Rotary Broach Patents (Class 407/12)
  • Patent number: 9713847
    Abstract: A turn broach machine may include a machining member machining a target to be cut; and an adaptor which is provided under the machining member, supports the machining member, and adjusts a position of the machining member. At the time of adjusting a position of a segment of the machining member from a plate provided in an adapter, the segment moves on an adjusting plate that is mechanically defined, such that work accuracy may be improved to increase marketability and a work time may be decreased to improve work convenience and productivity.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: July 25, 2017
    Assignee: Hyundai Motor Company
    Inventor: Tae Jin Kim
  • Patent number: 8979447
    Abstract: The face miller is equipped with a plurality of plate-shaped hard material cutting inserts that are distributed over the circumference. The hard material cutting inserts are located on a graduated circle in pockets of a blade carrier and have a main cutting edge, which is adjusted at a cutting edge angle smaller than 90° relative to the working plane of the miller. In order to ensure maximum machining performance at a good service life, the cutting edge angle is selected to range between 10° and 30°, wherein the main cutting edge at the same time has a slightly convex design. The main cutting edge transitions into the secondary cutting edge via a transition radius having a value that ranges between 0.5 and 1.5 mm. The axial rake angle ranges between 20 and 30°. According to an advantageous further development, the radial rake angle ranges between ?6° and ?10°.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: March 17, 2015
    Assignee: Guehring OHG
    Inventor: Lutfi Bozkurt
  • Publication number: 20150030397
    Abstract: A tool for the turning/turn broaching of workpieces is provided, a carrier which can be attached directly or indirectly to a machine tool a plurality of segments which are fastened to the carrier. Each of the segments is provided with a plurality of tool bits. In addition, each of the segments is attached to the carrier by at least two fastening elements, which act obliquely to a plane (E) lying perpendicular to the rotational axis (R) of the tool.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 29, 2015
    Inventors: Markus Heinloth, Günter Sponsel, Jan Grünler, Sebastian Föttinger
  • Publication number: 20110129308
    Abstract: A throw-away tip is mounted on a first tip mounting seat of a pin mirror cutter. In the throw-away tip, cutting edges are formed at intersecting ridgeline parts between a pair of oppositely disposed long side faces of a substantially trapezoidal flat-plate-shaped tip body, and upper and lower faces of the tip body. A thickness direction of the tip body is approximately aligned with a radial direction of the cutter body to provide curved edges formed in acute corner parts of the tip body for cutting. The tip is mounted on a second tip mounting seat of the pin mirror cutter such that the thickness direction of the tip body is approximately aligned with an axial direction of the cutter body to provide curved edges formed in obtuse corner parts of the tip body for cutting.
    Type: Application
    Filed: January 11, 2011
    Publication date: June 2, 2011
    Applicant: Mitsubishi Materials Corporation
    Inventors: Syoji Takiguchi, Motoshi Shirai, Toshiyoshi Watanabe
  • Publication number: 20090080991
    Abstract: The invention relates to a disc-shaped or strip-shaped tool for machining, particularly, for cutting profiles on a workpiece such as a crankshaft that is rotated during machining, comprising a number of tangentially and radially mounted indexable inserts (21). According to the invention, at least a part of the tangentially mounted indexable inserts (21) has a recess (31) that, in the tangentially mounted indexable insert (21), extends into a portion of the supporting surface (27, 28) and into a portion of the radially situated face (23, 24), and into which an upper rear section of a radially mounted indexable insert projects whose upper front section (32) radially protrudes with regard to said face (23).
    Type: Application
    Filed: May 12, 2005
    Publication date: March 26, 2009
    Inventors: Micheal Grimm, Markus Heinloth
  • Publication number: 20080118322
    Abstract: A broaching tool for the machining of bore surfaces, namely for introducing at least one groove, is proposed, the tool having a cutter head (5) with at least one cutter (69) and with a body (3) bearing the cutter head (5). The tool is characterized in that the cutter head (5) is rotatably movable and positioned eccentrically in the body (3), and that the middle axis (65) of the cutter head (5) forms an acute angle ? with the middle axis (7) of the body (3).
    Type: Application
    Filed: February 23, 2005
    Publication date: May 22, 2008
    Inventors: Dieter Kress, Friedrich Haberle
  • Publication number: 20070280800
    Abstract: The apparatus of the present invention provides a broaching machine configured to produce an internal gear member. The broaching machine includes a broaching tool defining a central axis. The broaching tool includes a first set of broaching teeth configured to cut only a first flank portion of a plurality of gear teeth; and a second set of broaching teeth configured to cut only a second flank portion of the plurality of gear teeth. The plurality of gear teeth are formed such that the first and second flank portions of each gear tooth are tapered between a first end portion and a second end portion. The broaching machine also includes a motor configured to rotate the broaching tool about the central axis at a selectable rate and in a selectable direction. A corresponding method for producing an internal gear member is also provided.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 6, 2007
    Inventor: Laurent Schlotter
  • Patent number: 6960051
    Abstract: A milling tool includes a milling body and a plurality of cutting inserts. The milling body has fastening devices to hold the cutting inserts in a plurality of respective insert pockets each having at least one base surface. Each of the cutting inserts has at least one cutting edge. The tool has a rotational axis and a rotational direction, as well as a feed direction and an end surface. The milling tool is provided to cut a work piece substantially in an axial direction of the tool, which is substantially perpendicular to the feed direction.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: November 1, 2005
    Assignee: Seco Tools AB
    Inventor: Jorma Koskinen
  • Patent number: 6764257
    Abstract: A milling tool includes a milling body and a plurality of cutting inserts. The milling body has fastening devices to hold the cutting inserts in a plurality of respective insert pockets each having at least one base surface. Each of the cutting inserts has at least one cutting edge. The tool has a rotational axis and a rotational direction, as well as a feed direction and an end surface. The milling tool is provided to cut a work piece substantially in an axial direction of the tool, which is substantially perpendicular to the feed direction.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: July 20, 2004
    Assignee: Seco Tools AB
    Inventor: Jorma Koskinen
  • Patent number: 6068430
    Abstract: In a mounting mechanism for a pin mirror cutter 22, the cutter body 22 is mounted with its outer periphery inserted into the inner periphery of a cutter mounting portion. an inclined surface of a tapered portion 22 formed on the cutter body and an inclined surface of a tapered portion formed on the cutter mounting portion are in surface-contact with each other, and the diameters of the contact surfaces gradually decrease in the direction of insertion of the cutter body into the cutter mounting portion. Furthermore, these inclined surfaces and are formed by a plurality of flat surfaces so as to form regular octagonal pyramid surfaces.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: May 30, 2000
    Assignee: Mitsubishi Materials Corporation
    Inventors: Yukihiro Saeki, Syoji Takiguchi, Nobukazu Horiike
  • Patent number: 5979520
    Abstract: An apparatus for smoothing a workpiece has a housing that is displaced relative to the workpiece in a direction and that carries a pair of augers provided with respective screwthreads having outer edges in contact with the workpiece. These augers are rotated on the housing about respective generally parallel axes transverse to the direction so as to scrape the workpiece with the screwthreads. Furthermore the augers are of such a hand and the are rotated in such a direction that the augers exert on the workpiece opposite axially directed forces.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: November 9, 1999
    Assignee: Babcock-BSH GmbH
    Inventor: Burkhard Behrendt
  • Patent number: 5931612
    Abstract: A hob cutter (4) for machining face or crown gears comprises a disc-like cutter body having an axis of rotation (6) and a number of hob teeth groups (1, 2, 3, . . . ) which are uniformly distributed over the circumference and which are each bounded at the front by a cutting face (S) and at the cirumferential side by a clearance face (V). The cutting face and the clearance face of each hob teeth group intersect one another in a cutting edge (9) which determines the shape of the face gear to be machined. The clearance face of each hob teeth group is made up of a number of generatrices (L, m) which are each situated in a machining plane which is determined by a line which intersects or crosses the axis of rotation (6) perpendicularly and intersects the generatrix at the position of the cutting edge. The extensions of the generatrices (L, m) determining the clearance face run at a minium spacing over the outside of the downstream hob teeth group.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: August 3, 1999
    Assignee: Crown Gear, B.V.
    Inventor: Augustinus F. H. Basstein
  • Patent number: 5911548
    Abstract: To form undercut grooves in a work piece, especially to retain turbine rotor blades, in a first step, the grooves are cut such that the flanks of the grooves have a preliminarily desired shape; then, in a second step, a bell-type countersink is moved radially to cut the desired shape of the flanks of the groove. Countersink cutters for the second step include a plurality of groups of cutting bits or inserts secured to posts on a shell, or bell-type countersink, in accordance with the profile to be cut.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: June 15, 1999
    Assignee: Walter AG
    Inventors: Siegfried Deiss, Rolf Huber, Rolf Vollmer
  • Patent number: 5894770
    Abstract: Rifling for the barrel of a firearm includes a first gain twist region for increasing the rotational velocity of a bullet as it travels from the breech towards the muzzle end of the barrel, and a second region in which the rifling is of a constant twist so that the bullet exits the muzzle end of the barrel at a constant rotational velocity. The bore defined in the barrel is tapered in a direction from the breech end to the muzzle end so that the diameter of the muzzle opening of the barrel is less than the diameter of the breech opening. The angle of the rifling is variable with the rate of the gain twist of the rifling. The gain twist of the rifling in the barrel is formed by a button, preferably having a sinusoidal shaped periphery, which is pulled through the barrel during the manufacturing process. The smooth periphery of the button prevents shredding of the barrel when the button is twisted at different speeds to provide the variable gain twist of the rifling in different sections of the barrel.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: April 20, 1999
    Inventors: Henry A. Rudkin, Jr., Donald Barker
  • Patent number: 5373631
    Abstract: A method for machining a rotation-symmetrical workpiece surface includes the steps of rotating the workpiece during machining, roughing the workpiece surface, smoothing in a longitudinal turning process the workpiece surface with a cutting tool having a cutting blade with a divided edge arrangement, advancing the cutting tool in a radial direction relative to the workpiece surface in the smoothing step, and moving the cutting tool in the axial direction of the workpiece surface for carrying out the longitudinal turning process. The cutting tool for carrying out the aforementioned method comprises at least one first cutting blade for the smoothing step, the first cutting blade having at least two adjacent edges axially spaced at a distance from one another.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: December 20, 1994
    Assignee: Gebr. Heller Maschinenfabrik GmbH
    Inventor: Karlheinz Schmid
  • Patent number: 5158400
    Abstract: A rotary disc cutter for cutting workpieces, especially gears and the like. The rotary cutter comprises a plurality of cutting blades arranged about the periphery of a rotary disc cutting body with at least a portion of the blades being roughing blades comprising a tip and two sides with each side having first and second side portions. The first side portion along with the tip defining a cutting surface of the blades while the second side portion is relieved such that a clearance is formed between the second side portion and the surface of the workpiece. The clearance being of a dimension to allow the flow of coolant therethrough thereby improving the cooling of the cutting surface and enhancing the flow of chips away form the vicinity of the blades. The invention further includes a substantially reduced number of blade segments. Alternative blade tip configurations are also disclosed.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: October 27, 1992
    Assignee: The Gleason Works
    Inventors: Paul R. J. Skinner, Robert J. Ball
  • Patent number: 5120166
    Abstract: A broaching tool has at least one adjustable cutting blade or plate. A two-fold adjustment is possible by mounting each cutting blade on an upper section of an insert mounted in a recess of a support or support ring sector. The upper insert section is secured to a lower insert section. The lower insert section is radially adjustable. The upper insert section is axially adjustable. Each adjustment can be made independently of the other adjustment.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: June 9, 1992
    Assignee: Widia Heinlein GmbH
    Inventor: Johann Woerner
  • Patent number: 4861204
    Abstract: A broaching tool is provided with at least nine cutting tool edges arranged at its circumference. The cutting tool edges cover only a certain sector along the circumference of a tool disk while leaving another sector between a first and last cutting tool edge free of cutting tool edges. This feature enables moving a tool axially relative to a work piece without first moving the tool radially relative to the work piece. Further, the tool can be moved radially without damage. These movements are performed when the sector without cutting tool edges faces the work piece. This sector without cutting tool edges has an opening angle of less than 180.degree. and it provides a spacing and free space relative to a work piece. Thus, work piece surfaces that have been machined by the cutting edges, are free of these cutting edges if and when the other sector faces the work piece.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: August 29, 1989
    Assignee: Wilhelm Hegenscheidt Gesellschaft mbH
    Inventors: Garri Berstein, Hans W. Obrig, Helmut Wittkopp
  • Patent number: 4784534
    Abstract: An improved cutting tooth configuration in which, unlike the conventional, straight line tool pattern with its constant tool rise, each tooth is incrementally advanced relative to the prior tooth by an amount that progressively decreases. This accounts for the variations in reaction force on the cutting teeth caused by workpiece deflections, so that the net thickness of material removed by each cutting tooth remains relatively constant. Instability and variation in the cutting force are thereby avoided, and tool wear is decreased.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: November 15, 1988
    Assignee: General Motors Corporation
    Inventors: Brian D. Kaminski, Pulak Bandyopadhyay
  • Patent number: 4436465
    Abstract: A manufacturing tool for finishing a preformed scroll for use in a scroll type fluid displacement apparatus is disclosed. The tool includes a working member having an end plate and a first involute element extending from one end surface of said end plate. A cutting edge extends along the inner side wall of an axial end of the first involute, and the end plate has a plurality of arc shaped holes along the outer side wall of the first involute element. A second involute element is rotatably coupled to the working member and interfits with the first involute element in a disposition to define a radial gap between the first and second involute elements. A cutting edge extends along the outer side wall of a first axial end of the second involute. A plurality of pins project axially from the other axial end of the second involute element and penetrate through the arc shaped holes. A rotatable member has a plurality of holes extending in the axial direction.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: March 13, 1984
    Assignee: Sanden Corporation
    Inventors: Eiji Fukushima, Seiichi Fukuhara, Masaharu Hiraga
  • Patent number: 4382731
    Abstract: An apparatus is provided for machining a flat surface on a workpiece and comprises an annular frame on which an annular wheel is rotatably mounted around a predetermined axis of rotation. A plurality of circumferentially spaced cutting members are secured to one axial surface of the wheel and preferably these cutting members are broaching tools. At least one, and preferably a plurality of circumferentially spaced workpiece holding fixtures are also mounted to the frame so that each fixture is open to, spaced from and axially aligned with said axial surface of said wheel. Each fixture can hold one workpiece with the surface to be machined adjacent the axial surface of the wheel with the cutting members. The wheel is continuously rotatably driven by a suitable motor at a high rotational speed, i.e. in excess of 200 surface feet/minute, while a feed unit associated with each fixture selectively axially moves its fixture with its workpiece towards the wheel, i.e.
    Type: Grant
    Filed: September 16, 1981
    Date of Patent: May 10, 1983
    Inventor: Russell L. Rigdon
  • Patent number: 4131146
    Abstract: A rotative, flaking, cutterhead in the form of a right regular cylinder with surface mounted helical shaped cutting blades. The cutterhead characterized by multiple and progressively increasing cutting blade circle diameters, said blades being closely grouped on said cylinder.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: December 26, 1978
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Peter Koch