jbod

enclosure.scad (4076B)

---

 // 19-inch rack chassis details
 // ===========================================================================
 // width: 482.6mm +/- 0.4mm
 //
 // heights: +/- 0.4mm
 // units | height (mm) | h1 (mm) | h2 (mm) | h3 (mm)
 // ------+-------------+---------+---------+--------
 //  1U   | 44.45       | 43.65   | -       | 21.83
 //  ""   | ""          | ""      | 31.75   | 5.95
 //  2U   | 88.90       | 88.10   | 44.45   | 21.83
 //  ""   | ""          | ""      | 76.20   | 5.95
 //  3U   | 133.35      | 132.55  | 57.15   | 37.70
 //  4U   | 177.80      | 177.00  | 101.60  | ""
 //  5U   | 222.25      | 221.45  | 146.06  | ""
 //  6U   | 266.70      | 265.90  | 190.50  | ""
 // ------+-------------+---------+---------+-------
 //  - height : total height in mm of given rack units (including padding)
 //  - h1 : total height of front panel (excluding padding)
 //  - h2 : distance between mounting hole centres
 //  - h3 : distance between lower mounting hole centre and bottom of front panel
 //
 // depths: 800/1000/1200 mm
 //
 // faceplate mounting hole styles:
 // castellated:
 //   width: 14.7mm +/- 1.2mm
 //   height: 6.8mm +/- 0.5mm
 // regular:
 //   total width: 13.5mm +/- 0.4mm
 //   oval width:  10.3mm +/- 0.4mm
 //   height: 6.8mm +/- 0.5mm
 //
 // overall chassis: 4U, faceplate, body, spacer, lid
 // faceplate:
 //  - mesh front, 85% porosity
 //  - dust filter
 //  - rack handles
 //  - castellated faceplate 4U mounting holes
 // body (bottom + sides + rear):
 //  - w/h/d (mm): 483/178/800
 //  - external rack rails
 //  - 3x3 140mm fans, w/h/d (mm): 150/150/30
 //  - 6x12 3.5" disk slots, w/h/d (mm): 105/30/150
 // spacer:
 //  - w/d (mm): 483/800
 // lid:
 //  - tool-free (ptfe rollers and groove)
 
 $fn = 64;
 
 width = 482.6;
 depth = 800;
 
 unit_dims = [
 	[undef, undef, undef, undef],		// "0U"
 	[44.45, 43.65, 31.75, 5.95],		// 1U
 	[88.90, 88.10, 44.45, 21,83],		// 2U
 	[133.35, 132.55, 57.15, 37.70],		// 3U
 	[177.80, 177.00, 101.60, 37.70],	// 4U
 	[222.25, 221.45, 146.06, 37.70],	// 5U
 	[266.70, 265.90, 190.50, 37.70],	// 6U
 ];
 
 mounting_hole_dims = [
 	[14.7, 6.8],
 	[13.5, 6.8, 10.3],
 ];
 
 module logo() {
 	// TODO
 }
 
 module front_panel_mounting_hole(castellated = true) {
 	d = 6.8; r = d / 2;
 
 	if (castellated) {
 		w = 14.7; translate([0,-r,0]) %square([w,d]); // template	
 
 		r0 = w - r;
 
 		union() {
 			translate([0,-r,0]) square([w-r, d]);
 			translate([r0,0,0]) circle(r);
 		}
 	} else {
 		w = 13.5; translate([0,-r,0]) %square([w,d]); // template
 
 		o = 13.5 - 10.3;	// initial offset from side
 		r0 = r;			// 1st hole centre
 		r1 = 10.3 - r;		// 2nd hole centre
 
 		union() {
 			translate([o,0,0]) {
 				translate([r0,0,0]) circle(r);
 				translate([r0,-r,0]) square([r, d]);
 				translate([r1,0,0]) circle(r);
 			};
 		}
 	}
 }
 
 module front_panel_mesh(porosity = 0.85) {
 	// TODO
 }
 
 module front_panel(units = 4, mounting_holes = true, castellated = false, mesh = true, porosity = 0.85, thickness = 1.5) {
 	h0 = unit_dims[units][0]; // unit height (including padding)
 	h1 = unit_dims[units][1]; // front panel total height
 	h2 = unit_dims[units][2]; // distance between mounting hole centres
 	h3 = unit_dims[units][3]; // distance of mounting hole from panel bottom
 
 	linear_extrude(height=thickness, center=true, convexity=10) difference() {
 		square([width, h1]); // blank front panel
 
 		if (mounting_holes) {
 			translate([0,h3,0])
 				front_panel_mounting_hole(castellated=castellated);
 			translate([0,h3+h2,0])
 				front_panel_mounting_hole(castellated=castellated);
 
 			translate([width,h3,0]) scale([-1,1,1])
 				front_panel_mounting_hole(castellated=castellated);
 			translate([width,h3+h2,0]) scale([-1,1,1])
 				front_panel_mounting_hole(castellated=castellated);
 		}
 
 		if (mesh) {
 			front_panel_mesh(porosity=porosity);
 		}
 
 		logo(); // embossed logo
 	};
 }
 
 module body() {
 	linear_extrude(height=1, center=true, convexity=10) square(10);
 }
 
 module spacer() {
 	linear_extrude(height=1, center=true, convexity=10) square(10);
 }
 
 module lid() {
 	linear_extrude(height=1, center=true, convexity=10) square(10);
 }
 
 front_panel();
 // body();
 // spacer();
 // lid();