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In order to enhance the national research and development capability of large five-axis linkage machine tools, promote the improvement of performance and accuracy, promote industrialization, replace imports and meet the machining process requirements for large five-axis linkage machine tools in aviation and aerospace, this paper proposed a viaduct type five-axis gantry boring and milling machining centre.The centre's workbench is a floor standing platform, with the bed placed on both sides of the workbench.The two crossbeams are arranged back-to-back, and move longitudinally along the left and right guide rails (X-axis).The slide plate moves horizontally along the crossbeam guide rails (Y-axis), and the ram moves up and down along the slide plate (Zaxis).The double swing angle CNC universal milling head can achieve rotation around the Z-axis (Caxis) and X-axis (A-axis) to achieve five-axis simultaneous machining under the control of the CNC system.At the same time, the crossbeam of the machining centre has been structurally optimized to effectively reduce the weight of the moving parts, improve the dynamic performance of the machine tool and achieve a μ-level output of repeatable positioning accuracy for large strokes of the machine tool.
Tingzhou et al. (Fri,) studied this question.