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Basic lid

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This commit is contained in:
Christian Colglazier 2022-05-20 13:41:48 -04:00
parent 2a2f59787a
commit cc699b0336
1 changed files with 32 additions and 20 deletions
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52
follow_focus.py
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@ -1,6 +1,6 @@
import cadquery as cq import cadquery as cq
import math import copy, math
from shapely.geometry import LineString from shapely.geometry import LineString
from shapely.geometry import Point from shapely.geometry import Point
@ -12,10 +12,14 @@ loop_thickness=1.5
stepper_motor_size=42 stepper_motor_size=42
lid_thicknesss = 5 lid_thicknesss = 5
offset=9 offset=9
part_thinkness=20
gap = stepper_motor_size * math.sin(math.radians(slant_degree)) / math.sin(math.radians(90-slant_degree)) gap = stepper_motor_size * math.sin(math.radians(slant_degree)) / math.sin(math.radians(90-slant_degree))
width = math.sqrt(gap**2 + stepper_motor_size**2 - 2*gap*stepper_motor_size*math.cos(math.radians(90))) width = math.sqrt(gap**2 + stepper_motor_size**2 - 2*gap*stepper_motor_size*math.cos(math.radians(90)))
base = cq.Workplane('XY').lineTo(0,offset).polarLine(stepper_motor_size, 90-slant_degree)
d=20
t=7
end_x=gap+stepper_motor_size-5 end_x=gap+stepper_motor_size-5
end_y=-4.5 end_y=-4.5
angle=40 angle=40
@ -37,28 +41,33 @@ def findRodInter(n_x, n_y):
y = i.geoms[0].coords[0][1] y = i.geoms[0].coords[0][1]
return x, y return x, y
def createOutline(ex_amount):
base = cq.Workplane('XY').lineTo(0,offset).polarLine(stepper_motor_size, 90-slant_degree)
base = base.hLine(width).polarLine(stepper_motor_size-5,270-slant_degree).tangentArcPoint((end_x, end_y), relative=False)
base = base.hLine(width).polarLine(stepper_motor_size-5,270-slant_degree).tangentArcPoint((end_x, end_y), relative=False) outer_x=center_x+math.cos(math.radians(270-slant_degree))*outer_ring_diameter/2
d=20 outer_y=center_y+math.sin(math.radians(270-slant_degree))*outer_ring_diameter/2
t=7 base = base.threePointArc((center_x+outer_ring_diameter/2 ,center_y), (outer_x, outer_y)).polarLine(d, 180-slant_degree).vLine(t)
outer_x=center_x+math.cos(math.radians(270-slant_degree))*outer_ring_diameter/2
outer_y=center_y+math.sin(math.radians(270-slant_degree))*outer_ring_diameter/2
base = base.threePointArc((center_x+outer_ring_diameter/2 ,center_y), (outer_x, outer_y)).polarLine(d, 180-slant_degree).vLine(t)
n_x=base.val().endPoint().toTuple()[0] n_x=base.val().endPoint().toTuple()[0]
n_y=base.val().endPoint().toTuple()[1] n_y=base.val().endPoint().toTuple()[1]
coor_x, coor_y = findRodInter(n_x, n_y) coor_x, coor_y = findRodInter(n_x, n_y)
last_x, last_y = findRodInter(n_x, n_y+2) last_x, last_y = findRodInter(n_x, n_y+2)
base = base.lineTo(coor_x, coor_y) base = base.lineTo(coor_x, coor_y)
base = base.threePointArc((center_x+rod_thickness/2, center_y), (last_x, last_y)) base = base.threePointArc((center_x+rod_thickness/2, center_y), (last_x, last_y))
base = base.polarLine(d, 180-slant_degree).close().extrude(20) base = base.polarLine(d, 180-slant_degree).close().extrude(ex_amount)
# Fillets # Fillets
outer_fillets=2.5 outer_fillets=2.5
base = base.edges('|Z and >Y').fillet(outer_fillets) base = base.edges('|Z and >Y').fillet(outer_fillets)
base = base.edges('|Z and <X').fillet(outer_fillets) base = base.edges('|Z and <X').fillet(outer_fillets)
base = base.edges('|Z').edges('<<Y[-2]').fillet(5) base = base.edges('|Z').edges('<<Y[-2]').fillet(5)
return base
lid = createOutline(-lid_thicknesss).translate((0,0,part_thinkness))
base = createOutline(part_thinkness)
# Shell # Shell
copy = base.faces('>>Z[0]').workplane().center(0, -offset-loop_thickness).polarLine(stepper_motor_size, slant_degree).polarLine(-2*stepper_motor_size, 90+slant_degree).hLine(-2*stepper_motor_size).close().cutThruAll() copy = base.faces('>>Z[0]').workplane().center(0, -offset-loop_thickness).polarLine(stepper_motor_size, slant_degree).polarLine(-2*stepper_motor_size, 90+slant_degree).hLine(-2*stepper_motor_size).close().cutThruAll()
@ -73,7 +82,10 @@ stepper_hole_radius=stepper_hole_width/2*math.sqrt(2)
stepper_center = cq.Workplane('XY').center(0, -offset-loop_thickness).lineTo(0, offset).polarLine(stepper_motor_size/2, 90-slant_degree).polarLine(stepper_motor_size/2, -slant_degree).val().endPoint().toTuple() stepper_center = cq.Workplane('XY').center(0, -offset-loop_thickness).lineTo(0, offset).polarLine(stepper_motor_size/2, 90-slant_degree).polarLine(stepper_motor_size/2, -slant_degree).val().endPoint().toTuple()
base = base.faces('>>Z[0]').workplane().center(stepper_center[0], -stepper_center[1]).circle(22.5/2).pushPoints([(stepper_hole_radius*math.cos(math.radians(45+slant_degree)),stepper_hole_radius*math.sin(math.radians(45+slant_degree))), (stepper_hole_radius*math.cos(math.radians(135+slant_degree)),stepper_hole_radius*math.sin(math.radians(135+slant_degree))),(stepper_hole_radius*math.cos(math.radians(225+slant_degree)),stepper_hole_radius*math.sin(math.radians(225+slant_degree))),(stepper_hole_radius*math.cos(math.radians(315+slant_degree)),stepper_hole_radius*math.sin(math.radians(315+slant_degree)))]).circle(3/2).cutBlind(-1.6) base = base.faces('>>Z[0]').workplane().center(stepper_center[0], -stepper_center[1]).circle(22.5/2).pushPoints([(stepper_hole_radius*math.cos(math.radians(45+slant_degree)),stepper_hole_radius*math.sin(math.radians(45+slant_degree))), (stepper_hole_radius*math.cos(math.radians(135+slant_degree)),stepper_hole_radius*math.sin(math.radians(135+slant_degree))),(stepper_hole_radius*math.cos(math.radians(225+slant_degree)),stepper_hole_radius*math.sin(math.radians(225+slant_degree))),(stepper_hole_radius*math.cos(math.radians(315+slant_degree)),stepper_hole_radius*math.sin(math.radians(315+slant_degree)))]).circle(3/2).cutBlind(-1.6)
lid = lid.cut(base)
# Render # Render
show_object(base, name='Follow Focus Base') show_object(base, name='Follow Focus Base')
show_object(lid, name='Follow Focus Lid')