106 lines
4.8 KiB
Python
106 lines
4.8 KiB
Python
#File: Ex023_Parametric_Enclosure.py
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#To use this example file, you need to first follow the "Using CadQuery From Inside FreeCAD"
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#instructions here: https://github.com/dcowden/cadquery#installing----using-cadquery-from-inside-freecad
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#You run this example by typing the following in the FreeCAD python console, making sure to change
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#the path to this example, and the name of the example appropriately.
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#import sys
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#sys.path.append('/home/user/Downloads/cadquery/examples/FreeCAD')
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#import Ex023_Parametric_Enclosure
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#If you need to reload the part after making a change, you can use the following lines within the FreeCAD console.
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#reload(Ex023_Parametric_Enclosure)
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#You'll need to delete the original shape that was created, and the new shape should be named sequentially (Shape001, etc).
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#You can also tie these blocks of code to macros, buttons, and keybindings in FreeCAD for quicker access.
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#You can get a more information on this example at http://parametricparts.com/docs/examples.html#an-extruded-prismatic-solid
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import cadquery
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import Part
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#Parameter definitions
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p_outerWidth = 100.0 #Outer width of box enclosure
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p_outerLength = 150.0 #Outer length of box enclosure
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p_outerHeight = 50.0 #Outer height of box enclosure
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p_thickness = 3.0 #Thickness of the box walls
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p_sideRadius = 10.0 #Radius for the curves around the sides of the bo
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p_topAndBottomRadius = 2.0 #Radius for the curves on the top and bottom edges of the box
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p_screwpostInset = 12.0 #How far in from the edges the screwposts should be placed
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p_screwpostID = 4.0 #Inner diameter of the screwpost holes, should be roughly screw diameter not including threads
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p_screwpostOD = 10.0 #Outer diameter of the screwposts. Determines overall thickness of the posts
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p_boreDiameter = 8.0 #Diameter of the counterbore hole, if any
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p_boreDepth = 1.0 #Depth of the counterbore hole, if
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p_countersinkDiameter = 0.0 #Outer diameter of countersink. Should roughly match the outer diameter of the screw head
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p_countersinkAngle = 90.0 #Countersink angle (complete angle between opposite sides, not from center to one side)
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p_flipLid = True #Whether to place the lid with the top facing down or not.
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p_lipHeight = 1.0 #Height of lip on the underside of the lid. Sits inside the box body for a snug fit.
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#Outer shell
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oshell = cadquery.Workplane("XY").rect(p_outerWidth, p_outerLength).extrude(p_outerHeight + p_lipHeight)
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#Weird geometry happens if we make the fillets in the wrong order
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if p_sideRadius > p_topAndBottomRadius:
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oshell.edges("|Z").fillet(p_sideRadius)
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oshell.edges("#Z").fillet(p_topAndBottomRadius)
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else:
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oshell.edges("#Z").fillet(p_topAndBottomRadius)
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oshell.edges("|Z").fillet(p_sideRadius)
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#Inner shell
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ishell = oshell.faces("<Z").workplane(p_thickness, True)\
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.rect((p_outerWidth - 2.0 * p_thickness),(p_outerLength - 2.0 * p_thickness))\
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.extrude((p_outerHeight - 2.0 * p_thickness), False) #Set combine false to produce just the new boss
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ishell.edges("|Z").fillet(p_sideRadius - p_thickness)
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#Make the box outer box
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box = oshell.cut(ishell)
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#Make the screwposts
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POSTWIDTH = (p_outerWidth - 2.0 * p_screwpostInset)
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POSTLENGTH = (p_outerLength - 2.0 * p_screwpostInset)
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postCenters = box.faces(">Z").workplane(-p_thickness)\
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.rect(POSTWIDTH, POSTLENGTH, forConstruction=True)\
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.vertices()
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for v in postCenters.all():
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v.circle(p_screwpostOD / 2.0).circle(p_screwpostID / 2.0)\
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.extrude((-1.0) * ((p_outerHeight + p_lipHeight) - (2.0 * p_thickness)), True)
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#Split lid into top and bottom parts
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(lid, bottom) = box.faces(">Z").workplane(-p_thickness - p_lipHeight ).split(keepTop=True, keepBottom=True).all() #splits into two solids
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#Translate the lid, and subtract the bottom from it to produce the lid inset
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lowerLid = lid.translate((0,0, -p_lipHeight))
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cutlip = lowerLid.cut(bottom).translate((p_outerWidth + p_thickness , 0, p_thickness - p_outerHeight + p_lipHeight))
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#Compute centers for counterbore/countersink or counterbore
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topOfLidCenters = cutlip.faces(">Z").workplane().rect(POSTWIDTH, POSTLENGTH, forConstruction=True).vertices()
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#Add holes of the desired type
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if p_boreDiameter > 0 and p_boreDepth > 0:
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topOfLid = topOfLidCenters.cboreHole(p_screwpostID, p_boreDiameter, p_boreDepth, (2.0) * p_thickness)
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elif p_countersinkDiameter > 0 and p_countersinkAngle > 0:
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topOfLid = topOfLidCenters.cskHole(p_screwpostID, p_countersinkDiameter, p_countersinkAngle, (2.0) * p_thickness)
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else:
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topOfLid= topOfLidCenters.hole(p_screwpostID, (2.0) * p_thickness)
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#Flip lid upside down if desired
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if p_flipLid:
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topOfLid.rotateAboutCenter((1, 0, 0), 180)
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#Return the combined result
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result = topOfLid.combineSolids(bottom)
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#Get a cadquery solid object
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solid = result.val()
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#Use the wrapped property of a cadquery primitive to get a FreeCAD solid
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Part.show(solid.wrapped)
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#Would like to zoom to fit the part here, but FreeCAD doesn't seem to have that scripting functionality
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