From: Jan "Yenya" Kasprzak Date: Mon, 11 Mar 2019 18:06:11 +0000 (+0100) Subject: wing-tube-support: smaller simpler asymmetric version X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=dfc738c84d3e874fec9941e529fb3faf1cec1711;p=things.git wing-tube-support: smaller simpler asymmetric version --- diff --git a/wing-tube-support.scad b/wing-tube-support.scad index b43ffaa..908a7b2 100644 --- a/wing-tube-support.scad +++ b/wing-tube-support.scad @@ -1,92 +1,67 @@ eps = 0.01; -infty = 200; +infty = 100; wall = 1.5; thin_wall = 0.6; -tube_d = 10; -tube_zoff = thin_wall + 3; +tube_d = 6; +tube_zoff = 3; -base_w = 60; -base_l = 45; +base_front = 15; +base_rear = 25; +base_w = base_front + base_rear; +base_l = 15; -/* -module body() { - hull() { -// translate([-fuse_tube_d/2-wall, -fuse_tube_l/2, 0]) -// cube([fuse_tube_d + 2*wall, fuse_tube_l, fuse_tube_d + 2*wall]); - translate([0, fuse_tube_l/2, fuse_tube_d/2+wall]) - rotate([90, 0, 0]) - cylinder(r = fuse_tube_d/2+wall, h = fuse_tube_l); - translate([-fuse_tube_d/2-wall, -base_l/2+wall/2, 0]) - cube([fuse_tube_d + 2*wall, base_l-wall, thin_wall]); - } -} - -module holder() { - difference() { - body(); - translate([0, infty/2, fuse_tube_d/2+wall]) - rotate([90, 0, 0]) - cylinder(r = fuse_tube_d/2, h = infty + 2*eps); - translate([-slot_w/2, -infty/2, fuse_tube_d/2+wall]) - cube([slot_w, infty, fuse_tube_d/2+wall+eps]); - } -} -*/ +tube_l = base_l/2; +base_overhang = 0.9; // factor of base_front, base_r, base_l module body() { // base // scale([1, base_l/base_w, 1]) // cylinder(r = base_w/2, h = thin_wall); - translate([-base_w/2, -base_l/2, 0]) cube([base_w, base_l, thin_wall]); + translate([-base_rear, -base_l/2, 0]) cube([base_w, base_l, thin_wall]); - // side supports + // front diagonal supports for (y = [-1,1]) - for (x = [-1,1]) - scale([x, y, 1]) hull() { - translate([base_w/2-thin_wall, -base_l/2, 0]) - cube([thin_wall, thin_wall, thin_wall]); - translate([-thin_wall/2, -base_l/2, 0]) - cube([thin_wall, thin_wall, tube_zoff + tube_d-thin_wall]); + scale([1, y, 1]) hull() { + translate([base_overhang*base_front-thin_wall/2, base_overhang*base_l/2-thin_wall/2, 0]) + cylinder(r = thin_wall/2, h = thin_wall, $fn = 16); + translate([0, tube_l/3-thin_wall/2, 0]) + cylinder(r = thin_wall/2, h = tube_zoff + tube_d, $fn = 16); } - // diagonal supports + // rear diagonal supports for (y = [-1,1]) - for (x = [-1,1]) - scale([x, y, 1]) hull() { - translate([base_w/2-thin_wall/2, base_l/3, 0]) + scale([1, y, 1]) hull() { + translate([-base_overhang*base_rear+thin_wall/2, base_overhang*base_l/2-thin_wall/2, 0]) cylinder(r = thin_wall/2, h = thin_wall, $fn = 16); - translate([0, -base_l/2+thin_wall/2, 0]) - cylinder(r = thin_wall/2, h = tube_zoff + tube_d - thin_wall, $fn = 16); + translate([0, tube_l/3-thin_wall/2, 0]) + cylinder(r = thin_wall/2, h = tube_zoff + tube_d, $fn = 16); } // under the tube supports for (y = [-1,1]) scale([1, y, 1]) hull() { - translate([thin_wall/2, -base_l/4, 0]) - cube([thin_wall, thin_wall, thin_wall]); - translate([-thin_wall/2, -base_l/2, 0]) - cube([thin_wall, thin_wall, tube_zoff + 2*tube_d/3]); + translate([0, base_overhang*base_l/2, 0]) + cylinder(r = thin_wall/2, h = thin_wall, $fn = 16); + translate([-thin_wall/2, 0, 0]) + cube([thin_wall, tube_l/2, tube_zoff]); } // side bottom tube supports - for (y = [-1,1]) for (x = [-1,1]) - scale([x, y, 1]) hull() { - translate([tube_d/2, base_l/3, 0]) - cube([thin_wall, base_l/6, tube_zoff + tube_d/2]); + scale([x, 1, 1]) { + translate([tube_d/2, -tube_l/2, 0]) + cube([thin_wall, tube_l, tube_zoff + tube_d/2]); } // upper cylinder clip - for (y = [-1,1]) - scale([1, y, 1]) - translate([0, base_l/3, tube_d/2 + tube_zoff]) + translate([0, -tube_l/2, tube_d/2 + tube_zoff]) intersection() { rotate([-90, 0, 0]) - cylinder(r = tube_d/2 + thin_wall, h = base_l/6); + cylinder(r = tube_d/2 + thin_wall, h = tube_l); translate([-tube_d/2-thin_wall, 0, 0]) - cube([tube_d + 2*thin_wall, base_l/6, tube_d/3]); + cube([tube_d + 2*thin_wall, tube_l, tube_d]); } } @@ -96,13 +71,16 @@ difference() { translate([0, -base_l/2-eps, tube_d/2+tube_zoff]) rotate([-90, 0, 0]) cylinder(r = tube_d/2, h = base_l + 2*eps); - // central hole in the base plate - translate([0, 0, -eps]) scale ([1, base_l/base_w, 1]) - cylinder(r = base_w/6, h = thin_wall+2*eps); - // side holes in the base plate - for (y = [-1, 1]) - for (x = [-1, 1]) - scale([x, y, 1]) - translate([0.3*base_w, 0.3*base_l, -eps]) - cylinder(r = base_w/10, h = thin_wall+2*eps); + // upper clip + translate([-infty/2, -infty/2, tube_zoff + 5*tube_d/6]) + cube(infty); + + // front-side hole + translate([0.6*base_front, 0, -eps]) + scale([1, base_l/base_front, 1]) + cylinder(r = base_front/4, h = thin_wall + 2*eps); + // rear-side hole + translate([-0.6*base_rear, 0, -eps]) + scale([1, base_l/base_rear, 1]) + cylinder(r = base_rear/4, h = thin_wall + 2*eps); }