/Designs/Measuring_instruments/AWS02A/CAD/weather_sensor_screen.scad
File deleted
/Designs/Measuring_instruments/AWS02A/CAD/weather_sensor_screen_cap.scad
File deleted
/Designs/Measuring_instruments/AWS02A/CAD/src/weather_sensor_screen.scad
0,0 → 1,54
Clear=0.175; // size of tolerance zone
thickness = 2; // global wall thickness
height = 15; // height of one screen element
screen_radius = 75/2; // outer radius of screen
tube_radius=30/2; // inner radius of the space for a sensor
screen_bevel = 10; // bevel of outer screen wall
num_ribs = 3; // number of holding ribs
 
 
 
angle_sep = 360/num_ribs;
 
translate ([0,0,height])
// screen upper rim
difference () {
cylinder (h=thickness*2,r= screen_radius - screen_bevel,$fn=100);
translate ([0,0,-Clear/2])
cylinder (h=thickness*2 +Clear,r= (screen_radius - screen_bevel)- thickness ,$fn=100);
 
 
// screen upper rim gabs for ribs from another screen.
for (i = [0 : (num_ribs-1)]) {
rotate ([0,0,60 + (angle_sep * i)])
translate ([(screen_radius - screen_bevel)- thickness - Clear/2 ,-Clear/2,-Clear/2])
cube(size = [thickness + 2*Clear, thickness + Clear,thickness*2 + Clear]);
}
}
 
//screen
 
difference () {
cylinder (h=height,r1=screen_radius ,r2=screen_radius - screen_bevel,$fn=100);
translate ([0,0,-Clear/2])
cylinder (h=height+Clear,r1=screen_radius - thickness ,r2=(screen_radius - screen_bevel) - thickness,$fn=100);
}
 
 
//inner ring
inner_ring_thickness = thickness *2;
 
difference () {
cylinder (h=inner_ring_thickness,r = tube_radius + thickness,$fn=100);
translate([0,0,-Clear/2])
cylinder (h=inner_ring_thickness +Clear,r = tube_radius,$fn=100);
}
 
// center ribs
for (i = [0 : (num_ribs-1)]) {
rotate ([90,0,angle_sep * i])
translate ([0,0,-thickness/2])
linear_extrude (height = thickness, convexity = 10)
polygon(points=[[tube_radius + thickness, inner_ring_thickness],[tube_radius + thickness - Clear, 0],[screen_radius - thickness,0],[screen_radius - screen_bevel,height]]);
 
}
/Designs/Measuring_instruments/AWS02A/CAD/src/weather_sensor_screen_cap.scad
0,0 → 1,67
Clear=0.175; // size of tolerance zone
thickness = 2; // global wall thickness
height = 15; // height of one screen element
screen_radius = 75/2; // outer radius of screen
tube_radius=30/2; // inner radius of the space for a sensor
screen_bevel = 10; // bevel of outer screen wall
num_ribs = 3; // number of holding ribs
cap_radius = screen_radius * 1.5;
inner_ring_thickness = thickness *2;
 
 
angle_sep = 360/num_ribs;
 
cap_height = cap_radius - sqrt(cap_radius*cap_radius - (screen_radius - screen_bevel)*(screen_radius - screen_bevel));
 
difference () {
 
union() {
//cap outer shell
intersection () {
translate ([0,0,-cap_radius + height + cap_height])
sphere(cap_radius, $fn=100);
 
//screen outer shell
cylinder (h=screen_radius*(height/screen_bevel),r1=screen_radius ,r2=0,$fn=100);
}
 
// cap hook
translate ([0,0,height + (cap_height-thickness)])
difference () {
cylinder (h=height/2,r1=screen_radius/4,r2=screen_radius/4 - thickness,$fn=100);
 
translate ([0,screen_radius/4,2.5])
rotate ([90,0,0])
cylinder (h=screen_radius/2,r=3, $fn=100);
 
translate ([-screen_radius/4,0,2.5])
rotate ([0,90,0])
cylinder (h=screen_radius/2,r=3, $fn=100);
}
 
 
}
 
union() {
intersection () {
//cap inner cavity
translate ([0,0,-cap_radius + height + cap_height ])
sphere(cap_radius-thickness, $fn=100);
 
//screen inner cavity (height is solved by triangle similarity)
translate ([0,0, -Clear/2 ])
cylinder (h=(screen_radius - thickness)*(height/screen_bevel),r1=screen_radius - thickness ,r2=0,$fn=100);
}
}
}
 
 
 
// center ribs
for (i = [0 : (num_ribs-1)]) {
rotate ([90,0,angle_sep * i])
translate ([0,0,-thickness/2])
linear_extrude (height = thickness, convexity = 10)
polygon(points=[[0, cap_height + height],[tube_radius + thickness - Clear, 0],[screen_radius - thickness,0],[screen_radius - screen_bevel - thickness,height]]);
 
}