80 lines
1.9 KiB
OpenSCAD
80 lines
1.9 KiB
OpenSCAD
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$fn=100;
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WIDTH = 76;
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DEPTH = 64;
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THICKNESS = 5;
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BASE_PLATE_CORNER_RADIUS = 10;
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VSLOT_WHEEL_HOLE_DIA_SMALL = 5;
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VSLOT_WHEEL_HOLE_DIA_BIG = 7;
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WHEEL_DIA = 24;
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WHEEL_FLANGE = 2.25;
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EXTRUSION_WIDTH = 20;
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WHEEL_FLANGE_IN_EXTRUSION_SIZE = 2; // /!\ Max = WHEEL_FLANGE
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module base_plate ()
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{
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difference()
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{
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linear_extrude(THICKNESS)
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minkowski()
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{
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offset(-BASE_PLATE_CORNER_RADIUS)
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square([WIDTH, DEPTH]);
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circle(BASE_PLATE_CORNER_RADIUS);
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}
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// Wheel holes
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cy = DEPTH / 2;
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wheel_radius = WHEEL_DIA / 2;
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translate([10, cy - EXTRUSION_WIDTH / 2 - (wheel_radius - WHEEL_FLANGE_IN_EXTRUSION_SIZE), -1])
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cylinder(h=THICKNESS + 2, r=VSLOT_WHEEL_HOLE_DIA_SMALL / 2);
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translate([WIDTH - 10, cy - EXTRUSION_WIDTH / 2 - (wheel_radius - WHEEL_FLANGE_IN_EXTRUSION_SIZE), -1])
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cylinder(h=THICKNESS + 2, r=VSLOT_WHEEL_HOLE_DIA_SMALL / 2);
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translate([10, cy + EXTRUSION_WIDTH / 2 + (wheel_radius - WHEEL_FLANGE_IN_EXTRUSION_SIZE), -1])
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cylinder(h=THICKNESS + 2, r=VSLOT_WHEEL_HOLE_DIA_BIG / 2);
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translate([WIDTH - 10, cy + EXTRUSION_WIDTH / 2 + (wheel_radius - WHEEL_FLANGE_IN_EXTRUSION_SIZE), -1])
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cylinder(h=THICKNESS + 2, r=VSLOT_WHEEL_HOLE_DIA_BIG / 2);
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}
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}
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module belt_attach()
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{
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linear_extrude(8)
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union()
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{
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translate([0, THICKNESS - 4])
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union()
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{
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hull()
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{
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translate([2, 1.5]) square([3.5, 2.5]);
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translate([2, 2]) circle(2);
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}
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translate([5.5, 1.5]) square([4.7, 2.5]);
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}
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translate([5.5 + 4.7, -1]) square([7+1, THICKNESS + 2]);
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}
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}
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difference()
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{
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base_plate();
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translate([17, DEPTH / 2 - 4, 0.01])
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rotate([90,0,180])
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belt_attach();
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translate([WIDTH - 17, DEPTH / 2 + 4, 0.01])
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rotate([90,0,0])
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belt_attach();
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}
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