From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Tue, 27 Feb 2024 15:07:32 +0000 (+0100)
Subject: radiacni stit - prvni tisknuta verzze
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=91cdd8119ddc28fbf4a7fce22bb444a095f527e9;p=things.git

radiacni stit - prvni tisknuta verzze
---

diff --git a/radiacni-stit.scad b/radiacni-stit.scad
new file mode 100644
index 0000000..9e20d74
--- /dev/null
+++ b/radiacni-stit.scad
@@ -0,0 +1,91 @@
+include <yenyalib.scad>
+
+$fn = 128;
+infty = 500;
+inner_d = 80;
+outer_d = 95;
+cone_h = 20;
+wall = 1.5;
+base_wall = 3;
+cone_angle = atan((outer_d-inner_d)/(2*cone_h));
+shield_h = 80;
+shield_twist = 30;
+blade_wall = 2.5;
+blades = 12;
+blade_w = 4*inner_d/blades;
+blade1_w = 4;
+blade_rot = 16;
+shield_r1 = inner_d/2 - blade_w/2*sin(blade_rot) - 1.5*wall;
+shield_r2 = 1.1*shield_r1;
+
+beam_w = 10;
+beam_h = 15;
+beam_l = inner_d/2 + 60;
+beam_end_l = 20;
+beam_end_h = 0.35*beam_h;
+
+for (angle = [0:30:360]) Rz(angle) {
+	// main blades
+	linear_extrude(height = shield_h, twist = shield_twist,
+		center=false, scale=shield_r2/shield_r1) {
+			Ty(shield_r1) Rz(blade_rot) {
+				Sx(blade_w/blade_wall) circle(r=blade_wall/2);
+				Tx(-blade_w/3) Ty(blade_wall/2) Sx(0.5) circle(r=blade_wall/2);
+			}
+		}
+	// counter-direction struts
+	linear_extrude(height = shield_h, twist = -shield_twist,
+		center=false, scale=shield_r2/shield_r1)
+		Ty(shield_r1)
+			Sx(blade1_w/blade_wall) circle(r=blade_wall/2);
+}
+
+// top cone
+difference() {
+	union() {
+		cylinder(r1 = inner_d/2, r2 = outer_d/2, h = cone_h);
+		// beam
+		Tz(beam_w/3) Ry(90) Sx(3*beam_h/(2*beam_w))
+			 cylinder(r = beam_w/2, h = beam_l);
+		// beam_end
+		
+	}
+	Tz(-eps) cylinder(r1 = inner_d/2 - wall/cos(cone_angle),
+		r2 = outer_d/2 - wall/cos(cone_angle),
+		h = cone_h + 2*eps);
+	// z negative
+	translate([-infty/2, -infty/2, -infty]) cube(infty);
+	// beam end
+	translate([beam_l-beam_end_l, -beam_w/2, beam_end_h])
+		cube([beam_end_l+eps, beam_w, beam_h]);
+	// beam screw hole
+	Tx(beam_l-beam_w/2) Tz(-eps) cylinder(r=2.5, h = beam_end_h + 2*eps);
+	
+}
+
+// base plate
+cylinder(r = inner_d/2, h = base_wall);
+
+clip_d = 50+0.25;
+// clips
+clip_r1 = 1.5;
+clip_r2 = 8*clip_r1;
+clip_end_r = 5;
+clip_h = 3.25;
+Tz(base_wall)
+for (angle = [0:120:360]) Rz(angle) difference() {
+	hull() {
+		Tx(clip_d/2) Sy(clip_r2/clip_r1)
+			cylinder(r = clip_r1, h = clip_h + wall);
+		Tx(clip_d/2) Ty(clip_r2-clip_end_r) difference() {
+			cylinder(r = clip_end_r, h = clip_h + wall);
+			translate([0, -2*clip_end_r, -eps])
+				cube([4*clip_end_r, 4*clip_end_r, clip_h + wall +2*eps]);
+		} 
+	}
+	Tz(-eps) difference() {
+		cylinder(r = clip_d/2, h = clip_h+eps);
+		Ty(clip_r2-clip_end_r) Tz(-eps)
+			cube([clip_d, clip_d, clip_h+3*eps]);
+	}
+}