Abstract: A minimum quantity lubrication (MQL) tool including a lance. The lance includes a passageway and an orifice. The passageway extends axially from a first end of the lance toward a second end of the lance and allows a lubricant supply to flow therein from the first end of the lance toward the second end of the lance. The first orifice extends radially through the lance at a location near the second end of the lance. The lubricant supply flowing through the passageway exits the orifice and is impinged upon by air flowing around the lance.

Abstract: A cutting tool includes a body having a base and a cutting portion. The cutting portion defines a plurality of first edges and a plurality of second edges. The body defines a trunk passage, a plurality of first branch passages, and a plurality of first independent passages. Each of the first branch passages is open to the trunk passage and has an outlet open to an exterior of the cutting portion proximate to a corresponding one of the second edges. Each of the first independent passages is independent of the trunk passage and the first branch passages and has an outlet open to an exterior of the cutting portion proximate to a corresponding one of the first edges.

Abstract: A coolant coupling device (20) includes: a cylinder chamber (25) provided for a support member (2) for a tool rest (4) in a machine tool and supplied with coolant; a piston (P) movably arranged in the cylinder chamber (25); and a coolant supply flow channel (30) provided for the piston (P) for passing coolant therethrough. The piston (P) is driven by the coolant supplied to the cylinder chamber (25) so that an outlet (32) of the coolant supply flow channel (30) is connected to a coolant inlet port (10) of the tool rest (4) to supply the coolant to the tool rest (4). The piston (P) comprises a cylindrical projection (29) protruding toward and into the cylinder chamber (25), and the coolant supply flow channel (30) has an inlet (34) that opens at an outer peripheral surface of the cylindrical projection (29).

Abstract: A coolant collet assembly has a collet body and a cutter. The collet body has an outer end, an inner end, an annular groove, multiple external slits, multiple internal slits, and multiple coolant channels. The external slits and the internal slits are in a staggered arrangement. Each coolant channel is defined longitudinally in the collet body around the cutter hole, is converged radially toward the outer end, and has an end communicating with a respective one of the internal slits and an opening formed in the outer end. The cutter is inserted in the cutter hole. The coolant may flow through the coolant channels of the collet body and is guided to the heating point of the working cutter with the converged coolant channels.

Abstract: Disclosed is a chemical mechanical polishing apparatus. The chemical mechanical polishing apparatus comprises a lower base, a platen configured to rotate and provided on a top surface of the lower base, a polishing pad on the platen; and at least one slurry supply device that is disposed adjacent to the polishing pad and supplies a slurry to the polishing pad. The slurry supply device comprises a capillary nozzle that is disposed over the polishing pad and includes a pin-type conductive tip therein, a slurry supply unit that supplies the slurry into the capillary nozzle, and a voltage supply unit that applies a voltage to the pin-type conductive tip.

Abstract: A milling machine including a frame (2) having a work surface (2.1) disposed in a vertical plane and a C-shaped moving bridge (3). In addition, the machine includes: at least three heads (7), each head including a machining spindle (15); and five movement axes (X, Y, Z, A, B), such that the moving bridge (3) is moved by the frame (2) along a horizontal axis (X). Each head (7) is moved independently on the moving bridge (3) along a vertical axis (Y) in order to be moved towards or away from the work surface (2.1) along a depth axis (Z) perpendicular to both the horizontal axis (X) and the vertical axis (Y), as well as rotating independently about a first axis of rotation (A). Each spindle (15) rotates independently about a second axis of rotation (B).

Abstract: The present invention relates to a nano fluid electrostatic atomizing controllable jet minimal lubricating for grinding system. A grinding system is provided with a corona charging nozzle, a nozzle body of the corona charging nozzle is connected with a liquid supply system and an air supply system, a high-voltage direct-current electrostatic generator at the lower part of the nozzle body is connected with the cathode of an adjustable high-voltage direct-current power supply, the anode of the adjustable high-voltage direct-current power supply is connected with a workpiece charging device, and the workpiece charging device is attached to the non-machined surface of the workpiece. Nano fluid which used as grinding liquid is fed into the corona charging nozzle through the liquid supply system, meanwhile, the air supply system feeds compressed air into the corona charging nozzle.

Abstract: An apparatus (2, 22) for wet grinding of tungsten welding electrodes, comprising a drive motor for a rotating grinding wheel, means for fixing a welding electrode at a set angle relative to the grinding wheel (4), is disclosed comprising an angularly adjustable guide (6) for an electrode holder (8). The guide fixes the electrode holder at varying angular positions relative to a plane front side of the grinding wheel. A disc-shaped cutting device shortens the welding electrodes to a defined length.

Abstract: An apparatus and method for machining a superhard substrate comprising: a means for pre-cooling a non-aqueous cutting fluid at a temperature below 20 degrees C. and at atmospheric pressure to form a subcooled cutting fluid; a capillary tube injector, which saturates said subcooled cutting fluid with the solid and gas carbon dioxide; an inline static mixer for combining said subcooled cutting fluid and said solid and gas carbon dioxide; a spray application tool for applying said carbon dioxide saturated subcooled cutting fluid to the superhard substrate during a machining process; and a recovering apparatus for collecting said residual cutting fluid from the machined superhard substrate; said recovering apparatus can comprise a carbon dioxide spray cleaning, a liquid carbon dioxide immersion cleaning, or a supercritical carbon dioxide cleaning.

Abstract: A tool cutting apparatus includes a chuck table for holding a workpiece, and rotatable cutting means having a cutting tip for cutting the front side of the workpiece. Pure water and an additive are mixed to prepare a cutting fluid, and a cutting fluid nozzle supplies the cutting fluid to the cutting tip and the workpiece held on the chuck table.

Abstract: An adaptor and a connection device are provided. The adaptor and the connection device fix a tool to an arbor of a hollow spindle machine. The adaptor has an inlet opening at a first part of the adaptor, the inlet opening being connectable to the central passage way of the arbor. The adaptor has an outlet opening at a second part of the adaptor, the second part radially protruding over the first part and being adapted for holding the tool. The adaptor has a connection device for fixing the adaptor to the arbor and a fluid distribution passage way connecting the inlet opening with the outlet opening so that the coolant is supplied to the tool via the outlet opening of the adaptor.

Abstract: A cooling assembly for a machine tool including at least first and second nozzle rings mounted on the spindle housing, respectively defining first and second coolant conduits and respectively including first and second pluralities of nozzles in fluid communication with the respective conduit. Each first nozzle is oriented with an outlet thereof directed toward a first machining zone containing cutting edges of at last one tool having a first length. Each second nozzle is oriented with an outlet thereof directed toward a second machining zone different from the first machining zone and containing the cutting edges of at least one tool having a second length.

Abstract: A tool holder has a body with a spindle side for fastening the tool holder to a spindle of a machine tool and a tool side for accommodating a tool and has a lubricating media passage from the spindle side to the tool side that contains a lubricating media bush adjustable in the axial direction in the body. The lubricating media bush opens out on the tool side of the body, wherein a guide for the lubricating media hush is provided in the body. The guide contains a fitting section in which the lubricating media bush is adjustably guided, wherein a seal is provided which seals the lubricating media bush relative to the body.

Abstract: An apparatus comprises a housing and a tool holder that is mounted to a first end of the housing. The tool holder is configured for selectively engagement with a spindle to support the tool and selective disengagement from the spindle for interchanging the tool with other tools. The tool further comprises a work-piece end mounted to a second end of the housing to perform component forming functions and/or component inspection functions. At least one energy harvesting device at the housing is configured to harvest a form of energy associated with the operation of the apparatus to generate sufficient electrical power for wholly powering the machine implement. Accordingly, there is an electrical interconnection between the at least one energy harvesting device and the work-piece end.

Abstract: Device for cooling a rotating tool mounted on a machine, including elements for generating a continually renewed first flow of air, external to the tool and around the tool, at a high flow rate, produced via a Coanda-effect flow amplifier device realized in a housing fixed on the machine around the tool holder connected to a source of pressurized air.

Abstract: A machine permits an end of a thick-walled, high-pressure tubing to be chucked in a collet one time, coned, faced and threaded, using a coning head and threading head which are mounted on a carriage which can be translated laterally between three positions and the coning and threading heads parallel to the longitudinal axis of the workpiece to complete the coning and threading operations.

Abstract: A durable, accessory cover assembly for a computing device, such as a cellular phone or a tablet computer. The accessory cover includes a frame, a first covering portion, and a second covering portion. The first covering can be composed of a wear-resistant material, such as leather; whereas, the second covering can be composed of a pliable particulate-absorbing material, such as microfiber. The first covering can be configured to seamlessly cover an external bottom surface of the frame, four external lateral surfaces of the frame, and four internal later surfaces of the frame, as well as an overlap region of an internal top surface of the frame. The second covering can be configured cover a majority of the surface area of the internal top surface of the frame, where it abuts the first covering along an annular region.

Abstract: A tool arrangement with a tool receptacle and a tool, with at least one fluid channel for supplying a fluid to the tool provided in the tool arrangement. In order to allow an improved supply of alternative fluids to the tool, the fluid channel has at least one throttle point for maintaining the pressure in the fluid channel upstream of the throttle point, and the throttle point is suitable for keeping the pressure on the fluid sufficiently high such that no excessive premature evaporation of the fluid takes place.

Abstract: Device and method for milling of materials including a milling cutter body including a first end portion and an opposite second end portion. The first end portion is connected to a rotatable spindle and the second end portion is provided with at least one cutting edge. The milling cutter body defines a longitudinal axis and is provided with an axial recess, wherein at least one mass element is arranged in the recess. The axial position of the mass element in relation to the milling cutter body is tuned by use of tuning members included in the device for the tuning of the natural frequency of the device. The mass element is axially locked in relation to the milling cutter body by use of lock members included in the device, in order to optimize the natural frequency of the device for the milling operation in question.

Abstract: A machining device for machining crankshafts has a rotationally driven disk-shaped base body with blade inserts arranged peripherally thereon. A first supply line for a cryogenic cooling medium is arranged concentrically with the axis of rotation and is thermally insulated in at least some sections. The tool has a plurality of second supply lines for the cryogenic cooling medium running across the axis of rotation and leading to the blade inserts, the second supply lines each being thermally insulated in at least some sections. A distributor unit connects the first supply line to at least one of the second supply lines for supplying the cryogenic cooling medium to at least one of the blade inserts. The cryogenic cooling medium can be conducted directly to the blade inserts which are engaged with the crankshaft that is to be machined.

Abstract: A tool holder for a machining tool includes a cooling means for a compressed air blowing tool and a device for cooling air compressed by a vortex tube device. The tool holder is generally cylindrical and the vortex tube device advantageously includes a plurality of vortex tubes placed annularly around the axis of the cylinder and the cold air outputs of which are directed at the tool held by the tool holder.

Abstract: The object of the invention is to stably spray cutting fluid in a good mist form, when cutting fluid and air are supplied from the surrounding area and cutting fluid is sprayed in a mist form from the tip end section of a rotary cutting tool. The rotary cutter of the present invention sequentially feeds a mixture of cutting fluid and air through a supply pipe 4, first supply path b in a cover 3, second supply paths c, d in a chuck 2, a hollow center cavity (front throttle chamber d, throttle 24a, and rear throttle chamber e) in the chuck, and a third supply path g in a rotary cutting tool 1.

Abstract: A tool assembly for removing material from a work-piece is disclosed herein. The tool assembly includes a cutter having a plurality of cutting teeth spaced circumferentially about an axis of rotation along a cutting end periphery. The cutter also includes a body extending away from the cutting end periphery along the axis of rotation. The tool assembly also includes a passageway for directing a flow of coolant to the cutting end periphery. The passageway is defined at least in a part by the cutter. The tool assembly also includes a cap engaged with the cutter. The cap includes a dispersion disk positioned in spaced relation to the cutting end periphery whereby an annular gap is defined between the cutting end periphery and the dispersion disk along the axis of rotation. The gap communicates with the passageway for directing coolant radially outward to all of the cutting end periphery.

Abstract: A coolant distributor for use with a cutting head of a machine tool that is adapted to be rotated about a rotational axis. The coolant distributor comprises a generally cylindrical body adapted to be coupled to the cutting head about the rotational axis, the generally cylindrical body having a first end and an opposite second end, the first end being disposed adjacent the cutting head when the generally cylindrical body is coupled to the cutting head. At least one feed passage is formed in the generally cylindrical body, the feed passage having a first end disposed proximate the first end of the generally cylindrical body and a second end disposed proximate the second end of the generally cylindrical body. A deflecting element is disposed in the feed passage proximate the second end of the feed passage. An outflow passage is connected to the feed passage and disposed obliquely to the rotational axis.

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: The machine tool includes a saddle, a table which moves relative to the saddle, a telescopic cover fixed to the saddle, and a wiper fixed to the table. The telescopic cover protects a guide member which supports the saddle in such a manner as to be capable of moving with respect to the bed. When chips generated by the working of a workpiece placed on the table have deposited on the surface of the telescopic cover, the wiper fixed to the table removes the chips by the movement of the table and causes the chips to fall.

Abstract: A cutting fluid passageway that supplies a cutting fluid is disposed in a machining space (inside of a machine tool) of a machining tool isolated by a cover. The cutting fluid passageway is formed so that the upper portion thereof is opened in the passageway direction. Then, the cutting fluid is supplied from the cutting fluid passageway to a workpiece and a tool during machining or to the inside of the machine tool on which scattered chips produced by the processing are accumulated.

Abstract: A cutting liquid supply device in a machine tool is configured to remove gas mixed in a cutting liquid supply line to improve the response of discharging a mist of cutting liquid. Cutting liquid is supplied from a pump (42) through a rotary joint (28) to a mist generation device (24) within a rotating spindle (29). The pressure of the cutting liquid is measured by a pressure sensor (47). An air vent device (30) for opening and closing, with respect to atmospheric pressure, piping (3) that supplies the cutting liquid is provided above the rotary joint (28). A detection signal is inputted in the control board (70) from the pressure sensor (47), and when the control board (70) detects, after the pump (42) stops the supply of the cutting liquid to the piping (3), that the pressure of the cutting liquid does not decrease to a level lower than a predetermined threshold value, the control board (70) instructs the air vent device (30) to open the piping (4) to the atmosphere.

Abstract: An above plate coolant containment and recovery system for a machine having at least one machining head having a cutting tool in the form of a machining spindle with coolant supplied to the tooling and is designed for containing machining coolant during machining. The system includes a coolant guard apparatus and waste removal assembly. The coolant guard contains and separates coolant fluid as used during wet cutting machining for providing a dry cutting environment beyond the coolant guard apparatus. The coolant guard apparatus includes at least one shaped containment area formed with a substantially upright perimeter wall located on top of the plate to be cut to form the contained area, whereby the waste removal assembly, which is fluidly connected to the coolant guard apparatus, causes the removal of the used coolant and machining solid waste without leaking beyond the containment area.

Abstract: A cooling assembly for a machine tool including at least first and second nozzle rings mounted on the spindle housing, respectively defining first and second coolant conduits and respectively including first and second pluralities of nozzles in fluid communication with the respective conduit. Each first nozzle is oriented with an outlet thereof directed toward a first machining zone containing cutting edges of at last one tool having a first length. Each second nozzle is oriented with an outlet thereof directed toward a second machining zone different from the first machining zone and containing the cutting edges of at least one tool having a second length.

Abstract: A tool holder has a first holder part for inserting into a receptacle in the machine tool and a second holder part for holding a tool. The tool holder has a conduit for directing a coolant and/or lubricant to the tool from a coolant and/or lubricant source. The tool has a conduit section for the coolant and/or lubricant for directing the latter to a machining point, and wherein, in the fitted state of the tool in the tool holder, the conduit is in contact with the conduit section at a coupling point. Provision is made for there to be an air feed line which directs compressed air from a compressed-air source into the region of the coupling point in such a way that the compressed air acts on the outer circumferential surface of the conduit and of the conduit section. Furthermore, methods for operating such a tool holder are described.

Abstract: A rotary coolant adapter that is compatible with commercially available tool holders attaches to a rotary tool holder to supply coolant to a flow path in a rotary tool. The rotary coolant adapter has a stationary outer housing and a stationary supply tube for supplying coolant to an annular coolant manifold that surrounds a portion of the rotary tool holder. An internal radial feed tube supplies coolant from the annular coolant manifold to the flow path in the tool. Bearings support the stationary outer housing on the rotary coolant holder, and seals are located between the annular coolant manifold and the bearings to prevent coolant leakage from the annular manifold reaching the bearings.

Abstract: An apparatus and method for using an apparatus to machine honeycomb cores are disclosed. A honeycomb core is inserted into a channel in an apparatus with removable dams. The core is flooded with a fluid which is frozen. The frozen block is machined while supported by the apparatus. The block is then melted and the machined honeycomb is removed.

Abstract: A tool holder assembly including a cutting tool and a tool holder. The cutting tool includes at least one fluid passage. The tool holder includes a conduit and a bore adapted to receive the cutting tool. An adapter or adapter portion may be provided that provides a fluid to one or more fluid passages in the cutting tool.

Abstract: A tool holder includes a drawing screw and a stopper member. The drawing screw is positioned in an intermediate hole. A rear end face of a head of the drawing screw faces a boundary wall surface, and a top end of a shaft of the drawing screw is screwed in a rear end of a collet. The stopper member is positioned in an annular space between an outer peripheral surface of the shaft of the drawing screw and an inner peripheral surface of the intermediate hole. The stopper member faces a front end face of the head of the drawing screw, and limits movement of the head toward a top end of the tool holder. The drawing screw and the stopper member are inserted and assembled from a top end opening of a collet holding hole.

Abstract: A tool holder includes: a shank portion gripped by a main shaft; a tool attachment portion having an insertion port into which a tool is inserted in a tip end surface thereof; a cover having a tubular wall that covers an outer periphery of the tool attachment portion and a bottom surface that covers the tip end surface of the tool attachment portion; a bearing provided between the tubular wall of the cover and the tool attachment portion; and a stopper that prevents the cover from co-rotating with the tool attachment portion. A through hole penetrated by the tool and an ejection port disposed on a periphery of the through hole in order to eject the coolant toward the tool are provided in the bottom surface of the cover.

Abstract: Disclosed is a machining device, particularly for producing tooth replacement parts or models thereof, comprising a workpiece holder and at least one machining tool which is disposed in a machining space for a workpiece that is mounted therein. The feeding axis for the workpiece into the machining space extends at an angle relative to the horizontal.

Abstract: A tool comprising a cutting section on which a multiplicity of blades or cutting edges and flutes are formed; a shank section, which forms a chucking section on a side which faces away from the cutting section, wherein a number of fluid channels which corresponds to the number of flutes is formed in the chucking section in such a manner that the fluid which emerges from axial discharge openings of the chucking section can be fed in a free jet along the shank into in each case one associated flute of the cutting section. Also, a method for supplying the blades of such a tool.

Abstract: In a method and a machine tool for machining metallic workpieces, a cooling device is provided to supply a cryogenic coolant to a first tool and a precooling device is provided to supply the cryogenic coolant to a second tool. The first tool is held in a first chuck and processes a workpiece, with the first tool during processing being cooled via the cryogenic coolant. The second tool is held in a second chuck and will subsequently be used for processing the workpiece. The second tool is supplied via the precooling device with the cryogenic coolant and thus cooled to the operating temperature required for processing. Due to the fact that the second tool is precooled to the required processing temperature, after the change of tools, the processing of the workpiece can be continued immediately. By precooling the second tool during the primary processing time, the total processing time of the workpiece is reduced, providing the machine tool with higher productivity.

Abstract: A tool holder includes: a shank portion gripped by a main shaft; a tool attachment portion having an insertion port into which a tool is inserted in a tip end surface thereof; a cover having a tubular wall that covers an outer periphery of the tool attachment portion and a bottom surface that covers the tip end surface of the tool attachment portion; a bearing provided between the tubular wall of the cover and the tool attachment portion; and a stopper that prevents the cover from co-rotating with the tool attachment portion. A through hole penetrated by the tool and an ejection port disposed on a periphery of the through hole in order to eject the coolant toward the tool are provided in the bottom surface of the cover.

Abstract: This processing machine comprises a casing (4), a tool-holder spindle (6) which is to carry a machine tool, a positive feed drive mechanism for the spindle (6), which mechanism is suitable for driving the spindle (6) simultaneously in rotation and in translation relative to the casing (4) in accordance with an advance or return movement, and a system (12) for lubricating the machine tool, comprising a lubricant inlet (40), a lubricant duct (42) delimited by the spindle (6), the lubricant duct (42) opening out at an end of the spindle (6) carrying the machine tool, in order to supply the machine tool (7) with lubricant, and a lubricant-admission module (44) connecting the lubricant inlet (40) to the said lubricant duct (42). The lubricant-admission module (44) forms a lubricant pump drawing in the lubricant from the lubricant inlet (40) and supplying the lubricant duct (42) of the spindle (6), the advance and return of the spindle (6) activating the pumping of lubricant by the admission module (44).

Abstract: A spindle head device (10) includes a spindle (12) and a tool retaining mechanism (16) detachably retaining a tool holder (14) on the spindle. The tool retaining mechanism includes a tool support member (52) having a receiving recess (50) detachably receiving the shank (46) of the tool holder, a tool clamp member (54) disposed to be displaceable with respect to the tool support member between an operative position and an inoperative position, and a mounting member (56) detachably mounting the tool support member and the tool clamp member to the spindle. The tool clamp member grips the shank of the tool holder and fixedly holds the shank to the receiving recess of the tool support member at an operative position, and, at an inoperative position, releases the shank to allow the tool holder to be attached or detached to or from the receiving recess.

Abstract: The invention is provided to improve the cooling efficiency for cooling a throw away tip regardless of whether a tip holder is rotating. A throw away type rotary cutting apparatus comprises a throw away tip having a cutting edge formed thereon, a tip holder having a support section that holds the throw away tip, a drive unit that supports and rotates the tip holder, and a mounting table that can move relative to the axis of rotation of the tip holder, wherein the tip holder further comprises an inlet path that is formed in the position of the axis of rotation and through which coolant is introduced, a heat exchange section that performs heat exchange between the introduced coolant and the throw away tip, and a discharge path that discharges the coolant after heat exchange. Cooling efficiency is improved by cooling the throw away tip from mainly the inside of the tip holder.

Abstract: A cutting method capable of efficiently removing cutting chips around a cutting point with a little electric power, and cutting a work with high accuracy with a ball end mill. The ball end mill has a slit shaped-opening part at a portion adjacent to a rake face of a cutting edge in internal communication with a suction passage, and a work in which a cutting liquid is previously coated on an inclined face of the work is cut while the cutting liquid is sucked in the area around the cutting edge from the opening part through the suction passage. As a result of this, the cutting liquid in the area around the cutting edge is sucked from the opening part and a cutting power decreasing rate is higher than in a case where the suction is not carried out.

Abstract: A machine tool (1) for processing a workpiece (2) by relative movement of a tool (18) with respect to the workpiece (2), including a homogenizer (15) into which water and oil are taken to disperse oil homogeneously in water, a working fluid produced in homogenizer (15) being supplied to a work area for processing of the workpiece.

Abstract: Multiple fluid nozzles are mounted in a machine tool such that the cutting tool in the spindle is targeted with liquid or gas cutting fluid from multiple directions, providing better coverage and thereby more effectiveness. This provides more efficient and safer use of a machine tool by automating the aiming of fluids at a desired location. Multiple nozzles at respective multiple physical locations are preferably controlled by a single control unit, so they can be synchronized to maintain a common target point on a cutting tool, even if the nozzles are located asymmetrically or non-uniformly with respect to the spindle axis or target point. Preferably, modular nozzle assemblies can be configured for flexibility in mounting on the machine tool.

Abstract: A multi-spindle machining machine with a tool changing mechanism comprising a base; a carrier including a seat to move in Z axis, a rotary shaft fixed on the seat laterally to drive the seat to rotate in A axis, and a fixing holder coupled to an end portion of the rotary shaft to fix a workpiece; a tool changing mechanism including a mount mounted to the rotary shaft to rotate with the rotary shaft and a monitor fixed on the seat to measure a length of the tool clamped on the driving spindle, and including a plurality of slots to receive the tools respectively; a working head moving above the carrier and the tool changing mechanism in X and Y axes and including a driving spindle mounted on a lower end thereof to rotate axially, and the lower end of the driving spindle allowing to engage and disengage the tool.

Abstract: Cryogenic fluids are delivered along an axial path through a machine tool spindle to a cutting tool that is mounted in a standard tool holder. An external source of cryogen is delivered via an insulated line to a junction block housing where the cryogen flows into a vacuum insulated coolant delivery tube mounted on the axis of rotation of the spindle. The coolant delivery tube couples with a cryogenic manifold located in a standard tool holder in the end of the spindle. The cryogenic manifold couples the cryogen to a tool that is mounted in the tool holder. Before a tool change operation, the coolant delivery tube is raised to disconnect it from the cryogenic manifold, and to turn off the flow of cryogen to the delivery tube.

Abstract: The subject-matter of the invention is a machining unit for a milling and drilling machine, comprising a spindle housing (1) which is supported on a machine part and can be moved in a longitudinal direction, a milling head (5) mounted on the face end of the spindle housing (1), a work spindle (6) supported in the milling head (5) and comprising an electric drive motor, and an energy and working stock supply to the milling head (5) formed of bunched lines and cables. The bunched lines and cables for the energy and working stock supply are disposed inside the spindle housing (1) in the shape of a string (25) and introduced into the milling head (5) via a rotary transmission leadthrough (8) on the face.

Abstract: A device for supplying coolant into a shank of a rotary tool as well as a rotary tool, in particular a drill. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.