Sanluo Precision is a well-known processing manufacturer and supplier in China, mainly providing high-precision customized processing services to customers worldwide. It supports the customization of complex and difficult parts. Machining grinding requires advanced equipment, as well as strict control over the selection of grinding wheels, grinding parameters, cooling and lubrication, constant temperature and humidity environment, and the establishment of a complete quality management system to fully meet customer needs. Sanluo Precision can achieve grinding precision at the micrometer level or even sub-micrometer level, with surface roughness reaching Ra0.02-0.1 μm. It can be used for high-precision parts such as precision bearings, molds, measuring tools and instruments, precision guideways, optical components, etc. By using advanced grinding technology, high-quality grinding wheels and precise detection instruments, stable precision grinding work can be completed, providing customers with reliable parts and technical support.
The grinding processing types are rich and the precision is outstanding, covering surface grinding, face grinding, gear grinding, profile grinding, high precision grinding, precision CNC grinding and ultra-precision grinding. It is widely used in high-end fields such as precision molds, medical devices, unmanned aircraft, aerospace, etc. Planar grinding is divided into peripheral, end face, and peripheral-end face grinding methods, with processing accuracy reaching 0.001mm. The selection of grinding wheels and rotational speed should be matched according to the material of the workpiece, and the accuracy should be detected through professional measuring tools. End face grinding can achieve ±0.001mm accuracy and Ra0.001μm surface roughness, and is processed in three stages, suitable for customized requirements in multiple fields. Gear grinding is the precision processing of hardened gears, and multiple processing methods can achieve 3-6 levels of precision, suitable for different production batch requirements; Forming grinding process has a wide range, covering various grinding types such as outer and inner circle grinding, with processing accuracy reaching 0.001mm. Machining grinding (such as coordinate grinding) has a positioning accuracy of ±0.0005mm, achieving high-precision processing through a precise coordinate system; Precision CNC grinding has a precision of 0.0005mm, with surface roughness Ra0.4μm; Ultra-precision grinding realizes nanometer-level material removal, with size accuracy of ±0.1-0.5μm and surface roughness Ra0.001-0.01μm. Sanluo Precision has deeply specialized in various grinding fields, with mature technology, and can provide regular and customized processing services. It strictly controls material entry, process parameters and accuracy detection, relying on professional equipment and technical team, to provide stable and reliable processing services for various industries.
The machining grinding process of Sanluo Precision belongs to the machining process for ultra-high precision surface processing of parts. The processing principle is that the grinding wheel rotates at a high speed (V = 20-35 m/s), and the abrasive particles perform micro-cutting on the workpiece. Each cutting depth is 0.0005-0.01mm, and multiple passes are made to gradually achieve the precision. Combined with sufficient coolant to prevent thermal deformation, the processing stability is ensured. The processing accuracy reaches IT1-IT6 levels, with tolerances of ±0.001mm to ±0.008mm, form tolerance of roundness 0.001mm to 0.005mm, flatness 0.001mm to 0.008mm, straightness 0.002mm to 0.01mm, and perpendicularity 0.002mm to 0.015mm. The surface roughness is 0.05-0.4μm, rough grinding Ra 0.4μm, fine grinding Ra 0.2μm, ultra-fine grinding Ra 0.1μm, and mirror grinding Ra 0.05μm. The processing types include external circle precision grinding (diameter φ1-100mm, roundness 0.002-0.005mm, cylindricality 0.003-0.008mm), internal circle precision grinding (inner hole diameter 3-100mm, hole diameter accuracy ±0.002mm, roundness 0.002-0.005mm), and plane precision grinding (plane flatness 0.002-0.0035mm).
Sanluo Precision's processing plant is equipped with various precision grinding equipment, including precision external cylindrical grinding machines with diameters ranging from 5 to 320mm, with an IT5 grade of precision and a roundness of 0.002mm, and a surface Ra of 0.2μm, suitable for shaft parts; precision internal cylindrical grinding machines with a diameter of φ3 – 300mm, with a hole diameter accuracy of ±0.003mm, a roundness of 0.003mm, and a surface Ra of 0.4μm, suitable for sleeve hole parts; precision flat grinding machines with a worktable of 600×1200mm, with a flatness of 0.002mm, a parallelism of 0.003mm, and a surface Ra of 0.2μm, capable of grinding reference surfaces. The CNC external cylindrical grinding machines are equipped with an online measurement system to complete the grinding closed-loop control, ensuring long-term stable processing accuracy and supporting accurate machining and high precision machining support work. The grinding wheel system consists of white corundum, CBN, and diamond, and selects the appropriate grinding wheel according to different materials, grinding hard materials such as quenched steel, bearing steel, high-speed steel, hard alloy, ceramics, etc., with small tool wear and long life, and the accuracy is not affected by the hardness of the material.
The precision grinding advantage of Sanluo Precision is obvious, and it can be adapted to various material processing applications. The dimensional accuracy ranges from IT1 to IT6, with ±0.001 to 0.008mm, form position tolerance of roundness 0.001 to 0.005mm, flatness 0.002 to 0.003mm, straightness 0.002 to 0.01mm, and is ten times the precision of ordinary grinding; the surface roughness is Ra 0.05 to 0.4μm, mirror surface grinding Ra 0.05μm, with high reflectivity and low friction coefficient. Hard materials such as quenched steel HRC60-65, bearing steel GCr15, high-speed steel W18Cr4V, hard alloy YG8, ceramic alumina, etc. can all be processed for precision. Turning and milling cannot be processed. The numerical control system precisely controls, the grinding wheel automatically adjusts and compensates, online measurement of dimensions is closed-loop control, batch stability is good, CPK ≥ 1.67, batch consistency is ±0.003mm. Complex-shaped parts can be processed to meet high precision requirements using forming grinding, coordinate grinding and multi-axis linkage processing. After quenching, efficient grinding with CBN grinding wheels is carried out to ensure that the accuracy does not change due to the hardness of the material, and the service life of the equipment is extended.
The precision grinding technology of Sanluo Precision Factory has been widely applied in the fields of aerospace, mold manufacturing, precision instruments, medical devices, etc. For example, the titanium alloy Ti6Al4V used for aerospace precision shafts, with a diameter of φ20-100mm and roundness of 0.003mm, surface Ra 0.4μm, and dynamic balance G0.4 grade; the nickel-based alloy Inconel718 used for disc tenon grooves, with groove width accuracy of ±0.005mm and surface roughness Ra ≤ 0.4μm. During mold manufacturing, NAK80 and S136 are used for precision core and cavity, with surface accuracy of ±0.002mm, mirror surface polishing after which Ra 0.05μm, good demolding performance; the hard alloy molds use YG8 and YG15 diamond grinding wheels, with accuracy of ±0.002mm, surface Ra 0.1μm, and long wear life. In precision instruments, the quenched steel for guide rails HRC58-62, straightness 0.002mm/300mm, parallelism 0.002mm, surface Ra 0.1μm; the precision lead screw GCr15 with hardness HRC60-64, lead screw pitch accuracy 0.002mm/300mm, thread accuracy 4 grade, surface Ra 0.2μm. The accuracy of the artificial joint surface of medical devices is ±0.005mm, surface Ra 0.1μm, with a service life of over 20 years; surgical instruments have sharp edges, smooth surfaces, and are sterile. It has provided customized services for enterprises such as Huawei and Mindray Medical, with an annual production of tens of thousands of machining grinding parts, precision IT1-IT6 grade, surface Ra 0.05-0.4μm, good roundness, shape accuracy, stable batch production, reliable quality, and customer trust.
SanluoPrecision uses the combination of precision grinding, accurate machining, and high-precision machining to offer customers customized processing services ranging from micrometer-level precision to complex parts. Relying on advanced precision equipment, scientific and rigorous processes, strict inspection systems, and rich industry experience, it ensures that the dimensions, shape, and surface quality of each batch of parts are traceable and verifiable. It provides reliable processing guarantees for high-end industries such as aerospace, precision molds, optical instruments, and medical devices, and has become a trusted supplier for global customers.
