unfinished version of the front connector

1 files changed, 83 insertions, 0 deletions

diff --git a/connector_front.scad b/connector_front.scad
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+// PARAMETERS 
+
+// space above hdd available for air flow
+cooling_height = 10;
+
+// thickness of the support bar
+bar_thickness = 10;
+
+// diameter of thread rod used for support
+rod_diameter = 4;
+
+// dimensions of HDDs; not model-specific; current values are fake
+hdd_width = 80;
+hdd_height = 30;
+hdd_length = 100;
+
+// dimensions of the L-shaped rail between front and back
+rail_width = 15;
+rail_height = rail_width;
+rail_thickness = 1;
+
+// dimension of a single hdd tray (hdd + space around)
+tray_height = hdd_height + cooling_height + rail_thickness;
+tray_width = hdd_width + bar_thickness;
+
+pla_epsilon = 0.1;
+
+
+// CONSTRUCTION
+
+module nipple(e = 0) {
+  rotate([0, 180, 0])
+  cylinder(h = bar_thickness / 4 + e, r1 = bar_thickness / 4 + e, r2 = 0, $fs=0.1);
+}
+
+module half() difference() {
+  union() {	 
+    // upper horizontal bar
+    translate([0, 0, tray_height - bar_thickness])
+      cube([tray_width / 2, bar_thickness, bar_thickness]);
+
+    // vertical bar
+    cube([bar_thickness/2, bar_thickness, tray_height]);
+
+    // lower horizontal bar
+    cube([bar_thickness/2 + rail_width + pla_epsilon, bar_thickness, bar_thickness]);
+
+    // vertical thread bold receiver
+    translate([0,                            bar_thickness, tray_height-bar_thickness]) cube([bar_thickness/2, bar_thickness, bar_thickness]);
+    translate([tray_width/2 - bar_thickness, bar_thickness, tray_height-bar_thickness]) cube([bar_thickness, bar_thickness, bar_thickness]);
+
+    // male downward positioning nippel
+    translate([rail_width, bar_thickness / 2, 0]) nipple();
+  }
+
+  // receiver for rail
+  translate([bar_thickness/2 - rail_thickness, 0, bar_thickness - rail_thickness]) {
+    cube([rail_thickness, bar_thickness, rail_height]);
+    cube([rail_width, bar_thickness, rail_thickness]);
+  }
+
+  // holes for thread rods (horizontal, vertical)
+  translate([0, bar_thickness / 2, 0])
+    cylinder(h = tray_height, r = (rod_diameter + pla_epsilon) / 2, $fs=0.1);
+  translate([0, bar_thickness * 1.5, tray_height - bar_thickness / 2]) rotate([0, 90, 0])
+    cylinder(h = tray_width / 2, r = (rod_diameter + pla_epsilon) / 2, $fs=0.1);
+
+  // female downward positioning nippel
+  translate([rail_width, bar_thickness / 2, tray_height]) nipple(pla_epsilon);
+}
+
+difference() {
+  union() {
+    half();
+    mirror() half();
+  }
+
+  // female leftward positioning nippel
+  # translate([-tray_width/2, bar_thickness / 2, tray_height - bar_thickness / 2]) rotate([0, 270, 0]) nipple(pla_epsilon);
+}
+
+// male rightward positioning nippel
+translate([tray_width / 2, bar_thickness / 2, tray_height - bar_thickness / 2]) rotate([0, 270, 0]) nipple();