Abstract: An automatic cutting liquid supply apparatus which automatically supplies a cutting liquid to each tool of a machine tool in accordance with predetermined optimal cutting liquid supply conditions that include variations over time during operation. The optimal supply conditions of the cutting liquid supply quantity (Q) are preset for each type of tool (1) in a control means (5). The control means (5) is constructed from a main control section (5a), which mainly controls the driving of the main shaft units (2) on which the tools (1) are mounted, and an automatic supply control section (5b), which automatically controls the cutting liquid supply quantities (Q). An input signal (Vin) corresponding to the supply conditions (preset) is inputted into the variable frequency generating means (5c) from the automatic supply control section (5b).

Abstract: The present invention relates to a nozzle for use in a metalworking process, whereby the nozzle is designed to precisely deliver an oil-containing liquid and nonflammable gas mixture onto the interface between a metalworking tool and a workpiece, whereby the nozzle is comprised of a tip and a valve body affixed to one another. Furthermore, the present invention relates to a method for cooling and lubricating a tool and workpiece during a metalworking process.

Abstract: A method and apparatus for dice manufacture including robotic manipulation of a work piece to obviate manual handling and reduce risk of worker injury.

Abstract: A chuck includes a generally cylindrical body having a nose section and a tail section. The tail section is configured to rotate with the drive shaft, and the nose section has an axial bore formed therein. The body defines an air passageway extending through the body between the axial bore and an area about the tail section. A generally cylindrically sleeve is disposed about the body and substantially encloses the area. It is configured to extend to a housing of the drill so that air from the fan is forced into the area, through the air passageway and into the axial bore.

Abstract: A tool having a base body which carries cutters for machining bores in a workpiece, the cutters being arranged coaxially with one another. The base body further has at least one lifting element, with which the base body can be moved from an eccentric position in relation to an axis of the workpiece bores into a central position, in which the axis of the tool coincides with the axis of the workpiece bores.

Abstract: A power feed attachment that has a coupling structure to couple it to a hand held drill. A double-acting cylinder, which has a piston and a rod, and is fixedly coupled to the coupling structure. A two-position valve assembly is configured for directing a pressurized fluid to the double-acting cylinder. When the two-position valve assembly is in a first position is directs a fluid to a first side of the piston moving the piston to a first position. When the two-position valve assembly is in the second position it directs the pressurized fluid to a second side of the piston to move the piston to a second position. An arm is coupled to the piston. A control mechanism having a housing and a control rod, wherein the control rod is movable within the housing of the control mechanism between an extended position and a retracted position.

Abstract: An end effector having a platform and a motor coupled to the platform for driving a drilling member. A motor housing is coupled to the platform and includes a plurality of photogrammetry targets secured thereto. The photogrammetry targets are oriented so as to be readily detectable by a photogrammetry sensor for determining the orientation of the end effector and corresponding drilling member. A pressure foot member and pneumatic cylinders are operably coupled to the platform such that the pneumatic cylinders maintain a constant pressure upon the pressure foot member to provide material clamp up. A depth control device is also provided for accurately controlling the depth of the drilling member and preventing further drilling.

Abstract: Arrangement for delivering coolant fluid to the rotating part (1,3) of a tool spindle intended to support a tool at one end. It is distinguished in that the end of the rotating part (1,3) that is opposite the tool is accommodated in a unit (4) that is stationary in relation to the rotating part (1,3), that the rotating part has an axial bore (6) of the rotating part (1,3), that a gap sealing separates the rotating part (1,3) from the stationary unit (4) adjacent to the inlet thereby forming a dynamic bearing during the rotation of the rotating part due to leakage of the coolant fluid through the gap sealing.

Abstract: An end effector having a platform and a motor coupled to the platform for driving a drilling member. A motor housing is coupled to the platform and includes a plurality of photogrammetry targets secured thereto. The photogrammetry targets are oriented so as to be readily detectable by a photogrammetry sensor for determining the orientation of the end effector and corresponding drilling member. A pressure foot member and pneumatic cylinders are operably coupled to the platform such that the pneumatic cylinders maintain a constant pressure upon the pressure foot member to provide material clamp up. A depth control device is also provided for accurately controlling the depth of the drilling member and preventing further drilling.

Abstract: A lubricant supply apparatus 1 includes a tank holder portion 3 and a lubricant tank portion 2. In case where a tool holder clamp device 62 provided on a spindle shaft 61 pushes against an abutting member 35 disposed in the lubricant supply apparatus 1, lubricant filled in a pressure chamber 11 formed in the lubricant supply apparatus 1 can be jetted out from injection holes 39, —formed in the abutting member 35. The thus jetted-out lubricant is supplied to the tool holder clamp device 62.

Abstract: An indexable insert having a heat absorbing performance, and an indexable tool using the same.

Abstract: A machine tool fluid distribution apparatus comprising a housing, a pump, a fluid distribution system, and a controller. The pump is mounted in the housing. The pump is adapted for discharging, from a discharge end of the pump, fluid at a different pressure than a fluid pressure available in a machine tool. The fluid distribution system is connected to the discharge end of the pump, the fluid distribution system distributes fluid from the pump to workstations of the machine tool. The fluid distribution system has at least one pair of outlets at the housing for distributing fluid to the workstations of the machine tool. The controller is controllably connected to the fluid distribution system for controlling the fluid distribution system. The controller controls fluid to at least one of the at least one pair of outlets independently from fluid to another one of the at least one pair of outlets of the fluid distribution system.

Abstract: The present invention provides a method of forming an aperture in an electronic support, comprising: (A) positioning an electronic support in registry with an aperture forming device; and (B) forming an aperture at least partially through the electronic support with the aperture forming device while dispensing a fluid stream comprising at least one solid lubricant, proximate the aperture forming device during at least a position of the forming, such that the at least one solid lubricant contacts at least a portion of an interface between the aperture forming device and the electronic support.

Abstract: Supply unit for a tool spindle wholly or partially equipped with a moveable pulling rod (3) axially displaceable in the spindle axle (1) for firmly attaching the tool with a fluid supply system for displacing the pulling rod (3), with a fluid supply system for cooling a rotor (22) of a driving source supported on the spindle axle for driving the spindle axle, a fluid supply system for cooling the tool, and a gas supply system for blocking fluid leakage in gaps between parts that move in relation to one another. The supply unit includes, for one or more of the said systems, at least one sensor that senses if a malfunction exists in the fluid and/or gas supply system, and, for one or more of the said systems, an accumulator (704, 164, 243) that from indicated malfunction signals obtained from one or more sensors feeds into the system or systems complementary and replacement fluid respectively gas to the tool spindle at the same time as the sensor or sensors deactivate the driving source of the spindle axle.

Abstract: Tool spindle with a moveable pulling rod (3) axially displaceable in the spindle axle (1) for firmly attaching a tool at the axle of the spindle. The end (10) of the pulling rod (3) that is opposite to the tool extends into a unit (4) that accommodates the end of the pulling rod and that is stationary in relation to the rotation of the pulling rod, that the pulling rod (3) is provided with a piston (11) accommodated in a cylinder chamber (13) arranged in the spindle axle (1) and having at least a first (12b) and a second (12a) axial bore of which the first bore (12b) opens in the cylinder chamber (13) on one side of the piston (11) and the second bore (12a) opens in the cylinder chamber (13) on the other side of the piston (11).

Abstract: A machine tool fluid distribution apparatus comprising a housing, a pump, a fluid distribution system, and a controller. The pump is mounted in the housing. The pump is adapted for discharging, from a discharge end of the pump, fluid at a different pressure than a fluid pressure available in a machine tool. The fluid distribution system is connected to the discharge end of the pump, the fluid distribution system distributes fluid from the pump to workstations of the machine tool. The fluid distribution system has at least one pair of outlets at the housing for distributing fluid to the workstations of the machine tool. The controller is controllably connected to the fluid distribution system for controlling the fluid distribution system. The controller controls fluid to at least one of the at least one pair of outlets independently from fluid to another one of the at least one pair of outlets of the fluid distribution system.

Abstract: A cleaning device for a machine tool is provided wherein the machine tool is provided with an automatic tool change mechanism for replacing a tool attached to a main shaft by another tool, and a cutting fluid nozzle for emitting coolant supplied from a coolant pump to a cutting location where a workpiece is machined by a tool. The cleaning device has at least one cleaning nozzle from which clean coolant is sprayed toward portions of the machine tool where adherence of machining chips affects changing of tools. The cleaning nozzle includes a nozzle hole that is open downwards, and an inclined wall that faces the opening of the nozzle hole and is inclined in a direction pointing to the tool. During changing of tools, clean coolant is supplied from the coolant pump to the cleaning nozzles through a filter.

Abstract: A machining unit on a machine tool, especially a universal milling and drilling machine, comprising a motor-driven work spindle rotatably mounted in a casing of a spindle head, an adapter unit comprising a motor-driven adapter spindle and insertable into the work spindle, a first connecting part disposed on the spindle head and containing plug-in connections connected by lines to supplies of working media and a second connecting part disposed on the adapter unit, and containing mating plugs which can be coupled to the plug-in connections for releasably connecting the adapter unit to the working-media supply. A clamping device for releasably holding the plug-in connections and mating connections in the coupled position is disposed on at least one of the two connecting parts, thus providing a secure connection between the plug-in connections disposed in the spindle casing and the mating connections disposed on the adapter unit.

Abstract: A quill spindle includes a quill assembly within which a spindle assembly is rotationally mounted. The quill assembly includes a coolant flow path, and the spindle assembly includes a plurality of coolant flow paths. The quill assembly flow path and one of the plurality of spindle assembly flow paths provide cooling to bearings that allow the rotation of the spindle assembly within the quill assembly. Another of the plurality of coolant flow paths within the spindle assembly provides cooling flow to a cutting tool installed on an end of the quill spindle.

Abstract: Disclosed is a high speed-perforating apparatus 1 comprising a rotor 17 into and through which a cylindrical rotary shaft 11 is integrally inserted, a stator 18 disposed around the outer periphery of the rotor 17 and a core bit 13 which is directly connected to the head end portion of the rotary shaft. A bit 15 having an outer diameter of up to 40 mm and a cutting edge thickness of less than 2 mm is used for the core bit 13. Perforation is carried out by the core bit 13 which is rotated at a high speed of 4000 rpm or more by a direct motor 2 comprising the rotor 17 and the stator 18. A perforating time can be greatly shortened by rotating the core bit at high speed.

Abstract: A frame-like nozzle for liquid coolant disposed above a machining tool is connected to a vertical main shaft. The nozzle is coaxial with the main shaft and directed downward. The nozzle has an inner peripheral wall, an inner flange formed in or close to the inner peripheral wall, an upper framework having a ceiling serving as a guide surface, and a lower framework. The liquid coolant flows upwardly out from the inside channel in a planar radial manner. The upper framework has an outer peripheral wall serving as an outside guide surface for downwardly bending the liquid and cooperating with the flange to define an outside channel. A flow agitating recess is formed in the wall surface. The lower framework includes a level difference, and forms a floor by which the coolant reaching the lower end of the outer peripheral wall is guided radially inward through the difference. Coolant is allowed to flow downward. The inner edge of the floor defines a circulatory waterfall opening.

Abstract: A machining method for a workpiece with a lathe device, wherein compressed air and liquid are individually supplied to the interior of a turret. After the compressed air and the liquid are separately passed through the interior of the turret, they are separately supplied to the interior of a tool holding means fixed to the turret. At the interior of the tool holding means, the compressed air and the liquid are mixed and atomized to form a mist. Atomized mist is then delivered to a tip of a working tool for machining, either along the outer surface or within the interior of the working tool, and is sprayed onto a working part from the tip of the working tool. The machining method does not cause problems such as hardening, like quenching, of a surface of the workpiece with generated cutting heat even during high-speed cutting.

Abstract: A method of high speed milling, and apparatus for performing the method, comprises directing a jet of hgih pressure coolant at the cutting zone of a rotary cutting tool. The jet of coolant has a delivery pressure of up to 500 bar at a flow rate of up to 60 liters per minute. The method is especially effective when used with a rotary cutting tool having at least 20 cutting edges and up to 100 cutting edges.

Abstract: A tool for milling and drilling where the rotating tool has a bearing surface provided to cooperate with another bearing surface to take up radial cutting forces. The two surfaces are essentially axially non-slidable when the cutting tool is engaging the workpiece.

Abstract: A cutting method in which a solution is sprayed or jetted to a machining portion when machining by use of a water-insoluble cutting oil, wherein recovered liquid is collected and stored in one recovery tank, and separated into the water-insoluble cutting oil and another solution on the basis of the specific gravity difference, and are re-used. Stable machining is enabled by using the water-insoluble cutting oil, and measures against disaster are fully taken.

Abstract: A cutting tool for a machine tool including a tool body, at least one cutting edge and a cutting medium supplier. The tool body has one and another end portions along an axis thereof and is configured to be attached to a machine tool at the another end portions to be rotatable. At least one cutting edge is provided on the one end portion of the tool body. The cutting medium supplier supplies an atomized cutting fluid or a chilled gas to a place where a work is cut by the cutting edge.

Abstract: A control apparatus for a drilling machine and a drilling method capable of quick adaptation to drilling by drills of various diameters, especially drills of small diameters, and of improving cutting efficiency. The control apparatus includes a cutting condition setting unit for setting the cutting conditions in accordance with the depth of the hole being drilled and a control unit for controlling the rotary speed and movement position of the drill. The cutting condition setting unit defines the regions of the beginning part, the inner part, and the penetration part from the side close to the drill of the workpiece toward the depth direction of the hole of the workpiece in accordance with the depth of the hole when drilling a throughhole.

Abstract: In an automated quarry operation an unmanned high pressure computer controlled liquid jet cutting system particularly adopted for cutting granite on-site with device for automatically and safely shutting off the operation upon encountering unforeseen, unusual or abnormal technical problems and circumstances such as unworkable hard spots, unusual water pressure etc. The system also includes automatic communication of the status of the system. The system includes a power unit, a balanced oscillator, a communication interface, a plurality of sensors and transducers, an optional mobile system, multiple intensifiers, one or more nozzles with diamond or sapphire orifice and a micro-controller with a control panel for programming and controlling rise and fall, indexer and oscillator system.

Abstract: A machine tool accessory fluid distribution apparatus comprising a booster pump, a fluid distribution system, and a controller. The booster pump is adapted for discharging, from a discharge end of the pump, fluid at a different pressure than a fluid pressure available in a machine tool. The fluid distribution system is connected to the discharge end of the booster pump, the fluid distribution system distributes fluid from the pump to workstations of the machine tool. The controller is controllably connected to the fluid distribution system for controlling fluid distribution to the workstations of the machine tool. The controller controls fluid delivered by the fluid distribution system to at least one of the workstations independently from fluid delivered by the distribution system to another one of the work stations of the machine tool.

Abstract: A mounting attachment for a penetrating tool such as a drilling head on a machine with a machining shaft includes a support provided with means for coupling to a machine; a tool holder provided with means for fixing a tool; means for axially guiding the tool holder relative to the support; means for linking in rotation the tool holder and the support; and elastically deformable suspension means for suspending the tool holder from the support, the suspension means allowing axial translation and self-sustaining reciprocating or vibrating axial movements of the tool holder resulting from a controlled displacement of the support with respect to a workpiece.

Abstract: A scrap removing and tool cooling device includes a cooling air conduit adapted to be disposed in a housing of a machine tool and extending in an axial direction parallel to a tool spindle of the machine tool. The cooling air conduit includes an inlet formed in the housing for introducing cooling air therein, and an outlet passing through a front end wall of the housing. A hood member includes a rear surrounding wall engaging the front end wall of the housing and extending to surround and be spaced apart from a front holding end of the tool spindle with a first distance so as to cooperate with the front end wall to define a chamber to communicate with the outlet, and a front surrounding wall extending forwardly from the rear surrounding wall and surrounding and spaced apart from the front holding end with a second distance smaller than the first distance so as to cooperate with the front holding end to define a blowing outlet to communicate with the chamber.

Abstract: A drilling machine primarily employed in drilling holes in a glass plate comprises a vacuum suction table for putting a glass plate thereon, a plurality of fasteners to fasten vacuum suction table on the glass plate, an adjusting screw for precisely positioning drill seat to above a desired position, a motor drive to provide a power for enabling drill to move downwardly to drill, and a lubricating device for feeding lubricating oil on drill during operation for decreasing drill temperature and dust occurred. With the drilling machine, a quality product with high precision as well as increasing efficiency and safety are realized.

Abstract: In order to process a solid processed object with a simple construction, and to process a solid and flat work while effectively collecting particulate scraps, in a machine tool for processing work in which a working table on which the work is mounted and a spindle in which a cutter is installed move relatively to each other, a bellow which telescopes freely is provided, one open end of which connects to the spindle head so as to surround the spindle, and the other open end of which connects to a working table in such a manner as to surround the work.

Abstract: A portable pneumatic tool includes a housing composed of two symmetric half shells or several partially cut-away shells; an air inlet module unit, a valve actuating module unit and an operating (or functioning) module unit fluidically communicated with one another and connected with flexible hoses among the module units; and a shock-absorbing unit retained between the operating module unit and the housing; whereby upon embedding or fixation of all the module units into the corresponding cavities in the shells and upon combination of the shells, a portable pneumatic tool will be instantly obtained having advantages of light weight, shock-absorbable property, easy assembly, lower production cost and convenient maintenance.

Abstract: A rotary tool for imparting rotation to a drill or an attachment element (2), and including a rotation-imparting element (14), and apparatus (6) for storing a cooling medium, and a conduit (7) for delivering the cooling medium to an operational side end region of the drill or of the attachment element (2).

Abstract: A work machining method including ejecting from a nozzle a plurality of liquids separately toward a workpiece to be machined and a machining part and mixing the liquids each other as the liquids are made in a mist form; whereby the liquids in a mist form are supplied toward the workpiece to be machined and the machining part, and an apparatus for supplying mist including an air supply tube having an ejection nozzle installed in a work machining apparatus; the air supply tube having a hole on a point of the ejection nozzle and an air outlet in a peripheral area of the injection nozzle; and a cooling water supply tube and an oil cutting fluid supply tube within the air supply tube; wherein each open end of the supply tubes is opened to the hole of the ejection nozzle. With this method and apparatus, the quality of the liquids may not deteriorate, a cooling effect and lubricity are provided at the same time on the parts, and further the pressure of compressed air, water and oil can be separately regulated.

Abstract: A drilling tool including a chuck (10) for receiving a drill (2), a cooling medium delivery conduit (3) for delivering a cooling medium to the drill (2), and a first valve (5) for controlling flow of the cooling medium through the delivery conduit (3) and having an inlet (50) and an outlet (51) a cross-section of which can be reduced to zero.

Abstract: An automatic fluid valve (25) includes a drive member (32) having an aperture (43) and a driven member (54). The automatic fluid valve (25) also includes at least one torque transfer member (38) for transferring torque from the drive member (37) to the driven member (54) and at least one elastic member (36) disposed between the drive member (32) and the driven member (54). The at least one elastic member (36) is responsive to a force transferred by the driven member (54). The automatic fluid valve (25) also includes a fluid blocking member (30) disposed within the aperture (43) for selectively allowing or preventing the flow of fluid (100) through the aperture (43). The fluid blocking member (30) is responsive to compression or decompression of the at least one elastic member (36).

Abstract: An open ended cylindrical drill attachment for attachment on a drill bit to collect dust while drilling. The drill attachment having an inner structure formed of vanes extending from inner walls to slightly offset the center, to form a central channel for receiving the drill bit and providing at least partial engagement so as to rotate the drill attachment and provide a vortex-like suction action and centrifugal entrapment. The drill attachment also acts as a drilled hole depth limiter.

Abstract: A drilling apparatus capable of removing drill chips from a workpiece under vacuum. The drilling apparatus includes an elongated drill having a body and a shank. The body has an axial through hole to receive drill chips. The shank has a plurality of radial holes communicated with the axial holes of the body. A vacuum adapter is hermetically placed around the shank and includes a cylindrical hollow body. The hollow body of the adapter includes a radial through port. The radial through port has one end communicated with the radial holes and the other end communicated with an external source of vacuum through a vacuum hose. A cylindrical extension unitarily extends from one end of the hollow body of the adapter and includes an annular projection. The shank has a corresponding annular groove to lockingly receive the annular projection in order to lock the adapter against axial displacement relative to the drill.

Abstract: A coolant liquid feeding method comprises feeding a coolant liquid, with air bubbles caused to form continuously therein, for cutting or grinding operation to a region under machining, expediting the splashing of air bubbles in all directions when the air bubbles impinge on the region under machining and burst, and also expediting the entry of accelerated splashed liquid particles into a cutter/workpiece pressure contact plane, thereby improving the cooling and lubrication of the region under machining, whereby the air bubbles in the coolant liquid which has failed to reach the region under machining or which, though reaching there, has left there for the recovery channel are allowed to adhere to suspended foreign matters in the liquid, thereby expediting the surfacing of the foreign matters.

Abstract: A machine tool comprises a spindle which has a tool receptacle for tool holders. Also provided are a tool changing apparatus for transferring the tool holders between their respective magazine position and a working position in the tool receptacle, and an internal cooling system which delivers coolant from a coolant supply system, through an internal duct running longitudinally through the spindle, to a tool holder clamped into the tool receptacle, in order to flush out a tool that is in use. Also provided is a flushing apparatus in order to flush the tool holder while it is being inserted into the tool receptacle, the flushing apparatus flushing with coolant from the coolant supply system.

Abstract: A chuck for a rotatable tool, such as a drill, a screw tap and the like has a chuck sleeve receivable in a machine and having a central receptacle, a sleeve provided for a tool and releasably inserted in the receptacle, the sleeve having a central main passage for a cooling and/or lubricating medium and grooves for supplying the cooling and/or lubricating medium in a longitudinal direction and outwardly of the tool, the sleeve having an axial opening adopted to extend over a whole length of a shaft of the tool for holding the shaft, the grooves for the cooling and/or lubricating medium in the sleeve being provided on an inner side of the axial opening and extending axially over a whole length of the sleeve, the grooves at one end communicating with the central passage in the chuck sleeve and at another end being axially freely open.

Abstract: A housing having a cylindrical upper portion for attachment to the quill of a vertical milling machine. The lower portion of the housing includes two concentric cones of funnel shape extending downward from the upper portion having a funnel opening at the bottom for passage of a cutting tool, and for use as a vacuum port for extraction of waste coolant and chips. The space between the two cones provides passage of air and coolant which is ejected at the bottom of the cones and directed to the cutting tool and work piece. The angle of air ejection depends on the angle of the cone. The housing upper portion has an air input connector for supplying the air to the space between the two concentric cones, and contains channels for directing coolant from a coolant input connection to a plurality of fluid lines configured between the cones to carry the fluid to the opening at the bottom of the cones for directing the coolant towards the cutting tool.

Abstract: A cooling apparatus for cooling a tool rotated by a spindle of a machining device. The cooling apparatus includes a tube having a plurality of orifices. The tube is mounted onto a stationary housing about the spindle to substantially encircle an axis of the tool. The apparatus also includes a plurality of nozzles connected to a respective one of the orifices, each of the nozzles directing a discharge of fluid substantially toward the tool.

Abstract: A tool holder having a holder body, a collet, an intermediate rod, a clamp bolt and a pull stud. The collet and the intermediate rod are integrally connected by screwing. A spacer is mounted to the front end of the holder body and has an opening hole with a diameter nearly matching with the diameter of the shank portion of the cutting tool. In the opening hole, a tapered groove portion with an enlarged diameter portion on the rear and a reduced diameter portion on the front is formed, and in this groove portion, a sealing O-ring is mounted. A cap for holding the spacer is screwed down to the front portion of the holder body, and the cap and the holder body come in pressure-contact at each other's tapered surfaces.

Abstract: A spindle protective structure capable of reliably detecting coolant leakage from a jointing device and protecting a spindle. A flow sensor is provided in the line of a drain pipe for discharging coolant leaking from the rotary joint, so that an alarm is made when the flow of coolant in the drain pipe exceeds a predetermined value. Since the coolant leaking from the jointing device is detected directly and an alarm is outputted, coolant leakage can be found out more quickly than by observing visually whether the flow of coolant jetting from a tip of a tool is normal or not.

Abstract: A programmable, variable volume and pressure, coolant system regulating the amount of coolant flow to a cutting tool by controlling the speed of a coolant pump, and is comprised of a fluid control unit and an electrical control panel. The fluid control unit includes a pump and a AC pump motor operatively connected thereto. The electrical control panel includes: a power supply; circuit breakers; a computer; a variable frequency drive; control relays; and a junction block for making electrical connections to the control panel. The computer receives signals from the tool and a pressure transducer, and is programmed with information concerning the total flow area of the coolant orifices. Using this information, the computer determines an ideal pump speed, and sends a control signal to the variable frequency drive which in turn determines the pump motor speed.

Abstract: For influencing the run of a deep hole drilled passage in a metallic or non-metallic material a pusher pad (6) variable in strength and position is interposed between the drill rod (2) driving the drill tool (1) or the drill tool (1) itself and the inner wall of the drilled passage so that it causes a bending of the drill rod such that the drill tool assumes a changed run. The variation in the position and/or thickness of the pusher pad (6) can be fed back to the sensing of the corresponding position of the drill tool (1) and controlled by the results of sensing.

Abstract: A clamping device has a collet or a sleeve that contains an inner coolant supply. The non-through parts of the clamping device have formed therein radial slits and/or intermediate slits that open at the machine side and/or the tool side of the shank of the device. The slits and non-through parts of the device are arranged in such a way that they form a coolant barrier.