Jingxiang Hu

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For CNC machine of certain type, its vibration modes are quite denseness because the machine tool belongs to a large and complex structure. In order to obtain dynamical characteristics of the spindle system in typical cutting condition, the testing scheme of pseudo random relative excitation and measure system are used in the paper. The theoretical model of(More)
Rolling process belongs to geometric non-linearity, material non-linearity and boundary non-linearity, which is a complex and high non-linear problem, it is impossible to obtain analytical solution in terms of trying to roll or physical experiment because of high cost, waste time and venture. To adopt real sizes for billet and rollers, the finite element(More)
An optimum method is presented to obtain the track parameters of wire electrical-discharge machining (WEDM) of closed interface on the ring with high precision. Firstly, the three-dimensional model in WEDM motion space of the ring was obtained based on AutoCAD software and WEDM experiment. Seven track parameters were defined, and then the effects of the(More)
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