1. Pre-CNC Machining: Design and Preparation for Electric Face Wash Prototypes
Before initiating Mecanizado CNC for the electric face wash prototype, a systematic design and preparation stage is critical to meet functional, seguridad, and user experience requirements. This stage follows a linear sequence, with key details organized in the table below.
| Design Step | Requisitos clave | Materiales recomendados |
| Product Demand Analysis | Core functions: Vibration frequency (8000-12000 Rpm, 2-3 adjustable gears), IPX7 waterproof (safe for wet use), rechargeable battery (5V/1A, 2-3 hours charging for 40-60 minutes use); Apariencia: Ergonomic grip (fits palm, diameter 30-40mm), compact size (length 150-180mm); Reserve space for motor, battery compartment, USB-C charging port, and power/gear buttons. | – |
| Diseño estructural | Estructura interna: Motor mounting slot (coaxial with brush head spindle, coaxiality tolerance ≤0.05mm), battery fixing ribs, circuit board cavity; External structure: Non-slip texture on grip area, button grooves (depth 2-3mm), brush head connection interface (threaded or snap-fit); Add waterproof sealing grooves at housing joints. | – |
| 3D Modelado & Simulación | Utilice el software CAD (Solidworks, Y nx) to design split housing (upper/lower shells); Mark key dimensions: Motor slot diameter (matches motor outer diameter, gap 0.1mm), brush head interface thread (M10×1), charging port cutout (USB-C size, 8.4×2.6mm); Use Ansys to simulate vibration stability (no abnormal noise at max RPM) and waterproof performance (sealing groove pressure resistance ≥0.1MPa). | – |
| Selección de material | Prioritize water resistance, durabilidad, and skin-friendly properties, while matching mass production standards. | Alojamiento: ABS/PC alloy (impermeable, resistente al impacto, wall thickness 1.5-2mm) o aleación de aluminio 6061 (ligero, fácil de pulir); Brush Head: Silicona de grado médico (suave, no irritante, pore size 0.5-1mm); Internal Support: PA66 nylon (insulated, resistente al desgaste) o aleación de aluminio (motor bracket). |
| Material Pretreatment | Cut raw materials into blanks (leave 0.5-1mm machining allowance): ABS/PC via laser cutting, aluminum alloy via bandsaw; Dry ABS/PC (80-100° C para 2-3 horas) Para eliminar la humedad (prevents machining bubbles); Anneal aluminum alloy (300-350° C para 1-2 horas) Para reducir el estrés interno. | – |
2. CNC Machining Preparation for Electric Face Wash Prototypes
Adequate preparation before machining ensures efficiency and precision in Mecanizado CNC for face wash prototypes. This section covers tool selection, programación, and fixture design.
2.1 Tool and Parameter Selection
The right tools and parameters directly impact machining quality and efficiency. The table below provides detailed recommendations:
| Categoría | Specific Options | Parámetros clave |
| Rough Machining Tools | Φ8mm flat-bottom cutter (ABS/PC), Φ10mm flat-bottom cutter (aleación de aluminio) | ABS/PC: 6000rpm, 300Velocidad de alimentación mm/min, 0.5mm cutting depth; Aleación de aluminio: 10000rpm, 400Velocidad de alimentación mm/min, 0.8mm cutting depth. |
| Finishing Tools | Φ1.5mm ball-nose cutter (for arcs/chamfers), Φ3mm drill bit (for button holes) | Acabado superficial: Ra1.6-Ra3.2 (aleación de aluminio), Ra3.2 (ABS/PC); Chamfer size: C0.3-C0.5mm. |
| Special Tools | M10×1 tap (brush head interface), laser engraver (button logos), thread mill (internal threads) | Thread accuracy: 6H; Engraving depth: 0.2-0.3milímetros (logo clarity); Thread depth: 5-8milímetros. |
2.2 Programming and Fixture Design
Scientific programming and stable fixtures prevent machining errors.
| Link | Operaciones clave | Objetivo & Efecto |
| Programación de cámaras | – Sub-zone machining: First process housing outer shape, then internal motor slot/ battery compartment;- Layered cutting: Roughing removes 90% exceso de material, finishing focuses on brush head interface and sealing grooves;- Reserve 0.1mm shrinkage for ABS/PC (cools and shrinks 0.2%-0.3%). | Avoid component interference; Ensure coaxiality of motor and brush head (≤0.05mm); Prevent waterproof groove deformation. |
| Fixture Design | – ABS/PC: Use vacuum adsorption platform (even pressure, Sin deformación);- Aleación de aluminio: Use precision vise with soft jaws (prevent scratches);- Long-axis parts (grip area): Add auxiliary supports (avoid machining vibration). | Maintain workpiece stability; Ensure dimensional accuracy (no deviation >0.03milímetros); Protect surface finish. |
3. Core CNC Machining Process for Electric Face Wash Prototypes
The formal Proceso de mecanizado CNC transforms design models into physical parts, with strict control over each step to ensure functionality and safety.
3.1 Housing Machining
Housing machining differs by material to balance precision and performance:
| Material | Roughing Steps | Finishing Steps |
| ABS/PC Alloy | 1. Mill outer grip shape (curva ergonómica, diameter 35mm);2. Drill button holes (Φ6mm) and charging port cutout (USB-C size);3. Mill battery compartment (size matches battery, depth 20mm). | 1. Etch non-slip texture (grip area, Ra3.2);2. Machine waterproof sealing grooves (width 2mm, depth 1mm);3. Tap brush head interface (M10×1, depth 6mm). |
| Aleación de aluminio | 1. Mill outer shape (polished later, diameter 38mm);2. Drill motor mounting holes (Φ20mm, coaxial with brush head);3. Mill circuit board cavity (depth 10mm). | 1. Polish surface (Ra1.6, smooth touch);2. Chaflanar todos los bordes (C0.5mm, avoid scratches);3. Machine internal threads for battery cover (M8×1). |
3.2 Key Component Machining
Key components directly affect the prototype’s functionality:
- Soporte del motor: Mill aluminum alloy bracket (thickness 3mm) with motor fixing holes (Φ20mm, tolerancia ± 0.02 mm); Ensure bracket is perpendicular to housing (90°±0.1°) to avoid motor eccentricity.
- Brush Head Interface: Tap M10×1 thread on housing top; Use thread gauge to verify accuracy (no cross-threading); Machine 定位 boss (height 2mm) to align brush head.
- Waterproof Grooves: Mill U-shaped grooves (width 2mm, depth 1mm) at upper/lower shell joints; Ensure groove uniformity (no depth deviation >0.05mm) for silicone ring fit.
3.3 Special Process Treatment
Special processes enhance functionality and aesthetics:
- Thread Sealing: Apply thread sealant to brush head interface (M10×1) to improve waterproof performance (IPX7 compliance).
- Logo Engraving: Use laser engraving to add power/gear logos (P.EJ., “Fuerza”, “Low/High”) on button surfaces; Ensure engraving is clear (visible under water).
- Edge Smoothing: Usar 400-600 mesh sandpaper to smooth sharp edges (especially grip area) to prevent skin scratches during use.
4. Post-Processing and Assembly of Electric Face Wash Prototypes
Post-processing improves durability and appearance, while precise assembly ensures safety and functionality.
4.1 Tratamiento superficial
Different materials require targeted treatment:
| Material | Método de tratamiento de superficie | Objetivo & Efecto |
| ABS/PC Housing | UV Paint Spraying + Grabado con láser | UV paint improves scratch resistance (no scratches after 500 Usar pruebas); Laser engraving creates translucent buttons (for LED indicator). |
| Aluminum Alloy Housing | Anodización (black/white) + Pulido | Anodization enhances corrosion resistance (salt spray test ≥72 hours); Polishing achieves mirror-like finish (Ra1.6). |
| Silicone Brush Head | Vulcanization (secondary) + Pore Opening | Vulcanization ensures softness (Shore hardness 30-40A); Pore opening (0.5-1milímetros) improves dirt-removing ability. |
4.2 Assembly and Functional Testing
Scientific assembly and strict testing ensure the prototype meets safety standards.
4.2.1 Assembly Process
Follow this sequence to avoid errors:
- Comprobación previa al montaje: Inspect all parts for defects (Sin rasguños, dimensional deviation ≤0.05mm); Test-fit motor in bracket (sin holgura) and brush head on interface (smooth threading).
- Component Installation:
- Fix motor to bracket (M2 screws, torque 1N·m); Connect motor wires to circuit board (solder joints firm, no short circuits).
- Install battery in compartment (add foam pad to prevent movement); Fix circuit board with M1.6 screws (avoid wire compression).
- Assemble housing: Embed silicone ring in waterproof grooves; Fasten upper/lower shells with M3 screws (torque 1.2N·m, incluso fuerza); Attach silicone brush head (thread until tight).
- Final Check: Ensure no loose parts; Verify button movement (liso, no stuck); Check LED indicator alignment (matches button holes).
4.2.2 Prueba funcional
Conduct comprehensive tests to validate performance:
- Safety Tests:
- Waterproof Test: IPX7 immersion test (1m water depth, 30 minutos, no water ingress);
- Insulation Test: Check housing for electric leakage (resistance ≥100MΩ);
- Overload Protection: Simulate motor overload (120% rated current), verify auto-stop (response time ≤5s).
- Performance Tests:
- Vibration Frequency: Measure at different gears (Bajo: 8000 Rpm, Alto: 12000 Rpm, error ≤5%);
- Battery Life: Test continuous use at High gear (≥40 minutes);
- Brush Head Durability: Simulate face washing (100 ciclos, no bristle deformation).
- User Experience Tests:
- Grip Comfort: Test single-hand hold (no fatigue after 5 minutos);
- Noise Level: Measure at max RPM (≤55 dB, no abnormal noise).
5. Application Scenarios of CNC Machined Electric Face Wash Prototypes
CNC machined electric face wash prototypes serve multiple purposes in product development and market promotion:
| Escenario de aplicación | Specific Uses | Advantage of CNC Machining |
| Product Design Verification | Test vibration stability, waterproof performance, and ergonomics; Optimize brush head interface (P.EJ., adjust thread depth for easier installation). | Alta precisión (± 0.05 mm) ensures accurate simulation of mass production models; Supports rapid iteration (modify 3D models, re-machine in 2-3 días). |
| Market Research | Display at beauty exhibitions; Collect user feedback on grip comfort, vibration intensity, and brush head softness; Adjust mass production plans. | Prototype appearance and functionality match final products; Attracts user attention (high-quality surface treatment). |
| Small-Batch Customization | High-end beauty brands (custom colors/logos), medical skincare (hypoallergenic brush heads); Produce ≤50 units without opening molds. | Flexible (adapt to custom designs quickly); Rentable (no mold fees, lower than injection molding for small batches). |
| Educational Training | Disassemble to demonstrate motor transmission, waterproof design, and vibration control; Suitable for mechanical engineering or beauty technology teaching. | Clear internal structure (easy to observe components); Seguro (meets insulation standards, no electric shock risk). |
6. Key Precautions for CNC Machining Electric Face Wash Prototypes
To ensure quality and safety, observe these precautions:
- Safety Priority: Ensure IPX7 waterproof (sealing groove precision ±0.05mm); Isolate motor from water (use waterproof gaskets) to prevent short circuits.
- Control de precisión: Maintain coaxiality of motor and brush head (≤0.05mm) to avoid vibration noise; Ensure thread accuracy of brush head interface (6H) for easy assembly.
- Optimización de costos: CNC machining is ideal for ≤100 units; Para la producción en masa (>1000 units), switch to injection molding (ABS/PC housing) + moldura de silicona (brush head) to reduce cost by 50-60%. Simplify complex grip curves to reduce tool wear.
- Material Care: ABS/PC is prone to moisture absorption—dry before machining to avoid bubbles; Aluminum alloy is prone to deformation—control cutting temperature (use cutting fluid) y fuerza de sujeción.
Yigu Technology’s Viewpoint
En la tecnología yigu, creemos CNC machining is the core to developing safe and user-friendly electric face wash prototypes. It enables precise control of critical structures (P.EJ., ±0.05mm motor-brush coaxiality, IPX7 waterproof grooves) and supports rapid iteration—critical for face wash products where safety (impermeable, aislamiento) and user experience (ergonomics, vibration comfort) are paramount. When producing these prototypes, we focus on two core aspects: material-safety matching (ABS/PC for waterproof housing, medical silicone for skin-friendly brush heads) y optimización de procesos (vacuum adsorption for thin-walled parts, layered cutting for thread precision). By integrating strict quality control from design to testing, we help clients shorten development cycles by 20-25% and mitigate mass production risks. Mirando hacia adelante, we will apply AI-driven parameter optimization to CNC machining, further improving efficiency while maintaining ±0.03mm precision for more reliable face wash prototypes.
Preguntas frecuentes
- What materials are best for CNC machined electric face wash prototype housings, y por qué?
The best materials are ABS/PC alloy and aluminum alloy 6061. ABS/PC alloy offers excellent waterproof performance (IPX7 compliance) y resistencia al impacto (no cracks from 1m drops), while aluminum alloy 6061 es liviano (≤150g) and easy to polish (smooth grip). Both are easy to machine, ensuring precise internal structures for motors and brush heads.
- Can CNC machined electric face wash prototypes be used directly for mass production?
No. CNC prototypes are for design verification, market research, and small-batch customization (≤100 units). Para la producción en masa (>1000 unidades), moldura de inyección (ABS/PC housing) + moldura de silicona (brush head) is better—it reduces per-unit cost by 50-60% and increases production speed. CNC prototypes provide data to optimize injection molds (P.EJ., adjust shrinkage for ABS/PC).
- How long does it take to produce a CNC machined electric face wash prototype?
The cycle depends on complexity. Un prototipo simple (ABS/PC housing, basic vibration function) acepta 6-8 días: 1-2 days for design, 2-3 days for CNC machining, 1-2 Días para el postprocesamiento, y 1 day for assembly/testing. Un prototipo complejo (aluminum alloy housing, multi-gear vibration, IPX7) acepta 9-12 días (more intricate machining and waterproof testing).