Der CNC machining electric hot water dispenser prototype process is a structured workflow that turns design concepts into physical prototypes, validating appearance, Strukturstabilität, Montagemöglichkeit, und Kernfunktionen (Z.B., Heizung, Temperaturregelung, anti-dry burning). This article breaks down the process step-by-step—from preliminary preparation to delivery—using data-driven tables, praktische Richtlinien, and troubleshooting tips to help you overcome key challenges and ensure prototype success.
1. Vorläufige Vorbereitung: Definieren Sie Ziele & Wählen Sie Materialien aus
Preliminary preparation lays the groundwork for the entire machining process. It focuses on clarifying project objectives and choosing materials that meet the electric hot water dispenser’s unique needs (Z.B., Lebensmittelsicherheit, Hochtemperaturbeständigkeit).
1.1 Projektziele
The core goals of developing an electric hot water dispenser prototype via CNC machining are:
- Verifizieren appearance design (Z.B., shell shape, water level window integration) aligns with brand aesthetics.
- Prüfen Strukturelle Rationalität (Z.B., thin-wall shell durability, heating plate installation stability).
- Confirm Montagemöglichkeit (Z.B., Bauteilpassung, wiring space, seal installation).
- Bestätigen functional practicality (Z.B., heating speed, temperature control accuracy, anti-dry burning response, leak-proof performance).
Why are these goals critical? Ignoring objective alignment can lead to misdirected machining—for example, prioritizing appearance over anti-dry burning safety, which requires 40–50% more rework time and costs.
1.2 Materialauswahl: Passen Sie Eigenschaften an Komponenten an
Different parts of the electric hot water dispenser demand materials with specific characteristics. Die folgende Tabelle vergleicht die am besten geeigneten Optionen, sowie deren Verwendungszwecke und Verarbeitungsanforderungen:
| Komponente | Material | Schlüsseleigenschaften | Verarbeitungsanforderungen | Kostenbereich (pro kg) |
| Body Shell | Aluminiumlegierung (6061/6063) | Leicht, Einfach zu maschine, korrosionsbeständig | Eloxiert (matte black/silver), sandblasted surface (Ra1.6~Ra3.2) | \(6- )10 |
| Liner Water Tank | 304 Edelstahl | Food-grade, high-temperature/corrosion-resistant | Mirror polishing (Ra≤0.2μm), thickness 1.0~1.5mm | \(15- )22 |
| Heizplatte | Brass/Aluminum (Plated) | Hohe thermische Leitfähigkeit, anti-oxidation | Surface nickel plating, power density matching design specs | \(12- )18 |
| Transparent Water Level Window | Acrylic/PC Board | Hohe Transparenz, temperature-resistant (-20°C~120°C) | Edge polishing chamfer (R1~R2mm), anti-fog coating | \(8- )12 |
| Elektrische Komponenten | Nylon/POM | Insulated, flammretardant, arc-resistant | Used for brackets, button panels; keine scharfen Kanten | \(4- )7 |
| Sealing Ring | Silikon | Wasserdicht, leak-proof, high-temperature-resistant (-20°C~200°C) | Seals tank-lid junction; geformt (nicht CNC-gefräst) | \(9- )13 |
| Temperature Control Element | Aluminum Substrate + PTC Thermostat | Hohe Genauigkeit, anti-dry burning | Embedded installation, accuracy ±1°C | \(10- )15 |
Beispiel: Der liner water tank Verwendung 304 stainless steel to meet FDA food safety standards, while the Heizplatte chooses brass for its superior thermal conductivity—cutting heating time by 20% compared to regular aluminum.
2. CNC -Bearbeitungsprozess: Von der Programmierung bis zur Komponentenfertigung
Die CNC-Bearbeitungsphase ist der Kern der Prototypenerstellung. Es folgt einem linearen Arbeitsablauf: Programmierung & process planning → key component machining → surface treatment.
2.1 Programmierung & Prozessplanung
Precise programming ensures components match design specifications. Verwenden Sie CAM -Software (Z.B., Mastercam, PowerMill) to generate toolpaths and set parameters:
- 3D Model Splitting: Divide the prototype into independent parts (Hülse, Liner, Base, heating plate bracket) for separate programming.
- Einstellung der Schnittparameter:
| Bearbeitungsstufe | Werkzeugtyp | Geschwindigkeit (Drehzahl) | Füttern (mm/min) | Schnitttiefe (mm) |
| Rauen | Large-diameter flat knife (φ12~φ20mm) | 8000~12000 | 2000~3000 | 1~2 |
| Fertig | Small-diameter ball head knife (φ4~φ6mm) | 15000~20000 | 800~1200 | 0.1~0.2 |
| Hole Drilling | Drill bit (φ2~φ8mm) + Klopfen (M3~M6) | 5000~8000 | 500~1000 | N / A (drill to depth) |
- Besondere Prozesse:
- Liner Mirror Polishing: First rough-grind with a CNC grinder, then hand-polish to Ra≤0.2μm (ensures easy cleaning and no water residue).
- Heating Plate Groove: Use five-axis linkage machining for complex curved surfaces (Toleranz ± 0,05 mm) to ensure tight fit with the liner.
2.2 Tipps zur Bearbeitung wichtiger Komponenten
Each component requires tailored strategies to avoid defects:
- Body Shell (Dünnwandig <2mm): Add temporary process ribs during machining (removed post-production) um Verformungen zu verhindern; use symmetrical cutting to reduce internal stress.
- Liner Water Tank: Ensure the bottom surface (contact with heating plate) has flatness ≤0.05mm (maximizes heat transfer efficiency); reserve 0.1~0.2mm thermal expansion gap around the heating plate groove.
- Transparent Water Level Window: Chamfer and polish edges after drilling; attach non-slip rubber strips to prevent scratches during assembly and use.
3. Montageprozess: Bauen & Testfunktionalität
Assembly transforms machined components into a functional prototype. Follow a sequential workflow to ensure accuracy and safety.
3.1 Schritt-für-Schritt-Montage
- Core Component Pre-Installation:
- Embed the Heizplatte + PTC thermostat into the liner bottom; test heating wire insulation with a 1000V high-voltage test (insulation resistance ≥100MΩ is qualified).
- Montieren Sie die water level sensor (float or capacitive type) on the liner side; hide wiring inside the body to avoid interference.
- Enclosure Assembly:
- Secure the body shell with buckles + Schrauben; install the control panel, indicator lights, and buttons (align with pre-machined holes).
- Fix the transparent water level window with silicone sealant (heilen für 24 Std.) to ensure waterproofing.
- Electrical Connections:
- Connect the circuit board to the heating plate, thermostat, and display screen; protect wires with insulating sleeves (≥3mm distance from the shell to meet safety standards).
3.2 Checkliste für Funktionstests
Validate the prototype’s performance with targeted tests:
| Testkategorie | Werkzeuge/Methoden | Kriterien übergeben |
| Heating Performance | Thermometer, stopwatch | Heats 1L water from 25°C to 95°C in ≤5 minutes |
| Temperature Control Accuracy | Digital thermometer | Actual temperature error ≤±2°C (Z.B., 85°C set → 83°C~87°C actual) |
| Anti-Dry Burning Protection | Power meter, empty tank test | Automatically cuts power within ≤10 seconds when tank is empty |
| Versiegelungstest | Wasserfüllung, inverted tank | No leakage after inverting a full tank for 12 Std. |
| Mensch-Computer-Interaktion | Touch tester, brightness meter | Touch response <0.5S; display brightness uniform; alarm light triggers correctly (Z.B., low water) |
4. Qualitätskontrolle & Lieferung
Strict quality control ensures the prototype meets standards, while clear delivery terms streamline project handover.
4.1 Qualitätskontrollstandards
| Testing Item | Werkzeuge | Standards |
| Dimensionsgenauigkeit | Koordinatenmessmaschine (CMM) | Critical dimensions: ± 0,05 mm; Non-critical dimensions: ± 0,1 mm |
| Visuelle Inspektion | 10x Magnifying Glass, Visual Check | No scratches, Gruben, or chromatic aberration; edge chamfering uniform |
| Überprüfung der Baugruppe | Torque Wrench | Screw torque meets specs (Z.B., M3 screws: 10~12N·m) |
| Electrical Safety | Insulation Resistance Tester | Insulation resistance ≥100MΩ; withstands 1000V voltage test |
4.2 Delivery Details
| Artikel | Beschreibung |
| Deliverables | 1 fully assembled prototype, 2 spare sealing rings, 1 test report (with heating curves/leakage data), 1 operation video |
| Processing Cycle | 10~15 working days (includes material preparation, Bearbeitung, Oberflächenbehandlung, Montage, Testen) |
| Reference Cost | \(1,200~ )2,200 (varies by material complexity and process requirements) |
Perspektive der Yigu -Technologie
Bei Yigu Technology, Wir sehen die CNC machining electric hot water dispenser prototype process als a “safety validator”—it identifies design flaws early to avoid mass production risks. Unser Team priorisiert zwei Säulen: precision and safety. For liners, Wir verwenden 304 stainless steel with mirror polishing (Ra≤0.2μm) to meet global food standards. For heating systems, we reserve 0.1~0.2mm thermal expansion gaps to prevent high-temperature deformation. Wir integrieren auch die 3D-Scan-Nachbearbeitung, um die Maßhaltigkeit zu überprüfen (± 0,03 mm), Reduzierung der Nacharbeitsraten um 25%. Indem wir uns auf diese Details konzentrieren, we help clients reduce time-to-market by 1~2 weeks. Egal, ob Sie ein Erscheinungsbild oder einen funktionalen Prototyp benötigen, we tailor solutions to meet electrical safety standards (Z.B., IEC 60335).
FAQ
- Q: How long does the entire CNC machining electric hot water dispenser prototype process take?
A: Typically 10~15 working days. This includes 1~2 days for preparation, 3~4 days for machining, 1~2 days for surface treatment, 2~3 days for assembly, and 1~2 days for testing/quality control.
- Q: Can I replace 304 stainless steel with aluminum alloy for the liner water tank?
A: NEIN. Aluminum alloy is not food-safe for direct water contact (may leach metals into hot water) and lacks 304 stainless steel’s corrosion resistance. Using aluminum alloy would fail FDA/EC 1935 standards and require full prototype rework.
- Q: What causes slow heating, and how to fix it?
A: Common causes are poor contact between the heating plate and liner (Ebenheit >0.05mm) or low heating plate power density. Korrekturen: Re-polish the liner bottom to flatness ≤0.05mm; replace the heating plate with one that matches design power density (Z.B., 1500W for 1L tanks). This resolves slow heating in 1~2 hours.