As a professional CNC machining service provider, AOOM Technology (www.aoomtech.com) frequently receives inquiries about the precision capabilities of CNC 3-axis machining. This article will provide technical insights into achievable tolerances, influencing factors, and how we optimize precision for different applications.

Standard Precision Range of 3-Axis CNC Machining

Typical CNC 3-axis machining can achieve dimensional tolerances of ±.005 inches (±.127mm) for most metals and ±.002 inches (±.05mm) for plastics under normal conditions. Surface finishes typically range between 32-125 μin Ra (.8-3.2 μm Ra) without secondary operations.

Key Factors Affecting Machining Accuracy

Several technical elements influence the final precision: machine tool rigidity (especially important for our German-made DMG Mori equipment), cutting tool condition, workpiece material properties, thermal stability in our climate-controlled workshop, and programming techniques using Mastercam software.

Pushing Precision Limits with Advanced Techniques

Through our proprietary process optimization, AOOM Technology can achieve exceptional tolerances down to ±.001 inches (±.025mm) for critical dimensions when using high-precision tooling and implementing compensation strategies. Our CNC 3-axis machining services particularly excel in aerospace components and medical device applications where such precision is required.

For projects demanding tighter tolerances than standard 3-axis capabilities, we recommend exploring our 5-axis machining services which offer enhanced accuracy through reduced setups and advanced tool path control.