115 lines
2.9 KiB
Python
115 lines
2.9 KiB
Python
import cadquery2 as cq
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from cadquery2 import exporters
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# Shell thickness
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shell_t = 2
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# width, length VISIBLE WITHIN THE BEZEL
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screen_w = 223
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screen_l = 57
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# Distance from the left of the case to screen cutout
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screen_left_margin = 7 + shell_t # (7 is bezel width on that side)
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# width, length, height INCLUDING_BEZEL
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display_w = 233
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display_l = 65
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display_h = 5
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width = 250
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height = display_h + 2 * shell_t + 1
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length = display_l + 2 * shell_t + 1
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fillet_s = 2
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# Distance from the left of the case to display end
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display_left_margin = screen_left_margin - 7
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# Distance from the right of the case to display end
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display_right_margin = width - display_left_margin - display_w
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# Distance from the top of the case to display top
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display_top_margin = (length - display_l) / 2
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display_bottom_margin = display_top_margin # Symmetrical
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# Threaded insert hole dimensions
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ti_radius = 2.25
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ti_depth = 7.5
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screen_cutout = (
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cq.Sketch().trapezoid(screen_w, screen_l, 90, mode="a").reset().vertices().fillet(1)
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)
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board_cutout = (
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cq.Sketch().trapezoid(55, 50, 90, mode="a").reset().vertices("<X").fillet(5)
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)
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segment_breaks_top = (
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cq.Sketch()
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.rarray(1, length, 1, 1)
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.trapezoid(width / 3, 35, 110, mode="a")
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.reset()
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.vertices()
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.fillet(5)
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)
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segment_breaks_bottom = (
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cq.Sketch()
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.rarray(1, length, 1, 1)
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.trapezoid(width / 3, 35, 70, mode="a")
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.reset()
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.vertices()
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.fillet(5)
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)
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back_reinforcement = (
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cq.Sketch().trapezoid(width / 2, 15, 90, mode="a").reset().vertices().fillet(2)
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)
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threaded_inserts = cq.Sketch().rarray(width / 8, 0, 4, 1).circle(ti_radius, mode="a")
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# Holder for the screen (other half of the case)
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screen_base = (
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# Basic filleted box shape
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cq.Workplane("bottom")
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.lineTo(-width, 0)
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.lineTo(-width, height)
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.lineTo(0, height)
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.close()
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.extrude(length)
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.faces(">X")
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.shell(-shell_t)
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.edges("|X")
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.fillet(fillet_s)
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# Cutout visible screen area from top face
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.faces(">Z")
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.workplane(centerOption="CenterOfBoundBox")
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.center((width - screen_w) / 2 - screen_left_margin, 0)
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.placeSketch(screen_cutout)
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.cutBlind(-shell_t)
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# Cutout for segment breaks
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.faces(">Z")
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.workplane(centerOption="CenterOfBoundBox")
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.center(0, length / 2)
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.placeSketch(segment_breaks_top)
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.cutBlind(-1000)
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.center(0, -length)
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.placeSketch(segment_breaks_bottom)
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.cutBlind(-1000)
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# Cutout for the circuit board
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.faces("<Z")
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.workplane(centerOption="CenterOfBoundBox")
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.center(width / 2 - 27.5, 0)
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.placeSketch(board_cutout)
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.cutBlind(-shell_t)
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# Back reinforcement with holes for threaded inserts
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.faces("<Z")
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.workplane(centerOption="CenterOfBoundBox")
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.placeSketch(back_reinforcement)
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.extrude(1 + ti_depth - shell_t)
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.faces("<Z")
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.workplane(centerOption="CenterOfBoundBox")
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.placeSketch(threaded_inserts)
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.cutBlind(-ti_depth)
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)
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exporters.export(screen_base, "screen_base.stl")
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