Screw Patents (Class 407/87)
  • Patent number: 8246277
    Abstract: A tool holder for clamping an insert holder has a main block, two clamping members and a single adjustment member. The main block has a longitudinal side surface with a longitudinal groove with upper and lower walls. The two clamping members include mirror symmetrical left and right clamping members interfacing with two inclined non-parallel planar ramping surfaces of the lower wall of the longitudinal groove. A blade-shaped insert holder is mounted in the longitudinal groove on the two clamping members. The adjustment member interfaces with the two clamping members, and when rotated causes each clamping member to move up its respective non-parallel planar ramping surface, decreasing the distance between the two clamping members and the upper wall of the longitudinal groove until a clamping force is uniformly applied between the insert holder and the upper wall of the longitudinal groove.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: August 21, 2012
    Assignee: Iscar, Ltd.
    Inventor: Gil Hecht
  • Patent number: 8197161
    Abstract: A chip-removing tool, includes a basic body, at least one cutting body attachable to the basic body and having at least one geometrically defined cutting edge. An adjusting device has an adjusting element expandable by an adjusting screw. The adjusting element is a slotted ring which is supported, on the one hand, on the cutting body and, on the other hand, on the basic body of the chip-removing tool.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: June 12, 2012
    Assignee: Mapal Fabrik fur Prazisionswerkzeuge Dr. Kress KG
    Inventor: Rudolf Strom
  • Patent number: 8075228
    Abstract: The invention relates to a milling cutter head having a number of blade supports (11) which are inserted in recesses of a base body (10) and have blades (12), wherein each blade support can be axially displaced by a wedge and fixed in the milling cutter head by clamping elements. According to the invention, the blade supports each have a shank which is arranged in a receiving bore of the base body and can be fixed via a centrally (13) located clamping piece (18).
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: December 13, 2011
    Assignee: Kennametal Widia Produktions GmbH & Co. KG
    Inventors: Markus Heinloth, Ralf Klötzer, Manfred Bauer, Günther Gnibl, Helmut Klein
  • Publication number: 20100178118
    Abstract: A cutting tool has an adjustment mechanism for adjusting the location of a cutting insert seated therein. The cutting tool has a tool body provided with an adjustment bore and an abutment member bore intersecting the adjustment bore, and also has an abutment member and a worm screw. The abutment member is located in the abutment member bore and the worm screw is located in the adjustment bore and screw threaded into the worm screw bore. The abutment member is located in a first location along the abutment member bore when the worm screw is in a first screw rotated position and the abutment member is located in a second location along the abutment member bore when the worm screw is in a second screw rotated position.
    Type: Application
    Filed: December 15, 2009
    Publication date: July 15, 2010
    Applicant: Iscar, Ltd.
    Inventor: Gil Hecht
  • Patent number: 7682108
    Abstract: The disclosure provides a device for adjusting a position of a cutting insert, the device may include an adjustment screw, an adjustment wedge adapted to receive the screw, wherein a position of the wedge is a function of the rotation of the screw and a partially flexible intermediate member between a surface of the wedge and a surface of the cutting insert, wherein the intermediate member is supported on both ends. The disclosure further provides a cutting tool adapted to receive at least one device for adjusting a position of a cutting insert, wherein the device may include an adjustment screw, an adjustment wedge adapted to receive the screw, wherein a position of the wedge is a function of the rotation of the screw and a partially flexible intermediate member between a surface of the wedge and a surface of the cutting insert, wherein the intermediate member is supported on both ends.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: March 23, 2010
    Assignee: Iscar, Ltd.
    Inventors: Amir Satran, Alexander Koifman, Alexander Bronshteyn
  • Publication number: 20090047077
    Abstract: An expandable/compressible slot and/or opening may be formed by machining a tool holder body. The slot and/or opening may receive a tool and secure it therein utilizing the inner surface of the slot and/or opening. Adjustment members may be utilized for compressing and/or expanding the slot and/or opening to permit insertion and/or removal of the tool.
    Type: Application
    Filed: August 13, 2007
    Publication date: February 19, 2009
    Inventor: Billy Fielder
  • Publication number: 20090010722
    Abstract: A boring bar that allows direct tuning includes a blade holder disposed at a terminal of a blade shaft; a blade central axis is disposed to the blade holder; another central axis for tuning is disposed at where by the side of blade holder; the tuning central axis and the central axis of execute angular deflection clockwise or counterclockwise to change precision of tuning amount.
    Type: Application
    Filed: July 5, 2007
    Publication date: January 8, 2009
    Inventor: Hsin-Tien CHANG
  • Patent number: 6702528
    Abstract: A tool includes a holder body having a pocket which has a bottom surface and at least one upstanding support surface. A cutting insert is provided in the pocket, the cutting insert having a side surface structure. The support surface is provided with a cavity which contains a rounded member (e.g., a cylindrical pin). The rounded member is stationarily mounted in the cavity, and a portion of a convexly rounded outer surface of the rounded member protrudes past the cavity and into the pocket. A securing element is attached to the holder to force a side surface of the insert against the convexly rounded surface.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: March 9, 2004
    Assignee: Seco Tools AB
    Inventor: Mikael Jansson
  • Patent number: 6623216
    Abstract: A tool holder for mounting a cutting insert for chip removing machining includes a head on which is disposed an insert-receiving seat having an insert-support surface. A plate-shaped member is detachably mounted on the head and includes first and second fingers. The fingers include respective first and second side surfaces forming a recess therebetween. The side surfaces are arranged in upstanding relationship with the insert-support surface to form therewith the insert-receiving seat. The first finger includes a through-slot and is flexible, wherein the first side surface is elastically displaceable relative to the second side surface. An intermediate portion of each of the side surfaces includes a recess wherein each of the side surfaces defines a plurality of spaced-apart contact areas. The plate-shaped member and the head include serrations which are in meshing relationship, except at locations which permit the first finger to be elastically deformed relative to the second finger, by an adjusting screw.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: September 23, 2003
    Assignee: Sandvik AB
    Inventor: Per Hansson
  • Patent number: 6340274
    Abstract: In an interference fit type cutting tool according to the present invention, a projection 8 of an edge section 2 and a hole portion 10 of a shank section 3 are fitted by shrinkage fitting. The shank section 3 is provided with an insertion hole 14 that is coaxial with the center axis O2 thereof, and a threaded hole 14b is provided in a part thereof. A rodlike set screw 15 is in threaded engagement with the insertion hole 14, and a leading end portion 15a thereof can project into a space 13 between the projection 8 and the hole portion 10. By screwing the set screw 15 in to press an end face 8b of the projection 8 of the edge section 2 in a heated state, the edge section 2 can be detached from the shank section 3, and the edge section 2, the shank section 3, and the like can be replaced without causing the problem of waste oil disposal and without chipping the edge section 2 or the like.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: January 22, 2002
    Assignee: Mitsubishi Materials Corporation
    Inventors: Hiroshi Shimomura, Hidehiko Nagaya
  • Patent number: 6231276
    Abstract: In addition to having a stop member in the form of a hollow cylinder which is slotted and can be spread by means of an adjustment screw, an adjustable stop for a cutter adjustably arranged in a main casting or body of a tool is also provided with a sleeve member which can be inserted into a longitudinal bore of the stop member. The sleeve member has inside threads which can be brought into engagement with the adjustment screw. This results in an improvement of the load carrying capacity of the threaded connection. Since the sleeve member can move in the adjustment direction, the bending load on the adjustment screw is reduced.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: May 15, 2001
    Assignee: Kennametal Hertel AG Werkzeuge + Hartstoffe
    Inventors: Gebhard Müller, Horst Jäger, Martin Voll
  • Patent number: 6227771
    Abstract: A metal-cutting mechanism includes an externally threaded screw and a set of non-rotatable insert holders spaced apart equidistantly along an axis of the screw. There are at least first, second, third, and fourth holders arranged axially in succession. The first holder is axially fixed. The second, third and fourth holders are axially movable relative to the first holder. The screw is rotatable relative to the second, third, and fourth holders and is connected thereto such that in response to each revolution of the screw, the second holder is moved in a first axial direction by a distance x, the third holder is moved in the first axial direction by a distance 2x, and the fourth holder is moved in the first axial direction by a distance 3x, whereby the equidistant spacing between the holders is changed by the distance x.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: May 8, 2001
    Assignee: Sandvik Aktiebolag
    Inventors: Tomas Lagerberg, Derek Presland
  • Patent number: 6105476
    Abstract: A toolholder apparatus includes a head, a cutting tool mounting fixture attached to the head for holding the cutting tool, and a floating roller assembly pivotally mounted relative to the head. These components are arranged and constructed so that during the cutting of a workpiece with the cutting tool the floating roller assembly can pivot about a pivotal axis relative to the head to allow the floating roller assembly to align with the workpiece. A mechanism is also provided for accomplishing the initial adjustment of alignment of the cutting tool with the rotating workpiece. This mechanism includes a cylindrical shaft extending from the head, and having an eccentric cam follower lug extending transversely from the shaft. A mounting block has a cylindrical bore disposed therethrough, and the shaft is received through the bore of the mounting block. A cam piece is slideably disposed within the mounting block to rotate the shaft as the cam piece slides relative to the mounting block.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: August 22, 2000
    Assignee: Peterson Tool Company
    Inventors: John L. Peterson, Mark G. Charleton, Lawrence A. Ballew, Fred E. Chaffin
  • Patent number: 5888030
    Abstract: The circular insert tool holder assembly for use with a circular tool post and for holding a resharpenable insert tool which has a top surface, a bottom surface, a front surface and a rear surface and having a cutting edge defined by the line formed by the intersection of the front surface and top surface of the insert tool, comprises a tool holder body, structure for rotatably mounting the tool holder body to the circular tool post, the tool holder body having a cavity therein, the cavity having an upper portion and a lower portion, the lower cavity portion being defined by an upper wall and a rear wall, and, a mechanism for retaining the insert tool within the upper cavity portion whereby the top surface of the insert tool is positioned along the upper wall of the cavity.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: March 30, 1999
    Inventor: Mark Edward Retondo
  • Patent number: 5447395
    Abstract: A chamfering tool made up of a holder and a double headed blade. The holder is substantially cylindrical, with a bullet nose at one end and a turned down shank at the other end. An angularly offset bore for holding the blade penetrates the bullet nose at an angle to the holder longitudinal axis, and also penetrates the holder cylindrical wall. When the blade is installed in the bore, one or both heads externally expose their respective operating cutting edges. The blade is substantially cylindrical, with cutting edges at each end being perpendicular to and intersecting the longitudinal axis of the blade. The novel arrangement enables the chamfering tool to work in tight quarters, to be readily removed and easily sharpened, and enables both right and left handed cutting by a simple adjustment.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: September 5, 1995
    Inventor: John S. Lynch
  • Patent number: 5439039
    Abstract: A log-slabbing chipper with multiple knife structures distributed about the periphery of a power-driven rotor head. Each knife structure includes a holder and a pair of assemblies mounting double-edge replaceable knives. Each knife is mounted between a clamp and a fixed counterknife. Each knife has a serrated back-bearing surface and each clamp has a correspondingly serrated clamping surface. Adjusting screws exert pressure on the clamps to slide the clamps and the knives with respect to the stationary counterknives to achieve desired precise edge positions.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: August 8, 1995
    Assignee: Pacific Saw and Knife Company
    Inventors: Joseph R. Bradstreet, Jr., Keith H. Hewitt, David S. Macey
  • Patent number: 5328307
    Abstract: A cutting tool of the specified type is to be miniaturized and configured in such a manner that it is suitable for working bores having a diameter of 6 mm and more and for high-speed work with revolving tools.The solution according to the invention provides that the adjustment screws for radially adjusting the cutting plate simultaneously form a clamping means for the form-locking clamping of the cutting plate to the supporting shoulder of the basic tool body.A preferred field of use are precision drills and grinding tools equipped with inserted cutting strips made of a highly wear resistant cutting material.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: July 12, 1994
    Assignee: MAPAL Fabrik fur Prazisionswerkzeuge Dr. Kress KG
    Inventors: Heiner Fees, Manfred Goetz
  • Patent number: 5271442
    Abstract: A log slabbing chipper with multiple knife structures distributed about the periphery of a power-driven rotor head. Each knife structure includes a holder, and a pair of knife mounting assemblies secured to the holder. Each knife mounting assembly mounts a double-edged replaceable knife.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: December 21, 1993
    Assignee: Commercial Knife, Inc.
    Inventors: Charles T. Carpenter, Robert M. Bayly
  • Patent number: 5217330
    Abstract: A machining tool for adjustably securing a replaceable cutting member thereto. A tool head is provided with a flat ledge portion at one end, a positioning screw assembly for adjusting the position of a cutting member on the flat ledge portion, and a securement screw assembly for securing the cutting member to the tool head.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: June 8, 1993
    Inventor: Jack W. Dennstedt
  • Patent number: 5031491
    Abstract: A tool device has a toolholder and a profile tool detachably secured to this, both of which comprise stops cooperating with one another for the precise positioning of the cutting profile of the profile tool relative to the toolholder which can be mounted on a machine tool, the stops being constructed in the form of mating surfaces. At least one adjusting element is provided between the toolholder and the profile tool to bring the profile tool to bear on the mating surfaces on the toolholder.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: July 16, 1991
    Assignee: Maag Gear-Wheel & Machine Company Limited
    Inventor: Heinz-Wilhelm Hofmann
  • Patent number: 4899793
    Abstract: A duplicating system, especially for use with a multipurpose woodworking machine capable of performing lathe turning operations. The system includes a support table, a carriage adapted to be slidably mounted on the machine, and a locking rack and pinion for raising and lowering the table relative to the carriage. A tool support is positioned on the table and includes a base having a low friction pad for engaging the table top, a follower for contacting a pattern, and a multi-edge cutting tool rotatably mounted on a tool rod for engaging a workpiece. An insert guide is mounted on the tool rod to hold the cutting tool in position. The base has a set screw which engages a circumferential groove in the shank of the tool rod so that the cutting tool can be quickly and accurately positioned relative to the follower.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: February 13, 1990
    Assignee: Shopsmith, Inc.
    Inventors: Steven A. Snyder, Jack Smith, David D. Flora, Robert L. Bartlett
  • Patent number: 4797039
    Abstract: Adjustable cutting tool bit support, usable as in a stump cutter body, including adjustable jack for variable registration depth of cutting bit, a differential screw engaging differential threads in the body and jack for adjusting the jack position, a wedge clamp for locking engagement of the body and tool bit in adjusted position and a differential screw engaging differential threads in the respective wedge clamp and jack for positively moving said wedge clamp into an effective clamping engagement.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: January 10, 1989
    Assignee: GTE Valenite Corporation
    Inventor: Ronald P. Bosek
  • Patent number: 4780029
    Abstract: A tool holder for a numerically controlled machine tool, in which a cutting edge provided on a base member is adjustable with respect to a reference surface on the base member by adjustment means. The adjustment means comprise a U-shaped slot in the base member. This slot serves to form a pair of lever portions in the material of the base member, which lever portions are connected to each other by an area of the base member serving as a pivot. An adjustment screw threadingly engaging the base member acts upon the free end of one of said lever portions such that upon an adjusting movement of the adjustment screw the first lever portion is deflected in a predetermined direction to thereby deflect the second lever portion of the opposite direction. The second lever portion transmits its movement to the cutting edge by means of a spacing member disposed in the slot (FIG. 1).
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: October 25, 1988
    Assignee: GTE Valeron Corporation
    Inventor: Hans W. Beck
  • Patent number: 4759244
    Abstract: An adjustable quick change tool holder having an elongated arbor for insertion into a machining apparatus. A tool support member is supported on the arbor. The tool support member releasably supports a cutting tool axially adjustable with respect to the longitudinal axis of the arbor. Guide means is provided for transversely adjusting the tool support member with respect to the arbor. A releasable securing mechanism is included for securing the tool support member at a desired transverse position. The cutting tool is thereby easily adjustable in two mutually perpendicular directions and can easily be replaced.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: July 26, 1988
    Inventor: Eddy Z. Engibarov
  • Patent number: 4163624
    Abstract: A toolholder for recessing operations having at least one recessing tool having a cutting body of hard metal, the recessing tool being arranged in a cylindrical receiving bore in the toolholder and being held by a retaining screw arranged in the toolholder perpendicularly to the receiving bore. A tool support is arranged in the receiving bore and has a semi-cylindrical shank. The flat surface on the semi-cylindrical shank has at least one groove extending parallel to its axis for receiving an exchangeable cutting body slidably mounted in the groove. A clamping jaw for each cutting body is provided in the other remaining half of the receiving bore and, under the action of the remaining screw, is supported at its front, outer end on the top of the cutting body and by its rear end on the supporting surface of the tool support. The clamping jaw has at its front end a shoulder supporting the cutting body in the direction of sliding and is provided with a setscrew extending parallel to the groove.
    Type: Grant
    Filed: January 23, 1978
    Date of Patent: August 7, 1979
    Assignee: Komet Stahlhalter- und Werkzeugfabrik Robert Breuning GmbH
    Inventor: Otto Eckle
  • Patent number: 4125342
    Abstract: The rotating cutter head of a reamer is formed with a recess, open in a radially outward direction and one circumferential direction relative to the axis of rotation, and a blade is retained in the recess between opposite, radially extending faces of the head and of a clamping shoe that may be adjusted inward of the recess. Two face portions of the blade are engaged by the respective faces of the head and shoe in area contact in planes which converge in a radially outward direction at a small acute angle to prevent movement of the blade from an initial, radially adjusted position under cutting stress.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: November 14, 1978
    Assignee: MAPAL Fabrik fur Prazisionswerkzeuge Dr. Kress KG
    Inventor: Dieter Kress