To Move Eccentrically Mounted Tool Patents (Class 408/150)
  • Patent number: 9999928
    Abstract: A setting system (20) for a tool (10) is described, and in particular for a rotary metal working tool, wherein the setting system (20) aligns at least one insert (14) of the tool (10). The setting system (20) comprises an adjusting unit (22), which cooperates with the insert (14), and actuating device (24), which includes at least one electric actuator (26) exerting an adjusting force on the adjusting unit (22). Furthermore, a tool (10) is described.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: June 19, 2018
    Assignee: KENNAMETAL INC.
    Inventors: Marcus Paul, Tilo Krieg
  • Patent number: 8641335
    Abstract: An apparatus for forming recesses on a circumferential surface that defines a cylindrical bore in a workpiece includes a tool holder disposed coaxially with the cylindrical bore; a form roller support retained on the tool holder; a form roller rotatably supported on the form roller support, the form roller including projections on an outer circumferential surface thereof which are configured to form the recesses on the circumferential surface that defines the cylindrical bore in the workpiece. A control assembly is configured to control the form roller support such that the form roller is allowed to be in press contact with the circumferential surface that defines the cylindrical bore in the workpiece at a press contact load of a predetermined value on the basis of a centrifugal force which is exerted on the form roller support and the form roller during rotation of the tool holder.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: February 4, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kazuhiko Takashima, Yoshitaka Uehara, Minoru Ota
  • Publication number: 20130115019
    Abstract: A pressure medium controlled counterbore tool with one or multiple cutters for metal cutting, which can be actuated in their swivel position by supplying a pressure medium, wherein the actuation of at least one cutter is performed by at least one cutter by means of at least one piston-cylinder unit actuated by the pressure medium.
    Type: Application
    Filed: October 29, 2012
    Publication date: May 9, 2013
    Inventor: Ulf Heule
  • Patent number: 7328637
    Abstract: An apparatus for machining a circumferential surface defining a cylindrical bore of a workpiece, the apparatus including a tool holder rotatable about a first rotation axis, and a form roller supported on the tool holder so as to be rotatable about a second rotation axis parallel to a central axis of the cylindrical bore of the workpiece. The form roller has a diameter smaller than a diameter of the cylindrical bore of the workpiece and is adapted for forming a plurality of microscopic recesses on the circumferential surface defining the cylindrical bore of the workpiece.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: February 12, 2008
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kazuhiko Takashima, Tatsuomi Nakayama, Minoru Ota, Manabu Wakuda
  • Patent number: 7048482
    Abstract: The transmission of the rotational movement to the driving pinion of the carriage is provided by: a first gear train with a cage mounted so that it can rotate about the axial shaft and the crown wheel of which meshes with a pinion fitted onto the shaft of an electric motor carried by the body, this train carrying at least two superposed planet pinions and meshing, in the case of the upper one, with a set of teeth formed around the axial shaft and, in the case of the lower one, with an output sun gear, a second train, the sun gear of which is secured to the output sun gear of the first train and meshes with the upper planet pinion of at least one set of superposed planet pinions which are mounted so that they are free to rotate in a continuation of the body, the lower planet pinion meshing with a set of teeth which, formed on the driving pinion of the carriage, is distinct from the set of teeth that collaborates with the rack of this carriage, these two sun gears having ratios which are other than 1 and in
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: May 23, 2006
    Assignee: Machines Serdi
    Inventors: Philippe Gruber, Renaud Viellard
  • Patent number: 6579046
    Abstract: The invention involves a tool head 10, which can be rotated around an axis of rotation 24, with a tool-holding fixture 14, 16 for a tool 20 having a cutting edge 18 and with equipment 38, 40, 44 for adjustment of the radial position of the tool cutting edge 18 with regard to the axis of rotation 24. The invention distinguishes itself by the fact that the tool-holding fixture is divided up into a base element 14, which is supported in a first bearing system 40 in a carrier sleeve 44 so as to be able to rotate around the axis of rotation 24, and a tool-holding element 16, which is supported in a second bearing system 38 in the carrier sleeve 44 so as to be able to rotate around an eccentric axis 42 that is positioned in an eccentric fashion, as well as in parallel to, the axis of rotation 24.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: June 17, 2003
    Assignee: Samson Aktiengesellschaft
    Inventors: Dieter Eysel, Hartmut Hirt
  • Patent number: 6554549
    Abstract: A tool having a base body which carries cutters for machining bores in a workpiece, the cutters being arranged coaxially with one another. The base body further has at least one lifting element, with which the base body can be moved from an eccentric position in relation to an axis of the workpiece bores into a central position, in which the axis of the tool coincides with the axis of the workpiece bores.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: April 29, 2003
    Assignee: Mapel Fabrik fur Prazisionswerkzeuge Dr. Kress KG
    Inventor: Artur Kurz
  • Patent number: 6345937
    Abstract: A tool for cutting machining a workpiece, including a cutter plate supported on a holder for machining a surface and additionally comprising a tool projecting from the body of the tool. The cutter plate is supported on a holder which is in turn supported on a rotatable eccentric such that rotation of the eccentric moves the holder radially. A cooperating converting device converts axial movement of an actuating device into rotation of the eccentric through intermeshing gear elements. A second tool, e.g., a reamer, is moved by a second push/pull rod axially with respect to the body of the tool and into the workpiece, and the second tool is supported on the axis of the main body.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: February 12, 2002
    Assignee: Mapal Fabrik für Präzisionswerkzeuge
    Inventors: Dieter Kress, Herbert Jäger
  • Patent number: 6343899
    Abstract: There is disclosed a machine tool for machining bores having a large axial length and a boring tool especially suited for a machine tool of this kind in which a boring bar holding at least one tool lip is supported by a steady adapted to be connected to the boring bar 28 via a coupling 48. By the steady the radial excursion of the boring bar during the machining process is reduced to a minimum.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: February 5, 2002
    Assignee: Ex-Cell-O-GmbH
    Inventors: Hans Straub, Peter Henzler, Heinz Barthold
  • Publication number: 20020001512
    Abstract: The invention involves a tool head 10, which can be rotated around an axis of rotation 24, with a tool-holding fixture 14, 16 for a tool 20 having a cutting edge 18 and with equipment 38, 40, 44 for adjustment of the radial position of the tool cutting edge 18 with regard to the axis of rotation 24. The invention distinguishes itself by the fact that the tool-holding fixture is divided up into a base element 14, which is supported in a first bearing system 40 in a carrier sleeve 44 so as to be able to rotate around the axis of rotation 24, and a tool-holding element 16, which is supported in a second bearing system 38 in the carrier sleeve 44 so as to be able to rotate around an eccentric axis 42 that is positioned in an eccentric fashion, as well as in parallel to, the axis of rotation 24.
    Type: Application
    Filed: April 27, 2001
    Publication date: January 3, 2002
    Inventors: Dieter Eysel, Hartmut Hirt
  • Patent number: 6041485
    Abstract: A novel system and method for anchoring a suture or other cord-like element to a bone or other workpiece. The system comprises a drill for forming an undercut hole in a bone or other workpiece, an anchor for securing a suture or other cord-like element in the undercut hole in the bone or other workpiece, and an inserter for deploying the anchor in the undercut hole in the bone or other workpiece.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: March 28, 2000
    Inventors: Jack S. Pedlick, Felmont F. Eaves, III, Vincent C. Biondo
  • Patent number: 5971678
    Abstract: An apparatus for machining a hole in a work piece includes a spindle motor that is rotatable about a principal axis. The spindle motor includes a tool holder having a tool axis substantially parallel to the principal axis. The tool holder is rotatable about the tool axis. An axial actuator is configured for moving the spindle motor in an axial feed direction substantially parallel to each of the principal axis and the tool axis. A radial actuator is configured for adjusting a radial distance between the principal axis and the tool axis.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: October 26, 1999
    Assignee: Novator AB
    Inventor: Dag G. Linderholm
  • Patent number: 5957632
    Abstract: A tool position correcting device comprises a draw bar supported for axial movement in a central bore of a spindle of a machine tool, a tool holder supported for turning about an eccentric axis displaced from the axis of rotation of the spindle on the nose of the spindle, and a motion converting mechanism operatively interlocking the draw bar and the tool holder to convert the axial motion of the draw bar into the rotational motion of the eccentric rotary member.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: September 28, 1999
    Assignee: Howa Machinery, Ltd.
    Inventors: Tetsuya Oketani, Masahiro Yoshida, Hideo Uemura
  • Patent number: 5647702
    Abstract: A bowling ball drilling apparatus for drilling variable size holes includes a table having an upwardly opening ball supporting pocket. A boring apparatus is mounted below the table for reciprocation in a generally vertical direction in a path intersecting the pocket. A carriage moves the boring apparatus in the path. The boring apparatus has an output shaft rotatable about a vertical axis. An adjustable boring head is connected to the output shaft for rotation therewith, the boring head receiving a boring tool and being variable adjusted to offset the boring tool horizontally relative to the vertical axis so that the boring tool orbits about the vertical axis to produce a variable size hole in the bowling ball dependent on an amount of the offset.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: July 15, 1997
    Assignee: Brunswick Bowling & Billiards Corporation
    Inventors: Bill Eugene Towers, Ladislav Jurik, Richard Larry Weinbrenner
  • Patent number: 5609449
    Abstract: The length of a drilling cycle in a bowling ball fitting and drilling method is reduced in an apparatus including a fitting apparatus (10) usable by a bowler to determine the size of a thumb hole and at least one finger hole to be drilled in a bowling ball and including a drilling apparatus (14) having a ball support (22), a rotatable drilling tool (30) movable relative thereto and a drive (36) for the drilling tool (30). A dove tail slide connection (50), (52) provides for moving the drilling tool (30) in an orbital path and an adjustment mechanism (56), (58), (60), (62), (70), (84) is provided whereby the diameter of the orbital path may be varied to vary the diameter of a hole drilled in the ball. A control motor (122) is responsive to the fitting apparatus (10) to operate the adjusting mechanism (56), (58), (60), (62), (70), (84). The control motor 122 is carried by the drive (36) and thus, may be adjusted "on the fly".
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: March 11, 1997
    Inventors: Bill E. Towers, Ladislav Jurik, Richard L. Weinbrenner
  • Patent number: 5597276
    Abstract: An apparatus is provided to allow a conventional tube grooving tool to be used to create a vent hole in a tube behind the tube sheet of a boiler or other tubular heat exchanger without cutting a hole or grove in the entire circumference of the tube. The apparatus includes an eccentric or a canted guide that is positioned within the end of the tube to guide the tool holder having a grove cutting tool mounted on it. The guide offsets the tool holder and the cutting tool from the centerline of the tube so that the cutting tool only cuts into a portion of the inside surface of the tube.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: January 28, 1997
    Inventor: Stanley Yokell
  • Patent number: 5533847
    Abstract: In known tool holders only a single screw is used to compensate for axiality faults which exist. It is true that this is a simple construction, but it is not adequate for sensitive compensation of axiality faults requiring attention, particularly in fine drilling. According to the invention this is achieved in the case of the invention by using a tangential tension screw 73 to move towards one another the two sectors 78, 79 of a compensator ring 13, so that the adapter 14 can be sensitively moved into a position in which the geometrical longitudinal axis 17 of the tool 93 becomes coaxial to the spindle axis.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: July 9, 1996
    Inventor: Andreas Basteck
  • Patent number: 5431513
    Abstract: An adjustable boring bar assembly is provided in which the cutting radius can be altered by predetermined increments simply by releasing and turning the bar within a sleeve of a hydraulic holder. The holder sleeve is slightly eccentrically located relative to the spindle axis, so that turning of the bar effectively changes the working radius of the cutting point. Slots on the holder, arrayed about the sleeve, are located at discrete angular positions to produce the desired radial increments. A pin on the boring bar disengages from one slot and re seats in another when the bar is released, withdrawn, turned, reinserted and re-gripped.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: July 11, 1995
    Assignee: General Motors Corporation
    Inventors: John S. Agapiou, Robert B. Trent, Craig R. Brooks
  • Patent number: 5259706
    Abstract: A threading tool for repairing, in situ, threads within a bore of a head of an internal combustion engine without the danger of particulate waste falling into the engine housing. The threading tool can be used separately or in combination with a reaming tool for deburring, in situ, rough edges generally at the crest of threads within a bore of a head of an internal combustion engine without the danger of particulate waste falling into the engine housing.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: November 9, 1993
    Inventor: Eugene Gaut
  • Patent number: 5180209
    Abstract: Recessed grooves are cut into bore hole walls of concrete or rock materials for the purpose of interconnecting two components of such materials at an interface between these components. These recessed grooves are cut by material removing tools which can be pressed radially outwardly, while a drive shaft simultaneously rotates these tools. For this purpose, an axial movement of an adjustment body is converted into a tilting movement of pivotable shafts which carry the material removable tools, whereby the adjustment body is moved linearly by a hydraulic lifting device. The material removing tools extend radially away from the lower ends of the pivotable shaft. The common adjustment movement of all of the pivotable shafts takes place independently of the rotation of the driven shaft.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: January 19, 1993
    Assignee: Hydrostress AG
    Inventor: Hans Bieri
  • Patent number: 5061125
    Abstract: A boring device adapted to mount boring tools for automatic tool changing, in which an eccentric mounting of relatively rotatable inner spindle 11 and main spindle (2) allows radial adjustment of the tool. Relative rotation of inner and outer spindles is accomplished by axial driving of a threaded bolt (22) by an actuator motor (67), causing rotation of a nut (19) fixed to the inner spindle (11). Continued overtravel of the threaded bolt (22) past an adjustment range (47) and safety range (51) causes releasing operation of a spring biased pull rod (36) which releases a tool clamping mechanism (14) to allow automatic tool changing.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: October 29, 1991
    Assignee: Cross Europa-Werk, GmbH
    Inventor: Eugen Kuppinger
  • Patent number: 5036928
    Abstract: A device for drilling an undercut in a borehole in a receiving material comprises an axially extending guide sleeve with an eccentric bore and an eccentric bushing located in the eccentric bore and being rotatable therein relative to the sleeve. A tension spring is located between the sleeve and the bushing. During rotation of the bushing, relative to the sleeve, the torsion spring is stressed. A drive shaft with a cutter head at one end extends through the bushing and is brought into an eccentric position relative to the sleeve and at the same time commences an undercut in the borehole. A lock is provided with a set of teeth on the sleeve preventing rotation of the sleeve with the bushing. When the maximum eccentricity of the drive shaft is established, the lock can be released and the sleeve rotated along with the bushing by an eccentric transmission. During such rotation, a complete circumferentially extending undercut can be formed in the borehole.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: August 6, 1991
    Assignee: Hilti Aktiengesellschaft
    Inventor: Fritz Mark
  • Patent number: 5033918
    Abstract: A fine adjustment device for turning tool bits in the form of a pneumatic/hydraulic converter for converting of control signals into proportional actuating or adjusting forces with a combination of an oil pump and pneumatically controlled overflow valve, whose outlet pressure is adjustable with the help of control air.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: July 23, 1991
    Assignee: Samson AG
    Inventors: Dieter Eysel, Wilfried Gerk, Gerhard Klee, Hartmut Hirt
  • Patent number: 5030042
    Abstract: A machining apparatus including a rotating shaft disposed rotatably about an axis thereof, an eccentric rotating member supported by the rotating shaft rotatably about an axis thereof which is offset from the axis of the rotating shaft, at least one cutting tool which is supported by the eccentric rotating member such that each cutting tool is rotated with the eccentric rotating member and such that the cutting edge of each cutting tool is offset from the axis of the eccentric rotating member, and a rotating device supported by the rotating shaft, for rotating the eccentric rotating member relative to the rotating shaft, and thereby changing the cutting edge position of each cutting tool in the radial direction of the rotating shaft.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: July 9, 1991
    Assignee: Fuji Seiko Limited
    Inventors: Katutoshi Haga, Hajime Mizutani, Yuuji Osawa, Akiomi Ryuu, Yutaka Matsushita, Shinobu Kaneko
  • Patent number: 4818156
    Abstract: A drill for performing a roughing cut in a workpiece as the drill is advanced, and performing a finishing cut as the drill is retracted. A blade carrier is mounted eccentrically on the drill to be movable between first and second positions. In the first position, the blade is located for a roughing cut. In the second position, the blade is shifted radially for a finishing cut. A spring biases the carrier toward the second position and yields when the carrier moves to the first position. The spring bias is too weak to overcome reaction forces acting on the blade during a roughing cut, wherein the roughing cut reaction forces cause the carrier to be shifted to the first (roughing cut) position. The spring bias is strong enough to overcome the weaker reaction forces occurring during a finishing cut, so that the carrier is automatically shifted to the second (finishing cut) position when the drill is withdrawn through the workpiece.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: April 4, 1989
    Inventor: Walter Bauer
  • Patent number: 4815904
    Abstract: A drilling assembly for making boreholes with undercuts comprises a housing receiving a drill receiver driven by a drilling machine, a drill, the shaft of which is connected to the drill receiver, and a sleeve-shaped centering insert protruding from the housing and surrounding the shaft of the drill with a play and having a conical portion the outer diameter of which increases towards the housing.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: March 28, 1989
    Assignee: fischerwerke Artur Fischer GmbH & Co., KG
    Inventor: Artur Fischer
  • Patent number: 4776734
    Abstract: For correcting axial errors of a tool, the latter is held by a two-part tool holder, whose two parts are reciprocally displaceable by a setscrew along their engaging interfaces at right angles to the axis. For this purpose, the locking screws of a flange connection are correspondingly loosened. The axial correction can be simply and rapidly performed, in that the setscrew is provided on a setting ring rotatable about the axis.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: October 11, 1988
    Assignee: Dihart AG
    Inventors: Otto Buettiker, Johannes Christoffel
  • Patent number: 4773799
    Abstract: For sampling a section of a tube in a nuclear fuel assembly comprising a skeleton formed by two end-pieces joined by tubes fixed to the end-pieces an opening for the extraction of the section through the upper end-piece is cut out with a milling cutter. Through the inside and by means of a cutting tool, the spacer tube is cut off at a level beneath the junction with the upper end-piece by means of a rotary tool introduced through the upper end-piece and the latter is extracted through the opening.
    Type: Grant
    Filed: June 3, 1987
    Date of Patent: September 27, 1988
    Assignees: Framatome, Compagnie Generale Des Matieres Nucleaires
    Inventor: Louis Guironnet
  • Patent number: 4756648
    Abstract: An adjustable boring bar wherein the adjustment of the cutting end is provided by a prestressed internal bar bearing against the cutting end to selectively distort the boring bar in the direction of the cutting bit to compensate for wear. The adjustment is by means of rotation of the prestressed internal bar to direct the pressure of the internal bar against the boring bar and cutting bit in the desired direction.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: July 12, 1988
    Assignee: GTE Valeron Corporation
    Inventor: Robert F. Cusack
  • Patent number: 4679972
    Abstract: The invention relates to rotary cutting tools (10) provided with cutting means and mounted in a tool holder (11). A sleeve (17) provided with an eccentric bore is rotatably positioned between the tool holder (11) and the cutting tool (10) for radial adjustment of the cutting means. For purposes of making possible use of cutting tools having center cutting means the sleeve (17) is rotatable relative to the tool holder (11) about an axis (18) which is radially spaced from the rotational axis (21) of the cutting tool (10).
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: July 14, 1987
    Assignee: Seco Tools AB
    Inventor: Kjell Andersson
  • Patent number: 4648763
    Abstract: A router bit having an adjustable blade for cutting various widths of grooves includes a mechanism for maintaining static balance about the axis of rotation for all positions of the cutting blade within the range of adjustment. The router bit includes a main body adapted to be held and rotated by a chuck, and which includes a bore whose axis is parallel to but displaced from the axis of rotation of the main body. An arbor with an offset cutting blade is adjustably mounted in the bore, and the width of the groove is determined by the angular position of the arbor within the bore. However, such adjustment alters the static balance of the router bit about its axis of rotation. In accordance with the present invention, this source of unbalance is compensated by providing a counterweight whose position is dependent on the angular position of the arbor within the bore. In the preferred embodiment a cam on the shaft of the arbor bears against and determines the position of the counterweight.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: March 10, 1987
    Assignee: Safranek Enterprises, Inc.
    Inventor: Leland Safranek
  • Patent number: 4605346
    Abstract: The invention pertains to a fine adjustment for the tool of a machine tool. The tool carrier is displaceable by forces generated by the rotation of a shaft through an eccentric wherein the shaft is indexed by a reversible electric stepping motor. Tool adjustments of thousandths of an inch are accurately and consistently achievable.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: August 12, 1986
    Assignee: Schrader Machine & Tool, Inc.
    Inventor: David J. Trevarrow
  • Patent number: 4569115
    Abstract: A method and an apparatus for controlling a radial depth of cut of a rotary cutting tool in a machine tool, in particular in a machining center is disclosed wherein an eccentric mechanism for controlling the radial depth of cut of the tip of the cutting tool is not contained in a main shaft as in a conventional machine tool. Instead, it is provided outside the main shaft, and the radial depth of cut of the tip of the cutter is controlled by a tool holder to be automatically changeably fit to the forward end of the main shaft such that a tool holding shaft mounted to the tool holder by means of an eccentric mechanism so as to have the eccentricity relative thereto be adjustable is adapted to be controlled through a depth of cut central shaft passed through the bore of a draw-bar, concentrically disposed within the bore of the main shaft, by means of a servo-motor through a differential gear mechanism and the eccentric mechanism.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: February 11, 1986
    Assignee: Ikegai Tekko Kabushiki Kaisha
    Inventors: Keizo Unno, Tamotsu Yamamoto, Hitoshi Shimizu
  • Patent number: 4555205
    Abstract: A holding device for a rotating body comprising a tubular member (1) which permits insertion therein of the rotating body, at least three support members (2) disposed along the inner periphery of the tubular member (1) so as to be movable in a substantially radial direction, and a locking arrangement (3a, 3b, 4a, 4b, 10a, 10b) capable of independently holding each of the support members (2) in a desired position. With such device, bodies which are rotatable about an axis not coaxial with the driving shaft thereof can be held in place without having any substantial influence upon their rotational shafts. Besides, it is not necessary to pay close attention to the clearance between moving members in the manufacture and use of the device, and thus the holding device is high in versatility and low in cost.
    Type: Grant
    Filed: November 24, 1982
    Date of Patent: November 26, 1985
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Minoru Hiroyasu, Hideo Yamashita, Tamotsu Ohguro, Shigeru Yamagishi, Shigenari Shino
  • Patent number: 4540320
    Abstract: A method and apparatus for cutting holes of circular or other shape by first cutting at the center of the proposed hole, then cutting to the circumference and following the shape desired. A tool that accomplishes these functions is described which includes a pivoted link attached to a ring at one end and the cutting tool at the other end, when torque is applied to the link the tool follows the desired cutting sequence.
    Type: Grant
    Filed: August 8, 1983
    Date of Patent: September 10, 1985
    Assignee: Flow Systems, Inc.
    Inventor: Eugene E. Arnold
  • Patent number: 4487275
    Abstract: Drilling device for forming a borehole with an undercut, includes a cutting edge support mounted in a bearing housing so that it can rotate about an axis of rotation and pivot about a pivot axle extending transversely of the axis of rotation. A drive member via a drive shaft rotates the bearing housing and the cutting edge support. Initially, the drilling device forms a cylindrical borehole until the bearing housing contacts the material in which the borehole is formed. Then, due to relative axial displacement between the drive shaft and the bearing housing, the cutting edge support is pivoted and the cutting edges at the end of the cutting edge support within the base of the borehole makes an undercut. A stop in the bearing housing engages the cutting edge supports and limits its pivotal movement. A spring within the bearing housing returns the cutting edge support to its starting position when it is no longer pivoted to form the undercut.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: December 11, 1984
    Assignee: Hilti Aktiengesellschaft
    Inventor: Peter Froehlich
  • Patent number: 4467679
    Abstract: A tool head, in particular for turning and boring operations, comprises a base, an eccentric sleeve disposed therein, and a tool holder whose rearward portion engages in the eccentric bore of the eccentric sleeve, has a mounting for a tool, and may be displaced relative to the base, and secured in the position set. The eccentric sleeve forms a setting member rotatably mounted in the base and has a peripheral portion located between a front contact surface of the base and a support surface of the tool holder. The tool holder is guided so as to be non-rotatable relative to the base but displaceable transversely. An abutment for one part of a clamping device is provided on the base so that it is non-rotatably connected thereto or formed thereby. The clamping device clamps the tool holder at its support surface to the base at the contact surface thereof, also clamping the peripheral portion of the eccentric sleeve.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: August 28, 1984
    Inventors: Frank Johne, Hans G. Hartkamp, Hans-Georg Burmester
  • Patent number: 4439074
    Abstract: A boring tool includes a central shaft which carries a tool head on a shaft working end and which is mounted in a rotatable bushing for eccentric movement in the tool body. For work adjustment up to 1.00 inch on diameter, the tool head is radially slidable on the working end of the central shaft by an adjustment screw arrangement while the shaft is held by the bushing. For micro-adjustment, the bushing is rotated to move the shaft working end in an eccentric path with a key on the tool body translating this movement into radial micro-adjustment of the tool head to 0.0001 inch.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: March 27, 1984
    Assignee: Ex-Cell-O Corporation
    Inventor: Shivdas A. Kalokhe
  • Patent number: 4224846
    Abstract: A turning boring head or the like has a tool, designed for radial adjustment, and whose tool support is able to undergo feed motion, using liquid power into a position dependent on the desired size of the bore being machined. The bore rod body has not only a pressure medium powered tool support designed for fine positioning of the fine-adjustment cutting tool, but furthermore at least one further tool support for a further cutting tool.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: September 30, 1980
    Assignee: Firma Samson Aktiengesellschaft
    Inventors: Dieter Eysel, Wilfried Gerk
  • Patent number: 4211510
    Abstract: An adjustable boring tool including an axial shank and a socket for mounting a cylindrical boring bar with an offset axis clamped in adjustable position through transverse and longitudinally slotted segments on one side of the socket together with a transverse screw for clamping the slotted segments against the boring bar. A graduated dial fixed to the boring bar provides calibrated adjustment over a range equal to four times the offset.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: July 8, 1980
    Assignee: The Valeron Corporation
    Inventor: David A. Hopkins
  • Patent number: 4154555
    Abstract: A machine tool having a boring bar carrying cutting tools and mounted for rotative adjustment on a rotary driven spindle with its axis offset from the axis of the spindle. An additional cutting tool is mounted for radial adjustment on the spindle individually of the boring bar. The tools on the boring bar and the cutting tool on the spindle are adjusted radially by means of a helically splined nut engaged with a similarly splined shaft which is rotated relative to the spindle in response to axial displacement of the shaft.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: May 15, 1979
    Assignee: F. Jos. Lamb Company
    Inventor: Frank C. Skrentner
  • Patent number: 4120599
    Abstract: A single point boring tool using an eccentric for varying the radius of the cutting edge of the tool from the longitudinal axis of the tool to thereby vary the bore being machined. The holder tool can be rotated a full 360.degree., therefore a small eccentric can effect a relatively large variation in bore diameters. The tool holder is rotated after loosening fastener means to obtain the desired radius of bore and then locked in place by tightening the fastener means. Index markings on the tool shaft and tool holder enable unskilled personnel to adjust the bore size with precision.
    Type: Grant
    Filed: May 4, 1977
    Date of Patent: October 17, 1978
    Inventor: Norman H. Lovendahl
  • Patent number: 4053252
    Abstract: A cutting tool holder for rotatably supporting a cutting bar is provided in which the radial distance between the axis of rotation of the cutting tool holder and the cutting edge of the cutting bar is adjustable. The cutting tool holder comprises a hub member having one axial end secured to a rotating machine and an eccentric bore formed in the other axial end of the hub member. The cutting bar is secured to a bar holder having a shank which is rotatably received in the eccentric bore. A circular drive plate is fastened across the inner axial end of the bar holder and limits axial movement, but permits rotation of the bar holder within the eccentric bore. A compressible biasing member urges axial separation of the drive plate and the housing to functionally lock the bar against rotation during use.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: October 11, 1977
    Inventor: Richard C. Gersch
  • Patent number: 4022539
    Abstract: Boring bar structure including an adapter having an axis of rotation, an eccentric bore through said adapter having a longitudinal axis parallel to but offset from the axis of rotation of the adapter, adapter spline structure in one end of the bore concentric with the bore, a cylindrical boring bar body having concentric spline structure on one end thereof adapted to mesh with the adapter spline structure in adjusted relative angular positions, the one end of the boring bar body being adapted to fit within the eccentric bore in the adapter with the spline structures in mesh, whereby a cutting tool secured to the other end of the boring bar body may be adjusted radially of the axis of rotation of the adapter on axial movement of the boring bar body within the eccentric bore in the adapter and relative angular movement of the adapter and boring bar body and subsequent meshing of the spline structure with the adapter and bar in a different angular relation.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: May 10, 1977
    Assignee: J. P. Tool, Inc.
    Inventor: Bruce G. Peuterbaugh
  • Patent number: 3961857
    Abstract: A cutting tooth is carried on the outer end portion of a shaft which is eccentrically mounted within a power-rotated boring bar and which may be selectively turned within the bar to enable the tooth to be adjusted between an inactive retracted position and an active cutting position. By sliding the shaft in one direction, serrated rings mounted on the outer end portion of the shaft and within the outer end portion of the bar may be uncoupled to permit turning of the shaft. When the shaft is slid in the opposite direction, the rings are recoupled to establish a torsionally stiff rotational drive to the tooth by way of the outer end portions of the bar and the shaft. Turning of the shaft to adjust the tooth to its cutting position also effects outward adjustment of support pads for maintaining the outer end portion of the bar in a stable radial position during the boring operation.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: June 8, 1976
    Assignee: The Ingersoll Milling Machine Company
    Inventor: Robert T. Koblesky