Adjust some stuff; almost have the z axis ballscrew where I want it to be; TODO move it further up, figure out spacer and mount situation
This commit is contained in:
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d71cbf1391
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391
gantry.py
391
gantry.py
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@ -6,15 +6,26 @@ import localselectors
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tube_w = inch(2.0)
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tube_h = inch(1.5)
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tube_wall = inch(0.075) # 1.519 #inch(0.062)
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column_spacing = 500
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tube_wall = inch(0.075) # 1.519 #inch(0.062)
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column_spacing = 560
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column_h = 400
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plate_z = 2.54
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plate_z2 = 10
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x_mount_z = 5
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ballscrew_x_offset = 4
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ballscrew_len = 500
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column_spacing = (
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ballscrew_len - 15 - 39 + 25 - 10 + 7 / 2 + 20 / 2 + 2 * x_mount_z + tube_w
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)
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print("column_spacing = ", column_spacing)
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x_rail_spacing = 240
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x_carriage_spacing = 120
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class Gantry:
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def __init__(self, w):
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self.left = tubing(
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@ -22,20 +33,26 @@ class Gantry:
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tube_w,
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tube_h,
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tube_wall,
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w.transformed(offset=(-0.5*column_spacing, 0, 0)))
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w.transformed(offset=(-0.5 * column_spacing, 0, 0)),
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)
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self.right = tubing(
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column_h,
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tube_w,
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tube_h,
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tube_wall,
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w.transformed(offset=(0.5*column_spacing, 0, 0)))
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upper_center = column_h - 0.5*tube_w
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w.transformed(offset=(0.5 * column_spacing, 0, 0)),
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)
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upper_center = column_h - 0.5 * tube_w
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self.upper = tubing(
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column_spacing - tube_w,
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tube_h,
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tube_w,
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tube_wall,
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w.transformed(offset=(-0.5*column_spacing+0.5*tube_w, 0, upper_center), rotate=(90, 90, 0)))
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w.transformed(
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offset=(-0.5 * column_spacing + 0.5 * tube_w, 0, upper_center),
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rotate=(90, 90, 0),
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),
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)
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lower_center = upper_center - x_rail_spacing
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self.lower = tubing(
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column_spacing - tube_w,
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@ -43,39 +60,68 @@ class Gantry:
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tube_w,
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tube_wall,
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w.transformed(
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offset=(
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-0.5*column_spacing+0.5*tube_w,
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0,
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lower_center), rotate=(90, 90, 0)))
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offset=(-0.5 * column_spacing + 0.5 * tube_w, 0, lower_center),
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rotate=(90, 90, 0),
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),
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)
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self.upper_rail = HGR20(
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w.transformed(
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offset=(0, 0.5*tube_h + plate_z, upper_center),
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rotate=(-90, 0, 0)
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), column_spacing + tube_w)
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offset=(0, 0.5 * tube_h + plate_z, upper_center), rotate=(-90, 0, 0)
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),
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column_spacing + tube_w,
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)
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self.lower_rail = HGR20(
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w.transformed(
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offset=(0, 0.5*tube_h + plate_z, lower_center),
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rotate=(-90, 0, 0)
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), column_spacing + tube_w)
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offset=(0, 0.5 * tube_h + plate_z, lower_center), rotate=(-90, 0, 0)
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),
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column_spacing + tube_w,
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)
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self.upper_front_plate = (
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w.transformed(offset=(0, tube_h/2, upper_center), rotate=(-90, 0, 0))
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.rect(column_spacing + tube_w, tube_w)
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.extrude(plate_z)
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w.transformed(offset=(0, tube_h / 2, upper_center), rotate=(-90, 0, 0))
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.rect(column_spacing + tube_w, tube_w)
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.extrude(plate_z)
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)
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self.lower_front_plate = (
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w.transformed(offset=(0, tube_h/2, lower_center), rotate=(-90, 0, 0))
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.rect(column_spacing + tube_w, tube_w)
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.extrude(plate_z)
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w.transformed(offset=(0, tube_h / 2, lower_center), rotate=(-90, 0, 0))
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.rect(column_spacing + tube_w, tube_w)
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.extrude(plate_z)
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)
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self.upper_back_plate = (
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w.transformed(offset=(0, -tube_h/2, upper_center), rotate=(90, 0, 0))
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.rect(column_spacing + tube_w, tube_w)
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.extrude(plate_z)
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w.transformed(offset=(0, -tube_h / 2, upper_center), rotate=(90, 0, 0))
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.rect(column_spacing + tube_w, tube_w)
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.extrude(plate_z)
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)
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self.lower_back_plate = (
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w.transformed(offset=(0, -tube_h/2, lower_center), rotate=(90, 0, 0))
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.rect(column_spacing + tube_w, tube_w)
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.extrude(plate_z)
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w.transformed(offset=(0, -tube_h / 2, lower_center), rotate=(90, 0, 0))
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.rect(column_spacing + tube_w, tube_w)
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.extrude(plate_z)
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)
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self.ball_screw_w = w.transformed(
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offset=(
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ballscrew_len / 2 - (-15 - 39 + 25 + 10 - 7 / 2 - 20 / 2) / 2,
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ballscrew_x_offset,
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(upper_center + lower_center) / 2,
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),
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rotate=(0, 0, 90),
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).transformed(rotate=(0, 90, 0))
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self.ball_screw_model = SFU1204(self.ball_screw_w, ballscrew_len)
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self.floating_mount_w = self.ball_screw_w.transformed(
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offset=(0, ballscrew_len + (-10 + 7 / 2 + 20 / 2), 0), rotate=(-90, 0, 0)
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)
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self.ball_screw = self.ball_screw_model.ballscrew()
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self.fixed_bearing = self.ball_screw_model.fixedBearing()
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self.floating_bearing = self.ball_screw_model.floatingBearing()
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self.left = self.ball_screw_model.floatingBearingHoles(self.left)
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self.right = self.ball_screw_model.fixedBearingHoles(self.right)
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self.right = (
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self.right
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# holes for the ball screw
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.copyWorkplane(self.ball_screw_w.transformed(rotate=(90, 0, 0)))
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.hole(20)
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.copyWorkplane(self.ball_screw_w.transformed(rotate=(-90, 0, 0)))
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.hole(20)
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)
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self.upper_front_plate = self.upper_rail.holes(self.upper_front_plate)
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@ -84,66 +130,118 @@ class Gantry:
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self.lower_front_plate = self.lower_rail.holes(self.lower_front_plate)
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self.lower_back_plate = self.lower_rail.holes(self.lower_back_plate)
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def assembly(self):
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return (cq.Assembly(name="gantry")
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.add(self.left, name="left column")
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.add(self.right, name="right column")
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.add(self.upper, name="upper platform")
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.add(self.lower, name="lower platform")
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.add(self.upper_rail.rail(), name="upper rail")
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.add(self.lower_rail.rail(), name="lower rail")
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.add(self.upper_front_plate, name="upper front plate")
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.add(self.lower_front_plate, name="lower front plate")
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.add(self.upper_back_plate, name="upper back plate")
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.add(self.lower_back_plate, name="lower back plate")
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right_bearing_base = (
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self.ball_screw_w.transformed(offset=(0, 0, -ballscrew_x_offset))
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.transformed(rotate=(-90, 0, 0))
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.transformed(offset=(0, 0, 15 + 39 - 25 - x_mount_z))
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.transformed(rotate=(0, 0, 90))
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)
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#assembly.test = 7
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z_rail_spacing = 120
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self.right_bearing_mount = (
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w.copyWorkplane(right_bearing_base)
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.rect(tube_h, x_rail_spacing - tube_w)
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.extrude(x_mount_z)
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.copyWorkplane(right_bearing_base)
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.center(-4, 0)
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.rect(35, 35)
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.extrude(20, combine="s")
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)
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self.right_bearing_mount = self.ball_screw_model.fixedBearingHoles(
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self.right_bearing_mount
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)
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self.left_bearing_mount = (
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w.copyWorkplane(self.floating_mount_w)
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.transformed(offset=(0, ballscrew_x_offset, 0), rotate=(0, 0, 90))
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.rect(tube_h, x_rail_spacing - tube_w)
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.extrude(x_mount_z)
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)
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def assembly(self):
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return (
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cq.Assembly(name="gantry")
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.add(self.left, name="left column")
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.add(self.right, name="right column")
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.add(self.upper, name="upper platform")
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.add(self.lower, name="lower platform")
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.add(self.upper_rail.rail(), name="upper rail")
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.add(self.lower_rail.rail(), name="lower rail")
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.add(self.upper_front_plate, name="upper front plate")
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.add(self.lower_front_plate, name="lower front plate")
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.add(self.upper_back_plate, name="upper back plate")
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.add(self.lower_back_plate, name="lower back plate")
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.add(self.ball_screw, name="ball screw")
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.add(self.fixed_bearing, name="fixed bearing")
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.add(self.floating_bearing, name="floating bearing")
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.add(self.right_bearing_mount, name="fixed bearing mount")
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.add(self.left_bearing_mount, name="floating bearing mount")
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)
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z_rail_spacing = 110
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z_carriage_spacing = 100
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z_rail_len = 450
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z_rail_len = 400
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carriage_w = 250
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carriage_h = 300
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bolster_w = 30
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bolster_z = 25
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z_spacer_z = 10
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z_spacer_w = 40
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z_ballscrew_len = 400
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z_ballscrew_offset = 0
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class Carriage:
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def __init__(self, gantry, x=0, z=0):
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self.z = z
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self.bul = gantry.upper_rail.carriage(x)
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self.bur = gantry.upper_rail.carriage(x+x_carriage_spacing)
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self.bur = gantry.upper_rail.carriage(x + x_carriage_spacing)
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self.bll = gantry.lower_rail.carriage(x)
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self.blr = gantry.lower_rail.carriage(x+x_carriage_spacing)
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back = cq.Workplane("XZ").copyWorkplane(self.bul.workplaneFromTagged("mountingholes"))
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self.blr = gantry.lower_rail.carriage(x + x_carriage_spacing)
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back = cq.Workplane("XZ").copyWorkplane(
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self.bul.workplaneFromTagged("mountingholes")
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)
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# why doesn't this track the carriage without me adding x to it?
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self.plate = (back.center(-x-HGR20.L-x_carriage_spacing/2, -x_rail_spacing/2)
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#.rect(HGR20.L+x_carriage_spacing, HGR20.W+x_rail_spacing)
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.rect(carriage_w, carriage_h)
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.extrude(plate_z2)
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.faces(">z") # localselectors plugin
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.workplane()
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.tag("carriage_plate")
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)
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self.plate = (
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cq.Workplane()
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.copyWorkplane(back)
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.center(-x - HGR20.L - x_carriage_spacing / 2, -x_rail_spacing / 2)
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# .rect(HGR20.L+x_carriage_spacing, HGR20.W+x_rail_spacing)
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.rect(carriage_w, carriage_h)
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.extrude(plate_z2)
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.faces(">z") # localselectors plugin
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.workplane()
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.tag("carriage_plate")
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)
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self.plate = gantry.upper_rail.carriageHoles(self.plate, x)
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self.plate = gantry.upper_rail.carriageHoles(self.plate, x+x_carriage_spacing)
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self.plate = gantry.upper_rail.carriageHoles(self.plate, x + x_carriage_spacing)
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self.plate = gantry.lower_rail.carriageHoles(self.plate, x)
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self.plate = gantry.lower_rail.carriageHoles(self.plate, x+x_carriage_spacing)
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self.plate = gantry.lower_rail.carriageHoles(self.plate, x + x_carriage_spacing)
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# creating the workplane the rails of the spindle carrier
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# mount to, because HGR works from that plane forward
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self.carrier_plane = (cq.Workplane()
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self.carrier_plane = (
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cq.Workplane()
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.copyWorkplane(self.plate.workplaneFromTagged("carriage_plate"))
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.transformed(offset=(0, 0, HGR20.H), rotate=(180, 0, 0))
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)
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self.left_rail = HGR20(
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self.carrier_plane.
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transformed(offset=(z_rail_spacing/2, z, 0), rotate=(0, 0, 90)),
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z_rail_len)
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self.right_rail = HGR20(
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self.carrier_plane.
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transformed(offset=(-z_rail_spacing/2, z, 0), rotate=(0, 0, 90)),
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z_rail_len)
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)
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u_zcarriage_pos = z_rail_len/2 - HGR20.L/2 -z - z_carriage_spacing/2
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self.left_rail = HGR20(
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self.carrier_plane.transformed(
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offset=(z_rail_spacing / 2, z, 0), rotate=(0, 0, 90)
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),
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z_rail_len,
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)
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self.right_rail = HGR20(
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self.carrier_plane.transformed(
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offset=(-z_rail_spacing / 2, z, 0), rotate=(0, 0, 90)
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),
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z_rail_len,
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)
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u_zcarriage_pos = z_rail_len / 2 - HGR20.L / 2 - z - z_carriage_spacing / 2
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l_zcarriage_pos = u_zcarriage_pos + z_carriage_spacing
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self.ful = self.left_rail.carriage(u_zcarriage_pos)
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self.fll = self.left_rail.carriage(l_zcarriage_pos)
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@ -154,28 +252,46 @@ class Carriage:
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self.plate = self.left_rail.carriageHoles(self.plate, l_zcarriage_pos)
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self.plate = self.right_rail.carriageHoles(self.plate, u_zcarriage_pos)
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self.plate = self.right_rail.carriageHoles(self.plate, l_zcarriage_pos)
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self.lbolster = (cq.Workplane()
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self.ball_nut = gantry.ball_screw_model.nut(x + carriage_w / 2)
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self.lbolster = (
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cq.Workplane()
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.copyWorkplane(self.plate.workplaneFromTagged("carriage_plate"))
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.transformed(offset=(-(carriage_w - bolster_w)/2, 0, 0))
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.transformed(offset=(-(carriage_w - bolster_w) / 2, 0, 0))
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.rect(bolster_w, carriage_h)
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.extrude(bolster_z)
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)
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self.rbolster = (cq.Workplane()
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self.rbolster = (
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cq.Workplane()
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.copyWorkplane(self.plate.workplaneFromTagged("carriage_plate"))
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.transformed(offset=((carriage_w - bolster_w)/2, 0, 0))
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.transformed(offset=((carriage_w - bolster_w) / 2, 0, 0))
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.rect(bolster_w, carriage_h)
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.extrude(bolster_z)
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)
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# TODO add bolster mounting holes
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self.wp_carrier = (cq.Workplane()
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self.wp_carrier = (
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cq.Workplane()
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.copyWorkplane(self.plate.workplaneFromTagged("carriage_plate"))
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.transformed(offset=(0, -z, HGR20.H), rotate=(0, 0, 0))
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)
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)
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self.x_nut_mount = (
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cq.Workplane()
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.copyWorkplane(back)
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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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)
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# these are filled in by the carrier
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self.z_nut_mount = None
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self.z_nut = None
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def assembly(self):
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return (cq.Assembly(name="x carriage")
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assmbly = (
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cq.Assembly(name="x carriage")
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.add(self.bul, name="back ul carriage")
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.add(self.bur, name="back ur carriage")
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.add(self.bll, name="back ll carriage")
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@ -188,35 +304,130 @@ class Carriage:
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.add(self.fll, name="front ll carriage")
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.add(self.flr, name="front lr carriage")
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.add(self.lbolster, name="left bolster")
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.add(self.lbolster, name="right bolster")
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.add(self.rbolster, name="right bolster")
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.add(self.ball_nut, name="ball nut")
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.add(self.x_nut_mount, name="x nut mount")
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)
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if self.z_nut_mount is not None:
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assmbly = assmbly.add(self.z_nut_mount, name="z nut mount")
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if self.z_nut is not None:
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assmbly = assmbly.add(self.z_nut, name="z nut")
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return assmbly
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class Carrier:
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def __init__(self, carriage):
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self.plane = carriage.wp_carrier
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self.plate = (cq.Workplane()
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self.left_spacer = (
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cq.Workplane()
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.copyWorkplane(self.plane)
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.transformed(offset=(z_rail_spacing / 2, 0, 0))
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.rect(z_spacer_w, z_rail_len)
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.extrude(z_spacer_z)
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)
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self.right_spacer = (
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cq.Workplane()
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.copyWorkplane(self.plane)
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.transformed(offset=(-z_rail_spacing / 2, 0, 0))
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.rect(z_spacer_w, z_rail_len)
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.extrude(z_spacer_z)
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)
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self.plate = (
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cq.Workplane()
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.copyWorkplane(self.plane)
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.transformed(offset=(0, 0, z_spacer_z))
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.rect(200, z_rail_len)
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||||
.extrude(10))
|
||||
.extrude(10)
|
||||
)
|
||||
self.plate = carriage.left_rail.holes(self.plate)
|
||||
self.plate = carriage.right_rail.holes(self.plate)
|
||||
|
||||
self.left_spacer = carriage.left_rail.holes(self.left_spacer)
|
||||
self.right_spacer = carriage.right_rail.holes(self.right_spacer)
|
||||
|
||||
self.ballscrew_model = SFU1204(
|
||||
self.plane.transformed(
|
||||
offset=(
|
||||
0,
|
||||
z_ballscrew_len / 2,
|
||||
# 25,
|
||||
z_spacer_z - 25 + 5, # offset into the spindle plate 5mm
|
||||
), # -(HGR20.H - z_spacer_z) / 2 - 1.2),
|
||||
rotate=(180, 0, 0),
|
||||
),
|
||||
z_ballscrew_len,
|
||||
)
|
||||
self.ballscrew = self.ballscrew_model.ballscrew()
|
||||
self.fixed_bearing = self.ballscrew_model.fixedBearing()
|
||||
self.floating_bearing = self.ballscrew_model.floatingBearing()
|
||||
|
||||
carriage.z_nut = self.ballscrew_model.nut(z_ballscrew_len / 2 + carriage.z)
|
||||
# TODO add carriage nut mount to carriage
|
||||
|
||||
def assembly(self):
|
||||
return (cq.Assembly(name="z carrier")
|
||||
.add(self.plate, name="z plate"))
|
||||
return (
|
||||
cq.Assembly(name="z carrier")
|
||||
.add(self.left_spacer, name="left spacer")
|
||||
.add(self.right_spacer, name="right spacer")
|
||||
.add(self.plate, name="z plate")
|
||||
.add(self.ballscrew, name="z ballscrew")
|
||||
.add(self.fixed_bearing, name="z fixed bearing")
|
||||
.add(self.floating_bearing, name="z floating bearing")
|
||||
)
|
||||
|
||||
|
||||
class SpindleMount:
|
||||
def __init__(self, carrier, z_offset=0):
|
||||
self.plane = (
|
||||
carrier.plane.transformed(offset=(0, z_offset, z_spacer_z + 10))
|
||||
.transformed(rotate=(-90, 0, 0))
|
||||
.transformed(rotate=(0, 0, 180))
|
||||
)
|
||||
self.spindleaxis = cq.Workplane().copyWorkplane(self.plane).center(0, 54)
|
||||
self.mount = (
|
||||
cq.Workplane()
|
||||
.copyWorkplane(self.plane)
|
||||
.hLineTo(184 / 2)
|
||||
.vLineTo(17)
|
||||
.hLineTo(113 / 2)
|
||||
.vLineTo(82)
|
||||
.hLineTo(-113 / 2)
|
||||
.vLineTo(17)
|
||||
.hLineTo(-184 / 2)
|
||||
.vLineTo(0)
|
||||
.close()
|
||||
.extrude(78)
|
||||
.copyWorkplane(self.spindleaxis)
|
||||
.cylinder(78, 104 / 2, angle=180, centered=[True, True, False])
|
||||
.copyWorkplane(self.spindleaxis)
|
||||
.cylinder(78, 80 / 2, centered=[True, True, False], combine="s")
|
||||
)
|
||||
|
||||
def mounting_holes(self, w):
|
||||
# TODO
|
||||
pass
|
||||
|
||||
def assembly(self):
|
||||
return cq.Assembly(name="spindle motor mount").add(self.mount, name="mount")
|
||||
|
||||
|
||||
g = Gantry(cq.Workplane())
|
||||
c = Carriage(g, 150, 0)
|
||||
c = Carriage(g, 150, -50)
|
||||
ca = Carrier(c)
|
||||
m = SpindleMount(ca, -200)
|
||||
|
||||
# TODO add ball screws and associated assembly
|
||||
|
||||
full_assmbly = (cq.Assembly()
|
||||
full_assembly = (
|
||||
cq.Assembly()
|
||||
.add(g.assembly(), name="gantry")
|
||||
.add(c.assembly(), name="carriage")
|
||||
.add(ca.assembly(), name="carrier")
|
||||
.add(m.assembly(), name="spindle mount")
|
||||
)
|
||||
|
||||
show_object(full_assmbly)
|
||||
#show_object(ca.assembly())
|
||||
#show_object(c.assembly())
|
||||
#show_object(g.assembly())
|
||||
show_object(full_assembly)
|
||||
# show_object(ca.assembly())
|
||||
# show_object(c.assembly())
|
||||
# show_object(g.assembly())
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue