127 lines
8.3 KiB
Markdown
127 lines
8.3 KiB
Markdown
# Master Mechanical Assembly Manual & Quality Control Protocol
|
||
|
||
**System:** 6U 19-Inch Open-Source Tri-Mode Storage Array
|
||
**Document ID:** MECH-MAN-01
|
||
**Target Build Time:** ~60 to 90 Minutes (Sub-Assemblies + Final Integration)
|
||
**Required Tools:**
|
||
- 3.0mm & 4.0mm Hex / Allen Keys (or Hex Driver Bits)
|
||
- Temperature-Controlled Soldering Iron (with brass insert tip)
|
||
- Precision Machinist's Square (or Digital Calipers)
|
||
- Blue Threadlocker (Loctite 242 or equivalent)
|
||
- Calibrated Torque Screwdriver ($1.0 - 5.0\,\text{N}\cdot\text{m}$ range)
|
||
|
||
---
|
||
|
||
## 1. Master Mechanical Bill of Materials (BOM)
|
||
|
||
```
|
||
COMPLETE EXPLODED ENCLOSURE HIERARCHY
|
||
|
||
[SMP-01 Top Cover Plate]
|
||
│
|
||
┌───────────────────────┴───────────────────────┐
|
||
▼ ▼
|
||
[Left 2020 Ladder] [Right 2020 Ladder]
|
||
(EXT-01 x2, EXT-03 x2) (EXT-01 x2, EXT-03 x2)
|
||
│ │
|
||
├─────────► [EXT-02 Front/Rear Crossbars (x4)] ◄┤
|
||
│ │
|
||
[Front 3D Dovetail Facade] [SMP-05 Rear I/O Panel]
|
||
(4 Quadrants + 8 Caddies) (Honeycomb + PCIe Vents)
|
||
│ │
|
||
└───────► [3x 120mm Fan Wall Shroud] ◄──────────┘
|
||
(Acoustic Bellmouth Mid-Wall)
|
||
│
|
||
[SMP-02 Bottom Base Plate]
|
||
```
|
||
|
||
| Subsystem Component | Part Reference | Qty | Material / Sourcing | Unit Cost ($) | Total Cost ($) |
|
||
| :--- | :--- | :---: | :--- | :---: | :---: |
|
||
| **Vertical Corner Extrusions** | EXT-01 (260mm L) | 4 | 2020 T-Slot (80/20 / Faztek / Misumi) | $2.20 | $8.80 |
|
||
| **Width Crossbars** | EXT-02 (396mm L) | 4 | 2020 T-Slot (80/20 / Faztek / Misumi) | $2.80 | $11.20 |
|
||
| **Depth Side Rails** | EXT-03 (460mm L) | 4 | 2020 T-Slot (80/20 / Faztek / Misumi) | $3.20 | $12.80 |
|
||
| **Mid Fan-Wall Uprights** | EXT-04 (220mm L) | 2 | 2020 T-Slot (80/20 / Faztek / Misumi) | $1.90 | $3.80 |
|
||
| **Mid Crossbars** | EXT-05 (396mm L) | 2 | 2020 T-Slot (80/20 / Faztek / Misumi) | $2.80 | $5.60 |
|
||
| **Mezzanine Floor Braces** | EXT-06 (300mm L) | 2 | 2020 T-Slot (80/20 / Faztek / Misumi) | $2.40 | $4.80 |
|
||
| **Cast Aluminum Corner Gussets** | FAST-03 (20x20mm) | 24 | Cast Aluminum / Zinc Alloy | $0.20 | $4.80 |
|
||
| **M5x10mm BHSCS + M5 T-Nuts** | FAST-01 / FAST-02 | 48 | Class 10.9 Steel / Spring Roll-in | $0.12 | $5.76 |
|
||
| **M4x8mm BHSCS + M4 T-Nuts** | FAST-04 | 32 | Black Oxide Class 10.9 Steel | $0.08 | $2.56 |
|
||
| **M3 / M4 Brass Heat-Set Inserts**| FAST-05 / FAST-06 | 56 | Diamond Knurled Solid Brass | $0.05 | $2.80 |
|
||
| **Top & Bottom Laser Cut Plates** | SMP-01 / SMP-02 | 2 | 1.27mm 5052-H32 Aluminum (SendCutSend) | $5.30 | $10.60 |
|
||
| **Left & Right Exterior Skins** | SMP-03 / SMP-04 | 2 | 1.27mm 5052-H32 Aluminum (SendCutSend) | $3.10 | $6.20 |
|
||
| **Rear I/O & Exhaust Plate** | SMP-05 | 1 | 1.27mm 5052-H32 Aluminum (SendCutSend) | $4.80 | $4.80 |
|
||
| **6U Heavy-Duty Rack Ears (Pair)**| SMP-06L / SMP-06R | 2 | 3.00mm 5052-H32 Aluminum (SendCutSend) | $2.60 | $5.20 |
|
||
| **3D Facade & Drive Caddies** | Facade Q1-Q4 + 8 Sleds | 1 | PETG / ABS / ASA (Self-Printed / Hub) | $12.50 | $12.50 |
|
||
| **3D Fan Wall Pressure Shroud** | Fan Wall Left/Right | 1 | PETG / ABS / ASA (Self-Printed / Hub) | $4.50 | $4.50 |
|
||
| **TOTAL MECHANICAL PACKAGE** | — | — | **Complete 6U Enclosure Hardware** | — | **~$106.92** |
|
||
|
||
---
|
||
|
||
## 2. Step-by-Step Assembly Instructions
|
||
|
||
### Stage 1: Thermal Insertion of Brass Threaded Inserts
|
||
1. Preheat soldering iron to $230^\circ\text{C}$ (for PETG) or $265^\circ\text{C}$ (for ABS/ASA).
|
||
2. Insert **32x M3 brass inserts (FAST-05)** into:
|
||
- Facade Quadrants: 8x inserts (for lateral dovetail locking).
|
||
- Drive Caddies: 16x inserts (4 per caddy for 2.5" SSD mounting).
|
||
- Passive Backplane Mount: 8x inserts on inner guide rails.
|
||
3. Insert **24x M4 brass inserts (FAST-06)** into:
|
||
- Facade Frame Anchors: 12x inserts (top and bottom flanges).
|
||
- Fan Wall Shroud: 12x inserts (rear fan mounting bosses).
|
||
|
||
---
|
||
|
||
### Stage 2: 2020 Aluminum Skeleton Fabrication
|
||
1. **Assemble Left Side Ladder:**
|
||
- Place two EXT-01 uprights (260mm) and two EXT-03 side rails (460mm) in a rectangle.
|
||
- Install 4x FAST-03 corner gussets with M5x10mm screws (FAST-01) and M5 roll-in T-nuts (FAST-02).
|
||
- Square the corners ($90.0^\circ \pm 0.05^\circ$). Torque screws to **$4.5\,\text{N}\cdot\text{m}$**.
|
||
2. **Assemble Right Side Ladder:** Repeat identical procedure for the right frame.
|
||
3. **Bridge Frame with Crossbars:**
|
||
- Stand both side ladders upright.
|
||
- Install four EXT-02 crossbars (396mm) connecting the top-front, top-rear, bottom-front, and bottom-rear corners.
|
||
- Verify 3D diagonal cross-measurements ($L = 660.3\,\text{mm} \pm 0.5\,\text{mm}$).
|
||
4. **Install Internal Mid-Section & Mezzanine Rails:**
|
||
- Position the lower and upper EXT-05 mid-crossbars at $Y = 145.0\,\text{mm}$.
|
||
- Secure the two EXT-04 vertical stretchers (220mm) between them.
|
||
- Bolt the two EXT-06 mezzanine rails (300mm) across the bottom frame from $Y = 195.0\,\text{mm}$ to $495.0\,\text{mm}$.
|
||
|
||
---
|
||
|
||
### Stage 3: Fan Wall & Airflow Baffle Installation
|
||
1. Interlock the Left and Right halves of the 3D-printed fan wall shroud at the center lap joint.
|
||
2. Bolt 3x 120mm PWM fans (e.g., Noctua NF-F12 industrialPPC) to the rear face using M4x35mm screws into the embedded M4 brass inserts. Ensure arrows on fan bodies point **Rearward (Front-to-Back Airflow)**.
|
||
3. Slide the assembled fan wall into the mid-frame ($Y = 145.0\,\text{mm}$) and secure to EXT-04/EXT-05 with 6x M4x10mm screws into M4 drop-in T-nuts.
|
||
4. Route the 4-pin fan cables through the molded top raceway.
|
||
|
||
---
|
||
|
||
### Stage 4: Enclosure Skin & Sheet Metal Paneling
|
||
1. **Bottom Plate (SMP-02):** Secure to bottom extrusion channels using 16x M4x8mm button head screws into M4 T-nuts.
|
||
2. **Rear I/O Plate (SMP-05):** Align with rear frame opening; secure with 8x M4x8mm screws.
|
||
3. **Left & Right Side Panels (SMP-03 & SMP-04):** Align flush with outer extrusion faces; secure with 16x M4x8mm screws per side.
|
||
4. **Front Rack Ears (SMP-06L & SMP-06R):**
|
||
- Bolt 3.0mm aluminum rack ears directly to the front corner vertical uprights (EXT-01) using 5x M5x12mm screws with Blue Loctite 242 into M5 spring T-nuts. Torque to **$5.5\,\text{N}\cdot\text{m}$**.
|
||
|
||
---
|
||
|
||
### Stage 5: Facade Integration & Drive Caddy Seating
|
||
1. Interlock the 4 facade quadrants (Q1, Q2, Q3, Q4) via their precision dovetail pins.
|
||
2. Secure lateral locking screws (M3x8mm) into the embedded brass inserts.
|
||
3. Push the monolithic facade onto the front frame until flush; secure using 12x M4x12mm flathead screws into extrusion T-nuts.
|
||
4. Slide the 8 toolless drive caddies into the vertical bay channels. Confirm that the cam-action ejection levers click smoothly into the locked position.
|
||
5. **Top Cover Plate (SMP-01):** Fasten with 16x M4x8mm screws after internal electronics and cabling are connected.
|
||
|
||
---
|
||
|
||
## 3. Quality Control & Validation Checklist
|
||
|
||
Before deployment into a live server cabinet:
|
||
|
||
- [ ] **Dimensional Verification:** Outer chassis width $\le 438.0\,\text{mm}$; height $\le 263.0\,\text{mm}$.
|
||
- [ ] **Frame Rigidity & Squareness:** All 3D diagonal spans match within $< 0.5\,\text{mm}$; zero frame racking under $40\,\text{kg}$ downward static load.
|
||
- [ ] **Fastener Torque Check:** All M5 structural bolts verified at $4.5–5.5\,\text{N}\cdot\text{m}$; all M4 panel bolts at $2.5–3.0\,\text{N}\cdot\text{m}$.
|
||
- [ ] **Pneumatic Pressure Seal:** Fan wall perimeter gasket compressed with zero visible air gaps around shroud edges.
|
||
- [ ] **Toolless Caddy Insertion Force:** Smooth sliding along guide channels; positive latch engagement with $< 20\,\text{N}$ finger pressure.
|
||
- [ ] **Rack Ear Alignment:** Horizontal hole spacing measured at exactly $465.1\,\text{mm} \pm 0.2\,\text{mm}$; mounts cleanly onto standard rack rails.
|