trestlebase = 80; // fixme needs to be checked
include <doveclip.scad>
+include <axlepin.scad>
-spoolwidthgap = 2;
-barrady = 5;
-barradz = 7;
-guidewidth = 3;
-guiderad = 20;
+spoolinnerslop = 2;
-plugl = 12;
+barrad = 7;
+barwasherrad = 17;
+
+legw = 12;
+plugl = 20;
plugwmin = 3;
plugh = 10;
plugslope = 0.5;
trestlebaseh = 10;
trestleplugd = 1;
-topcylthick = 3;
-topcylbasedepth = 4;
+topblockthick = 4;
+topblockbasedepth = 5;
+
+pinbasew = 5.0;
+pinminh = 1.5;
+pinmaxh = 4.5;
+pindh = 0.50;
+pindwidth = 0.75;
+
+pintaperlen = plugwmax * 0.85;
+pinstraightlen = 10;
+
+spoolouterpad = AxlePin_holerad()*2 * 1.5;
+spoolbarlen = spoolwidth +
+ 2*(Washer_thick() + AxlePin_holerad() + spoolinnerslop + spoolouterpad);
module Plug(d=0){
- a = -atan(plugslope);
- tdx = d * cos(a);
- tdy = d * sin(a);
- bdx = d / cos(a);
+ dw = d;
+ dh = d;
+ dhb = d*2;
+ a = atan(plugslope);
+ bdy = -dhb;
+ bdx = dw / cos(a) + bdy * plugslope;
+ tdy = dh;
+ tdx = bdx + tdy * plugslope;
translate([-d,0,0]) rotate([90,0,90]) linear_extrude(height=plugl+0.1+d*2){
- polygon([[-(plugwmin/2 + bdx), 0],
+ polygon([[-(plugwmin/2 + bdx), bdy],
[-(plugwmax/2 + tdx), plugh + tdy],
[+(plugwmax/2 + tdx), plugh + tdy],
- [+(plugwmin/2 + bdx), 0]]);
+ [+(plugwmin/2 + bdx), bdy]]);
}
}
-module Bar(){
- spoolw = spoolwidth + spoolwidthgap*2;
- barz = barradz * 0.5;
+module Bar(){ ////toplevel
+ spoolw = spoolbarlen;
+ barz = barrad * 0.5;
biggestw = spoolw + 50;
intersection(){
for (mir=[0,1]) {
mirror([mir,0,0]) {
- translate([0,0,barz]) {
- scale([1,barrady,barradz]) translate([-1,0,0])
- rotate([0,90,0]) cylinder(r=1, h=spoolw/2+2, $fn=30);
- translate([spoolw/2,0,0])
- rotate([0,90,0]) cylinder(r=guiderad, h=guidewidth, $fn=60);
- }
- translate([spoolw/2 + guidewidth, 0, 0])
+ translate([spoolw/2, 0, 0])
Plug();
+ translate([-1, -50, -50])
+ cube([spoolw/2+1.1, 100, 100]);
+ }
+ }
+ difference(){
+ translate([-biggestw/2, -50, 0])
+ cube([biggestw, 100, 100]);
+ for (mir=[0,1]) {
+ mirror([mir,0,0])
+ translate([spoolwidth/2 + Washer_thick() + spoolinnerslop +
+ AxlePin_holerad()*0.5,
+ 0, -50])
+ cylinder(r=AxlePin_holerad(), 100, $fn=15);
}
}
- translate([-biggestw/2, -50, 0])
- cube([biggestw, 100, 100]);
+ translate([0,0,barz]) {
+ translate([-100,0,0])
+ rotate([0,90,0]) cylinder(r=barrad, h=200, $fn=30);
+ }
}
}
-module Trestle(){
+module FtAxlePin(){ ////toplevel
+ AxlePin(barrad, (barrad + barwasherrad*2)/3 * 2);
+}
+
+module AxleWasher(){ ////toplevel
+ Washer(barrad, barwasherrad);
+}
+
+module Trestle(){ ////toplevel
legang = atan2(trestlebase/2, trestleheight);
eplen = sqrt(trestleheight*trestleheight + trestlebase*trestlebase*0.25);
- topcylw = plugwmax + topcylthick*2;
+ topblockw = plugwmax + trestleplugd*2 + topblockthick*2;
+
+ pinholebasew = pinbasew + pindwidth*2;
+ pinholeh = pinmaxh + pindh;
difference(){
union(){
rotate([0,0, -90-legang])
ExtenderPillars(length=eplen+trestlelegw,
width=trestlelegw,
- height=plugl,
+ height=legw,
baseweb=true);
translate([-trestlebase/2, -trestleheight, 0])
cylinder(r=trestlelegw/2*1.2, h=plugl);
}
}
- translate([-topcylw/2, -topcylbasedepth, 0])
- cube([topcylw, topcylbasedepth + plugh + topcylthick, plugl]);
+ translate([-topblockw/2, -topblockbasedepth, 0])
+ cube([topblockw,
+ topblockbasedepth + plugh + topblockthick
+ + (pinmaxh - pinminh)*0.6 + pindh,
+ plugl]);
translate([-trestlebase/2, -trestleheight, 0])
- ExtenderPillars(length=trestlebase, width=trestlebaseh*2, height=plugl);
+ ExtenderPillars(length=trestlebase, width=trestlebaseh*2, height=legw);
}
translate([-300, -trestleheight-50, -1])
cube([600, 50, plugl+2]);
rotate([-90,-90,0])
Plug(d=trestleplugd);
+
+ for (rot=[0,180]) {
+ translate([0,0,plugl/2]) rotate([0,rot,0]) translate([0,0,-plugl/2]) {
+ translate([-(topblockw*0.25+1),
+ plugh + pindh - (pinmaxh - pinminh)*0.75,
+ (plugl - pinholebasew*2)/3]) {
+ translate([0,0,pinholebasew/2]) rotate([-90,0,0]) %Pin();
+ rotate([0,90,0]) {
+ linear_extrude(height = topblockw*1.0+2) {
+ polygon([[-1.0 * pinholebasew, -0.01],
+ [-0.5 * pinholebasew, pinholeh],
+ [ 0 , -0.01]]);
+ }
+ }
+ }
+ }
+ }
}
}
-//Bar();
-Trestle();
+module Pin(){ ////toplevel
+ rotate([90,0,90]) {
+ hull(){
+ for (mir=[0,1]) {
+ mirror([mir,0,0]) {
+ linear_extrude(height=0.1) {
+ polygon([[-0.01, 0],
+ [-0.01, pinminh],
+ [pinbasew*0.5*(pinminh/pinmaxh), 0]]);
+ }
+ translate([0,0,pintaperlen])
+ linear_extrude(height=pinstraightlen) {
+ polygon([[-0.01, 0],
+ [-0.01, pinmaxh],
+ [pinbasew*0.5, 0]]);
+ }
+ }
+ }
+ }
+ }
+}
+
+module TestKit(){ ////toplevel
+ translate([30,0,0]) Pin();
+ translate([30,30,0]) Pin();
+ translate([0,40,0]) intersection(){
+ Trestle();
+ translate([-50,-10,-1]) cube([100,100,100]);
+ }
+ intersection(){
+ translate([-60,0,0]) Bar();
+ cube(50,center=true);
+ }
+}
+Bar();
+//FtAxlePin();
+//AxleWasher();
+//Trestle();
+//Pin();
+//TestKit();
//Plug(d=1);
//ExtenderPillars(80,12,8, baseweb=true);