155 lines
8.6 KiB
Python
155 lines
8.6 KiB
Python
from cadquery import *
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import math
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import logging
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logger = logging.getLogger()
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tabletop_depth = 800 # currently, almost all parameters are derived from the table depth
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#tabletop_depth = 600
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alpha_max = 70
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tabletop_adjuster_assembly_spacing = 100 # symmetric distancing assumed
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# cube in adjuster assembly
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feet_adjuster_width = 60 # feet_adjuster is moving part inside adjuster assembly
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feet_adjuster_lenght = 60
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feet_adjuster_height = 60
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adjuster_assembly_wall_thickness = 20 # might be different for front and back...
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adjuster_assembly_slider_width = 10
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adjuster_assembly_length = tabletop_depth - 2*tabletop_adjuster_assembly_spacing
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adjuster_assembly_width = feet_adjuster_width + 2*adjuster_assembly_wall_thickness
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adjuster_assembly_height = feet_adjuster_height + 2*adjuster_assembly_wall_thickness
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bore_holes_distance_feet_adjuster = adjuster_assembly_length - 2*adjuster_assembly_wall_thickness - feet_adjuster_width
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ld = bore_holes_distance_feet_adjuster
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lower_feet_bore_holes_distance = bore_holes_distance_feet_adjuster # this is only the case, if min feet angle is 45 degrees
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lower_h = ld * math.sqrt(2)*math.sin(math.radians(alpha_max))
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lower_feet_assambly_pivot_point_from_fixed_leg = ld * math.sqrt(2)*math.cos(math.radians(alpha_max))
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lower_feet_assambly_pivot_point_from_moving_end = ld - lower_feet_assambly_pivot_point_from_fixed_leg
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logger.info(f"Lower h is: {lower_h} (between joins of leg only)")
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lower_foot_width = 80
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lower_foot_height = 50
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lower_foot_length = 2*ld/math.sqrt(2)
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lower_feet_assembly_base_plate_height = 20
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lower_feet_assembly_side_wall_thickness = 25
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lower_feet_assembly_width = 100
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lower_feet_assembly_length = lower_feet_bore_holes_distance + lower_foot_height # 2* 1/2 lower_foot_height
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lower_feet_assembly_height = lower_feet_assembly_base_plate_height + lower_foot_height
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lower_feet_assembly_side_wall_height = lower_foot_height
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lower_feet_assembly_side_wall_radius = lower_foot_height/2
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lower_feet_assembly_side_wall_bearing_hole_distance_from_outer = lower_feet_assembly_side_wall_radius
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lower_feet_assembly_side_wall_bearing_hole_distance_from_bottom = lower_feet_assembly_side_wall_radius
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lower_feet_assembly_bearing_hole_distance_from_assembly_bottom = lower_feet_assembly_base_plate_height + lower_foot_height/2
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lower_feet_assembly_bearing_hole_radius = 11
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lower_feet_assembly_bearing_hole_depth = 10
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lower_feet_assembly_pin_diameter = 10
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## parameter end!
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def get_adjuster_assembly_old():
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left = Workplane("XZ").vLine(adjuster_assembly_height/2).hLine(adjuster_assembly_wall_thickness+adjuster_assembly_slider_width).vLine(-(adjuster_assembly_height-feet_adjuster_height)/2).hLine(-adjuster_assembly_slider_width).vLineTo(0).mirrorX().extrude(adjuster_assembly_length-2*adjuster_assembly_wall_thickness)
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right = left.mirror("YZ", basePointVector = (adjuster_assembly_width/2,0,0))
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left = left.union(right)
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return left
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#return Workplane("XY").box(adjuster_assembly_wall_thickness,adjuster_assembly_length,adjuster_assembly_height).center(10,0).box(10,10,10)
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def get_adjuster_assembly_left():
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return Workplane("XZ").vLine(adjuster_assembly_height/2).hLine(adjuster_assembly_wall_thickness+adjuster_assembly_slider_width).vLine(-(adjuster_assembly_height-feet_adjuster_height)/2).hLine(-adjuster_assembly_slider_width).vLineTo(0).mirrorX().extrude(adjuster_assembly_length-2*adjuster_assembly_wall_thickness)
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def get_adjuster_assembly_right():
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#left.mirror("YZ", basePointVector = (adjuster_assembly_width/2,0,0))
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return get_adjuster_assembly_left().mirror("YZ")
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def get_adjuster_assembly_front_back_plate():
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return Workplane("XY").box(adjuster_assembly_width,adjuster_assembly_wall_thickness,adjuster_assembly_height).faces(">Y").workplane().hole(22)
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def get_adjuster_assembly():
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a = Assembly(None)
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a.add(get_adjuster_assembly_left(), name="l")
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a.add(get_adjuster_assembly_right(), name="r", color=Color("red"))
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a.add(get_adjuster_assembly_front_back_plate(), name="f", color=Color("orange"))
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a.add(get_adjuster_assembly_front_back_plate(), name="b")
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a.constrain("l@faces@<Y", "b@faces@>Y", "Plane")
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a.constrain("l@faces@>Y", "f@faces@<Y", "Plane")
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a.constrain("r@faces@<Y", "b@faces@>Y", "Plane")
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a.constrain("r@faces@>Y", "f@faces@<Y", "Plane")
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a.constrain("r@faces@>X", "f@faces@>X", "Axis")
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a.constrain("l@faces@<X", "f@faces@<X", "Axis")
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a.constrain("r@faces@>X", "b@faces@>X", "Axis")
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a.constrain("l@faces@<X", "b@faces@<X", "Axis")
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a.solve()
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return a
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show_object(get_adjuster_assembly())
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# actual parts:
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def get_lower_foot_base_plate():
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return Workplane("XY").box(lower_feet_assembly_width,lower_feet_assembly_length,lower_feet_assembly_base_plate_height)\
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.edges("|Z").fillet(lower_feet_assembly_side_wall_thickness/2)
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def get_lower_foot_side_wall_left():
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lower_foot_side_wall_left = Workplane("YZ").box(lower_feet_assembly_length,lower_feet_assembly_side_wall_height,lower_feet_assembly_side_wall_thickness)\
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.faces("|Y").edges(">Z").fillet(lower_feet_assembly_side_wall_radius)\
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.faces("-X").edges(">Z").fillet(lower_feet_assembly_side_wall_thickness/2)\
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.faces("+X").workplane()\
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.center(lower_feet_assembly_length/2-lower_feet_assembly_side_wall_bearing_hole_distance_from_outer,0).hole(2*lower_feet_assembly_bearing_hole_radius,lower_feet_assembly_bearing_hole_depth)\
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lower_foot_bearing_pin_slide = Workplane("YZ",origin=((lower_feet_assembly_side_wall_thickness-lower_feet_assembly_bearing_hole_depth)/2,\
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-(lower_feet_bore_holes_distance-lower_feet_assambly_pivot_point_from_moving_end)/2,\
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0))\
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.box(lower_feet_assambly_pivot_point_from_moving_end,lower_feet_assembly_pin_diameter,lower_feet_assembly_bearing_hole_depth)
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lower_foot_bearing_pin_slide = lower_foot_bearing_pin_slide\
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.union(Workplane("YZ",origin=(lower_feet_assembly_side_wall_thickness/2-lower_feet_assembly_bearing_hole_depth,
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-(lower_feet_bore_holes_distance/2-lower_feet_assambly_pivot_point_from_moving_end),0.00001))\
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.circle(lower_feet_assembly_pin_diameter/2).extrude(lower_feet_assembly_bearing_hole_depth))\
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.union(Workplane("YZ",origin=(lower_feet_assembly_side_wall_thickness/2-lower_feet_assembly_bearing_hole_depth,
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-(lower_feet_bore_holes_distance/2),0))\
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.circle(lower_feet_assembly_pin_diameter/2).extrude(lower_feet_assembly_bearing_hole_depth))
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lower_foot_side_wall_left = lower_foot_side_wall_left.cut(lower_foot_bearing_pin_slide)
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return lower_foot_side_wall_left
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def get_lower_foot_side_wall_right():
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return get_lower_foot_side_wall_left().mirror(mirrorPlane="YZ")
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def get_lower_foot_front_wall():
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return Workplane("XY").box(lower_feet_assembly_width-2*lower_feet_assembly_side_wall_thickness,lower_feet_assembly_side_wall_radius,lower_feet_assembly_side_wall_radius)\
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.faces(">X").vertices(">YZ").workplane(centerOption="CenterOfMass")\
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.circle(lower_feet_assembly_side_wall_radius).cutThruAll()
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def get_lower_foot_end_wall():
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return get_lower_foot_front_wall().mirror(mirrorPlane="XZ")
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def get_lower_foot_assembly():
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return Assembly(get_lower_foot_base_plate(), name='base_plate')\
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.add(get_lower_foot_side_wall_left(), name='wall_left',color=Color(1,0,1,0.5), loc=Location(Vector(-(lower_feet_assembly_width-lower_feet_assembly_side_wall_thickness)/2,0,lower_feet_assembly_base_plate_height/2+lower_feet_assembly_side_wall_radius)))\
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.add(get_lower_foot_side_wall_right(), name='wall_right',color=Color(0.5,0,1,0.5), loc=Location(Vector((lower_feet_assembly_width-lower_feet_assembly_side_wall_thickness)/2,0,lower_feet_assembly_base_plate_height/2+lower_feet_assembly_side_wall_radius)))\
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.add(get_lower_foot_front_wall(), name='wall_front',color=Color(1,0,1,0.5), loc=Location(Vector(0,-(lower_feet_assembly_length-lower_feet_assembly_side_wall_radius)/2,lower_feet_assembly_base_plate_height)))\
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.add(get_lower_foot_end_wall(), name='wall_end',color=Color(1,0,1,0.5), loc=Location(Vector(0,(lower_feet_assembly_length-lower_feet_assembly_side_wall_radius)/2,lower_feet_assembly_base_plate_height)))
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#show_object(get_lower_foot_assembly())
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test_a = Assembly()\
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.add(get_lower_foot_assembly(), name="left_foot_assembly", color=Color("red"), loc=Location(Vector(0,0,0)))\
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.add(get_lower_foot_assembly(), name="right_foot_assembly", color=Color("white"), loc=Location(Vector(500,0,0)))
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#show_object(get_lower_foot_front_wall())
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#show_object(get_lower_foot_end_wall())
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#show_object(assy)
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