With the rapid development of China's economy in the 21st century, the consumption of electronic devices has been increasing. Especially, the domestic demand for cell phones and special micro-motors is increasing, and so is the demand for precision shafts, leading to many foreign companies flocking to China to build factories and import technology. In China, many precision CNC machining companies gradually appeared in China and produced a certain scale. All over Zhejiang. However, the domestic precision axis in the precision, technology, equipment and technology gap with foreign companies, the product is mostly in the middle and low grade.
Five-axis precision parts processing commodity precision provisions precision shaft outside diameter φ0.5 ~ φ3mm, length is generally less than 300mm, strong precision outside diameter tolerance is generally 1µm up and down, special requirements to reach 0.4µm, Japanese companies can reach 0.1µm; roundness provisions 0.5µm surface roughness value as follows Ra = 0.025µm in this range, the radial runout provisions below 1µm. Precision shafts are usually non-standard custom parts made according to customer requirements or sample drawings. Precision shafts are used in many industries, such as special micro-motor parts, precision electronic parts, automotive parts, office system parts, home appliance parts, and power tool parts.
