X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=knifeblock.scad;h=7ea6079d580a4221ad95a69e589f6909b885a4ac;hp=8f125e3b96830cf695a0009dc7a5652f7e26ed44;hb=216f40cedb6ce16f24f1bcad55a8ecf1f2093f02;hpb=4e17e78ca0600fa676799adaa52fbf2ff7b47815 diff --git a/knifeblock.scad b/knifeblock.scad index 8f125e3..7ea6079 100644 --- a/knifeblock.scad +++ b/knifeblock.scad @@ -5,7 +5,7 @@ nknives = 3; widths = [15.5, 15.8, 19.0]; handlelenbase = 75; handlelendelta = [-15, 0, 10]; -locations = [-35, 0, 40]; +locations = [-35, 0, 37]; bladew = 5; // 2.5 maxhandledepth = 45; @@ -23,6 +23,8 @@ minsideout = 4; frontbackslop = 0.25; +knifewidthslop = 2.0; + screwbackdepth = 6.0 - 1.0; screwdia = 4.0 + 0.5; screwcsinkdia = 9.8 + 1.0; @@ -36,6 +38,13 @@ covertopwing = 15; covertopwingbase = 20; coveredge = 3; +holesize = 12.5; +holestrut = 7; +holeedge = 4; + +holeoffx = 0.33; +holeoffy = 0.23; + pegstem = 3.5; peghead = 10; pegstemheight = 2; @@ -43,24 +52,29 @@ pegheight = 9; peglen = 12; recessblockwidth = peghead + pegstem*3; -recessblockheight = peglen + pegstem*1.5; +recessblockheight = peglen/2 + pegstem*1.5; pegsloph = 0.5; pegslopv = 0.5; pegslopl = 0.5; -pegdepthproportion = 0.67; +pegdepthproportion = 0.80; // computed + +function width(k) = widths[k] + knifewidthslop; + side = minsidein + screwcsinkdia + minsideout; totaldepth = front + maxhandledepth + back; -minkx = locations[0] - widths[0] /2; -maxkx = locations[nknives-1] + widths[nknives-1]/2; +minkx = locations[0] - width(0) /2; +maxkx = locations[nknives-1] + width(nknives-1)/2; minx = minkx - side; maxx = maxkx + side; +holepitch = holesize+holestrut; + pegrecess = pegdepthproportion*totaldepth - 0.5*peglen; module ImportTemplate(w,k,t) { @@ -74,9 +88,9 @@ module ImportTemplate(w,k,t) { module Knife(k){ ImportTemplate(bladew, k,"bl"); hull(){ - ImportTemplate(widths[k], k,"hl"); + ImportTemplate(width(k), k,"hl"); translate([-100,0,0]) - ImportTemplate(widths[k], k,"hl"); + ImportTemplate(width(k), k,"hl"); } } @@ -102,16 +116,37 @@ module ScrewHole(){ cylinder(r=screwcsinkdia/2 / (sqrt(3)/2), h=100, $fn=6); } +module PegTemplate(apex){ + for (mx=[0,1]) for (my=[0,1]) { + mirror([mx,0,0]) mirror([0,my,0]) + polygon([[-0.1, -0.1], + [pegstem/2, -0.1], + [pegstem/2, pegstemheight/2], + [peghead/2, pegheight /2], + [-0.1, pegheight /2 + apex]]); + } +} + +module AtSides(){ + translate([minx,0,0]) child(0); + translate([maxx,0,0]) mirror([1,0,0]) child(1); +} + +module BlockPegSlot(){ + translate([recessblockwidth/2, pegrecess - 0.5*peglen, -height]){ + rotate([-90,0,0]) linear_extrude(height=totaldepth){ + PegTemplate(peghead/2 * 1.2); + } + } +} + module Block(){ sidemidx = minsideout + screwcsinkdia/2; difference(){ - hull() mirror([0,0,1]) { - translate([minx, 0, 0]) - cube([maxx-minx, totaldepth-front, height]); - for (x=[minx + front/2, maxx - front/2]) - translate([x, -front/2, 0]) - cylinder(r=front/2, h=height, $fn=30); + mirror([0,0,1]) { + translate([minx, -front, 0]) + cube([maxx-minx, totaldepth, height]); } for (x=[minx + sidemidx, maxx - sidemidx]) { translate([x, 0, -screwabove]) @@ -120,6 +155,7 @@ module Block(){ for (yshift=[-1,1]) translate([0, yshift * frontbackslop, 0]) DoKnives(); + AtSides() { BlockPegSlot(); BlockPegSlot(); } } } @@ -153,17 +189,6 @@ module CoverSide(len){ } } -module PegTemplate(){ - for (mx=[0,1]) for (my=[0,1]) { - mirror([mx,0,0]) mirror([0,my,0]) - polygon([[-0.1, -0.1], - [pegstem/2, -0.1], - [pegstem/2, pegstemheight/2], - [peghead/2, pegheight /2], - [-0.1, pegheight /2]]); - } -} - module Peg(){ echo("peg angle slope (must be <1)", (peghead-pegstem)/(pegheight-pegstemheight)); @@ -172,23 +197,74 @@ module Peg(){ rotate([90,0,0]) { linear_extrude(height=peglen-pegslopl) { intersection(){ - translate([-dx,-dy,0]) PegTemplate(); - translate([-dx,+dy,0]) PegTemplate(); - translate([+dx,+dy,0]) PegTemplate(); - translate([+dx,-dy,0]) PegTemplate(); + translate([-dx,-dy,0]) PegTemplate(0); + translate([-dx,+dy,0]) PegTemplate(0); + translate([+dx,+dy,0]) PegTemplate(0); + translate([+dx,-dy,0]) PegTemplate(0); } } } } -module AtSides(){ - translate([minx,0,0]) child(0); - translate([maxx,0,0]) mirror([1,0,0]) child(1); +module CoverPegSlot(coverlen){ + translate([recessblockwidth/2, 0, -1]){ + linear_extrude(height= 1 + pegrecess + 0.5*peglen){ + PegTemplate(0); + } + } +} + +module HoleRow(){ + imax = ceil(coverlonglen / holepitch); + echo("Holes Y count ", imax); + for (i=[0:imax]) { + translate([0, (i+0.5)*holepitch, -20]) + cylinder(r=holesize/2, h=40, $fn=20); + } +} + +module HolesScope(){ + intersection_for (dx=[-1,+1]) { + intersection_for (dy=[-1,+1]) { + translate([dx * holeedge, dy * holeedge, -5]) + scale([1,1,10]) + CoverTemplate(); + } + } +} + +module Holes(){ + imin = ceil((maxx-minx)/(sqrt(3)*holepitch)); + echo("Holes X count 2 x", imin); + intersection(){ + translate([holeoffx * holepitch, holeoffy * holepitch, 0]) { + for (i=[-imin:2]) { + translate([i * sqrt(3) * holepitch, 0, 0]) { + HoleRow(); + translate([sqrt(3)/2 * holepitch, -0.5 * holepitch, 0]) + HoleRow(); + } + } + } + HolesScope(); + } +} + +module CoverCover(){ + difference(){ + CoverTemplate(); + Holes(); + } } module Cover(){ - CoverTemplate(); - AtSides() { CoverSide(covershortlen); CoverSide(coverlonglen); } + difference(){ + union(){ + CoverCover(); + AtSides() { CoverSide(covershortlen); CoverSide(coverlonglen); } + } + AtSides() { CoverPegSlot(); CoverPegSlot(); } + } } module CoverAligned(){ @@ -197,11 +273,29 @@ module CoverAligned(){ Cover(); } +module DemoPeg(){ + translate([recessblockwidth/2, pegrecess, -height]) + Peg(); +} + module Demo(){ ////toplevel %Block(); DoKnives(); color([0,0,1]) CoverAligned(); + color([1,0,0]) AtSides() { DemoPeg(); DemoPeg(); } } -Demo(); +module CoverParts(){ ////toplevel + Cover(); + translate([0, coverlonglen, pegheight/2]) { + Peg(); + translate([-peghead-3, 0,0]) Peg(); + } +} + +//Block(); +//Demo(); +//Cover(); +//CoverParts(); +//Peg(); //Cover();