关键词: 非可展开曲面, 空间等距触发, 多轴联动, 残余误差, 运动触发协同控制

Abstract: Non-deployable curved surface electronic functional structures are difficult to manufacture and have poor precision. Therefore, this study proposes a non-deployable curved surface multi-material inkjet printing method based on five-axis linkage. The five-axis motion mechanism drives the dual-array nozzle to spray dielectric materials and conductive materials on the non-deployable curved surface to form a conformal electronic functional structure. Firstly, the non-deployable curved surface model is discretized by triangular patches and polynomial surface reconstruction is performed, and the print data is generated by dividing small line segments according to the bow height error; In order to solve the problem of ink slope flow, the normal vector printing method and the spatially equidistant nozzle triggering method are successively proposed, which realizes the horizontal printing of the normal vector of the multi-axis linkage non-deployable surface, and reduces the triggering error by 96.5% compared with the timing injection. Secondly, the influence of the nozzle triggering algorithm on the printing accuracy is analyzed, and the residual length compensation algorithm is proposed to realize the simultaneous printing of curved surfaces with multiple materials. Finally, a prototype is developed and the three-dimensional printing experiments of conformal antennas are operated. The test results of the printed parts show that the average absolute error of the line width and line spacing of the wire layer can be controlled within 7.2 μm when using the motion jet synergistic control method to carry out the curved surface printing. It lays the foundation of the integrated manufacturing of electronic equipment such as conformal antennas.

Key words: non-deployable curved surface, position interpolation, multi-axis linkage, residual error, motion-triggered cooperative control