kelvin
/
cnc-v2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix BK12 model

This commit is contained in:
Kelvin Ly 2024-12-05 22:52:51 -05:00
parent 8e7fe382d2
commit d71cbf1391
1 changed files with 183 additions and 157 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

340
utils.py
View File

@ -5,25 +5,26 @@ from ocp_vscode import *
import localselectors import localselectors
class SFU1204: class SFU1204:
def __init__(self, base, l): def __init__(self, base, l):
self.w = base.workplane() self.w = base.workplane()
self.len = l self.len = l
def ballscrew(self): def ballscrew(self):
profile = [ profile = [
(0, 0), (0, 0),
(0, 8/2), (0, 8 / 2),
(15, 8/2), (15, 8 / 2),
(15, 10/2), (15, 10 / 2),
(15+16, 10/2), (15 + 16, 10 / 2),
(15+39, 10/2), (15 + 39, 10 / 2),
(15+39, 12/2), (15 + 39, 12 / 2),
(self.len - 10, 12/2), (self.len - 10, 12 / 2),
(self.len - 10, 8/2), (self.len - 10, 8 / 2),
(self.len, 8/2), (self.len, 8 / 2),
(self.len, 0), (self.len, 0),
] ]
w = self.w.moveTo(0, 0) w = self.w.moveTo(0, 0)
for v in profile[1:]: for v in profile[1:]:
w = w.lineTo(v[1], v[0]) w = w.lineTo(v[1], v[0])
@ -32,41 +33,45 @@ class SFU1204:
def nut(self, x): def nut(self, x):
w = self.w.transformed(offset=(0, x, 0), rotate=(90, 0, 0)) w = self.w.transformed(offset=(0, x, 0), rotate=(90, 0, 0))
n = (w.sketch() n = (
.circle(40/2) w.sketch()
.circle(12/2, mode='s') .circle(40 / 2)
.rect(42, 30, mode='i') .circle(12 / 2, mode="s")
.rect(42, 30, mode="i")
.finalize() .finalize()
.extrude(10) .extrude(10)
.faces(">z") .copyWorkplane(w)
.transformed(offset=(0, 0, 10))
.workplane() .workplane()
.tag("nut_face") .tag("nut_face")
.sketch() .sketch()
.circle(22/2) .circle(22 / 2)
.circle(12/2, mode='s') .circle(12 / 2, mode="s")
.finalize() .finalize()
.extrude(25)) .extrude(25)
hole_r = 32/2
hole_pts = [
(hole_r*math.cos(angle*math.pi/180),
hole_r*math.sin(angle*math.pi/180)) for angle in
[-45, 0, 45, 180-45, 180, 180+45]]
n = (n.workplaneFromTagged("nut_face")
.pushPoints(hole_pts)
.hole(4.8)
) )
hole_r = 32 / 2
hole_pts = [
(
hole_r * math.cos(angle * math.pi / 180),
hole_r * math.sin(angle * math.pi / 180),
)
for angle in [-45, 0, 45, 180 - 45, 180, 180 + 45]
]
n = n.workplaneFromTagged("nut_face").pushPoints(hole_pts).hole(4.8)
return n return n
def nutHoles(self, solid, x): def nutHoles(self, solid, x):
w = self.w.transformed(offset=(0, x, 0), rotate=(90, 0, 0)) w = self.w.transformed(offset=(0, x, 0), rotate=(90, 0, 0))
hole_r = 32/2 hole_r = 32 / 2
hole_pts = [ hole_pts = [
(hole_r*math.cos(angle*math.pi/180), (
hole_r*math.sin(angle*math.pi/180)) for angle in hole_r * math.cos(angle * math.pi / 180),
[-45, 0, 45, 180-45, 180, 180+45]] hole_r * math.sin(angle * math.pi / 180),
solid = (solid.copyWorkplane(w) )
.pushPoints(hole_pts) for angle in [-45, 0, 45, 180 - 45, 180, 180 + 45]
.hole(4.8)) ]
solid = solid.copyWorkplane(w).pushPoints(hole_pts).hole(4.8)
return solid return solid
def fixedBearing(self): def fixedBearing(self):
@ -89,18 +94,19 @@ class SFU1204:
X = 6.6 X = 6.6
Y = 10.8 Y = 10.8
Z = 1.5 Z = 1.5
w = self.w.transformed(offset=(0, 39+15-L, 0), rotate=(-90, 0, 0)) w = self.w.transformed(offset=(0, 39 + 15, 0), rotate=(-90, 180, 0))
w2 = w.transformed(offset=(0, (H-H1)/2, 0)) w2 = w.transformed(offset=(0, h - H1 / 2, 0))
w3 = w.transformed(offset=(0, E / 2, 0))
bearing = (w bearing = (
.rect(B1, B1) w.rect(B1, B1)
.extrude(L1+L) .extrude(L1 + L)
.copyWorkplane(w2) .copyWorkplane(w2)
.rect(B, H1) .rect(B, H1)
.extrude(L) .extrude(L)
.copyWorkplane(w.transformed(rotate=(180, 0, 0))) .copyWorkplane(w.transformed(rotate=(180, 0, 0)))
.hole(d1) .hole(d1)
.copyWorkplane(w2.transformed(rotate=(180, 0, 0))) .copyWorkplane(w3.transformed(rotate=(180, 0, 0)))
.rect(P, E, forConstruction=True) .rect(P, E, forConstruction=True)
.vertices() .vertices()
.hole(d2) .hole(d2)
@ -130,12 +136,9 @@ class SFU1204:
Y = 10.8 Y = 10.8
Z = 1.5 Z = 1.5
w = self.w.transformed(offset=(0, 39+15-L, -(H-H1)/2), rotate=(-90, 0, 0)) w = self.w.transformed(offset=(0, 39 + 15, -E / 2), rotate=(-90, 0, 0))
return (solid return (
.copyWorkplane(w) solid.copyWorkplane(w).rect(P, E, forConstruction=True).vertices().hole(d2)
.rect(P, E, forConstruction=True)
.vertices()
.hole(d2)
) )
def floatingBearing(self): def floatingBearing(self):
@ -154,24 +157,33 @@ class SFU1204:
Y = 10.8 Y = 10.8
Z = 1.5 Z = 1.5
w = self.w.transformed(offset=(0, self.len-10, 0), rotate=(-90, 0, 0)) w = self.w.transformed(
b = (w offset=(0, self.len - 10 + 7 / 2 - L / 2, 0), rotate=(-90, 0, 0)
.rect(B1, B1) )
b = (
w.rect(B1, B1)
.extrude(L) .extrude(L)
.faces(">z") .copyWorkplane(w.transformed(offset=(0, 0, L), rotate=(0, 0, 180)))
.workplane() .workplane()
.tag("floating_far_end") .tag("floating_far_end")
.copyWorkplane(w) .copyWorkplane(w)
.center(0, (H-H1)/2) .center(0, h - H1 / 2)
.rect(B, H1) .rect(B, H1)
.extrude(L) .extrude(L)
.workplaneFromTagged("floating_far_end") .workplaneFromTagged("floating_far_end")
.hole(d1) .hole(d1)
.workplaneFromTagged("floating_far_end") .workplaneFromTagged("floating_far_end")
.center(0, -(H-H1)/2) .center(0, -E / 2)
.rect(P, E, forConstruction=True) .rect(P, E, forConstruction=True)
.vertices() .vertices()
.hole(d2) .hole(d2)
.copyWorkplane(w)
.circle(30 / 2)
.extrude(L / 2 - 7 / 2, combine="s")
.workplaneFromTagged("floating_far_end")
.transformed(rotate=(180, 0, 0))
.circle(30 / 2)
.extrude(L / 2 - 7 / 2, combine="s")
) )
return b return b
@ -191,51 +203,54 @@ class SFU1204:
Y = 10.8 Y = 10.8
Z = 1.5 Z = 1.5
w = self.w.transformed(offset=(0, self.len-10+L, 0), rotate=(90, 0, 0)) w = self.w.transformed(offset=(0, self.len - 10 + L, 0), rotate=(90, 0, 0))
solid = (solid solid = (
.copyWorkplane(w) solid.copyWorkplane(w)
.center(0, -(H-H1)/2) .center(0, -E / 2)
.rect(P, E, forConstruction=True) .rect(P, E, forConstruction=True)
.vertices() .vertices()
.hole(d2) .hole(d2)
) )
return solid return solid
# it's oriented along the y axis of the given base plane # it's oriented along the y axis of the given base plane
class HGR20: class HGR20:
def __init__(self, base, l): def __init__(self, base, l):
self.base = base.workplane() self.base = base.workplane()
self.l = l self.l = l
def holes(self, w): def holes(self, w):
pts = [] pts = []
x = 20 x = 20
while x < self.l + 1e-6: while x < self.l + 1e-6:
pts.append((x - self.l/2, 0)) pts.append((x - self.l / 2, 0))
x += 60 x += 60
w = (w.copyWorkplane(self.base) w = (
.transformed(offset=(0,0,17)) w.copyWorkplane(self.base)
.pushPoints(pts) .transformed(offset=(0, 0, 17))
.hole(5)) .pushPoints(pts)
.hole(5)
)
return w return w
def rail_sketch(s = None): def rail_sketch(s=None):
# pixel coordinates based on a picture in the Hiwin's # pixel coordinates based on a picture in the Hiwin's
# linear rail guidebook # linear rail guidebook
hgr_profile = [ hgr_profile = [
(0, 0), (0, 0),
(37, 0), (37, 0),
(37 + 6, 6), (37 + 6, 6),
(96 - 6, 6), (96 - 6, 6),
(96, 0), (96, 0),
(186-17, 0), (186 - 17, 0),
(186, 17), (186, 17),
(186, 76), (186, 76),
(129, 133), (129, 133),
(129, 59 + 133), (129, 59 + 133),
(129 + 20, 59 + 133 + 20), (129 + 20, 59 + 133 + 20),
#(31, 129 + 20 + 31, 133 + 20 + 31), # (31, 129 + 20 + 31, 133 + 20 + 31),
(186 - 6, 316 - 42 - 25 - 6), (186 - 6, 316 - 42 - 25 - 6),
(186, 316 - 42 - 25), (186, 316 - 42 - 25),
(186, 316 - 42), (186, 316 - 42),
@ -243,9 +258,9 @@ class HGR20:
(31, 186 - 6 - 31, 316 - 6 - 1), (31, 186 - 6 - 31, 316 - 6 - 1),
(143 + 6, 316 - 6), (143 + 6, 316 - 6),
(143, 316), (143, 316),
(0, 316) (0, 316),
] ]
scale = (10/186*17/316)**0.5 scale = (10 / 186 * 17 / 316) ** 0.5
scaled_profile = [tuple((scale * v for v in vals)) for vals in hgr_profile] scaled_profile = [tuple((scale * v for v in vals)) for vals in hgr_profile]
if s is None: if s is None:
s = cq.Sketch() s = cq.Sketch()
@ -263,163 +278,171 @@ class HGR20:
s = s.segment((-v[1], v[2])) s = s.segment((-v[1], v[2]))
s = s.segment((0, 0)) s = s.segment((0, 0))
return s return s
def rail(self): # workplane or face to use, length of rail def rail(self): # workplane or face to use, length of rail
# TODO rotate w # TODO rotate w
xy = cq.Workplane().copyWorkplane(self.base) xy = cq.Workplane().copyWorkplane(self.base)
w = xy.transformed((90, 90, 0), (-self.l/2, 0, 0)) w = xy.transformed((90, 90, 0), (-self.l / 2, 0, 0))
w = w.placeSketch(HGR20.rail_sketch().assemble()) w = w.placeSketch(HGR20.rail_sketch().assemble())
w = w.extrude(self.l) w = w.extrude(self.l)
x = 20 x = 20
pts = [] pts = []
while x < self.l: while x < self.l:
pts.append((x-self.l/2, 0)) pts.append((x - self.l / 2, 0))
x += 60 x += 60
#print("points", pts) # print("points", pts)
w = (w.copyWorkplane(xy) w = (
.transformed(offset=(0,0,17)) w.copyWorkplane(xy).transformed(offset=(0, 0, 17)).pushPoints(pts).hole(5)
.pushPoints(pts) ) # TODO replace with counterbore and get proper diameter
.hole(5)) # TODO replace with counterbore and get proper diameter
return w return w
W = 44 W = 44
H = 30 H = 30
H1 = 4.6 H1 = 4.6
L = 77.5 L = 77.5
L1 = 50.1 # for HGH20CA, TODO deal with variations L1 = 50.1 # for HGH20CA, TODO deal with variations
B = 32 B = 32
C = 36 C = 36
l = 5 # M5x6 l = 5 # M5x6
T = 6 T = 6
def carriage(self, x): # HGH20CA def carriage(self, x): # HGH20CA
W = 44 W = 44
H = 30 H = 30
H1 = 4.6 H1 = 4.6
L = 77.5 L = 77.5
L1 = 50.1 # for HGH20CA, TODO deal with variations L1 = 50.1 # for HGH20CA, TODO deal with variations
B = 32 B = 32
C = 36 C = 36
l = 5 # M5x6 l = 5 # M5x6
T = 6 T = 6
xy = cq.Workplane().copyWorkplane(self.base) xy = cq.Workplane().copyWorkplane(self.base)
w = xy.transformed((90, 90, 0), (-self.l/2 + x, 0, 0)).tag("endplane") w = xy.transformed((90, 90, 0), (-self.l / 2 + x, 0, 0)).tag("endplane")
# TODO # TODO
s = (
s = (cq.Sketch() cq.Sketch()
.segment((W/2, H1), (W/2, H)) .segment((W / 2, H1), (W / 2, H))
.segment((-W/2, H)) .segment((-W / 2, H))
.segment((-W/2, H1)) .segment((-W / 2, H1))
.segment((W/2, H1)) .segment((W / 2, H1))
.assemble() .assemble()
) )
s = s.face(HGR20.rail_sketch().assemble(), mode="s") s = s.face(HGR20.rail_sketch().assemble(), mode="s")
s2 = (cq.Sketch() s2 = (
.segment((W/2, H1), (W/2, H-3)) cq.Sketch()
.segment((-W/2, H-3)) .segment((W / 2, H1), (W / 2, H - 3))
.segment((-W/2, H1)) .segment((-W / 2, H - 3))
.segment((W/2, H1)) .segment((-W / 2, H1))
.assemble() .segment((W / 2, H1))
) .assemble()
)
s2 = s2.face(HGR20.rail_sketch().assemble(), mode="s") s2 = s2.face(HGR20.rail_sketch().assemble(), mode="s")
pts = [] pts = []
def savePointsF(l, p): def savePointsF(l, p):
l.append(p) l.append(p)
return p return p
#origin = w.workplane().plane.toWorldCoords(cq.Vector(0, 0, 0))
#norm = w.workplane().plane.toWorldCoords(cq.Vector(0, 1, 0)) # origin = w.workplane().plane.toWorldCoords(cq.Vector(0, 0, 0))
#norm = norm - origin # norm = w.workplane().plane.toWorldCoords(cq.Vector(0, 1, 0))
#print(norm) # norm = norm - origin
# print(norm)
# FINALLY GOT THIS WORKING # FINALLY GOT THIS WORKING
w = (w.transformed((0, 0, 0), (0, 0, L/2-L1/2)) w = (
.placeSketch(s).extrude(L1) w.transformed((0, 0, 0), (0, 0, L / 2 - L1 / 2))
.workplaneFromTagged("endplane") .placeSketch(s)
.placeSketch(s2) .extrude(L1)
.extrude(L) .workplaneFromTagged("endplane")
#.faces(cq.DirectionMinMaxSelector(norm, True)) .placeSketch(s2)
.faces(">y") .extrude(L)
.workplane() # .faces(cq.DirectionMinMaxSelector(norm, True))
.transformed((0, 0, 0), (L/2 + x, 0, 0)) .faces(">y")
.rect(C, B) .workplane()
.tag("mountingholes") .transformed((0, 0, 0), (L / 2 + x, 0, 0))
.vertices() # carriage mounting holes are here! .rect(C, B)
#.extrude(20) .tag("mountingholes")
.hole(l, T) .vertices() # carriage mounting holes are here!
) # .extrude(20)
.hole(l, T)
)
return w return w
def carriageHoles(self, w, x): def carriageHoles(self, w, x):
W = 44 W = 44
H = 30 H = 30
H1 = 4.6 H1 = 4.6
L = 77.5 L = 77.5
L1 = 50.1 # for HGH20CA, TODO deal with variations L1 = 50.1 # for HGH20CA, TODO deal with variations
B = 32 B = 32
C = 36 C = 36
l = 5 # M5x6 l = 5 # M5x6
T = 6 T = 6
xy = cq.Workplane().copyWorkplane(self.base).transformed(offset=(0, 0, H)) xy = cq.Workplane().copyWorkplane(self.base).transformed(offset=(0, 0, H))
holes = (xy.transformed((0, 0, 0), (-self.l/2+L/2 + x, 0, 0)) holes = (
.rect(C, B) xy.transformed((0, 0, 0), (-self.l / 2 + L / 2 + x, 0, 0))
.vertices() .rect(C, B)
.cylinder(1000, l/2) .vertices()
) .cylinder(1000, l / 2)
w = (w.cut(holes)) )
w = w.cut(holes)
return w return w
class Plate: class Plate:
# TODO add standard thicknesses here # TODO add standard thicknesses here
pass pass
def inch(x): def inch(x):
return 25.4*x return 25.4 * x
def tubing(l, x, y, w, workplane): def tubing(l, x, y, w, workplane):
return (workplane return workplane.placeSketch(
.placeSketch(cq.Sketch() cq.Sketch().rect(x, y).rect(x - 2 * w, y - 2 * w, mode="s")
.rect(x, y) ).extrude(l)
.rect(x - 2*w, y-2*w, mode='s'))
.extrude(l))
if __name__ == "__main__": if __name__ == "__main__":
plate = (cq.Workplane("XY") plate = (
.rect(200, 200) cq.Workplane("XY")
.extrude(10) .rect(200, 200)
.faces(">Z") .extrude(10)
.workplane() .faces(">Z")
.tag("railmount") .workplane()
.end() .tag("railmount")
) .end()
)
hgr20 = HGR20(plate.workplaneFromTagged("railmount"), 300) hgr20 = HGR20(plate.workplaneFromTagged("railmount"), 300)
plate2 = hgr20.holes(plate) plate2 = hgr20.holes(plate)
hgrtest = hgr20.rail() hgrtest = hgr20.rail()
carriage = hgr20.carriage(0) carriage = hgr20.carriage(0)
plate3 = (cq.Workplane("XY") plate3 = (
cq.Workplane("XY")
.copyWorkplane(carriage.workplaneFromTagged("mountingholes")) .copyWorkplane(carriage.workplaneFromTagged("mountingholes"))
.rect(200, 200) .rect(200, 200)
.extrude(5) .extrude(5)
) )
plate3 = hgr20.carriageHoles(plate3, 0) plate3 = hgr20.carriageHoles(plate3, 0)
tube1 = tubing(500, inch(2), inch(1), inch(0.062), cq.Workplane("XZ")) tube1 = tubing(500, inch(2), inch(1), inch(0.062), cq.Workplane("XZ"))
ball_screw = SFU1204(cq.Workplane(), 500) ball_screw = SFU1204(cq.Workplane(), 500)
#show_object(plate2) # show_object(plate2)
#show_object(hgrtest) # show_object(hgrtest)
#show_object(carriage) # show_object(carriage)
#show_object(plate3) # show_object(plate3)
#show_object(tube1) # show_object(tube1)
show_object(ball_screw.ballscrew()) show_object(ball_screw.ballscrew())
show_object(ball_screw.nut(200)) show_object(ball_screw.nut(200))
nut_holder = (cq.Workplane("XZ") nut_holder = (
.transformed(offset=(0, 0, -200-50)) cq.Workplane("XZ")
.transformed(offset=(0, 0, -200 - 50))
.rect(40, 30) .rect(40, 30)
.extrude(50) .extrude(50)
.faces(">z") .faces(">z")
@ -429,7 +452,8 @@ if __name__ == "__main__":
fixed = ball_screw.fixedBearing() fixed = ball_screw.fixedBearing()
show_object(nut_holder) show_object(nut_holder)
show_object(fixed) show_object(fixed)
bearing_holder = (cq.Workplane("XZ") bearing_holder = (
cq.Workplane("XZ")
.transformed(offset=(0, 0, 0)) .transformed(offset=(0, 0, 0))
.rect(60, 80) .rect(60, 80)
.extrude(20) .extrude(20)
@ -440,7 +464,8 @@ if __name__ == "__main__":
show_object(bearing_holder) show_object(bearing_holder)
bearing2 = ball_screw.floatingBearing() bearing2 = ball_screw.floatingBearing()
show_object(bearing2) show_object(bearing2)
bearing_holder2 = (cq.Workplane("XZ") bearing_holder2 = (
cq.Workplane("XZ")
.transformed(offset=(0, 0, -540)) .transformed(offset=(0, 0, -540))
.rect(60, 80) .rect(60, 80)
.extrude(20) .extrude(20)
@ -450,4 +475,5 @@ if __name__ == "__main__":
bearing_holder2 = ball_screw.floatingBearingHoles(bearing_holder2) bearing_holder2 = ball_screw.floatingBearingHoles(bearing_holder2)
show_object(bearing_holder2) show_object(bearing_holder2)
#show_object(cq.Workplane().placeSketch(HGR20.rail_sketch().assemble()).extrude(10)) # show_object(cq.Workplane().placeSketch(HGR20.rail_sketch().assemble()).extrude(10))