The key technical difficulties of domestic five-axis precision parts machining are materials, equipment, technology and theoretical research. However, Japanese precision shaft machining companies are able to develop materials (e.g. 15MH, KWS4MA) for precision shafts in conjunction with steel mills to improve precision shaft characteristics. Custom machining of shafts is a common type of component that is constructed as a rotating body, generally longer than its diameter, and is used in a wide variety of industrial equipment to support transmission components, transmit torque and carry loads.
The key production equipment for hardware precision parts machining is custom equipment and cannot be purchased on the market. Equipment organization and systems require high precision, high investment and difficult development. Most companies are not willing to develop these equipment; precision shaft process parameters belong to the core data of foreign companies, precision shaft process subdivision can reach dozens, each process parameter must verify huge experimental data, process parameters must be long-term accumulation and cost investment, domestic companies still have a lot of work to do.
