Micro Turning

Sanluo Precision is a professional manufacturer and supplier of micro turning in China, mainly engaged in precision turning of miniature rotating parts, providing customers with high-quality micro CNC machining processing services. We offer professional customized micro CNC machining services for precision instruments, medical equipment, optical devices, electronic communication and other industries, supporting the customization of complex and difficult parts. We can achieve the machining accuracy of micron-level micro shaft, sleeve and disc parts, fully meeting the high requirements of high-end manufacturing for micro turning.

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Product Description

Technology Advantages

Our micro turning processes miniature rotating parts on precision lathes. Machining range: outer diameter φ0.04～10mm, inner diameter φ0.02～8mm, length ≤100mm. Turning accuracy: diameter accuracy ±0.003mm, roundness 0.002mm, cylindricity 0.003mm, concentricity 0.005mm, surface roughness Ra0.2-0.6μm. The cutters are diamond or cemented carbide finish turning tools with a tip radius of R0.1-0.4mm. Cutting parameters: spindle speed 5000 r/min to 50000 r/min, feed rate 0.005 mm/r to 0.05 mm/r, cutting depth 0.01 mm to 0.3 mm. Sufficient cooling of cutting fluid can reduce thermal deformation and improve surface quality.

Micro Turning Station Accuracy

Dimensional accuracy	OD	ID	T（C）	DP	GD
unit:±/mm	0.001	0.001	0.001	0.001	0.001
Geometric accuracy	Roundness	Coaxiality	Straightness	Cylindricity	Position tolerance
unit:±/mm	0.001	0.002	0.001	0.002	0.002
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

Turning Machining Capacity

Sanluo Precision's processing plant has comprehensive micro turning capacity: cylindrical turning (cylindrical surface, conical surface, spherical surface, formed surface with a diameter of φ0.1～10mm, roundness 0.002mm, Ra0.3μm), face turning (flatness 0.005mm, perpendicularity 0.01mm, chamfer C0.1～0.5mm), step shafts (multi-stage steps with a height of 0.1～5mm and clear right angles), internal turning (hole diameter φ0.5～8mm, depth-diameter ratio ≤5：1, roundness 0.003mm), thread turning (pitch 0.3～2mm, thread angle 60°±10′, pitch diameter accuracy ±0.01mm), grooving and parting (groove width 0.3～3mm, groove depth ≤5mm).

Precision Machining Process

As a professional micro turning processing plant, we have precise process control: rough turning with a cutting depth of 0.2～0.5mm to quickly remove excess material, leaving a finish turning allowance of 0.1～0.2mm; semi-finish turning with a cutting depth of 0.05～0.15mm and a roughness of Ra1.6μm; finish turning with a cutting depth of 0.01～0.03mm, accuracy ±0.005mm and surface Ra0.4μm; ultra-precision turning with diamond cutters, cutting depth 0.005～0.01mm, accuracy ±0.002mm and surface Ra0.1μm. Process measures: reasonable clamping to reduce deformation, sharp cutters to reduce cutting force, sufficient cooling to control temperature, multiple measurements for timely correction.

Rich Application Cases

Micro turning is applied in precision instruments (micro shafts with φ0.05-3mm, length-diameter ratio ≥20 and runout 0.005mm; micro sleeves with wall thickness 0.3-0.8mm and concentricity 0.01mm), medical equipment (orthopedic instrument joint shafts with spherical surface R1-3mm and surface Ra0.3μm; endoscope lens holders with concentricity 0.005mm), optical devices (lens holders H7 with end face perpendicularity 0.005mm; optical fiber ferrule ceramic materials with roundness 0.002mm), electronic communication (connector shells with wall thickness 0.2-0.5mm; micro motor shafts with eccentricity 0.05mm and dynamic balance G2.5 grade). Sanluo Precision has directly or indirectly provided customized micro CNC machining services for enterprises such as Sony, Canon, Olympus, TE Connectivity, etc., with an annual output of 3 million pieces.

Technical Parameters

Parameter Category	Parameter Details
Equipment model	SwissNano 3
Core Positioning	Ultra-high precision small workpiece machining
Number of Axes	Six-axis motion structure
Design Features	The back spindle installed on three linear axes makes the machine tool extremely easy to use
Application Fields	micro turning of parts with ultra-high precision requirements in medical, micromechanical, electronic and other industries

Parameter Category	Parameter Details
Equipment model	Bumotec 191neo
Core Positioning	Seven-axis five-linkage mill-turn compound machining
Axis and Linkage	Seven-axis five-linkage
Performance Improvement	Compared with S191 machining center, tool change time is reduced by 15% and speed is increased by 12%
Spindle System	Spindle power increased to 22kW, torque up to 175Nm, tool magazine with a maximum of 90 tool positions
Sub-spindle Options	Four options including single vise (P type), multi-vise and fixture combination (RPM type) with high flexibility
Process Capacity	In addition to milling and turning, it can also realize grinding, polishing, hobbing, gear hobbing and diamond tool mirror machining, etc
Typical Applications	micro turning of high-precision, high-value complex parts such as medical equipment, orthopedic implants, aerospace fuel nozzles, micromechanics, etc