mirror of
https://github.com/nophead/Mendel90.git
synced 2025-01-17 04:48:15 +01:00
9345a5b85a
Filled some gaps in the X ends to make them faster to print. D motor bracket lid now one piece again, as PCB now clears it. Calibration object now includes horizontal nut traps. Add c14n_stl.py to canonicalise the STL files. Corrected PLA sample diameter. Removed feed tube connector, works fine without it. Removed tube jig as not required in the kit. Manual updated with new part renders.
139 lines
4.2 KiB
OpenSCAD
139 lines
4.2 KiB
OpenSCAD
//
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// Mendel90
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//
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// GNU GPL v2
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// nop.head@gmail.com
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// hydraraptor.blogspot.com
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//
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// End caps for the aluminium box tubes used on the dibond version
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//
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include <conf/config.scad>
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include <positions.scad>
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wall = 3;
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clearance = 0.25;
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boss = washer_diameter(M3_washer) + 1;
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punch = 3;
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base_screw_offset = fixing_block_width() / 2 + base_clearance - AL_tube_inset;
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length = wall + base_screw_offset + 10;
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width = tube_width(AL_square_tube) + 2 * wall + clearance;
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function tube_cap_base_thickness() = 3 * layer_height;
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function tube_jig_base_thickness() = wall;
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module tube_jig(open) {
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stl("tube_jig");
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h = tube_height(AL_square_tube);
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w = tube_width(AL_square_tube);
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translate([-wall, - width / 2, 0])
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difference() {
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union() {
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cube([length, width, h + tube_jig_base_thickness()]);
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hull()
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for(side = [-1, 1])
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translate([length / 2, side * (width + boss) / 2 + width / 2, 0])
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cylinder(r = boss / 2, h = wall);
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}
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translate([open ? -eta : wall, wall + clearance / 2, tube_jig_base_thickness()])
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cube([length + 1, w + clearance, h + tube_jig_base_thickness()]);
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translate([wall + base_screw_offset, width / 2, -1])
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poly_cylinder(r = punch / 2, h = h);
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for(side = [-1, 1])
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translate([length / 2, side * (width + boss) / 2 + width / 2, 0])
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poly_cylinder(r = M3_clearance_radius, h = 100, center = true);
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}
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}
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module base_tube() {
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difference() {
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translate([0, 0, -tube_height(AL_square_tube) / 2])
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rotate([90, 0, 0])
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square_tube(AL_square_tube, base_depth - 2 * AL_tube_inset);
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for(end = [-1,1])
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translate([0, end * (base_depth / 2 - fixing_block_width() / 2 - base_clearance), -tube_height(AL_square_tube)]) {
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base_screw_hole();
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cylinder(r = screw_head_radius(base_screw) + 0.5, h = tube_thickness(AL_square_tube) * 2 + 1, center = true);
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}
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}
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}
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module tube_cap_stl() {
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stl("tube_cap");
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w = tube_height(AL_square_tube);
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h = tube_width(AL_square_tube);
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t = tube_thickness(AL_square_tube);
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clearance = 0.3;
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base_thickness = tube_cap_base_thickness();
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w_outer = w - 1;
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h_outer = h - 1;
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w_inner_base = w - 2 * t;
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w_inner_top = w_inner_base - clearance;
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h_inner_base = h - 2 * t;
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h_inner_top = h_inner_base - clearance;
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union() {
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translate([-w_outer / 2, - h_outer / 2, 0])
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cube([w_outer, h_outer, base_thickness]);
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hull() {
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translate([-w_inner_top / 2, - h_inner_top / 2, 0])
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cube([w_inner_top, h_inner_top, 5]);
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translate([-w_inner_base / 2, - h_inner_base / 2, 0])
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cube([w_inner_base, h_inner_base, base_thickness + 1]);
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}
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}
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}
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module tube_jig_base() {
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w = tube_width(AL_square_tube) + 2 * wall + clearance + 2 * boss + 2;
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difference() {
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sheet(DiBond, base_depth, w, [5,5,5,5]);
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for(end = [-1,1]) {
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translate([end * (base_depth / 2 - fixing_block_width() / 2 - base_clearance), 0, 0])
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cylinder(r = punch / 2, h = 100, center = true);
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for(side = [-1, 1])
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translate([end * (base_depth / 2 - AL_tube_inset - length / 2 + wall), side * (width / 2 + boss / 2), 0])
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cylinder(r = M3_clearance_radius, h = 100, center = true);
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}
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}
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}
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module tube_jig_dxf() projection(cut = true) tube_jig_base();
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module tube_jig_assembly() {
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translate([0, 0, -tube_height(AL_square_tube) - wall - sheet_thickness(DiBond) / 2])
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rotate([0, 0, 90])
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tube_jig_base();
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base_tube();
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for(end = [-1, 1])
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translate([0, end * (base_depth / 2 - AL_tube_inset), -tube_height(AL_square_tube) - tube_jig_base_thickness() - eta])
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rotate([0, 0, -90 * end])
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color("lime") render()
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tube_jig(end == -1);
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}
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module tube_jigs_stl() {
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tube_jig(true);
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translate([25, 0, 0])
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tube_jig(false);
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}
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if(0)
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tube_jig_dxf();
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else
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if(1)
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tube_jig_assembly();
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else
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tube_jigs_stl();
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