99results about "Tool workpiece connection" patented technology

A cutting tool includes a replaceable cutting head including a forward cutting portion and a rearward mounting portion and a head through hole extending therethrough. The mounting portion includes a male coupling member. The male coupling member includes a conically shaped head abutment surface. The cutting tool includes a female coupling member including a conically shaped forward holder abutment surface and an internal thread. The cutting tool includes a fastening member having an external thread. When the cutting tool is in a locked position, the male coupling member is removably retained in the female coupling member by the fastening member located in the head through hole, the fastening member external thread and the holder internal thread being threadingly engaged with each other. The head abutment surface abuts the forward holder abutment surface thereby forming a Morse taper coupling between the male and female coupling members.

A cutter assembly for a cutting tool has a super-hard volume of super-hard material having a proximal end and a distal end and including a cavity; and a cover member. The super-hard volume has a super-hard surface at the distal end including a cutting edge. The cavity has a cavity open end at the distal end. The super-hard surface includes a cavity peripheral area coterminous with the cavity open end and the cover member has a cover peripheral area configured to mate with the cavity peripheral area to allow the cover member to cover the cavity at the cavity open end, the covered cavity providing a housing chamber within the super-hard volume. A method of making a cutter assembly is also disclosed.

The system includes a blank holder and a blank. The blank holder has a receiving area for a substantially disc-shaped blank, the receiving area being curved. The receiving area forms a straight, circular, semi-circular, or arcuate positive-locking profile. The blank has a corresponding guide shell that can be inserted or screwed into the positive-locking profile.

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.

The invention relates to improvements in the area of so-called tool-changing devices (1) which are used on machine tools (18). Here, provision is made to carry out positioning of a tool holder (2) in the working position (6) of the tool holder with the aid of the locking element (7) of the drive device (4) of the tool-changing device (1). An adjusting movement (22) of the locking element (7) into the locking position (9) of the locking element on the tool holder (2) that is required for the use of the tool (3) is used to position the tool holder (2) in the working position (6) thereof, by the adjusting movement (22) of the locking element (7) being converted into a positioning movement (21) of the tool holders (2) (cf. Fig. 3).

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 cutting tool part assembly (10) for a cutting tool. The assembly comprises a body (11) forming an axially forward part of the cutting tool attachable to a cutting head (12) via a clamping element (13) and a fixation element (14). A guide surface (23) provided at the body or cutting head extends in both a radial and an axial direction to support movement of the clamping element in both the radial and axial directions via actuation of the fixation element to force and clamp together axially the head and body.

A stepped deep hole drilling tool is proposed that improves the supply of coolant to the cutting edges and chip removal. Furthermore, the stepped deep hole drilling tool is economical to manufacture.

Milling head (200), comprising: an elongated body portion (201) having a cutting end (210) and an elongated coupling portion (220) spaced from the cutting end (210); and the coupling section (220) comprising: a nucleus (221); and a plurality of generally helical starting threads (222) arranged circumferentially around the core (221), wherein each starting thread (222) determines a starting index and all starting indices are spaced from each other by substantially equal distances or radial positions / circumferential positions around the core (221), characterized in that each starting thread (222) determines a pitch, wherein the pitch of one starting thread (222) differs from the pitch of another starting thread (222).

A tool holder (e.g., shrink fit adapter) with fluid directing passages includes a shank and a fluid / coolant directing structure including one or more nozzles fluidically connected to feeder channels of the shank. The one or more nozzles each include an inner wall and an outer wall configured / shaped to direct fluid / coolant flow both radially inwardly and longitudinally distally and / or to variably modulate fluid / coolant flow around a nozzle outlet of or provided by the nozzle(s) in relation to a longitudinal central axis of the shank. The fluid / coolant directing structure incorporates one of more of: a ring of peripherally located nozzles having geometries / orientations configured to focus and direct thin sheets of fluid / coolant both radially inwardly and distally longitudinally; manifolds for directly feeding nozzle inlets of distally located nozzles; and a nozzle provided by approximately sinusoidally varying surfaces circumferentially disposed about a tool receiving recess of the tool holder for correspondingly variably modulating fluid / coolant flow direction through and exiting from the nozzle.

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.

Rotating cutting tool (10), comprising: a generally cylindrically shaped cutter (14) disposed about a central longitudinal axis (A), the cutter (14) having a first end with an active serrated portion (16), and an opposite second end, the second end having an externally threaded portion (22) disposed thereon; and a generally cylindrically shaped shaft (12) disposed about the central longitudinal axis (A), the shaft (12) having a recessed internally threaded portion (32) formed at a first end, wherein the external thread portion (22) comprises a series of threads (22a) which extend over a first pitch (P 1 ), and the internal thread portion (32) comprises a series of threads (32a) having a second pitch (P 2 ), wherein the cutter (14) and the shaft (12) are selectively coupled via the threaded connection of the externally threaded portion (22) and the internally threaded portion (32), and wherein the cutter (14) has an axial stop shoulder (30) and the shank (12) has an axial stop surface (34), characterized in that the difference between the first gradient (P 1 ) and the second slope (P 2 ) is in the range of about 0.002 to about 0.010 mm, wherein in an assembled state the axial stop shoulder (30) of the cutter (14) bears against the axial stop surface (34) of the shaft (12) and a load concentration on a thread (22a) closest to the axial stop shoulder (30) is avoided.

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 invention relates to a processing device (5) for processing inner surfaces (6, 6') of pipes (2, 2'). Said processing device (5) comprises a support frame (8) for holding at least one processing unit (9). At least two wheels (12), which can be rotated about wheel axes (13), are retained on the support frame (8) so that, by means of said wheels (12), the processing device (5) can be moved within a pipe (2, 2') to be processed. All of the wheels (12) are additionally adjustable and lockable with respect to their rotational angle positions about height axes (14) running perpendicularly to the wheel axes (13), so that the processing device (5) can be moved by means of the wheels (12) both parallel and perpendicularly to the pipe axis of a pipe (2, 2') to be processed.

The invention relates to a tool chuck, its particular use, and a chuck system formed thereby. The tool chuck—for clamping tools having a tool shank—has a sleeve section open at its free end and adjoining a tool chuck base body toward the free end. The sleeve section forms a tool holder for frictionally securing the tool shank in a press fit. The sleeve section consists of an inner sleeve and an outer sleeve. The outer sleeve accommodates the inner sleeve in the ready-to-use state and is joined to it without play.The tool chuck is characterized by an expansion gap between the tool chuck base body, the inner sleeve and the outer sleeve, by at least one first intermediate sleeve between the inner and the outer sleeve or by the fact that a functional surface of at least one of the components joined together in the sleeve section is thermochemically heat-treated and / or coated.

A drill bit for drilling hard materials comprises a drill bit blade (1), the drill bit blade defining a rotation axis (O) and comprising: a first side edge (11) and a second side edge (12) located laterally opposite the rotation axis; a blade tip (A) laterally offset relative to the rotation axis; and a first cutting edge (21) and a second cutting edge (22) starting from the blade tip and terminating at the first and second side edges, respectively; wherein an angle bisector (X) between the first and second cutting edges is inclined at an angle (θ) relative to the rotation axis.

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.

The invention relates to a tool chuck, its particular use, and a chuck system formed thereby. The tool chuck—for clamping tools with a tool shank—has a sleeve section open at its free end and adjoining a tool chuck base body toward the free end. The sleeve section forms a tool holder for frictionally securing the tool shank in a press fit. The sleeve section consists of an inner sleeve and an outer sleeve. The outer sleeve accommodates the inner sleeve in the ready-to-use state and is joined to it without play.The tool chuck is characterized by an expansion gap between the tool chuck base body, the inner sleeve and the outer sleeve, by at least one first intermediate sleeve between the inner and the outer sleeve or by the fact that a functional surface of at least one of the components joined together in the sleeve section is thermochemically heat-treated and / or coated.

The invention relates to a milling tool (1), which produces at least one workpiece shoulder (5) on a workpiece surface in a milling process, the workpiece shoulder having a workpiece bottom (7), which transitions, at an inside corner (9), into a shoulder surface (11) raised therefrom. In particular in the milling process, an axis of rotation (R) of the milling tool (1) is oriented at a right angle to the workpiece bottom (7). According to the invention, the milling tool (1) has, at its tool end face (21), at least one bottom-milling cutting edge (17) running perpendicularly to the axis of rotation (R), for the milling of the workpiece bottom (17). For the milling of the workpiece shoulder surface (11), the milling tool (1) has at least one shoulder-milling cutting edge, which runs along the axis of rotation (R). The shoulder-milling cutting edge is divided into a shoulder-milling main cutting edge (23) and a shoulder-milling secondary cutting edge (25).

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.

A fastening component that is fastened to an arbor so as to fix a cutter, being a rotary cutting tool, to the arbor, the fastening component including: a shaft part screwed into an internal thread of the arbor; an engagement hole formed in a shaft center of an end surface that is opposite to an end surface that is fastened to the arbor; a first flow path formed in a shaft center of the shaft part and opened in an end surface of the shaft part which is fastened to the arbor; a third flow path opened, in a position that is away from the shaft center, in an end that is opposite to an end that is fastened to the arbor; and a second flow path connecting the first flow path and the third flow path.

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.

Deep drilling tool with 2 cutting edges, consisting of: a drill head (10) made of hard metal or ceramic, with a roof-shaped (10 a) or conical (10 b) end geometry, with two main cutting edges (10 c) offset from one another by 180° on the front, with at least two inner channels (10 d) for the coolant supply to these and two free spaces (10 e) for the removal of the chips, a round drill pipe with a conical opening (12) and an intermediate carrier (11) which directs the coolant, which primarily flows back from the two free spaces (10 e) on the drill head (10) and is mixed with chips, through two channels (11 b) into the interior of the pipe (12), and divides the coolant flow supplied on the outside of the drill pipe (12) into direct supply to the cutting area via outer channels (10 f), and indirect supply to the inner channels (10 d), all connected by means of gluing, soldering or welding.