From a7c184e6cb8ea4cf7b8469cb767e7f18300104cc Mon Sep 17 00:00:00 2001 From: Dejvino Date: Mon, 18 Jan 2021 21:04:14 +0100 Subject: [PATCH] Improved proportions and clearances --- strap_link.scad | 88 +++++++++++++++++++++++++++++++++---------------- 1 file changed, 60 insertions(+), 28 deletions(-) diff --git a/strap_link.scad b/strap_link.scad index c9812f0..b725117 100644 --- a/strap_link.scad +++ b/strap_link.scad @@ -1,6 +1,6 @@ links_count=6; // [1..20] include_terminal=true; // [true,false] -export=4; // [0:5] +export=5; // [0:5] MODEL_DEMO=0; MODEL_LINKS=1; @@ -138,7 +138,7 @@ module clip_ratcheting(ratchet_length=20) { pin_diam=get_link_pin_diameter(); slot_slack=get_link_socket_slack(); size=[clip_size.x+socket_size.x, clip_size.y, clip_size.z]; - slot_size=[clip_size.x+slot_slack.x, size.y+1, pin_diam+slot_slack.z]; + slot_size=[clip_size.x+slot_slack.x + 0.2, size.y+1, pin_diam+slot_slack.z]; entry_size=[slot_size.x-5, clip_size.y+1, clip_size.z]; //right(clip_size.x/2) module hook() { @@ -158,7 +158,7 @@ module clip_ratcheting(ratchet_length=20) { scale([-1, 1, 1]) hook(); } wall=2; - tooth_size=[2, 2, 3]; + tooth_size=[2, 3, 3]; module tooth() { s=[tooth_size.x, tooth_size.z, tooth_size.y]; up(tooth_size.z/2) xrot(-90) right_triangle(s); @@ -187,29 +187,35 @@ module clip_ratcheting(ratchet_length=20) { difference() { cube([ratchet_length, clip_size.y, clip_size.z], center=true); up(wall/2) cube([ratchet_length, clip_size.y-wall*2, clip_size.z], center=true); + right(ratchet_length/2+1) { + slideRailGuide(groove=true); + scale([1,-1,1]) slideRailGuide(groove=true); + } } teethFwd(); teethBack(); } } ratchet_tooth_count=3; - ratchet_wall=1; + ratchet_wall=3; + ratchet_slack=0.3; + rail_slack=0.2; module ratchetTeethFront() { module ratchetButton() { - size=[3,wall*4,2]; - up(4) fwd(wall*2 - ratchet_wall) cuboid(size, fillet=1, edges=EDGES_FRONT); - up(2) back(wall/2) cube([size.x, wall, tooth_size.z + size.z], center=true); + size=[8,wall*4,4]; + up(size.z+1) fwd(wall*2 - ratchet_wall) cuboid(size, fillet=1, edges=EDGES_FRONT); + up(2) back(ratchet_wall/2) cube([size.x, ratchet_wall, tooth_size.z + size.z], center=true); } - fwd((clip_size.y-wall*2)/2 - tooth_size.y - 0.5) + fwd((clip_size.y-wall*2)/2 - tooth_size.y - ratchet_slack) left(ratchet_length) { for (i=[0:ratchet_tooth_count-1]) { - right(i*tooth_size.x) scale([-1,-1,1]) tooth(); + right(i*tooth_size.x) scale([-1,-1,0.8]) tooth(); } ratchetButton(); } module ratchetWall() { - up(tooth_size.z/2) left(ratchet_length/2 + wall - wall/2) fwd(clip_size.y/2-wall-tooth_size.y-ratchet_wall) + up(tooth_size.z/2) left(ratchet_length/2 + wall - wall/2) fwd(clip_size.y/2-wall-tooth_size.y-ratchet_wall/2 - ratchet_slack) down(wall/2+0.5) cube([ratchet_length + wall, ratchet_wall, tooth_size.z], center=true); } ratchetWall(); @@ -218,21 +224,47 @@ module clip_ratcheting(ratchet_length=20) { scale([1,-1,1]) ratchetTeethFront(); } module ratchetRight() { - left(wall/2) cube([wall, clip_size.y, clip_size.z], center=true); + left(wall) cube([wall*2, clip_size.y + rail_slack*2, clip_size.z], center=true); ratchetTeethFront(); ratchetTeethBack(); } + module slideRailGuide(groove) { + size=[ratchet_length, wall, wall]; + fwd(clip_size.y/2 + rail_slack) + left(size.x/2) scale(groove?1.5:1) cuboid(size, fillet=0.5); + } + module slideRailLeft() { + size=[ratchet_length, clip_size.y/2 - ratchet_wall*2 - wall - ratchet_slack - tooth_size.y, clip_size.z]; + right(size.x/2) cube(size, center=true); + } + module slideRailRight() { + size=[ratchet_length + 3, wall*1.5, clip_size.z]; + module railFront() { + fwd(clip_size.y/2 + size.y/2 + rail_slack) left(size.x/2) + cuboid(size, fillet=1, edges=EDGES_FRONT); + slideRailGuide(groove=false); + } + module railBack() { + scale([1, -1, 1]) railFront(); + } + railFront(); + railBack(); + } if (is_model(MODEL_CLIP_RATCHETING_A) || is_model(MODEL_CLIP_RATCHETING)) { left(ratchet_length + wall + 1) { hookLeft(); - left(0.5) ratchetLeft(); + left(0.1) { + ratchetLeft(); + slideRailLeft(); + } } } if (is_model(MODEL_CLIP_RATCHETING_B) || is_model(MODEL_CLIP_RATCHETING)) { ratchetRight(); hookRight(); + slideRailRight(); } } @@ -249,23 +281,23 @@ if (!is_undef(validation)) { right(2*segment_size.x) link(); } } -} else if (!is_undef(xray)) { - intersection() { - cube([1000, 1000, 1000]); - for (i = [0:links_count-1]) { - right(i*segment_size.x) link(); - } - } } else { - if (is_model(MODEL_CLIP)) { - left(get_link_clip_size().x) clip(); - } - if (is_model(MODEL_CLIP_RATCHETING) || is_model(MODEL_CLIP_RATCHETING_A) || is_model(MODEL_CLIP_RATCHETING_B)) { - left(get_link_clip_size().x) clip_ratcheting(); - } - if (is_model(MODEL_LINKS)) for (i = [0:links_count-1]) { - terminal=(i==links_count-1) && include_terminal; - right(i*segment_size.x) link(terminal=terminal); + intersection () { + if (!is_undef(xray)) { + down(50) cube([100, 100, 100], center=true); + } + union() { + if (is_model(MODEL_CLIP)) { + left(get_link_clip_size().x) clip(); + } + if (is_model(MODEL_CLIP_RATCHETING) || is_model(MODEL_CLIP_RATCHETING_A) || is_model(MODEL_CLIP_RATCHETING_B)) { + left(get_link_clip_size().x) clip_ratcheting(); + } + if (is_model(MODEL_LINKS)) for (i = [0:links_count-1]) { + terminal=(i==links_count-1) && include_terminal; + right(i*segment_size.x) link(terminal=terminal); + } + } } }