139results about "Tool workpiece connection" patented technology

A cutting tool has a cutting insert removably secured to a holding portion of an insert holder. The cutting insert 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.

A tool chuck for clamping tools incudes a sleeve section with an open free end adjoining a tool chuck main body towards the free end. The sleeve section forms a tool receptacle for fixedly receiving the tool shank in a friction-fitting manner with an interference fit. The sleeve section is formed of inner and outer sleeves. The outer sleeve, in an operationally ready state, receives the inner sleeve and is joined thereto without clearance. There is an expansion gap between the tool chuck main body, the inner sleeve and the outer sleeve, or at least one first intermediate sleeve is disposed between the inner and outer sleeves, or a functional face of at least one of the structural parts joined to one another at the sleeve section is thermochemically heat-treated and / or coated. A method of using a tool chuck and a chuck system are also provided.

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.

Drill, comprehensive: a body that has the following features: a shaft at the first end of the body, an end surface at the second end of the body opposite the shaft and a body span extending from the second end of the body to the first end, the body being designed to rotate about an axis passing through the shaft and the end face; and a cutting head attached to the end face of the body, wherein the cutting head is designed for drilling a hole in a workpiece, where the ratio of the cross-sectional area of ​​the hole, measured perpendicular to the axis, to the cross-sectional area of ​​the body through the body groove, measured perpendicular to the axis, is greater than 2.

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.

To provide a shrink fit chuck with novel attenuation.SOLUTION: The invention relates to a clamp chuck for clamping a tool having a tool shank. The clamp chuck is provided with a sleeve part (4). The sleeve part (4) opens at its free end, is composed preferably of a conductive material, and forms a tool holder (5) for frictionally engaging and fixing the tool shank by press-in by shrink fit. In the clamp chuck, the sleeve part (4) is preferably composed of an inner sleeve (7) across its full length in an axial direction of the tool holder (5) and an outer sleeve (8) which receives the inner sleeve (7) in the state dynamically prepared, is bonded to the inner sleeve (7) without a play and is preferably composed of a conductive material.SELECTED DRAWING: Figure 1

Provided is an end mill having a cutting edge section having a convex shape having one curved surface obtained by dividing a tapered body by a plane, the tapered body having a tip section and a circular bottom surface, the tip of the tip section being located on a center line penetrating through the center of the bottom surface, the tapered body having a circumferential side surface, and the circumferential side surface being located on the circumferential side surface. The circumferential side surface includes an expanded-diameter region having a larger diameter than the bottom surface, and the plane includes the centerline.

The rotary cutting tool 20 includes an interchangeable cutting head 22 and a tool holder 24. The interchangeable cutting head 22 includes a forward cutting portion 26 and a rearward mounting portion 28. The mounting portion 28 includes a male coupling member 38 including back-tapered conical external threads 42. The tool holder 24 includes a female coupling member 68 including internal threads 72. When the rotary cutting tool 20 is in the locked position (FIG. 7), the external threads 42 are threadingly engaged with the internal threads 72.

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.

A cutting insert 10 comprising a cutting tip 14 and a base insert 12 on which the cutting tip 14 is mounted, the cutting insert 10 being provided with a passage PA which is formed along a boundary surface between the cutting tip 14 and the base insert 12 so as to extend from a boundary part, in an upper surface of the cutting insert 10, between the cutting tip 14 and the base insert 12 to another boundary part, in a lower surface of the cutting insert 10, between the cutting tip 14 and the base insert 12.

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 blank is made of superhard material, used to be fixed on a substrate, and can be processed into a tool cutting edge, which includes a first side surface and a second side surface, both of which are twisted at a set helix angle. After the blank is fixed to the substrate, it is processed into a cutting edge, such as a main cutting edge and a center cutting edge, located on the same blank made of superhard material. The blank of the present invention is applied to the processing of the tool cutting edge, and has a continuous and complete center cutting edge formed of superhard material at the center of rotation. Compared with existing tools, it not only improves the processing accuracy and processing efficiency, but also improves the strength of the center, and extends the service life during cutting processing, so that the overall cutting performance of the tool is significantly improved.

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 (2) for cutting a workpiece, comprising a cutting head (10) and a cutting head driver (12) connectable to the cutting head (10), the cutting head (10) and the cutting head driver (12) each having a body (14, 24) from whose end faces axially undercut projections (16, 26) project in the axial direction, the projections (16, 26) each having torque transmission faces (18, 28) designed to be complementary to one another, axially undercut, preferably axially angled, and adjacent to one another in a connected state, the projections (16, 26) being dimensioned such that in a connected state an end face (20) of the projection (16) of the cutting head (10) is axially adjacent to an end face (32) of the body (24) of the cutting head driver (12).

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.

The invention relates to a drilling tool, in particular a rock drilling tool (11), with a drilling section (15) for machining a workpiece, in particular comprising a hard metal, and with a shaft section (17) extending in particular along a longitudinal axis A, characterized by a transport recess (23) for transporting particles, in particular extending transversely to a longitudinal axis A.

The invention relates to tool holders with a tool receptacle, in particular chucks such as shrink-fit chucks, collet chucks, hydraulic expansion chucks, and high-pressure chucks, and a tool shank, in particular a rotary tool, held therein, wherein the tool holder includes an anti-pull-out device that prevents axial movement of the tool. This anti-pull-out device comprises at least one locking element and at least one corresponding locking groove that receives the locking element, which interact in a positive-locking manner. Both the locking element and the locking groove are designed to be at least partially ball-headed. Preferably, the tool has the locking groove.Due to preferably spirally arranged locking grooves along the cylindrical shank of rotary tools, the helix directions of which correspond to the groove direction of the tool, the tool is axially locked, preventing it from axially migrating out of the tool holder during operation. Additionally, force-exerting elements are arranged to ensure that the tool rests against the pull-out protection without play after shrink-fitting.

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.