Our main products are large industrial fans, converter gas blowers, high temperature fans, power station fans, etc., which are widely used in metallurgy, environmental protection, building materials, electric power and other industries. At present, the main intermediate muffler needs to develop and produce high-tech products such as single-stage high-speed fan, axial-flow regulating fan of stator blade and circulating fluidized bed centrifugal fan of 600MW large-scale power station. Requirements: through the research on the flow field distribution of high-speed fan, optimize the impeller shape and improve the overall efficiency of 3-4 fan. First, the vertical machining center X-Y axis precision research; second, the gantry machining center ventilation muffler elbow and pentahedron boring machine CAD design and finite element analysis; third, CNC gantry pentahedron boring and milling machine modular design; fourth, high accuracy, high efficiency, high complexity The programming and software application of axis linkage machining; the fifth is the automatic detection and compensation technology of CNC machine tool error (real-time compensation).