Abstract: A rotating tool is held in a tool holder. The tool holder includes a male tapered portion. The tool holder is rotated by a rotating-tool main shaft. The rotating-tool main shaft includes a hollow main shaft. The hollow main shaft includes a circular conical hole formed in a tip and corresponding to the male tapered portion. The hollow main shaft includes a fluid passage to detect that the male tapered portion is properly attached to the circular conical hole, and an opening to blow out a fluid. The opening is provided in a portion offset from the circular conical hole.

Abstract: A reducing sleeve for fastening a machining tool in a tool holder is described. Said reducing sleeve comprises a reducing sleeve body, which comprises a first tool-side end and a second tool holder-side end. In addition, at least one coolant supply channel is provided in the reducing sleeve body. Furthermore, a multifunctional interface is arranged at the second end and is designed for coupling to a sealing unit and a safety unit. Additionally presented is a modular system for providing a reducing sleeve assembly, which comprises such a reducing sleeve, a sealing unit, and a safety unit. In addition, a machining assembly with a tool holder, a reducing sleeve, and a machining tool is presented.

Abstract: An ultrasonic surgical instrument comprises a cylindrical shaft and a blade at a distal or free end of the shaft, the blade being unitary and continuous with the shaft, without an intervening joint. The shaft has a longitudinal axis and the blade includes a flat or planar blade body with a proximal end eccentrically disposed relative to the shaft axis. Thus, the blade body or at least a proximal end portion thereof is disposed eccentrically relative to the shaft. The blade in its entirely may be inclined relative to the shaft axis or extend parallel thereto.

Abstract: A retention knob tool. A tubular body, is held in the tubular sleeve, and symmetrically formed around an axis. The tubular body also has an internal bore. Four locking ball retainer sockets are formed in the tubular body. A retention knob aperture is recessed within a top plate. Four balls are movably held in the ball retainer sockets. A tubular end stop is affixed to the tubular body rearward end. A drive tool cavity is recessed within the tubular body rearward end. The sleeve forward end includes a recessed circumferential portion bounded by a first thicker portion of the inside wall, where the first thicker portion bears against the balls when the tubular body is translated rearwardly into an inward lock position and the inward force is removed from the plurality of balls when the tubular body is extended forwardly into a release position.

Abstract: A tendon-driven robotic gripper is disclosed for performing fingertip and enveloping grasps. One embodiment comprises two fingers, each with two links, and is actuated using a single active tendon. During unobstructed closing, the distal links remain parallel, creating exact fingertip grasps. Conversely, if the proximal links are stopped by contact with an object, the distal links start flexing, creating a stable enveloping grasp. The route of the active tendon and the parameters of the springs providing passive extension forces are optimized in order to achieve this behavior. An additional passive tendon is disclosed that may be used as a constraint preventing the gripper from entering undesirable parts of the joint workspace. A method for optimizing the dimensions of the links in order to achieve enveloping grasps of a large range of objects is disclosed and applied to a set of common household objects.

Abstract: A coupling is described for connecting an interchangeable tool head to a machine part of a pressing device. The machine part features a receptacle region (A) for accommodating a shaft section of an interchangeable tool head, which can be axially displaced in the receptacle region (A), and the shaft section comprises an end face (S) and at least two engaging elements. The at least two holding elements are arranged in the receptacle region (A) and a guide groove is respectively formed between two adjacent holding elements. Also described are tools such as pressing devices utilizing the couplings and related methods.

Abstract: A tapered tool holder fixture for installing a retention knob into a tool holder and to determine whether the retention knob has produced distortions in a tool holder surface. A support stand supports a test gauge assembly that includes a mounting ring to which a tool holder is clamped, a gauge portion for receiving a tool holder surface and a camming ring for moving the gauge portion into and out of engagement with the tool holder surface. The mounting ring, camming ring and gauge portion are held together by bolts which allow the relative movement between the gauge portion and a tool holder held by the mounting ring and allow relative rotation between the camming and mounting rings whereby a rotatable detent arrangement moves the gauge portion towards and away from the tool holder. An indicator monitors the position of the gauge portion in order to detect distortions.

Abstract: A vibration damping mechanism allows increase of an absorption amount of vibration energy, with less possibilities of increase in the manufacture cost of a vibration damping weight and of reduction in the strength of a shaft section. Within a cylindrical hollow portion formed inside the shaft section, there are accommodated a plurality of weight members divided from each other along the circumferential direction about the axis of the hollow portion. An urging member is provided for urging the weight members toward the axis such that dividing faces of adjacent weight members are brought into surface contact with each other.

Abstract: A retention knob for use with a tool holder that is less prone to distorting a tapered tool holder surface, especially if it is over-tightened. The retention knob includes a knob head, a flange engageable with an end of a tool holder shank, a pilot segment receivable by the counter bore defined by said tool holder shank and a threaded segment spaced from said flange by an undercut segment. The threaded segment is configured so that it has a length that is substantially the minimum length required to achieve maximum thread holding strength. The undercut segment is configured to space the threaded segment from its head so that a distal end of the threaded segment is substantially near the bottom of the tapered bore forming part of the tool holder.

Abstract: Electric spindle for numerical control machines structured to lock and rotationally drive a tool about a predetermined reference axis locally coinciding with the longitudinal axis of the tool; the electric spindle comprising: an outer structural casing that is structured to be rigidly attachable to a generic numerical control machine; an electric motor that is housed within the structural casing and is provided with a drive shaft, which projects/emerges with its front end outside the structural casing while remaining locally coaxial to the reference axis of the electric spindle; a rotating thrust-bearing bushing or sleeve, which is fitted in an axially rotatable manner on the front end of the drive shaft via interposition of a first set of annular rolling bearings, and is maintained coaxial to the reference axis of the electric spindle by a second set of annular rolling bearings, which are interposed between the rotating bushing or sleeve and the structural casing; and at least one disassemblable tool-holder

Abstract: An interface between a receptacle body and an insert designed, in particular, as a tool or workpiece insert, comprises a receptacle body (2) having a cylindrical receiving bore (4), which is circumscribed by a first plane surface (6) extending at a right angle to the bore axis and in which a first cone surface (9) is arranged, said first cone surface being coaxial with the bore axis and being arranged so that its tapered end faces toward the plane surface. The insert (3) has a pin (15) that is disposed to be plugged into the receiving bore (4) and is circumscribed by a second plane surface (22). At an axial distance from the second plane surface (22), said pin has a second cone surface (22), the tapered end of said second cone surface being arranged so as to face toward the second plane surface.

Abstract: A chuck device for holding an unmodified, circumferentially round tool shaft or collet includes an annular head portion having a distal end surface, a laterally spaced coupling end section, an outer circumferential surface, and a central longitudinally extending bore with an inner circumferential bore surface to slidingly receive the tool shaft or collet with the tool axis aligned collinearly with the bore axis. The head portion includes a first slot extending inwardly on one side of the annular head and normal to the distal end surface, and a second slot extending from the outer circumferential surface normal to and intersecting the first slot to form stationary and pivotable segments having a bore-facing, tool grasping surface that radially directs a compressive grasping force in an amount sufficient to hold the tool with a slip-torque of up to about 430 inch-lbs. at a rotational speed of up to at least about 20,000 rpm.

Abstract: A hydraulic coupling system includes an adapter, a shell mill, a threaded member, and a chucking membrane. The adapter includes a tapered pilot disposed on and extending from an end face. The shell mill includes a central counter bore for enabling the pilot of the adapter to be inserted therein. The threaded member includes at least one sealing member and is capable of being threaded into a threaded bore of the shell mill. The chucking membrane includes an intermediate portion disposed between two flanges and forms a fluid-tight channel for hydraulic fluid. The chucking member has a tapered inside surface. When the threaded member is threaded into the shell mill, the tapered surfaces of the pilot and the chucking membrane cause an axial force to seat the end face of the shell mill firmly against the end face of the adapter.

Abstract: A tool holding module comprises a fixture seat and a tool rod. The fixture seat has a first outer surface on an external wall, a first top surface on one end, and a fixture head is located on the same end. The fixture head has a second outer surface on an external wall and a second top surface on one end. The internal wall of the tool rod has first and second inner surfaces respectively corresponding to the first and second outer surfaces, and has first and second butting surfaces respectively corresponding to the first and second top surfaces. The tool rod and fixture seat are connected to enfold the fixture head. The security of the tool holding module is enhanced via close contact of the first outer and inner surfaces, the second outer and inner surfaces, the first top and butting surfaces, the second top and butting surfaces.

Abstract: A spindle attachment includes a device body having an attachment surface detachably attached to an end face of a spindle head. Fixed and movable teeth move the body in a direction of an axial line of the spindle to engage the spindle head and the body so as to freely restrict or release rotation of the body with respect to the spindle head. A coil spring urges the body so that the attachment surface is pressed onto the end face of the spindle head with the fixed and movable teeth ready for engagement. A pressure cylinder causes fluid pressure to act on the attachment surface against the spring force to release engagement between the fixed and movable teeth. A key and a key groove transmit rotation of the spindle to the body with the fluid pressure of the cylinder acting on the attachment surface of the device body.

Abstract: Systems and methods are provided for providing parallel muxing between servers in a cluster. One such system can include a cluster of one or more high performance computing systems, each including one or more processors and a high performance memory. The cluster communicates over an InfiniBand network. The system can also include a middleware environment, executing on the cluster, that includes one or more application server instances. The system can further include a plurality of muxers, wherein each application server instance includes at least one muxer. Each muxer can receive information from a plurality of threads to transmit to a different muxer on a different application server instance over the Infiniband network using a plurality of parallel channels.

Abstract: A high-frequency spindle has a tube shaft extending along and rotatable about an axis, a chuck carried on a front end of the shaft, adapted to fit with a tool or tool holder, and a ball cage in the shaft and having a radially extending window. A locking ball os radially displaceable in the window between a holding position engaging in a seat of the tool and a freeing position clear of the seat. An angled surface is engageable radially with the ball, and an actuating rod is axially shiftable and coupled to the cage or to the angled surface. An actuator can axially shift the rod and thereby relatively axially displace the ball and the angled surface and cam the ball with the angled surface into the holding position. A primary spring biases the rod so as shift the ball with the angled surface into the holding position.

Abstract: In the case of a tool clamping device, in particular, for an operating spindle of a processing machine, with an activation element (3) that can be moved by a drive between a first position, in which the tool clamping device is located in a clamped position, and a second position, in which the tool clamping device is located in a released position, a sensor is present in the form of at least one electrical component for detecting a position of the activation element (3). The sensor is integrated structurally into the tool clamping device and at least one section of the activation element (3) directly forms a component of the one or more electrical components, wherein its position influences an electrical property of this component. The component can be an electrical switch whose closed state depends on the position of the activation element (3) in that at least one section of the activation element (3) is electrically conductive and forms a contact electrode of the switch or a part of such an electrode.

Abstract: A bit retaining system for a rotary tool or device such as a router is disclosed. The bit retaining system may include a collet assembly and a control assembly. The collet assembly may include a spindle, a collet adapted to receive the bit, and a collet nut. The collet assembly may further include a collet gear mounted on the collet nut and/or a spindle gear mounted on the spindle. The control assembly selectively engages the collet assembly to drive the collet nut and/or secure the spindle in a fixed position, preventing its rotation. In operation, a hand tool is utilized to engage the control assembly. This configuration enables a user to capture and release the rotary tool bit using one hand.

Abstract: A tool holder attachment structure includes a spindle and a tool holder. The spindle has a tip end face and a tapered hole. The tool holder has a tapered shank portion and a flange end face. In a clamped state, there is a clearance of a predetermined size between the flange end face of the tool holder and the tip end face of the spindle. As the spindle is rotated, the tapered hole of the spindle is slightly expanded by a centrifugal force caused by rotation of the spindle, and the presence of this clearance allows the tapered shank portion to be further drawn into the tapered hole so that the flange end face of the tool holder closely contacts the tip end face of the spindle, and the tapered shank portion is closely fitted in the tapered hole, whereby two-face restraint is implemented.

Abstract: In a machine tool, a support member to which a headstock is mounted movably in an upward-downward direction is movable so as to change a position thereof in a horizontal direction relative to that of a bed. A guide member is provided on the bed and configured to guide the support member. An engageable portion at which the support member is supported by the guide member is located in the support member at a level within a range of upward-downward movement of the headstock along the support member.

Abstract: An ID tag (27) is attached to a bottom surface (31) of a hollow portion (17) of a tool holder (11) having a hollow taper shank. Concretely, a circular recess (33) is formed on bottom surface (31) of hollow portion (17), and ID tag (27) is attached in recess (33) by means of adhesive or the like. The center of circular recess (33) coincides with a rotation axis of tool holder (11).

Abstract: A cutting tool assembly having a tool holder and a cutting tool. The cutting tool has a shank that is matingly received within an axial bore in the lower end of the tool holder. The shank includes an eccentrically-shaped driver portion. The tool holder's axial bore includes an enlarged eccentrically-shaped drive opening which is complementary in shape to, but slightly larger than, the driver portion. When the shank is inserted into the axial bore, the driver portion and drive opening are aligned allowing the cutting tool to be partially rotated relative to the tool holder. This partial rotation abuts a portion of the eccentric driver portion against the drive opening wall to provide rigid support of the cutting tool against further rotation as the tool assembly cuts. A cammed fastener releasably interlocks the partially rotated cutting tool within the tool holder.

Abstract: A spherical cutter includes a spherically shaped body having open and closed ends defining a central cavity, multipoint cutting edges disposed along a circular rim at the open end, and the spherically shaped body generally defined by a radius and an origin. The cutting edges may be provided on cutting inserts removably attached to support teeth circumferentially disposed along the rim. The spherical cutter may be mounted to a rotatable spindle of a multi-axis computer numerically controlled machine with the radius and the origin located along a rotational axis of the spindle. The machine may be used for machining a cylindrical blank to form a plurality of circumferentially spaced apart integral rotor blades extending radially outwardly from a hub by machining each of the slots along a spherical surface defined by the radius and the origin.

Abstract: A cutter holder has a holder body and a sleeve. The holder body has a first end, a middle, an insert part and a mounting part. The insert part is formed on the first end. The mounting part is formed on the middle of the holder body and has an outer thread formed around the mounting part. The sleeve is mounted around the mounting part and has an inner thread, multiple screw holes and multiple setscrews. The inner thread is formed on an inner surface of the sleeve, is screwed with the outer thread of the mounting part. The screw holes are separately defined through the sleeve. The setscrews are mounted in the screw holes and abut the mounting part.

Abstract: A tool clamping device for a machine tool has a tool spindle with a first clamping unit, which is coupled to a drive unit. A conventional tool can be clamped and rotatably driven about a rotational axis by means of a first clamping unit. To clamp a heavy tool, a plurality of second clamping units are additionally arranged by means of a housing on the base body of the tool clamping device and about the rotational axis. The heavy tool is clamped by the first clamping unit and the second clamping units and rotatably driven by means of the first clamping unit. For this purpose, the heavy tool has a corresponding first counter-clamping unit and corresponding second counter-clamping units. The tool head of the heavy tool coupled to the first counter-clamping unit and can be rotatably driven by means of the latter.

Abstract: A method and system for evaluating a performance of a semiconductor manufacturing tool while manufacturing microelectronic devices are disclosed. At least one report is generated based on executions of at least one statistical test. The report includes at least one heat map having rows that correspond to sensors, columns that correspond to trace data obtained during recipe steps, and cells at the intersection of the rows and the columns. At least one sensor in the tool obtains trace data of a recipe step while manufacturing at least one microelectronic device. A computing device analyzes the obtained trace data to determine a level of operational significance found in the data and assigns a score to the trace data that indicates a level of operational significance. Then, the computing device places the score in a corresponding cell of the heat map. A user uses the cell for evaluating the tool performance.

Abstract: This invention disclosed a power tool comprising housing, motor in the housing, switch fixed on the housing used to connect motor and power, output shaft connecting with operator and rotating in single direction in company with the motor driving, and locking device contained in the housing. Power tool has self-locking mechanism which can lock the output shaft no need additional tools or holding force. The locking act can be easier and safer.

Abstract: An adaptive device for use as a tool holder for manual and computer numerical controlled lathes is provided to retain and use tools of various sizes, including those intended for use on CNC lathes and on mills. The device includes a sleeve, which includes an inner-tapered surface, a neck and an opening, and a threaded member sized to fit through the neck in the opening. The adaptive device may further include one or more shoulders and/or grooves on the exterior of the sleeve, and/or a retaining member fitted to the threaded section, and may include an embodiment where the sleeve is integrated into a tool holder and/or where the threaded member is constructed to permit fluid flow into the tool holder.

Abstract: The invention refers to a working machine with a machining tool which can be set in a spindle head of a working spindle. A monitoring unit is provided which monitors the shape of the spindle head.

Abstract: A tool-holding system for centering a cutting tool to be utilized by a machine is disclosed herein. The tool-holding system includes a housing defining a tapered recess to be provided to the machine for receiving at least a portion of the tool, a first alignment portion provided to the housing, and an adaptor including a tapered shank that is to be received within the tapered recess defined by the housing. The adaptor includes an aperture formed in the adaptor for receiving a proximate end of the tool and a tool fastener for securing the proximate end of the tool within the aperture at a predetermined angular orientation therein. A second alignment portion is provided to the adaptor to cooperate with the first alignment portion to establish a predetermined angular orientation of the adaptor relative to the housing while the shank of the adaptor is at least partially inserted into the tapered recess. A fastener is also provided for securing the adaptor within the tapered recess of the housing.

Abstract: The invention relates to a tool coupling for connecting a tool carrier which can be driven in a rotating manner, in particular a milling tool with a machine spindle or an adapter connected to a spindle, wherein four drivers in a crosswise formation are provided for transmitting torque between the said parts and in the clamping state engage in four recesses. To allow the tool coupling to be easily operated and to be of a simple construction, and also to counteract undesired jamming, it is proposed that the drivers respectively have on the side transmitting the torque a planar face which lies with full surface-area contact against a wall of a groove-shaped recess in the clamping state, that on the opposite side the driver has a smaller positively or frictionally engaging contact with the wall there of the groove-shaped recess and that a quick-acting clamping device is providing for the axial clamping of the tool carrier and the spindle or an adapter.

Abstract: The invention relates to a machine tool comprising a motor-driven machine spindle which can be rotated about a spindle axis. The machine spindle comprises a tool holder arranged at the face. A tool is exchangeably arranged on the machine spindle. The tool has a coupling element which is compatible with the tool holder of the machine spindle. The coupling element has a rear surface pointing toward the machine spindle. The tool holder comprises a face arranged opposite of the rear surface of the coupling element. The machine tool comprises at least one galvanic contact point for the electric current or data transmission, said point being arranged between the machine spindle and the tool and rotating together with the machine spindle. The galvanic contact point has a contact element which is arranged at the face of the tool holder on the spindle side, and a contact element which is arranged on the rear surface of the coupling element on the tool side.

Abstract: A machine tool for machining work pieces. It has a machining tool. This is held in a tool mount. For that a tool clamping device is provided. An electric motor serves for generating the clamping power, or at least one means driven by the electric motor acts on a spring arrangement for effecting the release of the machining tool from the tool clamping device.

Abstract: The invention relates to a method for generating a thread by a numerically-controlled tool machine (or: machine tool) using a thread generation tool, the thread generation tool being rotated by a tool spindle and simultaneously advanced according to the thread pitch in the axial direction, in order to generate a thread in a borehole of a workpiece. In order to increase the working velocity of the thread generation, the invention provides that the rotational velocity (?1) of the thread generation tool is geared up using a transmission gearing, which is situated so it is active between tool spindle and thread generation tool, in relation to the rotational velocity (?2) of the tool spindle. Furthermore, the invention relates to a numerically-controlled machine tool.

Abstract: A clamping unit for releasably holding a tubular toolholder shank has a base member with a canister sleeve mounted therein. To secure the canister sleeve within the base member and to minimize movement caused by tolerances, retention bolts are threadably mated within the base member to engage a slot within the canister, wherein the relationship between the retention bolt and the slot is such that the retention bolt is intentionally misaligned, so that when engaged with the canister slot, the retention blot resiliently deflects and provides both an axial force and a lateral force upon a canister sleeve.

Abstract: A spindle apparatus for receiving and driving a tool holder, comprises a drive, a shaft coupled to the drive with a forward end of the shaft having a receptor for affixation of a tool holder, and a clamping device supported at the forward end of the shaft for integral driven rotation therewith. The clamping device has a clamping element disposed within the receptor and selectively actuable between an active position for retaining the tool holder and an inactive position for inserting and releasing the tool holder. An actuator is operatively connected with the clamping device for controlling movement of the clamping element between the active and inactive positions. The actuator is disposed adjacent the forward end of the shaft in surrounding relation thereto, which facilitates a particularly compact, efficient and reliable design.

Abstract: A tool holder, in particular for a measuring sensor, with an interface to a spindle of a machine tool is proposed. The tool holder comprises, as seen from the interface for the spindle, a material portion which differs from the customary basic material of a tool holder in a lower coefficient of linear expansion ? and/or in a lower heat conductivity ?. According to the invention, the material portion affords thermal decoupling between the tool-side portion of the tool holder and a tool received therein from the tool spindle for reducing a length change on account of an introduction of heat coming from a comparatively hot tool spindle.

Abstract: Tool head (110) for use in a multiaxis machine (100), the tool head (110) comprising a spindle body, which has two elements (101, 102). These elements (101, 102) are rotatably connected with one another via a corresponding coupling (103), the first element (101) having a first longitudinal axis (WA1) and the second element (102) having a second longitudinal axis (WA2), which are transferable from a stretched position into an angled position depending on the rotational position. A first drive (A1) is seated in or on the spindle body. A receptacle device (120) is provided, which is situated on the second element (102). This receptacle device (120) is used for fastening a motor spindle (20), a motor (M1), which is integrated in the motor spindle (20), being able to be supplied with power via the second element (102) and via electrical connection means of the receptacle device (120). The receptacle device (120) is also used for fastening a milling tool (30), which is drivable using the first drive (A1).

Abstract: A machine tool spindle structure capable of monitoring a working state in real time includes a spindle body, a rotating mandrel, a cutter base, and an internal inspecting device. The cutter base is combined with the rotating mandrel and rotates with the rotating mandrel. The rotating mandrel has a chamber, and the internal inspecting device is disposed in the chamber. Inspecting chips in the internal inspecting device are directly disposed on the cutter base, so as to measure working parameters during a processing process. The working parameters are transmitted to an external information device by a wireless transmission module in the internal inspecting device, thereby accurately giving a feedback of the working state of a processing cutter in real time.

Abstract: A bit retaining system for a rotary tool or device such as a router is disclosed. The bit retaining system may include a collet assembly and a control assembly. The collet assembly may include a spindle, a collet adapted to receive the bit, and a collet nut. The collet assembly may further include a collet gear mounted on the collet nut and/or a spindle gear mounted on the spindle. The control assembly selectively engages the collet assembly to drive the collet nut and/or secure the spindle in a fixed position, preventing its rotation. In operation, a hand tool is utilized to engage the control assembly. This configuration enables a user to capture and release the rotary tool bit using one hand.

Abstract: A system is disclosed to use a rotary milling head to break or cut the bond of a heat transfer fin base to a boiler tube, thereby removing the heat transfer fins from the boiler tube to facilitate the more efficient repair of the boiler tube.

Abstract: An end mill including a shank having one end gripped by a chuck which is rotatable about a predetermined rotation axis, and a blade body attached to the other end of the shank and rotatable together with the shank. The blade body has a shape in which the area of a cross section in a plane perpendicular to the rotation axis decreases as the distance from the shank increases, and includes a linear cutting edge parallel to, and at a certain distance from, the rotation axis. An end cutting edge adjoining the cutting edge in the longitudinal direction thereof may be provided. The blade body includes, for example, a rake-face-side surface including a rake face and adjoining the flank-side surface in two portions, and a linear cutting edge formed at one of the positions at which the flank-side surface and the rake-face-side surface come in contact with each other.

Abstract: An improved quick change power tool chuck is provided which is principally used on a wood working router but could also be used in many other power tool applications. Key features of the quick change chuck include the unique way that it secures the cutting bit from unwanted slippage, the large mechanical advantage thereof and the speed in which a cutting bit can be removed and replaced. The chuck can be aligned and attached to the power tool in the same manner that a standard collet is aligned and attached to the router spindle or to a router or other drive shaft in a number of different ways.

Abstract: A machine reaming tool includes a reaming head or interchangeable head (1) and a shaft (2), wherein the interchangeable head (1) is of one piece and may be exchanged, and in an axial direction and at each location, thus including means for the exchange adaptation, is thinner than a maximal thickness hmax, wherein this maximal thickness hmax is computed in millimeters from a diameter D1 of the interchangeable head in millimeters as hmax=6 mm+(1/10)·(D1?12 mm). On account of this, a guide portion (18) for cutters of the reaming head (1) becomes very much shorter than usual, but despite this ensures an adequate quality of machining. In a preferred embodiment of the invention, the interchangeable head (1) in a plane shaft-side end-face (15) comprises cutout (11) for the centering fastening on the shaft (2).

Abstract: A rotor, used particularly in a rotating tool for machining workpieces, includes a rotor base body with locations, which are formed on the periphery thereof in an interspaced manner and which are suited for fitting the rotor with functional elements. The rotor base body includes a first, radially outer base body element and a second, radially inner base body element. When the rotor is not rotating, a jointing pressure prevails along an encircling joining line, which is formed between both base body elements. The second, radially inner base body element has a higher modulus of elasticity than that of the first, radially outer base body element.

Abstract: A machine tool includes a driver, a tool holder, and a locking device in the form of, for example, an alignment collar. In use, the machine tool carries a tool, such as a surface refinishing bit, which may be lowered into a workpiece bore, such as a cylinder head valve seat, and subsequently rotated by a machine spindle for resurfacing the bore. The machine tool receives a pilot shaft placed in a reference bore associated with the workpiece bore. The pilot shaft functions to ensure general alignment of the machine tool cutting axis and the refinishing surface.

Abstract: In the case of a tool clamping device, in particular, for an operating spindle of a processing machine, with an activation element (3) that can be moved by a drive between a first position, in which the tool clamping device is located in a clamped position, and a second position, in which the tool clamping device is located in a released position, a sensor is present in the form of at least one electrical component for detecting a position of the activation element (3). The sensor is integrated structurally into the tool clamping device and at least one section of the activation element (3) directly forms a component of the one or more electrical components, wherein its position influences an electrical property of this component. The component can be an electrical switch whose closed state depends on the position of the activation element (3) in that at least one section of the activation element (3) is electrically conductive and forms a contact electrode of the switch or a part of such an electrode.

Abstract: A method and apparatus for a cutting tool system. In one advantageous embodiment, an apparatus may comprise a carriage that is movable along an axis, a cutting tool, and a depth controller. The cutting tool may be capable of being removably attached to the carriage. The depth controller may be capable of controlling a cutting depth of the cutting tool with respect to a surface of a workpiece closest to a part.

Abstract: A tool, attachable to a spindle of a machine tool and capable of changing independently a rotational speed of a cutting tool from that of the spindle, provided with a cutting tool for machining a workpiece, an electric motor for driving the machining tool, a generator for generating electric power to drive the electric motor by the rotation of the spindle, a tool holding part for rotatably holding the cutting tool, a casing for holding the electric motor, the generator, the tool attachment part, and the tool holding part, and a locking part for preventing rotation of the casing by engagement with a non-rotating part of the machine tool. A tool includes an AC generator, an AC motor and a case holding the generator and motor such that the generator and the motor are arranged in the case along a center axis and a longitudinal direction of a rotatable portion of the generator.