41results about "Tool workpiece connection" patented technology

A cutting insert for a modular rotary cutting tool is disclosed. The cutting insert may include a shaft, an opposing insert centering surface, and a convex torque transmitting insert driving surface.

A task of insertion of a tool is continued even when the insertion of the tool is failed in a shrink fitting method. A shrink fitting system for shrink-fitting a tool to a holder includes: a heating device that heats the holder; an insertion device that inserts the tool into the heated holder; and a control device for the shrink fitting system. The insertion device includes a sensor that detects a failure of insertion of the tool into the holder. Based on the failure of the insertion of the tool into the holder being detected, the control device performs at least one of outputting, to the insertion device, a command for adjusting an insertion position of the tool or for replacing the tool and outputting, to the heating device, a command for re-heating the holder.

The invention relates to a cutting tool comprising a support body and a cBN or PCD cutting edge tip, wherein the cBN or PCD cutting edge tip is connected to the support body by a brazing joint of 5-150 pm thickness, the support body is a cemented carbide comprising 3-25 wt% of a metallic binder, optionally up to 25 wt% of a carbide or carbonitride of one or more elements of group 4, 5 or 6 of the periodic table, and the remainder WC, wherein the metallic binder comprises at least 40 wt% of Ni, and wherein the brazing joint comprises in order from the support body: a first layer of TiC, immediately adjacent to the support body, having an average thickness of 10-400 nm; a second layer having an average thickness of 0.5-8 pm comprising on average at least 5 wt% of the metal Ni, on average 25-60 wt% of the metal Cu and on average 15-45 wt% of the metal Ti; and a third layer having an average thickness of 4-145 pm comprising the metal Ag and the metal Cu.

A cutting tool includes a supporting body and a cBN or PCD cutting edge tip attached to the supporting body via a 5-150 μm braze joint. The supporting body is cemented carbide having 3-25 wt % of a metallic binder, optionally up to 25 wt % of carbides or carbonitrides of one or more elements of group 4, 5, or 6, and the rest WC. The metallic binder includes at least 40 wt % Ni, and the braze joint has, in the order from the supporting body, a first layer of TiC situated next thereto, with an average thickness of 10-400 nm, a second layer, with an average thickness of 0.5-8 μm, having in average at least 5 wt % metallic Ni, in average 25-60 wt % metallic Cu and in average 15-45 wt % metallic Ti, and a third layer, with an average thickness of 4-145 μm, having metallic Ag and metallic Cu.

This tip manufacturing device, in which a cutting edge is joined to a pedestal, comprises: a first electrode in contact with the pedestal; a second electrode in contact with the cutting edge; a current generator for generating a current flowing between the two electrodes; and a movement device for moving the pedestal in contact with the first electrode and / or the cutting edge in contact with the second electrode in a movement direction. The tip manufacturing method includes: supplying a pedestal; supplying a cutting edge to a recess in the pedestal; pressing the cutting edge against the pedestal; and causing a current to flow across the cutting edge and the pedestal with the pressure being applied. The cutting tool tip is provided with a cutting edge and a pedestal that are joined directly to one another. In the pedestal: the recess has a first surface and a second surface that are adjacent to one another at a prescribed angle; each surface has a protrusion that projects from a contacting surface with which the cutting edge comes into contact; and when the cutting edge is being attached to the recess, the protrusion is softened and is directly joined to the cutting edge.

What is provided is a modular cutting tool (1; 40) with a base body (2) extending along a tool axis and a tool head (3) connected via a positive coupling to the base body (2), wherein the positive coupling is formed from front toothings (4), which are engaged with one another, on the base body (2) and tool head (3), which each have a plurality of radially running teeth (5), which are distributed equidistantly around the tool axis. For each front toothing (4) the tip surfaces (7) of the teeth (5) lie on a virtual inner conical surface in the tool head (3) or base body (2) with the tool axis as cone axis, and the tip surfaces (7) of the teeth (5) are rounded concavely.

A cutting tool (20) includes a cutting head (22) and a tool shank (24), each having an axial abutment surface (66,76a). One of the two includes a coupling pin (38), while the other includes a pin receptacle (80) and a clamping through bore (96) that opens out to the pin receptacle. The coupling pin (38) has an engagement groove (52) and the pin receptacle has an engagement ridge(90). The coupling pin is received into the pin receptacle. The cutting head and tool shank are releasably attached together by a fastening member that passes through the clamping through bore and acts on the coupling pin so that the engagement groove abuts the engagement ridge and the axial abutment surfaces on each part abut each other.

A cutting insert for a modular rotary cutting tool is disclosed. The cutting insert can comprise a shank, opposing insert centering surfaces, and convex torque transmission insert drive surfaces.

The solid PCD / PCBN cutting tool tip with coolant through-holes of this invention is made of polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN) and contains 1-3 coolant holes. The manufacturing process begins with the preparation of part A, which is formed from PCD or PCBN. To improve its electrical conductivity, part A is joined to part B, a conductive material such as cemented carbide or steel, by brazing with a silver solder paste. Subsequently, the coolant holes in the brazed assembly of part A and part B are formed using a high-voltage electrical discharge machining (EDM) machine. After drilling, parts A and B are separated by heating to a temperature of 650 °C or higher. In the final step, part A (now with through-holes) is brazed onto a cemented carbide shank that already contains matching holes to ensure the alignment of the coolant channels.

A cutting tool includes a cutting head and a tool shank, each having an axial abutment surface. One of the two includes a coupling pin, while the other includes a pin receptacle and a clamping through bore that opens out to the pin receptacle. The coupling pin has an engagement groove and the pin receptacle has an engagement ridge. The coupling pin is received into the pin receptacle. The cutting head and tool shank are releasably attached together by a fastening member that passes through the clamping through bore and acts on the coupling pin so that the engagement groove abuts the engagement ridge and the axial abutment surfaces on each part abut each other.

The cutting tool includes a replaceable cutting head, which includes a front cutting portion, a rear assembly portion, and a head through-hole extending through the front cutting portion and the rear assembly portion. The assembly portion includes a male coupling member, which includes a conical head contact surface. The cutting tool includes a female coupling member, which includes a conical front holder contact surface and a female threaded portion. The cutting tool includes a fastening member having a male threaded portion. When the cutting tool is in the locked position, the male coupling member is removably held within the female coupling member by the fastening member located within the head through-hole, and the fastening member's male threaded portion and the holder's female threaded portion screw into each other. The head contact surface contacts the front holder contact surface, thereby creating a Morse tapered connection between the male coupling member and the female coupling member.

To address wear issues and improve performance, we manufacture hard tips for PCD / PCBN cutting tools that have coolant through-holes. [Solution] The hard tip for PCD / PCBN cutting tools having coolant through holes according to the present invention is made from PCD or PCBN and has 1 to 3 coolant holes. The manufacturing process begins with creating a part A made of PCD or PCBN. To enhance conductivity, part A is joined to part B, which is a conductive material such as carbide or steel, by brazing with silver brazing paste. Next, coolant through holes are formed in the brazed joint of parts A and B using a high-voltage electrical discharge machine (EDM). After drilling, parts A and B are separated by heating to a temperature of 650°C or higher. In the final step, part A is brazed to a carbide shank that already has holes that fit part A, ensuring that the coolant paths are properly aligned.

A modular cutting tool (1; 40) is provided, comprising a base body (2) extending along a tool axis and a tool head (3) connected to the base body (2) via a positive-locking coupling. The positive-locking coupling is formed by meshing face teeth (4) on the base body (2) and tool head (3), each of which has a plurality of radially extending teeth (5) distributed equidistantly around the tool axis. For each face tooth (4), the end faces (7) of the teeth (5) lie on a virtual internal conical surface in the tool head (3) or base body (2) with the tool axis as the conical axis, and the end faces (7) of the teeth (5) are concavely rounded.

A cutting tool has a cutting insert (20) removably secured to a holding portion of an insert holder. The cutting insert (20) has opposing first and second end surfaces with an insert peripheral surface and a central axis extending therebetween, at least one cutting portion, and at least one mounting cut-out. Each cutting portion has a cutting edge and an adjacent relief surface facing in a first rotary direction about the central axis. Each mounting cut-out extends between the first and second end surfaces and has a first flank surface and an adjacent first upper slope surface. The first flank surface faces in a second rotary direction about the central axis and the first upper slope surface faces away from a median plane located midway between the first and second end surfaces. The first upper slope surface extends away from the median plane with increasing distance from the first flank surface.

To provide a drilling tool featuring stable radial clamping, characterized by superior connection strength, high machining precision, convenient assembly / disassembly, long lifespan, and low production cost.SOLUTION: A clamping member comprises a handle part 21 and a clamping part 22. Two chip discharging grooves are formed in the clamping part to form a two-piece clamping structure. A cutting member is matched with the clamping part, and in a direction away from a cutting part along a rotation center axis of a drilling tool, a connecting part is sequentially provided with a first outer circumferential surface and a second outer circumferential surface, and the clamping part is sequentially provided with a first inner circumferential surface and a second inner circumferential surface. The first inner circumferential surface is matched with the first outer circumferential surface to form a first radial clamping structure, and the second inner circumferential surface is matched with the second outer circumferential surface to form a second radial clamping structure. The first radial clamping structure and the second radial clamping structure are capable of independently achieving radial clamping of the cutting member by the clamping member, and an interference amount of the first radial clamping structure is greater than that of the second radial clamping structure.SELECTED DRAWING: Figure 1

Turning cutting tool (20, 100, 300) which includes the following: an elongated body arranged around a longitudinal axis (AA), wherein the longitudinal body includes a spiral groove (32) and a cutting tip (22) made of polycrystalline diamond, the cutting tip (22) comprising: Cutting edges (30) extending radially outwards to an edge (39) on an external radial circumference of a side wall (49) of the rotary cutting tool (20); an inner section (50) with an inner apex angle (γ); and an outer section (52) with an outer tip angle (Γ), wherein the inner tip angle (γ) is in the range between 110 degrees and 140 degrees and the outer tip angle (Γ) is in the range between 145 degrees and 180 degrees and the inner section (50) projects axially beyond the outer section.

A cutting insert for a modular rotary cutting tool is disclosed. The cutting insert may include a shaft, opposing insert centering surfaces, and convex torque transmission insert drive surfaces.

A land preparation tool includes a cutting surface having a blade and a mounting interface opposite the cutting surface. The mounting interface of the land preparation tool is configured to detachably connect to a tool holder having a top surface, an end surface, a mounting surface opposite the end surface, and opposing first and second side surfaces extending between the end surface and the mounting surface. The mounting surface has an apex extending downwardly from the top surface and first and second mounting faces. The first mounting face extends inwardly from the first side surface toward the apex and the second mounting face extends inwardly from the second side surface toward the apex.

The cutting tool (20) includes a cutting head (22) and a tool shank (24), each having axial contact surfaces (66, 76a). One of the cutting head (22) and the tool shank (24) includes a coupling pin (38), while the other includes a pin receiver (80) and a fastening through-hole (96) opening into the pin receiver. The coupling pin (38) has an engagement groove (52), and the pin receiver has an engagement ridge (90). The coupling pin is received into the pin receiver. The cutting head and the tool shank are releasably mounted together by a fastening member passing through the fastening through-hole, so that the engagement groove abuts against the engagement ridge with respect to the coupling pin, and the axial contact surfaces on each part abut against each other.

[Solution to the Problem] An end mill (1) has a rod-shaped base material (2) made of cemented carbide. Two to four flutes (3) extend along on a surface of the base material (2) with a helix angle (3a) of 0° to 45° relative to an axial direction of the base material (2). A normal cutting-edge groove (4) extends linearly between the flutes (3). A normal cutting-edge (11), which is a PCD tip (10), is disposed in the normal cutting-edge groove (4) and protrudes from the normal cutting-edge groove (4). A cutting-edge lead angle (11a) of the normal cutting-edge (11) is 15° to 55°. A reverse cutting-edge groove (5) is located farther from an end of the base material (2) than the normal cutting-edge groove (4) and extends linearly between the flutes (3). A reverse cutting-edge (12), which is a PCD tip (10), is disposed in the reverse cutting-edge groove (5) and protrudes from the reverse cutting-edge groove (5). A cutting-edge lead angle of the reverse cutting-edge (12) is -55° to -15°.

The present invention relates to a tool blank (30) for a cutting tool (1), such as an end mill, drill or engraving tool, comprising a tool shank (2) adapted to be received in a rotary tool holder of a processing machine and a cutting head blank (3) fixedly connected to the tool shank (2). The cutting head blank (3) comprises a plurality of cutting head blank elements (5) which are fixedly connected to one another, preferably soldered to one another and made of a hard material, in particular polycrystalline diamond. Furthermore, the present invention relates to a cutting tool (1), such as an end mill, drill or engraving tool, in which at least one tool cutting edge (15) is generated in the tool blank (30) according to the invention, which extends over the plurality of fixedly interconnected cutting head blank elements (5). Furthermore, the present invention relates to a method for manufacturing a tool blank and a method for manufacturing a cutting tool.

Main body (3) of a cutting tool (1) with replaceable tip, comprising: a cylindrically shaped cylindrical section (32) consisting of a first metallic material and extending in an axial direction (AX); and an internal threaded section (33) which is provided on an inner circumference (40) of the cylinder section (32) and can be screwed to an external threaded section (24) of a cutting head (2), wherein the internal threaded section (33) comprises the following: a first internal thread section (34) consisting of a second metal material different from the first metal material, and wherein the first internal thread section (34) extends in a section between a top of an internal thread crest (37) of the internal thread section (33) and a section (38) corresponding to an effective diameter (D2) of the internal thread section (33); and a second internal thread section (35) consisting of the first metal material and continuously transitioning into the inner circumference (40) of the cylindrical section (32), wherein the second internal thread section (35) is a remaining section of the internal thread section (33) without the first internal thread section (34), and wherein the first internal thread section (34) is connected to the second internal thread section (35).

A cutting tool may include a cutting accessory defining an opening and a channel formed on an inner surface of the cutting accessory. A cutting tool may include an arbor assembly including a shank having a first end received in the opening of the cutting accessory and a second end configured to be coupled to a power tool, a body movable relative to the shank, and an engagement member movable with the body relative to the shank, the engagement member configured to selectively engage the channel of the cutting accessory to releasably secure the cutting accessory to the shank.

The invention relates to a method of making a tool comprising a joining a maraging steel joining partner and a cemented carbide joining partner by brazing. The present invention also relates to a tool made according to this method. The method comprising depositing a Ni coating onto the maraging steel part prior to applying the filler material comprising at least 70wt% Cu. The braze joint shows excellent shear strength.

The present invention relates to a cutting tool comprising a support and a cutting tip of cBN or PCD, the cutting tip of cBN or PCD being attached to the support via a brazed joint having a thickness of 5-150 μm, the support being a cemented carbide comprising 3-25 wt. % metal binder, optionally up to 25 wt. % carbides or carbonitrides of one or more elements of groups 4, 5 or 6 of the Periodic Table of the Elements, and the balance WC, the metal binder comprising at least 40 wt. % Ni, the brazed joint comprising, in order from the support, a first layer of TiC having an average thickness of 10-400 nm located adjacent the support, a second layer having an average thickness of 0.5-8 μm and comprising an average of at least 5 wt. % Ni metal, an average of 25-60 wt. % Cu metal, and an average of 15-45 wt. % Ti metal, and a third layer having an average thickness of 4-145 μm and comprising Ag metal and Cu metal.

A boring tool (10) has a cutting insert (1), a holder (2), and a pressing member (3). The cutting insert includes a base member (50) and a cutting member (30). The base member includes a first side surface (11), a second side surface (12), a third side surface (13), and a fourth side surface (14). The holder includes a front end surface (74), a rear end surface (75), and an outer peripheral surface (76). The holder has a first hole (71) and a second hole (72) formed therein. The first hole opens at the front end surface. The second hole opens at the outer peripheral surface. The holder includes a stopper (79). A surface constituting the second hole includes a first inner side surface (91) and a second inner side surface (92). The pressing member is in contact with the fourth side surface in a state of being disposed in the first hole. The base member is disposed in the second hole. The first side surface is in contact with the first inner side surface. The second side surface is in contact with the second inner side surface. The third side surface is in contact with the stopper. When viewed in a direction along an extension direction of the second hole, a distance between the first inner side surface and the second inner side surface becomes smaller as it goes from the front end surface toward the rear end surface.

A boring tool has a cutting insert, a holder, and a pressing member. The cutting insert includes a base member and a cutting member. The base member includes a first side surface, a second side surface, a third side surface, and a fourth side surface. The holder includes a front end surface, a rear end surface, and an outer peripheral surface. The holder is provided with a first hole and a second hole. The first hole is opened in the front end surface. The second hole is opened in the outer peripheral surface. The holder includes a stopper. A surface defining the second hole includes a first inner side surface and a second inner side surface. The pressing member is in contact with the fourth side surface in a state in which the pressing member is disposed in the first hole.

A task of insertion of a tool is continued even when the insertion of the tool is failed in a shrink fitting method. A shrink fitting system for shrink-fitting a tool to a holder includes: a heating device that heats the holder; an insertion device that inserts the tool into the heated holder; and a control device for the shrink fitting system. The insertion device includes a sensor that detects a failure of insertion of the tool into the holder. Based on the failure of the insertion of the tool into the holder being detected, the control device performs at least one of outputting, to the insertion device, a command for adjusting an insertion position of the tool or for replacing the tool and outputting, to the heating device, a command for re-heating the holder.

A boring head (101) for securing a boring tool (102) to a rotatable tool holder, wherein the boring tool is intended for chip removal machining of a workpiece when the boring tool is rotated about an axis of rotation defining an axial direction (Z), the boring head comprising: - a main body (103) mounted to the rotatable tool holder; - a piston (104) for holding the boring tool, the piston being accommodated within a guiding cavity (105) of the main body and being movable in a radial direction (X) relative to the main body, wherein a circumferential surface of the piston comprises a flat face (106) extending parallel to the radial direction; - positioning means (110) for radial positioning of the piston within the guiding cavity; - combined orientation and fixation means (120) for orienting and fixing the piston relative to the main body, the combined orientation and fixation means comprising: o a blind sleeve fixedly mounted in the main body, a flexible end wall of the blind sleeve facing the flat face of the piston; and o a fixation screw configured for threaded engagement with the blind sleeve, wherein the combined orientation and fixation means are configured such that, when the fixation screw is tightened, the flexible end wall is pressed against the flat face of the piston, 20 thereby pressing the piston against the main body for simultaneous orientation and fixation of the piston relative to the main body.

Rotary-driven cutting tool (1) with a holder (10) extending along an axis of rotation (2) and a cutting head (20) held coaxially on the holder (10) by screwing it to a threaded sleeve (13) arranged in the holder (10), wherein the threaded sleeve (13) is arranged in the holder (10) in a rotationally fixed manner and is axially supported at least in the direction of the cutting head (20), and the cutting head (20) is axially clamped against the holder (10) by means of a threaded spindle (30) screwed into the threaded sleeve (13), characterized in that the threaded spindle (30) has a differential thread with opposing thread sections (30a, 30b) which are screwed into a threaded bore (13e) in the threaded sleeve (13) and a threaded bore (20c) in the cutting head (20).