Method and apparatus for eliminating free clearances in a press shutheight adjustment mechanism

   
   

An apparatus for use in a press machine eliminates the free clearances present between the threaded portions of a screw and adjustment nut assembled in a shutheight adjustment mechanism. A hydraulic assembly directs a pressurized fluid against an outer periphery of the adjustment nut to effectively compress the adjustment nut and cause its threaded portion to be displaced into interlocking engagement with the threaded portion of the screw. Alternatively, the hydraulic assembly may be arranged to hydraulically pressurize an interior space of the screw to effectively expand the screw and cause its threaded portion to be displaced into interlocking engagement with the threaded portion of the adjustment nut.

Un aparato para el uso en una máquina de la prensa elimina las separaciones libres presentes entre las porciones roscadas de un tornillo y la tuerca del ajuste montada en un mecanismo del ajuste del shutheight. Una asamblea hidráulica ordena un líquido presurizado contra una periferia externa de la tuerca del ajuste para comprimir con eficacia la tuerca del ajuste y para hacer su porción roscada ser desplazado en el contrato que se enclavija con la porción roscada del tornillo. Alternativomente, la asamblea hidráulica puede ser arreglada para presurizar hidráulicamente un espacio interior del tornillo para ampliar con eficacia el tornillo y para hacer su porción roscada ser desplazado en el contrato que se enclavija con la porción roscada de la tuerca del ajuste.

 
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