Micro Grinding

Sanluo Precision is a professional manufacturer and supplier of surface micro grinding in China, with 18 years of technical accumulation in the field of ultra-precision grinding and polishing, providing customers with high-quality customized micro CNC machining services. We offer professional customized surface micro machining services for optical components, ceramic parts, precision bearings, medical implants and other industries, supporting the customization of complex and difficult parts. We can achieve nanometer-level surface roughness and submicron-level dimensional accuracy, fully meeting the stringent requirements of high-end manufacturing for ultra-precision grinding.

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Product Description

Micro Grinding Technology

The surface micro grinding of Sanluo Precision uses extremely small abrasive grains to grind the protruding parts of the material surface to obtain an ultra-smooth surface. The abrasive grain size is W0.5-W40 with a particle size of 0.5-40μm, and the materials include alumina, silicon carbide and diamond. The grinding methods include surface grinding, cylindrical grinding, internal grinding, spherical grinding and free-form surface grinding. The grinding pressure adjustment range is 0.01-0.5MPa, low pressure will not damage the surface, and uniform pressure ensures surface consistency. The grinding speed is 10-100m/min, and the speed, pressure and abrasive grain size are used in combination. The surface roughness is Ra0.01-0.1μm, and Ra<0.01μm is called mirror finish. The flatness is 0.001mm, the parallelism is 0.002mm, and the roundness is 0.001mm.

Station Accuracy

Dimensional accuracy	OD	ID	T（C）	DP	SW
unit:±/mm	0.001	0.001	0.001	0.001	0.001
Geometric accuracy	Roundness	Coaxiality	Straightness	Cylindricity	Symmetry
unit:±/mm	0.001	0.001	0.001	0.001	0.001
Production capacity	1~999999 pcs	1~999999 pcs	1~999999 pcs	1~999999 pcs	1~999999 pcs
Production cycle	3-20 days	3-20 days	3-20 days	3-20 days	3-20 days

Ceramic Surface Grinding and Polishing Technology

Sanluo Precision's processing plant has professional ceramic micro grinding and polishing processes: ceramic materials (alumina, zirconia, silicon nitride, silicon carbide) with a hardness of HV1500-3000; rough grinding with W20/W40 abrasives to remove excess material, with a flatness of <0.01mm and a roughness of Ra0.4-0.8μm; finish grinding with W7/W14 abrasives to improve accuracy, with a flatness of 0.003mm and a roughness of Ra0.1-0.2μm; polishing with W1.5-W3.5 abrasives for mirror effect, with a flatness of 0.001mm and a roughness of Ra0.01-0.05μm; ultra-precision polishing with W0.5 abrasives or chemical mechanical polishing (CMP), with a roughness of Ra<0.01μm close to atomic-level smoothness.

Grinding Equipment Capacity

As a professional manufacturer of surface micro grinding, we are equipped with advanced equipment: surface grinding machine with a flatness of 0.0001mm and a machining thickness of 0.1-50mm; cylindrical grinding machine with a grinding diameter of φ0.5-100mm, a roundness of ≤0.001mm and a surface Ra≤0.05μm; internal grinding machine with a hole diameter of φ2-100mm and a depth-diameter ratio of ≥3:1; spherical grinding machine with a spherical radius of ≤100mm and a sphericity of 0.005mm; CNC grinding machine with a profile accuracy of ±0.002mm; ultrasonic grinding to improve the machining efficiency of hard and brittle materials. The application fields are extensive: optical components (lenses, prisms with surface Ra<0.01μm, surface accuracy λ/10, reflectors with flatness λ/20), ceramic parts (alumina substrates with flatness 0.001mm, zirconia bushings with roundness 0.002mm), precision bearings (ceramic balls with sphericity 0.0005mm), medical implants (sphericity 0.005mm, all-ceramic crowns with smooth and wear-resistant performance). We have provided customized micro CNC machining services for enterprises such as Zeiss, Schott, Murata, JTEKT, etc., with an annual output of 200,000 pieces.

Technical Parameters of Micro Grinding Equipment

Parameter Category	Parameter Details
Equipment model	FACE Series
Core Positioning	High-efficiency, high-flexibility ultra-precision surface grinding
Number of Axes	/
Machining Accuracy	Can control workpiece tolerance within 0.1µm range.
Core Advantages	Rotary continuous automatic machining; quick model change through software support; ergonomic layout; no cooling system needed for workpiece spindle cooling, energy-saving and environmental friendly.
Typical Applications	Suitable for ultra-precision surface micro grinding of medium or large batch workpieces, such as fuel injection components, gearbox components, hydraulic and motor parts, etc

Parameter Category	Parameter Details
Equipment model	MILL P 500 VHP (Very High Precision)
Core Positioning	Micro machining and mirror-level surface creation
Number of Axes	/
Spindle System	Equipped with Step-Tec 42,000 rpm spindle, HSK-E40 high-rigidity interface
Structural Features	Symmetrical high thermal stability structure and polymer concrete bed, effectively suppressing temperature drift and structural deformation
Key Accuracy	Machining stability and repeatability accuracy ±2µm
CNC System	Can be equipped with Heidenhain TNC 640 or Siemens Sinumerik system
Core Advantages	Achieve excellent surface quality under high-speed and low-vibration cutting, demonstration parts can achieve mirror effect
Typical Applications	micro grinding of precision parts in high-end medical, semiconductor industry and optical industry

Parameter Category	Parameter Details
Equipment model	SGR-700SP
Core Positioning	Ultra-precision end face grinding
Key Accuracy	Minimum infeed 0.001 mm; grinding wheel spindle infeed speed 0.001–1.500 mm/min
Chuck System	Permanent electromagnetic chuck (power off during adsorption, no thermal effect), diameter φ700 mm
Patent Technology	Automatic grinding wheel grinding pressure adjustment mechanism (avoid excessive pressure); 3-point support fixed type surface tilt adjustment mechanism (submicron level adjustment)
Machining Capacity	Corresponding to the maximum workpiece size: 170mm(H) × 700mm(φ) × 300kg
Automation and Environmental Protection	Newly developed automatic grinding sizing device; IE3 specification motor with significant energy-saving effect
Typical Applications	precision micro grinding parts, etc