What is Fine Machining?
Fine machining involves precision cutting, grinding, lapping, and polishing to achieve micron or even nanometer-level accuracy, ensuring part performance and long service life.
Why Fine Machining ?
High Precision: Achieve tolerances up to ±0.001 mm.
Surface Quality: Surface roughness as low as Ra0.2 μm.
Durability: Reduced friction and extended service life.
Aesthetic Appeal: Smooth, mirror-like finish.
Performance Enhancement: Improved sealing, conductivity, and fitting accuracy.
Fine Machining Performance Parameters
| Parameter | Typical Range | Description |
|---|---|---|
| Dimensional Tolerance | ±0.001 ~ ±0.005 mm | Meets high-precision assembly requirements |
| Surface Roughness | Ra 0.2 ~ Ra 0.8 μm | Ideal for optical, medical, precision parts |
| Roundness/Flatness | ≤ 0.002 mm | Ensures precise fitting |
| Mirror Polishing | Ra ≤ 0.05 μm | Suitable for molds, optical, decorative parts |
| Processes | CNC milling, precision grinding, lapping, polishing, EDM finishing | Multi-process combinations |
Detail of Fine Machined Parts
Materials Suitable for Fine Machining
| Material Category | Specific Grades |
|---|---|
| Aluminum Alloys | 6061, 6082, 7075, 2024 |
| Stainless Steel | 304, 316, 316L, 17-4PH |
| Steels | S45C, SKD11, H13, P20 |
| Copper Alloys | C11000, C36000, CuZn35 |
| Titanium Alloys | Ti-6Al-4V (Grade 5), Grade 2 |
| Engineering Plastics | PEEK, PC, ABS, PMMA, PTFE |
Applications of Fine Machined Parts
Aerospace: Engine components, precision connectors
Medical Devices: Surgical tools, orthopedic implants, dental parts
Automotive: Engine components, fuel nozzles, transmission parts
Electronics & Optics: Optical lenses, housings, semiconductor parts
Mold Making: Precision molds, optical cavities
