Abstract
In order to solve some problems relating to airflow caused by rotating chuck of a CNC lathe or turning center, the airflow in a closed space assumed a machining space is investigated by the MAC (Maker-and-Cell) method. An analytical model and calculated grids are a three-dimensional space assumed a machining space and the staggered grids respectively. The analytical results have good accordance with characteristic airflow patterns observed by means of the tuft and tracer methods; (1) A radial airflow blowing from the rotating chuck strikes the panel near the headstock side, and then goes in the direction of tailstock through the surface of panel. (2) An entrained-flow exists around the rotating chuck. (3) The separation of airflow from the panel is observed on the left, right, upper and bottom panels.
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