mirror of
https://github.com/nophead/NopSCADlib.git
synced 2025-09-02 11:52:42 +02:00
E40_corner_bracket, E40_corner_bracket and M8_sliding_ball_t_nut added.
Inner corner brackets now show the long arm with chamfered ridges rather than a normal T-nut and the grub screws are inserted to meet the extrusion.
This commit is contained in:
Chris Palmer
@@ -20,44 +20,65 @@
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//! Brackets for joining extrusions at a corner.
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include <../core.scad>
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use <extrusion.scad>
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function extrusion_inner_corner_bracket_size(type) = type[1]; //! Size of inner bracket
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function extrusion_inner_corner_bracket_size(type) = type[1]; //! Size of inner bracket
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function extrusion_inner_corner_bracket_tnut(type) = type[2]; //! The sliding t-nut it is based on
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function extrusion_inner_corner_bracket_extrusion(type) = type[3]; //! Default extrusion this bracket is for
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function extrusion_inner_corner_bracket_screw_offsets(type) = type[4]; //! Screw offsets from the ends
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module extrusion_inner_corner_bracket(type, grub_screws = true) { //! Inner corner bracket for extrusion
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vitamin(str("extrusion_inner_corner_bracket(", type[0], ", ", grub_screws, "): Extrusion inner corner bracket ", type[1].z));
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module extrusion_inner_corner_bracket(type, grub_screws = true, backwards = false) { //! Inner corner bracket for extrusion
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extrusion = extrusion_inner_corner_bracket_extrusion(type);
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vitamin(str("extrusion_inner_corner_bracket(", type[0], "): Extrusion inner corner bracket for ", extrusion[0]));
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size = extrusion_inner_corner_bracket_size(type);
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armLength = size.x;
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tnut = extrusion_inner_corner_bracket_tnut(type);
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screw_offsets = extrusion_inner_corner_bracket_screw_offsets(type);
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bottomTabOffset = 4;
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topTabOffset = 10;
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sizeBottom = [armLength - bottomTabOffset, 6, size.z];
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sizeTop = [armLength - topTabOffset, 6, size.z];
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tabSizeY1 = 10;
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tabSizeY2 = 6;
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tabSizeZ = 3.25;
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holeRadius = M4_tap_radius;
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sizeBottom = [size.y - bottomTabOffset, nut_square_width(tnut), size.z];
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sizeTop = [size.x - topTabOffset, nut_square_width(tnut), size.z];
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tab = t_nut_tab(tnut);
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tabSizeZ = nut_thickness(tnut);
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screw = find_screw(hs_grub, nut_size(tnut));
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holeRadius = screw_pilot_hole(screw);
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depth = (extrusion_width(extrusion) - extrusion_center_square(extrusion)) / 2;
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translate([-size.z - 0.75, -size.z - 0.75, 0])
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offset = extrusion_tab_thickness(extrusion) + tabSizeZ;
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offset2 = extrusion_tab_thickness(extrusion) - nut_thickness(tnut, true) + nut_thickness(tnut);
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translate([backwards ? offset2 : -offset, -offset])
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rotate([-90, 0, 0]) {
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color("silver") {
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translate([(armLength + bottomTabOffset) / 2, 0, tabSizeZ])
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translate([(size.y + bottomTabOffset) / 2, 0, tabSizeZ])
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rotate([0, 180, 0])
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extrusionSlidingNut(sizeBottom, tabSizeY1, tabSizeY2, tabSizeZ, holeRadius, (bottomTabOffset - armLength) / 2 + 5);
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translate([tabSizeZ, 0, (armLength + topTabOffset) / 2])
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extrusionSlidingNut(sizeBottom, tab[0], tab[1], tabSizeZ, holeRadius, (bottomTabOffset - size.y) / 2 + screw_offsets.y);
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translate([tabSizeZ, 0, (size.x + topTabOffset) / 2])
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rotate([0, -90, 0])
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extrusionSlidingNut(sizeTop, tabSizeY1, tabSizeY2, tabSizeZ, holeRadius,-(topTabOffset - armLength) / 2 - 5);
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translate([0, -size.z / 2, 0]) {
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cube([bottomTabOffset, size.z, size.z]);
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cube([size.z, size.z, topTabOffset]);
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extrusionSlidingNut(sizeTop, tab[0], tab[0], tabSizeZ, holeRadius, -(topTabOffset - size.x) / 2 - screw_offsets.x);
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translate([0, -tab[1] / 2]) {
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cube([bottomTabOffset, tab[1], size.z]);
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cube([size.z, tab[1], topTabOffset]);
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}
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}
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if(grub_screws)
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not_on_bom() no_explode() {
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grubScrewLength = 6;
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for(angle = [[0, 0, 0], [0, -90, 180]])
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rotate(angle)
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translate([armLength - 5, 0, size.z])
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screw(M3_grub_screw, grubScrewLength);
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screw_len = screw_shorter_than(depth);
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gap = depth - screw_len;
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screw_z = offset - gap;
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rotate([0, -90, 180])
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if(backwards)
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translate([size.x - screw_offsets.x, 0, -offset2 + gap])
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vflip()
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screw(screw, screw_len);
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else
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translate([size.x - screw_offsets.x, 0, screw_z])
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screw(screw, screw_len);
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translate([size.y - screw_offsets.y, 0, screw_z])
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screw(screw, screw_len);
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}
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}
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}
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@@ -66,24 +87,29 @@ function extrusion_corner_bracket_size(type) = type[1]; //! Size of
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function extrusion_corner_bracket_base_thickness(type) = type[2]; //! Thickness of base of bracket
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function extrusion_corner_bracket_side_thickness(type) = type[3]; //! Thickness of side of bracket
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function extrusion_corner_bracket_hole_offset(type) = type[4]; //! Hole offset from corner
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function extrusion_corner_bracket_tnut(type) = type[5]; //! The sliding t-nut to use in the assembly
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function extrusion_corner_bracket_extrusion(type) = type[6]; //! Default extrusion this bracket is for
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module extrusion_corner_bracket(type) { //! Corner bracket for extrusion
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vitamin(str("extrusion_corner_bracket(", type[0], "): Extrusion corner bracket ", type[1].z));
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vitamin(str("extrusion_corner_bracket(", type[0], "): Extrusion corner bracket ", type[1].z, "mm for ", extrusion_corner_bracket_extrusion(type)[0]));
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eSize = extrusion_corner_bracket_size(type).z;
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cbSize = extrusion_corner_bracket_size(type).x;
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baseThickness = extrusion_corner_bracket_base_thickness(type);
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hole_r = screw_clearance_radius(find_screw(hs_cap, nut_size(extrusion_corner_bracket_tnut(type))));
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module base() {
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linear_extrude(baseThickness)
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difference() {
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translate([0, -eSize / 2, 0])
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translate([0, -eSize / 2])
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square([cbSize, eSize]);
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hull() {
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translate([extrusion_corner_bracket_hole_offset(type) + 1.5, 0, 0])
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circle(r = M5_clearance_radius);
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translate([extrusion_corner_bracket_hole_offset(type) - 1.5, 0, 0])
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circle(r = M5_clearance_radius);
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translate([extrusion_corner_bracket_hole_offset(type) + 1.5, 0])
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circle(hole_r);
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translate([extrusion_corner_bracket_hole_offset(type) - 1.5, 0])
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circle(hole_r);
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}
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}
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}
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@@ -91,9 +117,11 @@ module extrusion_corner_bracket(type) { //! Corner bracket for extrusion
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color("silver") {
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rotate([90, 0, 90])
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base();
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translate([0, baseThickness, 0])
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translate([0, baseThickness])
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rotate([90, 0, 0])
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base();
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sideThickness = extrusion_corner_bracket_side_thickness(type);
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for(z = [-eSize / 2, eSize / 2 - sideThickness]) {
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translate_z(z) {
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@@ -112,25 +140,31 @@ module extrusion_corner_bracket_hole_positions(type) { //! Place children at hol
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children();
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}
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module extrusion_corner_bracket_assembly(type, part_thickness = 2, screw_type = M4_cap_screw, nut_type = M4_sliding_t_nut, max_screw_depth = 6) { //! Assembly with fasteners in place
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module extrusion_corner_bracket_assembly(type, part_thickness = undef, screw_type = undef, nut_type = undef, max_screw_depth = undef) { //! Assembly with fasteners in place
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extrusion_corner_bracket(type);
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extrusion = extrusion_corner_bracket_extrusion(type);
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screw_washer_thickness = washer_thickness(screw_washer(screw_type));
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nut_washer_type = nut_washer(nut_type);
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nut = is_undef(nut_type) ? extrusion_corner_bracket_tnut(type) : nut_type;
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screw = is_undef(screw_type) ? find_screw(hs_cap, nut_size(nut)) : screw_type;
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thickness = is_undef(part_thickness) ? extrusion_tab_thickness(extrusion) : part_thickness;
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depth = is_undef(max_screw_depth) ? (extrusion_width(extrusion) - extrusion_center_square(extrusion)) / 2 - eps : max_screw_depth;
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screw_washer_thickness = washer_thickness(screw_washer(screw));
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nut_washer_type = nut_washer(nut);
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nut_washer_thickness = nut_washer_type ? washer_thickness(nut_washer_type) : 0;
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nut_offset = extrusion_corner_bracket_base_thickness(type) + part_thickness;
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screw_length = max_screw_depth ? screw_shorter_than(extrusion_corner_bracket_base_thickness(type) + screw_washer_thickness + max_screw_depth)
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: screw_longer_than(nut_offset + screw_washer_thickness + nut_washer_thickness + nut_thickness(nut_type));
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nut_offset = extrusion_corner_bracket_base_thickness(type) + thickness;
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screw_length = depth ? screw_shorter_than(extrusion_corner_bracket_base_thickness(type) + screw_washer_thickness + depth)
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: screw_longer_than(nut_offset + screw_washer_thickness + nut_washer_thickness + nut_thickness(nut));
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extrusion_corner_bracket_hole_positions(type) {
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screw_and_washer(screw_type, screw_length);
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screw_and_washer(screw, screw_length);
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translate_z(-nut_offset)
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vflip()
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if(nut_washer_type)
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nut_and_washer(nut_type);
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nut_and_washer(nut);
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else
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rotate(90)
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sliding_t_nut(nut_type);
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sliding_t_nut(nut);
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}
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}
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