Fluid-conduit Drill Holding Patents (Class 279/20)
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Patent number: 8066457Abstract: The invention relates to a machine tool, particularly a machine reamer, comprising a shaft-type base and a replaceable cutter head which frontally protrudes from the base. An axially protruding extension of said cutter head engages into a frontal receptacle that is fixed to the base, the cutter head being removably clamped in said receptacle by means of a clamping screw which penetrates the replaceable cutter head in a truly axial direction. The screw head of the clamping screw rests against a face of the replaceable cutter head. The extension of the replaceable cutter head is provided with a polygonal part which is complementary to a truly axial polygonal hole that is fixed to the base and is penetrated by the polygonal part.Type: GrantFiled: May 26, 2006Date of Patent: November 29, 2011Assignee: Komet Group GmbHInventors: Otto Buettiker, Roman Eigenmann, Jacek Kruszynski
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Publication number: 20110266756Abstract: The invention relates to a tool holder comprising a tool receptacle for frictionally clamping a tool shaft. A sleeve is arranged between the tool shaft and the clamping surface of the tool holder, said tool holder applying pressure to the tool shaft via the sleeve, producing the friction fit. At least one of the bearing surfaces of the sleeve is interrupted by open surfaces that are designed and arranged such that they form the damping cavities.Type: ApplicationFiled: August 11, 2009Publication date: November 3, 2011Applicant: FRANZ HAIMER MASCHINENBAU KGInventor: Franz Haimer
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Publication number: 20110169230Abstract: A chuck for a tool having an inner coolant channel, comprising a chuck body having a front part with an inner cone; an externally conical collet having a plurality of slots in a longitudinal direction thereof and engaging in the inner cone of the front part of the chuck body, a length adjusting means for the tool arranged so that the tool is bearable via an end surface against the length adjusting means, a coolant supply tube provided with a coolant supply channel extending into the length adjusting means so that the coolant supply tube discharges into the length adjusting means, a lock nut having a sleeve section extending over a front part of the chuck body and retained on the latter in an axially displaceable manner via a threaded connection and also connected to the collar in an axially displaceable manner, and at least one sealing means provided in a contact region selected from the group consisting of a contact region of the coolant supply channel, a contact region of the threaded connection, and a contType: ApplicationFiled: December 2, 2010Publication date: July 14, 2011Inventor: Gerhard Babel
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Publication number: 20110156363Abstract: The invention relates to a tool holding device comprising a tool holding body for securing, in a fixed manner, a rotary tool comprising a shaft, provided with a clamping section and a receiving opening for the shaft of the tool, a coolant feeding device for pressurized fluid, at least one coolant guiding device for guiding the coolant into a clamped tool shaft. The coolant guiding device is designed as at least one flat groove on an inner side of the receiving opening, joining to the front side on a free end of the tool holding body and directly adjacent to the tool shaft in the surroundings of the tool holding device or a coolant storing chamber and/or collecting chamber is provided in the region of the free end of the tool holding body, to which the at least one coolant guiding device joins. The coolant storing chamber and/or collecting chamber is connected by means of an annular gap to the surroundings of the tool holder device.Type: ApplicationFiled: August 18, 2009Publication date: June 30, 2011Applicant: FRANZ HAIMER MASCHINENBAU KGInventor: Franz Haimer
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Publication number: 20110085864Abstract: A tool holder assembly including a cutting tool and a tool holder. The cutting tool includes at least one fluid passage. The tool holder includes a conduit and a bore adapted to receive the cutting tool. An adapter or adapter portion may be provided that provides a fluid to one or more fluid passages in the cutting tool.Type: ApplicationFiled: December 17, 2010Publication date: April 14, 2011Applicant: FORD MOTOR COMPANYInventors: Alexander Stoll, Ed Exner, George Nordstrom
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Publication number: 20100270757Abstract: A tool holder includes an insert having an annular channel in fluid communication with an inlet. The insert mounts within a body that provides for rigidly mounting the tool to the machine. Coolant flow through the inlet and annular channel exits the insert through passages directing coolant fluid along the axis of the tool. The passages are annularly disposed about a face of the insert for directing coolant fluid along the tool.Type: ApplicationFiled: June 1, 2010Publication date: October 28, 2010Inventor: Kevin Beckington
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Publication number: 20100264608Abstract: A chuck assembly, an assembly for an earth-boring drill assembly, and a method of retaining a drill bit for an earth-boring drill assembly, the drill assembly including a casing. The assembly includes a drill bit having a generally cylindrical head, a chuck connectable to the casing and operable to support the bit, the chuck having an outer surface with a radially-outwardly extending chuck ridge, an axially-extending first slot being defined in the ridge, a sleeve having an inner surface with a radially-inwardly extending sleeve ridge engageable with the chuck ridge to limit axial movement of the sleeve relative to the chuck, the sleeve having a first lug supported on the inner surface, the first lug being positionable in the first slot to limit relative rotational movement between the sleeve and the chuck. The assembly may also include a retainer assembly provided between the sleeve and the bit.Type: ApplicationFiled: November 19, 2009Publication date: October 21, 2010Inventor: Dale Richard Wolfer
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Patent number: 7785046Abstract: A tool holder includes an insert having an annular channel in fluid communication with an inlet. The insert mounts within a body that provides for rigidly mounting the tool to the machine. Coolant flow through the inlet and annular channel exits the insert through passages directing coolant fluid along the axis of the tool. The passages are annularly disposed about a face of the insert for directing coolant fluid along the tool.Type: GrantFiled: December 7, 2006Date of Patent: August 31, 2010Assignee: Advanced IndustriesInventor: Kevin Beckington
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Publication number: 20100148454Abstract: An interface between a shank tool and a lubricant transfer area. The shank tool is arranged in a tool holder, and comprises a clamping section, a conical shank end and at least one internal lubricant duct comprising an orifice located in a tapered surface of the shank end outside a shank tool axis. The lubricant transfer area is provided in the tool holder, which encompasses an inner recess, and which narrows in the direction of a centrical lubricant feed pipe, the inner recess defining an inner cone supporting the conical shank end radially outside of the orifice. The conical shank end and the lubricant transfer area include a funnel-shaped lubricant transfer chamber, which extends between the centrical lubricant feed pipe and a tapered surface contact area between the inner cone of the lubricant transfer area and the conical shank end. Also, an adjustable screw for an interface as described above.Type: ApplicationFiled: December 11, 2008Publication date: June 17, 2010Inventor: Peter Haenle
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Patent number: 7731458Abstract: The invention concerns a clamping element of a coupling device for releasably but axially and rotationally fixing tool components for dry machining (MMS technology) and for wet machining. The element provides a friction-type connection between the components to be coupled. A cooling tube is arranged at the center of the coupling device. The spindle is provided with an elongated hole run through which cooling tube passes. A variable contour between the base body and the clamping segment enables an increase in distribution of forces for the support of the clamping segments. The novel geometry of the clamping segments results in novel contours in the base body with smoother transitions, hence a better force distribution, thereby reducing material breakage and a more reliable and robust clamping. By virtue of their novel geometry, the clamping segments have an increased surface enabling larger clamping screws to be used.Type: GrantFiled: January 21, 2009Date of Patent: June 8, 2010Inventor: Klaus Matheis
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Publication number: 20100066037Abstract: An axially adjustable tool holder, essentially constituted by a principal body (1) with attachment, in a recess (2) of which is slidably mounted a mobile part (3) for mounting a tool (4).Type: ApplicationFiled: September 11, 2009Publication date: March 18, 2010Inventors: Alain Freyermuth, Willy Heyd
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Publication number: 20100007101Abstract: A shank attachment structure which may supply coolant even if a drill without a center pin is attached. A shank can be attached to a shank attachment hole with a single motion. The outer diameter of the shank can be inserted into the shank attachment hole. A chamfered portion is formed around an edge of a base end, and an elongated concave portion is formed on a tip end. A coolant hole is formed on a base end of the shank attachment hole, and a valve body is disposed in the hole. A sealing member is disposed adjacent to the tip end side. A first sleeve is disposed such that a base of the shank moves the first sleeve, so that a base of the sleeve separates from the sealing member; and when the shank is not in contact with the tip, an outer peripheral surface of the first sleeve moves the engaging member radially outwardly.Type: ApplicationFiled: May 18, 2007Publication date: January 14, 2010Applicant: KABUSHIKI KAISHA MIYANAGAInventor: Masaaki Miyanaga
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Patent number: 7606285Abstract: A chuck device for electrical discharge machine includes a mold fixed to the machine and a connector connected to the discharge head. The connector has a connection rod having a neck and the connection rod is connected to the mold. A plurality of protrusions extend from the top of the connector and each protrusion has a groove which is defined by two facing inclined surfaces. The mold has a plurality of positioning bars fixed to an underside thereof and each positioning bar has a taper-shaped body with two inclined sides. The positioning bars are engaged with the grooves and the two inclined sides of the positioning bar are in contact with the inclined surfaces of the groove. A distance is defined between the flanges and a top of the protrusion.Type: GrantFiled: March 7, 2006Date of Patent: October 20, 2009Inventor: Chien-Chih Lin
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Patent number: 7537422Abstract: An adaptor (20, 76, 104, 106) secures a cutting head (16) to a tool holder (12, 14) having a passage for fluid. The adaptor (20, 76, 104, 106) has a corresponding passage (68, 94) for fluid to which a nozzle (22) is connected for the distribution of fluid towards a cutting region (54) of the cutting head (16).Type: GrantFiled: April 2, 2007Date of Patent: May 26, 2009Assignee: Iscar, Ltd.Inventors: Assaf Ballas, Carol Smilovici, David Feldman
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Patent number: 7500811Abstract: A collet chuck for retaining a thread cutting tool with a sleeve is axially movable in the interior and has a mechanism for retaining the thread cutting tool. To shorten the tool changing times it is provided that the mechanism for retaining the tool is an axially movable quick-change sleeve guided in the collet chuck or in the sleeve, which quick-change sleeve is developed such that it is stayed via a spring, axially with respect to the sleeve and a clamping body for clamping a tool is provided.Type: GrantFiled: February 21, 2006Date of Patent: March 10, 2009Assignee: Zettl GmbHInventor: Franz Pfob
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Patent number: 7422219Abstract: An interface of a tool is proposed with a first part serving as a seat having a female taper, which part has a first conduit section located concentrically to its center axis, a second part having a hollow shaft taper introduceable into the recess, which part has a second conduit section located concentrically to its center axis, where the center axes of the first and second parts align and having a collet chuck having two chuck jaws which comprises an actuating device coacting with the chuck jaws which can be activated by means of an actuating element. The characteristic feature of the interface is that the actuating device (43) has a caging element (47) which can be shifted to two operating positions and which has a central passage (71) which is located such that the center axes of the first and second parts (3, 5) pass through said passage.Type: GrantFiled: June 17, 2004Date of Patent: September 9, 2008Assignee: Mapal Fabrik fur Prazisionswerkzeuge Dr. Kress KGInventors: Dieter Kress, Friedrich Häberle
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Patent number: 7357607Abstract: A tool holder is provided that is configured to deliver coolant to a work piece and/or a cutting tool. The tool holder includes a tool mounting aperture for receiving a shank of a cutting tool, and an axially extending central passage for receiving coolant deliver though a spindle of a machine tool. The tool holder additionally includes several coolant passages located around the tool mounting aperture for conveying the coolant from the central passage and distributing the coolant to the work piece and cutting tool. The coolant passages extend substantially parallel to the tool mounting aperture and are slightly radially spaced from the tool mounting aperture.Type: GrantFiled: August 7, 2003Date of Patent: April 15, 2008Assignee: PV Engineering & Mfg., Inc.Inventor: Peter Vlismas
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Patent number: 7306238Abstract: An assembly generally comprises a collet for receiving a cutting tool shank and a lock nut for creating a gripping force between the collet and the cutting tool shank. The collet has a nose and the lock nut has a front face that is substantially flush with the nose. The lock nut further has a fastening element that mates with a fastening element of a coolant sealing ring for attaching the coolant sealing ring to the lock nut so that the coolant sealing ring may be detached from the lock nut.Type: GrantFiled: March 1, 2005Date of Patent: December 11, 2007Assignee: Kennametal Inc.Inventors: Robert E. Oshnock, Michael R. McCormick, Robert A. Erickson
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Patent number: 7244080Abstract: The present invention relates to a quick-change insert (10) for tools (11), in particular thread drills (12), for minimal lubrication, that is designed for detachable installation in a chuck (30) provided with a central lubricant channel (32) and for introducing the lubricant as an aerosol from the lubricant channel (32) into the rear end of a longitudinal bore (14) of an inserted tool (11). A sealing body (40) provided with a central passage (41) is located in a rear receptacle (25) of the insert body (17) such that, when the tool (11) is inserted and installed in the chuck (30), it connects the lubricant channel (32) and the longitudinal bore (14) of the tool (11) with each other in an at least substantially leakproof manner.Type: GrantFiled: January 19, 2005Date of Patent: July 17, 2007Assignee: Bilz Werkzeugfabrik GmbH & Co. KGInventors: Michael Voss, Gerhard Babel
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Patent number: 7241087Abstract: In a core bit formed with a boring blade at a front end thereof and integrally formed with a mounting portion, at a rear end portion thereof, formed with a guide portion in a cylindrical shape mounted to a chuck portion formed at a concrete drill, a ring-like seal member forming a seal between the mounting portion and a side of the chuck portion is formed at the guide portion in the cylindrical shape of the core bit.Type: GrantFiled: September 8, 2003Date of Patent: July 10, 2007Assignee: Max Co., Ltd.Inventors: Kigen Agehara, Michio Yamashita, Naohide Murakami
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Patent number: 7192228Abstract: The invention relates to a clamping chuck for a tool comprising a device for supplying a cooling agent and/or lubricants to a feeding channel of the tool maintained by the clamping chuck. The clamping chuck comprises a sleeve for coupling a feed pipe for supplying a cooling agent and/or lubricants, the sleeve provided with a tubular element and an adjusting screw which is arranged in such a way that it is displaceable with respect to the clamping chuck in the direction of the longitudinal axis thereof.Type: GrantFiled: August 22, 2005Date of Patent: March 20, 2007Inventors: Peter Häenle, Klaus Matheis, Dieter Gsänger
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Patent number: 7147410Abstract: A tool head for securing a tool in a machine tool has a stationary spindle bearing housing, a spindle rotatably supported in the spindle bearing housing, and a modular tool changing insert for receiving a tool. The tool changing insert is exchangeably arranged on the spindle or a holder. An internal cooling medium supply device supplies a cooling medium directly from the spindle bearing housing into the tool changing insert. The cooling medium supply device preferably supplies the cooling medium laterally into the tool changing insert via an auxiliary housing.Type: GrantFiled: February 6, 2003Date of Patent: December 12, 2006Assignee: WTO Werkzeug-Einrichtungen GmbHInventor: Karlheinz Jansen
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Patent number: 7144207Abstract: In a valve disposed between a fluid supply and a socket of a chuck and configured to regulate the flow of the fluid to the socket. There is a seal screw for modulating a preload tension. This seal screw has a first sealing surface. The valve further includes a second sealing surface in opposing relation to the first sealing surface and an elastomer seal ring disposed between the first sealing surface and the second sealing surface. The valve is configured to form a seal between the first sealing surface, the second sealing surface, and the elastomer seal in response to a force less than or equal to the preload tension being exerted in line with the seal screw. In this manner, the valve is configured to allow the flow of the fluid between the first sealing surface and the second sealing surface in response to a force exceeding the preload tension being exerted in line with the seal screw.Type: GrantFiled: July 29, 2003Date of Patent: December 5, 2006Assignee: The Boeing CompanyInventor: Matthew J. Weigel
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Patent number: 7134812Abstract: A coolant assembly for supplying coolant fluid to a tool includes an outer ring defining an inlet and an insert pressed within the outer ring including an annular channel. The annular channel is in communication with the inlet defined by the outer ring and includes a plurality of passages disposed to direct fluid along an axis of a tool. At least two of the passages are disposed at different angles relative to the axis of the tool to direct coolant along the entire length of the tool in order to provide a uniform and consistent stream of coolant and uniform and consistent temperature of the tool.Type: GrantFiled: July 17, 2002Date of Patent: November 14, 2006Inventor: Kevin Beckington
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Patent number: 6915722Abstract: This invention provides a clamping nut which prevents, at the time of rotation of the clamping nut, a fastening force that is imparted in the radial direction of the clamping nut towards the inside of the clamping nut, from operating on a converting part formed on the inner surface of the clamping nut, thereby enhancing rotation efficiency and making it possible to securely clamp a clamp object member. This invention also provides a tool holder with the above-described clamping nut, and a spanner for the fastening of the clamping nut. The clamping nut has an annular groove which takes the form of an annular shape over its outer surface in at least a section of the area on its outer surface that corresponds to a female screw, and which will not come in contact with the spanner.Type: GrantFiled: December 19, 2002Date of Patent: July 12, 2005Assignee: Big Alpha Co., Inc.Inventor: Tsuyoshi Komine
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Publication number: 20040164501Abstract: A pot-shaped chuck, which is designed to cooperate with a percussion mechanism (2) of a percussion power tool (3) and an empty space of which is open at a working tool side of the chuck for receiving a working percussion tool (5), includes guide elements (4) coaxial with a percussion axis (A) and in which the working tool (5) is received for joint rotation with the chuck (1) and for a limited axial displacement relative thereto, and a flushing liquid conduit (6) extending along an inner surface (7) forming the pot empty space of the chuck (1).Type: ApplicationFiled: December 4, 2003Publication date: August 26, 2004Inventor: Stefan Gotzfried
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Patent number: 6746023Abstract: The present invention provides a collet capable of efficiently supplying a cooling fluid such as a cutting fluid to a tool and thereby realizing satisfactory cooling by adjusting the flow velocity of the cooling fluid according to the diameter of the tool held by the collet. The collet comprises: a collet body for inserting the shank of the tool, a slot formed at least from the tool insertion side, and a weir member inserted into the slot. The weir member extends from a position recessed from the inner surface of the collet body in a direction closer to the outer surface of the collet body and reaches the outer surface thereof, and a gap S through which the fluid can flow is formed between the weir member and the inner surface of the collet body.Type: GrantFiled: June 18, 2002Date of Patent: June 8, 2004Assignee: Big Alpha Co., Inc.Inventor: Tsuyoshi Komine
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Patent number: 6729627Abstract: The present invention provides a capped collet and a cap attached to the collet, which are capable of efficiently supplying a cooling fluid to a tool according to the type of the tool held therein, and of performing satisfactory cooling. The capped collet comprises: a collet body 10; a cap 11 which is attached to the top-end side of the collet body 10 in an attachable and detachable manner and which allows the tool to pierce therethrough; and a sealing member 12 placed between a tool holder 101 and the cap 11 in order to hermetically seal a space between them. The collet body 10 has a slot 13 formed at least from the top-end side thereof, and an annular projection 21 which is formed on the top-end side and which is coupled with the cap 11. The cap 1 has an annular groove 18 for coupling with the annular projection 21 of the collet body 10, and a cover 22 for covering the end face of the collet body 10 on the top-end side.Type: GrantFiled: January 29, 2002Date of Patent: May 4, 2004Assignee: Big Alpha Co., Inc.Inventors: Tsuyoshi Komine, Haruaki Kubo
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Patent number: 6726412Abstract: A tool holder for machine tool capable of surely preventing the cutting fluid oil, fed into a passage through-hole (e) in a tool holder main body (1), from leaking the connection part between a cutter (10) and the tool holder during the machining of a workpiece; the cutter used in the tool holder; and a tool driver used in the tool holder; the tool holder for machine tool, comprising the passage through-hole (e) at the rotating center part (x) of the holder main body (1), allowing the cutter (10) having a cutting fluid path (e5) formed therein to be inserted into the front part of the passage through-hole (e), and being formed so that the cutter (10) is fixed by a fixing means (3) fitted to the tip of the holder main body (1), wherein a cylindrical female surface part for sealing (10b) is formed at the rear end part of the cutter (10), a cylindrical female surface part for sealing (e3a) allowing the cylindrical male surface part for sealing (10b) to be inserted closely therein is formed in the passage throughType: GrantFiled: September 25, 2002Date of Patent: April 27, 2004Assignee: Horkos Corp.Inventors: Shinsuke Sugata, Tadashi Makiyama
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Patent number: 6601857Abstract: A seal assembly for a toolholder with a collet clamping member having a forcing ring in which at least in part the clamping member can be positioned, and a seal ring with a tool insertion opening including a surrounding O-ring holder that can be removably engaged with the forcing ring to place this seal ring in a selected position therein. An O-ring is provided in the seal ring O-ring holder.Type: GrantFiled: August 21, 2001Date of Patent: August 5, 2003Inventor: Daryl E. Richmond
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Patent number: 6497765Abstract: An improved chuck for supporting elongated work pieces having conical end portions, such as single crystal ingots used to fabricate semiconductor wafers, while such. The chuck is typically used in a lathe for positioning and allowing rotation of the work piece during a grinding procedure that results in optimal work piece diameter. The chuck comprises a ring-shaped base, or socket, having a cavity defining a central axis therethrough and a series of fastener holes for securing the base to a headstock or tailstock of a lathe. The base receives within the cavity a portion of a chuck insert. The chuck insert defines a work piece support surface that is coaxial with the central axis when the chuck insert is disposed in a nominal position within the cavity of the base. The work piece support surface will typically define a continuous, arcuate, convex surface capable of supporting work pieces having conical end portions of varying diameters.Type: GrantFiled: June 7, 2000Date of Patent: December 24, 2002Assignee: SEH America, Inc.Inventor: Travis S. Nice
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Publication number: 20020145260Abstract: The present invention provides a capped collet and a cap attached to the collet, which are capable of efficiently supplying a cooling fluid to a tool according to the type of the tool held therein, and of performing satisfactory cooling. The capped collet comprises: a collet body 10; a cap 11 which is attached to the top-end side of the collet body 10 in an attachable and detachable manner and which allows the tool to pierce therethrough; and a sealing member 12 placed between a tool holder 101 and the cap 11 in order to hermetically seal a space between them. The collet body 10 has a slot 13 formed at least from the top-end side thereof, and an annular projection 21 which is formed on the top-end side and which is coupled with the cap 11. The cap 1 has an annular groove 18 for coupling with the annular projection 21 of the collet body 10, and a cover 22 for covering the end face of the collet body 10 on the top-end side.Type: ApplicationFiled: January 29, 2002Publication date: October 10, 2002Applicant: Big Alpha Co. Inc.Inventors: Tsuyoshi Komine, Haruaki Kubo
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Patent number: 6448528Abstract: A pipe electrode holder for holding an elongated pipe electrode (6) having a relatively small diameter, the pipe electrode holder being coaxially attached to a rotating spindle (7) of a small hole electric discharge machine. The pipe electrode holder has a cylinder capable of fitting into the rotating spindle, the cylinder having a threaded upper end and a through hole (1a), and a collet (2) for gripping the pipe electrode having a through hole (2a) through which the pipe electrode may pass, the collet being fit into the through hole of the cylinder. A holder head (5) capable of adjusting the gripping force of the collet is not screwed to the lower end of the cylinder from which the pipe electrode extends, but to the threaded upper end of the cylinder.Type: GrantFiled: December 21, 2000Date of Patent: September 10, 2002Assignee: Sodick Co., Ltd.Inventor: Shigeru Yoshida
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Patent number: 6305696Abstract: The tool holder for machine tool includes grip 10a on an outer circumference held on an automatic exchange of a cutting edge 8. A through hole 10b is in the longitudinal center. An internal thread (g) is on one end of through hole 10b, and a tool stopper 11 is screwed on internal thread (g). A through hole 11a is in the longitudinal center of tool stopper 11. A conical engaging body 10c is on the other end of through hole 10b, so that conical engaging body 10c protrudes outwards. The conical engaging body 11c connects with a tool shank taper (n) and a flanged end face (m) of a main spindle. A mist receiving tube 12 is on a connecting side of through hole 10b, and a through hole 12a is in the longitudinal center of the mist receiving tube 12. A communicating tube 14 is in the through hole 12a of mist receiving tube 12 and through hole 11a of tool stopper 11, so that communicating tube 14 bridges them to flow cutting oil directly thereinside.Type: GrantFiled: February 17, 2000Date of Patent: October 23, 2001Assignee: Horkos CorporationInventors: Shinsuke Sugata, Takashi Kobayashi
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Patent number: 6210083Abstract: A method for supplying the working parts of a cutting tool with a lubricant which both cools and lubricates the cutting tool. A dispenser is connected directly or indirectly to the cutting tool to enable lubricant to be fed to the working parts of the cutting tool through at least one channel in the cutting tool. A cutting tool is also disclosed with a shaft, a cutter, at least one internal lubricant channel and at least one reservoir being fitted as a dispenser for the lubricant. The reservoir is directly or indirectly connected to the cutting tool by mechanical connections and to the at least one lubricant channel to permit the passage of lubricant. In addition, a tool holder designed to hold the cutting tool is disclosed. The tool holder has an internal dispenser for the lubricant. The dispenser is connected, when the cutting tool is fixed in place, to the at least one lubricant channel in the cutting tool to permit the passage of lubricant.Type: GrantFiled: February 11, 2000Date of Patent: April 3, 2001Inventors: Dirk Kammermeier, Bernhard Borschert
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Patent number: 6135679Abstract: A thread-cutting chuck for use with minimum amounts of lubrication includes an axially central lubricant channel for connecting an insert sleeve for reception of a collet chuck, especially a quick-change insert, which accommodates a screw tap provided with a longitudinal borehole, with a minimum lubrication source on the machine side, from which the lubricant is passed as an aerosol to the longitudinal borehole of the screw tap. An axially displaceable coolant pipe which brings about a direct connection with the longitudinal borehole of the screw tap is provided in the lubricant channel extending into the junction region leading into the insert sleeve.Type: GrantFiled: May 5, 1999Date of Patent: October 24, 2000Assignee: Emuge-Werk Richard Glimpel Fabrikfuer Praezisionswerkzeuge vormals Moschkau & GlimpelInventor: Thomas Kazda
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Patent number: 6116825Abstract: A method for supplying the working parts of a boring tool, in particular a drill, with a lubricant which both cools and lubricates the drill. A dispenser is connected directly or indirectly to the drill to enable lubricant to be fed to the working parts of the drill through at least one channel in the drill. A boring tool, in particular a drill, is also disclosed with a shaft, a cutter, at least one internal lubricant channel and at least one reservoir being fitted as a dispenser for the lubricant. The reservoir is directly or indirectly connected to the drill by mechanical connections and to the at least one lubricant channel to permit the passage of lubricant. In addition, a tool holder designed to hold the drill is disclosed. The tool holder has an internal dispenser for the lubricant. The dispenser is connected, when the drill is fixed in place, to the at least one lubricant channel in the drill to permit the passage of lubricant.Type: GrantFiled: February 6, 1998Date of Patent: September 12, 2000Assignee: Kennametal Hertel AG Werkzeuge + HartstoffeInventors: Dirk Kammermeier, Bernhard Borschert
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Patent number: 6086292Abstract: A drilling apparatus capable of removing drill chips from a workpiece under vacuum. The drilling apparatus includes an elongated drill having a body and a shank. The body has an axial through hole to receive drill chips. The shank has a plurality of radial holes communicated with the axial holes of the body. A vacuum adapter is hermetically placed around the shank and includes a cylindrical hollow body. The hollow body of the adapter includes a radial through port. The radial through port has one end communicated with the radial holes and the other end communicated with an external source of vacuum through a vacuum hose. A cylindrical extension unitarily extends from one end of the hollow body of the adapter and includes an annular projection. The shank has a corresponding annular groove to lockingly receive the annular projection in order to lock the adapter against axial displacement relative to the drill.Type: GrantFiled: November 27, 1998Date of Patent: July 11, 2000Assignee: Unika Co., Ltd.Inventor: Yosihiro Yokoyama
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Patent number: 6059296Abstract: A chuck for a rotatable tool, such as a drill, a screw tap and the like has a chuck sleeve receivable in a machine and having a central receptacle, a sleeve provided for a tool and releasably inserted in the receptacle, the sleeve having a central main passage for a cooling and/or lubricating medium and grooves for supplying the cooling and/or lubricating medium in a longitudinal direction and outwardly of the tool, the sleeve having an axial opening adopted to extend over a whole length of a shaft of the tool for holding the shaft, the grooves for the cooling and/or lubricating medium in the sleeve being provided on an inner side of the axial opening and extending axially over a whole length of the sleeve, the grooves at one end communicating with the central passage in the chuck sleeve and at another end being axially freely open.Type: GrantFiled: March 23, 1999Date of Patent: May 9, 2000Assignee: Otto Bilz, Werkzeugfabrik GmbH & Co.Inventor: Siegfried Baeder
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Patent number: 5984595Abstract: A tool holder having a holder body, a collet, an intermediate rod, a clamp bolt and a pull stud. The collet and the intermediate rod are integrally connected by screwing. A spacer is mounted to the front end of the holder body and has an opening hole with a diameter nearly matching with the diameter of the shank portion of the cutting tool. In the opening hole, a tapered groove portion with an enlarged diameter portion on the rear and a reduced diameter portion on the front is formed, and in this groove portion, a sealing O-ring is mounted. A cap for holding the spacer is screwed down to the front portion of the holder body, and the cap and the holder body come in pressure-contact at each other's tapered surfaces.Type: GrantFiled: July 14, 1998Date of Patent: November 16, 1999Assignee: MST CorporationInventor: Haruki Mizoguchi
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Patent number: 5975817Abstract: The present invention provides a tool holder which realizes an improved applicability to tools with different diameters and attains high sealability and is capable of efficiently supplying a fluid at a predetermined position even when a fluid of high pressure is supplied. The tool holder comprises: an engaging member 4 provided on the top end side of a tool holding portion of a holder body 2 and comprising an inclined face 15 constructed in a manner such that the inside diameter becomes smaller toward the top end of the tool 10 held by the holder body 2; and an elastic member 5 as a stopper provided between the inclined face 15 and the outside periphery of the tool 10.Type: GrantFiled: April 10, 1998Date of Patent: November 2, 1999Assignee: Big Alpha Co., Ltd.Inventor: Tsuyoshi Komine
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Patent number: 5954347Abstract: A tool holder and an associated tool with the shank are provided for a drilling and/or striking machine tool. The tool holder has a drive spindle with a receiving opening provided with a cone for centering and a portion for driving the tool. Dumbbell-shaped locking elements are guided with their inner ends in a passage and with their outer ends in a longitudinal groove. The outer ends engage in pockets in an axially displacable locking sleeve which is prestressed by a spring in the direction toward its locking position.Type: GrantFiled: August 21, 1997Date of Patent: September 21, 1999Assignee: Robert Bosch GmbHInventors: Manfred Buck, Siegfried Fehrle, Bernd Koelle
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Patent number: 5947657Abstract: A drill jig assembly for accurately supporting a drill relative to a workpiece is provided that includes a drill having a cylindrical shank, a chuck having a cylindrical exterior, and a hydraulically-operated collet for detachably gripping the drill shank, a housing tube for slidably and rotatably supporting the cylindrical exterior of the chuck, and a drill guide mounted on the distal end of the housing tube. The drill guide is formed from a carbide bushing having a pilot bore for rotatably receiving the cylindrical shank of the drill and maintaining a pilot concentric alignment between the bushing and the shank during a drilling operation. The use of hydraulic chuck in combination with the pilot bore of the carbide bushing allows the drill to accurately bore holes in a workpiece to very tight tolerances in a one-step, extend and retract drilling operation.Type: GrantFiled: August 14, 1998Date of Patent: September 7, 1999Assignee: Kennametal Inc.Inventors: Steve P. Lipohar, William C. Magill, William B. Tunis
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Patent number: 5906378Abstract: A coupling adapter (1) for positioning a tool (90) in a particular given position with high repetitive precision on a chuck (80) that can be activated by a medium for a machine tool. The chuck (80) is equipped with elements (52, 54, 82, 55, 57, 58) of a first holding system and the tool (90) with elements of a second holding system, with a pressure-medium source that is controlled by a central control device and connected to the chuck (80) through a first medium channel (81) provided in the machine tool. The coupling adapter (1) is provided on a first end face with counter-elements (52, 54, 55, 56, 57, 58) of the first holding system and on a second end face (29) with counter-elements of the second holding system and has a device on the chuck (80) for clamping depending on the medium pressure and a holding device for the tool (90).Type: GrantFiled: March 5, 1997Date of Patent: May 25, 1999Assignee: System 3R International ABInventor: B. Hakon Nordquist
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Patent number: 5904451Abstract: A clamping device has a collet or a sleeve that contains an inner coolant supply. The non-through parts of the clamping device have formed therein radial slits and/or intermediate slits that open at the machine side and/or the tool side of the shank of the device. The slits and non-through parts of the device are arranged in such a way that they form a coolant barrier.Type: GrantFiled: July 14, 1995Date of Patent: May 18, 1999Assignee: Regofix AGInventor: Ernst Gerber
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Patent number: 5890849Abstract: The invention therefore provides a tool holder for tools supplied with coolant or lubricant, especially rotating tools such as boring or milling tools, with an internal duct system for passing coolant or lubricant to the shank of the tool. To enable particularly flexible use of machine tools, the tool holder is equipped according to the invention with a lubricant reservoir which is integrated into the tool holder and which is preferably fillable and pressurizable, which during operation of the tool can be decoupled from a coolant or lubricant source and supplies the tool controllably with coolant and lubricant via a metering unit.Type: GrantFiled: March 18, 1998Date of Patent: April 6, 1999Assignee: Gottlieb Guehring KGInventor: Tibor Cselle
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Patent number: 5758995Abstract: A spindle head for tools with interior coolant feed can be inserted in a tool face with receiving and holding bores. A tensioning device for the spindle carries the shaft of the tool and is mounted rotatably in the spindle head housing by a spindle end segment. A coolant conduit is located in a spindle head cover on the tool side and above the spindle mounting. An annular groove open toward the spindle end segment is provided in the spindle head cover. A coolant feed passage opens into the annular groove. The end segment of the spindle has a connecting passage with one end opening in the annular zone of the outer surface of the end segment aligned with the annular groove and with another end opening in a chamber of the spindle. An inlet opening of the coolant passage in the shaft end of the tool is connected with the chamber. The annular groove is sealed on the outside by an exterior gap tightening and on the inside from the spindle mounting by an interior gap tightening.Type: GrantFiled: April 24, 1996Date of Patent: June 2, 1998Assignee: Sauter Feinmechanik GmbHInventor: Detlef Dieter Sahm
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Patent number: 5752706Abstract: A tool holder for machine tools which provides for both angular and radial alignment of the tool with respect to the working axis of the machine. A tool chuck is part of a ball and socket unit, with the ball being pivotable within the socket for angular alignment of the tool chuck and tool carried therein. The base of the socket member is movably carried within a cup-shaped housing of a base member which allows for adjustment in the vertical plane and radial alignment.Type: GrantFiled: July 18, 1996Date of Patent: May 19, 1998Inventor: Lyndon W. Hodges
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Patent number: 5702211Abstract: A tool holder includes a body with a central internal threaded section, and a coolant coupling device within the tool holder. The coolant coupling device includes a threaded body section to engage the internal threads of the tool holder, a smaller diameter nose section, and a coolant passage through the device to align with a coolant passage in a cutting tool. A sealing ring around the end of the coolant passage forms a seal when the coolant coupling device abuts against a tool shank. The body section includes a wrench slot by which to turn the device for axial movement within the tool holder.Type: GrantFiled: June 3, 1996Date of Patent: December 30, 1997Inventors: David J. Roemer, Scott Johnson
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Patent number: RE37484Abstract: A clamping device has a collet or a sleeve that contains an inner coolant supply. The non-through parts of the clamping device have formed therein radial slits and/or intermediate slits that open at the machine side and/or the tool side of the shank of the device. The slits and non-through parts of the device are arranged in such a way that they form a coolant barrier.Type: GrantFiled: October 20, 1999Date of Patent: December 25, 2001Assignee: Rego-Fix AGInventor: Ernst Gerber