Chip Breaker Patents (Class 407/6)
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Patent number: 9649693Abstract: A cutting insert has a bottom supporting surface, a center cutting edge, two secondary cutting edges, realized on both sides of the center cutting edge and offset in relation to the center cutting edge, and two transition edges connecting the center cutting edge to the secondary cutting edge adjacent in each case. The two secondary cutting edges are realized in each case vertically offset and, where applicable, also offset in depth with respect to the center cutting edge and are laterally spaced from the center cutting edge. The transition edges, in each case in a non-edge-overlapping region, have at least over a portion an inclination n where 2°?n?20° in relation to a height direction which extends at right angles with respect to a main extension plane of the supporting surface.Type: GrantFiled: March 8, 2012Date of Patent: May 16, 2017Assignee: Ceratizit Austria Gesellschaft M.B.H.Inventors: Roland Friedl, Hannes Spielmann
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Patent number: 8323539Abstract: The invention concerns a process and an apparatus for chip-cutting plastic material optical lenses. The point of chip-cutting on the lens is cooled. The chip-cutting is effected by means of lathing. The point of chip-cutting is locally cooled down to a temperature at which the plastic material becomes brittle such that the chip breaks into bits.Type: GrantFiled: February 2, 2005Date of Patent: December 4, 2012Assignee: Carl Zeiss Vision GmbHInventor: Adalbert Hanssen
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Patent number: 8256999Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.Type: GrantFiled: November 8, 2011Date of Patent: September 4, 2012Assignee: Kennametal Inc.Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
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Patent number: 8256998Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.Type: GrantFiled: August 30, 2011Date of Patent: September 4, 2012Assignee: Kennametal Inc.Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
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Patent number: 8215878Abstract: An indirect cooling system for a rotating cutting tool uses a cryogenic coolant that is delivered to a cavity formed on the back surface of the cutting element, providing cooling near the cutting edge of the element. Because the total flow rate of the working fluid is low (less than 0.08 Liters/min/cutting edge), the fluid can be safely vented to atmosphere from the cavity, and as a result, no specialized coolant recovery or ventilation equipment is needed. The cavity may be formed with fins to enhance the heat transfer between the cutting element and the coolant, and coolant may additionally be sprayed directly onto the exterior surface of the element to cool the tool-chip interface. The indirect cooling system may be used for hard to machine metals and composites, as well as the machining of conventional materials without the use of traditional cutting fluids.Type: GrantFiled: April 22, 2009Date of Patent: July 10, 2012Assignee: Creare IncorporatedInventors: Jay Christopher Rozzi, John Kendall Sanders, Christian Henry Passow, Michael Phillip Day, Everett Edgar Archibald, Jr.
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Patent number: 8202025Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.Type: GrantFiled: October 7, 2010Date of Patent: June 19, 2012Assignee: Kennametal Inc.Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
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Patent number: 8142112Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.Type: GrantFiled: August 30, 2011Date of Patent: March 27, 2012Assignee: Kennametal Inc.Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
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Patent number: 8092123Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.Type: GrantFiled: October 7, 2010Date of Patent: January 10, 2012Assignee: Kennametal Inc.Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
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Patent number: 8057130Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.Type: GrantFiled: October 7, 2010Date of Patent: November 15, 2011Assignee: Kennametal Inc.Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
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Patent number: 8033763Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.Type: GrantFiled: October 7, 2010Date of Patent: October 11, 2011Assignee: Kennametal Inc.Inventors: Paul D. Prichard, Linn R. Andras, Ted R. Massa
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Patent number: 7883299Abstract: A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim.Type: GrantFiled: January 18, 2007Date of Patent: February 8, 2011Assignee: Kennametal Inc.Inventors: Paul D. Prichard, Linn R. Andras, Ted Richard Massa
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Patent number: 7546786Abstract: A toolholder for use in a metalworking operation, with a body extending along a longitudinal axis and a recess extending within the first end of the body. Adjacent an insert pocket adapted to receive a cutting insert in the recess is at least one wall with a portion having a surface with multiple interruptions to form a chip ejection segment. The chip ejection segment may be an integral part of the toolholder body or may be a discrete piece removably attached to the toolholder body. A method of imparting to a toolholder such a chip ejection segment is also disclosed.Type: GrantFiled: April 4, 2006Date of Patent: June 16, 2009Assignee: Kennametal Inc.Inventors: James M. Waggle, Dennis W. McNamara, Ronald L. Dudzinsky, Larry R. Meenan, Lewis Ray Morrison
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Publication number: 20090142149Abstract: A cutting insert for chip removing machining is provided, the cutting insert including an elongate center part, cutting edges being arranged at the opposite ends of the center part, the cutting insert being provided with engagement members along two longitudinal, opposite sides, the cutting edges forming, in an end view of the cutting insert, a mutual angle (?). A tool is also provided and includes such a cutting insert. The cutting insert includes rake faces associated with the respective cutting edge that are facing the opposite direction in the vertical direction (H) of the cutting insert, and the mutual angle (?) is in the interval of 10°<?<20°, and a distance (H1) is measured between the intersection of the cutting edge with a center line (C1-C1) of the cutting insert and the outermost portion of the lower engagement member and in that in an end view of the cutting insert, the ratio between the distance (H1) and the height (H) of the cutting insert is the following: 0.5H?H1?0.Type: ApplicationFiled: November 28, 2008Publication date: June 4, 2009Applicant: SECO TOOLS ABInventors: Matti Niemi, Kaj Virtanen
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Patent number: 7441484Abstract: A method for pre-scribing a workpiece to facilitate chip breaking when machining the workpiece on the same machine with the same tooling used for cutting, utilizing an invokable CNC cycle of the CNC machine completing the workpiece machining.Type: GrantFiled: June 29, 2007Date of Patent: October 28, 2008Assignee: Caterpillar Inc.Inventors: Eric R. Larsen, Marion B. Grant, Jr., Michael P. Vogler
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Patent number: 6581339Abstract: An erectable platform includes at least one bay, the bay having; at least one deck assembly, the deck assembly having a plurality of threaded couplers. The platform further includes support structure having at least two spaced apart main beams and at least two intermediate beams, each of said main beams underlying each of the at least one deck assemblies in a supporting disposition, each of said main beams presenting a first elongate, upward directed threaded receiver, the threaded receiver having two spaced apart rails defining a slot between the two rails, and each of said intermediate beams extending between two of the at least two main beams and being operably removably coupled thereto, and a plurality of depending columns operably removably coupled to the support structure in a supporting disposition.Type: GrantFiled: April 12, 2001Date of Patent: June 24, 2003Assignee: Wenger CorporationInventor: Martin E. Thiede
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Method for forming a superabrasive polycrystalline cutting tool with an integral chipbreaker feature
Patent number: 6447560Abstract: A method or process for making polycrystalline diamond or polycrystalline CBN cutting tools (Superabrasives), which have integral chip-breaking features is disclosed. This method involves pressing a die or other like rigid component against either the outer can cover or the diamond or CBN region directly. This invention provides economical manufacture of diamond chip-breaker tools, while avoiding unnecessary EDM EDG, grinding, or laser processes. This process forms the chip-breaker on the upper surface of the diamond region, during or prior to sintering. This invention permits a wide variety of chip-breaker or other diamond surface features, while minimizing cost and processing steps. Disclosed embodiments include: pressing through the can assembly; pressing within the assembly by introducing a rigid component in the can; and pressing two cans together with an intervening rigid component imposing the desired diamond surface features.Type: GrantFiled: February 19, 1999Date of Patent: September 10, 2002Assignee: US Synthetic CorporationInventors: Kenneth M. Jensen, David Miess, Bill J. Pope -
Patent number: 6394709Abstract: A cutting insert is clamped in a pocket of a holder by a top clamp assembly which includes a clamp arm screwed to the holder, and a clamp plate interposed between the insert and a front part of the clamp arm. The clamp plate is formed of a harder and more wear-resistant material than the clamp arm and transmits clamping forces from the clamp arm to the cutting insert. The hard clamp plate shields the clamp arm from being impacted by chips generated during a machining operation, thereby minimizing wearing of the clamp arm.Type: GrantFiled: April 26, 2000Date of Patent: May 28, 2002Assignee: Sandvik ABInventors: Sture Sj{umlaut over (oo)}, Per Hansson
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METHOD FOR FORMING A SUPERABRASIVE POLYCRYSTALLINE CUTTING TOOL WITH AN INTEGRAL CHIPBREAKER FEATURE
Publication number: 20010037609Abstract: A method or process for making polycrystalline diamond or polycrystalline CBN cutting tools (Superabrasives), which have integral chip-breaking features is disclosed. This method involves pressing a die or other like rigid component against either the outer can cover or the diamond or CBN region directly. This invention provides economical manufacture of diamond chip-breaker tools, while avoiding unnecessary EDM EDG, grinding, or laser processes. This process forms the chip-breaker on the upper surface of the diamond region, during or prior to sintering. This invention permits a wide variety of chip-breaker or other diamond surface features, while minimizing cost and processing steps. Disclosed embodiments include: pressing through the can assembly; pressing within the assembly by introducing a rigid component in the can; and pressing two cans together with an intervening rigid component imposing the desired diamond surface features.Type: ApplicationFiled: February 19, 1999Publication date: November 8, 2001Inventors: KENNETH M. JENSEN, DAVID MIESS, BILL J. POPE -
Patent number: 6312199Abstract: A metal cutting tool includes a tool body which carries a cutting insert and has nozzles for directing cooling fluid against the insert. The tool body defines a longitudinal axis and is insertable into a holder in an axial direction, whereby a surface of the tool body abuts a surface of the holder. Those surfaces include respective holes that are aligned with one another in a radial direction for transferring cooling fluid from a channel of the holder to a channel of the tool body. A seal surrounds one of the holes and is compressed when the tool body is inserted into the holder.Type: GrantFiled: May 30, 2000Date of Patent: November 6, 2001Assignee: Sandvik AktiebolagInventors: Johan Sjödén, Eva Karin Margaretha Sjödén, Anna Maria Birgitta Sjödén-Nygrén, Astrid Ingrid Margaretha Sjödén
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Patent number: 6045300Abstract: A tool holder for holding cutting inserts for machine tool work includes an integral cooling passage therethrough. Various coolant nozzles are interchangeably installable in the holder, to provide different amounts of coolant fluid flow depending upon the specific work being accomplished. The portion of the cooling passage in the tool holder adjacent to the installed nozzle, as well as the nozzles, are devoid of bends or changes in direction of the coolant flow path for greater efficiency and to ensure that the coolant flow is directed precisely at the cutting tip of the insert regardless of the radial orientation of the nozzle. The nozzles each incorporate a non-circular, preferably triangular, coolant outlet tip, which cross sectional shape blends smoothly with the circular cross sectional shape of the nozzle inlet and passage through the tool holder.Type: GrantFiled: June 5, 1997Date of Patent: April 4, 2000Inventor: Gregory S. Antoun
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Patent number: 5947648Abstract: A toolholder assembly includes a holder blade having an upper clamping jaw and a lower base jaw defining therebetween an insert receiving slot for releasably retaining a cutting insert therein. The upper clamping jaw has an upper surface disposed apart from the insert receiving slot and formed with a recess towards its front end. A wear resistant shield insert is releasably retained within the recess and has an upper surface substantially flush with the front end's upper surface.Type: GrantFiled: July 21, 1997Date of Patent: September 7, 1999Assignee: Iscar Ltd.Inventors: Yacob Friedman, Jerrold Robin
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Patent number: 5704734Abstract: A metal cutting tool assembly (1) having an automatically adjustable chipbreaker (23) is provided that comprises a cutting insert (11) for cutting a relatively rotating workpiece, a holder (3) for holding the insert (11), an insert driver (5) for applying a cutting force between the insert (11) and the workpiece, a chipbreaker (23) having a surface (27) that is effective in breaking chips (55, 56) of different thicknesses when positioned at different distances from the cutting edge (19) of the insert (11), and a mounting mechanism (30) for movably mounting the chipbreaker (23) onto the holder (3). The mounting mechanism (30) includes a spring (50) for automatically adjusting the distance between the chipbreaking surface (27) of the chipbreaker (23) and the cutting edge (19) of the insert (11) in response to the forces applied to the chipbreaker (23) by the metal chips (55, 56) that result from the cutting operation.Type: GrantFiled: June 24, 1996Date of Patent: January 6, 1998Assignee: Kennametal Inc.Inventors: John P. Ashley, Kenneth L. Niebauer
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Patent number: 5592863Abstract: A method for producing discontinuous chips during the machining of a work piece by a cutting tool is provided. The method includes the steps of engaging the cutting tool into the workpiece to produce a continuous chip and directing a stream of cryogen toward the continuous chip, so as to rapidly cool the continuous chip and fracture the continuous chip into the discontinuous chips.Type: GrantFiled: September 25, 1995Date of Patent: January 14, 1997Assignee: Xerox CorporationInventors: Timothy R. Jaskowiak, Daniel R. Gilmore, III, Thomas L. DiGravio
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Patent number: 5348065Abstract: A cutting blade for working logs to timber form while simultaneously removing wood chips which includes a pair of adjacent recesses formed in the periphery of the blade. A knife is bolted in the cutting blade in a first recess and a wear insert is separately bolted to the cutting blade in the adjacent recess. The bolts are countersunk so as not to extend outwardly from the knife or wear insert.Type: GrantFiled: September 22, 1992Date of Patent: September 20, 1994Assignee: Iggesund Tools ABInventor: Scott W. Meyer
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Patent number: 5340242Abstract: A toolholder includes a support having an insert seat for receiving a cutting insert. The cutting insert is brought into engagement with a workpiece to remove a chip of metal from the workpiece. The toolholder includes fluid chip-breaking means for directing a stream of high velocity fluid at the chip being removed from the workpiece to break the chip into small segments. The direction of the fluid stream can be adjusted so that a single tool can be used perform a variety of cuts while optimizing the effectiveness of the fluid chip-breaking stream for each cut.Type: GrantFiled: September 25, 1992Date of Patent: August 23, 1994Assignee: Kennametal Inc.Inventors: William D. Armbrust, Randall E. Deemer
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Patent number: 5271301Abstract: A vibrating cutting tool capable of making uniform micro-vibrations at the cutter edge generated during machining. The vibrations at the cutter edge are transmitted to balls biassed by springs, compressing the springs. The vibrations are transmitted from the balls through the output shaft back to the cutter edge. While the cutting force is small, the amplitude of vibration of balls is relatively large. When it increases, the holder acts on the balls more than the spring does so that vibration is suppressed. As a result, the amplitude of vibration becomes uniform.Type: GrantFiled: September 17, 1992Date of Patent: December 21, 1993Assignee: Nippon Pneumatic Manufacturing Co., Ltd.Inventors: Masaaki Hiraoka, Yasuo Umemura, Osamu Date, Tsutomu Aoki, Fukuo Wakano, Hitomi Nakai
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Patent number: 5205678Abstract: A gear cutting tool has a series of separate cutter inserts removeably clamped to the front ledge of a holder block. Each cutter insert has a forward cutting edge that extends beyond the ledge and a rear positioning portion that includes a central projection extending rearwardly from side faces. The central projection mates with a respective one of a series of parallel tracks formed in the holder block and the rear faces mate with upright front walls at the rear of the ledge on either side of the track. The arrangement precisely locates the cutter insert in the holder block. The holder block may be formed of a single piece or may be built up of identical interlocking block elements.Type: GrantFiled: August 27, 1992Date of Patent: April 27, 1993Assignee: Bucyrus-Erie CompanyInventors: Heinz G. Britsch, Harvey H. Cords, Larry S. Gallett, John G. Lawton
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Patent number: 4955264Abstract: The present invention is a tool assembly comprising a tool block and a tool holder capable of delivering chip-breaking fluid to the tool holder without a fixed attachment to the tool holder. The tool block is formed with a tool shank cavity having a tool support surface. The tool holder includes a shank insertable into the tool shank cavity of the tool block. A fluid delivery passage is formed in the tool block which terminate in an outlet opening. A primary fluid passage is formed in the tool holder and terminates in a discharge orifice positioned to direct a fluid jet at the chip being removed from the workpiece. A fluid path provides a path for the flow of chip-breaking fluid from the outlet of the delivery passage to the inlet of the primary fluid passage throughout the entire range of relative movement between the tool block and holder.Type: GrantFiled: May 30, 1989Date of Patent: September 11, 1990Assignee: Kennametal Inc.Inventor: William D. Armbrust
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Patent number: 4252038Abstract: A cutting tool holding system is disclosed. The system employs an improved chip breaker element having a lip mechanically gripping a radially extending and exposed edge of the cutting tool insert; the breaker element is held against relative sliding movement by a pin connection to a clamp which laterally urges the element and tool against the shank. Thus, the cutting insert is locked in place within the tool shank pocket avoiding premature failure from undue stress during prolonged tool cutting. The breaker element also has a chip breaker surface comprised of an arcuate segment spaced uniformly from the insert cutting point and a straight segment extending from the arcuate segment along the exposed edge of the insert.Type: GrantFiled: September 17, 1979Date of Patent: February 24, 1981Assignee: Ford Motor CompanyInventors: Krishnamoorthy Subramanian, Orrin A. Newton
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Patent number: 4223580Abstract: The herein-proposed cutting tool comprises a spindle carrying the cutting element shaped as a solid of revolution, and a chip-breaker knife which, according to the invention is made likewise as a solid of revolution and set on the spindle rotatably round its geometrical axis so as to provide a clearance in between the knife blade and the surface of the workpiece being machined.Type: GrantFiled: September 19, 1978Date of Patent: September 23, 1980Inventors: Valery A. Sidorenko, Evgeny I. Morgunsky, Vladimir A. Plotnikov, Nikolai V. Vishnev, Petr I. Yascheritsyn
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Patent number: 4189264Abstract: A polygonal insert of hard cutting material used in single and multiple toolholding means to receive the same, the insert comprising a wafer having conjunctive side walls lying in planes intersecting each other and parallel to the axis of the insert, one or more faces of the insert normal to the sides being depressed to form a peripheral ridge around the insert composed of a cutting land, either negative or positive, and downwardly extending walls to provide a polygonal recess on the face of the insert. A chip breaker insert with the same configuration as the basic insert with smaller lateral dimensions is provided to position selectively within the peripheral walls of the ridge to be clamped in place as a chip breaker. Also, a support anvil is utilized below the insert supporting the face within the ridge walls on the base of the recess in the cutting holder.Type: GrantFiled: September 15, 1978Date of Patent: February 19, 1980Assignee: Fansteel Inc.Inventor: Rolf H. Kraemer
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Patent number: 4123194Abstract: A chip breaker includes an abutment surface having geometry generally corresponding in profile to the geometry on the cutting edge of the associated thread chaser to permit such abutment surface to be uniformly spaced from respective roots and crests of the thread chaser and in close proximity thereto when the chaser and breaker are clampingly juxtaposed. The juxtaposed or trailing surface of the chip breaker has angularly biased, parallel grooves therein to deliver coolant past the chaser body and then into the cutting area along the respective flanks of the chip breaker and chaser geometry.Type: GrantFiled: June 27, 1977Date of Patent: October 31, 1978Assignee: PMC Industries, Inc.Inventor: Lawrence E. Cave