Cam-controlled Cutter Patents (Class 82/19)
  • Patent number: 10948056
    Abstract: An elevation mechanism for a central input selector knob includes: a cylindrical cam having two cylindrical rails; a central input device mounted on a slider cylinder having two opposite ends of a pin that run in the two cylindrical rails to move the central input device between an operation position and a storage position; a cap that has two opposite guiding ribs configured to slide into rails of a main housing, the cap being attached to the main housing such that the slider cylinder is enclosed by the main housing and the cap; and a motor having an axis where a second gear is mounted, the second gear being configured and arranged to transmit movement to a first gear thereby causing the slider cylinder to move thereby moving the central input device between the operation position and the storage position.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: March 16, 2021
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Luis Ernesto Quiroz de la Mora, Johan Gomez Martinez, Roberto Arriola Martinez
  • Patent number: 10807205
    Abstract: A machine tool for machining a workpiece has a spindle arm with a spindle for receiving a tool or workpiece. The spindle arm is movably attached to a spindle arm receiving section. The spindle arm has a first spindle arm section, being a longitudinal element, having a first rotational axis with respect to the spindle arm receiving section and is hinged to the spindle arm receiving section; a second spindle arm section, rotatable about a second rotational axis with respect to and is hinged to the first. The spindle arm receiving section has a first subsection and a second subsection, arranged on the machine column at a distance from one another to receive the spindle arm. The first spindle arm section has first and second subsections, which are arranged on the spindle arm receiving section at a distance from each other to receive the second spindle arm section.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: October 20, 2020
    Assignee: DECKEL MAHO PFRONTEN GMBH
    Inventors: Uwe Kschier, Alfred Geissler
  • Patent number: 9095916
    Abstract: Milling tool has a tool body with a fixing end, an opposite outer end, and a peripheral surface. The tool body comprises a large number of separated seats arranged at the peripheral surface one after the other along a helix line having a constant pitch. Corresponding large number of replaceable milling inserts comprise an under side, an opposite upper side forming a chip surface, a circumferential edge side, and two pairs of main cutting edges. The chip surface extends in an extension plane that comprises the main cutting edges. Each seat receives one of the milling inserts and comprises a support surface allowing support to the milling insert projecting from the tool body for cutting engagement with a gash of the workpiece. The chip surface extension plane of each milling insert has a normal parallel to the tangent of the helix line where the same intersects the extension plane.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: August 4, 2015
    Assignee: Sandvik Intellectual Property AB
    Inventors: Strure Sjöö, Mats Wennmo
  • Patent number: 9079276
    Abstract: A method for producing piston rings, in particular compression piston rings, in which at least one main element is machined in such a way that a circumferential surface serving as a running surface is provide with a wear-resistant layer of a predeterminable layer thickness, wherein a number of piston ring, in particular compression piston rings, brought together to form an assembly, are machined cylindrically in the region of their circumferential surface, a wear-resistant electrodeposited layer of chrome is applied to the finished machined cylindrical circumferential surface, so that the wear-resistant layer has a constant layer thickness within the assembly as a whole, and subsequently the layer is machined in such a way as to produce a running surface that has a region of maximum layer thickness and at least one region of minimum layer thickness.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: July 14, 2015
    Assignee: Federal-Mogul Burscheid GmbH
    Inventors: Dirk Barenreuter, Markus Kellner
  • Publication number: 20120325061
    Abstract: A machining device includes a support platform, a machining assembly, a clamping assembly, a driving assembly, and a controlling assembly. The support platform includes a first supporting member, a sliding rail mounted on the first supporting member, and a second supporting member mounted on the sliding rail. The machining assembly mounted on the second supporting member includes a machining tool. The clamping assembly is mounted on the first supporting member, for clamping and rotating the workpiece. The driving assembly is fixed to the second supporting member. The controlling assembly includes a connecting member mounted on the second supporting member and a resisting member mounted on the connecting member. The driving member drives the second supporting member to slide along the sliding rail, to make a gradual and increasing depth of contact by the machining tool on the workpiece, until a preset limit is reached.
    Type: Application
    Filed: November 22, 2011
    Publication date: December 27, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., Fu Tai Hua Industry (Shenzhen) Co., Ltd.
    Inventors: Qian-Long LIAO, Cong-Cong WANG, Jing-Hui YOU
  • Publication number: 20100107830
    Abstract: A burr elimination device for a camshaft according to the exemplary embodiment of the present invention may include: an operating cylinder configured to move a rod equipped in an end portion thereof in an up and down direction; an ascent/descent member connected to the rod of the operating cylinder; a rotation unit configured to rotate a camshaft that is held apart from the ascent/descent member and on which cam lobes are formed; a plurality of cylinder members disposed on the ascent/descent member corresponding to the cam lobes; a moving rod configured to be inserted into or drawn out of each of the cylinder members; a spring mounted inside each of the cylinder members and configured to elastically push the moving rod from the interior to the exterior of the cylinder member; and a burr elimination tool that is mounted on the end portion of the moving rod and that is configured to pivot in front/rear and left/right directions with respect to a predetermined center point for continuous elimination of a burr th
    Type: Application
    Filed: April 9, 2009
    Publication date: May 6, 2010
    Applicant: HYUNDAI MOTOR COMPANY
    Inventor: Mu Hyung Kim
  • Patent number: 6815917
    Abstract: A method for controlling an automatically operated lathe provided with at least one spindle and at least one tool rest includes the following steps. First, each of a plurality of transfer position data required in a sequence of machining programs in connection with at least one spindle and at least one tool rest is provided in a form of either one of two types of transfer position data, one of which is cam-reference data directing a transfer position as a function of a cam rotation quantity and the other is time-reference data directing a transfer position as a function of an elapsed time. Next, a time-series allocation of the cam-reference data and the time-reference data is designated in the sequence of machining programs. Then, the cam-reference data and the time-reference data are processed in accordance with the time-series allocation, so as to control a relative feed motion between at least one spindle and at least one tool rest in the sequence of machining programs.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: November 9, 2004
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Tadashi Fujinawa
  • Patent number: 6812664
    Abstract: A method for controlling an automatically operated lathe, provided with at least one spindle and at least one tool rest, includes the following steps. First, each of a plurality of transfer position data required in a sequence of machining programs in connection with at least one spindle and at least one tool rest is provided in a form of a cam-reference data directing a transfer position as a function of a cam rotation quantity. A plurality of pulse-train generating sources, each of which generates any pulse train, is also provided. Next, with regard to each of the plural transfer position data, a pulse-train generating source for generating a pulse train defining the cam rotation quantity as one component of the cam-reference data is designated, with the pulse-train generating source being selected from the plural pulse-train generating sources.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: November 2, 2004
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Tadashi Fujinawa
  • Patent number: 6357326
    Abstract: A shape outlining device for a user to easily mark or cut a predetermined shape on a surface. The shape outlining device includes a post assembly with a lower end for resting on a surface and an upper free end. A spool base has a central shaft with an upper and lower flange. A cam with a profile surface for determining a shape to be outlined on the surface is removably mounted on the central shaft of the spool base. The cam has a central passage through which the central shaft is received with the cam resting on the upper flange of the post assembly. A spool grip is placed over the spool base for permitting hand gripping of the post assembly. The spool grip has an upper and lower flange, and a sleeve with a central aperture that receives the central shaft of the spool base. An arm assembly is removably and rotatably mounted on the post assembly by way of a central tube member that receives and rides on the flanges of the spool base and the spool grip.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: March 19, 2002
    Inventor: James D. David
  • Patent number: 5842395
    Abstract: A lathe for producing an aspherical surface on an optical lens blank has a horizontal base, and a spindle is arranged for disposition in a preselected adjusted position on the base to rotatably mount the optical lens blank about a first preselected axis. A support is arranged on the base for pivotal movement about a second preselected axis. The support includes a roller cam follower rotatable about a third preselected axis and having a cylindric cam follower surface, a cutting tool disposed in a preselected adjusted position on the support for forming the aspherical surface on the optical lens blank, and a fluid pressure motor conjointly urging the roller cam follower and the cutting tool in a direction generally perpendicular to the third preselected axis.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: December 1, 1998
    Inventor: Larry Gene Hall
  • Patent number: 5694819
    Abstract: The invention concerns a special process and a device for the form cutting and form turning of work pieces. It is proposed, for a processing of this type for the purpose of production of unround geometries of this type as well as also work pieces as also the machining tool to rotate with a precisely defined opposingly radially spacing, preferably in the like direction of rotation, and thereby the number of rotations of the two rotating components with a determined like rotation number relationship so to correspond with respect to each other, that a simple cutter of the machining tool during its orbit about 360.degree. comes into contact with the work piece to be machined only in a partial sector of an "active" sector. Thereby it is so controlled according to the invention within this machining sector and forcibly guided by means of a curve disk in a radial plane, that out of the relative movement to the rotating work piece the geometry to be machined is produced.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: December 9, 1997
    Inventor: Gerd Hormansdorfer
  • Patent number: 5435215
    Abstract: An ornamental turning device (10) comprises a shaft (11) on which is mounted a work to be decorated. The device (10) also comprises tool drive means (5) for driving a tool (7) for decorating the work (9). The driving mechanism (5) ensures that the reciprocating blade of tool (7) reciprocates at a rate proportional to the rate of rotation of the shaft (11).
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: July 25, 1995
    Inventor: Martin Thompson-Oram
  • Patent number: 5431076
    Abstract: An apparatus adapted for trimming a plastic covering from a mouth opening of a blow-molded universal urinal includes a retaining block for rigidly holding the urinal in position opposite a trimming apparatus. The apparatus mechanically moves a knife mounted thereon in an oval pattern in one plane while simultaneously moving the knife in an alternately concave and convex pattern in a second plane orthogonal to the first plane. The knife is mounted on a platform which is itself movable in the second plane independently of the movement of the knife. As the platform is moved toward the urinal mouth, the knife is moved in the described pattern, thus smoothly trimming the urinal mouth.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: July 11, 1995
    Assignee: Ralph E. Hastings
    Inventor: Bryan G. McPhail
  • Patent number: 5211089
    Abstract: A cam-controlled tube end finishing apparatus includes a cutting bit having multiple cutting faces, a platform supporting the cutting bit adjacent to the end of a rotating hollow tube, and a pair of cam-controlled mechanisms for moving the platform and thereby the cutting bit relative to the end of the rotating tube along a closed polygonal path of travel for severing the tube end. An initial portion of the rotating tube is severed in a direction from the outside to the inside of the tube at an angle to a plane normal to the rotational axis of the tube so as to define an initial cut face on the tube end extending in inclined relation to a plane normal to the rotational axis of the tube. A final portion of the rotating tube is severed in a direction from the inside to the outside of the tube at another angle to a plane normal to the rotational axis of the tube so as to provide a substantially burr-free cut face on the tube end extending in a plane normal to the rotational axis of the tube.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: May 18, 1993
    Assignee: Westinghouse Electric Corp.
    Inventor: Albert B. Cady
  • Patent number: 5181442
    Abstract: A machine tool employs a cam, driven in response to an angular position signal of a workpiece, to cyclically displace a cutting tool with respect to the workpiece.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: January 26, 1993
    Assignee: Kabushiki Kaisha Shoun Kosakusho
    Inventor: Masahiro Nezu
  • Patent number: 5022293
    Abstract: A method for producing workpieces with surfaces of non-circular but regular cross-sections with a working tool, wherein the workpiece is rotated about its own axis and the axis of the workpiece is rotated around an axis being eccentric to the axis of the workpiece and the two rotations being brought into a certain relationship according to the surface to be generated. According to the invention the axis of the workpiece is rotated mechanically independently from the eccentric axis and the relationship between the two rotations is established and maintained by an electrical control into which parameters of the surface to be produced are fed and with which the rotations of the axis are monitored and, in dependency of the fed-in and monitored factors, into rotational drives of the axes is interfered, respectively.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: June 11, 1991
    Assignee: Innofinance Altalanos Innovacios Penzintezet
    Inventors: Jozsef Farkas, Sandor Vekony, Sandorne Vekony, Erno Csovak, Sandor Fodor
  • Patent number: 5010793
    Abstract: A workpiece (1) is fixed by means of a chuck (4) and rotates with a spindle (3) in a headstock (2). A first cam (30) is fixed to the main shaft of the spindle. Its control surface guides a feeler roller (31). A rotary pulse generator (8) is actuated by the rotation of the spindle shaft. An auxiliary motor (10) is disposed on a cross-slide (12) and causes an auxiliary shaft (21) to rotate. The pulse generator produces synchronization between the spindle shaft and the auxiliary shaft. The latter bears a second cam. According to the position of the cross-slide, the exact location of teh tools (16, 17) is determined by the first cam or by the second.
    Type: Grant
    Filed: May 2, 1989
    Date of Patent: April 30, 1991
    Assignee: Kummer Freres SA Fabrique de machines
    Inventor: Hans J. Leiber
  • Patent number: 4995300
    Abstract: A lathe is provided for generating surfaces on work pieces and which includes a spindle for support of a work piece while it is revolved and against which a cutting tool is caused to traverse. A tool supporting turret assembly is provided to hold the cutting tool and effect its movement over a path under control of a cam assembly that includes a roller cam having a cylindrical surface. The turret assembly includes a cam follower having a V-shaped configuration which is caused to bear against the roller cam and to move with respect to the cam roller in a manner to result in forming of a surface on the work piece that is of a predetermined configuration through cooperative relative movement in the orientation of the cam follower with respect to the roller.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: February 26, 1991
    Assignee: Chariot Star, Inc.
    Inventors: Samuel S. Kaplan, Donald S. Dill
  • Patent number: 4964321
    Abstract: An auxiliary shaft (16) mounted coaxially with a main shaft (5) has at the top an eccentric (17) operatively connected via grooving (20, 21) to a tool-fastening plate (13). At the bottom of the auxiliary shaft is a wheel (19) fixed to the eccentric and provided with a recess (18). The recess can engage a fixed lug cam so that a feed motor can cause both the rotary movement of the ball turner and a tool correction effected by a relative rotary movement between the main shaft and the auxiliary shaft. For the sake of accuracy, the angular displacement is limited to an area in which the displacement of the tool-fastening plate caused by the eccentric is substantially linear with the angular displacement. All rotary motions are measured during the operation by a shaft encoder (9) and communicated to a CNC system.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: October 23, 1990
    Assignee: Kummer Freres Sa Fabrique de Machines
    Inventors: Hans-Jurgen Leiber, Jean-Philippe Meyer, Christian F. Kummer
  • Patent number: 4939963
    Abstract: For high-precision material-removing machining of the lateral surface of a workpiece (1) rotating with the main spindle (3) of a turning lathe, a cutting tool (17) is fixed on a slide (14) which carries out an axial movement synchronized with the rotation of the main spindle by means of a cam assembly (18, 21, 20) control. The shaft (21) of the cam assembly is rotation-tightly coupled to the main spindle by electric means (8, 10).
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: July 10, 1990
    Assignee: Kummer Freres Sa Fabrique De Machines
    Inventor: Hans-Jurgen Leiber
  • Patent number: 4887500
    Abstract: An auxiliary shaft (16) mounted coaxially with a main shaft (5) has at the top an eccentric (17) operatively connected via grooving (20, 21) to a tool-fastening plate (13). At the bottom of the auxiliary shaft is a wheel (19) fixed to the eccentric and provided with a recess (18). The recess can engage a fixed lug cam so that a feed motor can cause both the rotary movement of the ball turner and a tool correction effected by a relative rotary movement between the main shaft and the auxiliary shaft. For the sake of accuracy, the angular displacement is limited to an area in which the displacement of the tool-fastening plate caused by the eccentric is substantially linear with the angular displacement. All rotary motions are measured during the operation by a shaft encoder (9) and communicated to a CNC system.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: December 19, 1989
    Assignee: Kummer Freres SA Fabrique de Machines
    Inventors: Hans-Jurgen Leiber, Jean-Philippe Meyer, Christian F. Kummer
  • Patent number: 4856105
    Abstract: A method of making self-tensioning rings, including the steps of circumferentially machining an out-of-round ring blank on inner and outer surfaces thereof and subsequently cutting a ring segment out of the ring for obtaining a ring gap therein; measuring a circumferential contour of the ring subsequent to the machining step; and calculating the circumferential length of the ring segment and a cutting angle for removing the ring segment from the ring as a function of data obtained in the measuring step.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: August 8, 1989
    Assignee: Goetze AG
    Inventors: Manfred Brocksieper, Rolf Luckger, Hans-Gerd Kroschel, Jochen Stechow
  • Patent number: 4852436
    Abstract: Apparatus and method is disclosed for forming an elliptical surface in a mirror 10. The mirror blank is rotated about a given axis and the cutting tool tip 24 is pivoted about an axis C which is generally perpendicular to and spaced from the workpiece axis 16. As the cutting tip 24 moves in an arcuate path about point C the instantaneous radius R between the cutting tip and the C axis is adjusted by way of a linkage 34 which translates movement generated by a cam surface 36 and follower arm 32 into horizontal movement of the tool cutting tip 24.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: August 1, 1989
    Assignee: Hughes Aircraft Company
    Inventor: Roland J. Benjamin
  • Patent number: 4683788
    Abstract: The invention describes a method and a device for processing by chip-cutting of workpieces. It is preferentially applied for the cross-cutting and chamfering of extruded plastics material tubes. A chip-raising or cutting tool may be fed forward radially with respect to a rotational displacement of the workpiece in the direction of a center of relative rotation. An undulant approach motion is superimposed over the feed motion of the tool. The undulant approach motions of two directly consecutive revolutions are displaced in phase. As a result chip cuttings of uniform and predetermined length are produced with consequent facility in removal and avoidance of interference with the cutting operation.
    Type: Grant
    Filed: January 17, 1986
    Date of Patent: August 4, 1987
    Assignee: Bergsmann Apparatebau Gesellschaft m.b.H. & Co. KG.
    Inventors: Kurt Kronawittleithner, Alfred Pfarrsbacher
  • Patent number: 4679472
    Abstract: Machining the circumferences of workpieces, particularly piston rings, in a variety of out-of-round contours and diameters requires only a single copying disc having a basic out-of-round contour. The copying disc is driven in synchronism with the angle of rotation alpha of piston rings to be machined by a direct current servomotor and, in order to generate the desired out-of-round contour, is caused to deviate from its synchronous movement by pulses received from a computer for the leading and lagging difference angles of rotation delta phi. An adjustable coupling member is provided between a copying disc sensor (such as a double lever) and the tool holder for transferring the out-of-round contour from the copying disc to the workpiece.
    Type: Grant
    Filed: December 17, 1985
    Date of Patent: July 14, 1987
    Assignee: Goetze AG
    Inventors: Otto Feller, Manfred Brocksieper, Rolf Luckger
  • Patent number: 4671146
    Abstract: A cross slide contour forming box tool and base which can be applied to automatic screw machines for contour forming desired contours of desired width on the outside of a workpiece. The contour forming tool is positioned on a transverse slide perpendicular to the drive axis. The transverse slide is driven by a pin and cam groove in the face of a cam so that the contour forming tool is positioned in accordance with the shape of the cam groove. The workpiece is rotated relative to the contour forming tool and the desired contour is formed on the surface of the workpiece. The contour forming tool is carried by a base including a slide and cam which functions to move the box tool parallel to the center line of the workpiece in order to form a desired contour width.
    Type: Grant
    Filed: November 7, 1985
    Date of Patent: June 9, 1987
    Assignee: Wheeler Tool Company
    Inventor: Harold E. Wheeler
  • Patent number: 4646595
    Abstract: In a machine tool, the tool is moved using a signal representing a required profile of the surface being machined. This signal is fed to a transducer, such as a piezoelectric crystal or a D.C. linear motor, which converts the signal into a corresponding linear movement which is transmitted to the tool. The tool can also be vibrated ultrasonically during machining. Such machines can be used for producing workpieces which are non-circular in cross-section and/or which are barrelled or tapered along their length.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: March 3, 1987
    Assignee: AE PLC
    Inventor: Roger H. Slee
  • Patent number: 4646596
    Abstract: A machine tool for machining rotating workpieces at high rotational speeds and, in particular, with multiple tool movements within a revolution of the workpiece, comprises a low-inertia high-torque motor having an output shaft and a tool holder mounted for movement relatively to the motor. A cam or other single element connection drivable connects the output shaft and the tool holder and the motor can be operated by control apparatus to so oscillate the output shaft that the tool is moved rapidly back and forth in phase with the output shaft oscillation and in correspondence with the rotation of the workpiece to perform required machining movements.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: March 3, 1987
    Inventors: Walter C. Edwards, Robert J. H. Winterbottom
  • Patent number: 4624159
    Abstract: The pedestal of the accessory apparatus, to be secured to the cross-slide of an automatic lathe, has a sliding guide arrangement for a bearing box in which a rotor is hydrostatically mounted for rotational and longitudinal movement. The rotor is held by a spring with its hydrostatically supported feeler-roll against a control curve which is accommodated encased in the bearing box. The rotor is connected by a sliding key connection to a key shaft seated fast on the shaft of an electric motor secured to the bearing box. The rotor is equipped at its front end with a slide plate guided for radial displacement, to which two diametrically opposite tools are secured. With one of these tools, an outside cylindrical surface adjoining a shoulder is machined on a non-rotating workpiece, whereupon the workpeice is rotated through 180.degree. so that the shoulder can be machined with the aid of the other tool, the slide plate being radially displaced on the rotor until it reaches a stop position.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: November 25, 1986
    Assignee: Kummer Freres SA, Fabriques de Machines
    Inventors: Francis H. Kumer, Hans J. Leiber
  • Patent number: 4612834
    Abstract: A cross slide contour forming box tool which can be applied to automatic screw machines for contour forming desired contours on the outside of a workpiece. The contour forming tool is positioned to a transverse slide perpendicular to the drive axis. The transverse slide is driven by a pin and cam groove in the face of a cam so that the contour forming tool is positioned in accordance with the shape of the cam groove. The workpiece is rotated relative to the contour forming tool and the desired contour is formed on the surface of the workpiece.
    Type: Grant
    Filed: November 2, 1982
    Date of Patent: September 23, 1986
    Inventor: Harold E. Wheeler
  • Patent number: 4607461
    Abstract: The incremental very accurate positioning device is operable to control accurate positioning of a movable member such as a tool. The apparatus comprises a base with a mounting bar spaced from the base for mounting the member. The bar is movable along its elongate axis by a drive force applied to the proximal end thereof for moving the distal end forwardly and rearwardly along the axis. The bar is mounted on two parallel spaced elongated flat springs that extend transversely of the bar. The springs are fixed to the bar for maintaining an axial force on the bar and are mounted at each end to a block which is pivotally mounted on the base.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: August 26, 1986
    Inventor: Charles Adams
  • Patent number: 4584916
    Abstract: A lead face machining apparatus for machining a lead face on a cylindrical workpiece. The apparatus includes a spindle unit having the workpiece rotatably mounted on it, an end cam provided rotatably together with the spindle, a first slide table and a second slide table such that each of the spindle unit, first slide table and second slide table has a static pressure fluid bearing structure. The apparatus is further provided with means for supplying fluid to the static pressure fluid bearings in common, whereby the workpiece is least subjected to vibration produced through contact of the end cam by a lead machining unit for machining the workpiece.
    Type: Grant
    Filed: July 21, 1982
    Date of Patent: April 29, 1986
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mamoru Inoue, Morimichi Hasegawa, Shozi Hara, Kiyokazu Imanishi, Yoshiyuki Kubota, Haruhiko Kitagawa
  • Patent number: 4584915
    Abstract: A device imparts a predetermined motion to an object by using a cam. The device comprises a load compensator disposed at any desired position in a driven section and adapted to apply a force or torque to the driven section in order to counterbalance variations in the force of contact between a cam and a cam follower. The variations are caused by the movement of the driven section. The force of contact is maintained at a constant value, and enables the achievement of stabilized high-precision motion of the cam driven system, particularly the achievement of high-precision high-speed machining of the lead on a VTR lower cylinder by using an end cam.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: April 29, 1986
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Ichiyanagi, Kiyokazu Imanishi
  • Patent number: 4576068
    Abstract: A cam-controlled boring bar system (100) includes a first housing (152) which is rotatable about its longitudinal axis (154), and a second housing in the form of a cam-controlled slide (158) which is also rotatable about the axis (154) as well as being translatable therealong. A tool-holder (180) is mounted within the slide (158) for holding a single point cutting tool. Slide (158) has a rectangular configuration and is disposed within a rectangularly configured portion of the first housing (152). Arcuate cam slots (192) are defined within a side plate (172) of the housing (152), while cam followers (194) are mounted upon the cam slide (158) for cooperative engagement with the cam slots (192). In this manner, as the housing (152) and slide (158) rotate, and as the slide (158) also translates, a through-bore (14) having an hourglass configuration will be formed within a workpiece (16) which may be, for example, a nuclear reactor steam generator tube support plate.
    Type: Grant
    Filed: February 3, 1984
    Date of Patent: March 18, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Raymond H. Glatthorn
  • Patent number: 4552045
    Abstract: A positioning device includes an X-direction slide table and a Y-direction slide table which are slidable in directions perpendicular to each other. Stops are adjustable as to their relative positions with respect to the slide tables to define accurate stop positions of the slide tables. Cams and levers shift the slide tables. Biasing devices bias the slide tables against the stops. A linear drive shifts at least one of the slide tables over a predetermined distance against the respective biasing device.
    Type: Grant
    Filed: March 15, 1983
    Date of Patent: November 12, 1985
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mamoru Inoue, Shoji Hara, Morimichi Hasegawa, Kiyokazu Imanishi
  • Patent number: 4528876
    Abstract: A crankshaft lathe of the single spindle pin type capable of universal use with a variety of types of crankshafts. The lathe includes a single tool support mounted upon ways for movement both perpendicular and parallel to the workpiece axis. A single drive motor powers both workpiece rotation and tool movement through an indexable connection wherein the relative angular relationship between workpiece and tool drive is adjustable. Automatic controls permit the lathe to individually machine the pins sequentially of a multiple pin crankshaft.
    Type: Grant
    Filed: May 11, 1983
    Date of Patent: July 16, 1985
    Assignee: Crankshaft Machine Company
    Inventors: John E. Logue, Samuel M. Worthington
  • Patent number: 4505627
    Abstract: A cross slide contour form milling box tool which can be applied to automatic screw machines for contour form milling desired contours on the outside of a workpiece. The contour milling tool is positioned to a transverse slide to the drive axis. The transverse slide is driven by a pin and cam groove in the face of a cam so that the contour form milling tool is positioned in accordance with the shape of the cam groove. The milling cutter is positioned in the transverse slide and rotated by an auxiliary shaft which is driven by gears from the cam shaft using an Oldham coupling to rotate while reciprocating. The workpiece is rotated relative to the contour milling tour and the desired contour is form milled on the surface of the workpiece.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: March 19, 1985
    Assignee: The Wheeler Tool Company
    Inventor: Harold E. Wheeler
  • Patent number: 4479292
    Abstract: A polygon box tool for use with different machine tools by which a cutting and boring operation may be performed simultaneously. The polygon box tool may be used for turning a hexagon shape on the outside diameter of the workpiece while simultaneously turning flats on a smaller diameter in front of the hexagon contour.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: October 30, 1984
    Assignee: Wheeler Tool Company
    Inventor: Harold E. Wheeler
  • Patent number: 4406192
    Abstract: Apparatus for machining the planar side face of a piston ring having a cutting tool holder reciprocable with respect to the planar side faces of the piston rings in the axial direction thereof. A cutting tool is secured to the cutting tool holder so that it cuts the side face of the piston ring from the axial direction to reduce the amount of cutting depth of the undercut portion on the ring.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: September 27, 1983
    Assignee: Kabushiki Kaisha Riken
    Inventor: Masahiko Wada
  • Patent number: 4309926
    Abstract: A method for the preparation of a spherical hob for generation of a gear, which has a plurality of hob blades formed on the surface of a spherical hob blank, is disclosed. This method comprises forming spirally on the peripheral surface of the hob blank projections having a section defining an involute tooth profile by means of a cutting tool, cutting and forming a plurality of blade spaces intersecting said projections to thereby form a plurality of spirally continuous hob blades, and forming reliefs on the side faces and peripheral face of each hob blade so that as the blade faces of the hob are cut, the tooth profile of each hob blade corresponds to the tooth profile before cutting with a certain amount of addendum.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: January 12, 1982
    Inventor: Masato Ainoura
  • Patent number: 4302992
    Abstract: A lathe type piston turning machine wherein a single point cutting tool is controlled simultaneously by two separate cams to generate a desired contour on a piston which varies in both radial and axial cross section.
    Type: Grant
    Filed: January 17, 1980
    Date of Patent: December 1, 1981
    Assignee: F. Jos. Lamb Company
    Inventor: Frank C. Skrentner
  • Patent number: 4299061
    Abstract: The invention provides apparatus and a method for use in machining cam profiles, and is suitable for use in grinding, milling, turning or otherwise forming cams. A workpiece, i.e. a cam blank, is rotated adjacent a machine tool (e.g. a grinding wheel) and is moved relative thereto laterally of its axis of rotation so that stock is removed from the workpiece to form a predetermined cam profile thereon. At the same time, the angular displacement of the workpiece relative to a datum is continuously monitored and the rotational speed of the workpiece is varied in dependence on its instantaneous angular displacement so that the stock can be removed at a substantially constant rate, preferably defined by a predetermined program corresponding to the particular cam profile to be machined on the workpiece.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: November 10, 1981
    Assignee: The Newall Co., Ltd.
    Inventors: John D. Parnum, Nigel T. Barber
  • Patent number: 4282784
    Abstract: A method and apparatus for circumferentially machining an out-of-round workpiece in which the workpiece is rotated about its longitudinal axis at an irregular angular speed.
    Type: Grant
    Filed: June 5, 1979
    Date of Patent: August 11, 1981
    Assignee: Goetze AG
    Inventors: Otto Feller, Heinz Oepen, Manfred Kuhl, Alois Skrobek, Horst Bornefeld, Hans G. Seiler, Walter Johann
  • Patent number: 4261235
    Abstract: The cutter head for the traced rough turning of rod-like workpieces includes a rotary base ring provided with a plurality of radial guideways. A supporting member in the form of a slide carriage movable on the radial guideways supports an elongated blade holder which is pivotable about a hinge point laterally offset from the guideways. The free end of each blade holder carries an inserted blade and is spring biased against the workpiece at the center of the base ring by a set of biasing springs supported on the slide carriage. A tracer pin adjoins the cutting blade and its vertical position is adjustable relative to the main cutting edge to determine the thickness of the cuttings. The point of contact of the cutting edge relative to the center of the hinge joint forms with a tangent line passing through the contact point an angle between 10.degree. to 25.degree..
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: April 14, 1981
    Assignee: Th. Kieserling & Albrecht
    Inventor: Klaus Scholz
  • Patent number: 4215604
    Abstract: A steady is coupled to a longitudinal slide and comprises a driven chuck. A milling tool is carried by a tool slide, which is slidably mounted on the longitudinal slide for a transverse movement derived from the rotation of the workpiece. To prevent a sagging or twisting of the workpiece or inaccuracies resulting from thermal expansion and also to eliminate the need for complicated driven chucks in workpiece carriers and to enable a milling of cross-sections to very close tolerances, two workpiece carriers are provided with non-driven workpiece supports whereas drive means for rotating the workpiece are associated only with the chuck of the steady. The control of the transverse movement of the tool slide is derived from the rotation of the chuck or of the means for rotating the same.
    Type: Grant
    Filed: November 8, 1978
    Date of Patent: August 5, 1980
    Assignee: GFM Gesellschaft fur Fertigungstechnik und Maschinenbau Aktiengesellschaft
    Inventor: Gottfried Blaimschein
  • Patent number: 4215603
    Abstract: A machine for machining brake drums wherein the cutting tool is cyclically retracted axially on its rotating spindle at a rate corresponding to the axial feed rate of the spindle and then quickly advanced on the spindle to the same extent so that the tool marks on the machined surface comprise a series of circular, rather than helical, grooves with relatively short, axially inclined grooves connecting the successive circular grooves.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: August 5, 1980
    Assignee: F. Jos. Lamb Company
    Inventor: Robert P. Jones
  • Patent number: 4210040
    Abstract: In a turning machine or the like having a tool for simultaneous axial and radial profiling of work, that invention which includes a rotatable spindle having a forward end and work support means on the forward end, circumferential profiling means rotatably mounted on the spindle and a carriage support mounted on the machine adjacent the spindle, a movable tool support carrier on the carriage support movable in a direction generally parallel to the spindle axis, a tool holder mounted in the tool support carrier for movement parallel to and radially of said spindle axis and the tool holder including longitudinal profiling means and including tracking means mounted between the circumferential profiling means and the longitudinal profiling means for simultaneously tracking both of the profiling means.
    Type: Grant
    Filed: December 28, 1978
    Date of Patent: July 1, 1980
    Assignee: Hardinge Brothers, Inc.
    Inventor: Ivan R. Brown
  • Patent number: 4210038
    Abstract: An automatic or semi-automatic lathe especially useful for producing pre-determined optical surfaces on plastic contact lenses. A collet supported on the spindle of a variable speed motor supports a lens blank in coaxial alignment with the spindle. A cutter is held in a vertically adjustable tool post mounted on one of a pair of stacked stages arranged for linear movement radial and axial of the lens blank, respectively. The other stage is mounted on a carriage which in turn is mounted on the base of the lathe and arranged for linear movement radial of the lens blank. A second variable speed motor acting through a pair of cam-operated X/Y drive mechanisms supported on the carriage drives the stages to move the cutter across and into the face of the rotating lens blank, thereby generating any desired combination of concave and/or convex optically curved surfaces. In an alternative embodiment, individual variable speed motors power the X/Y drive mechanisms through sliding wedges or the like.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: July 1, 1980
    Assignee: Continuance Curve Contact Lenses, Inc.
    Inventor: Edward G. Hill
  • Patent number: 4143564
    Abstract: Selected circumferential and axial profiles are formed simultaneously on a rotating workpiece by apparatus that comprises a carrier that is mounted for movement toward and away from the workpiece and carries a cutting element which is pushed by a spring into engagement with the workpiece. The carrier simultaneously follows a circumferential cam that rotates conjointly with the workpiece and an axial cam that is mounted on a follower bar. The follower bar is mounted on the carrier for movement relative to the carrier solely along an axis parallel to and spaced from the axis of rotation of the workpiece.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: March 13, 1979
    Assignee: Hardinge Brothers, Inc.
    Inventor: Richard L. DeBiasse
  • Patent number: 4085634
    Abstract: Cam and cam follower apparatus in which the cam follower comprises a body having a cavity at one end and a diamond material filling the cavity. The cam member is substantially cylindrical and has a longitudinal axis about which the cam member is curved. The cam follower has a diamond material working surface which is curved in planes parallel to the longitudinal axis of the cam and is maintained in following engagement with the cam. As a result, the cam and follower have intersecting arcuate surfaces providing for substantially point contact between the surfaces, with the point being located on the diamond material. This arrangement provides for improved efficiency in the operation of the cam and the cam follower because it materially reduces wear of the follower. Thus, increased accuracy in the shape and size of the products being formed can be maintained. The hardness of the diamond filling material insures this improved efficiency.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: April 25, 1978
    Assignee: LaSalle Machine Tool, Inc.
    Inventor: Robert I. Sattler