Precision CNC Machining at PuKong Prototype: Capabilities and Advantages

Introduction

At PuKong Prototype, we pride ourselves on delivering high-precision CNC machined components in a fast turnaround that meet the strictest industry standards. With expertise in aerospace, automotive, medical, and electronics manufacturing, we utilize advanced CNC machining technologies to produce complex, high-tolerance parts with exceptional accuracy and repeatability.

This article explores the different CNC machining processes we employ, highlighting their precision levels, material compatibility, and key advantages to help clients select the optimal manufacturing solution for their projects.

1. CNC Milling – High-Accuracy Multi-Axis Machining

Overview

CNC milling is a versatile subtractive manufacturing process that uses rotating cutting tools to remove material from a workpiece. Our facilities are equipped with 3-axis, 4-axis, and 5-axis CNC milling machines, enabling us to machine complex geometries with tight tolerances (±0.01mm or better).

Key Advantages

✔ 5-axis capability for intricate contours and undercuts
✔ Superior surface finishes (Ra 0.4µm achievable)
✔ Wide material range (aluminum, stainless steel, titanium, plastics)

Precision & Applications

• Aerospace: Turbine blades, structural components (±0.005mm)

• Medical: Orthopedic implants, surgical instruments (±0.01mm)

• Automotive: Engine blocks, transmission housings (±0.02mm)

2. CNC Turning – Precision for Rotational Symmetry Parts

Overview

CNC turning (lathe machining) is ideal for cylindrical or conical parts. Our Swiss-type lathes and multi-axis turning centers ensure high concentricity (±0.005mm) and excellent surface quality.

Key Advantages

✔ Live tooling for milling & drilling in a single setup
✔ High-speed machining for rapid production
✔ Exceptional roundness & diameter control

Precision & Applications

• Hydraulic systems: Precision shafts (±0.005mm)

• Electronics: Connector pins, threaded fittings (±0.01mm)

• Defense: Gun barrels, munition components (±0.02mm)

3. CNC Grinding – Ultra-Fine Tolerances & Surface Finishes

Overview

For micron-level precision, CNC grinding uses abrasive wheels to achieve tolerances as tight as ±0.001mm and mirror-like finishes (Ra 0.1µm).

Key Advantages

✔ Hard material machining (hardened steel, ceramics)
✔ No heat-affected zones (HAZ)
✔ Superior dimensional stability

Precision & Applications

• Tool & Die: Injection molds (±0.002mm)

• Medical: Dental implants, surgical blades (±0.001mm)

• Optics: Lens molds, prismatic components (±0.0005mm)

4. CNC EDM – Precision Machining for Hardened Metals

Overview

Electrical Discharge Machining (EDM) uses controlled electrical sparks to erode material, making it ideal for hard metals (HRC 60+) and intricate shapes.

Types & Advantages

✔ Wire EDM: Cuts complex profiles (±0.005mm, Ra 0.8µm)
✔ Sinker EDM: Creates deep cavities & fine details (±0.01mm)

Precision & Applications

• Aerospace: Turbine blades, fuel nozzles (±0.005mm)

• Mold Making: Injection molds (±0.01mm)

• Automotive: Gear teeth, fuel injectors (±0.008mm)

5. CNC Laser Cutting – High-Speed Precision Cutting

Overview

Our fiber laser cutters deliver clean, burr-free cuts with ±0.05mm accuracy on sheet metal up to 25mm thick.

Key Advantages

✔ No tool wear, minimal kerf (0.1mm)
✔ Suitable for reflective metals (copper, brass)
✔ High repeatability (±0.03mm batch consistency)

Precision & Applications

• Electronics: Enclosures, heat sinks (±0.05mm)

• Automotive: Chassis components (±0.1mm)

• Medical: Stainless steel surgical tools (±0.03mm)

6. CNC Water Jet Cutting – No Thermal Distortion

Overview

Water jet cutting uses high-pressure water (up to 60,000 psi) mixed with abrasives to cut any material without heat, ensuring ±0.1mm accuracy.

Key Advantages

✔ No HAZ, no material warping
✔ Cuts composites, stone, glass, and metals
✔ Environmentally friendly (no fumes)

Precision & Applications

• Aerospace: Carbon fiber panels (±0.15mm)

• Architecture: Marble & granite (±0.2mm)

• Automotive: Gaskets, interior trim (±0.1mm)

7. CNC Plasma Cutting – Cost-Effective for Thick Metals

Overview

For fast, economical cutting of thick metals (up to 50mm), CNC plasma achieves ±0.5mm precision.

Key Advantages

✔ 10x faster than laser for thick plates
✔ Lower operational cost
✔ Suitable for structural steel, aluminum

Precision & Applications

• Heavy machinery: Frames, brackets (±0.5mm)

• Shipbuilding: Hull plates (±0.8mm)

• Construction: Steel beams (±1mm)

Why Choose PuKong Prototype for CNC Machining Services?

✅ Industry-Leading Precision (ISO 9001-certified)
✅ Advanced Machines (DMG Mori, Haas, Mazak, Trumpf)
✅ Material Expertise (aerospace alloys, medical-grade metals, engineering plastics)
✅ Full-Service Support (DFM analysis, post-processing, quality inspection)