The key technology for precision machining in CNC lathe parts factories is the overall comprehensive design technology of lathe parts machine tool systems. The design and manufacturing of conventional machine tools have a great degree of technical tolerance in each link. Each link of ultra precision machine tools is basically at a technical limit or critical application state. Any link that is not considered or handled properly can lead to overall failure. Therefore, in terms of design, it is necessary to have a comprehensive and profound understanding of the overall and various technical aspects of the machine tool system. Based on feasibility and starting from the overall optimum, a comprehensive design of the correlation should be carried out in great detail. Design and manufacturing technology of high rigidity and high stability machine tool body structure. Especially for LODTM machine tools, due to their large body size and weight, the weight of the load-bearing workpiece varies greatly, and any small deformation can affect machining accuracy. Structural design should not only meet the requirements in terms of materials, structural forms, and processes, but also take into account the operability of the machine tool during operation.
Ultra precision workpiece spindle technology for CNC lathe parts factory. Small and medium-sized machine tools often adopt the air static pressure spindle scheme. The air static pressure spindle has low damping and is suitable for high-speed rotary machining applications, but its load-bearing capacity is relatively small. The rotational accuracy of the air static pressure spindle can reach 0.05 μ m. The spindle of LODTM machine tool carries a large size and weight of the workpiece, so it is generally recommended to use a liquid hydrostatic spindle. The hydrostatic spindle has high damping, good vibration resistance, and high load-bearing capacity, but it generates heat at high speeds and requires liquid cooling and constant temperature measures. The rotational accuracy of the hydrostatic spindle can reach 0.1 μ m. In order to ensure spindle accuracy and stability, both pneumatic and hydraulic sources require constant temperature, filtering, and precise pressure control processing.
High precision gas, liquid, temperature, vibration and other working environment control technologies for lathe parts. Machine tool vibration isolation and horizontal attitude control. The impact of vibration on ultra precision machining is very obvious, and it affects even long-distance cars. Machine tool vibration isolation requires special foundation treatment and a combination of air floating vibration isolation measures for the machine tool itself. The machine tool body air floating isolation system also needs to have automatic leveling function to prevent the influence of horizontal state changes on machining during machine tool processing. For machine tools with high isolation requirements for LODTM, the natural frequency of the isolation system should be below 1HZ.