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https://github.com/gumyr/build123d.git
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140 lines
4.4 KiB
Python
140 lines
4.4 KiB
Python
from build123d import *
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class JointBox(Part):
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"""A filleted box with joints
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A box of the given dimensions with all of the edges filleted.
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Args:
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length (float): box length
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width (float): box width
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height (float): box height
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radius (float): edge radius
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taper (float): vertical taper in degrees
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"""
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def __init__(
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self,
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length: float,
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width: float,
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height: float,
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radius: float = 0.0,
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taper: float = 0.0,
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):
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# Create the object
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obj = extrude(Rectangle(length, width), amount=height, taper=taper)
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if radius != 0.0:
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obj = fillet(*obj.edges(), radius=radius, target=obj)
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obj -= Rot(0, 90, 0) * Cylinder(width / 4, length)
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# Initialize the Part class with the new OCCT object
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super().__init__(obj.wrapped)
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#
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# Base Object
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#
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# base = JointBox(10, 10, 10)
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# base = JointBox(10, 10, 10).locate(Location(Vector(1, 1, 1)))
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# base = JointBox(10, 10, 10).locate(Location(Vector(1, 1, 1), (1, 0, 0), 5))
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loc = Location(Vector(1, 1, 1), (1, 1, 1), 30)
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base = loc * JointBox(10, 10, 10, taper=3)
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base_top_edges = base.edges().filter_by(loc.x_axis).group_by(loc.z_axis)[-1]
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#
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# Rigid Joint
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#
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fixed_arm = JointBox(1, 1, 5, 0.2)
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j1 = RigidJoint(
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"side", base, Plane(base.faces().sort_by(loc.x_axis).last).to_location()
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)
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j2 = RigidJoint(
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"top", fixed_arm, (-Plane(fixed_arm.faces().sort_by().last)).to_location()
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)
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base.joints["side"].connect_to(fixed_arm.joints["top"])
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# or
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# j1.connect_to(j2)
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#
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# Hinge
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#
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hinge_arm = JointBox(2, 1, 10, taper=1)
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swing_arm_hinge_edge = (
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hinge_arm.edges()
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.group_by(SortBy.LENGTH)[-1]
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.sort_by(Axis.X)[-2:]
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.sort_by(Axis.Y)[0]
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)
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swing_arm_hinge_axis = swing_arm_hinge_edge.to_axis()
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base_corner_edge = base.edges().sort_by(Axis((0, 0, 0), (1, 1, 0)))[-1]
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base_hinge_axis = base_corner_edge.to_axis()
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j3 = RevoluteJoint("hinge", base, axis=base_hinge_axis, angular_range=(0, 180))
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j4 = RigidJoint("corner", hinge_arm, swing_arm_hinge_axis.to_location())
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base.joints["hinge"].connect_to(hinge_arm.joints["corner"], angle=90)
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#
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# Slider
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#
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slider_arm = JointBox(4, 1, 2, 0.2)
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s1 = LinearJoint(
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"slide",
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base,
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axis=Edge.make_mid_way(*base_top_edges, 0.67).to_axis(),
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linear_range=(0, base_top_edges[0].length),
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)
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s2 = RigidJoint("slide", slider_arm, Location(Vector(0, 0, 0)))
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base.joints["slide"].connect_to(slider_arm.joints["slide"], position=8)
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# s1.connect_to(s2,8)
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#
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# Cylindrical
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#
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hole_axis = Axis(
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base.faces().sort_by(Axis.Y)[0].center(),
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-base.faces().sort_by(Axis.Y)[0].normal_at(),
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)
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screw_arm = JointBox(1, 1, 10, 0.49)
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j5 = CylindricalJoint("hole", base, hole_axis, linear_range=(-10, 10))
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j6 = RigidJoint("screw", screw_arm, screw_arm.faces().sort_by(Axis.Z)[-1].location)
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j5.connect_to(j6, position=-1, angle=90)
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#
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# PinSlotJoint
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#
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j7 = LinearJoint(
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"slot",
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base,
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axis=Edge.make_mid_way(*base_top_edges, 0.33).to_axis(),
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linear_range=(0, base_top_edges[0].length),
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)
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pin_arm = JointBox(2, 1, 2)
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j8 = RevoluteJoint("pin", pin_arm, axis=Axis.Z, angular_range=(0, 360))
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j7.connect_to(j8, position=6, angle=60)
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#
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# BallJoint
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#
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j9 = BallJoint("socket", base, Plane(base.faces().sort_by(Axis.X)[0]).to_location())
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ball = JointBox(2, 2, 2, 0.99)
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j10 = RigidJoint("ball", ball, Location(Vector(0, 0, 1)))
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j9.connect_to(j10, angles=(10, 20, 30))
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if "show_object" in locals():
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show_object(base, name="base", options={"alpha": 0.8})
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show_object(base.joints["side"].symbol, name="side joint")
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show_object(base.joints["hinge"].symbol, name="hinge joint")
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show_object(base.joints["slide"].symbol, name="slot joint")
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show_object(base.joints["slot"].symbol, name="pin slot joint")
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show_object(base.joints["hole"].symbol, name="hole")
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show_object(base.joints["socket"].symbol, name="socket joint")
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show_object(hinge_arm.joints["corner"].symbol, name="hinge_arm joint")
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show_object(fixed_arm, name="fixed_arm", options={"alpha": 0.6})
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show_object(fixed_arm.joints["top"].symbol, name="fixed_arm joint")
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show_object(hinge_arm, name="hinge_arm", options={"alpha": 0.6})
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show_object(slider_arm, name="slider_arm", options={"alpha": 0.6})
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show_object(pin_arm, name="pin_arm", options={"alpha": 0.6})
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show_object(slider_arm.joints["slide"].symbol, name="slider attachment")
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show_object(pin_arm.joints["pin"].symbol, name="pin axis")
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show_object(screw_arm, name="screw_arm")
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show_object(ball, name="ball", options={"alpha": 0.6})
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