Abstract: A double-ended parting cutting insert. The cutting insert includes two cutting portions at opposite ends thereof which are oriented at 90° to each other. The cutting insert includes a pair of rake and support engagement grooves, the rake and support engagement grooves of each one of the pair converging in a direction away from a respective cutting portion. An insert holder includes a clamping portion having a resilient upper clamping jaw having an upper engagement ridge and a lower base jaw having a lower engagement ridge. A gap therebetween forms an insert receiving slot that has a slot opening. The upper and lower engagement ridges converge in a direction away from the slot opening. When the cutting insert is releasably attached to the insert holder, to constitute a fastened position of a cutting tool, the cutting insert is located in the insert receiving slot and resiliently clamped therein.

Abstract: A rotary tool may include a base extended along a rotation axis from a first end toward a second end. The base may include a cutting part and a flow path located inside the base. The cutting part may include a first flute and a first ridgeline. The first flute may be spirally extended from the first cutting edge. The first ridgeline may be a ridgeline formed by the first flute and an outer peripheral surface adjacent to the first flute on a rear side in a rotation direction. The flow path may include a first sub flow path extended from a main flow path toward a side of the second end. A first angle formed by the rotation axis and the first sub flow path may be smaller than a helix angle formed by the rotation axis and the first ridgeline.

Abstract: A cutting tool rotates about a rotation axis, and includes a tip end portion. The tip end portion includes a partially spherical surface that is brought into contact with a workpiece. The surface is provided with a plurality of recesses disposed apart from each other. An opening edge of each of the plurality of recesses constitutes a cutting edge.

Abstract: A rotary milling tool body includes a circumferential clamping portion with opposite first and second side surfaces and a plurality of insert pockets and integral clamping jaws arranged therealong. Each clamping jaw includes opposite forward and rearward abutment surfaces which extend between the first and second side surfaces. Each clamping jaw further includes a throughgoing pressure hole which opens out only to the first and second side surfaces. Each clamping jaw further includes a pressure member which is located in the pressure hole and transferable between disengaged and engaged positions.

Abstract: A cutting tool having at least one segment pocket formed at a peripheral surface thereof, and respectively, at least one cutting tool segment, detachably mounted in each segment pocket. Each cutting tool segment has a longitudinal segment axis extending in a rearward to forward direction, and upper and lower ends, located on opposite sides of the segment axis. The lower end has two spaced apart lower abutment surfaces. An insert retention portion is formed in the upper end, at a forward end of the cutting tool segment. A resilient retention arm is formed in the upper end, rearwardly spaced apart from the insert retention portion. The retention arm has an upper abutment surface. In a side view of the cutting tool segment, the upper and lower abutment surfaces are linear.

Abstract: A cutting tool includes a cutting insert and a tool holder. The tool holder includes: a base for supporting a bottom surface of the cutting insert; a clamping arm for pressing a top surface of the cutting insert; an insert receiving space formed between the bottom surface of the clamping arm and the base; and a supporting surface which defines an end of the insert receiving space and supports an end of the cutting insert. The cutting insert includes: a first pressing region on the front portion of the top surface which is oriented in a vertically upward direction; and a second pressing region on the rear portion of the top surface which is oriented at an angle in the front direction.

Abstract: This detachable insert type cutting tool is provided with a cutting insert and a holder which holds the cutting insert. An insert mounting seat on which the cutting insert is mounted and upper and lower jaw sections which pinch the cutting insert are provided in the holder. The insert mounting seat is provided between the lower surface of the upper jaw section and the upper surface of the lower jaw section. Convex curve outer surfaces are formed on one side of the upper and lower jaw sections when viewed from the leading end sides of the upper and lower jaw sections, and concave curve inner surfaces are formed on the other side of the upper and lower jaw sections. In a state where the cutting insert is fixed to the insert mounting seat, the concave curve inner surface of the upper jaw section is disposed at a position retreated further radially outward than an arc surface extending along the concave curve inner surface of the lower jaw section.

Abstract: A rotary cutting tool has a disc-shaped tool body and a cutting insert. The cutting insert is resiliently retained by jaws having tangentially-oriented abutment surfaces and defining, together with a holding member, an insert pocket of the tool body. The holding member is configured to bend in a radially-outward direction during rotation of the tool body about the rotation axis, and to engage a stopping recess of the cutting insert to oppose dislodgement of the cutting insert from the tool body.

Abstract: A slotting cutter includes a disc-like cutter body rotatable in a predetermined direction on a central axis perpendicular to a plane of the cutter body. A plurality of cutting insert receiving pockets and a corresponding number of thread holes are formed about a perimeter of the body. A cutting insert is replaceably mounted in each insert receiving pocket of the cutter body, and a clamping screw is replaceably threaded in each thread hole of the cutter body. A cantilevered portion is disposed between each insert receiving pocket and a respective thread hole that exerts a downward force to securely hold the cutting insert in the cutter body when the clamping screw is threaded into the thread hole.

Abstract: A cutting tool for grooving, parting and turning machining operations is capable of grooving to unlimited depths of cut. The cutting tool includes an indexable double-ended cutting insert having a downwardly extending insert clamping portion resiliently clamped in a self-retaining manner in an insert pocket so that chip formation is not hindered during such machining operations.

Abstract: The invention relates to a tool, in particular a revolving tool for machining, in particular metal cutting, workpieces, comprising a carrier body, a cutting body arranged detachably on the carrier body, and a clamping bracket for the positionally accurate fixation of the cutting body relative to the carrier body, wherein the cutting body is pressed against a supporting surface on the carrier body in a planar manner. According to the invention, the clamping bracket is integral with the carrier body and connected to the carrier body by way of a material joint. Furthermore, the cutting body is supported in the direction of the material joint on a face supporting surface of the clamping bracket, wherein the supporting surface is arranged on the carrier body at an acute angle (?) with respect to the face supporting surface of the clamping bracket and oriented in the direction of the material joint.

Abstract: A cutting insert has the geometry of a tetrahedron with triangle base areas wherein each triangle base area has a tetrahedral frustum as a clamping body for fixing the cutting insert in a tool seat of a carrier tool. Additionally, a tool seat for the cutting insert includes clamping jaws to secure the cutting insert.

Abstract: A rotary cutter head includes a rotary body, resilient clamping arm, and at least one cutting blade. The clamping arm clamps the cutting blade radially inwardly first rather than in a circumferential direction in order to positively lock the cutting blade radially, and thereby prevent the cutting blade from migrating out of position slightly during high speed rotation of the cutter head.

Abstract: A planing head, cylindrical body for a planing head and a method of manufacture thereof are provided. The planing head includes a cylindrical body having an axis of rotation, an outer surface around the axis of rotation, and opposite first and second end faces. A plurality of blade assemblies is arranged along the outer surface. A plurality of grooves is provided in the outer surface and each groove is configured to receive a respective one of the plurality of blade assemblies. A hydraulic pressure system for supplying a hydraulic pressure to each of the blade assemblies is provided. The hydraulic pressure system includes a plurality of transverse channels for receiving a pressurised hydraulic fluid and a plurality of oblique channels hydraulically linking the plurality of transverse channels. Each transverse channel extends at least partially through the cylindrical body.

Abstract: The present invention relates to cutting tools and, more particularly, to cutting tools having inserts and insert-receiving recesses with curved surfaces. The cutting tool includes a toolholder having a recess and an insert adapted to be received in the recess. The recess has a top surface with a curved portion, a bottom surface with a curved portion, and a fixed stop surface. The insert has a top surface with a curved portion, a bottom surface with a curved portion, and a stop surface. The curved portion of the top surface of the insert and the curved portion of the bottom surface of the insert are curved such that they abut against the curved portion of the top surface of the recess and the curved portion of the bottom surface of the recess, respectively, when the stop surface of the insert abuts against the fixed stop surface of the recess. The present invention also relates to a cutting tool kit, a cutting insert and a method for positioning an insert relative to a toolholder.

Abstract: A cutting tool in which a cutting insert is resiliently retained. The cutting insert includes a locating portion and a cutting portion having a rake surface and a relief surface. The locating portion extends from the cutting portion away from the rake surface.

Abstract: A cutting insert rotated about its axis may be utilized during a metalworking operation and applied against the rotating workpiece to enhance tool performance. A method, including an assembly with a rotatable insert mounted to a toolholder may be utilized to achieve this result.

Abstract: 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.

Abstract: A rotatable cutting tool having s support region (1) with an end surface (2) and a plurality of recesses (4) extending from the end surface (2) and in which, respectively, a plurality of cutting elements (5) are arranged, with each recess having a rigid stop surface (7) for a cutting element (5) and faces in a rotational direction (R) of the tool, and a gripping surface (8) facing in a direction opposite the tool rotational direction (R) and cooperating with the cutting element, with the gripping surface (8) being displaceable by a respective locking element in the direction opposite the tool rotational direction.

Abstract: 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.

Abstract: 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.

Abstract: A cutting tool assembly having a tool body portion and at least one cutting portion, the at least one cutting portion having a tool clamping portion, an insert retaining member, a precisely located cutting insert and a securing member for ensuring that precise location of the cutting insert is maintained. The tool clamping portion has a tool base jaw and a tool clamping jaw. A slot extends generally rearwardly from a gullet to provide limited flexibility to the tool clamping jaw.

Abstract: 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.

Abstract: A cutting tool assembly having a tool body portion and at least one cutting portion, the at least one cutting portion having a tool clamping portion, an insert retaining member, a precisely located cutting insert and a securing memberfor ensuring that precise location of the cutting insert is maintained. The tool clamping portion has a tool base jaw and a tool clamping jaw. A slot extends generally rearwardly from a gullet to provide limited flexibility to the tool clamping jaw.

Abstract: 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.

Abstract: A cutting insert clamping mechanism for use in a cutting tool. The cutting tool has a body portion and a clamping portion. The clamping portion includes a base jaw and a clamping jaw. The clamping jaw has on its lower side a forward clamping surface separated by a recess from a rearward clamping surface. A first narrow bridge section connects the clamping jaw to the body portion of the cutting tool. A second narrow bridge section extends generally towards the rearward clamping surface. As a result of the two narrow bridge sections, the forward and rearward clamping surfaces can resiliently bend independently, and thereby are capable of applying independent clamping forces to the insert.

Abstract: A cutting tool assembly rotatable about an axis of rotation having a tool in which a replaceable insert is mountable. The tool has two clamping jaws spaced apart by an insert receiving slot. The insert has top and bottom surfaces each of which has two abutting surfaces. The abutting surfaces have a rear abutting portion and a front abutting portion and in accordance with one embodiment the insert is thicker at its rear abutting portion than at its front abutting portion. This structure of the insert provides positive axial locking of the insert, ensuring no axial movement of the insert relative to the tool during machining. The abutting surfaces of the top surface slope towards each other and inwardly towards a central portion of the insert. Similarly, the abutting surfaces of the bottom surface slope towards each other and inwardly towards the central portion of the insert. The insert is thereby effectively radially clamped by the clamping jaws in a double dove-tail manner.

Abstract: This invention relates to slot milling tools and the like where a number of inserts (4) are detachably mounted at the periphery of a disc shaped carrier means (1). The seats (3) of the inserts are arranged within integral holding projections arranged and shaped relatively to the intended positions to the inserts that on operation the radial component of the cutting force biases the holding force acting against the insert so that it increases on increase of cutting force. This is achieved by arranging at the essentially radially projections (7) an obliquely located nose portion (8) engaging the insert.

Abstract: The invention concerns a cutter head, in particular a planing cutter head, whose blade carrier (1) has at least one mounting (5), facing radially outwards, for a blade (7). Fitted in each mounting (5) is a wedge grip (17) which can be moved relative to the blade carrier (1) and which presses the blade (7) against a stop (9) on the mounting (5) when moved with at least a component of motion radially outwards. Located between the blade (7) and the wedge grip (17) is a mounting strip (21) which can be moved relative to the wedge grip (17) and the stop (9) on the mounting (5) and which releases the blade (7) for removal radially outwards when the wedge grip (17) is displaced inwards.

Abstract: Slot or track milling tool device wherein a number of inserts having an insignificant axial extension are arranged in seats at the peripheral portion of an essentially disc shaped tool holder body. The inserts, being of a per se known kind, have at least one abutment face arranged obliquely relative to the insertion direction of the insert. The abutment face in contact with an abutment portion at each seat of the tool holder body. Each such abutment portion being a tongue shaped portion integral with the tool holder body. For each tongue shaped portion, there is arranged a rotatable clamping device having a surface arranged in a cam or eccentric fashion. The rotatable clamping device is intended to displace the tongue shaped portions so that an abutment point thereon reaches an engagement with and remains in engagement with the obliquely rearwardly facing engagement surface of the insert.

Abstract: A metal cutting tool assembly comprising a rigid holder blade, an insert receiving slot formed in a leading end of the holder blade and defined between a resiliently displaceable clamping jaw formed integrally with the holder blade and rigid base jaw forming part of the holder blade, spaced apart displacement and supporting surfaces respectively formed in or on the clamping jaw and the holder, and a slot opening key, a pair of spaced apart projecting prongs of the key with adapted to engage the surfaces. At least one of the prongs is displaceable with respect to the holder blade so as resiliently to displace the clamping jaw outwardly with respect to the base jaw into an opening position for insertion or removal of an insert.

Abstract: A metal cutting tool assembly comprising a rigid holder blade, an insert receiving slot formed in a leading end of the holder blade and defined between a resiliently displaceable clamping jaw formed integrally with the holder blade and rigid base jaw forming part of the holder blade, spaced apart displacement and supporting surfaces respectively formed in or on the clamping jaw and the holder, and a slot opening key, with a pair of spaced apart projecting prongs of the key adapted to engage the surfaces. At least one of the prongs is displaceable with respect to the holder blade so as resiliently to displace the clamping jaw outwardly with respect to the base jaw into an opening position for insertion or removal of an insert.

Abstract: A rotary cutter head includes integral clamping members for releasably securing cutting blades in recesses formed in the cutter head. Each clamping member is formed with a free end portion which defines one side of the recess. An end of the clamping member located oppositely of the free end portion is integrally connected to the cutter head and defines a resilient hinge portion. The free end portion is resiliently biased by the integral hinge portion to a position which allows the blade to be slidably received in the recess. Threaded fasteners are operable to cause the free end portion to pivot about the hinge portion and to drive the free end portion toward an oppositely located side of the recess so as to clamp the blade in the recess.

Abstract: A parting or grooving tool includes a narrow support blade and a cutting insert removably securable in a recess formed by upper and lower jaws at the front portion of the blade. The inert is clamped into place by an actuator which engages in a slot that extends at an angle in relation to the longitudinal axis of the recess such that the lower jaw is subjected to an elastic bending of such nature that a downwardly directed clamping force is exerted towards the upper surface of the cutting insert.

Abstract: A rotary cutting tool is disclosed which has a tool body, a cutting insert, a clamp member and a clamp screw. The tool body has an insert-receiving recess and a clamp member-receiving aperture formed in an outer surface thereof. The insert-receiving recess has a bottom and at least two bearing walls disposed so as to be inclined with respect to each other. The clamp member-receiving aperture is disposed so as to be communicated with the recess. The cutting insert includes a plate having a front face serving as a rake surface and a rear face. The cutting insert is releasably received in the recess with the rear face being mated with the bottom, in such a manner that the front face is partly located in the clamp member-receiving aperture. The clamp member has an axis therethrough and an engagement portion. The clamp member is releasably accommodated in the clamp member-receiving aperture so as to be axially slidable, with the engagement portion being held in abutment with the front face of the cutting insert.

Abstract: A drill bit has a throw-away drill bit tip in the form of an insert (21, 31) secured to a shank (22, 32) to be mounted in a drilling tool. The insert (21, 31) is disengageably mechanically connected to the shank (22, 32) without any screws. The insert (21, 31) is formed of a silicon carbide whisker reinforced alumina sintered body, and the shank (22, 32) is made of steel. Due to this structure, the insert (21, 31) has an excellent wear resistance and an adhesion resistance. The shank (22, 32) has a sufficient toughness against breakage. Such a drill bit does not require any resharpening for continuous use during bit life.

Abstract: A drill bit has a throw-away drill bit tip in the form of an insert (21, 31) secured to a shank (22, 32) to be mounted in a drilling tool. The insert (21, 31) is disengageably mechanically connected with the shank (22, 32) without any screws. At least a cutting edge of the insert (21, 31) is made of a diamond or cubic boron nitride sintered body, and the shank (22, 32) is made of steel. Due to this structure, the insert (21, 31) has an excellent wear resistance and an adhesion resistance. The shank (22, 32) has sufficient toughness against breakage. Such a drill bit does not require any resharpening for continuous use during bit life.

Abstract: A plurality of cutter teeth (50) are mounted on outer peripheral portions of a rotary cutter wheel (22). Each tooth (50) forms a socket (74) that receives a projections (26) on the wheel (22). Opposite parallel inner socket surfaces (76) and a parallel outer surface (78) of the tooth (50) abut side surfaces (28) of the projection (26) and an edge surface (34) on the wheel (22) to snugly engage the tooth (50) on the wheel (22). The abutting surfaces (76, 28 and 78, 34) are substantially tangent to the wheel's cutting direction. A roll pin (80) may be used to further secure the tooth (50). The pin (80) fits snugly in a hole (70) in the tooth (50) and loosely in a hole (32) in the projection (26). Upper and lower tooth walls (56, 58) preferably extend along opposite surfaces of the wheel (22) beyond the projection (26).

Abstract: A metal-cutting insert for performing cut-off and grooving operations and of the so-called self-gripping type. The insert comprises a front end with a cutting edge, first and second elongated straight grippable surfaces extending in converging relationship rearwardly from the front end and a rear end defined by first and second straight surfaces of approximately equal length that intersect each other in an included obtuse angle. The grippable surfaces each have a concave transverse contour. The first and second end surfaces extend respectively from the first and second grippable surfaces and intersect at a location to coincide with the intersection of a rear locating surface and a key-receiving aperture of a support blade when the insert is fully received within the support blade recess.

Abstract: A centrifugally operated clamping device for clamping a reversible blade insert in a planing tool ensures positive engagement between the clamp and the blade. The clamping device includes a clamping wedge which has an inverted T-shaped cross-section and is positioned in a similarly configured groove in the tool. The wedge is biased relative to the bottom of the groove so that the clamp will be easily disconnected from the blade.

Abstract: A cutting tool assembly is disclosed as having a cutting blade of U-shape and a holder with flexible arms which may be expanded to grip the cutting blade.

Abstract: A throw away cutting tool comprising a holder formed with a wedge groove and a throw away insert having a cutting edge at one end thereof and a wedge portion at the other end, the wedge portion being adapted to be clamped in the wedge groove by elasticity of the material of the holder. The holder is at least partly made of cemented carbide for higher rigidity and cutting stability. Also, the radius of curvature at the deep end of the wedge groove is optimized for crack resistance. Further, the angle of the V-ridge on the holder is interrelated to the angle of the V-groove in the insert for more holding stability and crack resistance.

Abstract: A tool holder includes an insert receiving pocket formed by a pair of clamping jaws. The upper jaw is resiliently pivoted about a bridge portion by a clamping device. The clamping device includes a screw which wedges a clamping element having a tapered tooth into a slot which urges the upper jaw towards the lower jaw to clamp the insert.

Abstract: A reconditioned tool comprises a cylindrical insert cut from a damaged tool, such as a hog mill, with a milling face formed on one end and a transverse dovetail tenon cut in the other end. The dovetail tenon engages a transverse dovetail mortise in the end face of a cylindrical holder. A transverse slot in the holder splits the end of the holder into two axially extending end sections each of which includes one-half of the dovetail mortise. A clamping device, such as a bolt, draws the two end sections of the holder together to pull the insert firmly against the end faceof the holder through wedging action of the two halves of the dovetail mortise against the dovetail tenon. A locking pin inserted through aligned transverse grooves in the holder and insert prevents a lateral displacement of the insert relative to the holder.

Abstract: The invention relates to a tool for chip removal comprising a cutting insert mechanically clampable within a slot of a holder. The insert is clamped by the resilient force arising during deflection of a clamping arm provided in the holder. The insert and the clamping arm are engageable at contact regions separated from each other, a first contact region of which forms an acute angle relative to the lower side of the insert.

Abstract: Sugar cane is processed using an apparatus, which includes an input end with a comb back conveyor for controlling the quantity of cane passing to the remainder of the apparatus; an aligning; first cleaning and thin out section, where randomly oriented cane stalks are aligned and foreign bodies, especially stones and ferrous objects are removed from the cane; a billeting or cutting section for cutting the stalks into billets; a second cleaning section in the form of a cleaning tower in which vertically moving air is used to remove leaves, dust and any other trash from the flow of cane; a chute and pivotally mounted swing conveyor for distributing cane billets in an elongated, partitioned distributing hopper; a surge elimination chute; a billet aligner and delivery unit for delivering cane billets to a plurality of separators for separating the epidermis from the cane billets and separating the rind from the core; and a discharge section, including conveyors for discharging the separated material from the appar

Abstract: Rotary slot cutting tools comprising disc shaped tools having cutting elements peripherally disposed on the discs. The cutting elements include chip forming means for narrowing the width of the chip below the width of slot being cut.

Abstract: An expandable wedge assembly which releasably secures a cutting blade or wafer like indexable insert in a pocket of a cutting tool. The wedge assembly includes flexible legs which expand or flex outwardly to secure the insert against a wall of the pocket and which unexpand or unflex to release the insert for indexing or replacement. Preferably, a screw and ball means movable in a bore in the wedge effect the flexing and unflexing of the wedge. A locater assembly for positioning the insert in the pocket also can be provided. Preferably, the structure and operation of the locator is similar to the structure and operation of the wedge.

Abstract: A metal cutting tool assembly comprising a rigid holder blade, an insert receiving slot formed in a leading end of the holder blade and defined between a resiliently displaceable clamping jaw formed integrally with the holder blade and rigid base jaw forming part of the holder blade, spaced apart displacement and supporting surfaces respectively formed in or on the clamping jaw and the holder, and a slot opening key, with a pair of spaced apart projecting prongs of the key adapted to engage the surfaces. At least one of the prongs is displaceable with respect to the holder blade so as resiliently to displace the clamping jaw outwardly with respect to the base jaw into an opening position for insertion or removal of an insert.

Abstract: A metal cutting tool assembly comprising a rigid holder blade, an insert receiving slot formed in a leading end of the holder blade and defined between a resiliently displaceable clamping jaw formed integrally with the holder blade and rigid base jaw forming part of the holder blade, spaced apart displacement and supporting surfaces respectively formed in or on the clamping jaw and the holder, and a slot opening key, a pair of spaced apart projecting prongs of the key with adapted to engage the surfaces. At least one of the prongs is displaceable with respect to the holder blade so as resiliently to displace the clamping jaw outwardly with respect to the base jaw into an opening position for insertion or removal of an insert.