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US 4,795,292 AGranted
Chuck for rotary metal cutting tool
OwnerLeonard Dyeinventor
Life of this patent
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OwnerLeonard Dyeinventor
Estimating the term…
A chuck for a cylindrical rotary metal cutting tool, such as an end mill, is provided with a liquid coolant system. The chuck is constructed to direct cooling liquid onto a cutting tool secured in an axial bore defined therein with a plurality of converging liquid streams directed at the tool. The chuck is constructed with alternative passageways. Liquid coolant may be directed along a central, axial cooling liquid passageway remote from a transverse end face of the chuck. Liquid may pass radially outwardly therefrom through radial bores and into intersecting longitudinal cooling liquid distribution ducts which are inclined toward the axis of the tool holder and which terminate in outlet ports in the end face. The radial bores are plugged at locations radially outwardly from the intersection of the ducts with the radial bores. Alternatively, liquid coolant may be carried through an annular manifold and directed radially inwardly into a plurality of arcuate, concave liquid distribution troughs located on the outer surface of the tool holder, and radially inwardly through the radial bores. Interior plugs within the tool holder force the liquid coolant into the inclined ducts. A removable end plate with diverting apertures may be fastened to the end face of the tool holder to divert liquid coolant onto a cutting tool with streams of liquid impinging thereon at selected angles.
An improved chuck for a cylindrical rotary tool for cutting away metal comprised of cylindrical, annular rotatable tool holder having a transverse end face in which an axial bore is defined to receive said cylindrical tool, a plurality of radial liquid distribution bores defined in said tool holder and tapped to receive plugs threadably engaged therein, a plurality of arcuate transverse, concave grooves defined in the outer surface of said tool holder, one at each of said radial bores and located remote from said end face, thereby defining a plurality of discontinuous, arcuate cooling liquid distribution troughs, a plurality of cooling liquid distribution ducts defined in said tool holder so as to intersect said radial liquid distribution bores proximate to said liquid distribution troughs at an inclination toward the axis of said tool holder so as to terminate in outlet ports in said end face, and wherein said outlet ports are located closer to the axis of said tool holder than are the intersections of said cooling liquid distribution ducts with said radial liquid distribution bores, and a central axial passageway remote from said transverse end face and intersecting said radial liquid distribution bores, and further characterized in that said radial bores are internally threaded between their intersections with said liquid distribution ducts and their intersections with said liquid distribution ducts and their intersections with said central, axial passageway, and further comprising plugs threadably engaged with said radial bores between their intersections with said liquid distribution ducts and their intersections with said central, axial passageway, and an annular cooling liquid distribution collar having a cooling liquid inlet and positioned about said tool holder and in sliding, contact therewith in communication with said cooling liquid distribution troughs, whereby said tool holder is rotatable within said annular collar, thereby defining a cooling liquid path of travel from said cooling liquid inlet, through said annular collar into said distribution troughs, radially inwardly into said radial bores and through said liquid distribution ducts to emerge from said end face.
An improved chuck for a cylindrical rotary tool for cutting away metal comprised of a cylindrical annular rotatable tool holder having a transverse end face in which an axial bore is defined to receive said cylindrical tool, a plurality of radial liquid distribution bores defined in said tool holder and tapped to receive plugs threadably engaged therein, a plurality of arcuate transverse, concave defined in the outer surface of said tool holder, one at each of said radial bores and located remote from said end face, thereby defining a plurality of discontinuous, arcuate cooling liquid distribution troughs, a plurality of cooling liquid distribution ducts defined in said tool holder so as to intersect said radial liquid distribution bores proximate to said liquid distribution troughs at an inclination toward the axis of said tool holder so as to terminate in outlet ports in said end face, and wherein said outlet ports are located closer to the axis of said tool holder than are the intersections of said cooling liquid distribution ducts with said radial liquid distribution bores, and a central, axial cooling liquid passageway remote from said transverse end face and intersecting said radial liquid distribution bores, and further characterized in that said radial bores are internally threaded at intersections with said liquid distribution troughs and at intersections with said axial passageway to thereby accommodate plugs threadably engaged with said radial bores at intersections of said radial bores with said liquid distribution troughs, and alternatively at said intersections of said radial bores with said axial passageway, thereby defining a cooling liquid path of travel radially through said bores to said plugs, and through said liquid distribution ducts to emerge from said end face alternatively from said central, axial cooling liquid passageway, and from said liquid distribution troughs.
An improved end mill chuck comprising:
An improved chuck for a cylindrical rotary tool for cutting away metal comprised of a cylindrical, annular rotatable tool holder having a transverse end face in which an axial bore is defined to receive said cylindrical tool, a plurality of radial liquid distribution bores defined in said tool holder remote from said end and adapted to receive plugs therein, a central axial cooling liquid passageway remote from said transverse end relative to said radial liquid distribution bores and intersecting said radial liquid distribution bores, a plug located in each of said radial liquid distribution bores, and a plurality of cooling liquid distribution ducts are defined in said tool holder so as to be linear throughout their lengths and spaced radially outwardly from said axial bore and so as to have ends that terminate remote from said transverse end and intersect said radial liquid distribution bores between said plugs and said central, axial cooling liquid passageway, and with opposite ends that terminate in outlet port means in said end spaced radially outwardly from said axial bore, and said outlet port means direct liquid coolant from said liquid distribution ducts at an inclined angle toward the axis of said axial bore.
Dependencies are inferred from the claim text.