Service Overview
Fine machining is one of our core competencies, combining advanced CNC technology with expert craftsmanship to achieve ultra-precise dimensional control and mirror-like surface finishes.
At CMS, we provide fine machining services for prototypes, custom parts, and small to medium-scale production, ensuring each component meets strict industrial standards.
✅ Typical accuracy: ±0.005mm
✅ Surface roughness (Ra): up to 0.2μm
✅ Compatible materials: aluminum, stainless steel, brass, titanium, engineering plastics
What Is Fine Machining?
Fine machining refers to advanced cutting and finishing processes that achieve extremely tight tolerances and superior surface quality.
Unlike conventional machining, fine machining involves the use of high-precision CNC machines, diamond tools, and optimized cutting parameters to minimize tool marks and deviations.
Key techniques include:
-
Micro CNC milling and turning
-
Precision grinding and polishing
-
Ultra-fine boring and honing
-
Laser-assisted finishing
Advantages of Fine Machining
Surface Roughness Reference
| Finish Type | Process | Typical Ra (μm) | Appearance |
|---|---|---|---|
| As Machined | CNC Milling / Turning | Ra 1.6–3.2 | Fine tool marks visible, metallic shine |
| Fine Machined | Optimized feed & speed | Ra 0.8–1.6 | Smooth, semi-gloss |
| Polished | Manual or mechanical polishing | Ra ≤ 0.4 | Mirror-like reflective surface |
Materials for Fine Machining
Metals: Aluminum, Stainless Steel, Brass, Copper, Titanium, Steel
Plastics: ABS, POM, PTFE, PC, Nylon, PEEK, Ultem
We select the right cutting tools and parameters based on material properties to achieve optimal surface quality.
Applications
Our fine machining services are widely used in:
-
Aerospace and aviation components
-
Medical device parts
-
Optical and camera housings
-
Precision electronic components
-
Automotive engine and transmission parts
-
Robotics and automation systems
Tolerance & Quality Assurance
Unless otherwise specified by customer drawings, our fine machining standard tolerances are:
-
Linear dimensions: ±0.005mm
-
Hole diameter: ±0.005mm
-
Surface roughness: Ra 0.2μm
Every part is inspected using CMM (Coordinate Measuring Machines), profile projectors, and surface testers to ensure all critical dimensions meet or exceed specifications.
We are certified with ISO 9001, IATF 16949, and ISO 13485 to ensure quality consistency.
Case Studies
Frequently Questions
If you have any questions in the process of product design and manufacturing, you can contact us to obtain expert support and provide the best solution for your product. Get support now ！
