Precision Structural & Functional Prototypes for Engineering Verification
Before moving to mass production, validating the mechanical performance of your design is non-negotiable. Structural and Functional Prototypes are built to undergo rigorous testing—checking for fit, assembly tolerances, load-bearing capacity, and environmental resistance. Unlike visual models, these prototypes must perform exactly like the final product.
At JUCHENG, we specialize in "Works-Like" prototypes. We utilize precision CNC Machining to cut real engineering plastics and metals, along with industrial SLS/MJF 3D Printing for complex nylon structures. Our engineering team ensures that every snap-fit clicks, every gear meshes, and every enclosure seals perfectly. We deliver robust prototypes that allow you to identify design flaws early, mitigate risks, and accelerate your time-to-market.
At JUCHENG, we specialize in "Works-Like" prototypes. We utilize precision CNC Machining to cut real engineering plastics and metals, along with industrial SLS/MJF 3D Printing for complex nylon structures. Our engineering team ensures that every snap-fit clicks, every gear meshes, and every enclosure seals perfectly. We deliver robust prototypes that allow you to identify design flaws early, mitigate risks, and accelerate your time-to-market.
Structural and Functional Prototype
JUCHENG’s Engineering Prototyping Capabilities
We focus on dimensional accuracy and material authenticity to ensure valid test results:
- Real Material Machining: We machine prototypes from the exact stock material specified for production (e.g., PEEK, Delrin, Aluminum 7075), ensuring the test data correlates 100% with the final part.
- Tight Tolerance Assembly: We achieve tolerances as tight as +/- 0.01mm for CNC parts, ensuring precise fit-checks for multi-part assemblies and complex mechanisms.
- Functional Features: We specialize in machining functional details like live hinges, snap-fits, fine threads, and O-ring grooves that require high precision.
- Durability & Strength: Through SLS (Selective Laser Sintering) and MJF, we produce isotropic nylon parts that withstand functional snap-fit testing and drop testing without breaking.
- Thread Integration: We install high-quality threaded inserts (Helicoils, PEM nuts) to ensure prototypes can be assembled and disassembled repeatedly during the testing phase.
Categorías de galería de productos
Snap-Fits & Clips Testing
Load-Bearing Structural Parts
Moving Mechanisms & Gears
High-Temp & Chemical Resistance
Waterproof & Sealing Enclosures
Materials Available
Engineering Materials for Functional Testing
For functional prototypes, material properties are critical. We select materials based on the specific mechanical or thermal tests required:
For functional prototypes, material properties are critical. We select materials based on the specific mechanical or thermal tests required:
| Material Category | Specific Materials | Functional Properties & Applications |
| Engineering Plastics (CNC) | POM (Delrin), Nylon (PA6/66) | Wear Resistance & Friction: Ideal for gears, sliding mechanisms, bushings, and snap-fits. |
| High-Performance Plastics (CNC) | PEEK, PPS, PTFE (Teflon) | Extreme Environments: For testing in high temperatures (>200°C), chemical exposure, or high-stress loads. |
| Structural Metals (CNC) | Aluminum 6061/7075, Stainless Steel | Load Bearing: For structural frames, chassis, and brackets requiring high strength-to-weight ratios. |
| 3D Printing Powders | Nylon 12 (SLS/MJF), Glass-Filled Nylon | Complex Geometry: For air ducts, durable housings, and functional clips that cannot be machined easily. |
| Elastomers (Vacuum Casting) | PU Rubber (Shore 40A-90A) | Sealing & Gaskets: Simulating rubber seals, buttons, and overmolded grips for ergonomic testing. |
Comparison
Comparison: CNC vs. SLS/MJF for Functional Prototypes
Selecting the right process depends on the specific function you need to test.
Selecting the right process depends on the specific function you need to test.
| Feature | Mecanizado CNC | SLS / MJF 3D Printing | SLA 3D Printing |
| Material Authenticity | High (Real Block Material) | Medium (Powder Sintered) | Low (Resin Simulants) |
| Strength & Durability | Highest (Isotropic) | High (Near Isotropic) | Low (Brittle) |
| Accuracy | High (+/- 0.01mm) | Medium (+/- 0.2mm) | High (+/- 0.1mm) |
| Snap-Fit Performance | Excellent (POM/PP) | Excellent (Nylon) | Poor (Snaps easily) |
| Cost | Higher | Lower | Medium |
| Best For | Final material verification, high precision | Complex shapes, ducting, tough housings | Visual check only |
Por qué elegirnos
Why Choose JUCHENG for Engineering Verification?
- DFM Support: Our engineers review your CAD files not just for printability, but for functionality. We suggest modifications to improve wall thickness, draft angles, and tolerance stacks.
- Material Certification: We provide material datasheets and CoC (Certificate of Conformity) to prove that the material we machined is the exact grade you specified.
- Precision Metrology: We utilize in-house CMM (Coordinate Measuring Machines) and laser scanners to verify that critical dimensions on your prototype meet the design tolerances.
- Fast Iteration: If a test fails, we can rapidly machine a modified version and ship it within days, keeping your development timeline on track.
Advantages
Key Advantages of Functional Prototyping
- Risk Mitigation: Identify and fix design flaws (interferences, weak points) before cutting expensive steel molds.
- Performance Verification: Physically test thermal management, airflow, water resistance, and structural integrity.
- Assembly Validation: Ensure all internal components (PCBs, batteries, motors) fit perfectly within the enclosure.
- Certification Testing: Produce production-grade units for early UL, CE, or FCC certification testing.
Industries Served
Industries & Applications
- Automotriz: Air intake manifolds, door handle mechanisms, suspension brackets, fluid reservoirs.
- Robotics: Custom gears, robot arms, end-effectors, structural chassis.
- Dispositivos médicos: Functional surgical tools, MRI component housings, fluid management systems.
- Industrial Equipment: Jigs and fixtures, heavy-duty valve bodies, wear-resistant machine parts.
Solicite su DFM y cotización – Cargue sus dibujos
ㆍComplete sus requisitos y cargue su archivo 2D y 3D, le enviaremos su cotización del proyecto y DFM en un plazo de 24 horas.ㆍTipos de archivo: STEP, STP, IGES, IGS, SLDPRT, 3DM, SAT o X_T Tamaño del archivo: < 128 MB Tamaño de la pieza: < 1500*1500*1500 mm
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ㆍPrivacidad: Respetamos su privacidad. Aquí puede encontrar un ejemplo de un acuerdo de confidencialidad. Al enviar este formulario, acepta nuestros términos y condiciones y política de privacidad.
