What Is CNC Machining Process for a Juicer Prototype Model? Una guida passo-passo

Developing a juicer prototype model requires a precise CNC machining process to validate design rationality, test component fit (PER ESEMPIO., blade assembly, juice flow paths), and evaluate user-centric details (PER ESEMPIO., non-slip base, button layout). Unlike large appliances, juicers have compact, multi-functional structures—from transparent juice cups to wear-resistant transmission parts—that demand tailored machining strategies. This guide breaks down the full workflow, from preliminary design to final assembly, with key parameters, selezioni dei materiali, e consigli pratici per garantire il successo del prototipo.

1. Preparazione preliminare: Gettare le basi per la lavorazione

The success of CNC machining starts with thorough preparation, including 3D modeling, Selezione del materiale, and equipment/tool readiness. This stage ensures the subsequent process avoids rework and meets design goals.

(1) 3D Modellazione: Define Juicer Structure with Precision

Usa il software CAD professionale (PER ESEMPIO., Solidworks, E, ProE) to create a detailed 3D model that covers all critical components. The model must balance aesthetic design, functional logic, and machining feasibility.

Suggerimenti per l'ottimizzazione del modello:

• Component Splitting: Split integrated structures (PER ESEMPIO., cup body + coperchio) into independent parts to avoid tool interference. Per esempio, machine the juice cup and its lid separately, then assemble with a sealing ring.
• Process Marking: Label critical features (PER ESEMPIO., “polish inner wall of juice cup”) and reference datums (PER ESEMPIO., base bottom as origin) to guide CNC programming.
• Interference Check: Use software to simulate blade rotation and juice flow—ensure 0.5mm clearance between blade and cup wall to prevent friction.

(2) Selezione del materiale: Abbina le prestazioni ai ruoli dei componenti

Juicer components have distinct functional needs (trasparenza, resistenza all'usura, forza), so material selection is critical. Below is a detailed comparison of suitable options:

Preparazione del materiale grezzo:

• Cut blanks with 5–10mm machining allowance on all sides to accommodate roughing and finishing:
• A PC juice cup (Dimensione finale: Φ80mm×120mm) needs a Φ90mm×130mm blank.
• An ABS main shell (200mm×150mm×80mm) requires a 210mm×160mm×90mm blank.

(3) Attrezzatura & Preparazione degli strumenti: Garantire la precisione della lavorazione

Select CNC equipment and tools based on component complexity and material properties to avoid defects like tool marks or dimensional deviations.

2. Esecuzione di lavorazione a CNC: From Blank to Prototype Components

This stage divides machining into roughing and finishing to balance efficiency and precision—critical for juicer components with diverse structures.

(1) Macchinatura ruvida: Shape the Foundation

Roughing removes most excess material to bring the blank close to the final shape, prioritizing speed while avoiding tool damage.

Post-Roughing Inspection:

• Use a digital caliper to check key dimensions (PER ESEMPIO., juice cup diameter, shell height) and ensure they are within ±0.5mm of the design value.
• Clean chips with compressed air—especially critical for PC parts (chips left on surfaces cause scratches during finishing).

(2) Finitura: Ottieni precisione & Qualità della superficie

Finishing refines components to meet final design requirements, focusing on transparency (PC), smoothness (Addominali), precisione dimensionale (POM/aluminum).

Finishing Quality Checks:

• For PC parts: Use a spectrophotometer to verify transparency (≥85%) and a surface roughness tester to confirm Ra ≤0.4μm.
• For POM gear cavities: Use a feeler gauge to check clearance (0.1mm) and ensure gears rotate smoothly without jamming.

3. Post-elaborazione: Migliora l'estetica & Funzionalità

Post-processing bridges the gap between machined components and a realistic juicer prototype, focusing on surface refinement and assembly readiness.

(1) Trattamento superficiale: Sarto al materiale & Component Role

(2) Assemblaggio & Functional Debugging

Proper assembly ensures components work together seamlessly, while functional tests validate the prototype’s usability.

Passi di montaggio:

1. Pre-Assembly Check: Verify all parts meet dimensional requirements (PER ESEMPIO., juice cup fits shell with 0.5mm clearance).
2. Component Fixing:

• Bond PC juice cup to ABS shell with food-grade adhesive (ensure no leakage).
• Screw aluminum motor brackets to the base (coppia 5 N · m, avoid thread damage).
• Install POM gears and 3D-printed resin simulation blades (replace real metal blades for safety).

3. Prova di tenuta: Pour 200mL water into the juice cup—check for leakage at connections (no water seepage within 10 minuti).

Functional Debugging:

• Button Operation: Test switch/pulse buttons 100 times—stroke 2mm ±0.2mm, feedback force 5–8N (comfortable for users).
• Blade Rotation: Simulate juicing with a motor (500 RPM)—ensure blade rotates smoothly, no friction with cup wall.
• Juice Flow: Pour water through the feeding port—check flow rate (≥50mL/min) and no residue in the cup.

4. Controllo di qualità & Ottimizzazione del processo

Strict quality control ensures the prototype meets design standards, while optimization reduces costs for future iterations.

(1) Key Quality Control Standards

(2) Process Optimization Tips

1. Material Saving: Design hollow structures for ABS parts (PER ESEMPIO., base with 3mm thick walls) to reduce blank size—saves 20–30% material cost.
2. Efficienza di lavorazione: Combine roughing and semi-finishing for simple parts (PER ESEMPIO., decorative strips) to cut tool change time by 15%.
3. Post-Processing Simplification: Per parti nascoste (PER ESEMPIO., motor brackets), skip anodizing—use natural aluminum finish to save 10–15% of treatment cost.

Yigu Technology’s Perspective on CNC Machining Juicer Prototype Models

Alla tecnologia Yigu, Crediamo functional precision and user experience are the core of juicer prototype machining. Many clients overcomplicate processes—for example, using 5-axis machines for flat ABS shells when 3-axis works, or over-polishing hidden POM parts. Our team optimizes for both quality and cost: We use PC with diamond polishing for juice cups (ensuring transparency ≥85%) and 3-axis machines for most components to cut 20% of machining time. We also simplify blade simulation (3D-printed resin instead of metal) for safety and cost. For batch prototypes, we use multi-cavity fixtures to machine 2–3 juice cups at once, Ridurre i tempi di produzione di 30%. Our goal is to deliver prototypes that validate design and user needs at the lowest cost.

Domande frequenti

1. Why is PC plastic preferred for juicer juice cups instead of acrylic?

PC plastic has higher impact resistance (10x più forte del vetro) and better temperature stability (heat-resistant up to 135°C) than acrylic—critical for juice cups that may encounter accidental drops or warm liquids. Acrylic is prone to cracking and yellowing under heat, making it unsuitable for long-term juicer use.

2. How to prevent POM parts from melting during CNC machining?

POM melts at 160°C, so we control temperature by: 1) Using low cutting speeds (8,000–10,000 rpm) to reduce friction heat; 2) Blowing compressed air continuously to cool the workpiece; 3) Avoiding deep cuts (layer depth ≤2mm) to minimize heat accumulation. These steps keep POM temperature below 120°C during machining.

3. What is the total time required to machine a single juicer prototype?

Total time is ~4–6 days: 1 day for 3D modeling/material prep, 1–2 giorni per lavorazione CNC (ruvido + finitura), 1 giorno per post-elaborazione (polishing/painting), and 1–2 days for assembly/debugging. Produzione in lotti (10+ prototipi) can be shortened to 3–4 days with parallel processing.