2037results about "Tool holders" patented technology

A tool includes a cutting head and a holder, wherein the cutting head and the holder form two cooperating surfaces that are pressed together. The surfaces possess rows of alternating parallel grooves and ridges for locking the surfaces to each other. Each of the surfaces has two rows of grooves, one row oriented 90 DEG relative to the other row. On one of the surfaces, some of the grooves of one row are in non-intersecting relationship with the grooves of the other row. On the other surface, the rows extend completely across one another, whereby the rows together form a waffle-like pattern. The cooperating surfaces allow at least four separate relative positions between the cutting head and holder.

In an embodiment, the invention provides a tool for chip removing machining, including a replaceable cutting insert and a basic body. The basic body includes a rear fixing part, a front supporting part having an insert seat, and a tightening part spaced apart from the front supporting part by a first gap and from the rear fixing part by a second gap. The tightening part is connected to the basic body via a joint around which the tightening part is pivoted to press the cutting insert against the insert seat by a front finger. The rear fixing part includes a first channel having an inlet and an outlet for feed of a fluid toward the cutting insert. The tightening part includes an internal, second channel that extends between an inlet and an outlet. A hollow coupling member extends between the tightening part and one of the rear fixing part and the front supporting part while bridging the respective gap to establish a fluid communication path between the outlet of the first channel and the inlet of the second channel.

A device increases the surface smoothness of a turned surface. The device comprising a control system with a control unit and an actuator connectible to the control unit and connectible with a tool holder. The actuator in adapted to impart a vibrating motion in the lateral direction to the tool holder. A method will also increase the surface smoothness of a turned surface, comprising the step of controlling the vibrations of the tool holder during turning. The method also comprises the step of imparting a vibrating motion in the lateral direction to the tool holder. Moreover, a turning lathe and a turning tool holder which like the device are designed to generate vibrating motion in the lateral direction.

An indexable turning insert (1) comprising two opposing larges sides formed by a support centre part (4) and a plurality of cutting parts (5-8) projecting outwardly therefrom, each having a cutting edge (9-12) extending between said sides and being spaced apart around the outer perimeter of the centre part for indexing, has four said cutting parts. Each cutting part has a clearance side (13) extending on one of said sides of the insert from the cutting edge of the cutting part towards said centre part while making clearance angles in two dimensions with respect to the cutting edge, and the cutting edge of each cutting part makes an angle being below 90° by less than said clearance angles with the other of said sides of the insert.

A toolholder has a head region, which contains a slot separating the head region into a lower section and an upper section, with a lower seat and an upper section to retain a cutting insert. The head region contains a coolant entrance passage, which receives coolant from a coolant source, and a coolant delivery passage, which discharges coolant toward a cutting insert. The head region further contains a fastener bore, which receives a fastener. The fastener has an axial fastener bore which provides fluid communication between the coolant entrance passage and a coolant reservoir between the fastener and the fastener bore. The coolant delivery passage communicates with the coolant reservoir to receive coolant, which passed from the coolant entrance passage and through the axial fastener bore into the coolant reservoir.

A cutting tool for parting and grooving operations of the kind including a coupling part, which is intended for mounting the cutting tool in a machine tool, and a tool head detachably connected to the coupling part. The tool head includes a basic holder part and, joined to the basic holder part, a blade part, in front portion of which an insert pocket is formed, in which a cutting insert is fastenable. The cutting tool also includes means for supplying cooling agent to the cutting insert. The cooling agent supplying means includes a tube member, which is mounted in a recess, which is transverse to the longitudinal direction of the blade part and arranged in the tool head. The tube member has an inlet for connection to a cooling agent source and an outlet for leading the cooling agent in a direction towards the cutting insert.

A toolholder has a pocket adapted to receive a double-sided on-edge cutting insert, wherein the corners of each side of the insert are radially shifted with respect to one another and has mounting pads preferably mounted about the sides of the cutting insert. The relief area for the corners of the insert is selectively fabricated to maximize the length of the support pads within the pocket of the toolholder.

A tool holder for attaching a complex tool having a plurality of kinds of cutting edges to a turret, has a base portion attachably and detachably formed at the turret. The base portion has a rotatable tool spindle attachably and detachably installing the complex tool thereon. The tool spindle is provided with indexing means for indexably rotating the tool spindle at an indexed position corresponding to each cutting edge of the complex tool. And, clamping means for clamping the tool spindle at a predetermined indexed position is provided. Indexing rotational function and clamping function owned by the tool holder makes the use of the complex tool in the lathe possible.

A tool such as a milling or drilling tool includes a shaft having a front recess in which a cutting head is disposed. A drawbar disposed in the shaft includes a plurality of flexible tongues disposed in the recess. The tongues form a recess in which a rear knob of the cutting head is received. A retainer urges the drawbar axially rearwardly to retain the cutting head in the recess. The shaft includes axial projections at its front end which are received in respective rearwardly open recesses of the cutting head to prevent relative rotation between the shaft and the cutting head.

A metal cutting insert (10) having a pair of cutting portions (10a, 10b) disposed on either end of a shank portion (10c), each cutting portion having a front clearance face (20), the upper boundary of which defines a cutting edge (14). A pair of spaced apart chip breaking surfaces (26a, 26b, 28a, 28b) commence at or near the cutting edge and extend away from the cutting edge. A pair of secondary chip breaking surfaces (44a, 44b, 46a, 46b, 48a, 48b, 50a, 50b) are located downstream of the first chip breaking surfaces and are interconnected with associated first chip breaking surfaces by transition surfaces. A center channel (30) is located between the chip breaking surfaces and includes an entry portion (30a). A tool holder (100) includes a base (102) and clamping arm (104) which together define a gap (106) for receiving one of the cutting portions of the insert.

A cutting tool in which a cutting insert is resiliently retained. The cutting insert comprises 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.

A tool coupling includes first and second bodies held together by a clamping mechanism. The first body includes a first surface having a first serration formed therein, a first hole extending through the first surface, and a side surface having a second hole extending therethrough and intersecting the first hole. The second body includes a second surface facing the first surface and including a second serration configured to mesh with the first serration. A drawbar projects from the second surface and extends into the first hole. The drawbar includes a plurality of wedge surfaces. The clamping mechanism includes a screw disposed in the second hole and nuts threadedly mounted thereon for movement toward and away from the drawbar. Each nut includes a plurality of wedge surfaces arranged to engage the wedge surfaces of the drawbar to pull the second body toward the first body in a manner bringing the first and second serrations into meshing engagement with one another.

In an embodiment, the invention provides a tool for chip removing machining, including a replaceable cutting insert and a basic body. The basic body includes a rear fixing part, a front supporting part having an insert seat, and a tightening part spaced apart from the front supporting part by a first gap and from the rear fixing part by a second gap. The tightening part is connected to the basic body via a joint around which the tightening part is pivoted to press the cutting insert against the insert seat by a front finger. The rear fixing part includes a first channel having an inlet and an outlet for feed of a fluid toward the cutting insert. The tightening part includes an internal, second channel that extends between an inlet and an outlet. A hollow coupling member extends between the tightening part and one of the rear fixing part and the front supporting part while bridging the respective gap to establish a fluid communication path between the outlet of the first channel and the inlet of the second channel.

A cutting insert is retained in a cutting tool through a combination of resilient clamping and abutment by a threaded fastener. The threaded fastener, which abuts but does not penetrate cutting insert, pre-loads the cutting insert against cutting forces, by biasing the cutting insert against a jaw of the cutting tool.

The present invention provides a method for the horizontal stacking of laminations 10 and donuts to form a stator core. A stator generator frame 2 has multiple keybars 6 that run the axial length of the frame. The laminations 10 have grooves 12 there-in that engage the keybars to provide a secure fit of the laminations to the generator frame. By extending two or more of the keybars 6, these extensions 7 may be used as rails on which the laminations may be horizontally inserted into the stator frame.

To provide a machine tool in which supporting stiffness of a tool post is increased, thereby enabling improvement in machining accuracy. When seen in a Z-axis direction, a tool post 5 includes: a supporting member 30 having a pair of left and right leg parts 30a, 30a and an upper beam part 30b coupling at least upper ends of the both leg parts 30a with each other; and a turret 31 to whose outer circumferential portion a plurality of tools are attached. The supporting member 30 is supported to be movable in a Z-axis direction between a first and a second spindle headstock 3, 4, and the turret 31 is supported to be movable in an X-axis direction by turret guide rails 33, 33 which are disposed on front faces of the left and right leg parts 30a, 30a.

A clamping and adjustment apparatus for a cutting tool is described in which a plate-shaped cutter insert is prestressable and fastenable by means of a tension screw with its bottom surface against a seat surface such that it is supported with lateral wall sections in a positionally fixed manner on a cutter support. In order to allow precise adjustment of the cutter insert when little space is available, the clamping and adjustment apparatus has an adjustment wedge which can be actuated by means of a pressure screw in a direction (V) that extends essentially parallel to the seat surface. The adjustment wedge is accommodated in the cutter support in a form-fitted and displaceable manner. The cutter insert is supported on the adjustment wedge and can be adjusted by means of it. Moreover, a tool which is equipped with this clamping and adjustment apparatus is described as well as a tool cartridge which is used for it.

A cutting tool (2) includes a front part (5), which has a cutting insert (6), as well as a rear part (7), which is detachably mountable in a holder (3) in an appurtenant machine. The tool (2) comprises a plurality of nozzles (13), which have the purpose of spraying jets (4) of high pressure cooling liquid towards the cutting insert (6). Supply of cooling liquid to these nozzles is guaranteed via a duct system positioned inside the tool, which system includes an equally large number of mutually spaced-apart ducts as the number of nozzles, the nozzles being adjusted in order to direct the jets thereof towards different points of impact on one and the same cutting insert. In this connection, it is possible to close the individual ducts inside the tool individually in order to enable spraying of only one jet at a time towards the appurtenant point of impact on the cutting insert.

A multi-axis turning center has a spindle head, a spindle rotatably supported by the spindle head, and a table or a headstock for gripping and rotating a workpiece thereon. The table or the headstock is disposed in confronting relation to the spindle. The spindle head is relatively movable in the three mutually transverse axes directions to the workpiece gripped and rotated by the table or the headstock. A multi-point turning tool is mounted on the spindle and having a plurality of tips, for turning the workpiece gripped and supported by the table or the headstock. The spindle head is movable to translate the multi-point turning tool to one of positions around the workpiece, and the tips are selectively used depending on the one of the positions to turn the workpiece.

A rotational power servo toolpost includes a plurality of rotational tool holders, which can freely rotate 360 degrees, to cut a workpiece from various angles. The rotational power servo toolpost has a turret base, a turret, tool holders mounted on a side surface of the turret and having a variety of needed tools, a tool-holder-rotating device, and a tool-rotating device. When the tool holder with the needed tool rotates along with the turret to the preset area, a servo motor of the tool-holder-rotating device drives the related members to freely rotate the tool holder around 360 degrees according to the machining requirements. The tool-driving device then drives the tool, thereby cutting the workpiece from various angles.

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.

A metalcutting insert that is useful in chipforming and material removal from a workpiece. The metalcutting insert includes a metalcutting insert body, which includes a cutting edge having at least one discrete cutting location. The metalcutting insert body further contains a distinct interior coolant passage communicating with the discrete cutting location. The distinct interior coolant passage has a coolant passage inlet defining a coolant passage inlet cross-sectional area, a coolant passage discharge defining a coolant passage discharge cross-sectional area, and an axial coolant passage length. The distinct interior coolant passage defines a coolant flow cross-sectional area along the axial coolant passage length thereof. The metalcutting insert further includes a plurality of surface features for enhancing coolant flow to the cutting edge.

A cutting tool assembly for boring and internal grooving operations includes a tool head having a removably secured cutting insert at a forward insert receiving end and a rear mating end with a male or female type tool holder coupler in the form of an engagement protrusion or cutting holder receiving pocket. The tool head is fixed to a tool holder with a front mating end having a female or male tool head coupler in the form of a tool head receiving pocket or engagement protrusion. Following assembly, at least three abutting wall surfaces and an adjacent support surface of the tool holder coupler are in contact with at least three non-coplanar abutment surfaces and an adjacent supporting surface of the tool head coupler, respectively, and a fastening screw member extends through a through bore in the tool holder coupler engaging a threaded screw bore in the tool head coupler.

A coolant tube (21) is to be arranged in a tool holder, the coolant tube (21) having an inlet opening (23) for coolants, a cover (31) at the inlet opening (23) for preventing chips from entering into the coolant tube (21), and an exchangeable insert tube (59) arranged within the coolant tube (21) and holding the cover (31).

An insert-indexable tool includes a holder and a head member having an insert mount seat by which an insert is to be held. The head member includes a first mount face and a second mount face that intersect each other from a view facing toward the cutting face in a state in which the insert is held by the insert mount seat. The holder includes a first receiving face abutting the first mount face and a second receiving face abutting the second mount face. The first receiving face and the second receiving face are respectively provided with a first fixing threaded hole and a second fixing threaded hole into which fixing screws are inserted into the first mount face and the second mount face. The first fixing threaded hole and the second fixing threaded hole are located so that the fixing screws do not intersect each other.

There is provided a precision roll turning lathe which can not only machine with high precision circumferential transverse grooves in the peripheral surface of a roll but can also machine with high precision longitudinal grooves in the peripheral surface. The precision roll turning lathe includes: a bed 10; a headstock 12, mounted on the bed 10, for rotating a roll-shaped workpiece while holding one end of the workpiece by means of a chuck, said headstock having an indexing axis (C axis) for performing circumferential indexing of the workpiece; a tail stock 14, mounted on the bed 10 and disposed opposite the headstock 12, for rotatably supporting the other end of the workpiece; a carriage 16 including a saddle 26 mounted on the bed 10 movably in the longitudinal direction (Z-axis direction) of the workpiece, and a table 28 mounted on the saddle 26 movably in a direction (X-axis direction) perpendicular to the longitudinal direction of the workpiece; a tool swivel 30 mounted on the table 28 and having an indexing axis (B axis); a tool post 33 mounted on the tool swivel 30 and having a plurality of cutting tools 36 attached thereto; and a fly cutter spindle device 34 mounted to the tool post 34 and having a cutter spindle for rotating a fly cutter 39.

A vibration dampening through coolant tool holder, such as a boring bar, for machining operations, has an internal chamber within which a vibration dampening mass is supported at each axial end by resilient buffer members. A vibration adjusting piston is linearly moveable with the tool holder and has dampening adjustment engagement with the mass. A dampening adjustment mechanism causes linear movement of the piston and applies controlled force of the piston to the mass and has a micrometer type rotary adjustment member that imparts linear force to the piston. The linear piston adjustment can also have a worm gear drive mechanism for controlling linear piston movement.

A tool holder assembly that includes a tool holder member adapted to be secured to a machine tool and a cutting insert support / clamp for clamping and supporting a cutting insert. The support / clamp member includes a plurality of serrations that are engageable with complementally formed serrations on the tool holder whereby a tight fitting engagement is achieved using removable fasteners. The support / clamp includes a clamping arm elastically movable towards and away from a support base and a clamping block connected to the connecting arm adapted to receive clamping forces from a threaded clamping bolt. The clamping bolt defines a force applying surface located in a first plane whereas the clamping block defines a force receiving surface located in a second plane, the first and second planes located at a diverging angle with respect to each other. The clamping block includes an edge portion engageable with a step on the tool holder that is spaced from the clamping arm. The diverging planes and the engagement of the clamping block with the stepped portion increases the force applied by the clamping arm to the cutting insert for a given adjustment of the clamping bolt and resists rollover of the insert.

A tool holder assembly and method for intentionally inducing modulation in a machining process. The tool holder assembly is configured for mounting in a tool block on a machining apparatus and includes a tool holder body configured to be secured to the tool block of the machining apparatus, a tool holder mounted on the tool holder body and configured for securing a cutting tool thereto, and a device for imposing a superimposed modulation on the tool holder so as to move the cutting tool relative to the tool holder body and thereby relative to the tool. The tool holder assembly is useful in a process for producing chips having a desired shape and size, and particularly to a method of controllably producing nanocrystalline chips.

A tool for chip removing machining, including a replaceable cutting insert and a basic body. The basic body includes a rear fixing part, a front supporting part having an insert seat, and a tightening part situated over the support part, and spaced-apart from the front supporting part by a first gap and from the rear fixing part by a second gap. The tightening part is connected to the basic body via a joint. The joint is formed of at least one elastically resilient material portion and has an axis around which the tightening part is pivoted in order to press the cutting insert against the insert seat by a front finger. The rear fixing part includes an internal channel for feed of a fluid in the forward direction through the basic body. The internal channel extends into a second channel inside the tightening part via a channel section that is entirely or partly housed in a bridge which, like the joint, is formed of the material in the basic body, and which bridges one of the first and second gaps.