Turned Parts

Sanluo Precision is a leading manufacturer and supplier of turned parts in China, with 18 years of technical accumulation in turning processing, providing customers with high-precision CNC lathe machining services. We offer professional customized CNC lathe machining services for various industries, supporting the customization of complex and difficult parts. From simple cylindrical turning to complex contour turning, we meet the processing requirements of various rotating parts, fully complying with the stringent standards of high-end manufacturing for precision turned parts.

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Product Description

Turning Processing Technology

Sanluo Precision's turned parts turning process adopts advanced technology, where the workpiece rotates as the main motion and the tool feeds as the cutting motion to remove excess material and form a rotating surface. Turning elements include cutting speed Vc=πDn/1000, feed rate f, and cutting depth ap, which are reasonably matched to ensure quality and efficiency. Turning methods include cylindrical turning, face turning, internal hole turning, thread turning, grooving and parting, form turning, etc., selected according to part characteristics. Turning accuracy: rough turning IT11-12 grade, semi-finish turning IT9-10 grade, finish turning IT7-8 grade, precision turning IT5-6 grade. Surface roughness: rough turning Ra12.5-25μm, semi-finish turning Ra3.2-6.3μm, finish turning Ra0.8-1.6μm, precision turning Ra0.2-0.4μm.

Station Accuracy

Dimensional accuracy	OD	ID	T（C）	DP	DA
unit:±/mm	0.002	0.002	0.002	0.002	0.0001
Geometric accuracy	Roundness	Coaxiality	Straightness	Cylindricity	Circular runout
unit:±/mm	0.002	0.004	0.002	0.005	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

The configured testing instruments and measuring tools include: CMM coordinate measuring machine, image measuring instrument, projector, laser diameter gauge, laser interferometer, roughness meter, roundness meter, tool microscope, stereomicroscope, micrometer, pin gauge, dial indicator, micrometer with 0.0001mm accuracy, electronic height gauge, caliper, gauge block, hardness tester, thread gauge.

Typical Application Cases

As a professional manufacturer of turned parts, Sanluo Precision's products are widely used: standard parts (bolts, nuts, pins, bushings, washers, etc., with large batches and IT8-10 grade accuracy; optical shafts with diameter φ10-100mm, straightness 0.02mm/100mm, surface Ra0.8μm, chrome-plated or quenched), precision parts (spindles with runout 0.005mm, surface Ra0.2μm, dynamic balance G0.4-G1.0 grade; lead screws with pitch accuracy 0.01mm, lead cumulative error 0.02mm; valve cores with fit clearance 0.005-0.01mm and good sealing performance), complex parts (eccentric shafts with eccentricity 1-50mm, eccentricity of two centers 0.02mm; spline shafts with tooth profile accuracy IT7 grade, tooth side clearance 0.02mm; spherical surfaces with sphericity 0.05mm, surface Ra0.8μm), large parts (rolls with diameter φ300-800mm, length ≤3000mm, cylindricity 0.1mm; wind power main shafts with diameter φ200-500mm, surface sprayed). We have provided customized CNC lathe machining services for enterprises such as CRRC, Zhenhua Heavy Industries, NGC Transmission, Hangzhou Gearbox Group, etc., with an annual turning processing volume of 1 million pieces, featuring advanced technology and reliable quality.

Equipment Technical Parameters

Parameter Category	Parameter Details
Equipment model	Swiss DT 26SII
Core Positioning	Reliable, flexible and high-productivity Swiss-type lathe
Machining Capacity	Maximum bar diameter 26 mm
Tool System	Flexible tool configuration allows the machine to be equipped with up to 28 tools, including 14 power tools
Bed Structure	Solid bed and optimized motion axis structure ensure the machine has the best rigidity
Core Advantages	Flexible and reliable, easy to use, and can significantly improve productivity
Typical Applications	precision turned parts, etc

Parameter Category	Parameter Details
Equipment model	QRX-50MSY L
Core Positioning	Efficient synchronous processing of complex shaft and disc parts
Number of Axes and Linkage	4-axis linkage
Y-axis Stroke	80mm (±40mm)
Core Configuration	Dual spindles + upper and lower turrets (both with power tool holders and Y-axis)
Machining Capacity	Bar processing capacity Φ52 mm, chuck size supports 6 inches/8 inches
CNC System	MAZATROL SMOOTH G 4-axis linkage CNC system, touch screen operation with interference check
Core Advantages	Two independent processing areas, enabling synchronous processing and balanced cutting of dual workpieces, doubling processing efficiency
Typical Applications	precision turned parts, etc