From e0dd17401023474ce5cf581858c130d71df4dd78 Mon Sep 17 00:00:00 2001 From: Martin Budden Date: Tue, 25 Feb 2020 22:19:20 +0000 Subject: [PATCH] Parameterisation of extrusion brackets. --- ...n_bracket.scad => extrusion_brackets.scad} | 16 +++---- vitamins/extrusion_bracket.scad | 46 ++++++++++--------- vitamins/extrusion_brackets.scad | 29 ++++++++++++ 3 files changed, 62 insertions(+), 29 deletions(-) rename tests/{extrusion_bracket.scad => extrusion_brackets.scad} (76%) create mode 100644 vitamins/extrusion_brackets.scad diff --git a/tests/extrusion_bracket.scad b/tests/extrusion_brackets.scad similarity index 76% rename from tests/extrusion_bracket.scad rename to tests/extrusion_brackets.scad index 49ea668..3dc7eb4 100644 --- a/tests/extrusion_bracket.scad +++ b/tests/extrusion_brackets.scad @@ -18,24 +18,24 @@ // include <../core.scad> -use <../vitamins/extrusion_bracket.scad> +include <../vitamins/extrusion_brackets.scad> include <../vitamins/extrusions.scad> include <../vitamins/washers.scad> include <../vitamins/nuts.scad> -module extrusionBrackets() { - extrusion20InnerCornerBracket(); +module extrusion_brackets() { + extrusion_inner_corner_bracket(extrusion_inner_corner_bracket); translate([30, 0]) - extrusion20InnerCornerBracket(grubScrews = false); + extrusion_inner_corner_bracket(extrusion_inner_corner_bracket, grub_screws = false); translate([60, 0]) - extrusion20CornerBracket_assembly(); + extrusion_corner_bracket_assembly(extrusion_corner_bracket); eWidth = extrusion_width(E2020); translate([0, 60]) { - extrusion20InnerCornerBracket(); + extrusion_inner_corner_bracket(extrusion_inner_corner_bracket); translate([-eWidth / 2, 0, 0]) rotate([-90, 0, 0]) extrusion(E2020, 20); @@ -45,7 +45,7 @@ module extrusionBrackets() { } translate([60, 60]) { - extrusion20CornerBracket_assembly(); + extrusion_corner_bracket_assembly(extrusion_corner_bracket); translate([-eWidth / 2, 0, 0]) rotate([-90, 0, 0]) extrusion(E2020, 30); @@ -57,5 +57,5 @@ module extrusionBrackets() { if($preview) let($show_threads = true) - extrusionBrackets(); + extrusion_brackets(); diff --git a/vitamins/extrusion_bracket.scad b/vitamins/extrusion_bracket.scad index bae40b4..4cab760 100644 --- a/vitamins/extrusion_bracket.scad +++ b/vitamins/extrusion_bracket.scad @@ -2,11 +2,12 @@ include include include +function extrusion_inner_corner_racket_size(type) = type[1]; //! Size of bracket -module extrusion20InnerCornerBracket(grubScrews = true) { //! Inner corner bracket for 20mm extrusion - vitamin(str("extrusion20InnerCornerBracket(): Extrusion20 inner corner bracket")); +module extrusion_inner_corner_bracket(type, grub_screws = true) { //! Inner corner bracket for extrusion + vitamin(str("extrusion_inner_corner_bracket(", type[0], ", ", grub_screws, "): Extrusion inner corner bracket ", type[1].z)); - size = [25, 25, 4.5]; + size = extrusion_inner_corner_racket_size(type); armLength = size.x; bottomTabOffset = 4; topTabOffset = 10; @@ -31,7 +32,7 @@ module extrusion20InnerCornerBracket(grubScrews = true) { //! Inner corner brack cube([size.z, size.z, topTabOffset]); } } - if(grubScrews) + if(grub_screws) not_on_bom() no_explode() { grubScrewLength = 6; for(angle = [[0, 0, 0], [0, -90, 180]]) @@ -42,15 +43,18 @@ module extrusion20InnerCornerBracket(grubScrews = true) { //! Inner corner brack } } -function extrusion20CornerBracket_base_thickness() = 2; //! Thickness of base of bracket -function extrusion20CornerBracket_hole_offset() = 19.5; //! Hole offset from corner +function extrusion_corner_bracket_size(type) = type[1]; //! Size of bracket +function extrusion_corner_bracket_base_thickness(type) = type[2]; //! Thickness of base of bracket +function extrusion_corner_bracket_side_thickness(type) = type[3]; //! Thickness of side of bracket +function extrusion_corner_bracket_hole_offset(type) = type[4]; //! Hole offset from corner -module extrusion20CornerBracket() { //! Corner bracket for 20mm extrusion - vitamin(str("extrusion20CornerBracket(): Extrusion20 corner bracket")); +module extrusion_corner_bracket(type) { //! Corner bracket for extrusion +echo(type=type); + vitamin(str("extrusion_corner_bracket(", type[0], "): Extrusion corner bracket ", type[1].z)); - eSize = 20; - cbSize = 28; - baseThickness = extrusion20CornerBracket_base_thickness(); + eSize = extrusion_corner_bracket_size(type).z; + cbSize = extrusion_corner_bracket_size(type).x; + baseThickness = extrusion_corner_bracket_base_thickness(type); module base() { linear_extrude(baseThickness) @@ -58,9 +62,9 @@ module extrusion20CornerBracket() { //! Corner bracket for 20mm extrusion translate([0, -eSize / 2, 0]) square([cbSize, eSize]); hull() { - translate([extrusion20CornerBracket_hole_offset() + 1.5, 0, 0]) + translate([extrusion_corner_bracket_hole_offset(type) + 1.5, 0, 0]) circle(r = M5_clearance_radius); - translate([extrusion20CornerBracket_hole_offset() - 1.5, 0, 0]) + translate([extrusion_corner_bracket_hole_offset(type) - 1.5, 0, 0]) circle(r = M5_clearance_radius); } } @@ -72,7 +76,7 @@ module extrusion20CornerBracket() { //! Corner bracket for 20mm extrusion translate([0, baseThickness, 0]) rotate([90, 0, 0]) base(); - sideThickness = 3; + sideThickness = extrusion_corner_bracket_side_thickness(type); for(z = [-eSize / 2, eSize / 2 - sideThickness]) { translate_z(z) { right_triangle(cbSize, cbSize, sideThickness, center = false); @@ -83,25 +87,25 @@ module extrusion20CornerBracket() { //! Corner bracket for 20mm extrusion } } -module extrusion20CornerBracket_hole_positions() { //! Place children at hole positions +module extrusion_corner_bracket_hole_positions(type) { //! Place children at hole positions for(angle = [ [0, 90, 0], [-90, -90, 0] ]) rotate(angle) - translate([0, extrusion20CornerBracket_hole_offset(), extrusion20CornerBracket_base_thickness()]) + translate([0, extrusion_corner_bracket_hole_offset(type), extrusion_corner_bracket_base_thickness(type)]) children(); } -module extrusion20CornerBracket_assembly(part_thickness = 2, screw_type = M4_cap_screw, nut_type = M4_sliding_t_nut, max_screw_depth = 6) { //! Assembly with fasteners in place - extrusion20CornerBracket(); +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 + extrusion_corner_bracket(type); screw_washer_thickness = washer_thickness(screw_washer(screw_type)); nut_washer_type = nut_washer(nut_type); nut_washer_thickness = nut_washer_type ? washer_thickness(nut_washer_type) : 0; - nut_offset = extrusion20CornerBracket_base_thickness() + part_thickness; - screw_length = max_screw_depth ? screw_shorter_than(extrusion20CornerBracket_base_thickness() + screw_washer_thickness + max_screw_depth) + nut_offset = extrusion_corner_bracket_base_thickness(type) + part_thickness; + screw_length = max_screw_depth ? screw_shorter_than(extrusion_corner_bracket_base_thickness(type) + screw_washer_thickness + max_screw_depth) : screw_longer_than(nut_offset + screw_washer_thickness + nut_washer_thickness + nut_thickness(nut_type)); - extrusion20CornerBracket_hole_positions() { + extrusion_corner_bracket_hole_positions(type) { screw_and_washer(screw_type, screw_length); translate_z(-nut_offset) vflip() diff --git a/vitamins/extrusion_brackets.scad b/vitamins/extrusion_brackets.scad new file mode 100644 index 0000000..612be37 --- /dev/null +++ b/vitamins/extrusion_brackets.scad @@ -0,0 +1,29 @@ +// +// NopSCADlib Copyright Chris Palmer 2020 +// nop.head@gmail.com +// hydraraptor.blogspot.com +// +// This file is part of NopSCADlib. +// +// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the +// GNU General Public License as published by the Free Software Foundation, either version 3 of +// the License, or (at your option) any later version. +// +// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; +// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +// See the GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License along with NopSCADlib. +// If not, see . +// +// +// Extrusion brackets +// + +extrusion_inner_corner_bracket = [ "E20_inner_corner_bracket", [25, 25, 4.5] ]; + +extrusion_corner_bracket = [ "E20_corner_bracket", [28, 28, 20], 2, 3, 19.5]; + + +use +