From 16de8939075496b1ed1451b3c34032c25b94b108 Mon Sep 17 00:00:00 2001 From: clifford Date: Thu, 21 Jan 2010 09:54:06 +0000 Subject: Clifford Wolf: Added examples/example020.scad (screw and nut) git-svn-id: http://svn.clifford.at/openscad/trunk@325 b57f626f-c46c-0410-a088-ec61d464b74c diff --git a/examples/example020.scad b/examples/example020.scad new file mode 100644 index 0000000..8322939 --- /dev/null +++ b/examples/example020.scad @@ -0,0 +1,39 @@ + +module screw(type = 2, r1 = 15, r2 = 20, n = 7, h = 100, t = 8) +{ + linear_extrude(height = h, twist = 360*t/n, convexity = t) + difference() { + circle(r2); + for (i = [0:n-1]) { + if (type == 1) rotate(i*360/n) polygon([ + [ 2*r2, 0 ], + [ r2, 0 ], + [ r1*cos(180/n), r1*sin(180/n) ], + [ r2*cos(360/n), r2*sin(360/n) ], + [ 2*r2*cos(360/n), 2*r2*sin(360/n) ], + ]); + if (type == 2) rotate(i*360/n) polygon([ + [ 2*r2, 0 ], + [ r2, 0 ], + [ r1*cos(90/n), r1*sin(90/n) ], + [ r1*cos(180/n), r1*sin(180/n) ], + [ r2*cos(270/n), r2*sin(270/n) ], + [ 2*r2*cos(270/n), 2*r2*sin(270/n) ], + ]); + } + } +} + +module nut(type = 2, r1 = 16, r2 = 21, r3 = 30, s = 6, n = 7, h = 100/5, t = 8/5) +{ + difference() { + cylinder($fn = s, r = r3, h = h); + translate([ 0, 0, -h/2 ]) screw(type, r1, r2, n, h*2, t*2); + } +} + +translate([ -30, 0, 0 ]) +screw(); + +translate([ 30, 0, 0 ]) +nut(); -- cgit v0.10.1