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Priority to ES0249727ApriorityCriticalpatent/ES249727A3/en
Publication of ES249727A3publicationCriticalpatent/ES249727A3/en
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(AREA)
Abstract
Perfeccionamientos in the portapinzas of the lathes, characterized in that on the extreme frustoconical part of the clamp is acted by means of a frustoconical nozzle cap sliding envelope on the clamp. In the opening position there is an annular space between the nozzles and in the closed position of the nozzle surrounding the bushing presses on the faces of the elastic grippers, causing them to close on the bar that is axially guided by the head. The displacement of the bushing is achieved by the introduction of balls in the annular raceway formed by a notch in the middle near the inner end of the mobile bushing. The introduction of the balls in the groove, which causes the displacement of the sleeve and the consequent closing of the clamp is achieved when the balls are pushed inward by a protruding edge of the mobile flange that drives them through the holes Radials of the rotating main body fitting them into the raceway of the sleeve that advances to the correspondence of the channel with the radial holes. (Machine-translation by Google Translate, not legally binding)
ES0249727A1959-05-291959-05-29Improvements in the tornos portapinzas (Machine-translation by Google Translate, not legally binding)
ExpiredES249727A3
(en)
Valve with an annular channel between the valve housing and a centrally built-in preferably streamlined insert, which channel can be closed by a sleeve-shaped, elastic closing body surrounding the insert.