Device for protecting linear glass scale in machine tool during treatment of workpiece, has diaphragm held in position by device, where air from outside exhibits large pressure such that pressure on surface of diaphragm produces large force

摘要

The device has a diaphragm (3) held in a position by a resetting device (4) such that aperture in a housing (2) is closed by the diaphragm. Compressed air from outside flows into a pressure chamber of the housing via a compressed air connection (5) and exhibits a greater air flow than that of air flowing through a channel (6) in a cleaning chamber. The air exhibits large pressure such that pressure acting on a surface of the diaphragm or a component coupled to the diaphragm produces larger force with which the resetting device is held on the diaphragm or the component coupled to the diaphragm.