Abstract: A ramp is configured to allow a vehicular machine to move from a ground surface to an elevated surface of a transport vehicle. The ramp has a length along a longitudinal direction and includes a first portion, a first web, and a second portion. The first portion includes a first rail and a second rail, each of the first and second rails being oriented substantially parallel to the longitudinal direction. The first web is positioned on the first portion and includes a first array of raised members arranged so that a first plurality of longitudinal travel paths are defined on the first web between at least some of the raised members of the first array. The second portion is connected to the second rail at a first hinge. The second portion includes a third rail and a fourth rail.

Abstract: The invention relates to a method for monitoring the temperature of the sleeve part of a tool holder, which sleeve part is inserted into the induction coil of a contraction device, wherein the instantaneous inductance of the induction coil is measured during the inductive heating and the current supply to the induction coil is influenced if the instantaneous inductance approaches, reaches, or exceeds a specified value.

Abstract: A shim for use with a wear member comprises a body that defines a first aperture that includes a closed end and an open end, wherein the first aperture is defined by at least three surfaces including two side surfaces and at least one surface that defines the closed end and that further defines a surface normal that points toward the open end, and a second aperture that includes a closed end and an open end, wherein the second aperture is defined by at least three surfaces including two side surfaces and at least one surface that defines the closed end and that further defines a surface normal that points toward the open end. The surface normal of the first aperture forms an angle with the surface normal of the second aperture that is greater than zero degrees.

Abstract: Surgical devices and methods are provided for anchoring tissue to bone, and more particularly methods and devices are provided for preventing over-insertion of an expander into a sheath of a two-piece anchor. For example, a tendon anchoring system is provided with an anchor assembly and an inserter tool. The anchor assembly includes a sheath with a threaded lumen and a threaded expander screw configured to be threadably disposed within the sheath to cause the sheath to expand outward. The inserter tool includes an elongate outer shaft with a distal end configured to couple to a proximal end of the sheath, and an elongate inner shaft with a distal drive tip configured to engage a proximal end of the expander screw.

Abstract: An impact spinning hand tool includes a hollow body, a first lever and a first elastic member. The hollow body includes a first position-limiting structure. The first lever includes a driving end exposed outside the hollow body, a spinning structure and a forcing end contained in the hollow body. The forcing end has a second position-limiting structure that is detachably limited by the first position-limiting structure. The first elastic member is pushed against the forcing end and the first position-limiting structure through two ends thereof. The first lever is located at a first position and presses the first elastic member to store an elastic restoring force when being connected with the hollow body. When the second position-limiting structure is released, the elastic restoring force drives the first lever to move to a second position so as to allow the spinning structure to perform an impact spinning action.

Abstract: A shim for use with a wear member comprises a body that defines a first aperture that includes a closed end and an open end, wherein the first aperture is defined by at least three surfaces including two side surfaces and at least one surface that defines the closed end and that further defines a surface normal that points toward the open end, and a second aperture that includes a closed end and an open end, wherein the second aperture is defined by at least three surfaces including two side surfaces and at least one surface that defines the closed end and that further defines a surface normal that points toward the open end. The surface normal of the first aperture forms an angle with the surface normal of the second aperture that is greater than zero degrees.

Abstract: A reverse spot-facing tool for cutting a reverse spot-face in a workpiece using a reverse spot-facing cutter configured to engage a pilot shaft having a first end and a second end is disclosed. The workpiece comprises a through hole having a central axis. The reverse spot-facing tool comprises a stop configured to be located between the first end and the second end of the pilot shaft; a biasing assembly that generates a first thrust force and an equal and opposite second thrust force when the reverse spot-facing cutter is cutting the reverse spot face; and a thrust bearing configured to be positioned between the biasing assembly and the stop. When the reverse spot-facing cutter is cutting the reverse spot-face, the thrust bearing transmits the second thrust force from the biasing assembly to the stop, and the biasing assembly transmits the first thrust force to the workpiece.

Abstract: Disclosed is a mounting device (6) including a receiving opening (8) with a circular inner locating surface (10) which is coaxial with the axis of rotation (3) and serves for engagement with radially outer vertices (24) of the polygon profile of a holding pin (23). Arranged adjacent to the inner locating surface is a positioning disk (14) which has an opening (15) coaxial with the axis of rotation (3) and of such polygonal shape and size that the polygon profile of the holding pin (23) engaging in the opening (15) is supported in the opening (15) in a manner preventing relative rotation.

Abstract: A collet for holding a lens includes a shank and at least two gripping jaws separated from one another by radial slots, wherein a shape of an upper edge region of the gripping jaws is designed as a radial continuation of a region to be processed of the lens that is to be held by the collet.

Abstract: The hardness tester includes a plurality of weights; a transmission mechanism transmitting to an indenter a force of gravity acting on the weights; and a test force switching mechanism switching between magnitudes of a test force. The weights include hollow portions running through the weights in a vertical direction; and accommodation portions formed so as to be capable of accommodating the weight directly below. Outside tapered portions are provided to an exterior surface of the weights and inside tapered portions are provided to an interior surface of the accommodation portions. The transmission mechanism includes a shaft member and a weight engagement portion capable of being accommodated by the bottom-most accommodation portion to engage a weight. The weight engagement portion includes a tapered portion engaging the weight to regulate horizontal-direction displacement. A predetermined gap is reserved between the hollow portions and the shaft member.

Abstract: A lid opener is provided. The lid opener includes a solid body piece having a first end, the solid body piece being adapted to flex. The solid body piece can further include an annulus defined in the first end, with the annulus defining a gradually diminishing diameter from the first end. The annulus is configured to be inserted over and functionally engage a lid of a container to facilitate the removal of the lid from the container.

Abstract: A capping head for screwing screw caps onto containers includes a center axis and a capping cone having a cavity that holds a screw cap. The capping head has a toothed profile, whose teeth essentially point in the direction of center axis. The cavity has an opening. A root diameter of the toothed profile lies on a first imaginary annular surface. A tip diameter of the toothed profile lies on a secondary imaginary annular surface. The first and second annular surfaces are arranged concentric to the center axis. The second annular surface and the center axis enclose a first angle, while the diameter of capping cone increases in the direction of opening. The first annular surface and the second annular surface enclose a second angle that is greater than 0°.

Abstract: A shrink-fit chuck having a receiving body, a receiving opening for a tool shank, arranged in the receiving body, an accumulation and collection chamber arranged in the front region of the receiving opening and at least one coolant supply channel leading to the accumulation and collection chamber. The accumulation and collection chamber is delimited to the front by a ring bar arranged at the front end of the receiving opening. The internal diameter of the ring bar is adjusted to the internal diameter of the receiving opening in such a manner that as small an annular gap as possible exists between the ring bar and the tool shank. A plurality of outlet openings are provided in the ring bar for discharging to the outside a coolant routed via the coolant supply channel into the accumulation and collection chamber.

Abstract: The invention relates to an adjusting device for axially supporting a shank tool in a shrink-fit chuck tool holder, comprising a leveling section on the side facing the shank tool to level out or at least reduce any changes in position and/or orientation of the shank tool which are due to shrinkage.

Abstract: The invention relates to a tool holder (1) for clamping tools by shrink fit. The tool holder, due to its specific shaping in the area of the shrink-fit head (6) and the shrink-fit base (5) of the tool holder, is less prone to oscillate than known tool holders, therefore allowing inter alia higher speeds so that the cutting capacity, determined by the speed of the tool, the tool feed and the cutting depth of the tool, can be increased and the machine running times required to produce a workpiece can be reduced. The tool holder (1) of the present invention allows to produce and machine workpieces in a substantially more efficient and economical manner.

Abstract: A tool holder has a chuck portion with a retaining bore in which a cutting tool can be inserted. The tool has flat surfaces extending from its end, and circumferential groove at rear ends of the flat surfaces. When the tool is inserted into the retaining bore, first protrusions of the tool holder pass through spaces between the flat surfaces and the inner wall of the retaining bore and fitted in the groove. When the tool is turned, the protrusions move in and engage the side edges of the groove, thus preventing the tool from pulling out of the chuck portion. When the first protrusions are fitted in the groove, second protrusions of the tool holder are located on the flat surfaces. When the tool is turned, the second protrusions are received in ends of the respective spaces, thereby preventing rotation of the tool relative to the chuck portion.

Abstract: A positioning apparatus for positioning an object in respective axis directions of an X-axis, a Y-axis perpendicular to the X-axis, and a Z-axis orthogonal to the X-axis and the Y-axis and positioning the object around the Z-axis within a plane parallel to the X-axis and the Y-axis is provided. A fastener detachably fastens the retainer. A gap is formed between a first reference surface of the retainer and the second reference surface of the fastener when a fixing shaft of the retainer is inserted into a fixing hole of the fastener, an outer surface of a pyramid part of the fixing shaft fits to an inner surface of the fixing hole and the object is positioned in the X-axis direction and the Y-axis direction.

Abstract: A shrink-fit tool (21) includes a tool and a toolholder, one of the tool (23) and the toolholder (25) having a male shank portion (27) and the other one of the tool (23) and the toolholder (25) having a body portion (29) including female opening (31) for receiving the shank portion (27), the female opening (31) being adapted to change in size upon heating the body portion (29) to receive the shank portion (27) and upon cooling of the body portion (29) to clamp the shank portion (27) by an interference fit. The shrink-fit tool (21) also includes a mechanical retention member (33) disposed between the shank portion (27) and the body portion (29) for mechanically retaining the shank portion (27) in the female opening (31) so that the shank portion (27) is in its only predetermined orientation relative to the body portion (29).

Abstract: A bit holder assembly for a rotary hand or powered tool, includes a body having a hex shank at its rearward end and a retraction collar slidably disposed on the body. The body has a coaxial hex socket formed therein to allow a tool bit to be inserted thereinto. A coil spring biases the retraction collar forwardly and biases a retaining clip toward the bottom of an angular slot formed in the body. The bit is removed by sliding the retraction collar rearwardly, to compress the coil spring and allow the retaining clip to retract back up the slot. A ring magnet is disposed at the forward end of the retraction collar to magnetize a fastener to retain the fastener to the bit.

Abstract: A tool holder (10) for a tool which can rotate about an axis of rotation (D) comprises a clamping shank (18) which, in an end shank region, has a clamping formation (14) with an accommodating opening (16) which is central in relation to the axis of rotation (D) and is intended for accommodating a retaining shank of the tool, there being provided, on the lateral circumference of the accommodating opening (16), at least one clamping surface for securing the retaining shank of the tool with press-fit action. According to the invention, on an axial section which forms an axial bracing section (VA), the tool holder (10) has a bracing arrangement (20) which, at least during operation of the tool holder (10), subjects the tool holder (10) to a bracing force (Vk) with a bracing force component (Vk) acting in the axial direction.

Abstract: A dressing roll mounting device for mounting a dressing roll to a dresser shaft of a grinding wheel dressing unit is provided. The dressing roll mounting device includes a mounting sleeve to be positioned at a free end of the dresser shaft, the outer face of the mounting sleeve being provided with a conical mounting region serving as a centering and pushing-on aid during mounting of the dressing roll to the dresser shaft. The maximum outside diameter of the conical mounting region is smaller than or corresponding to a dressing roll reception diameter of the dresser shaft.

Abstract: A shrink-fit chuck tool holder which comprises: clamping means which are provided centrally with respect to an axis of rotation of the tool holder for holding a shank of a rotary tool, and which define a receiving opening for the shank. The clamping means can be displaced in the radial direction between a release position for insertion or removal of the shank and a clamping position. The clamping means are assigned a clamping surface with a cylindrical contour which, in the clamping position, bears against the outer circumferential surface of the shank. The clamping surface has a helical groove surrounding the axis of rotation or a multiplicity of annular grooves surrounding the axis of rotation, which as seen in the direction of the axis of rotation project towards the axis of rotation and the roof surfaces of which form the clamping surface.

Abstract: The present invention relates to a low-vibration tool holder (1) with a tool holder base body (2, 3, 4, 6) and a tensioning arrangement (5) which provides axial tensioning of the tool holder base body (2, 3, 4, 6) and which is simultaneously tensioned in a radially flexible way with respect to the tool holder base body (2, 3, 4, 6). This tool holder (1) is less susceptible to vibration than previously known tool holders, which ensures better true running even during operation and in particular when heat-induced expansion of materials occurs, since the clamping arrangement (5) which is integrated in the tool holder (1) is continuously centered with respect to the tool holder base body (2, 3, 4, 6). Furthermore, such a tool holder (1), in particular within a modular design, can be adapted very flexibly to different types of tools and workpiece machining processes.

Abstract: A method for making by assembling a tool to and in a tool holder, and the tool and tool holder, and the assembled tool and tool holder. The tool is shrink-fitted into a cylindrical bore of the tool holder, and a shoulder of the tool abuts an abutment face of the tool holder. A structure, such as press, a screw, a draw bolt, or a cylinder, for example, is provided to apply an axial force to the cutting tool to force the tool shoulder against the abutment face of the tool holder.

Abstract: The invention relates to a clamping device for clamping workpiece, which comprises a base in which a center holding fixture for the shank of a tool to be clamped and an annular damping cavity surrounding the fixture or a plurality of damping cavities arranged around the fixture and set off from each other are configured. Every damping cavity is open towards the front face of the chuck base facing the workpiece. The clamping device is characterized in that the open end of every damping cavity is at least partially closed by respective covers which are inserted into the respective damping cavity from the open front face and are fixed inside the damping cavity.

Abstract: A method for making by assembling a tool to and in a tool holder, and the tool and tool holder, and the assembled tool and tool holder. The tool is shrink-fitted into a cylindrical bore of the tool holder, and a shoulder of the tool abuts an abutment face of the tool holder. Structure, such as press, a screw, a draw bolt, or a cylinder, for example, is provided to apply an axial force to the cutting tool to force the tool shoulder against the abutment face of the tool holder.

Abstract: A shrink-fit tool (21) includes a tool and a toolholder, one of the tool (23) and the toolholder (25) having a male shank portion (27) and the other one of the tool (23) and the toolholder (25) having a body portion (29) including female opening (31) for receiving the shank portion (27), the female opening (31) being adapted to change in size upon heating the body portion (29) to receive the shank portion (27) and upon cooling of the body portion (29) to clamp the shank portion (27) by an interference fit. The shrink-fit tool (21) also includes a mechanical retention member (33) disposed between the shank portion (27) and the body portion (29) for mechanically retaining the shank portion (27) in the female opening (31) so that the shank portion (27) is in its only predetermined orientation relative to the body portion (29).

Abstract: Embodiments of a drive shaft collet adapted for linking a surgical drive shaft to a surgical instrument so that the instrument may be driven by the drive shaft are disclosed. The collet includes a helically-swept cutout which forces a received shaft to be rotated into alignment during insertion. Collectively, the drive shaft collet and shaft are designed to avoid the need for multiple attempts at inserting the shaft into the collet in order to align the flats on the shaft with the flats on the collet.

Abstract: The invention proposes a tool holder (1), in particular of the shrink-fit chuck type, the receiving section (5) of which comprises clamping means (9) which are provided centrally with respect to an axis of rotation (7) of the tool holder (1) for holding a shank (15) of a rotary tool, and which define a receiving opening (13) for the shank (15). The clamping means (9) can be displaced in the radial direction between a radially widened release position for insertion or removal of the shank (15) and a clamping position, in which the clamping means (9) exert radial press-fit forces, which hold the shank (15) in a frictional lock on its cylindrical outer circumferential surface (19), on the shank (15). The clamping means (9) are assigned a clamping surface (17) with a cylindrical contour which, in the clamping position, bears against the outer circumferential surface (19) of the shank (15) with surface-to-surface contact.

Abstract: A medical instrument has an instrument insert (4) and an instrument handle (2) which are detachably connected to one another via a locking connection. A grip (24; 57) and a closure (26; 50) are provided for securing the locking connection. The closure (26; 50) may be moved into an unsecured position by movement of the grip (24; 57) as well as independently of a movement of the grip (24; 57).

Abstract: A bi-directional quick change tool-less lever and wedge actuated collet chuck, a system and/or a method provide symmetrical tool bit shank holding pressure before, during and after operation of a rotary-style power tool. The collet chuck is attached to and/or is integrated with high speed, variable speed and/or low speed rotary-style power tools, such as, for example, electrically driven rotary-style power tools and/or pneumatically-driven rotary-style power tools. The collet chuck provides tool-less automatic and/or tool-less manual tightening of the collet around a shank of an accessory for the rotary-style power tool. The collet chuck, the system and/or the method provide tool-less manual loosening of the collet for accessory replacement.

Abstract: A device for clamping and unclamping of tools comprising a tool shaft, by which device a sleeve section (2) of a tool holder (1) comprising a centric receiver opening (4) for a shaft (5) of a rotation tool is inductively heated, which sleeve section retains the shaft (5) of the tool seated in the receiver opening (4) in a press fit, and releases it upon heat up, which device comprises an induction coil assembly with at least one induction coil (6), which can be fed by an electric current for heating the sleeve section (2), and which comprises a concentrator body (11), which is magnetically conductive and electrically nonconductive or substantially electrically nonconductive, which concentrates the magnetic flux of the induction coil (6) onto the portion of the tool side end of the sleeve section (2), wherein the concentrator body (11) supports an induction attachment (14) made of electrically conductive material.

Abstract: To compensate for tolerances and diameter differences during the chucking of a tool shank (15) in a tool holder (1) of the shrink-fit chuck type, a diameter-compensating bush (17) is provided. The diameter-compensating bush (17) has an outer sleeve (19) having a tapered inner circumferential surface (25) and an inner sleeve (21) arranged coaxially therein and having a tapered outer circumferential surface (27). Once the diameter-compensating bush (17) has been put onto the tool shank (15) and the inner sleeve (21) has been drawn into the outer sleeve (19), for example by means of a ring nut (35), for the diameter compensation, the outer sleeve (19) is thermally shrunk in place in the locating section (9) of the tool holder (1). In this way, rotary tools whose tool shank (15) does not have a diameter corresponding to the diameter or the tolerance requirements of the tool holder (1) can be chucked in a tool holder (1), for example, of the shrink-fit chuck type.

Abstract: A method for positioning a tool (24) on a tool chuck (20) employs a tool holding device (22, 50, 58), which includes a tool-accommodating area (32, 52, 66) for at least partly receiving the tool (24), a connecting area (26, 54 62) to be arranged on the tool chuck (20), and a positioning opening (48) through which a positioner (18) can be placed against the tool (24), which is located at least in part in the tool-accommodating area (32, 52, 66). The tool (24) is optically scanned to obtain a measurement. Subsequently, the tool holding device (22, 50, 58) is removed from the chuck (20), and the chuck is heated. Then, the tool (24), which is separated from the tool holding device (22, 50, 58), is shrink fitted in the chuck (20) at a position that is based on the measurement.

Abstract: A thermal expansion knife adapter has a body, a conical shaft connecting sleeve and a conical knife connecting sleeve. The body has a first side and a second side. The conical shaft connecting sleeve is formed on and extends from the first side of the body and has a shaft holding hole defined in the shaft connecting sleeve at an end opposite to the body. The conical knife connecting sleeve is formed on and extends from the second side of the body and has a knife holding hole defined in the knife connecting sleeve at an end opposite to the body and communicating with the shaft holding hole in the shaft connecting sleeve. The knife connecting sleeve is a separate element securely and integrally combined with the body. The material for forming the body and the shaft connecting sleeve is different from that for forming the knife connecting sleeve.

Abstract: A machine tool bit holder providing a stable connection between a machine and a tool bit being used to perform machining operations on a work piece. The holder for the tool bit is of simple construction and has a large contact area relative to a tool bit size and a holder size between the holder and the tool bit, and the holder is configured so that the tool bit can be easily mounted into and dismounted from the holder. The holder allows different shapes or configurations of tool bits, such as an angle between the holder and the tool bit, and tool bits that are substantially rectangular as well as substantially round in cross-section.

Abstract: A tool connector includes a outer sleeve having a noncircular bore, and a tool shank slidably engaged in the bore of the outer sleeve and having two end portions slidably engaged in the bore at two end portions of the outer sleeve and extendible out of the end portions of the outer sleeve for engaging with different tool elements or for driving different tool elements. One of the end portions of the tool shank may be engaged into the bore of the outer sleeve when the other end portion of the tool shank is extended out of the outer sleeve for allowing a tool member to be engaged with the bore of the outer sleeve and for allowing different tool elements to be driven by the tool connector.

Abstract: The invention relates to a tool holder (1) for clamping tools by shrink fit. Said tool holder, due to its specific shaping in the area of the shrink-fit head (6) and the shrink-fit base (5) of the tool holder, is less prone to oscillate than known tool holders, therefore allowing inter alia higher speeds so that the cutting capacity, determined by the speed of the tool, the tool feed and the cutting depth of the tool, can be increased and the machine running times required to produce a workpiece can be reduced. The tool holder (1) of the present invention allows to produce and machine workpieces in a substantially more efficient and economical manner.

Abstract: A capping device fits caps onto containers by applying an axial force to the caps as they are threaded onto the containers. The capping device utilizes a spindle rotatable about an operational axis for imparting rotation to a capper unit. A connector coupled to the capper unit is releasably coupled to the spindle by a quick release mechanism. The quick release mechanism is normally biased in the locked position and is configured to automatically move from the unlocked position back to the locked position when the connector mates with the spindle as a user re-connects the capping unit back to the spindle. Methods of releasing and re-connecting the capping unit to the spindle are also disclosed.

Abstract: The invention relates to a tool holder (10) for shrink-fit attachment of rotating tools (11) with predominantly cylindrical shafts (12), having a chuck (13) with a clamping section (14) containing a conical receiving bore (15) to accommodate an insert (30) that has a cylindrical bore (32) to accommodate the tool shaft (12) and has a conical outer surface (31 ) to be contained in the receiving bore (15) of the clamping section (14). The insert (30) is embodied so that after the axial insertion of the insert (30) into the hot chuck (13), a contact is produced between the insert (30) and the chuck (13) on the one hand and between the insert (30) and the inserted tool shaft (12) on the other hand and, when the chuck (13) cools, the tool shaft (12) is clamped, wherein it is possible to bridge over large diameter tolerances while achieving maximum clamping forces (FIG. 1).

Abstract: A shrinking arrangement for a tool holder is provided which retains a rotary tool with a press fit in a central accommodation opening. The arrangement includes an induction-heating arrangement for thermally expanding the tool holder in the region of the accommodating opening. The induction-heating arrangement includes an induction-coil unit which is guided on a vertical guide column such that it can be displaced with its coil axis vertical and which is connected, in particular via a flexible cable, to an induction-current generator which is fixed in relation to the column, and in that arranged on the induction-coil unit is a contact switch which can be actuated manually and by means of which the supply of induction current to the induction-coil unit can be switched on and off in a freely selectable manner at least for a limited period of time.

Abstract: A system for mounting a tool in a tool holder for high-precision centering of the tool and positive restraint of the tool from rotation within the holder. The tool holder includes a cylindrical aperture having a diameter slightly less than the diameter of the shank of a cylindrical tool. The tool is installed into the tool holder by heating the tool holder to a temperature sufficient to increase the aperture diameter sufficiently to accept the tool shank. The tool shank is further provided with an angular flat for engagement with a set screw to prevent the tool from being turned in the holder in use. Preferably, a second tool flat is provided opposite the first flat and extending to the end of the tool shank for orientation of the tool by a second set screw during insertion of the tool into the tool holder.

Abstract: A heat shrink tool holder for holding tools and machine parts in an axial bore comprises a sleeve between the bore of the holder and the tool shank or machine part. The sleeve is a reducing sleeve that transfers a holding action exerted by the holder in its cold state to the tool shank or part. The sleeve is made of a material with a low thermal conductivity, like ceramic, and may be interchangeable or firmly fixed to the holder.

Abstract: A chuck includes a holder body, a clamp sleeve, and a large number of needle rollers. The holder body has a shank portion, a flange, and a chuck sleeve. The clamp sleeve is fitted onto the outer circumference of the chuck sleeve such that the clamp sleeve is rotatable and axially movable relative to the chuck sleeve. The needle rollers are disposed between the chuck sleeve and the clamp sleeve over the entire circumference. The clamp sleeve is rotated to cause the needle rollers to revolve spirally along the outer circumferential surface of the chuck sleeve while rotating about their own axes in order to decrease and restore the diameter of the chuck sleeve. A thrust member is disposed between the end surface of the flange opposite the shank portion and a corresponding end surface of the clamp sleeve.

Abstract: The invention is concerned with a device for clamping and releasing work tools (16) in a tool receptacle (10). The tool receptacle (10) includes on its free end for this purpose an open socket part (12), which is adapted for frictional engaging reception of the work tool shaft (14). The work tool shaft is thereby shrunk-fit into a borehole (20) in the socket part (12). For this purpose the socket part is provided with an induction coil (26) encircling the tool receptacle (10) which coil can be acted upon by high frequency alternating current for producing heat and heating the socket part (12). For avoidance of leakage fields which could result in a undesired heating of the work tool (16), it is proposed in accordance with the invention that the induction coil (26), on its surface adjacent the free end of the socket part (12), is covered over by a pole shoe (34) having a central through hole (36) for the work tool (16) and comprised of a magnetically conductive and electrically non-conductive material.

Abstract: A coupling (10; 100; 200; 400) for use between the modules of a modular tool holder arm, in particular a machine tool, with a male coupling part (12; 112; 212; 412), forming the end of a first module and containing a central, axially symmetrical journal (14; 114; 214; 414), and a female coupling part (20; 120; 220; 320; 420), forming the end of a second module connected to the first module and containing a central, axially symmetrical seat (18; 118; 218; 318; 418). In the engaged state, the two coupling parts form a shaft-hub seat (14, 18; 114, 118; 214, 218; 414, 418) as a first transmission location and at least one other transmission location.

Abstract: A heat shrink tool holder for holding tools and machine parts in an axial bore comprises a sleeve between the bore of the holder and the tool shank or machine part. The sleeve is a reducing sleeve that transfers a holding action exerted by the holder in its cold state to the tool shank or part. The sleeve is made of a material with a low thermal conductivity, like ceramic, and may be interchangeable or firmly fixed to the holder.

Abstract: A toolholder and insert arrangement includes an insert having a cutting portion and a shank portion disposed at a base of the cutting portion. The toolholder has a first end attachable to a spindle and a second end having a shank-receiving opening. When the toolholder is at ordinary room temperature, the shank-receiving opening is smaller than the shank portion. Upon heating of the toolholder to a predetermined temperature above the ordinary room temperature and above an ordinary operating temperature, the shank-receiving opening expands to become at least as large as the shank portion. Upon cooling of the toolholder to a temperature below the predetermined temperature and after insertion of the shank portion in the shank-receiving opening, the shank-receiving opening shrinks to generally conform to a shape of the shank portion.

Abstract: A tool fastening mechanism has a housing 2, in which a clamping opening 3 is embodied for receiving a tapering tool shaft clamping end 4 of a tool part 5. The clamping opening 3 tapers inward in the introduction direction of the clamping end 4 of a tool part 5, and furthermore the tapering sides are inclined toward one another in a plane extending perpendicular to the introduction direction, as a result of which the opening has a trapezoidal cross section, and the length of this cross section decreases away from the orifice of the clamping opening 3. The housing 2 furthermore has a transverse opening 7, which intersects the clamping opening 3 and in which a locking pin 8 is received.

Abstract: The invention is concerned with a device for clamping and releasing work tools (16) in a tool receptacle (10). The tool receptacle (10) includes on its free end for this purpose an open socket part (12), which is adapted for frictional engaging reception of the work tool shaft (14). The work tool shaft is thereby shrunk-fit into a borehole (20) in the socket part (12). For this purpose the socket part is provided with an induction coil (26) encircling the tool receptacle (10) which coil can be acted upon by high frequency alternating current for producing heat and heating the socket part (12). For avoidance of leakage fields which could result in a undesired heating of the work tool (16), it is proposed in accordance with the invention that the induction coil (26), on its surface adjacent the free end of the socket part (12), is covered over by a pole shoe (34) having a central through hole (36) for the work tool (16) and comprised of a magnetically conductive and electrically non-conductive material.