Plural Cutters Patents (Class 409/203)
  • Patent number: 11752570
    Abstract: Device for machining an end of an elementary panel for its subsequent friction stir welding, the elementary panel comprising a metal body defining two opposite faces, the machining device comprising a chassis, at least two guiding members configured to guide a first face of the elementary panel, at least one machining tool mounted on the chassis, the machining tool being positioned between the two guiding members and at least one pressure member mounted on the chassis and configured to exert a pressure on a second face of the elementary panel so as to press the elementary panel against the guiding members along the horizontal reference direction.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: September 12, 2023
    Inventors: David Chartier, Franck Darras, Yannick Wattiez
  • Patent number: 11376702
    Abstract: The present disclosure discloses an integrated rotary cutting tool manufacturing device and method, the integrated rotary cutting tool manufacturing device comprises a workpiece transfer device, a machine body, a feeding device, grinding devices and a discharge device. The grinding devices comprise a rough grinding device used for carrying out primary grinding on a vertically arranged workpiece and a fine grinding device used for carrying out secondary grinding on the vertically arranged workpiece. The integrated rotary cutting tool manufacturing device is adopted by the rotary cutting tool manufacturing method. The device according to the present disclosure is compact in structure, high in machining efficiency and precision, and low in costs, the maximum values, the minimum values and the average values of the roundness and the concentricity of machined micro drill bits are closer to the standard values, and the stabilization process capability indexes of the roundness.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: July 5, 2022
    Inventors: Qinghong Han, Jian Zhu, Junli Liu
  • Publication number: 20150125230
    Abstract: An apparatus comprises a housing and a tool holder that is mounted to a first end of the housing. The tool holder is configured for selectively engagement with a spindle to support the tool and selective disengagement from the spindle for interchanging the tool with other tools. The tool further comprises a work-piece end mounted to a second end of the housing to perform component forming functions and/or component inspection functions. At least one energy harvesting device at the housing is configured to harvest a form of energy associated with the operation of the apparatus to generate sufficient electrical power for wholly powering the machine implement. Accordingly, there is an electrical interconnection between the at least one energy harvesting device and the work-piece end.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 7, 2015
    Inventor: Jan De Nijs
  • Patent number: 9011051
    Abstract: A milling apparatus is provided for cutting desired contours into a workpiece. The apparatus comprises a head that moves relative to a workpiece in a direction of cut. Spindles are supported on the head for rotation about parallel spaced-apart spindle z axes and comprise respective rotary cutters adapted for use in machining operations. A rotary head positioner is configured to be operatively connected between the head and a milling machine and to rotate the head about a head axis. A stagger controller is connected to the rotary head positioner and is configured to provide a desired swath of a cut to be formed in a workpiece by rotating the head to set a corresponding spindle stagger angle value.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 21, 2015
    Assignee: Lockheed Martin Corporation
    Inventor: Steve L. Bichsel
  • Patent number: 8468695
    Abstract: A machine which comprises two machining heads (1, 2) designed to machine crankshaft (5) ends and two machining stations (3, 4) designed to receive and secure at least one crankshaft (5). The machining stations (3, 4) are disposed between the two machining heads (1, 2). The crankshafts (5) are mounted in such a manner as to be disposed parallel to each other and oriented at 180°.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: June 25, 2013
    Assignee: Etxe-Tar, S.A.
    Inventors: Francisco Maria Ayestaran Lazcano, Gorka Gorrochategui Salaberria
  • Publication number: 20130118313
    Abstract: A system for simultaneously forming multiple flutes in a carbide rotary cutting tool includes a chuck adapted to grasp a green rod member and selectively rotate the green rod member about, and translate the green rod member along, a first axis. The system further includes a mechanism adapted to simultaneously machine multiple flutes in the green rod member as the green rod member is rotated about, and translated along, the first axis.
    Type: Application
    Filed: November 15, 2011
    Publication date: May 16, 2013
  • Publication number: 20120107064
    Abstract: A machine tool includes a base, a saddle movable on the base in a front-to-rear direction, a worktable movable on the saddle in a left-to-right direction, a post member disposed fixedly on a rear end of the base, a sliding seat movable vertically on the post member, a first spindle disposed rotatably on the sliding seat, and a second spindle movable vertically and rotatable on the sliding seat and spaced apart from the first spindle in the front-to-rear direction.
    Type: Application
    Filed: October 23, 2011
    Publication date: May 3, 2012
    Inventor: Feng-Tien Chen
  • Publication number: 20110200407
    Abstract: Some embodiments concern a groove forming machine configured to form a groove on the golf club face of a golf club head. The groove forming machine can include: a groove forming tool configured to rotate about an axis of rotation at a first angle substantially greater than zero degrees and substantially less than 90 degrees to the golf club face. The groove forming tool is further configured to actuate from a first end of the golf club face to a second end of the golf club face by contacting a first portion of the groove forming tool with the golf club face to cut the groove with a first cross-section into the golf club face. Other embodiments are described herein.
    Type: Application
    Filed: April 25, 2011
    Publication date: August 18, 2011
    Inventors: David L. Petersen, Michael Jakubowski, John A. Solheim
  • Publication number: 20110005074
    Abstract: The present invention relates to a machine for machining crankshaft (5) ends, which comprises two machining heads (1, 2) designed to machine crankshaft (5) ends and two machining stations (3, 4) designed to receive and secure at least one crankshaft (5), said machining stations (3, 4) being disposed between the two machining heads (1, 2). The crankshafts (5) will be mounted in such a manner as to be disposed parallel to each other and oriented at 180°. Additionally, the machining heads (1, 2) are designed to be positioned facing the ends of the crankshafts (5) of the machining stations (3, 4). Additionally, the invention relates to a crankshaft (5) machining process based on the fact that both machining heads (1, 2) alternately machine flange ends (9) and spike ends (8) in the crankshafts (5) secured to the machining heads (3, 4). In this manner, the machine machines crankshafts without stopping between the machining of two successive crankshafts.
    Type: Application
    Filed: February 20, 2008
    Publication date: January 13, 2011
    Inventors: Francisco Maria Ayestaran Lazcano, Gorka Gorrochategui Salaberria
  • Publication number: 20100278606
    Abstract: Machine tool systems and methods include methods of synchronizing cutting tools with a workpiece retainer. In some embodiments, the methods and systems provide at least two cutting tools that are synchronized to machine a common surface of a workpiece in a quick and efficient manner. A controller having a single line of code for controlling both cutting tools and the workpiece retainer may be used. The cutting tools may be synchronized such that they engage substantially opposite portions of the workpiece, thereby to reduce resulting forces in the workpiece that may tend to induce workpiece deflection and/or chatter. In other embodiments, a cutting tool is synchronized with a split workpiece holder that may be controlled to induce a compression, tension, or torsion pre-load in the workpiece.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 4, 2010
    Applicant: MORI SEIKI CO., LTD.
    Inventors: Gregory A. Hyatt, James Lankford, Jeffrey D. Wallace
  • Patent number: 7500297
    Abstract: The invention provides a machining center having a first main spindle unit and also a second main spindle unit with a ram shaft attached to a vertical machining center. A machining center 1 comprises a rotary table 20 that moves in the direction of an X-axis on a bed 10, and a cross rail 40 supported by a column 30 and moving in the direction of a Z-axis. A first main spindle unit 60 is attached to a saddle 50 supported by the cross rail and moving in the direction of a Y-axis. The first main spindle unit 60 is equipped with a first main spindle 70 that rotates around a B-axis. A second main spindle unit 100 disposed between the first main spindle unit 60 and the saddle 50 is equipped with a ram shaft 110 that moves in the direction of a W-axis and a turning head or a milling head that is replaceably attached to the leading end of the ram shaft.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: March 10, 2009
    Assignee: Yamazaki Mazak Corporation
    Inventors: Satoshi Okada, Tomohiro Kintoki, Masaki Tanase
  • Publication number: 20090016833
    Abstract: This invention is related to a rigid tapping feedback assembly that is adapted to being retrofit on a milling machine having a spindle with a spindle end extending beyond a bearing cap and an automated drive. In embodiments, the assembly comprising a housing, spindle-pulley adapter that is drivably engaged with the spindle end, pulley assembly, shaft assembly, housing cover plate, and rotary encoder. The housing mounts to the bearing cap and holds the shaft assembly in substantially parallel-spaced alignment with the spindle-pulley adapter. The pulley assembly mechanically links the spindle-pulley adapter and the shaft assembly, typically utilizing pulleys and a timing belt. The housing cover plate mounts to the housing enclosing the assembly components above and supporting the rotary encoder in substantial axial alignment with the shaft assembly. In operation, the rotary encoder senses spindle rotational speed spindle and provides feedback to the automated drive to control downward movement of the spindle.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 15, 2009
    Inventor: DWAYNE S. ELROD
  • Publication number: 20080317560
    Abstract: A cutter shifting mechanism includes a main body having a longitudinal cylinder casing and a shaft is located in the longitudinal cylinder casing. An arm is connected to a lower end of the shaft so as to be connected with cutters. A longitudinal pushing device is connected to a top end of the shaft and a gear is rotatably mounted to the shaft. The gear is movable along a longitudinal axis of the shaft. A threaded rod is engaged with the gear and connected with a latitude pushing device. Each of the longitudinal and latitude pushing devices includes a pneumatic cylinder. The mechanism includes simple structure and can be manufactured at low cost. The pneumatic cylinders accurately operate the parts of the mechanism.
    Type: Application
    Filed: June 25, 2007
    Publication date: December 25, 2008
    Inventor: Yi-Chun Liu
  • Patent number: 7179029
    Abstract: A machine for machining workpieces has at least one milling tool with an internal cutter. The machine is provided with a first guide system and a second guide system parallel to the first guide system. The first guide system has at least one compound slide having a slide part, wherein the at least one compound slide is moveable in a longitudinal direction of the first guide system and wherein the slide part is moveable transversely to the longitudinal direction. A milling tool is secured on the slide part. The first and second guide systems have sliding guides or roller bearing guides. The at least one compound slide has a transverse guide system and the slide part is guided on the transverse guide system.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: February 20, 2007
    Assignee: Gebr. Heller Maschinenfabrik GmbH
    Inventors: Christoph Hemming, Wolfgang Märker, Heinrich Bonfert
  • Patent number: 7134173
    Abstract: A spindle head for a universal milling machine having a housing rotatably mounted on a machine part and a work spindle mounted axially parallel in the housing. A second spindle unit adjustable about two axes is disposed on the rear side of the housing.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: November 14, 2006
    Assignee: Deckel Maho Pfronten GmbH
    Inventors: Walter Gstir, Peter Haas
  • Patent number: 7131473
    Abstract: A coping bit capable of being easily modified to cut profiles having tenons of varying lengths is provided. The coping bit includes an axially extending primary drive shaft and a first cutting member fixed on the primary drive shaft. An axially extending secondary drive shaft having an upper and a lower portion is removably mounted on the primary drive shaft for rotation therewith, and a second cutting member is mounted on the secondary drive shaft in spaced relation to the first cutting member when the secondary drive shaft is mounted to the primary drive shaft.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: November 7, 2006
    Assignee: Freud America, Inc.
    Inventor: James M. Brewer
  • Patent number: 7131801
    Abstract: A partitioning device between a machining station and a machine-tool driving station of the type driving at least two tool-holder rams is provided. The device includes a flexible curtain, called a central curtain, between two rams, where two ends are integral with a first ram and which is linked to the second ram. The relative movement of one ram with respect to the other along a first axis of movement, stretches more or less a length of curtain between the two rams.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: November 7, 2006
    Inventor: André Azema
  • Publication number: 20040154157
    Abstract: A machine tool in which the workpiece is transported by a pair of longitudinal carriages with transverse and vertical carriages supporting the workpiece holders to a machining region from a workpiece replacement region. In the machining region the workpiece is displaced relative to the tool and possibly rotated. In the workpiece replacement region, the workpiece is replaced in the machine tool by a workpiece which has not been machined.
    Type: Application
    Filed: October 14, 2003
    Publication date: August 12, 2004
    Applicant: EMAG Maschinenfabrik GmbH
    Inventors: Norbert Hessbruggen, Hans Georg Bohringer
  • Publication number: 20040115015
    Abstract: An apparatus (1) for making dental inlays or the like by copy milling a blank (7) based on an original (4) comprises a first spindle (3), which is adpated to hold the original (4) and a second spindle (5), which is aligned with the first spindle (2) and adapted to hold the blank (7). A first sensing unit (8) is adapted to scan the original (4) with a probe (9), and a first milling unit (10) is adapted to mill the blank (7) by means of a shank-end mill (11) to form a dental inlay or the like whose shape corresponds to that of the orignal (4) scanned by the probe (9). A second sensing unit (13) is adapted to carry out a rough scan of the original (4) before the first sensing unit (8) by means of a rotatable disc (14), and a second milling unit (15) is adapted to machine the blank (7), while the disc (14) scans the original (4), by means of a milling disc (16) whose size corresponds to that of the disc (14) to create a shape which roughly corresponds to that of the original (4).
    Type: Application
    Filed: October 8, 2003
    Publication date: June 17, 2004
    Inventors: Lennart Sjostedt, Andreas Dahr
  • Patent number: 6711804
    Abstract: A machine tool in which a plurality of machining positions is orbited by a work spindle unit carrying a workpiece and capable of radial displacement relative to the central axis of rotation. The work spindle unit may be one of one or more such units mounted upon a bridge element angularly displaceable about that axis.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: March 30, 2004
    Assignee: EMAG Maschinenfabrik GmbH
    Inventor: Gerrit Eicher
  • Publication number: 20030009872
    Abstract: An apparatus and method for in-situ milling includes a support and a pair of spaced apart rails attached to the support. The support and rails are mounted between a pair of opposed mill housing wear plate surfaces. A milling assembly is reversibly mounted on the rails in either of a first orientation and a second orientation. In the first orientation, the milling assembly mills one of the wear plate surfaces. The milling assembly is reverse mounted on the rails to the second orientation for milling the other of the wear plate surfaces. This permits the support and the rails to remain in one position between the wear plate surfaces requiring only the milling assembly to be moved to accomplish milling of each of the wear plate surfaces.
    Type: Application
    Filed: July 8, 2002
    Publication date: January 16, 2003
    Applicant: Self Leveling Machines, Inc.
    Inventors: Peter Brown, Tony Backhouse
  • Patent number: 6506004
    Abstract: The invention concerns a method of controlling the machining of a workpiece which moves during the machining operation and on which a plurality of tool units operate simultaneously at different machining locations, in particular for controlling the rotary milling of a rotating workpiece such as for example a crankshaft at a plurality of machining locations (A, B, . . . ) simultaneously by separate tool units (a, b, . . . ), which is characterised in that with knowledge of the optimum motion parameters (nkwa, na, xa, ya, . . . ; nkwb, nb, xb, yb, . . . ) of workpiece (KW) and tool (WZ), which are separate for each machining location (A, B), the speed of motion of the workpiece, in particular the rotary speed (nKWa, nKWb) of the crankshaft (KW) and the speeds of motion (na, xa, ya, . . . ;nb, xb, yb, . . . ) of the tool units (a, b . . . ) are so selected that in the sum (S) of all simultaneously machined machining locations (A, B, . . . ) an optimum machining result is achieved overall.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: January 14, 2003
    Assignee: Boehringer Werkzeugmaschinen GmbH
    Inventors: Matthias Kohlhase, Paul Dieter Scharpf, Wolf-Dietrich Voss
  • Patent number: 6457919
    Abstract: A multi-purpose machine tool is provides for high volume secondary operations. Multiple machining heads and eight degrees of freedom provide for maximum versatility and adaptability for convenient set-up.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: October 1, 2002
    Inventor: William D. Sangster
  • Patent number: 6428453
    Abstract: A machine tool for cutting workpieces, the machine tool having a tool slide shiftable on or along a machine tool table as support of a machining unit. The machining unit has at least one work spindle and a workpiece support for receiving the workpieces to be machined. For enabling fast machining including an accurate and rapid positioning of the machining unit with as few linear guidances as possible, the tool slide has a transverse support shiftably guided on or along the machine tool table and also has two cross slides shiftable in its longitudinal direction. The machining unit is jointedly arranged between the cross slides via a coupling mechanism having at least two dimensionally stable swivel arms for axially moving the work spindle.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: August 6, 2002
    Assignee: Deckel Maho Pfronten GmbH
    Inventors: Gerd Hoppe, Hans Gronbach
  • Patent number: 6412156
    Abstract: In a multiple spindle processing unit which can change processing locations of a work in accordance with a modification made to the work, the present invention is intended to facilitate changes of design corresponding to the modification made to the work and reduce the number of parts to be replaced. In a frame member which is guided and supported so as to be moved towards and away from a work, insertion holes are formed at a plurality of locations corresponding to processing locations of the work. In each of a plurality of tool main spindle assemblies, a main spindle having a front end portion where a chuck for mounting a tool is provided is coaxially journaled in a housing in the shape of a circular cylinder or a polygonal cylinder and is rotationally driven by a built-in motor. Each of the tool main spindle assemblies is mounted to the frame member with the housing inserted through the insertion hole.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: July 2, 2002
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Yoshio Yunokawa, Satoru Uemura, Toshihiro Asakura
  • Patent number: 6402441
    Abstract: In a burr removing method and apparatus of the present invention, a burr located at an edge of a steel piece is cut with a cutter by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 45° and piece along the lengthwise direction of the burr; or by disposing the cutter such that the flank of the cutter is substantially in parallel with the surface of the steel piece on which the burr exists and the angle between the cutting edge of the cutter and the edge of the steel piece which the burr intersects is at least 90° and cutting the burr located at the edge of the steel piece by relatively moving the cutter perpendicularly to the lengthwise direction of the burr.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: June 11, 2002
    Assignee: NKK Corporation
    Inventors: Koji Yamashita, Hiromasa Hayashi, Susumu Okawa, Koji Okushima
  • Patent number: 6387025
    Abstract: A machining device equipped with a spindle position interchanger comprises a longitudinal table provided on a bed and movable in a horizontal direction; a transverse table provided on the longitudinal table and movable in a direction perpendicular to the longitudinal table; a column erected on the transverse table and turnable in a horizontal plane; a first spindle head vertically movable along the column; a second spindle head provided at a position different from (at a position at 1800° to, or opposite to) the position of the first spindle head and vertically movable along the column independently of the first spindle head; a first main spindle and a second main spindle attached to the first spindle head and the second spindle head, respectively; a tool change arm for changing a tool in the second main spindle; and a tool magazine mounted on an upper portion of the column for housing many tools.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: May 14, 2002
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Akira Watanabe, Katsumi Kawagoe, Mitsuyuki Konishi, Isamu Takehana
  • Publication number: 20020009343
    Abstract: Pair of columns 3 and 4 are provided on a bed so as to be movable in a approach and separate direction to each other. On inside surfaces facing with the columns 3 and 4 to each other, there are respectively arranged tool spindles 32 and 32′ which are movably guided in one of first and second directions mutually perpendicular to a first direction that is a moving direction of the columns 3 and 4. Each of the tool spindles 32 and 32′ performs machining operations with respect to a common worktable by independently moving in the three directions mutually perpendicular to each other. Upper-lower covers 50 are intentionally arranged in a front of each of the columns 3 and 4 by upper and lower winders 52 and 53 so as to cover the front of each of the columns 3 and 4. Further, a cover apparatus 60 is intentionally arranged between the columns 3 and 4.
    Type: Application
    Filed: September 10, 1999
    Publication date: January 24, 2002
  • Patent number: 6338705
    Abstract: A machining head (36) is drivable along a vertical axis and two horizontal axes with respect to a workpiece held on a workpiece-holding device, and has, at progressively lower levels along said vertical axis, one or two high-speed spindles (44), one or two low-speed spindles (46) and one or two feed-out spindles (48), all arranged at right angles to said vertical axis and driven by one or more motors (42) mounted on the head. The machining head can bring the high-speed spindles to cooperate with a tool-changing magazine (52). The workpiece-holding device (54; 154) is adapted to carry two sets of workpieces on respective supports (56, 58; 170), and to shift said supports in succession between a working position near the head and a tool-changing position remote from the head.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: January 15, 2002
    Assignee: Vigel S.p.A.
    Inventors: Giorgio Cavallo, Marco Martinis
  • Patent number: 6334745
    Abstract: An apparatus for working on both sides of a flat workpiece includes a first support surface having a first axial line thereacross, a second support surface juxtaposed to and associated with the first support surface and having a second axial line thereacross which lies in a common plane with the first axial line, and a first carrying assembly operably connected to the first support surface in a manner to movably reciprocate along the first axial line and having a first extending arm which is laterally displaced from one side of the common plane and a second extending arm which is laterally displaced from another side of the common plane. A second carrying assembly is operably connected to the second support surface in a manner to movably reciprocate along the second axial line, wherein the second carrying assembly includes a workpiece removably mounted in a manner to position the workpiece in the common plane between the arms such that the arms extend about the workpiece.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: January 1, 2002
    Inventor: Timothy J. Bennett, Sr.
  • Patent number: 6319104
    Abstract: A tool for use in an abrading or resurfacing machine includes a head portion, a shank portion and a base portion, the shank portion joining the head and base portions and having a shape that tapers outwardly from a narrow neck where it joins the head portion to the base portion. The tool is inserted into a pocket in an abrading wheel having the same shape as the tool. Because of the irregular shape, centrifugal force will not cause the tool to become dislodged. The tapered neck serves to distribute torsional forces imparted by an adjustment screw which alleviates metal fatigue.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: November 20, 2001
    Inventor: James Emter
  • Publication number: 20010026742
    Abstract: The system constructed according to the present invention operates by properly positioning a base compact disc (CD) onto a cutting table and then cutting the CD to a preprogrammed shape. Base CDs are stacked on an elevator system. The CDs include one side on which data is recorded, and another side on which the CD label is printed. A robotic arm with a vacuum gripper then picks-up a CD from the stack and moves the CD to a cutting table. While the arm moves the CD, a machine vision system takes a picture of the CD label and compares the picture to an image of the label stored in data. An image mapping program then determines the rotational orientation of the CD by comparing the picture and data image. Once the orientation of the disc is known, the robot arm rotates the disc a calculated amount so that it can then be placed on the cutting table in a proper normalized orientation.
    Type: Application
    Filed: February 23, 2001
    Publication date: October 4, 2001
    Applicant: Ranz Johnson
    Inventor: Gary McKenzie
  • Patent number: 6212773
    Abstract: A method for forming shaped members by drilling, milling or pushing. The positions of tools are preset with respect to at least one reference surface of the machine. A reference surface of each of the members to be machined is placed on the machine reference surface. The tools are moved in union relative to the member on the machine so that at least one tool in the set can carry out a machining step on at least one side wall of the member. The tools are preset and the member is shaped in such a way that members of various cross sections may be suitably machined from the same set of tools.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: April 10, 2001
    Inventor: Daniel Colombo
  • Patent number: 6145178
    Abstract: A machine tool comprises a base with an upstanding column, a vertical spindle axis tool driving unit symmetrically located and vertically movable on the front of the column, a frontwards oriented horizontal spindle axis tool driving unit symmetrically located and vertically movable extending through the column, and a pair of guiding rails to extend vertically thereon and horizontally spaced apart from each other for guiding the upward and downward movement of the tool driving units. Symmetrically disposed counterbalance weights for both tool driving units are located within the column. Independent leadscrew driving means provide vertical upward and downward movement of the tool driving units.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: November 14, 2000
    Assignee: Green Technologies, Inc.
    Inventor: Steve C. Green
  • Patent number: 6095727
    Abstract: A working head for numeric-control machine tools is adapted to be moved along two or three axes relative to one or two parts mounted on respective worktables which can rotate about respective parallel axes. According to the present invention, the head supports one or preferably two tool-supporting spindles which are pivoted about a common axis which is transverse to the axes of the spindles under the actuation of motor means which are rigidly coupled to the head and are controlled by a numeric control unit.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: August 1, 2000
    Assignee: Vigel S.p.A.
    Inventors: Marco Martinis, Giorgio Cavallo
  • Patent number: 6086295
    Abstract: This invention is of an automated flash removal apparatus which features counter-rotating trimming wheels which are positioned against the molded flexible urethane part or the molded flexible polyvinyl chloride part. The force of the trimming wheels against the part undergoing the flash removal process is adjustable and is controlled by opposing tension springs. The trimming wheels may by set at any angle to the part so as to enhance the flash removal characteristics. The trimming wheels are guided along the sides of the part by interchangeable guide bars which may be profiled to accommodate parts which present surfaces that are not substantially straight. The trimming wheels utilize a textured pattern which operate to abrade the flash from the part, thereafter polishing the part on the return pass.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: July 11, 2000
    Inventors: Norm Novak, Eric Bailey
  • Patent number: 6067695
    Abstract: The miller comprises a pair of benches situated on both sides of a framework, in such a manner that on the upper crossbar is mounted, displaceable and guidable, a transverse support that carries a couple of vertical arms on which are mounted the corresponding tools, the arms being dispaceable towards one side or the other with respect to the support, while the tool that is borne by each of the arms may move upward/downward, as well as rotate, in such a manner that a combination of these movements produced by their corresponding motors allows simultaniously making two pieces that are symmetrical or the same, as well as effect simultanious digitalized work with one arm and milling with the other, after having mounted the corresponding tool on one arm and a digitalizer on the other.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: May 30, 2000
    Assignee: Noran S.L.
    Inventor: Ignacio Alvarez Momoitio
  • Patent number: 6050760
    Abstract: A CNC milling machine comprises a main transmission shaft driven by a motor, an upright shaft provided with a transmission wheel set that is actuated by the main transmission shaft, an engagement device having a main shaft which is provided with a connection member which is in turn provided with an engagement wheel set engaged with the main transmission shaft, and a horizontal shaft provided with a gear set mounted thereon such that the gear set is engageable with the main shaft of the engagement device. The upright shaft is actuated to turn via the transmission wheel set so as to enable an upright milling cutter of the upright shaft to carry out the longitudinal cutting of a workpiece. The horizontal shaft is actuated to turn via the engagement wheel set so as to enable a horizontal milling cutter of the horizontal shaft to carry out the horizontal cutting of the workpiece without having to transfer the workpiece.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: April 18, 2000
    Assignee: Rambo Machinery Co., Ltd.
    Inventor: Teng A-Tung
  • Patent number: 6050757
    Abstract: The invention relates to a process and a device for machining of workpieces (10) like crankshafts or similar components which are rotated about their own axis during machining, at least two mutually independently operating rotary milling tools (15, 16, 21, 22) performing material-removing operations simultaneously at different points on the workpiece. In order to maximize the edge life of the tools used, with special regard to the most uniform wear possible on all the rotary milling tools, it is proposed that the rotation speed of the tools be matched or varied to provide an optimum cutting operation and the rotation speed of the second and any other rotary milling tool be controlled dependently upon the tool rotation speed predetermined by the matching or variation.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: April 18, 2000
    Assignee: Widia GmbH
    Inventor: Reinhold Gesell
  • Patent number: 5980172
    Abstract: A double cutting spindle unit comprising a main spindle unit and a sub-spindle unit mounted on the main spindle unit and vertically slidable relative to the main spindle unit. The chucking member is normally biased toward its fastening direction by a fastening spring formed by a plurality of spiral belleville springs arranged around the chuck actuating shaft. A two-stage hydraulic cylinder comprising two coaxially arranged cylinders is mounted on a supporting frame arranged on the top cover, and the actuating rod of the hydraulic cylinder is arranged with its free end being opposite to the end of the chuck actuating shaft.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: November 9, 1999
    Assignee: Shoda Iron Works, Ltd.
    Inventor: Hiroshi Shoda
  • Patent number: 5953974
    Abstract: An apparatus for cutting slots in corrugated and twin-wall pipes that have annular elevations alternating with annular impressions, comprises a machine frame with a pipe duct and a lifting carriage for moving a pipe through the pipe duct. Two groups of holding and centering levers are provided which are engageable with a pipe for straightening and retaining the latter axially and radially. Further, saws are provided which are disposed between two groups of holding and centering levers on the machine frame and which are movable to reciprocate lineally and radially in relation to the axis of the pipe duct.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: September 21, 1999
    Assignee: Wilhelm Hegler
    Inventors: Ralph-Peter Hegler, Wilhelm Hegler
  • Patent number: 5921729
    Abstract: A double surface machining system for machining both side surfaces of a workpiece comprises, in an operational state, a pair of upper and lower spindle heads to be vertically positioned and driven, respectively, a pair of upper and lower spindles provided for the upper and lower spindle heads, respectively, in parallel to each other, to be rotatable about horizontal axes thereof, the upper and lower spindles having front ends to which tools are mounted, respectively, a pair of upper and lower workpiece supports for supporting the workpiece therebetween, which are vertically positioned and driven on one side of the upper and lower spindle heads as viewed from a workpiece feed direction, respectively, and another pair of upper and lower workpiece supports for supporting the workpiece therebetween, which are vertically positioned and driven on another one side of the upper and lower spindle heads as viewed from a workpiece feed direction, respectively.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: July 13, 1999
    Assignees: Kabushiki Kaisha Toshiba, Japan Atomic Energy Research Institute
    Inventors: Mitsuru Kikuchi, Koya Watanabe, Yutaka Noda, Masanao Shibui
  • Patent number: 5871313
    Abstract: A cutting assembly and an apparatus for self-aligned chamfering of a workpiece are disclosed. The chamfering apparatus includes a mechanism for releasably securing the workpiece in preparation for a chamfering thereof, a cutting assembly, and a mechanism for moving the cutting assembly proximate the securing mechanism between a first position and a second position, wherein the cutting assembly traverses along an edge portion of the workpiece to be chamfered.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: February 16, 1999
    Assignee: International Business Machines Corporation
    Inventors: Anton Nenadic, David Scott Graboski, William A. Cavaliere, James Edward Tersigni
  • Patent number: 5857894
    Abstract: In a stand (1), a work-piece spindle (2) is mounted for rotation around a vertical axis (C). On the stand (1), a slide (3) can be shifted horizontally and on the slide, a work-piece carrier (5) can be swivelled around a vertical axis (C1). On the carrier (5), a slide (6) can be shifted vertically. The slide (6) bears a linear guide element (7) able to be swivelled around a horizontal axis (A) and on which a second slide (8) can be shifted. The slide (8) bears the grinding spindle (axis B) with mounted grinding worm (9). A dressing device (12) is arranged, relative to the axis (C1), opposite the work-piece spindle (2). The machine makes easy operation possible, because all parts to be operated are quite accessible.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: January 12, 1999
    Assignee: Reishauer AG
    Inventors: Jurg Griesbach, Erich Ronneberger, Walter Wirz
  • Patent number: 5848863
    Abstract: A working machine includes a base having a working table for supporting a work piece and having a tool disposed on top for moving downward to machine the work piece. A block is secured to the base and has another tool for being selectively rotated to machine the side portion of the work piece. The another tool may be selectively driven by a motor which may drive the tool for moving downward to machine the work piece. The block has a screw driven slide to engage with the track and includes two followers for allowing the block to be secured to different vertical tracks.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: December 15, 1998
    Inventor: Bi Hu Liao
  • Patent number: 5839862
    Abstract: A machine tool which has a swingable spindle head comprises a base member 1, a retaining member 5 attached swingably by a support shaft 3 to the base member 1, a spindle head 7 attached onto the retaining member 5, a lateral slider 15 being capable of linearly reciprocating in a linearly reciprocating direction along a chord of a circular arc described by an end portion of the retaining member 5, a longitudinal slider 21 provided in the lateral slider 15 reciprocating in a direction perpendicular to the chord, a connecting shaft 23 pivotally connecting the retaining member 5 to the longitudinal slider 21, and a linear drive system connecting to the lateral slider 15. When the linear drive system drives, the retaining member 5 can be swung around the support shaft 3, so that swing of the spindle head 7 can be permitted.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: November 24, 1998
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Hideki Hayashi, Kazumichi Aoki, Tadashi Sano
  • Patent number: 5809631
    Abstract: A multi-axis machining apparatus including structure for positioning a workpiece in a precise and repeatable manner in relation to a tool bit. The multi-axis machining apparatus includes a main table forming a horizontally disposed upper surface and having an opening for mounting a first tool in an inverted position therein and for projecting a first bit upward through the opening and above said upper surface. The horizontal upper surface has coplanar first and second axes intersecting each other in perpendicular relationship and the opening is centered on a vertical third axis, intersecting the first and second axes in perpendicular relationship therewith. A fence structure may be attached or formed integral to the carriage assembly for guiding movements of a workpiece along the upper surface of the main table. A second table assembly is attachable to the underside of the first table.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: September 22, 1998
    Inventor: Jean-Paul Poulin
  • Patent number: 5769579
    Abstract: A spindle assembly for a machine tool generally including a first housing having a bore provided with a lining formed of a structural polymer, a second housing disposed in the first housing bore in sliding engagement with the lining therein, a first spindle journaled in the first housing, a second spindle journaled in the second housing in axial alignment with the first spindle and operatively connected thereto for axial displacement relative thereto and rotational movement therewith and means for displacing the second housing relative to the first housing to correspondingly axially displace the spindles.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: June 23, 1998
    Assignee: Thermwood Corporation
    Inventor: David A. Stutsman
  • Patent number: 5769578
    Abstract: A crankshaft miller is constructed by providing two cutter units movably in a longitudinal direction of a work between a pair of work heads provided on a bed and supporting both ends of the work. A cutter for machining a main journal and a first resting device are provided in one of the pair of cutter units. A pitch of the cutter for machining a main journal and the first resting device is selected such that when a counterweight is machined by the cutter for machining a main journal, a main journal which is located adjacent a counterweight forming a pair with the counterweight is clamped by the first resting device. A cutter for machining a pin journal and a second resting device are provided in the other of the pair of cutter. A pitch of the cutter for machining a pin journal and the second resting device is selected such that when a pin journal is machined by means of the cutter for machining a pin journal, the main journal adjacent the pin journal is clamped by the second resting device.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: June 23, 1998
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Masumi Shimomura
  • Patent number: 5735029
    Abstract: An arbor mill machine which performs multiple machining operations on a workpiece in one work station. A rotatable tool turret carries a plurality of arbor cutting tools each of which can be indexed into the work station for performing a machining operation on a workpiece carried by a slide which advances the workpiece into the arbor tool and retracts the workpiece from it. A single drive spindle carried by a slide is advanced to releasably engage and drive the arbor tool in the work station to machine the workpiece and is retracted to release and disengage the arbor tool so that it can be removed from the work station when the turret is indexed to advance another arbor tool into the work station to perform another machining operation on the workpiece. The turret is releasably locked to prevent it from rotating while an arbor tool is machining a workpiece and is released between machining operations to permit indexing of the turret to position another arbor tool in the work station.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: April 7, 1998
    Assignee: Western Atlas, Inc.
    Inventor: Michael D. Panetta