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

Add holes for mounting alignment plates to base, and x stepper mount

This commit is contained in:
Kelvin Ly 2025-03-20 22:48:26 -04:00
parent 0d2eff8804
commit 929cd9430f
2 changed files with 111 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

115
gantry.py
View File

@ -141,10 +141,28 @@ class Gantry:
w.copyWorkplane(right_bearing_base)
.rect(tube_h, x_rail_spacing - tube_w)
.extrude(x_mount_z)
.copyWorkplane(right_bearing_base)
.center(-4, 0)
.rect(35, 35)
.center(-ballscrew_x_offset, 0)
.tag("ballscrew_center")
.circle(12 / 2)
.extrude(20, combine="s")
.workplaneFromTagged("ballscrew_center")
.center(35 / 2 - 4 / 2, 0)
.rect(4, 35)
.extrude(20, combine="s")
.workplaneFromTagged("ballscrew_center")
.center(-35 / 2 + 4 / 2, 0)
.rect(4, 35)
.extrude(20, combine="s")
.workplaneFromTagged("ballscrew_center")
.center(0, -35 / 2 + 4 / 2)
.rect(25, 4)
.extrude(20, combine="s")
.workplaneFromTagged("ballscrew_center")
.center(0, 35 / 2 - 4 / 2)
.rect(25, 4)
.extrude(20, combine="s")
# .rect(35, 35)
# .extrude(20, combine="s")
)
self.right_bearing_mount = self.ball_screw_model.fixedBearingHoles(
self.right_bearing_mount
@ -155,6 +173,73 @@ class Gantry:
.rect(tube_h, x_rail_spacing - tube_w)
.extrude(x_mount_z)
)
# this doesn't work for some reason, i guess just use the fixed bearing mount flipped
self.left_bearing_mount = self.ball_screw_model.floatingBearingHoles(
self.left_bearing_mount
)
points = [(40 * (i - 5.5), y) for i in range(12) for y in [-18, 18]]
points += [
(8 * i + j, y)
for i in range(-2, 3)
for y in [-18, 18]
for j in [column_spacing / 2, -column_spacing / 2]
]
top_w = cq.Workplane().copyWorkplane(self.upper_front_plate)
bot_w = cq.Workplane().copyWorkplane(self.lower_front_plate)
def holes(w, ref):
return w.copyWorkplane(ref).pushPoints(points).hole(3)
self.upper_front_plate = holes(self.upper_front_plate, top_w)
self.upper_back_plate = holes(self.upper_back_plate, top_w)
# self.upper = top_holes(self.upper)
self.lower_front_plate = holes(self.lower_front_plate, bot_w)
self.lower_back_plate = holes(self.lower_back_plate, bot_w)
# self.lower = top_holes(self.lower)
stepper_mount_w = w.transformed(
offset=(
column_spacing / 2 + tube_w / 2,
ballscrew_x_offset,
(upper_center + lower_center) / 2,
),
rotate=(0, 90, 0),
)
self.stepper_mount = (
cq.Workplane()
.copyWorkplane(
stepper_mount_w.transformed(offset=(0, 0, 0), rotate=(0, 0, 45))
)
.rect(58.4, 58.4)
.extrude(5)
.copyWorkplane(
stepper_mount_w.transformed(offset=(0, -ballscrew_x_offset, 0))
)
.rect(88, tube_h)
.extrude(5)
.copyWorkplane(
stepper_mount_w.transformed(offset=(0, 0, 0), rotate=(180, 0, 45))
)
.rect(47.41, 47.41, forConstruction=True)
.vertices()
.hole(5)
.copyWorkplane(
stepper_mount_w.transformed(offset=(0, 0, 0), rotate=(180, 0, 0))
)
.hole(40)
.copyWorkplane(
stepper_mount_w.transformed(offset=(0, -ballscrew_x_offset, 5))
)
.rect(78, 30)
.vertices()
.hole(5)
# .copyWorkplane(stepper_mount_w)
# .circle(40)
# .extrude(10)
)
self.stepper_mount = self.ball_screw_model.fixedBearingHoles(self.stepper_mount)
def assembly(self):
return (
@ -174,6 +259,7 @@ class Gantry:
.add(self.floating_bearing, name="floating bearing")
.add(self.right_bearing_mount, name="fixed bearing mount")
.add(self.left_bearing_mount, name="floating bearing mount")
.add(self.stepper_mount, name="stepper mount")
)
@ -339,6 +425,10 @@ class Carrier:
.transformed(offset=(0, 0, z_spacer_z))
.rect(200, z_rail_len)
.extrude(10)
.copyWorkplane(self.plane)
.center(0, z_rail_len / 2 - 40 / 2)
.rect(68, 40)
.extrude(20, combine="s")
)
self.plate = carriage.left_rail.holes(self.plate)
self.plate = carriage.right_rail.holes(self.plate)
@ -349,7 +439,7 @@ class Carrier:
self.plane.transformed(
offset=(
0,
z_ballscrew_len / 2,
z_ballscrew_len / 2 + 20,
# 25,
z_spacer_z - 25 + 5, # offset into the spindle plate 5mm
), # -(HGR20.H - z_spacer_z) / 2 - 1.2),
@ -361,6 +451,21 @@ class Carrier:
self.fixed_bearing = self.ballscrew_model.fixedBearing()
self.floating_bearing = self.ballscrew_model.floatingBearing()
angle_z = 0.188 * 25.4
angle_w = 2.0 * 25.4
self.stepper_mount = (
cq.Workplane()
.copyWorkplane(self.plane)
.transformed(offset=(-200 / 2, z_rail_len / 2, 0), rotate=(0, 90, 0))
.sketch()
.push([(-10 - 10 - angle_z + angle_w / 2, angle_z / 2 + 5)])
.rect(angle_w, angle_z)
.push([(-10 - 10 - angle_z / 2, 5 + angle_z - angle_w / 2)])
.rect(angle_z, angle_w)
.finalize()
.extrude(200)
)
carriage.z_nut = self.ballscrew_model.nut(z_ballscrew_len / 2 + carriage.z)
# TODO add carriage nut mount to carriage
@ -373,6 +478,7 @@ class Carrier:
.add(self.ballscrew, name="z ballscrew")
.add(self.fixed_bearing, name="z fixed bearing")
.add(self.floating_bearing, name="z floating bearing")
.add(self.stepper_mount, name="stepper motor/ballscrew mount")
)
@ -430,4 +536,3 @@ show_object(full_assembly)
# show_object(ca.assembly())
# show_object(c.assembly())
# show_object(g.assembly())

3
utils.py
View File

@ -203,7 +203,7 @@ class SFU1204:
Y = 10.8
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 - 20, 0), rotate=(90, 0, 0))
solid = (
solid.copyWorkplane(w)
.center(0, -E / 2)
@ -476,4 +476,3 @@ if __name__ == "__main__":
show_object(bearing_holder2)
# show_object(cq.Workplane().placeSketch(HGR20.rail_sketch().assemble()).extrude(10))