Subversion Repositories – MLAB

(root)/Designs/Measuring_instruments/AWS02A/CAD/src/rounded_screen/rounded_screen.scad @ 3886

Rev

r = 35;
h = 20.32;
thickness = 2;

/*
for(i=[[0,1],[1,-1],[2,1],[3,-1]]){
rotate([0,0,90*i[1]]){translate([0,0,i[0]*h]){shield_part();}}
}*/


shield_part();

module shield_part(){
        difference(){
                difference(){
                        translate([0,0,0.01]){scale(0.999){part(r,h);}}
                        resize([2*r-thickness*2,2*r-thickness*2,0]){part(r,h);}
                }
                union(){
                        translate([0,0,1.3*h-h/8]){cube([2*r/1.5,thickness,0.3*h],center=true);
                                                                                                cube([thickness,2*r/1.5,0.3*h],center=true);}
                }
        }

        difference(){
                difference(){
                        intersection(){
                                union(){
                                        translate([-thickness/2,thickness-r,0]){cube([thickness,2*r-thickness*2,h]);}
                                        translate([thickness-r,-thickness/2,0]){cube([2*r-thickness*2,thickness,h]);}
                                }
                                resize([2*r-thickness*2,2*r-thickness*2,0]){part(r,h);}
                        }
                        translate([0,0,-0.1]){cylinder(h=h,r=r/1.6-thickness,$fn=100);}
                }
                cylinder(h=h*2,r1=r/1.6-2*thickness,r2=r*0.8,$fn=100);  
        }
        rotate([0,0,45]){
                translate([0,0,h/6]){
                        union(){
                        difference(){
                                difference(){
                                        cube([sqrt(2*pow(r/1.6,2)),sqrt(2*pow(r/1.6,2)),h/3],center=true);
                                        cube([sqrt(2*pow(r/1.6,2))-thickness*2,sqrt(2*pow(r/1.6,2))-thickness*2,h/2],center=true);
                                }
                                rotate([0,90,0]){
                                        translate([0,(sqrt(2*pow(r/1.6,2))+thickness)/4,0]){
                                                cube([1.5*thickness,4*thickness,sqrt(2*pow(r/1.6,2)+thickness)+thickness],center=true);
                                        }
                                }
                        }
                        translate([(sqrt(2*pow(r/1.6,2))-thickness*3)/2,-(sqrt(2*pow(r/1.6,2))+thickness)/4,2.9*h/6]){
                                cube([thickness,thickness*3.95,h*1.3],center=true);}
                        translate([-(sqrt(2*pow(r/1.6,2))-thickness*3)/2,-(sqrt(2*pow(r/1.6,2))+thickness)/4,2.9*h/6]){
                                cube([thickness,thickness*3.95,h*1.3],center=true);}

                        translate([-(sqrt(2*pow(r/1.6,2))-thickness*3)/2-thickness,-(sqrt(2*pow(r/1.6,2))+thickness)/4,h-(1.5*thickness/6)+0.05]){
                                rotate([0,0,90]){
                                        difference(){
                                                cube([thickness*3.95,thickness,thickness],center=true);
                                                translate([-thickness*2,thickness/2,-thickness/2]){rotate([45,0,0]){cube(thickness*4);}}
                                        }
                                }
                        }
                        translate([(sqrt(2*pow(r/1.6,2))-thickness*3)/2+thickness,-(sqrt(2*pow(r/1.6,2))+thickness)/4,h-(1.5*thickness/6)+0.05]){
                                rotate([0,0,-90]){
                                        difference(){
                                                cube([thickness*3.95,thickness,thickness],center=true);
                                                translate([-thickness*2,thickness/2,-thickness/2]){rotate([45,0,0]){cube(thickness*4);}}
                                        }
                                }
                        }
                }
                }
        }
}

module part(r,h){
        difference(){
                intersection(){
                        translate([-r,-r,0]){cube([2*r,2*r,h]);}
                        cylinder(h=h, r=r,$fn=100);
                }
                translate([0,0,h/5]){
                        difference(){
                                translate([-r,-r,0]){cube([r*2,r*2,h+1]);}
                                resize([0,0,h*5/3]){sphere(r=r,$fn=100);}
                        }
                }
        }
        cylinder(h=1.3*h,r=r/1.5,$fn=100);
}