Method and apparatus for detecting airtight state of machine-tool window
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United States of America Patent
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Oct 6, 2015
Grant Date -
Jun 5, 2014
app pub date -
Nov 19, 2013
filing date -
Dec 3, 2012
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Abstract
Methods and apparatus for detecting machine tool window airtightness includes an airtight state detector, having a sensor detecting the pressure in a space of the window, and a judging section for determining appropriateness of the airtight state of the space based on a pressure value from the pressure sensor and outputting a judgment result. Pressure in the window space, which initially may be pressurized or pressure-reduced, is detected intermittently by the pressure sensor, and the judging section determines appropriateness of the airtight state of the window on the basis of a variation state of the detected pressure.
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