1. Pre-CNC Machining: Design and Preparation for Electric Face Wash Prototypes
Before initiating Usinagem CNC for the electric face wash prototype, a systematic design and preparation stage is critical to meet functional, segurança, and user experience requirements. This stage follows a linear sequence, with key details organized in the table below.
| Design Step | Requisitos -chave | Recommended Materials |
| 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); Aparência: Ergonomic grip (fits palm, diameter 30-40mm), tamanho compacto (length 150-180mm); Reserve space for motor, battery compartment, USB-C charging port, and power/gear buttons. | – |
| Projeto estrutural | Estrutura 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 Modelagem & Simulação | Use o software CAD (SolidWorks, E 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). | – |
| Seleção de material | Prioritize water resistance, durabilidade, and skin-friendly properties, while matching mass production standards. | Housing: ABS/PC alloy (impermeável, resistente ao impacto, wall thickness 1.5-2mm) or aluminum alloy 6061 (leve, fácil de polir); Brush Head: Silicone de nível médico (macio, não irrital, pore size 0.5-1mm); Internal Support: PA66 nylon (insulated, resistente ao desgaste) or aluminum alloy (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 remover a umidade (prevents machining bubbles); Anneal aluminum alloy (300-350° C para 1-2 horas) Para reduzir o estresse interno. | – |
2. CNC Machining Preparation for Electric Face Wash Prototypes
Adequate preparation before machining ensures efficiency and precision in Usinagem CNC for face wash prototypes. This section covers tool selection, programação, 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:
| Categoria | Specific Options | Parâmetros -chave |
| Rough Machining Tools | Φ8mm flat-bottom cutter (ABS/PC), Φ10mm flat-bottom cutter (liga de alumínio) | ABS/PC: 6000RPM, 300Taxa de alimentação mm/min, 0.5mm cutting depth; Liga de alumínio: 10000RPM, 400Taxa de alimentação mm/min, 0.8mm cutting depth. |
| Finishing Tools | Φ1.5mm ball-nose cutter (for arcs/chamfers), Φ3mm drill bit (for button holes) | Acabamento superficial: Ra1.6-Ra3.2 (liga de alumínio), 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 | Operações-chave | Propósito & Efeito |
| Programação de came | – Sub-zone machining: First process housing outer shape, then internal motor slot/ battery compartment;- Layered cutting: Roughing removes 90% excesso 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. |
| Projeto de luminária | – ABS/PC: Use vacuum adsorption platform (even pressure, sem deformação);- Liga de alumínio: 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 CNC machining process 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 ergonômica, 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). |
| Liga de alumínio | 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. Chamfer all edges (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:
- Motor Bracket: Mill aluminum alloy bracket (thickness 3mm) with motor fixing holes (Φ20mm, tolerância ± 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 (Por exemplo, “Poder”, “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 Tratamento de superfície
Different materials require targeted treatment:
| Material | Método de tratamento de superfície | Propósito & Efeito |
| ABS/PC Housing | UV Paint Spraying + Gravura a laser | UV paint improves scratch resistance (no scratches after 500 Testes de desgaste); Laser engraving creates translucent buttons (for LED indicator). |
| Aluminum Alloy Housing | Anodization (black/white) + Polimento | 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 Processo de montagem
Follow this sequence to avoid errors:
- Verificação pré-montagem: Inspect all parts for defects (Sem arranhões, dimensional deviation ≤0.05mm); Test-fit motor in bracket (no looseness) and brush head on interface (smooth threading).
- Instalação de componentes:
- 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, even force); Attach silicone brush head (thread until tight).
- Final Check: Ensure no loose parts; Verify button movement (suave, no stuck); Check LED indicator alignment (matches button holes).
4.2.2 Teste funcional
Conduct comprehensive tests to validate performance:
- Safety Tests:
- Teste à prova d'água: 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 (Baixo: 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:
| Application Scenario | Specific Uses | Advantage of CNC Machining |
| Product Design Verification | Test vibration stability, waterproof performance, and ergonomics; Optimize brush head interface (Por exemplo, adjust thread depth for easier installation). | Alta precisão (± 0,05 mm) ensures accurate simulation of mass production models; Supports rapid iteration (modify 3D models, re-machine in 2-3 dias). |
| 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. | Flexível (adapt to custom designs quickly); Econômico (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) para evitar curto-circuitos.
- Controle de precisão: Maintain coaxiality of motor and brush head (≤0.05mm) to avoid vibration noise; Ensure thread accuracy of brush head interface (6H) for easy assembly.
- Otimização de custos: CNC machining is ideal for ≤100 units; Para produção em massa (>1000 units), switch to injection molding (ABS/PC housing) + moldagem por silicone (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) and clamping force.
Yigu Technology’s Viewpoint
Na tecnologia Yigu, acreditamos CNC machining is the core to developing safe and user-friendly electric face wash prototypes. It enables precise control of critical structures (Por exemplo, ±0.05mm motor-brush coaxiality, IPX7 waterproof grooves) and supports rapid iteration—critical for face wash products where safety (impermeável, isolamento) 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) e otimização do processo (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. Olhando para frente, we will apply AI-driven parameter optimization to CNC machining, further improving efficiency while maintaining ±0.03mm precision for more reliable face wash prototypes.
Perguntas frequentes
- What materials are best for CNC machined electric face wash prototype housings, e por quê?
The best materials are ABS/PC alloy and aluminum alloy 6061. ABS/PC alloy offers excellent waterproof performance (IPX7 compliance) e resistência ao impacto (no cracks from 1m drops), while aluminum alloy 6061 é leve (≤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?
Não. CNC prototypes are for design verification, market research, and small-batch customization (≤100 units). Para produção em massa (>1000 unidades), moldagem por injeção (ABS/PC housing) + moldagem por silicone (brush head) is better—it reduces per-unit cost by 50-60% and increases production speed. CNC prototypes provide data to optimize injection molds (Por exemplo, adjust shrinkage for ABS/PC).
- How long does it take to produce a CNC machined electric face wash prototype?
The cycle depends on complexity. Um protótipo simples (ABS/PC housing, basic vibration function) leva 6-8 dias: 1-2 days for design, 2-3 days for CNC machining, 1-2 dias para pós-processamento, e 1 day for assembly/testing. Um protótipo complexo (aluminum alloy housing, multi-gear vibration, IPX7) leva 9-12 dias (more intricate machining and waterproof testing).