Caused By Tools (e.g., "platens") Relatively Moving Parallel To Their Surface Patents (Class 72/88)
  • Patent number: 10044173
    Abstract: A method of manufacturing a spark plug including a cylindrical tubular metallic shell having a screw portion on an outer surface thereof and a ground electrode attached to an end surface at one end of the metallic shell in the direction of the center axis thereof comprises a measurement step of measuring a surface of the screw portion which passes through a measurement region located at a predetermined position in the direction of the center axis, while rotating the metallic shell about the center axis thereof; an attachment position calculation step of calculating, on the basis of information obtained in the measurement step, an attachment position at which the ground electrode is attached to the end surface; and a joining step of joining the ground electrode to the end surface at the attachment position, wherein the measurement step includes a step of measuring a displacement of the surface of the screw portion by using a non-contact-type displacement sensor.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: August 7, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Jiro Kyuno
  • Patent number: 9511414
    Abstract: A die for roll forming threads on a cylindrical blank includes a planar die body having a longitudinally elongate working face of sufficient length for the blank to make multiple revolutions across the face. A plurality of thread forming elements on the face. The thread forming elements are spaced apart longitudinally of the die working face an ever increasing distance, based on the actual rolling diameter of the blank with the spacing between the thread forming elements at the start end equal to the diameter of the blank and the spacing between the thread forming elements at the finish end equal to eighty-five percent of the final diameter of the thread formed on the blank. The thread forming elements on the working face of the die are equally spaced apart in a direction perpendicular to the longitudinal extent of the working face.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: December 6, 2016
    Assignee: Illinois Tool Works Inc.
    Inventor: Kenneth R. Levey
  • Patent number: 8635894
    Abstract: A process for producing hollow bolts including a longitudinal bore with the hollow bolts being provided with circumferential notches. The hollow bolts are provided with longitudinal grooves extending between elevations determining the bolt diameter, wherein circumferential notches are rolled onto the hollow bolts provided with the longitudinal grooves and the elevations, the longitudinal grooves being of such cross-section that some of the material displaced during rolling-on of the notches flows into the longitudinal grooves.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: January 28, 2014
    Assignee: Ejot GmbH & Co. KG
    Inventor: Eberhard Christ
  • Patent number: 8453484
    Abstract: A method for manufacturing a toothing on a component of a shaft/hub connection is disclosed. The component may be held permanently in a chucking while it receives an at least two-stage toothing in this chucking. A special draw die for carrying out the method is also proposed, a first toothing-forming region with a first height and at least one following second toothing-forming region with at least one second height being arranged between a first and a second end face, and the first height being designed to be lower than the second height.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: June 4, 2013
    Assignee: GKN Driveline International GmbH
    Inventor: Wolfgang Beigang
  • Publication number: 20130004262
    Abstract: In the case of a screw having at least one thread (26) that is formed by a rolling process, especially a flat-die rolling process, whereby the thread (26) consists of two ridges of material (28a, 28b) which are shaped from a blank (12) by means of cold-forming during the rolling process in such a way that the thread has a closing crease (32) where the ridges of material (28a, 28b) meet each other, it is provided that the closing crease (32) is situated in the area of a flank (30a, 30b) of the thread (26).
    Type: Application
    Filed: June 26, 2012
    Publication date: January 3, 2013
    Applicant: Hilti Aktiengesellschaft
    Inventors: Falk Rosenkranz, Corinna Achleitner
  • Publication number: 20120328393
    Abstract: A rolling die for forming a screw thread on a screw blank is disclosed. The rolling die has a plurality of grooves, where the grooves each have two flanks as seen in cross-section. At least a portion of each of the grooves has a forming area in which the size of a profile angle enclosed by the flanks decreases continuously along the grooves.
    Type: Application
    Filed: January 26, 2012
    Publication date: December 27, 2012
    Applicant: Hilti Aktiengesellschaft
    Inventors: Juergen GEBHARD, Simon OPPENEIGER, Corinna ACHLEITNER, Mirco FLEIGE
  • Patent number: 8312750
    Abstract: A method for producing a rotationally symmetrical hollow metal part, particularly a shaft. According to the method, bar-shaped ductile solid material is provided, the solid material is heated from about 300° C. below the forging temperature to the forging temperature, the solid material is transversally spline-rolled until weakenings are created in the core zone (3) of the solid material and the sold material is torn open. Two mandrels (5,6) are forcibly introduced into the center of the bar-shaped solid material during the rolling process, and then one mandrel is retracted while the other mandrel continues advancing so as to produce a tubular part. A transversally spline-rolled rotationally symmetrical hollow part, especially a shaft, which is produced according to noted method can be embodied as a transmission shaft, camshaft, drive shaft, output shaft, starter shaft, hollow shaft, or can be a preform for molded parts and the like.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: November 20, 2012
    Assignee: Gesenkschmiede Schneider GmbH
    Inventors: Thomas Koerner, Ernst-Peter Schmitz, Peter Kolbe
  • Patent number: 8033153
    Abstract: A method and apparatus to cold form rings or a lead battery terminal with undercuts or overhangs to improve the sealing properties of the rings. The apparatus can be one of a segmented die device and a die device wherein one die member moves relative to the other die member. In either apparatus at least one ring on the battery terminal is transferred from having a first shape into a second different shape with an overhang.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: October 11, 2011
    Assignee: Tulip Corporation
    Inventors: Bernard N. Spiegelberg, Terry J. Evraets
  • Patent number: 7908897
    Abstract: A spline rolling tool including a plurality of forming teeth that are to bite into a cylindrical workpiece so as to roll splines in the workpiece. Each of the forming teeth has an incomplete toothed region in which a crest of each forming tooth is removed such that an upper end of each forming tooth in the incomplete toothed region is defined by an incomplete-toothed region surface that includes a curved surface portion, a flat surface portion and a slant surface portion. The incomplete-toothed region surface is defined at its periphery by a chamfered edge that has a surface roughness of not larger than about 3.2 ?m. Also disclosed is a process of manufacturing the spline rolling tool, which includes a chamfering step of forming the chamfered edge by using a wire brush having abrasive grains that are fixed to bristles of the wire brush.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: March 22, 2011
    Assignees: Honda Motor Co., Ltd., OSG Corporation
    Inventors: Masahiko Igarashi, Hideo Watanabe, Nobuyoshi Asaga, Satoshi Komuro, Takeshi Mochizuki, Daisuke Sakurai, Manabu Igusa, Yoshihiro Umebayashi, Masahiro Oiwake
  • Patent number: 7866197
    Abstract: A rolling-circle machine for rolling a workpiece includes at least one first rolling portion, a second rolling portion connected to the first rolling portion, and at least one adjusting screw. The first rolling portion includes one or more first concaved sections for rolling the workpiece and at least a through hole. The second rolling portion includes one or more second concaved sections for rolling the workpiece. The second concaved section forms one or more rolling slots in cooperation with the first concaved section. The adjusting screw includes a threaded post passing through the through hole of the first rolling portion and one end of the threaded post is fixed in the second rolling portion. The adjusting screw is configured for adjusting a distance between the first and the second rolling portion to roll workpieces that have different dimensions.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: January 11, 2011
    Assignee: Hon Hai Precision Co., Ltd.
    Inventor: Chung-Pei Wang
  • Publication number: 20090320551
    Abstract: A thread rolling die having a nitride diffusion layer formed in a surface layer portion of a form rolling surface portion for thread rolling to plastically deform a surface of a workpiece, the nitride diffusion layer being formed in an ion nitriding treatment such that a compound layer depth is 1 ?m or smaller, a practical nitride layer depth ranges from 5 to 40 ?m, and either of that a surface hardness is 1300 HV or larger or that a surface hardened amount is 400 HV or larger.
    Type: Application
    Filed: June 15, 2009
    Publication date: December 31, 2009
    Applicant: OSG CORPORATION
    Inventor: Akihiko Ogura
  • Patent number: 7628049
    Abstract: A method and apparatus to cold form rings or a lead battery terminal with undercuts or overhangs to improve the sealing properties of the rings. The apparatus can be one of a segmented die device and a die device wherein one die member moves relative to the other die member. In either apparatus at least one ring on the battery terminal is transferred from having a first shape into a second different shape with an overhang.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: December 8, 2009
    Assignee: Tulip Corporation
    Inventors: Bernard N. Spiegelberg, Terry J. Evraets
  • Publication number: 20090156447
    Abstract: A thread rolling lubricant of a nonchlorine species, in which a lubricant base oil is blended with 25 through 35 weight % of (A) a sulfur species extreme pressure agent, 6 through 16 weight % of (B) an organic zinc compound, 2 through 12 weight % of (C) a calcium species additive, and 2 through 13 weight % of (D) an oiliness agent for carrying out thread rolling.
    Type: Application
    Filed: December 4, 2008
    Publication date: June 18, 2009
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Mami KATO, Teruo FUKAYA
  • Publication number: 20090107198
    Abstract: A rolling-circle machine for rolling a workpiece includes at least one first rolling portion, a second rolling portion connected to the first rolling portion, and at least one adjusting screw. The first rolling portion includes one or more first concaved sections for rolling the workpiece and at least a through hole. The second rolling portion includes one or more second concaved sections for rolling the workpiece. The second concaved section forms one or more rolling slots in cooperation with the first concaved section. The adjusting screw includes a threaded post passing through the through hole of the first rolling portion and one end of the threaded post is fixed in the second rolling portion. The adjusting screw is configured for adjusting a distance between the first and the second rolling portion to roll workpieces that have different dimensions.
    Type: Application
    Filed: August 15, 2008
    Publication date: April 30, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHUNG-PEI WANG
  • Publication number: 20090007618
    Abstract: In an apparatus for producing a spark plug, approach driving conditions are calculated on the basis of a specified thrust feeding amount so that, while a temporal overlap occurs between a time period of feed-driving toward a rolling position P2 of a workpiece supporting portion (11) and an approach driving time period, in a circumferential direction of a workpiece W, a positional relationship between the starting position of the threaded portion which is rolling-formed, and the joining position of the ground electrode to the tip end face of the workpiece W is constant. The operation of an approach driving portion is controlled on the basis of the calculated approach driving conditions.
    Type: Application
    Filed: November 22, 2007
    Publication date: January 8, 2009
    Inventors: Hiroshi Ohashi, Kiyoshi Inoue, Masato Nagasaki, Yasuhiro Hori
  • Patent number: 7392680
    Abstract: There is provided a rolling die and a method for forming a thread or worm and a spline having a small number of teeth whose number is thirteen or less simultaneously by rolling. By use of rolling dies, the formation of a worm by rolling by use of a thread rolling die starts, and after that, the formation of a spline having a small number of teeth by rolling starts by use of a spline rolling die while continuing the formation of the worm. Accordingly, a rolled material can be rolled forcibly by a driving source from the worm rolled using the thread rolling die. As a result, the spline having a small number of teeth whose number is thirteen or less can be formed by rolling onto the rolled material at the same time as the formation of the worm.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: July 1, 2008
    Assignees: Toyota Jidosha Kabushiki Kaisha, Hayashi Precision Co. Ltd, OSG Corporation
    Inventors: Yasuo Kinoshita, Masahiko Higuchi, Yoshihiro Umebayashi
  • Publication number: 20080104817
    Abstract: A spline rolling tool including a plurality of forming teeth that are to bite into a cylindrical workpiece so as to roll splines in the workpiece. Each of the forming teeth has an incomplete toothed region in which a crest of each forming tooth is removed such that an upper end of each forming tooth in the incomplete toothed region is defined by an incomplete-toothed region surface that includes a curved surface portion, a flat surface portion and a slant surface portion. The incomplete-toothed region surface is defined at its periphery by a chamfered edge that has a surface roughness of not larger than about 3.2 ?m. Also disclosed is a process of manufacturing the spline rolling tool, which includes a chamfering step of forming the chamfered edge by using a wire brush having abrasive grains that are fixed to bristles of the wire brush.
    Type: Application
    Filed: February 28, 2006
    Publication date: May 8, 2008
    Applicants: Honda Motor Co., Ltd., OSG CORPORATION
    Inventors: Masahiko Igarashi, Hideo Watanabe, Nobuyoshi Asaga, Satoshi Komuro, Takeshi Mochizuki, Daisuke Sakurai, Manabu Igusa, Yoshihiro Umebayashi, Masahiro Oiwake
  • Patent number: 7353679
    Abstract: There is disclosed a coldforming machine in which the rolling racks are preferably arranged in vertical direction and are adjustable via a feed means during the rolling operation in radial direction with respect to the workpiece to be formed.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: April 8, 2008
    Assignee: Ex-Cell-O GmbH
    Inventors: Bernd Kreissig, Lothar Ophey, Otto Bruentrup
  • Patent number: 7278286
    Abstract: A rolling die is provided for forming a rod member with a ball portion. The rolling die includes a first die member and a second die member facing the first die member. Each of the first die member and the second die member has a process surface. The process surface has a start forming portion having a process tooth configured to bite the rod member and an arc surface portion proximate the process tooth, an intermediate forming portion having the process tooth and a curved surface proximate the process tooth, the curved surfaced being configured to press the rod member to form an arched shape, and a finish forming portion having the process tooth and a hemispheric groove configured to press the rod member into the arched shape to form the ball portion.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: October 9, 2007
    Assignee: Kabushikikaisha Sanmei Seisakusho
    Inventors: Naoshige Taniguchi, Yoshio Nonaka, Norishige Hayashi, Kazuhiko Masuo
  • Patent number: 7231794
    Abstract: An object of the present invention is to provide a method of manufacturing a rotational shaft having a worm, wherein a worm portion has a small bending amount. According to the method of the invention, a worm portion is formed at a worm forming portion by a rolling process with rolling dies, and a small diameter portion is formed at least at one axial end of the worm forming portion, wherein a diameter of the small diameter portion is smaller than a diameter of a bottom of a worm tooth to be formed at the worm forming portion, so that surplus material portion of the worm forming portion can flow toward the small diameter portion.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: June 19, 2007
    Assignee: ASMO Co., Ltd.
    Inventor: Koji Kidowaki
  • Patent number: 7156600
    Abstract: A threaded fastener comprises a first, primary thread lead, and a pair of second, auxiliary thread leads alternatively interposed between successive threads of the first, primary thread lead, except within the vicinity of the tip portion of the fastener so as to define space for accommodating debris generated during the self-tapping of the fastener into a workpiece. The fastener also comprises lobe members formed upon the primary thread lead so as to predeterminedly affect torque insertion and pull-out resistance values.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: January 2, 2007
    Assignee: Illinois Tool Works Inc.
    Inventors: Cheryl L. Panasik, Kenneth R. LeVey, Robert B. Fischer
  • Patent number: 7051565
    Abstract: There is disclosed a coldforming machine in which the rolling racks are preferably arranged in vertical direction and are adjustable via a feed means during the rolling operation in radial direction with respect to the workpiece to be formed.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: May 30, 2006
    Assignee: Ex-Cell-O GmbH
    Inventors: Bernd Kreissig, Lothar Ophey, Otto Bruentrup
  • Patent number: 6957557
    Abstract: A new and improved thread rolling die for forming a new and improved threaded fastener, and a new and improved method or technique of manufacturing the new and improved threaded fastener, is disclosed wherein the new and improved threaded fastener comprises a first, primary thread lead, and a pair of second, auxiliary thread leads alternatively interposed between successive threads of the first, primary thread lead. As a result of the provision of the pair of second, auxiliary thread leads being interposed between successive ones of the threads of the first, primary thread lead, not only is additional axial reinforcement provided for the threaded fastener, but more importantly, the lateral or transverse distance through which the material comprising the blank member must be displaced or moved in order to form the successive threads of the first, primary thread lead is substantially reduced.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: October 25, 2005
    Assignee: Illinois Tool Works Inc.
    Inventor: Kenneth R. LeVey
  • Publication number: 20040261482
    Abstract: A thread rolling dies apparatus for a thread rolling machine discloses a positioning channel formed between a first and second dies, and using a sensitive member placed in the channel and lower than the top of the channel touches with an alert driving member to make the thread rolling machine stopped when the inclined head is generated. The thread rolling dies apparatus for a thread rolling machine could inspect the wasters after the head rolling process to effectively decrease the fail off rate and enhance the quality of the product.
    Type: Application
    Filed: February 9, 2004
    Publication date: December 30, 2004
    Inventors: Ta-Hai Hung, Kun-San Yang
  • Patent number: 6712708
    Abstract: A headed multi-lobed blank, method of manufacturing a self-tapping screw from the blank, and resulting multi-lobed self-tapping screw for joining thin workpieces provides desirable thread-forming characteristics at the conical tip and body portions, and improved resistance to vibrational loosening near the head. The resulting screw, obtained from the blank and method, incorporates a threaded tapered root portion between the screw head and body portion having a cross section that varies from nearly circular in the area adjacent to the underside of the head to a maximum out-of-round (or lobular) cross section at the intersection of the tapered root portion and the screw body.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: March 30, 2004
    Assignee: Conti Fasteners AG
    Inventors: Dennis O. Boyer, Alan Pritchard
  • Publication number: 20040007034
    Abstract: There is disclosed a coldforming machine in which the rolling racks are preferably arranged in vertical direction and are adjustable via a feed means during the rolling operation in radial direction with respect to the workpiece to be formed.
    Type: Application
    Filed: December 12, 2002
    Publication date: January 15, 2004
    Inventor: Bernd Kreissig
  • Patent number: 6666059
    Abstract: A method and device for rotating and machining bar material which comprises holding a disc-shaped rotor rotatably around a horizontal axis, providing a pair of rails which are radially opposite to each other and have chord-shaped sliding surfaces in parallel with each other in the vicinity of the peripheral edge of the front end of said rotor, engaging tool holders slidably with each of said pair of rails, fixing a pair of tools securely by said tool holders, feeding a workpiece of bar material toward the center of rotation of the rotor, holding the workpiece securely between the tools, and rotating the rotor to displace the tools in the directions opposite to each other along the rails.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: December 23, 2003
    Assignee: Taihei Manufacturing Co., Ltd.
    Inventor: Takeyoshi Tsutsumino
  • Patent number: 6634078
    Abstract: A method for manufacturing a splined member, such as a male or female splined shaft, having a low friction coating applied thereto includes the initial step of providing a length of cylindrical stock having a predetermined outer diameter. The end of the cylindrical stock is then machined by any conventional process to form a preform including an end portion and a neck portion. Next, the end portion of the preform is subjected to a cold working process by a conventional roll forming machine or similar tool to form a plurality of splines about the circumference thereof. The cold working process is effective to re-shape the end portion of the preform to form the splines without the removal of any material therefrom. As a result, each of the splines is formed having a generally involute cross sectional shape, wherein opposed sides of the splines are relatively gently curved between the inner roots and the outer ends thereof.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: October 21, 2003
    Assignee: Torque-Traction Technologies, Inc.
    Inventor: Douglas E. Breese
  • Patent number: 6598453
    Abstract: A tooth rolling flat die and a method for forming a tooth are provided. The die has the same service life as those of the conventional tooth rolling flat dies using oil coolant even if conducted by semi-dry forming. A first substantially quarter length portion of the leading teeth section of the die has a first surface roughness Rz of maximum height ranging from 20 to 35 &mgr;m, and a second substantially quarter length portion of the leading teeth section of the die has a second surface roughness Rz of maximum height ranging from 5 to 20 &mgr;m. The die is adapted for semi-dry forming the tooth.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: July 29, 2003
    Assignee: Nachi-Fujikoshi Corp.
    Inventors: Yasuhiro Murai, Takahiro Kumagai, Soiti Kakutani, Masaru Sumitani
  • Patent number: 6516650
    Abstract: A thread rolling dies for producing dog point threads is capable of preventing slips of an outer surface of screw blank when rolling, thereby avoiding breakage of the dog point thread. The dog point thread has a thread portion provided with external threads and a dog point having an outer diameter smaller than an outer diameter of the thread portion. The thread rolling dies is configured with a thread portion rolling surface having a thread portion dies ridge for forming a groove of the thread portion of the dog point thread and a thread portion dies groove for forming a ridge of the thread portion of the dog point thread, and a dog point rolling surface provided in parallel with the thread rolling surface and having a dog point dies ridge for forming a groove on the dog point of the dog point thread and a dog point dies groove for forming a ridge on the dog point of the dog point thread.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: February 11, 2003
    Assignee: OSG Corporation
    Inventor: Yoshitaka Watanabe
  • Patent number: 6324887
    Abstract: Thread forming dies to form a continuous helical thread for a metal fastener. The dies are designed and constructed to eliminate laps and discontinuities in the thread form particularly in larger diameter fastener blanks. The dies are constructed by calculating a roll-off section which tapers down to expel the threaded fastener then determining the length of a dwell section having a full depth grooves to create a well-defined and stable thread. Finally, a roll-up ramp section is calculated along which the grooves of the die become deeper along its length until reaching the desired thread angle and depth. The thread forming dies include a stationary die and a moving die. The fastener blank is rolled therebetween causing the die faces to form the thread as the blank moves from the roll-up section, through the dwell section and out the roll-off section.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: December 4, 2001
    Assignee: Lake Erie Screw Corp.
    Inventor: Bill O. Sharp
  • Patent number: 6314778
    Abstract: In a rolling die as a tool for thread-rolling screws, an electrode exhaustion-melted substance or its reactive substance of a discharge electrode (5) generated by discharge energy based on an in-liquid gap discharging is adhered to an deposited onto a rolling cutting-edge surface (100b). Thus, a hard film (110) of the electrode exhaustion-melted substance or its reactive substance is formed on the rolling cutting-edge surface (100b).
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: November 13, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshio Moro, Akihiro Goto
  • Patent number: 6301945
    Abstract: A machine (10) incorporates slide assemblies (12) for adjusting the spacing between toothed forming racks (14) supported by the slide assemblies to roll form splines in a workpiece (16). Each slide assembly (12) includes a main slide (78) supported for movement on an associated base portion (30) and also includes a secondary slide (80) adjustable mounted on the main slide (78) under the control of an adjuster (76). A leading end (82) of each slide assembly (12) includes a pivotal connection (84) and a trailing end (86) thereof supports the adjuster (76) that operates in association with a fixed thrust plate (92), a movable thrust plate (94) moved by an actuator (98), and a thrust connector (96) that extends between the fixed and movable thrust plates and upon operation of the actuator pivots the secondary slide (80) about the main slide (78) in order to provide the rack spacing adjustment.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: October 16, 2001
    Assignee: Utica Enterprises, Inc.
    Inventor: Robert E. Roseliep
  • Patent number: 6250123
    Abstract: A power transmission member (20) is provided by a spline rolling method and apparatus (36) that includes a pair of racks (38) for providing splines (24) with ends (34) opposing each other in a precisely spaced relationship at an annular groove (30) that is utilized to provide snap ring or other fastener positioning for axially locating the member during use.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: June 26, 2001
    Assignee: Utica Enterprises, Inc.
    Inventor: James Thomas Killop
  • Patent number: 6149363
    Abstract: The present invention is to a lightweight threaded bolt type fastener having a shank with a large diameter portion and small diameter portion connected by a transition portion; a thread is roll formed on the small diameter portion and terminates in a run-out section where the thread gradually decreases in root depth and width and with the run-out section being of minimal axial length and being located closely adjacent the transition portion to produce a run-out zone of minimal axial length. A rolling die for forming the thread with minimal thread run-out having ridge segments with tapered end surfaces for providing the run-out thread with an end wall parallel to the transition portion and a method of making the bolt type fastener.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: November 21, 2000
    Assignee: Huck International, Inc.
    Inventor: Michael U. March
  • Patent number: 6148653
    Abstract: The present invention aims to provide a rolling system and a rolling method capable of avoiding the occurrence of a pinch fold by effectively preventing the zigzag movement of a rear end portion of a material to be rolled. The rotational speeds (rolling speeds) of work rolls (2) of a rolling mill stand (F.sub.1) from which the rear end of a plate material (6) releases, and a succeeding rolling mill stand (F.sub.2) are controlled to the same value. Moreover, the tension between the rolling mill stand (F.sub.1) and the rolling mill stand (F.sub.2) is controlled to zero. The difference in tension between a work side and a drive side can be made null between the rolling mill stand (F.sub.1) and the rolling mill stand (F.sub.2). Similarly, the difference in tension between the work side and the drive side can be made null between the plurality of rolling mill stands (F.sub.2 to F.sub.n) during release of the rear end of the plate material (6).
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: November 21, 2000
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Akira Sako, Toru Takeguchi, Syuji Maniwa, Masashi Yoshikawa
  • Patent number: 6135892
    Abstract: The present invention provides a novel fastener member, stud, or other threaded member, for engagement with a female member, and the method of assembly thereof. The fastener member has a novel point which facilitates engagement of the fastener member in the threaded bore, greatly reduces the possibility of cross-threading and is especially suited for use in applications involving blind holes or the use of very thin threaded holes. The fastener member has a threaded shank portion. A point is provided at the end of the shank portion and includes an unthreaded radiused portion and a threaded transition portion between the shank portion and the radiused portion. The major diameters of the threads of the transition portion gradually lessen between the opposite ends thereof. The radiused portion can be provided with a truncated end surface.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: October 24, 2000
    Assignee: Textron Inc.
    Inventor: Steven P. Donovan
  • Patent number: 6108909
    Abstract: A groove forming process for forming at least one groove pattern on the outer diameter of a shaft for use in a hydrodynamic bearing of a spindle motor. First, the shaft is inserted between a pair of dies, at least one of which has a groove pattern thereon. Next, the shaft is positioned so that it is perpendicular to the groove pattern and at one end of the groove pattern. By lowering the upper die, the shaft is clasped between the dies. The shaft is then rolled in a first direction over the groove pattern by simultaneously applying pressure in a vertical direction and applying pressure in a first horizontal direction to one of the pair of dies so that the shaft rolls in the first direction. The shaft is then rolled in a second direction over the groove pattern by simultaneously applying pressure in a vertical direction and applying pressure in a second horizontal direction to one of the pair of dies so that the shaft rolls in the second direction.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: August 29, 2000
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Charles J. Cheever, Frank Alton Gray, Mark Hazelton, Johannes van Witzenburg
  • Patent number: 6047581
    Abstract: A vertical rack-type spline-forming machine based on a novel slide base arrangement comprising a pair of vertical slide bases structurally joined by a symmetrically arranged set of tie bars. The structurally-joined vertical slide bases can be rested in an upright position on a non-structural space frame which provides improved access and lift capabilities to the vertical machine. The machine also includes a novel drive system using independent electric motors, one motor associated with each vertical slide base to drive the rack on that base through a roller screw shaft mechanism. The racks are further electronically synchronized through position signals communicated between the motor drives, and the rack home positions are calibrated with electronic "datums" programmed into the motor drives and capable of being re-calibrated in programmable fashion if one of the racks loses synchronicity.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: April 11, 2000
    Assignee: Anderson Cook, Inc.
    Inventors: James C. Everlove, Jr., Craig J. Everlove
  • Patent number: 5987953
    Abstract: A machine (20) for rolling power transmission formations in a workpiece includes a base (22) having spaced base portions (30) and a rear connecting base portion (32) extending between the spaced base portions which project forwardly therefrom to define a workspace (34). A headstock spindle support (48) is mounted on the rear connecting base portion (32) along a rotational axis A of the machine and is moved therealong by a headstock electric servomotor (152). A tailstock spindle support (52) is mounted on the spaced base portions (30) adjacent front ends (36) thereof to cooperate with the headstock spindle support (48) in rotatably mounting the workpiece and is also movable along the rotational axis by a tailstock electric servomotor (180). A pair of movable slides (66) respectively support a pair of forming racks (68) and are respectively supported by the pair of spaced base portions (30) within the workspace (34).
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: November 23, 1999
    Assignee: Utica Enterprises, Inc.
    Inventors: James Thomas Killop, Robert E. Roseliep
  • Patent number: 5983690
    Abstract: A machine (20) for rolling power transmission formations in a workpiece includes a base (20) having a pair of spaced base portions (30), headstock and tailstock spindle supports (48,52) that cooperate to mount the workpiece for rotation about a rotational axis of the machine and a pair of antifriction linear bearings (58) respectively associated with the pair of spaced base portions. Each bearing (58) includes a stationary carriage (60) and an elongated movable guideway (62). The stationary carriages (60) are respectively mounted on the pair of spaced base portions (30) with the rotational axis (A) of the machine (20) therebetween, and each stationary carriage (60) includes rolling elements that support the associated movable guideway (62) for movement along its length on the adjacent side of the supported workpiece.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: November 16, 1999
    Assignee: Utica Enterprises, Inc.
    Inventors: James Thomas Killop, Robert E. Roseliep
  • Patent number: 5970768
    Abstract: A machine (20) for rolling power transmission formations in a workpiece includes a base (20) having a lower end (24) for providing support thereof in an upwardly standing orientation. The base (22) includes a pair of spaced base portions (30) and a rear connecting base portion (32). The spaced base portions (30) project forwardly from the rear connecting base portion (32) to define a vertically extending workspace (34) and are secured to each other and to the rear connecting base portion by tie rod assemblies (38, 40, 42). Headstock and tailstock spindle supports (48,52) cooperate to rotatably mount the workpiece about a rotational axis (A) of the machine.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: October 26, 1999
    Assignee: Utica Enterprises, Inc.
    Inventors: James Thomas Killop, Robert E. Roseliep
  • Patent number: 5957777
    Abstract: The invention relates to a method of manufacturing fasteners such as self-piercing rivets, self-piercing studs, plugs, inserts, etc.. In such method a blank is provided and said blank is subjected to a rolling process causing material of the blank to flow radially towards said central axis and axially so as to axially lengthen the blank, with said predetermined geometry of said finished fastener being formed by said rolling process. In addition, a mandrel can be used to precisely define the geometry of the fastener. Fasteners made by the method of the invention are much cheaper than fasteners made by conventional upsetting and extrusion processes. Furthermore, the fasteners made by the method of the invention generally have the advantage of superior grain flow and closer manufacturing tolerances.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: September 28, 1999
    Assignee: Rivet Technology ( P) Ltd.
    Inventors: Jayajit Singh, Naresh Ummat
  • Patent number: 5950471
    Abstract: A vertical rack-type spline-forming machine based on a novel slide base arrangement comprising a pair of vertical slide bases structurally joined by a symmetrically arranged set of tie bars. The structurally-joined vertical slide bases can be rested in an upright position on a non-structural space frame which provides improved access and lift capabilities to the vertical machine. The machine also includes a novel drive system using independent electric motors, one motor associated with each vertical slide base to drive the rack on that base through a roller screw shaft mechanism. The racks are further electronically synchronized through position signals communicated between the motor drives, and the rack home positions are calibrated with electronic "datums" programmed into the motor drives and capable of being re-calibrated in programmable fashion if one of the racks loses synchronicity.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: September 14, 1999
    Assignee: Anderson-Cook, Inc.
    Inventor: James C. Everlove, Jr.
  • Patent number: 5943904
    Abstract: The specification and drawings describe and show a thread-rolling die whose thread-forming lands are modified at their points of emergence along the side edge of die so that the crest of the ramp formed by the emerging end of the land remains parallel to the crest of the adjacent land.
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: August 31, 1999
    Assignee: Ingersoll Cutting Tool Company
    Inventor: Rodney M. Kramer
  • Patent number: 5788441
    Abstract: The present invention provides an improved, lightweight, compact threaded fastener that has a relatively shortened transition thread rollout zone between the grip of the fastener and the threaded shank of the fastener. This transition zone is shortened due to the fact that the runout (or inner end) of the rolled thread on the fastener extends no more than one-third the circumference of the rolled thread at its pitch diameter. The short runout of the rolled thread does not compromise the strength of the fastener, because the runout does not have a relatively abrupt transition. Instead, the depth of the runout of the rolled thread of the fastener gradually decreases along its length from a depth equal to the uniform depth of the rolled thread throughout the length of the threaded shaft of the fastener to no depth at the very end of the runout. The invention further provides a pair of thread rolling dies for producing such an improved, lightweight, compact threaded fastener.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: August 4, 1998
    Assignee: West Coast Aerospace, Inc.
    Inventors: Nicholas C. Karabestos, Gary L. Stewart
  • Patent number: 5771732
    Abstract: A Steckel mill or coiler rolling mill includes at least one reversing stand and drivers and coiler furnaces arranged on the entry side and the exit side of the reversing stand, wherein the reversing stand, the drivers and the coiler furnaces are connected to one another through roller conveyors for the strip to be rolled. At least one heating unit is provided in at least one of the sections formed between the coiler furnaces and the reversing stand, wherein the heating unit covers at least a portion of the section.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: June 30, 1998
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Stephan Kramer, Dieter Rosenthal, Peter Sudau
  • Patent number: 5743123
    Abstract: In a method of thread rolling a screw shaft, an inclining portion 1c is provided between a machining portion 1a of a screw shaft 1 and a non-machining portion 1b thereof as well as a taper portion 2b is formed to screw groove forming dies 2, by which a machining load concentrating at the thread rolling portion on the end of the dies adjacent a chuck can be reduced. With this method, the screw shaft can be thread rolled to have straightness of high quality.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: April 28, 1998
    Assignee: Mitsuba Corporation
    Inventors: Masatoshi Yamamoto, Hiromasa Hosono
  • Patent number: 5720196
    Abstract: A method for continuously hot-rolling steel pieces, includes butt-joining the rear end of the preceding steel piece and the leading end of the succeeding steel piece, then finish-rolling the butt-joined steel pieces by supplying a continuous hot rolling facility provided with a plurality of stands having a bending function of a work roll. The method involves estimating the variation of the rolling force occurring during rolling the joint of the steel pieces at the non-stationary zone caused by said joint, calculating the changing bending force of the work roll during rolling the joint of the steel pieces from the estimated variation of the rolling force, and determining the pattern for changing the bending force taking account of said changing force, and rolling the joint of the steel pieces by regulating the bending force in response to said pattern over at least one stand, while tracking down the joint of the steel piece immediately after joining.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: February 24, 1998
    Assignee: Kawasaki Steel Corporation
    Inventors: Yoshikiyo Tamai, Katsuhiro Takebayashi, Toshio Imae, Hideyuki Nikaido, Kunio Isobe
  • Patent number: 5647236
    Abstract: The invention provides a method for rolling hot mill band on a hot reversing mill so as to achieve acceptable finishing temperatures for such a light gauge product. The invention also minimizes the threading of a light gauge product through the mill and decreases the likelihood of cobbles along the runout table.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: July 15, 1997
    Assignee: Tippins Incorporated
    Inventor: George W. Tippins