158 lines
5.7 KiB
OpenSCAD
158 lines
5.7 KiB
OpenSCAD
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include <BOSL2/std.scad>;
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include <BOSL2/beziers.scad>;
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include <Round-Anything/polyround.scad>
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$fn=64;
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OFFSET=0.01;
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/**
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* US Box profile
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* @param length - Length of the fin without the tab and back space
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*
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**/
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module boxProfileUS( length ,height=23, tabHeight = 8,tabLength = 20, backRounding = 8, backExtra = 10 ) {
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tabExtra = opp_ang_to_adj(height-tabHeight,45);
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points = [
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[ -tabLength , 0 ,1], // 0
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[ length+backExtra , 0 ,2], // 1
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[ length+backExtra , -height ,backRounding], // 2
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[ tabExtra , -height ,4], // 3
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[ 0 , -tabHeight ,4], // 4
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[ -tabLength , -tabHeight ,1] // 5
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];
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polygon(
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polyRound(points)
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);
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}
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function profileUS( length,height=23,tabHeight = 8,tabLength = 20, backRounding = 8, backExtra = 10 ) = polyRound([
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[ -tabLength , 0 ,1], // 0
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[ length+backExtra , 0 ,2], // 1
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[ length+backExtra , -height ,backRounding], // 2
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[ opp_ang_to_adj(height-tabHeight,45) , -height ,4], // 3
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[ 0 , -tabHeight ,4], // 4
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[ -tabLength , -tabHeight ,1] // 5
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]);
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module usBox( length, height=23, thickness = 9, tabLength = 20,pinDiameter = 5,pinInset = 8, backExtra = 10,cutReduction = 0.5,screw_diameter=4.5,drill = true, color="Grey" ) {
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color(color) mirror_copy([0,0,1], offset=-OFFSET) difference() {
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linear_extrude ( height = thickness/2 ) boxProfileUS( length, tabLength = tabLength, height=height, backExtra=backExtra );
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// Thickness cut
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translate([length + backExtra + OFFSET,-OFFSET,thickness/2-cutReduction+OFFSET])
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thickness_cut( cutReduction , height );
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// Pin drill
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if (drill) translate([length+backExtra-pinInset,-height+pinInset,0]) color("Red")
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cyl(h=thickness*2,d=pinDiameter,$fn=32);
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// Screw Cut
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if (drill) translate ([-tabLength/2,-height/2+OFFSET,0]) color ("Red") cyl( h=height, d=screw_diameter, orient=FRONT );
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}
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}
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module usBoxMold( length, height=23, thickness = 9, moldThickness = 4,tabLength = 20,part = "bottom",skirtAngle=80 ) {
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moldHeight = thickness + 2 * moldThickness;
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skirtHeight = 3 * thickness;
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deviation = opp_ang_to_adj (skirtHeight,skirtAngle); // Skirt devitation
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baseInt = profileUS (length);
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baseExt = offset(baseInt,delta=moldThickness , chamfer=false, same_length=true );
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topInt = offset(baseInt,delta=deviation , chamfer=false, same_length=true );
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topExt = offset(baseInt,delta=deviation+moldThickness , chamfer=false, same_length=true );
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union() {
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difference() {
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// Mold
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{
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if ( part == "bottom")
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down (moldHeight/2) linear_extrude(moldHeight)
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offset(r=moldThickness)
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boxProfileUS( length, height );
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if ( part == "top") {
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//baseInt = profileUS (length);
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//baseInt = profileUS (length);
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//topInt = offset(baseInt,delta=-deviation,chamfer=false,same_length=true);
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baseInt2 = offset(baseInt,delta=-moldThickness,chamfer=false,same_length=true);
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topInt2 = offset(baseInt,delta=deviation-moldThickness,chamfer=false,same_length=true);
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difference(){
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skin([baseInt , topInt ],z=[0,skirtHeight],slices=0);
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skin([baseInt2 , topInt2 ],z=[thickness/2,skirtHeight+OFFSET],slices=0);
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}
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/*
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down (moldHeight/2) linear_extrude(moldHeight)
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offset(r=moldThickness)
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boxProfileUS( length, height );
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*/
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}
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}
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// US Box to subtract
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usBox(length,height,drill=false,color="Red");
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// Mask Top
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verticalMask =
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part == "bottom" ? 0 :
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part == "top" ? moldHeight :
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100;
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down( verticalMask )
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linear_extrude( moldHeight )
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offset( r = moldThickness*2 )
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boxProfileUS( length, height );
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}
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if ( part == "bottom") {
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// offset is a function
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//topInt = offset(baseInt,delta=deviation,chamfer=false,same_length=true);
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showSkirt = true;
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if (showSkirt) difference(){
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skin([baseExt,topExt],z=[0,skirtHeight],slices=0);
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skin([baseInt,topInt],z=[0,skirtHeight+OFFSET],slices=0);
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}
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}
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if ( part == "top") {
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}
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}
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}
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//test = profileUS (100);
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//test2 = offset(test,30);
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//region1 =
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//region([test,test2]);
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//polygon(region1);
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module thickness_cut(thickness,height) {
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color("Orange")
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linear_extrude(thickness)
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polygon([
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[0 , 0 ],
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[0 , -height ],
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[-height*2 , -height ]
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]);
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}
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//boxProfileUS( length= 188);
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//usBox( 130,drill=false );
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usBoxMold( 130,part="top" );
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down(50) usBoxMold( 130,part="bottom" );
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