cadquery/monitor/hinge.py

import cadquery2 as cq
from cadquery2 import exporters

from parameters import *

# M3x20 screw
screw_l = 22
screw_shaft = 20
screw_head_h = 2.5
screw_head_radius = 3.5
screw_radius = 1.5

hinge_w = 7.5
hinge_h = 15
hinge_t = ti_depth - 1
hinge_gap = screw_shaft - 2 * hinge_t
# The side of the screw head
hinge_profile_1 = (
    cq.Sketch()
    .segment((0, 0), (0, hinge_h))
    .arc((0, hinge_h), (hinge_w / 2, hinge_h + hinge_w/2), (hinge_w, hinge_h))
    .segment((hinge_w, 0))
    .close()
    .arc((hinge_w / 2, hinge_h), screw_radius, 0, 360)
    .assemble()
)

hinge_profile_2 = (
    cq.Sketch()
    .segment((0, 0), (0, hinge_h))
    .arc((0, hinge_h), (hinge_w / 2, hinge_h + hinge_w/2), (hinge_w, hinge_h))
    .segment((hinge_w, 0))
    .close()
    .arc((hinge_w / 2, hinge_h), ti_radius, 0, 360)
    .assemble()
)

hinge = (
    cq.Workplane("bottom")
    .placeSketch(hinge_profile_1)
    .extrude(hinge_t)
    .workplane(offset=hinge_gap)
    .placeSketch(hinge_profile_2)
    .extrude(hinge_t)
)

#exporters.export(hinge, "hinge.stl")