Coolant distribution for tool cooling

Abstract

The invention relates to a cooling system for cooling a tool via cooling sites ( 6 ), these being composed of a capillary tube ( 64 ) associated with a supply pathway and of an expansion space ( 65 ) which is associated with a return pathway ( 41 ) and into which the capillary tube ( 64 ) leads, so that a coolant conducted in liquid form to the cooling sites ( 6 ) evaporates and is conducted away in the form of gas. A distributor block ( 1, 11 ), which can be connected to a coolant source and to a coolant sink, and into which coolant channels ( 3,31,4,41 ) have been moulded in at least one plane, has been designed so that it can be flanged onto a tool.

1 . Coolant distribution for the cooling of a tool through cooling points ( 6 ) that consists of a capillary tube ( 64 ) connected to a feeding loop ( 31 ) and an expansion chamber ( 65 ) connected to a return loop ( 41 ) into which the outlet of the capillary tube ( 94 ) opens so that a coolant conveyed in a liquid state to the cooling points ( 6 ) evaporates and is drawn off as a gas, wherein a hermetically sealed distribution block ( 1 ,  11 ) attachable to a coolant source and a coolant sump is fitted with coolant channels ( 3 ,  31 ,  4 ,  41 ) carved out in at least one plane and conformed to be attachable to a tool by a flange, the coolant channels ( 3 ,  31 ,  4 ,  41 ) are conformed as feeding loops ( 3 ,  31 ) branching out to the cooling points ( 6 ) and as return loops ( 41 ) leaving the cooling points ( 6 ) to be joined in a collective conduit ( 4 ), the coolant feed occurs from the coolant source to the feeding loops ( 3 ,  31 ) through a first hose ( 321 ) attached to an inlet conformed as a hose coupling ( 32 ) and at least one magnetic switching unit ( 2 ) mounted after the inlet, and the coolant discharge occurs from the collective return conduit ( 4 ) through a second hose ( 421 ) to the coolant sump, where the outlet of the collective return conduit ( 4 ) is conformed as a hose coupling ( 42 ) to which the second hose ( 421 ) is attached. 
     
     
         2 . Coolant distribution according to  claim 1 , wherein the coolant channels ( 3 ,  31 ,  4 ,  41 ) are boreholes introduced into the distribution block ( 1 ), which lead to crossings forming connecting points and/or directly to the cooling points ( 6 ), and are hermetically sealed toward the outside. 
     
     
         3 . Coolant distribution according to  claim 1 , wherein the distribution block ( 1 ,  11 ) consists of at least two plates and the coolant channels ( 3 ,  31 ,  4 ,  41 ) and are conformed in at least one plate ( 1 ) as groove-like recesses and covered by another plate ( 11 ). 
     
     
         4 . Coolant distribution according to  claim 1 , wherein the coolant channels ( 3 ,  31 ,  4 ,  41 ) are realized so that grove-like recesses are carved out in the distribution block ( 1 ), in which the tubes conveying the coolant are set in an irremovable manner. 
     
     
         5 . Coolant distribution according to  claim 1 , wherein at least one magnetic switching unit ( 2 ) is attached to the feeding loop ( 3 ,  31 ) by plug-in connectors ( 5 ). 
     
     
         6 . Coolant distribution according to  claim 1 , wherein the capillary tube ( 64 ) is fastened to a connecting element ( 62 ) with an inlet and an outlet, so that the capillary tube ( 64 ) is tightly connected to the feeding loop ( 31 ) by the inlet, and the expansion chamber ( 65 ) is tightly connected to the return loop ( 41 ) by the outlet. 
     
     
         7 . Coolant distribution according to  claim 6 , wherein the connecting element ( 62 ) is conformed as a supporting bushing ( 61 ) set in the distribution block in a plug-in manner.