arm_depth = 25;
arm_innerwidth = 9.60 - 0.50;
arm_innerheight = 8.90 - 0.50;
-arm_pin_depth = (16.15 + 18.00)/2;
-arm_pin_dia = 1.5;
+arm_pin_depth = 18.50 + 1.0;
+arm_pin_dia = 1.5 + 0.7;
armpart_hex_rad = 15;
armpart_main_thick = 8;
-hingepin_dia = 3;
-hingenut_width = 6;
+hingepin_dia = 3 + 1.0;
+hingenut_width = 6 + 1.0;
hingenut_depth = 4;
+hingenut_clear = 5;
-headpart_main_dia = 15 - 0.3;
-headpart_main_len = 14;
+headpart_main_dia = 15 + 0.3;
+headpart_main_len = 16 + 1.1;
headpart_stub_protrude = 2;
-headpart_stub_width = 11.7 - 0.3;
+headpart_stub_width = 11.7 - 0.6;
headpart_flatten_angle = 45;
// computed
+armpart_hinge_height = arm_innerheight + hingenut_width/2 + hingenut_clear;
+armpart_main_height = armpart_hinge_height + headpart_stub_width / 2;
+armpart_main_width = headpart_stub_width;
armpart_x_unit = armpart_hex_rad * tan(30);
headpart_flatten_z = headpart_main_dia/2 * cos(headpart_flatten_angle);
headpart_stub_support_x = headpart_stub_width * cos(59) / 2;
mirror([0,-1,0])
cube([arm_innerwidth, arm_depth+1, arm_innerheight]);
translate([0, -arm_pin_depth, -50])
- cylinder(r=arm_pin_dia/2, h=100);
+ cylinder(r=arm_pin_dia/2, h=100, $fn=20);
+ }
+ difference(){
+ translate([-armpart_main_width/2, 0, 0])
+ cube([armpart_main_width, armpart_main_thick, armpart_main_height]);
+ translate([0,50,armpart_hinge_height])
+ rotate([90,0,0])
+ cylinder(r=hingepin_dia/2, h=100, $fn=20);
}
- rotate([90,0,180])
- linear_extrude(height=armpart_main_thick)
- for (mir=[0,1])
- mirror([mir,0,0])
- difference(){
- polygon([[-1, 0],
- [armpart_x_unit, 0],
- [armpart_x_unit*2, armpart_hex_rad],
- [armpart_x_unit, armpart_hex_rad*2],
- [-1, armpart_hex_rad*2]]);
- translate([0,armpart_hex_rad])
- circle(hingepin_dia/2, $fn=20);
- }
}
module HeadPart(){ ////toplevel