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- W2017640188 abstract "Abstract Hydrodynamic journal bearings have been widely used in various types of rotating machinery, ranging from heavy duty, high-impact applications, such as the crank shaft of an internal combustion engine and turbine rotor, to high-precision, light load applications, such as precision spindles in cylindrical grinding machines. Although extensive theoretical and experimental results have been presented for hydrodynamic bearings, the available literature seems to be limited for precision hydrodynamic bearing spindles. In this study, practical methods have been developed to quantify the performance of a hydrodynamic wheel spindle operating in the horizontal mode to produce precision parts with submicron roundness tolerance and very fine surface finish. These methods can easily and cost effectively be implemented on various machines in an actual production environment for effective predictive maintenance. The main experimental results show that the long-term drift of the spindle at steady state is less than 1 μm vertically and 0.2 μm horizontally, and the radial error motion of the spindle based on unfiltered data is less than 1.6 μm for all the speeds tested. It is also found that the shaft center position (vertical lift and horizontal shift) at the cold condition is substantially different from that in the steady-state warm condition. From the results, an optimal spindle speed is recommended." @default.
- W2017640188 created "2016-06-24" @default.
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- W2017640188 date "1998-01-01" @default.
- W2017640188 modified "2023-09-30" @default.
- W2017640188 title "Experimental Study of a Precision, Hydrodynamic Wheel Spindle for Submicron Cylindrical Grinding" @default.
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- W2017640188 doi "https://doi.org/10.1016/s0141-6359(98)00003-8" @default.
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