Integral With Holder Patents (Class 407/110)
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Publication number: 20100272524Abstract: A metal cutting tool having an insert holder and a cutting insert releasably secured therein. The insert holder has upper and lower blocks and upper and lower jaws, each jaw projects from the front end of each respective block. The cutting tool has a cutting portion support projecting transversely from the front end of the lower clamp at an angle ?. The cutting insert has a shaft and a first cutting portion projecting transversely from the shaft at the angle ?. The cutting insert has non-planar abutment surfaces formed to mate with corresponding, non-planar support surfaces located on the lower and upper jaws and on the cutting portion support.Type: ApplicationFiled: April 21, 2010Publication date: October 28, 2010Applicant: Iscar, Ltd.Inventor: Uzi Gati
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Publication number: 20100272523Abstract: In a head member (30) for a cutting tool with detachable insert (70) including a head member body (31) formed with an insert attachment seat (36) to which a cutting insert (50) having cutting blades (52) is detachably attached, and constituting the cutting tool with detachable insert (70) by being mounted to a tip portion of a holder (10), a side surface (31A) of the head member body (31) is formed with a recess (44) which has a continuous inner wall surface therearound and a bottom surface connected to the inner wall surface over its whole periphery and which is recessed from the side surface (31A) without passing though the head member body (31). According to this head member (30), generation of chatter vibration can be suppressed even if the amount of protrusion is increased, and the cutting heat of a cutting insert can be efficiently radiated.Type: ApplicationFiled: October 28, 2008Publication date: October 28, 2010Inventors: Hidehiko Nagaya, Norio Aso, Yasuharu Imai
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Publication number: 20100266352Abstract: In a head member (30) for this cutting tool with detachable insert (70), a slit (38) is provided so as to further extend towards a rear end side from a rear end for an insert attachment seat formed by a pressing surface of an upper jaw portion of a head member body (31) and a pedestal surface of a lower jaw portion (33). Also, a clamp screw engaged with the upper jaw portion is screwed while inclining in a direction separated as it moves towards the lower jaw portion (33), with respect to an imaginary plane (P) which extends along an extension direction of the slit (38) and in a direction in which the pressing surface and the pedestal surface face each other, whereby the upper jaw portion is enabled to elastically deform by using as a fulcrum a connecting portion 39 between a rear wall surface (38B) of the slit (38), and a rear end surface (31F) of the head member body (31).Type: ApplicationFiled: October 28, 2008Publication date: October 21, 2010Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Hidehiko Nagaya, Norio Aso, Yasuharu Imai
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Publication number: 20100232890Abstract: A cutting tool includes a novel cutting insert retaining and adjusting mechanism. The cutting insert retaining and adjusting mechanism is associated with a recess in the cutting tool and includes a nest slidably mounted in the recess. The nest includes a cutting insert pocket. The cutting insert retaining and adjusting mechanism includes a first wedge adapted to selectively exert pressure on the nest to retain the nest in a desired position in the recess, and a second wedge adapted to selectively exert pressure on a cutting insert positioned in the cutting insert pocket to retain the cutting insert in a desired position. The mechanism further includes an adjustment screw including a first threaded portion and a second threaded portion. The first threaded portion is threadedly disposed in a threaded bore in the cutting tool body, and the second threaded portion is threadedly disposed in a threaded bore in the nest.Type: ApplicationFiled: March 10, 2009Publication date: September 16, 2010Applicant: Greenleaf Technology CorporationInventor: Donald R. Hughes
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Patent number: 7780380Abstract: An insert-indexable tool includes a holder and a head member having an insert mount seat by which an insert is to be held. The head member includes a first mount face and a second mount face that intersect each other from a view facing toward the cutting face in a state in which the insert is held by the insert mount seat. The holder includes a first receiving face abutting the first mount face and a second receiving face abutting the second mount face. The first receiving face and the second receiving face are respectively provided with a first fixing threaded hole and a second fixing threaded hole into which fixing screws are inserted into the first mount face and the second mount face. The first fixing threaded hole and the second fixing threaded hole are located so that the fixing screws do not intersect each other.Type: GrantFiled: February 28, 2007Date of Patent: August 24, 2010Assignee: Mitsubishi Materials CorporationInventors: Hidehiko Nagaya, Norio Aso, Shoichiro Watanabe, Yasuharu Imai, Kouichi Kageyama
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Publication number: 20090279962Abstract: An improved design of a cutting insert system includes a plurality of indexable peripheral milling cutting inserts adapted to be mounted on a peripheral milling tool holder. Each of the cutting inserts includes an insert width that is the same for each cutting insert. Each of the cutting inserts also includes a corner nose having a corner nose radius dimension that is different for each cutting insert, and an axial alignment clearance face that defines an equivalent face location and an equivalent clearance angle for each of the plurality of cutting inserts when the insert is detachably mounted on the tool holder.Type: ApplicationFiled: May 7, 2008Publication date: November 12, 2009Applicant: TDY Industries, Inc.Inventors: Jean-Luc Dufour, X. Daniel Fang, David J. Wills, Thomas B. Hartman
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Patent number: 7568864Abstract: A tool for chip removing machining, including a replaceable cutting insert and a basic body. The basic body includes a rear fixing part, a front supporting part having an insert seat, and a tightening part situated over the support part, and spaced-apart from the front supporting part by a first gap and from the rear fixing part by a second gap. The tightening part is connected to the basic body via a joint. The joint is formed of at least one elastically resilient material portion and has an axis around which the tightening part is pivoted in order to press the cutting insert against the insert seat by a front finger. The rear fixing part includes an internal channel for feed of a fluid in the forward direction through the basic body. The internal channel extends into a second channel inside the tightening part via a channel section that is entirely or partly housed in a bridge which, like the joint, is formed of the material in the basic body, and which bridges one of the first and second gaps.Type: GrantFiled: November 9, 2007Date of Patent: August 4, 2009Assignee: Sandvik Intellectual Property ABInventor: Sture Sjöö
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Patent number: 7524147Abstract: A cutting tool comprises an insert holder and a cutting insert. The insert holder has a clamping portion comprising a base jaw a clamping jaw and an insert pocket therebetween. The clamping jaw comprises two independently resilient elongated sub-clamping jaws separated by an elongated recess. The cutting insert is resiliently clamped in the insert pocket between the two elongated sub-clamping jaws and the base jaw.Type: GrantFiled: January 25, 2005Date of Patent: April 28, 2009Assignee: Iscar, Ltd.Inventor: Gil Hecht
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Publication number: 20080286057Abstract: A clamping mechanism for a cutting insert that clamps the cutting insert in an insert mounting seat having a pair of contacting surfaces facing each other. Contacting surfaces of the insert mounting seat are provided with a pair of inclined planes inclined so as to be formed in a convex V-shape in the cross-section along the contacting direction, and the contact surfaces of the cutting insert are formed in a concave V-shape which has a pair of convex surfaces with roundness to be concave toward the inclined planes, and the pair of inclined planes and the pair of convex surfaces come in contact with each other at a pair of contacting positions, which have an interval therebetween in the width direction orthogonal to the contacting direction.Type: ApplicationFiled: April 15, 2008Publication date: November 20, 2008Applicant: Mitsubishi Materials CorporationInventors: Hidehiko Nagaya, Norio Aso, Yasuharu Imai
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Publication number: 20080273929Abstract: A machine tool designed to be fitted with a cutter which is retained by a central screw includes a plate which is removable in relation to the body of the tool. The plate possesses a cut-out for the positioning of a machining cutter with a central hole, this cut-out having two lateral faces and a third face which bears elastically against the machining cutter.Type: ApplicationFiled: June 29, 2005Publication date: November 6, 2008Applicant: SECO TOOLS ABInventor: Alain Pigeat
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Publication number: 20080247832Abstract: A tool structure contains a first part having an oval end section with regard to an axis of symmetry in a direction of a maximum height and an axis of symmetry in the direction of a maximum width, and a second part having a recess accommodating the end section via mutual contact surfaces. The tool structure has a clamping element for the mutual clamping of the parts and mutual contact surfaces that are restricted to in each case four spaced-apart surface sections. These surface sections are disposed symmetrically with respect to a circumference of the end section such that a center point of a straight connecting line of the starting and end points of the respective surface section is at a normal distance b1 from the axis of symmetry and at a normal distance h1 from the axis of symmetry, h1 being greater than b1.Type: ApplicationFiled: October 5, 2007Publication date: October 9, 2008Applicant: CERATIZIT AUSTRIA GESELLSCAFT MBHInventors: Johann Maier, Siegfried F. Kerle, Eduard Reich, Einar Schurda
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Publication number: 20080206007Abstract: The present invention is directed to an insert, a slotting cutter assembly and a method for machining a plurality of slots in a metallic alloy part. The insert may comprise a cutting edge, at least one primary radius, at least two secondary radii and a clearance angle. The cutting edge may form a narrow outer end at a tip of the insert and a larger width region at a distance inward from the narrow outer end. The clearance angle may extend rearward from the cutting edge. The slotting cutter assembly may comprise a plurality of inserts and a cutter body. The cutter body may comprise a plurality of retaining slots and a plurality of support portions. The retaining slot may be configured to receive the insert. The support portion may provide support for the insert.Type: ApplicationFiled: February 22, 2008Publication date: August 28, 2008Inventor: Donald R. Hughes
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Patent number: 7407347Abstract: A tool for chip removing machining includes a holder and at least one cutting insert received in the holder. The holder is provided with at least one insert pocket, in which the cutting insert is intended to be received, and an opening connected to the insert pocket. The insert pocket has a first holding member provided along the periphery of the insert pocket, and the cutting insert has an anchor section and an edge portion connected to the anchor section. A second holding member is provided along the circumference of the anchor section. The first and the second holding members are intended to cooperate when the cutting insert is mounted in the insert pocket. The periphery of the insert pocket, at least partly, is defined by one or more circular arcs with a common center of rotation.Type: GrantFiled: April 27, 2005Date of Patent: August 5, 2008Assignee: Seco Tools ABInventors: Kaj Virtanen, Gabor Kugler, Jens Bald
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Patent number: 7396196Abstract: A cutting machining tool, especially of a boring bar type, has a holding device (10), one end of which is provided with a fixing shaft while its other end is provided with a seat (12) for a removable cutting member (16). The cutting member encompasses a support part (18) which engages at least partly into the seat (12) in the fixed state and a machining part (20). The support part (18) can be fixed in a clamping manner in the seat (12) by a fastening part (22). The seat (12) is provided with a rest area (28). The cutting member can be securely fixed in the seat across a larger fixing range by a support part due to the fact that the seat (12) includes a delivery area (30) in addition to the rest area (28). The two areas (28, 30) are movable towards or away from each other so as to fasten or remove the cutting member (16) by the fastening part (22). Secure fixing and support is achieved by three planar areas that are located on the outer circumference of the support part.Type: GrantFiled: June 16, 2003Date of Patent: July 8, 2008Assignee: Hartmetall-Werkzeug Fabrik Paul Horn GmbH.Inventor: Matthias Oettle
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Patent number: 7384218Abstract: A clamping mechanism for a cutting insert that clamps the cutting insert in an insert mounting seat having a pair of contacting surfaces facing each other. Contacting surfaces of the insert mounting seat are provided with a pair of inclined planes inclined so as to be formed in a convex V-shape in the cross-section along the contacting direction, and the contact surfaces of the cutting insert are formed in a concave V-shape which has a pair of convex surfaces with roundness to be concave toward the inclined planes, and the pair of inclined planes and the pair of convex surfaces come in contact with each other at a pair of contacting positions, which have an interval therebetween in the width direction orthogonal to the contacting direction.Type: GrantFiled: December 15, 2005Date of Patent: June 10, 2008Assignee: Mitsubishi Materials CorporationInventors: Hidehiko Nagaya, Norio Aso, Yasuharu Imai
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Publication number: 20080131215Abstract: A tool for chip removing machining, including a replaceable cutting insert and a basic body. The basic body includes a rear fixing part, a front supporting part having an insert seat, and a tightening part situated over the support part, and spaced-apart from the front supporting part by a first gap and from the rear fixing part by a second gap. The tightening part is connected to the basic body via a joint. The joint is formed of at least one elastically resilient material portion and has an axis around which the tightening part is pivoted in order to press the cutting insert against the insert seat by a front finger. The rear fixing part includes an internal channel for feed of a fluid in the forward direction through the basic body. The internal channel extends into a second channel inside the tightening part via a channel section that is entirely or partly housed in a bridge which, like the joint, is formed of the material in the basic body, and which bridges one of the first and second gaps.Type: ApplicationFiled: November 9, 2007Publication date: June 5, 2008Inventor: Sture Sjoo
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Publication number: 20080124180Abstract: In an embodiment, the invention provides a tool for chip removing machining, including a replaceable cutting insert and a basic body. The basic body includes a rear fixing part, a front supporting part having an insert seat, and a tightening part spaced apart from the front supporting part by a first gap and from the rear fixing part by a second gap. The tightening part is connected to the basic body via a joint around which the tightening part is pivoted to press the cutting insert against the insert seat by a front finger. The rear fixing part includes a first channel having an inlet and an outlet for feed of a fluid toward the cutting insert. The tightening part includes an internal, second channel that extends between an inlet and an outlet.Type: ApplicationFiled: November 9, 2007Publication date: May 29, 2008Inventor: Anders Breisch
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Publication number: 20080080937Abstract: A cutting insert is retained in a cutting tool through a combination of resilient clamping and abutment by a threaded fastener. The threaded fastener, which abuts but does not penetrate cutting insert, pre-loads the cutting insert against cutting forces, by biasing the cutting insert against a jaw of the cutting tool.Type: ApplicationFiled: August 22, 2007Publication date: April 3, 2008Applicant: Iscar Ltd.Inventor: Gil Hecht
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Patent number: 7331736Abstract: A cutting tool assembly (14) including a tool holder (20) having a removeable clamp (20a). A cutting insert support blade member (16) is removably held in the tool holder by the clamp (20a). The cutting insert support blade (16) includes at least one, preferably two, insert receiving pockets (30). The pockets (30) are defined by a body portion (16b) and a clamp portion (16a) joined together by an integrally formed resilient or deformable portion (16c) which permits slight resilient movement between the clamping and body portions to facilitate the installation of a cutting insert (18) in a pocket. When the insert support blade (16) is mounted in the tool holder (20), the clamp inserts clamping forces to the clamping portion (16a) of the insert support blade which serves to secure the insert support blade to the tool holder and exert clamping forces on an insert (18) held in the pocket.Type: GrantFiled: October 14, 2004Date of Patent: February 19, 2008Assignee: Kennametal Inc.Inventor: Roger Nicholas
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Patent number: 7329072Abstract: There is disclosed a clamping mechanism for a cutting insert that clamps the cutting insert by inserting the cutting insert into an insert mounting seat. The insert mounting seat is formed in a tip of a holder having a pair of contacting surfaces facing each other, and the cutting insert has a pair of contact surfaces to come in contact with the pair of contacting surfaces, respectively. The tip of the holder is provided with a pair of jaws that is formed with the pair of contacting surfaces, respectively, and that can be elastically deformed relatively in a direction that the contacting surfaces contact the contact surfaces, and a clamping means that elastically deforms the pair of jaws to bring relatively the pair of contacting surfaces close to each other and to separate them relatively from each other.Type: GrantFiled: December 15, 2005Date of Patent: February 12, 2008Assignee: Mitsubishi Materials CorporationInventors: Hidehiko Nagaya, Norio Aso, Hiroaki Hayashizaki, Yasuharu Imai
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Publication number: 20080003068Abstract: An insert-indexable tool includes: a holder; a head member having an insert mount seat clamping an insert having a cutting edge, and mounted on a distal portion of the holder, wherein the head member includes a first jaw having a clamping face and a second jaw having a base face, the clamping face and the base face opposing each other to constitute the insert mount seat, a clamping screw having a shaft portion and a pressing portion is disposed in the distal portion of the holder so the clamping screw is inclined with respect to the extending direction of the insert mount seat and extends gradually toward an inside of the holder while extending from the first jaw toward the second jaw, the holder is provided with a threaded hole engageable with the shaft portion of the clamping screw, the first jaw is provided with a spot facing accommodating the pressing portion of the clamping screw, and a center axis of the spot facing and an axis of threaded hole obliquely intersect each other.Type: ApplicationFiled: March 28, 2007Publication date: January 3, 2008Applicant: Mitsubishi Materials CorporationInventors: Hidehiko Nagaya, Norio Aso, Yasuharu Imai
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Publication number: 20070286692Abstract: The present invention relates to cutting tools and, more particularly, to cutting tools using clampable cutting inserts. The cutting tool includes a toolholder including at least one insert-receiving pocket, the insert-receiving pocket including at least one side abutment surface. The cutting tool further includes a cutting insert comprising an insert body having at least one insert supporting surface and a clamping hole including a clamping surface defining at least part of a non-circular, substantially elliptical cone. The cutting tool further includes a clamp having a clamp surface adapted to contact the clamping surface at two contact points such that the at least one side abutment surface and the at least one insert supporting surface are secured in a contacting relationship.Type: ApplicationFiled: May 8, 2007Publication date: December 13, 2007Applicant: Pramet Tools, s.r.o.Inventor: Jaromir Rysavy
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Patent number: 7217068Abstract: Tool holder for cutting bodies (5) may be mounted on a base holder (15) by a fixing device (41), and a cooperating stop extending in a plane in the direction of the tool holder. A positive positional fixing against any movement along the three axes of the spatial coordinate system may be obtained. The planar stop is divided into planar sections (19, 21) by a machined recess (23). The recess (23) forms a seat for housing a projecting matching body (25) on the base holder (15). The walls of the recess (23) form planar support surfaces (31, 33) for the matching body (25), which each define differing planes perpendicular to the stop, to resist displacement and torsional forces resulting from the cutting force into the matching body (25) of the base holder (15).Type: GrantFiled: August 21, 2002Date of Patent: May 15, 2007Assignee: Hartmetall-Werkzeugfabrik Paul Horn GmbHInventor: Matthias Oettle
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Patent number: 7131794Abstract: A rotatable cutting tool has a cutting tool body having at least one recess for receiving a replaceable insert. The recess has a wall defined by a deformable clamp extending radially from the tool body, the clamp having a leaf isolated from the tool body except at the base of the leaf by an isolating channel in the tool body. The tool further has an adjustable leaf-bending element for elastically deforming the leaf to retain a replaceable insert in the recess.Type: GrantFiled: April 14, 2004Date of Patent: November 7, 2006Assignee: Valenite Inc.Inventors: James J. Robinson, Kenneth A. Grech, Larry A. Brow
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Patent number: 6974283Abstract: A cutting device includes a holder (10) provided with a jaw-like opening (24) on a clamping head (20) that serves to accommodate a metal-cutting tool (22). The jaw-like opening (24) is located on a longitudinal side (16) of the clamping head (20). A face (28) of the clamping head extends transverse to the longitudinal side (16), and faces a workpiece (30) that rotates during metal-cutting machining. The face (28) is provided, at least in the area in which it leads into the opening (24), with a camber (32) whose curvature corresponds to the curvature of a workpiece (30) having the largest diameter intended to be used with the cutting device.Type: GrantFiled: June 18, 2002Date of Patent: December 13, 2005Assignee: Hartmetall-Werkzeugfabrik Paul Horn GmbHInventor: Matthias Oettle
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Patent number: 6971823Abstract: A. cutting tool for metal cutting operations employing detachable cutting insert secured to cartridges. The cartridges have a clamping portion that is resiliently transformable between a normally non-expanded state and a biased expanded state by means of a clamping screw received in a through bore in the cartridge. The clamping portion is slidably insertable into the cartridge pocket when in the normally non-expanded state, and is securely retained in the cartridge pocket when in the biased expanded state.Type: GrantFiled: February 13, 2004Date of Patent: December 6, 2005Assignee: Iscar Ltd.Inventors: Amir Satran, Talal Qeys
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Patent number: 6926472Abstract: A cutting tool includes a basic body having a insert seat and a rotatable cutting insert mounted on a connecting surface of the seat. The insert includes a chip cutting top side, a bottom side and an outer peripheral side, whereby there is a cutting edge in the area between the top side and the peripheral side. Formed on the connecting surface of the seat is at least one first ring formation, and formed in the bottom surface of the insert is at least one second ring formation having an equal diameter as the first ring formation. At least one of the first and second ring formations comprises a groove. The first and second ring formations are in direct or indirect engagement with each other in order to form a guide between the cutting insert and the basic body that permits rotation of the cutting insert about its own center axis and simultaneously keeps the insert in an exactly defined radial position.Type: GrantFiled: March 21, 2003Date of Patent: August 9, 2005Assignee: Sandvik AktiebolagInventor: Peder Arvidsson
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Patent number: 6814526Abstract: A holder is designed to receive a cutting insert intended for parting and grooving operations. The insert is clampable in a seat formed between a blade tongue and a clamping finger which respectively extend from lower and upper front parts of the holder. A gap separates those front parts in order to enable those parts to be forced towards each other by means of a clamping mechanism mounted in the holder. The clamping mechanism comprises a drawbar, a first end portion of which is movable within a bore formed in one of the front parts, and a second end portion of which is fixed in the other front part. The first end portion of the drawbar includes a head having a frusto-conical abutment surface. A tightening screw is threadedly mounted in the same front part as the head and is arranged to contact the abutment surface to displace the drawbar in a direction forcing the clamping finger and the tongue together to clamp the cutting insert in place.Type: GrantFiled: April 19, 2002Date of Patent: November 9, 2004Assignee: Sandvik AktiebolagInventors: Akio Shiraiwa, Per Hansson
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Patent number: 6702529Abstract: A parting tool includes a thin holder forming a groove open at one end, and a double-ended cutting insert mounted in the groove. The insert includes front and rear cutting edges and a rear end surface abutting against a rear support surface of the groove. The rear support surface is configured to enable differently shaped double-ended inserts to be mounted therein without the occurrence of contact between the rear cutting edge and a surface of the holder.Type: GrantFiled: October 15, 2001Date of Patent: March 9, 2004Assignee: Sandvik AktiebolagInventors: Pär Tägtström, Per Hansson, Claes Andersson, Börje Ahnlen
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Patent number: 6695549Abstract: A cutting tool assembly having a cutting insert with a generally cylindrical portion and an axially extending radial projection. The cutting insert is located in an insert retaining portion with the axially extending radial projection protruding from an axially extending aperture. The cutting insert is clamped in position by means of a resilient radial force exerted by a resilient clamping jaw on the generally cylindrical portion of the cutting insert.Type: GrantFiled: January 8, 2002Date of Patent: February 24, 2004Assignee: Iscar Ltd.Inventor: Gil Hecht
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Patent number: 6582163Abstract: A tool for chip removing machining includes a holder and a cutting insert removably mounted therein. The insert includes a shaft having opposite ends and defining a first longitudinal center line. A cutting head projects integrally from at least one end of the shaft. The cutting head includes a cutting edge forming an angle of 45° with the first longitudinal center line. Alternatively, or additionally, the cutting head defines a second longitudinal center line forming an angle of 45° with the first longitudinal center line.Type: GrantFiled: March 2, 2001Date of Patent: June 24, 2003Assignee: Sandvik AktiebolagInventors: Per Hansson, Claes Andersson
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Patent number: 6579044Abstract: The invention pertains to a metal-cutting tool with at least one recess (2) for receiving a cutting insert (3). The cutting insert (3) is securely clamped in the recess (2) by an elastic clamping arm (8), which forms the upper contact surface (14) of the recess (2). According to the invention, the lower contact surface (4) of the cutting insert (3) and the lower contact surface (9) of the recess (2) are at least partially configured in an arc. The radius (r) of the arc of the contact surface (9) is designed slightly smaller than the arc (R) of the contact surface (4). The upper contact surface (5) of the cutting insert (3) and the contact surface (14) of the clamping arm (8) are matched in such a way that mutual contact takes place in a range which is at a distance from the symmetry line (S) in the direction of the cutting edge (11) of the cutting insert (3).Type: GrantFiled: November 8, 2000Date of Patent: June 17, 2003Assignee: Plansee Tizit AktiengesellschaftInventors: Thomas Trenkwalder, Helmut Male
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Patent number: 6572309Abstract: A holder includes a seat which removably carries a cutting insert for chip removing machining. The seat can be widened by the manual application of a force to enable the insert to be replaced. The force is applied by a manually actuable key which includes a shaft and an expansion mechanism mounted on an end of the shaft. The expansion mechanism includes a plate which is mountable to the holder in a manner enabling a projection pin of the shaft to enter a slot which constitutes an extension of the insert seat. The portion of the pin entering the slot has an out-of-round cross sectional shape. By rotating the shaft relative to the plate, the pin rotates to widen the slot, and thus to widen the seat. Rotation of the shaft relative to the plate is terminated after a predetermined amount of rotation, in response to mutual engagement between stop surfaces disposed on the shaft and the plate, respectively.Type: GrantFiled: November 7, 2001Date of Patent: June 3, 2003Assignee: Sandvik ABInventors: Per Hansson, Gunnar Jansson
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Publication number: 20030099519Abstract: A rotatable cutting tool comprising a cutting tool body having at least one recess for receiving a replaceable insert. The recess has a wall defined by a deformable clamp extending radially from the tool body, the clamp comprising a leaf isolated from the tool body except at the base of the leaf by an isolating channel in the tool body. The tool further comprising adjustable clamping means for elastically deforming the leaf to retain a replaceable insert in the recess.Type: ApplicationFiled: November 26, 2001Publication date: May 29, 2003Applicant: VALENITE INC.Inventors: James J. Robinson, Kenneth A. Grech, Larry A. Brow
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Patent number: 6565292Abstract: A cutting tool has a cutting insert resiliently clamped in an insert pocket. The cutting insert has an abutment surface in the form of a circular segment protruding from a bottom face. The insert pocket has a base jaw with an abutment surface in the form of a circular arc in which the circular segment is received. As a consequence, the cutting insert cannot be removed by sliding it forwardly in the insert pocket.Type: GrantFiled: December 12, 2001Date of Patent: May 20, 2003Assignee: Iscar Ltd.Inventor: Gil Hecht
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Patent number: 6558087Abstract: A machine tool, which is also suitable for high-speed machining in metal cutting, for which at least one cutting body is held by a clamping device in a plate seat of a tool holder, which is bounded only by a back pressure supporting surface and by a supporting surface, the supporting surface for the clamping device and the supporting surface of the plate seat enclosing an angle, which exceeds the automatic interlocking and opens up to the back pressure supporting surface, wherein the cutting body is provided with a groove, which is engaged by a sliding pin, the diameter of which corresponds essentially to the width of the groove and which is disposed eccentrically and parallel to the axis of rotation of the bearing bolt, which is mounted rotatably in a bearing opening of the tool holder, passing through the supporting surface and/or the back pressure supporting surface, and which can be actuated from the outside.Type: GrantFiled: July 6, 2001Date of Patent: May 6, 2003Inventor: Hans-Peter Hollfelder
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Patent number: 6454498Abstract: A clamping arrangement includes a holder blade having a body portion, the body portion having a key slot and a key recess are disposed relative to each other and relative to an insert-receiving slot such that, when a first keying member of a key is received in the key slot and the second keying member of the key is received in the key recess and the key is moved from an at-rest position to an opening position, the height of the insert-receiving slot is increased against resilient forces of the body portion to a sufficient height to install an insert for the holder blade and, when the key is returned to the at-rest position, the resilient forces cause the height of the insert-receiving slot to decrease and clamp the insert between the upper and lower surface of the insert-receiving slot.Type: GrantFiled: June 30, 2000Date of Patent: September 24, 2002Assignee: Sandvik AktiebolagInventors: Per Hansson, Klas Forsström
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Publication number: 20020131829Abstract: An insert holder includes a head having ridge teeth, and an insert seat plate seated on the head such that ridge teeth thereof mesh with the ridge teeth of the head. The plate forms a V-shaped recess in which a cutting insert is to be received. The recess thus defines a position of support for the insert. A bisector of the V-shaped recess extends parallel to the ridge teeth. The insert seat plate is adjustable in the direction of the bisector (e.g., by individually deployable spacer plates of different thickness) to adjust the position of support defined by the V-shaped recess.Type: ApplicationFiled: March 15, 2002Publication date: September 19, 2002Inventors: Conny Persson, Rolf Hagberg
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Patent number: 6447219Abstract: A cutting insert for grooving operations includes a central shank portion and a forward cutting head. The cutting head includes a front clearance surface having a main cutting edge at an upper end thereof. The clearance surface is non-planar. Rather, the clearance surface exhibits a curvature in order to strengthen the main cutting edge.Type: GrantFiled: September 18, 2000Date of Patent: September 10, 2002Assignee: Sandvik AktiebolagInventors: Pär Tägtström, Per Hansson, Claes Andersson
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Patent number: 6428247Abstract: A double-ended parting or grooving insert comprising a central body portion and a pair of opposite cutting end portions; each cutting end portion having an upper rake surface and front and side relief flanks and a front cutting edge formed at an intersection of the rake surface and the front relief flank; the front relief flank comprising an upper relief flank surface; a lower abutment surface inset with respect to the upper and disposed substantially normally with respect to a longitudinal median plane intersecting the front cutting edges and an intermediate surface serving to bridge the upper and lower surfaces.Type: GrantFiled: November 28, 1995Date of Patent: August 6, 2002Assignee: Iscar Ltd.Inventor: Jacob Friedman
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Publication number: 20020081165Abstract: A cutting tool has a cutting insert resiliently clamped in an insert pocket. The cutting insert has an abutment surface in the form of a circular segment protruding from a bottom face. The insert pocket has a base jaw with an abutment surface in the form of a circular arc in which the circular segment is received. As a consequence, the cutting insert cannot be removed by sliding it forwardly in the insert pocket.Type: ApplicationFiled: December 12, 2001Publication date: June 27, 2002Inventor: Gil Hecht
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Patent number: 6334742Abstract: A parting/grooving insert formed of cemented carbide includes upper and lower surfaces of V-shaped cross-section adapted to mate with corresponding V-shaped walls of a holder. The walls form opposite sides of a slot in which the insert is frictionally held. One of the walls is formed on an elastically movable clamping arm of the holder which is elastically displaced away from the other wall when the insert is forced into the slot. Due to the elasticity of the clamping arm, the insert is frictionally secured. The upper and lower walls include recesses spaced apart by non-recessed portions of the respective surfaces of the insert which are engaged by the walls of the slot. Due to the presence of the recesses, the pressure acting on the non-recessed portions of the insert surfaces is increased.Type: GrantFiled: February 28, 2000Date of Patent: January 1, 2002Assignee: Sandvik Inc.Inventor: Akio Shiraiwa
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Patent number: 6299389Abstract: A cutting tool assembly (10) having a body portion (12) and at least one cutting portion (14), the at least one cutting portion (14) having a clamping portion (16), an insert retaining member (18), a precisely located cutting insert (20) and a securing member (22) for ensuring that precise location of the cutting insert is maintained. If the insert-retaining member becomes damaged due to contact with a workpiece it can be removed from the cutting tool assembly and replaced.Type: GrantFiled: December 10, 1999Date of Patent: October 9, 2001Assignee: Iscar Ltd.Inventor: Gideon Barazani
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Publication number: 20010019685Abstract: A tool for chip removing machining includes a holder and a cutting insert removably mounted therein. The insert includes a shaft having opposite ends and defining a first longitudinal center line. A cutting head projects integrally from at least one end of the shaft. The cutting head includes a cutting edge forming an angle of 45° with the first longitudinal center line. Alternatively, or additionally, the cutting head defines a second longitudinal center line forming an angle of 45° with the first longitudinal center line.Type: ApplicationFiled: March 2, 2001Publication date: September 6, 2001Inventors: Per Hansson, Claes Andersson
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Patent number: 6270294Abstract: A tool for parting or grooving includes a holder to which is mounted an adapter having an insert-receiving slot formed between support and clamping portions of the adapter. The holder includes a serration meshing with a serration of the adapter. Threaded holes are formed through the serration of the holder, and through-holes are formed in the adapter in alignment with respective holes of the holder. Screws extend through the aligned through-hole and threaded hole to secure the adapter to the holder. A slot intersects through one of the through-holes of the adapter to render the clamping portion elastically deformable. That through-hole includes a conically-shaped entrace surface, and the associated screw includes a conical head which acts as a wedge to force the clamping portion into clamping engagement with the insert.Type: GrantFiled: February 2, 2000Date of Patent: August 7, 2001Assignee: Sandvik AktiebolagInventors: Sture Sj{umlaut over (oo)}, Per Hansson
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Patent number: 6261032Abstract: The invention describes a cutting tool, preferably a cutoff parting tool, having one or more replaceable cutting inserts. The cutting inserts comprises on the supporting and/or clamping surfaces embossed elements. Upon clamping the cutting inserts these elements cause a plastic deformation of the contact surfaces on the toolholder. In this fashion, the cutting inserts are additionally stabilized against lateral compressive forces and tensile forces forcing them out of the seat.Type: GrantFiled: April 8, 1997Date of Patent: July 17, 2001Assignee: Schwarzkopf Technologies CorporationInventors: Jurgen Duwe, Rudolf Stricker
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Patent number: 6250854Abstract: A holder blade with a leading portion and a body portion. The leading portion includes a lower jaw and an upper jaw. The upper jaw has an upper side and a clamping surface. The lower jaw and the upper jaw have a gap between them forming a cutting insert pocket. The leading portion also includes an opening extending in a generally rearward direction from the cutting insert pocket, to allow resilient displacement of the upper jaw relative to the lower jaw. The leading portion also includes a protuberance extending from the upper jaw, so that on displacing the protuberance the upper jaw is resiliently displaced and the gap between the upper and lower laws is widened.Type: GrantFiled: August 20, 1999Date of Patent: June 26, 2001Assignee: Iscar Ltd.Inventors: Josef Pano, Ehud Levanon
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Patent number: 6244789Abstract: The indexable insert of the present invention has a cutting edge at the end of a stick-shaped portion projecting from a tool base. The base is shaped to ensure effective clamping, thereby avoiding chatter and backlash. A cutting edge and a rake face are provided at the end of the stick-shaped portion, which is also provided with a side relief face so that chips cut from the workpiece are smoothly carried away. The cutting edge extends sideways beyond the side relief face so that the insert can effectively cut the walls of small and deep holes.Type: GrantFiled: August 31, 1999Date of Patent: June 12, 2001Assignee: Kyocera CorporationInventor: Yuuichi Tsuda
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Patent number: RE37595Abstract: The present invention relates to a turning insert that comprises a generally rectangularly shaped body having a front end surface with a main cutting edge at the intersection between the front end surface and an upper land area. A chipforming area is provided in the forward portion of the upper surface and is shaped in the form of a number of distinctly provided recesses and ridges in order to promote improved chip control and to obtain narrower chips in grooving operations.Type: GrantFiled: November 17, 1997Date of Patent: March 19, 2002Assignee: Sandvik ABInventor: Lars Lindstedt
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Patent number: RE41275Abstract: The indexable insert of the present invention has a cutting edge at the end of a stick-shaped portion projecting from a tool base. The base is shaped to ensure effective clamping, thereby avoiding chatter and backlash. A cutting edge and a rake face are provided at the end of the stick-shaped portion, which is also provided with a side relief face so that chips cut from the workpiece are smoothly carried away. The cutting edge extends sideways beyond the side relief face so that the insert can effectively cut the walls of small and deep holes.Type: GrantFiled: June 11, 2003Date of Patent: April 27, 2010Assignee: Kyocera CorporationInventors: Yuuichi Tsuda, Kiyotada Takayanagi, Taira Kawasaki, Hiroaki Kubo, Toshihisa Hokakoba