CNC Micro Milling

Micro CNC Machining Technology

The CNC micro milling adopted by Sanluo Precision's processing plant uses high-speed rotating micro milling cutters to process miniature parts, with a cutter diameter of φ0.04mm, a rotational speed of 20000-100000rpm, and a feed rate of 5-500mm/min. The single cutting depth is 0.01-0.5mm, and deep cavity processing is completed by layered milling. The machining accuracy profile tolerance is ±0.005mm, and the surface roughness is Ra0.2-0.8μm. 3-axis, 4-axis and 5-axis simultaneous machining can realize complex 3D curved surfaces, inclined planes and undercut structures. The cutter material is cemented carbide and diamond coating, with a cutting speed of 50-300m/min, which can process steel, aluminum, copper, titanium alloy, engineering plastics and other materials.

Station Accuracy

Precision Engraving Machining Capacity

As a professional manufacturer of CNC micro milling, we are equipped with a high-precision 5-axis machining center with a positioning accuracy of ±0.002mm and a repeat accuracy of ±0.001mm. The precision engraving machining capacity covers: precision molds (the rib width of the precision engraving mold for mobile phone middle plates is 0.3mm, the depth is 2mm, and the surface mirror finish is Ra0.1μm; the R angle of the notebook computer shell mold is 0.2mm with complex inclined top slider structure; the micro cavity size of the electronic device connector mold is 1×2×3mm with an accuracy of ±0.005mm; the micro boss step height of the mobile phone key mold is 0.15mm with a chamfer R0.05mm), medical equipment (the complex spherical surface R of the minimally invasive surgical instrument head is 0.02mm with an accuracy of ±0.001mm; the thread pitch of dental implants is 0.5mm with accurate tooth profile), aerospace parts (the width of the micro cooling channel of turbine blades is 1mm and the depth is 5mm; the dimensional accuracy of the complex special-shaped surface of the instrument shell is ±0.008mm).

Quality Control System

Sanluo Precision strictly controls quality: cutter runout <0.003mm, tool setting accuracy ±0.002mm, CAM optimized tool path, precise matching of cutting parameters, on-machine probe online detection, and coordinate measuring machine accuracy of 0.001mm. We have provided customized CNC micro milling services for customers such as Foxconn, Luxshare Precision, BYD, etc., with an annual output of 500,000 precision parts and a qualification rate of 99.8%.

Equipment Technical Parameters