HYDROSTATIC PRESSURE CALCULATION AND OPTIMIZATION FOR DESIGN OF BEAM & SLIDE-REST GUIDEWAYS IN HEAVY DUTY CNC VERTICAL TURNING MILL |
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摘 要: |
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关 键 词: | 垂直旋转 横梁滑板 参数最佳化 流体静力学 |
HYDROSTATIC PRESSURE CALCULATION AND OPTIMIZATION FOR DESIGN OF BEAM & SLIDE-REST GUIDEWAYS IN HEAVY DUTY CNC VERTICAL TURNING MILL |
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Authors: | ZHAO Ming HUANG Zhengdong LI Bin CHEN Liping |
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Affiliation: | CAD Center, Huazhong University of Science and Technology, Wuhan 430074. China |
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Abstract: | Aiming at the approximate error of commonly used methods on calculation of hydrostatic pressures of closed hydrostatic guideways with multiple pockets, a more accurate solution is proposed. Taking design of beam & slide-rest guideways for a heavy duty CNC vertical turning mill as an example, under an assumption that stiffnesses of guideways and their jointing structure are sufficiently large, the pressures of the pockets can be attained by adding a co-planarity equation that con strains pocket centers. Then, an optimization model is built to minimize the highest pocket pressure under additional constraints that are posed on the highest seal margin pressure, the highest levitating pressure of the pockets, and the maximum deformation of the guideways. The optimization problem is solved sequentially by using the methods of design of experiments and adaptive simulated annealing on iSIGHT software platform. The results show significant improvements to the original design. Optimized maximum hydrostatic pressure meets the requirement of hydraulic system. |
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Keywords: | CNC vertical turning mill Beam Slide rest Hydrostatic guideway Parameter optimization BEAM DESIGN OPTIMIZATION CALCULATION PRESSURE HYDROSTATIC MILL TURNING hydrostatic pressure requirement hydraulic system results show significant original optimization problem design of experiments adaptive simulated annealing iSIGHT |
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