Power Tool Blade Mount with Radial Fluid Flow Channels

Abstract

A mount is disclosed for mounting a blade on a rotary spindle of a power tool. The spindle has an axial bore through which a cooling fluid may flow. The mount includes a disk configured for directing cooling fluid outward in a generally radial direction with respect to the axis of spindle when the blade is mounted face-to-face with an outer face of the disk. An adapter is also disclosed that can be used with a conventional blade mount for achieving the same result.

1 . A mount for mounting a blade on a spindle of a power tool for rotation of the blade about an axis to perform an operation on a work piece, said spindle having an axial bore through which a cooling fluid may flow, said mount comprising
 a body comprising a disk with a central axis generally coincident with said axis of rotation, said disk having an inner face, an outer face, and a peripheral edge,   a bore in the body generally centered on the central axis of the disk, said bore having an open end for receiving the spindle of the power tool and a closed opposite end,   at least one fastener opening in the outer face of the disk spaced in a radial direction from said central axis for receiving a fastener to attach a blade in face-to-face relation with the outer face of the disk,   one or more grooves in the outer face of the disk extending from a central region of the disk outwardly to the peripheral edge of the disk, each groove having an open side adapted to be closed by the blade when the blade is in said face-to-face relation with the outer face of the disk, and   one or more flow passages connecting the spindle-receiving bore in the body to respective one or more grooves for flow of cooling fluid along the grooves to the work piece when the blade is in said face-to-face relation with the outer face of the disk.   
     
     
         2 . The mount set forth in  claim 1 , comprising a plurality of said grooves extending generally with respect to said central axis of the disk at substantially equal intervals around the axis. 
     
     
         3 . The mount set forth in  claim 2 , comprising four grooves spaced at intervals of about 90 degrees around the central axis. 
     
     
         4 . The mount set forth in  claim 3 , wherein each flow passage extends at about a 45 degree angle from the spindle-receiving bore to a respective groove. 
     
     
         5 . The mount set forth in  claim 3 , wherein there are two fastener openings between each pair of adjacent grooves. 
     
     
         6 . The mount set forth in  claim 1 , wherein the spindle-receiving bore extends into the disk and stops short of the outer face of the disk. 
     
     
         7 . The mount set forth in  claim 1 , wherein said body further comprises a hub extending from the inner face of the disk, said spindle-receiving bore extending through the hub into the disk and being threaded for threaded engagement with the spindle of the power tool. 
     
     
         8 . The mount set forth in  claim 1 , wherein said disk and hub are integrally formed as one piece. 
     
     
         9 . The mount set forth in  claim 1 , in combination with a thin, substantially planar blade. 
     
     
         10 . The mount set forth in  claim 1 , in combination with said power tool and a thin, substantially planar blade mounted on said cutting tool by said mount. 
     
     
         11 . An adapter for diverting axial fluid flow through a spindle of a power tool to fluid flow in a generally radial direction with respect to an axis of rotation of a blade on the spindle, said adapter comprising
 a disk having an inner face, an outer face, a peripheral edge, and a central axis,   fastener openings extending through the disk from the outer face to the inner face for receiving fasteners to attach the disk to a blade mount on the spindle of the power tool such that the inner face of the disk is in face-to-face relation with a blade positioned between the blade mount and the disk, and   one or more grooves in the inner face of the disk extending from a central region of the disk outwardly to the peripheral edge of the disk, each groove having an open side adapted to be closed by the blade when the blade is in said face-to-face relation with the outer face of the disk whereby cooling fluid flowing axially through bores in the spindle and blade mount is diverted by the disk for flow along the grooves to the work piece.   
     
     
         12 . The adapter set forth in  claim 11 , wherein said central region of the disk is free of fluid-flow apertures extending axially completely through the disk. 
     
     
         13 . The adapter set forth in  claim 12 , comprising a plurality of said grooves in fluid communication with one another in the central region of the disk. 
     
     
         14 . The adapter set forth in  claim 13 , comprising four grooves spaced at intervals of about 90 degrees around the central axis of the disk. 
     
     
         15 . The adapter set forth in  claim 14 , wherein there is one fastener opening between each pair of adjacent grooves. 
     
     
         16 . The adapter set forth in  claim 11 , in combination with said power tool and a thin, substantially planar blade mounted on the power tool by said blade mount.