Add z stepper mount and holes in z bracket
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parent
e0debae8ce
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c4f687ea99
115
gantry.py
115
gantry.py
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@ -402,7 +402,10 @@ class Carriage:
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.center(-x - HGR20.L - x_carriage_spacing / 2, -x_rail_spacing / 2)
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.transformed(rotate=(180, 0, 0))
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.rect(60, 60)
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.extrude(64)
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.extrude(64 - 8)
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.faces(">z")
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.rect(60, 32)
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.extrude(8)
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)
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self.x_nut_mount = gantry.ball_screw_model.nutHoles(
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self.x_nut_mount, x + carriage_w / 2
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@ -418,7 +421,7 @@ class Carriage:
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s.copyWorkplane(back)
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.center(-x - HGR20.L - x_carriage_spacing / 2, -x_rail_spacing / 2)
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.transformed(rotate=(0 if forward else 180, 0, 0))
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.rect(44, 44)
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.rect(48, 48)
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.vertices()
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.hole(5)
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)
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@ -508,7 +511,7 @@ class Carrier:
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angle_z = 0.188 * 25.4
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angle_w = 2.0 * 25.4
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self.stepper_mount = (
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self.stepper_bracket = (
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cq.Workplane()
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.copyWorkplane(self.plane)
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.transformed(offset=(-200 / 2, z_rail_len / 2, 0), rotate=(0, 90, 0))
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@ -520,10 +523,106 @@ class Carrier:
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.finalize()
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.extrude(200)
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)
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self.stepper_bracket = carriage.left_rail.holes(self.stepper_bracket)
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self.stepper_bracket = carriage.right_rail.holes(self.stepper_bracket)
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self.stepper_bracket = (
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self.stepper_bracket.copyWorkplane(
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self.ballscrew_model.w.transformed(rotate=(90, 0, 0))
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).hole(32)
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# .copyWorkplane(self.ballscrew_model.w.transformed(rotate=(90, 0, 0)))
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# .pushPoints([(40, 0)])
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# .hole(5)
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)
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self.stepper_bracket = self.ballscrew_model.fixedBearingHoles(
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self.stepper_bracket
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)
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offset = (
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self.ballscrew_model.w.vertices().val()
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- self.plane.transformed(
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offset=(0, z_rail_len / 2 + 10, 0), rotate=(-90, 0, 0)
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)
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.vertices()
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.val()
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)
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# print("offset: ", offset)
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self.stepper_mount = (
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cq.Workplane()
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.copyWorkplane(
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self.plane.transformed(
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offset=(0, z_rail_len / 2 + 10, 0), rotate=(-90, 0, 0)
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)
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)
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.tag("flange_center")
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.rect(100, 50)
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.extrude(5)
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.workplaneFromTagged("flange_center")
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.transformed(rotate=(180, 0, 0))
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.rect(90, 25, forConstruction=True)
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.vertices()
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.hole(5)
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.copyWorkplane(
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self.plane.transformed(
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offset=(0, z_rail_len / 2 + 10, 0), rotate=(-90, 0, 0)
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).transformed(offset=(0, -offset.y, 0), rotate=(0, 0, 30))
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)
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.tag("stepper_center")
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.rect(58.4, 58.4)
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.extrude(5)
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.workplaneFromTagged("stepper_center")
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.transformed(rotate=(180, 0, 0))
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.rect(47.41, 47.41, forConstruction=True)
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.vertices()
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.hole(5)
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.copyWorkplane(self.ballscrew_model.w.transformed(rotate=(90, 0, 0)))
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.hole(40)
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)
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self.stepper_bracket = (
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self.stepper_bracket.copyWorkplane(
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self.stepper_mount.workplaneFromTagged("stepper_center")
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)
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.rect(47.41, 47.41, forConstruction=True)
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.vertices()
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.hole(5)
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.copyWorkplane(self.stepper_mount.workplaneFromTagged("flange_center"))
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.transformed(rotate=(0, 0, 0))
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.rect(90, 25, forConstruction=True)
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.vertices()
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.hole(5)
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)
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self.stepper_lower_spacer = (
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cq.Workplane()
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.copyWorkplane(self.fixed_bearing.workplaneFromTagged("mounting face"))
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.rect(60, 40)
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.extrude(16)
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.copyWorkplane(self.ballscrew_model.w.transformed(rotate=(90, 0, 0)))
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.rect(36, 36)
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.cutThruAll()
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)
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self.stepper_lower_spacer = self.ballscrew_model.fixedBearingHoles(
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self.stepper_lower_spacer
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)
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self.stepper_mount = self.ballscrew_model.fixedBearingHoles(self.stepper_mount)
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def bracket_mounting_holes(s):
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points = [
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(x, y)
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for x in [-93, -83, 93, 83]
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for y in [-z_ballscrew_len / 2 + 30, -z_ballscrew_len / 2 + 10]
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]
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return (
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s.copyWorkplane(self.plane.transformed(rotate=(180, 0, 0)))
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.pushPoints(points)
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.hole(5)
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)
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self.plate = bracket_mounting_holes(self.plate)
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self.stepper_bracket = bracket_mounting_holes(self.stepper_bracket)
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ballscrew_offset = z_ballscrew_len / 2 + carriage.z / 2 - z
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carriage.z_nut = self.ballscrew_model.nut(ballscrew_offset)
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# TODO add carriage nut mount to carriage
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carriage.z_nut_mount = (
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cq.Workplane()
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.copyWorkplane(carriage.plate.workplaneFromTagged("carriage_plate"))
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@ -538,7 +637,7 @@ class Carrier:
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)
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)
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.rect(
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44, 44
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48, 48
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) # mounting holes; these need to line up with the x nut mounting holes
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.vertices()
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.hole(5)
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@ -561,8 +660,10 @@ class Carrier:
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.add(self.plate, name="z plate")
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.add(self.ballscrew, name="z ballscrew")
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.add(self.fixed_bearing, name="z fixed bearing")
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.add(self.floating_bearing, name="z floating bearing")
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.add(self.stepper_mount, name="stepper motor-ballscrew mount")
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# .add(self.floating_bearing, name="z floating bearing")
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.add(self.stepper_bracket, name="stepper motor-ballscrew bracket")
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.add(self.stepper_lower_spacer, name="stepper motor lower spacer")
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.add(self.stepper_mount, name="stepper mount")
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)
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