def heat_set_insert(diameter, depth, excess_diameter, excess_depth, taper_angle_degrees = 8, negative_depth=0, negative_diameter=None):
"""
taper angle is going to specify the deflection off of zero s.t. the diameter is slightly less
as you move closer to the bottom. The taper angle specifies the slope of the line off of the
radial axis. The excess parameters are for a smaller hole that collects the melted material, so that it's not the same size as the portion that bonds to the insert.
negative_depth creates material of exactly diameter but the hole, to create a path to move the insert
during assembly and provide screwdriver access. If negative_diameter is specified, that's used instead of the insert hole diameter.
"""
top_radius = diameter / 2.0
if taper_angle_degrees == 0:
bottom_radius = diameter / 2.0
else:
bottom_radius = diameter/2.0 - tan(taper_angle_degrees * pi / 180) * depth / 2.0
negative_hole = None
if negative_depth != 0:
if negative_diameter is None:
negative_radius = diameter / 2.0
else:
negative_radius = negative_diameter / 2.0
negative_hole = so.translate((0,0,-negative_depth - 0.01))(so.cylinder(r=negative_radius, h=negative_depth + 0.01))
insert_hole = so.translate((0,0,-0.01))(so.cylinder(r1=top_radius, r2=bottom_radius, h=depth + 0.01))
excess_hole = so.translate((0,0,depth - 0.01))(so.cylinder(r=excess_diameter / 2.0, h=excess_depth + 0.01))
total = insert_hole + excess_hole
if negative_hole is not None:
total += negative_hole
return total
def basic_geometry():
# SolidPython code can look a lot like OpenSCAD code. It also has
# some syntactic sugar built in that can make it look more pythonic.
# Here are two identical pieces of geometry, one left and one right.
# left_piece uses standard OpenSCAD grammar (note the commas between
# block elements; OpenSCAD doesn't require this)
left_piece = union()(translate((-15, 0, 0))(cube([10, 5, 3], center=True)),
translate(
(-10, 0, 0))(difference()(cylinder(r=5,
h=15,
center=True),
cylinder(r=4,
h=16,
center=True))))
# Right piece uses a more Pythonic grammar. + (plus) is equivalent to union(),
# - (minus) is equivalent to difference() and * (star) is equivalent to intersection
# solid.utils also defines up(), down(), left(), right(), forward(), and back()
# for common transforms.
right_piece = right(15)(cube([10, 5, 3], center=True))
cyl = cylinder(r=5, h=15, center=True) - cylinder(r=4, h=16, center=True)
right_piece += right(10)(cyl)
return union()(left_piece, right_piece)
def pulley_arms(height=40, through_screw='m4', arm_width=15, arm_thickness=7.5, pully_width=10, base_width=30, base_thickness=10, spin_clearance=0.5):
arm_base = so.translate((0,-arm_width/2.0,0))(so.cube((arm_thickness, arm_width, 1)))
arm = so.hull()(so.translate((0,0,height-arm_width/2.0))(so.rotate((0,90,0))(so.cylinder(r=arm_width/2.0, h=arm_thickness))) + arm_base)
def arms_xf_left(obj):
return so.translate(((pully_width + spin_clearance)/2.0,0,0))(obj)
def arms_xf_right(obj):
return so.translate((-(pully_width + spin_clearance)/2.0,0,0))(so.rotate((0,0,180))(obj))
arms = arms_xf_left(arm) + arms_xf_right(arm)
plate_orig = so.translate((-base_width/2.0,-base_width/2.0,-base_thickness))(so.cube((base_width, base_width, base_thickness)))
plate = so.hull()(plate_orig, so.translate((0,0,base_thickness/2.0))(arms_xf_left(arm_base)))
plate += so.hull()(plate_orig, so.translate((0,0,base_thickness/2.0))(arms_xf_right(arm_base)))
# add mount holes
spacing = arm_thickness*2.0+pully_width
bolt_hole = so.rotate((0,90,0))(so.translate((0,0,-spacing))(so.cylinder(r=screw_clearance[through_screw]/2.0, h=spacing*2.0)))
nut_recess = so.translate((-spacing/2.0,0,0))(so.rotate((0,90,0))(hex(screw_nut[through_screw]['width'], screw_nut[through_screw]['depth'])))
bolt_hole += nut_recess
head_recess = so.translate((spacing/2.0,0,0))(so.rotate((0,-90,0))(so.cylinder(r=screw_head_sink[through_screw]['diameter']/2.0, h=screw_head_sink[through_screw]['h'])))
bolt_hole += head_recess
arms -= so.translate((0,0,height-arm_width/2.0))(bolt_hole)
# add base mount hole
head_recess = so.translate((0,0,-5))(so.cylinder(r=screw_head_sink[through_screw]['diameter']/2.0, h=screw_head_sink[through_screw]['h']*base_thickness))
bolt_hole = so.translate((0,0,-base_thickness))(so.cylinder(r=screw_clearance[through_screw]/2.0, h=base_thickness*2.0))
bolt_hole += head_recess
return arms + plate - bolt_hole
def multipart_hole():
# It's good to be able to keep holes empty, but often we want to put
# things (bolts, etc.) in them. The way to do this is to declare the
# object containing the hole a "part". Then, the hole will remain
# empty no matter what you add to the 'part'. But if you put an object
# that is NOT part of the 'part' into the hole, it will still appear.
# On the left (not_part), here's what happens if we try to put an object
# into an explicit hole: the object gets erased by the hole.
# On the right (is_part), we mark the cube-with-hole as a "part",
# and then insert the same 'bolt' cylinder into it. The entire
# bolt rematins.
b = cube(10, center=True)
c = cylinder(r=2, h=12, center=True)
# A cube with an explicit hole
not_part = b - hole()(c)
# Mark this cube-with-hole as a separate part from the cylinder
is_part = part()(not_part.copy())
# This fits in the holes
bolt = cylinder(r=1.5, h=14, center=True) + up(8)(cylinder(
r=2.5, h=2.5, center=True))
# The section of the bolt inside not_part disappears. The section
# of the bolt inside is_part is still there.
return not_part + bolt + right(45)(is_part + bolt)
def lasershim(height):
"""lasershim
This is a shim which can be used to pad. The base of the shim is in the
XY plane at quadrant 1. One corner is at the origin. The width is parallel
to the x-axis.
The shim can be used if the laserbase is not correctly alligned.
The laser was provided by Odic Force, productid OFL510-1.
param: height: defines height shim [mm]
"""
# PARAMETER
xdisp = 48.5 # [mm], x-displacement screw
ydisp = 16 # [mm], y-displacement screws
r_shaft = 2 + 0.5 # [mm], shaft radius screws
length = 75 # [mm], x-direction length laser
width = 30 # [mm], y-direction width laser
screw_offst = 7 # [mm], screw offset +x-edge
# MAXIMAL MATERIAL BASE
base = cube([length, width, height])
# screw holes
screws = cylinder(h=height, r=r_shaft) + right(xdisp)(cylinder(h=height,
r=r_shaft))
spiegel = forward(ydisp / 2)(mirror([0, 1, 0])(back(ydisp / 2)(screws)))
screws += spiegel
# create holes
base -= translate([length - xdisp - screw_offst, (width - ydisp) / 2,
0])(screws)
return base
def screw(r_head, h_head, r_shaft, length, thick=THICK_WALL):
"""screw
create a hole so a screw can be screwd into the box
the center of the screw is aligned with the center of the coordinate system
the screw is oriented as flipped T, i.e. it is standing on its head.
screws are generated with an enclosing of THICK_WALL mm
the interior is ensured via the hole function
it is assumed that r_head > r_shaft
The height of the head is h_head, an additional r_head-r_r_shaft is added
to ensure printablity.
:param r_head: radius of the head of the screw [mm]
:param h_head: height of the head of the screw [mm]
:param r_shaft: radius of the shaft of the screw [mm]
:param length: desired length of the screw [mm]
"""
h_shaft = length - h_head - (r_head - r_shaft)
head = cylinder(h=h_head, r=r_head, segments=30)
# 45 degrees cone for printability
cone = up(h_head)(cylinder(h=r_head - r_shaft,
r1=r_head,
r2=r_shaft,
segments=30))
shaft = up(h_head + (r_head - r_shaft))(cylinder(h=h_shaft,
r=r_shaft,
segments=30))
inner = head + cone + shaft
screw = cylinder(h=length, r=r_head + thick) - hole()(inner)
return screw
def slot(r_head, h_head, r_shaft, width, height):
"""slot
openscad styled vertically oriented printable slot
origin formed by the center of left circle
:param r_head: the radius of the top of the screw, [mm]
:param h_head: the height of the top of the screw, [mm]
:param r_shaft: the radius of the shaft of the screw, [mm]
:param width: the width of the slot, [mm]
:param height: the height of the slot, [mm]
"""
h_shaft = height - h_head - (r_head - r_shaft)
head = cylinder(h=h_head, r=r_head, segments=30)
# 45 degrees cone for printability
cone = up(h_head)(cylinder(h=r_head - r_shaft,
r1=r_head,
r2=r_shaft,
segments=30))
shaft = up(h_head + (r_head - r_shaft))(cylinder(h=h_shaft,
r=r_shaft,
segments=30))
cyl = head + cone + shaft
inner = hull()(cyl, right(width)(cyl))
cyl = cylinder(h=height, r=r_head + THICK_WALL)
outer = hull()(cyl, right(width)(cyl))
slot = outer - hole()(inner)
return slot
def m3_nut():
hx = cylinder(r=nut_rad, h=nut_height)
hx.add_param('$fn', 6) # make the nut hexagonal
n = difference()(
hx,
translate((0, 0, -EPSILON))(
cylinder(r=m3_rad, h=nut_height + 2 * EPSILON)
)
)
return n
def board_cylinder():
group = cube() # FIXME: look into empties/children
for x in [-m.rpi_hole_x_dist / 2, m.rpi_hole_x_dist / 2]:
for y in [-m.rpi_hole_y_dist / 2, m.rpi_hole_y_dist / 2]:
c = cylinder(r=m.rpi_cylinder / 2, h=5)
c2 = up(m.rpi_board_height)(
cylinder(r=m.rpi_hole / 2 - m.diameter_margin, h=m.rpi_board_height)
)
c = c + c2
group += forward(y)(left(x)(c))
return group
def pipe_intersection_no_hole():
pipe_od = 12
pipe_id = 10
seg_length = 30
outer = cylinder(r=pipe_od, h=seg_length, center=True)
inner = cylinder(r=pipe_id, h=seg_length + 2, center=True)
pipe_a = outer - inner
pipe_b = rotate(a=90, v=FORWARD_VEC)(pipe_a)
# pipe_a and pipe_b are both hollow, but because
# their central voids aren't explicitly holes,
# the union of both pipes has unwanted internal walls
return pipe_a + pipe_b
def top_bracket(through_screw='m4', chamfer=1, clearance=0.25, bottom_thickness=10, height=30):
body = bracket(bottom_thickness=bottom_thickness, chamfer=chamfer, height=height, clearance=clearance, through_offsets=[20])
d = screw_nut[through_screw]['depth'] + 2.5
nut_recess = so.translate((0,0,bottom_thickness-d))(hex(screw_nut[through_screw]['width'], d+10))
bolt_hole = so.cylinder(r=screw_clearance[through_screw]/2.0, h=bottom_thickness)
return body - nut_recess - bolt_hole
def stopper(screw='m4'):
body = so.cube((40,20,10), center=True)
nut_recess = hex(screw_nut[screw]['width'], screw_nut[screw]['depth'])
bolt_hole = so.translate((0,0,-10))(so.cylinder(r=screw_clearance[screw]/2.0, h=20))
nut_slide = so.translate((0,-screw_nut[screw]['width']/2.0))(so.cube((20, screw_nut[screw]['width'], screw_nut[screw]['depth'])))
nut_attachment = so.rotate((0,-90,-90))(so.translate((0,0,-screw_nut[screw]['depth']/2.0))(nut_slide + nut_recess) + bolt_hole)
return body - so.rotate((0,0,180))(so.translate((0,-13,-10))(expand_for_fit(0.3)(rail_section(20)))) - so.translate((0,-5,0))(nut_attachment)
def doohickey():
hole_cyl = translate(
(0, 0, -EPSILON))(cylinder(r=m3_rad, h=doohickey_h + 2 * EPSILON))
d = difference()(cube([30, 10, doohickey_h], center=True),
translate((-10, 0, 0))(hole_cyl), hole_cyl,
translate((10, 0, 0))(hole_cyl))
return d
def top_part():
maze_path = os.path.join(os.path.dirname(__file__), 'maze7.png')
depth_map = build_depth_map(maze_path)
d = difference()
u = union()
u.add(bumpMapCylinder(depth_map, innerR, hn, 0, 255))
u.add(cylinder(r=innerR + wall + gap, h=gripH))
d.add(u)
d.add(intersection().add(
bumpMapCylinder(depth_map, innerR, hn + 2, wall,
0).set_modifier("")).add(
translate((0, 0, baseH)).add(
cylinder(r=innerR + 2 * wall,
h=h * 1.1).set_modifier(""))))
return d
def split_lock(diameter, thickness=3, depth=40, lip=10, chamfer=1, gap=2, screw='m4', shape='circle'):
lip_part = so.translate((diameter/2.0,-thickness/2.0,0))(so.cube((lip,thickness,depth)))
if shape == 'circle':
hole = so.cylinder(r=diameter/2.0, h=depth*2)
brace = so.cylinder(r=diameter/2.0+thickness, h=depth)
elif shape == 'square':
hole = so.rotate((0,0,45))(so.translate((-diameter/2.0,-diameter/2.0,0))(so.cube((diameter,diameter,depth*2))))
brace = so.rotate((0,0,45))(so.translate((-diameter/2.0-thickness,-diameter/2.0-thickness,0))(so.cube((2*thickness+diameter,2*thickness+diameter,depth))))
holder = so.translate((0,depth/2.0,0))(chamfer_hull(x=True,y=True)(so.rotate((90,0,0))(brace + lip_part)) - so.hole()(so.translate((0,depth/2.0,0))(so.rotate((90,0,0))(hole))))
split = so.translate((0, -depth/2.0-chamfer, -gap/2.0))(so.cube((thickness + diameter + lip,depth+chamfer*2,gap)))
split_nut_recess = so.translate((0,0,chamfer))(hex(screw_nut[screw]['width'], screw_nut[screw]['depth']))
split_nut_slide = so.translate((0,-screw_nut[screw]['width']/2, chamfer))(so.cube((thickness + diameter, screw_nut[screw]['width'], screw_nut[screw]['depth'])))
split_bolt_hole = so.translate((0,0,-thickness*2-chamfer))(so.cylinder(r=screw_clearance[screw]/2.0, h=100))
split_head_recess = so.translate((0,0,-diameter-thickness*2.5))(so.cylinder(r=screw_head_sink[screw]['diameter']/2.0, h=diameter+thickness))
split_tensioner = so.translate(((diameter+lip)/2.0,0,thickness/2.0+chamfer))(split_nut_recess + split_bolt_hole + split_nut_slide + split_head_recess)
return holder - split - so.hole()(split_tensioner)
def carriage_plate(dims=(49, 42, 10), chamfer=1, screw_thickness=8, arm_screw='m4', arm_mount_dist=20):
(x,y,z) = dims
plate = so.translate((0,0,chamfer+z/2.0))(chamfer_hull(x=True,y=True,z=True)(so.cube(dims, center=True)))
head_recess = so.translate((0,0,3))(so.cylinder(r=screw_head_sink['m3']['diameter']/2.0, h=screw_head_sink['m3']['h']*z))
bolt_hole = so.translate((0,0,-z))(so.cylinder(r=screw_clearance['m3']/2.0, h=z*3.0))
for m in [1,-1]:
for t in [True, False]:
x,y = (m,0)
if t:
x,y=y,x
plate -= so.translate((y*41.0/2,x*34.5/2,0))(bolt_hole + head_recess)
head_recess = so.cylinder(r=screw_head_sink[arm_screw]['diameter']/2.0, h=screw_head_sink[arm_screw]['h']+1)
bolt_hole = so.cylinder(r=screw_clearance[arm_screw]/2.0, h=z+2*chamfer)
mount_hole = head_recess + bolt_hole
return plate - so.translate((arm_mount_dist/2.0,0,0))(mount_hole) - so.translate((-arm_mount_dist/2.0,0,0))(mount_hole)
def boxmount():
base = cube([30, 50, 2])
circ = cylinder(h=10, r=1.6, segments=30)
circs = right(5)(circ) + right(25)(circ)
base -= forward(5)(circs)
base -= forward(25)(circs)
base -= forward(45)(circs)
base = rotate([90, 0, 90])(base)
return base
def m3_12():
bolt_height = 12
m = union()(
head(),
translate((0, 0, -bolt_height))(
cylinder(r=m3_rad, h=bolt_height)
)
)
return m
def hex(width, h, fillet_radius = 0.1):
"""
width is the distance between opposing flat sides
"""
r = width/2.0/cos(pi/6.0) # magic so that we have the width b/w flat faces instead of corners
pole = so.translate((r - fillet_radius, 0, 0))(so.cylinder(r=fillet_radius, h=h))
body = pole
for i in range(1,6):
body += so.rotate((0,0,60 * i))(pole)
return so.hull()(body)
def assembly():
pts = [(0, -1, 0),
(1, 0, 0),
(0, 1, 0),
(-1, 0, 0),
(-1, -1, 0)]
a = thread(pts, inner_rad=10, pitch=6, length=2, segments_per_rot=31,
neck_in_degrees=30, neck_out_degrees=30)
return a + cylinder(10 + EPSILON, 2)
def pipe_intersection_hole():
pipe_od = 12
pipe_id = 10
seg_length = 30
outer = cylinder(r=pipe_od, h=seg_length, center=True)
inner = cylinder(r=pipe_id, h=seg_length + 2, center=True)
# By declaring that the internal void of pipe_a should
# explicitly remain empty, the combination of both pipes
# is empty all the way through.
# Any OpenSCAD / SolidPython object can be declared a hole(),
# and after that will always be empty
pipe_a = outer + hole()(inner)
# Note that "pipe_a = outer - hole()(inner)" would work identically;
# inner will always be subtracted now that it's a hole
pipe_b = rotate(a=90, v=FORWARD_VEC)(pipe_a)
return pipe_a + pipe_b
def sidewall_clamp(): # my wood is 19.5mm wide and 38.6mm tall
body = chamfer_hull(z=True, y=True)(so.cube((20, thickness, height)))
body += chamfer_hull(z=True, y=True, x=[1])(so.translate((19,0,0))(so.cube((1, thickness, height))) + so.translate((50,-thickness*0.25,0))(so.cube((10, thickness*1.5, 45))))
wood_cavity = so.translate((20,0,5))(so.cube((100,19.5,38.6)))
body -= wood_cavity
insert = so.rotate((0,90,0))(m3_heatset_insert_hole)
for i in range(1,4):
body -= so.translate((0,thickness/2.0,height/4.0*i))(insert)
body -= so.translate((depth,thickness/2.0,height/4.0*i))(so.rotate((0,0,180))(insert))
nut_recess = so.translate((54,-5,15))(so.rotate((90,30,0))(hex(screw_nut['m3']['width'], screw_nut['m3']['depth'])))
screw_recess = so.translate((54,22.4+5,15))(so.rotate((90,0,0))(so.cylinder(screw_head_sink['m3']['diameter']/2.0, screw_nut['m3']['depth'])))
screw_hole = so.translate((54,22.4+10,15))(so.rotate((90,0,0))(so.cylinder(screw_clearance['m3']/2.0, 100)))
screw_capture = nut_recess + screw_recess + screw_hole
def add_screw(x,y):
nonlocal body
body -= so.translate((-x,0,y))(screw_capture)
add_screw(0,0)
add_screw(0,17)
add_screw(17/2.0,17/2.0)
return body
def double_side_rail(h, bottom_thickness=10, holes=None):
section = so.translate((0,5,0))(rail_section(h))
stack = section + so.rotate((0,0,180))(section) + so.translate((-8,-5,0))(so.cube((16,10,h)))
if holes is not None:
bolt_hole = so.rotate((0,90,0))(so.translate((0,0,-40))(so.cylinder(r=screw_clearance[holes]/2.0, h=80)))
def mkhole(offset):
nonlocal stack
stack -= so.translate((0,0,offset))(bolt_hole)
mkhole(20-bottom_thickness)
mkhole(40-bottom_thickness)
mkhole(h-10)
return stack
def test_hole_transform_propagation(self):
# earlier versions of holes had problems where a hole
# that was used a couple places wouldn't propagate correctly.
# Confirm that's still happening as it's supposed to
h = hole()(rotate(a=90, v=[0, 1, 0])(cylinder(2, 20, center=True)))
h_vert = rotate(a=-90, v=[0, 1, 0])(h)
a = cube(10, center=True) + h + h_vert
expected = '\n\ndifference(){\n\tunion() {\n\t\tcube(center = true, size = 10);\n\t\trotate(a = -90, v = [0, 1, 0]) {\n\t\t}\n\t}\n\t/* Holes Below*/\n\tunion(){\n\t\trotate(a = 90, v = [0, 1, 0]) {\n\t\t\tcylinder(center = true, h = 20, r = 2);\n\t\t}\n\t\trotate(a = -90, v = [0, 1, 0]){\n\t\t\trotate(a = 90, v = [0, 1, 0]) {\n\t\t\t\tcylinder(center = true, h = 20, r = 2);\n\t\t\t}\n\t\t}\n\t} /* End Holes */ \n}'
actual = scad_render(a)
self.assertEqual(expected, actual)
def bottom_part():
top = difference()
u = union()
u2 = union()
top.add(u)
d = difference()
d.add(cylinder(r=innerR + wall + gap, h=toph))
d.add(translate((0, 0, baseH)).add(cylinder(r=innerR + gap, h=toph)))
u.add(d)
top.add(u2)
for i in range(0, 3):
a = i * 2 * pi / 3
r = innerR + gap + wall / 2
u.add(
translate(((r - 0.3) * cos(a), (r - 0.3) * sin(a),
toph - 6)).add(sphere(r=2.4)))
u2.add(
translate(((r + wall - 0.3) * cos(a), (r + wall - 0.3) * sin(a),
toph - 6)).add(sphere(r=2.4)))
return top
def slot(radius, height, width):
"""slot
openscad styled vertically oriented printable slot
origin formed by the center of the left circle
:param radius: the radius of the top of the screw
:param height: the height of the slot
:param width: the width of the slot, i.e. distance between radii
"""
cyl = cylinder(h=height, r=radius)
outer = hull()(cyl, right(width)(cyl))
return outer
def assembly():
section = screw_thread.default_thread_section(tooth_height=10,
tooth_depth=5)
s = screw_thread.thread(outline_pts=section,
inner_rad=inner_rad,
pitch=screw_height,
length=screw_height,
segments_per_rot=SEGMENTS,
neck_in_degrees=90,
neck_out_degrees=90)
c = cylinder(r=inner_rad, h=screw_height)
return s + c
def basewall(passive=False):
body = chamfer_hull(z=True, y=True, x=[-1])(so.cube((thickness, width, height)))
m3_hole = so.translate((thickness + 1.0 ,0,0))(so.rotate((0,-90,0))(so.cylinder(r=screw_clearance['m3']/2.0, h=m3_support_depth) + so.translate((0,0,m3_support_depth))(so.cylinder(r=screw_head_sink['m3']['diameter']/2.0, h=thickness+2.0-m3_support_depth))))
for i in range(1,4):
body -= so.translate((0,thickness/2.0,height/4.0*i))(m3_hole)
body -= so.translate((0,width-thickness/2.0,height/4.0*i))(m3_hole)
shaft_hole = so.cylinder(r=39.0/2+0.05, h=10) + so.cylinder(r=15.2/2+0.3, h=thickness+2)
for i in [0,90,180,270]:
shaft_hole += so.rotate((0,0,i))(so.translate((19.5,0,0))(so.cylinder(r=2, h=thickness+2)))
shaft_hole = so.rotate((0,-90,0))(shaft_hole)
servo_offset = 75
servo_vertical_offset = 8
servo_shaft_offset = 9.7
gear_spacing = 50
gear_angle = 0.75
for offset in [servo_offset - gear_spacing * cos(gear_angle), 110, 155, 200]:
body -= so.translate((thickness + 1, offset, servo_vertical_offset + servo_shaft_offset + gear_spacing * sin(gear_angle)))(shaft_hole)
if not passive:
body -= so.translate((-1, servo_offset, servo_vertical_offset))(servo_mount())
if passive:
body = so.mirror((1,0,0))(body)
return body
def iron_holder(thickness=20, depth=40, length=45, iron_diameter=20.5, chamfer=1, iron_holder_thickness=5,arm_screw='m4', arm_mount_dist=20, gap=5, split_screw='m4', cup_diameter=30, cup_thickness=5):
arm = chamfer_hull(x=True,y=True,z=[1])(so.translate((-thickness/2.0, -depth/2.0, 0))(so.cube((thickness,depth,length + cup_diameter))))
counterweight_cup = so.translate((0,depth/2.0,length-cup_thickness))(chamfer_hull(x=True,y=True)(so.rotate((90,0,0))(so.cylinder(r=cup_diameter/2.0+cup_thickness, h=depth))) - so.hole()(so.translate((0,depth/2.0-cup_thickness,0))(so.rotate((90,0,0))(so.cylinder(r=cup_diameter/2.0, h=depth)))))
holder = so.translate((0,0,cup_diameter+length))(so.rotate((0,-90,0))(split_lock(iron_diameter, thickness=iron_holder_thickness, depth=depth, lip=10, chamfer=chamfer, gap=gap, screw=split_screw)))
rope_tie = so.translate((0,depth/2.0+chamfer,length/2.0-iron_holder_thickness))(so.rotate((-90,90,0))(arch()))
nut_recess = hex(screw_nut[arm_screw]['width'], screw_nut[arm_screw]['depth'])
bolt_hole = so.cylinder(r=screw_clearance[arm_screw]/2.0, h=10)
nut_slide = so.translate((0,-screw_nut[arm_screw]['width']/2.0))(so.cube((thickness, screw_nut[arm_screw]['width'], screw_nut[arm_screw]['depth'])))
nut_attachment = so.translate((0,0,5))(nut_slide + nut_recess) + bolt_hole
plate_install_holes = so.translate((0,0,-0.1))(carraige_plate_install_holes(diameter=4.95))
return counterweight_cup + arm + holder - so.translate((0,arm_mount_dist/2.0,0))(nut_attachment) - so.translate((0,-arm_mount_dist/2.0,0))(nut_attachment) + rope_tie - plate_install_holes
def ueyeholder():
"""ueyeholder
creates a holder for an ueye camera
A holder for an uEye camera to view upward.
The uEye camera cannot look upward due its connector on the back.
This design solves this problem via a cubical enclosure.
"""
#### UEYE cubical dimension
margin = 0.3
size_x = 34 # mm
size_y = 32 # mm
size_z = 34.6 # mm
### UEYE screw
screw_d = 3 # mm
screw_z = 30.4 # sep z-direction
screw_z -= screw_d
screw_ytop = 19.8 # mm
screw_ytop -= screw_d
screw_ybottom = 21.8
screw_ybottom -= screw_d
screw_zoff = 1.3 + screw_d / 2
connector_z = 18 # mm
connector_x = 16.2 # mm
####
# box
# camera is pushed in from bottom
holder = cube([
size_x + 2 * THCKW + margin, size_y + 2 * THCKW + margin,
size_z + THCKW + connector_z + margin
])
holder -= translate([THCKW, THCKW, THCKW])(cube([
size_x + margin, size_y + margin, size_z + THCKW + connector_z + margin
]))
# 4 screw holes
socket = cylinder(h=size_x + 2 * THCKW, r=screw_d / 2, segments=SGM)
socket = rotate([0, 90, 0])(socket)
sockets = socket + forward(screw_ybottom)(socket)
temp = (screw_ytop - screw_ybottom) * 0.5
sockets += up(screw_z)(back(temp)(socket) +
forward(screw_ytop - temp)(socket))
# substraction prep sockets
holder -= translate([
0, (size_y - screw_ybottom) * 0.5 + THCKW + 0.5 * margin,
screw_zoff + THCKW + connector_z + 0.5 * margin
])(sockets)
# space connector
holder -= translate([THCKW + 0.5 * (size_x - connector_x), 0, THCKW])(cube(
[connector_x, THCKW, size_z + THCKW + connector_z]))
return holder
