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107 lines
2.3 KiB
107 lines
2.3 KiB
$fs=0.0001;
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axis_radius = 10;
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piston_lenght = 15;
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piston_radius = 4;
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piston_tickness = 1;
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inner_lenght = 6;
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spacing = 0.05;
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scale([100, 100, 100]){
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//rotating part
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union(){
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difference(){
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cylinder(1, axis_radius, axis_radius, true);
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cylinder(10, 2, 2, true);
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}
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translate([0, axis_radius*.7, 0.5]){
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cylinder(1, 2, 2);
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translate([0,0,1])
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cylinder(2, 1, 1);
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translate([0, 0, 2.6])
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cylinder(1, 2, 2);
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}
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translate([0, 0, -4]){
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cylinder(10, 2, 2, true);
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}
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}
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height = 2.3;
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//axis
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union(){
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translate([0, 0, height]){
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translate([0, -axis_radius*.5, 0]){
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cube(size = [1, 2.1*axis_radius, 1], center = true);
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translate([0, -2.1*axis_radius/2-1.6/2, 0])rotate([0, 0, 0]){
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difference(){
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cylinder(1.5, 1.5, 1.5, true);
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cylinder(4, 0.7, 0.7, true);
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}
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}
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}
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translate([0, axis_radius*.7, 0]){
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difference(){
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cylinder(1.5, 1.8, 1.8, true);
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cylinder(2, 1+spacing, 1+spacing, true);
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}
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}
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}
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}
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//piston holder
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translate([0, 0, 0])
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difference(){
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rotate([90, 0,0])translate([0, height, axis_radius/2+piston_lenght]){
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difference(){
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cylinder(piston_lenght, piston_radius, piston_radius, true);
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translate([0, 0, -piston_tickness]){
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cylinder(2*piston_lenght, piston_radius-piston_tickness, piston_radius-piston_tickness, true);
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}
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}
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};
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translate([0,-12.5,height])rotate([0, 90, 0])translate([0,0,-5])cylinder(10, 1.5, 1.5);
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}
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//piston
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inner_piston_r = piston_radius - piston_tickness - spacing;
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difference(){
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translate([0, 0, height])rotate([0, 90, 0])translate([0,0,-height])union(){
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rotate([90, 0,0])translate([0, height, axis_radius/2+piston_lenght-inner_lenght/2]){
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difference(){
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cylinder(inner_lenght, inner_piston_r, inner_piston_r, true);
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translate([0, 0, -piston_tickness]){
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cylinder(inner_lenght, inner_piston_r-piston_tickness, inner_piston_r-piston_tickness, true);
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}
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}
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}
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translate([0, -axis_radius*.5-2.1*axis_radius/2-1.6/2, height])rotate([0, 90, 0]){
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cylinder(2*(inner_piston_r-piston_tickness), 0.7-spacing, 0.7-spacing, true);
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}
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}
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translate([0,-14,height])rotate([0, 90, 0])translate([0,0,-5])cylinder(10, 1.5, 1.5);
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}
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}
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