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Inscread plate strap size

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Also fix mass printing on all objects

Signed-off-by: Arnaud Morin <arnaud.gfpv@mailops.fr>
This commit is contained in:
Arnaud Morin
2026-09-21 22:22:01 +02:00
parent e70d2abed2
commit e29f86fa70
9 changed files with 42 additions and 65 deletions
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6
arm.py
View File

@@ -147,7 +147,5 @@ if "show_object" not in globals(): # running outside CQ-editor
show_object(result) show_object(result)
if __name__ == "__main__": if __name__ == "__main__":
vol = result.val().Volume() v = result.val().Volume()
m = vol * CF_DENSITY print("%-12s %.2f g" % ("arm", v * CF_DENSITY))
print(f"arm mass {m:.2f} g each, {4*m:.2f} g for four")

9
camera_mount.py
View File

@@ -4,6 +4,7 @@
import cadquery as cq import cadquery as cq
from math import sqrt from math import sqrt
from frame_params import TPU_DENSITY
def camera_mount(): def camera_mount():
@@ -130,9 +131,5 @@ if "show_object" not in globals(): # running outside CQ-editor
show_object(result) show_object(result)
if __name__ == "__main__": if __name__ == "__main__":
TPU_DENSITY = 1.21e-3 # g/mm3 v = result.val().Volume()
print("%-12s %.2f g" % ("camera mount", v * TPU_DENSITY))
solid = result.val()
print("camera_mount %.2f g in TPU"
% (solid.Volume() * TPU_DENSITY))

14
fc.py
View File

@@ -3,13 +3,7 @@
# #
import cadquery as cq import cadquery as cq
from frame_params import PCB_DENSITY
# A flight controller is not a material, it is a stack: two boards, their
# spacers, and everything soldered to them. This models only the envelope, as
# one solid, so the density is FR4's -- bare PCB -- and the dense parts (FETs,
# inductors, connectors) stand in for the air between the boards. It lands the
# block at about 12 g, which is what a real 25.5 mm FC plus 4-in-1 ESC weighs.
PCB_DENSITY = 1.85e-3 # g/mm3, FR4
def fc(): def fc():
@@ -76,8 +70,6 @@ if "show_object" not in globals(): # running outside CQ-editor
show_object(result) show_object(result)
if __name__ == "__main__": if __name__ == "__main__":
v = result.val().Volume()
print("fc %.2f g" % (result.val().Volume() * PCB_DENSITY)) print("%-12s %.2f g" % ("fc", v * PCB_DENSITY))

17
frame_params.py
View File

@@ -7,24 +7,27 @@ from math import cos, radians, sin, sqrt
# --- material --------------------------------------------------------------- # --- material ---------------------------------------------------------------
THICKNESS = 2.0 THICKNESS = 2.0
CF_DENSITY = 1.55e-3 # g/mm3, for mass reporting CF_DENSITY = 1.55e-3 # g/mm3
TPU_DENSITY = 1.21e-3 # g/mm3
PCB_DENSITY = 1.85e-3 # g/mm3
ALU_DENSITY = 2.70e-3 # g/mm3, for mass reporting
# --- joint fit -------------------------------------------------------------- # --- joint fit --------------------------------------------------------------
FIT = 0.2 # a mortise is its tenon's length + FIT (0.1 per FIT = 0.2 # a mortise is its tenon's length + FIT (0.1 per
# side); the width is a snug match, no FIT added # side); the width is a snug match, no FIT added
TBONE_D = 1.0 # T-bone relief circle = one cutter diameter TBONE_D = 1.0 # T-bone relief circle = one cutter diameter
TENON_L = 4.0 # every tenon in the frame is this long -- the arm's TENON_L = 4.0 # every tenon in the frame is this long -- the arm's
# tip block and the spar's own tenon both key off it # tip block and the spar's own tenon both key off it
# --- overall layout --------------------------------------------------------- # --- overall layout ---------------------------------------------------------
SPAR_H = 4.0 SPAR_H = 4.0
SPAR_OFFSET = 2.5 # spar centreline clears the motor axis by this much, SPAR_OFFSET = 2.5 # spar centreline clears the motor axis by this much,
# outboard -- feeds R_SPAR_LINE below. motor_base.py # outboard -- feeds R_SPAR_LINE below. motor_base.py
# and spar.py each hold their own matching copy of # and spar.py each hold their own matching copy of
# this value now, not linked by import any more, so # this value now, not linked by import any more, so
# keep them in step by hand # keep them in step by hand
# clear gap between the two plates # clear gap between the two plates
PLATE_GAP = 15.0 PLATE_GAP = 15.0

6
lollipop.py
View File

@@ -3,6 +3,7 @@
# #
import cadquery as cq import cadquery as cq
from frame_params import TPU_DENSITY
def lollipop(): def lollipop():
@@ -126,6 +127,5 @@ show_object(result)
if __name__ == "__main__": if __name__ == "__main__":
TPU_DENSITY = 1.21e-3 # g/mm3 v = result.val().Volume()
print("%-12s %.2f g" % ("lollipop", v * TPU_DENSITY))
print("lollipop %.2f g in TPU" % (result.val().Volume() * TPU_DENSITY))

9
motor_base.py
View File

@@ -114,11 +114,6 @@ if "show_object" not in globals(): # running outside CQ-editor
show_object(result) show_object(result)
# Mass report
def report():
vol = result.val().Volume()
print(f" Mass = {vol * CF_DENSITY:5.2f} g")
print(f" Mass x4 = {4 * vol * CF_DENSITY:5.2f} g")
if __name__ == "__main__": if __name__ == "__main__":
report() v = result.val().Volume()
print("%-12s %.2f g" % ("motor base", v * CF_DENSITY))

25
plate.py
View File

@@ -106,33 +106,37 @@ def plate():
p = p.cut(bones.rotate((0, 0, 0), (0, 0, 1), a).translate((x, y, 0))) p = p.cut(bones.rotate((0, 0, 0), (0, 0, 1), a).translate((x, y, 0)))
# Triangle cuts to reduce weight # Triangle cuts to reduce weight
# the small one near center
cut1 = ( cut1 = (
cq.Workplane("XY") cq.Workplane("XY")
.polyline([ .polyline([
(6.5, -9), (7, -7),
(6.5, 9), (7, 7),
(1, 0), (1.5, 0),
]).close() ]).close()
.extrude(THICKNESS) .extrude(THICKNESS)
.edges("|Z") .edges("|Z")
.fillet(1.0) .fillet(1.0)
) )
# strap holes
cut2 = ( cut2 = (
cq.Workplane("XY") cq.Workplane("XY")
.polyline([ .polyline([
(9.5, -9), (11, -8),
(9.5, 9), (11, 8),
(15, 0), (13, 8),
(13, -8),
]).close() ]).close()
.extrude(THICKNESS) .extrude(THICKNESS)
.edges("|Z") .edges("|Z")
.fillet(1.0) .fillet(0.99)
) )
# the big one
cut3 = ( cut3 = (
cq.Workplane("XY") cq.Workplane("XY")
.polyline([ .polyline([
(11, 15), (10, 15),
(-11, 15), (-10, 15),
(0, 4), (0, 4),
]).close() ]).close()
.extrude(THICKNESS) .extrude(THICKNESS)
@@ -168,6 +172,5 @@ show_object(result)
if __name__ == "__main__": if __name__ == "__main__":
v = result.val().Volume() v = result.val().Volume()
print("plate mass %.2f g each, %.2f g for two" % (v * CF_DENSITY, 2 * v * CF_DENSITY)) print("%-12s %.2f g" % ("plate", v * CF_DENSITY))

9
spar.py
View File

@@ -111,12 +111,6 @@ result = spar()
assert result.solids().size() == 1, "spar is not one solid" assert result.solids().size() == 1, "spar is not one solid"
# Mass report
def report():
vol = result.val().Volume()
print(f" Mass = {vol * CF_DENSITY:5.2f} g")
print(f" Mass x4 = {4 * vol * CF_DENSITY:5.2f} g")
# Running outside CQ-editor # Running outside CQ-editor
if "show_object" not in globals(): if "show_object" not in globals():
def show_object(*args, **kwargs): def show_object(*args, **kwargs):
@@ -125,4 +119,5 @@ if "show_object" not in globals():
show_object(result) show_object(result)
if __name__ == "__main__": if __name__ == "__main__":
report() v = result.val().Volume()
print("%-12s %.2f g" % ("spar", v * CF_DENSITY))

12
standoff.py
View File

@@ -4,12 +4,9 @@
import cadquery as cq import cadquery as cq
from frame_params import PLATE_GAP from frame_params import (ALU_DENSITY, PLATE_GAP)
OD = 3.5 # round M2 standoff OD = 3.5 # round M2 standoff
ALU_DENSITY = 2.70e-3 # g/mm3, for mass reporting
PLATE_GAP=16
def standoff(): def standoff():
p = (cq.Workplane("XY") p = (cq.Workplane("XY")
@@ -39,8 +36,5 @@ show_object(result)
if __name__ == "__main__": if __name__ == "__main__":
solid = result.val() v = result.val().Volume()
print("%-12s %.2f g" % ("standoff", v * ALU_DENSITY))
print("standoff %.3f g each, %.3f g for four"
% (solid.Volume() * ALU_DENSITY,
4 * solid.Volume() * ALU_DENSITY))