - A1
# draw the case
cw = D-A1*2
cl = E-A1*2
if not self.flanged: # standard simple box style case
case = cq.Workplane("XY").workplane(offset=A1). \
box(cw, cl, A2, centered=(True,True,False)) # margin (A1) to see fused pins
case = case.edges("|Z").fillet(ef)
case = case.faces(">Z").fillet(ef)
# draw first pin indicator
fp_x = -(cw/2)+fp_t+fp_r
fp_y = -(cl/2)+fp_t+fp_r
case = case.faces(">Z").workplane().center(fp_x, fp_y).hole(fp_r*2, fp_d)
else: # molded case type
D1_t = D1-2*tan(radians(the))*(A-A3)
E1_t = E1-2*tan(radians(the))*(A-A3)
case = cq.Workplane("XY").workplane(offset=A1)
case = crect(case, cw, cl, P, P)
case = case.extrude(A3-A1)
case = case.faces(">Z").workplane()
case = crect(case, D1, E1, P*0.8, P*0.8).\
workplane(offset=A-A3)
case = crect(case, D1_t, E1_t, P*0.6, P*0.6).\
loft(ruled=True)
# fillet the bottom vertical edges
case = case.edges("|Z").fillet(ef)
# fillet top and side faces of the top molded part
BS = cq.selectors.BoxSelector
case = case.edges(BS((-D1/2, -E1/2, A3+0.001), (D1/2, E1/2, A+0.001))).fillet(ef)
# draw first pin indicator
fp_x = -(D1_t/2)+fp_t+fp_r
fp_y = -(E1_t/2)+fp_t+fp_r
case = case.faces(">Z").workplane().center(fp_x, fp_y).hole(fp_r*2, fp_d)
# draw pins
bpin = cq.Workplane("XY").\
moveTo(b, 0). \
lineTo(b, L-b/2). \
threePointArc((b/2,L),(0, L-b/2)). \
lineTo(0, 0). \
close().extrude(A3).translate((b/2,E/2,0)). \
rotate((b/2,E/2,0), (0,0,1), 180)
pins = []
# create top and bottom side pins
first_pos = -(npx-1)*e/2
for i in range(npx):
pin = bpin.translate((first_pos+i*e, 0, 0))
pins.append(pin)
pin = bpin.translate((first_pos+i*e, 0, 0)).\
rotate((0,0,0), (0,0,1), 180)
pins.append(pin)
# create right and left side pins
for i in range(npy):
pin = bpin.translate((first_pos+i*e, (D-E)/2, 0)).\
rotate((0,0,0), (0,0,1), 90)
pins.append(pin)
pin = bpin.translate((first_pos+i*e, (D-E)/2, 0)).\
rotate((0,0,0), (0,0,1), 270)
pins.append(pin)
# draw exposed pad
if self.epad:
#pins.append(cq.Workplane("XY").box(D2, E2, A1+A1/10).translate((0,0,A1+A1/10)))
epad = cq.Workplane("XY"). \
moveTo(-D2/2+ecc, -E2/2). \
lineTo(D2/2, -E2/2). \
lineTo(D2/2, E2/2). \
lineTo(-D2/2, E2/2). \
lineTo(-D2/2, -E2/2+ecc). \
close().extrude(A1)
pins.append(epad)
# merge all pins to a single object
merged_pins = pins[0]
for p in pins[1:]:
merged_pins = merged_pins.union(p)
pins = merged_pins
# extract pins from case
case = case.cut(pins)
model = ComponentModel()
model.addPart(case, self.case_color, "body")
model.addPart(pins, self.pins_color, "pins")
return model
lineTo(D2/2, E2/2). \
lineTo(-D2/2, E2/2). \
lineTo(-D2/2, -E2/2+ecc). \
close().extrude(A1)
pins.append(epad)
# merge all pins to a single object
merged_pins = pins[0]
for p in pins[1:]:
merged_pins = merged_pins.union(p)
pins = merged_pins
# extract pins from case
case = case.cut(pins)
model = ComponentModel()
model.addPart(case, self.case_color, "body")
model.addPart(pins, self.pins_color, "pins")
return model
class QFNGen(BaseQFNGen):
def __init__(self, D, E, A, A1, b, e, np, epad):
BaseQFNGen.__init__(self, D, E, A, A1, b, e, np / 4, np / 4, epad)
class MQFNGen(BaseQFNGen):
def __init__(self, D, E, D1, E1, A, A1, P, b, e, np, epad):
BaseQFNGen.__init__(self,
D,
def generate(self):
L = self.L # overall height of the body
D = self.D # body diameter
d = self.d # lead diameter
F = self.F # lead separation (center to center)
ll = self.ll # lead length
la = self.la # extra lead length of the anode
bs = self.bs # board separation
bt = self.bt # flat part before belt
bd = self.bd # depth of the belt
bh = self.bh # height of the belt
bf = self.bf # belt fillet
tc = self.tc # cut thickness for the bottom
dc = self.dc # diameter of the bottom cut
ts = self.ts # thickness of the slots at the top in the shape of (+)
ws = self.ws # width of the slots
ef = self.ef # top and bottom edges fillet
bpt = 0.1 # bottom plastic thickness (not visual)
tmt = ts*2 # top metallic part thickness (not visual)
# TODO: calculate width of the cathode marker bar from the body size
ciba = 45. # angle of the cathode identification bar
# TODO: calculate marker sizes according to the body size
mmb_h = 2. # lenght of the (-) marker on the cathode bar
mmb_w = 0.5 # rough width of the marker
ef_s2 = ef/sqrt(2)
ef_x = ef-ef/sqrt(2)
def bodyp():
return cq.Workplane("XZ").move(0, bs).\
move(0, tc+bpt).\
line(dc/2., 0).\
line(0, -(tc+bpt)).\
line(D/2.-dc/2.-ef, 0).\
threePointArc((D/2.-(ef_x), bs+(ef_x)), (D/2., bs+ef)).\
line(0, bt).\
threePointArc((D/2.-bd, bs+bt+bh/2.), (D/2., bs+bt+bh)).\
lineTo(D/2., L+bs-ef).\
threePointArc((D/2.-(ef_x), L+bs-(ef_x)), (D/2.-ef, L+bs)).\
lineTo(dc/2., L+bs).\
line(0, -(tc+tmt)).\
line(-dc/2., 0).\
close()
body = bodyp().revolve(360-ciba, (0,0,0), (0,1,0))
bar = bodyp().revolve(ciba, (0,0,0), (0,1,0))
# # fillet the belt edges
BS = cq.selectors.BoxSelector
# note that edges are selected from their centers
body = body.edges(BS((-0.5,-0.5, bs+bt-0.01), (0.5, 0.5, bs+bt+bh+0.01))).\
fillet(bf)
b_r = D/2.-bd # inner radius of the belt
bar = bar.edges(BS((b_r/sqrt(2), 0, bs+bt-0.01),(b_r, -b_r/sqrt(2), bs+bt+bh+0.01))).\
fillet(bf)
body = body.rotate((0,0,0), (0,0,1), 180-ciba/2)
bar = bar.rotate((0,0,0), (0,0,1), 180+ciba/2)
# draw the plastic at the bottom
bottom = cq.Workplane("XY").workplane(offset=bs+tc).\
circle(dc/2).extrude(bpt)
# draw the metallic part at the top
top = cq.Workplane("XY").workplane(offset=bs+L-tc-ts).\
circle(dc/2).extrude(tmt)
# draw the slots on top in the shape of plus (+)
top = top.faces(">Z").workplane().move(ws/2,ws/2).\
line(0,D).line(-ws,0).line(0,-D).\
line(-D,0).line(0,-ws).line(D,0).\
line(0,-D).line(ws,0).line(0,D).\
line(D,0).line(0,ws).close().cutBlind(-ts)
# draw the (-) marks on the bar
n = int(L/(2*mmb_h)) # number of (-) marks to draw
points = []
first_z = (L-(2*n-1)*mmb_h)/2
for i in range(n):
points.append((0, (i+0.25)*2*mmb_h+first_z))
mmb = cq.Workplane("YZ", (-D/2,0,bs)).pushPoints(points).\
box(mmb_w, mmb_h, 2).\
edges("|X").fillet(mmb_w/2.-0.001)
mmb = mmb.cut(mmb.translate((0,0,0)).cut(bar))
bar = bar.cut(mmb)
# draw the leads
leads = cq.Workplane("XY").workplane(offset=bs+tc).\
center(-F/2,0).circle(d/2).extrude(-(ll+tc)).\
center(F,0).circle(d/2).extrude(-(ll+tc+la))
model = ComponentModel()
model.addPart(body, self.body_color, "body")
model.addPart(mmb, self.body_color, "marks")
model.addPart(top, self.top_color, "top")
model.addPart(bottom, self.bottom_color, "bottom")
model.addPart(bar, self.bar_color, "bar")
model.addPart(leads, self.lead_color, "pins")
return model
def generate(self):
L = self.L # overall height
D = self.D # diameter
A = self.A # base width (x&y)
H = self.H # max width (x) with pins
P = self.P # distance between pins
W = self.W # pin width
c = self.c # pin thickness
bh = self.bh # belt start height
br = self.br # belt radius
bf = self.bf # belt fillet
D2 = self.D2 # cut diameter
h1 = self.h1 # bottom plastic height, cathode side
h2 = self.h2 # bottom plastic base height, mid side
h3 = self.h3 # bottom plastic height, anode side
cf = self.cf # cathode side corner fillet
ac = self.ac # anode side chamfer
ef = self.ef
cimw = D/2.*0.7 # cathode identification mark width
# draw aluminium the body
body = cq.Workplane("XZ", (0,0,c+h2)).\
lineTo(D/2., 0).\
line(0, bh).\
threePointArc((D/2.-br, bh+br), (D/2., bh+2*br)).\
lineTo(D/2., L-c-h2).\
line(-D/2, 0).\
close().revolve()
# fillet the belt edges
BS = cq.selectors.BoxSelector
body = body.edges(BS((-0.1,-0.1,c+h2+0.1), (0.1,0.1,L-0.1))).\
fillet(bf)
# fillet the top and bottom
body = body.faces(">Z").fillet(ef).\
faces("<Z").fillet(ef)
# draw the plastic base
base = cq.Workplane("XY", (0,0,c)).\
moveTo(-A/2.,-A/2.).\
line(A-ac, 0).\
line(ac, ac).\
line(0, A-2*ac).\
line(-ac, ac).\
line(-A+ac, 0).\
close().extrude(h1)
# fillet cathode side
base = base.edges(BS((-A,-A,0), (-A/2.+0.01,-A/2.+0.01,c+h1+0.01))).\
fillet(cf).\
edges(BS((-A,A,0), (-A/2.+0.01,A/2.-0.01,c+h1+0.01))).\
fillet(cf)
# cut base center
base = base.cut(
cq.Workplane("XY", (0,0,c+h2)).\
circle(D2/2.).extrude(h1-h2))
# cut anode side of the base
base = base.cut(
cq.Workplane("XY", (0,-A/2.,c+h3)).\
box(A/2., A, h1-h3, centered=(False, False, False)))
# draw pins
pins = cq.Workplane("XY").\
moveTo(H/2., -W/2.).\
line(0, W).\
lineTo(P/2.+W/2., W/2.).\
threePointArc((P/2.,0), (P/2.+W/2., -W/2)).\
close().extrude(c)
pins = pins.union(pins.rotate((0,0,0), (0,0,1), 180))
# draw the cathode identification mark
cim = cq.Workplane("XY", (-D/2.,0,L-ef)).\
box(cimw, D, ef, centered=(False, True, False))
# do intersection
cim = cim.cut(cim.translate((0,0,0)).cut(body))
body.cut(cim)
model = ComponentModel()
model.addPart(body, self.body_color, "body")
model.addPart(base, self.base_color, "base")
model.addPart(pins, self.body_color, "pins")
model.addPart(cim, (0.,0.,0.), "mark")
return model
def generate(self):
"""Returns a ComponentModel."""
b = cq.Workplane("XY").box(self.l, self.w, self.h)
model = ComponentModel()
model.addPart(b, self.color, "Body")
return model