Abstract: The whirling device comprises a retaining ring extending around a ring axis and a central opening and having at least one receiving area for a machining element for machining rod-shaped material in the area of the central opening. A coolant supply comprises a supply sleeve which is arranged on the retaining ring via a rotary bearing and comprises a coolant connection and a supply area adjoining a connection area of the retaining ring. Starting from at least one inlet opening in the connection area of the retaining ring, at least one passage leads through the retaining ring to at least one outlet opening which faces the central opening of the retaining ring and is designed for a machining element in a receiving area. No space is required for the coolant supply between the retaining ring and an assigned lathe.

Abstract: Drilling tools and/or drill bits having notches with buttressed regions and/or notches therewithin to improve notch strength. In some embodiments, the drill/drill bit may comprise a shank comprising a cutting face, the cutting face terminating in a cutting edge. A notch may be formed along the cutting edge, which may be configured to separate chips formed by the drilling tool during operation. A buttressed region may be formed within the notch and may terminate along the cutting edge. The buttressed region may expand a size of the notch in one or more dimensions.

Abstract: A cutting tool and method of manufacturing a tool including determining desired flowrates to cutting edges. The method includes calculating pressure drop and passage dimensions for each of an nth-number of passages to the cutting edges based on In=(Pn*Ann)/(?n*Ln), wherein In is nth-passage flow rate, Pn is nth-passage pressure drop, Ann is nth-passage cross-sectional area raised to a power n, the power n being equal to 1 or 0.5, ?n is nth-passage resistivity, and Ln is nth-passage length. The method includes forming the nth-passages in the tool open to each cutting edge based on the nth-passage dimensions.

Abstract: A method of joining a plurality of parts to form a unitary body. At least two sintered parts are provided. At least one of the sintered parts has at least one internal channel. Each of the parts is formed of a hard metal composition of material. The at least two sintered parts are assembled into the shape of a unitary body. Each of the at least two sintered parts has a joining surface and when each joining surface is brought into contact the surfaces form a bonding interface therebetween. The assembled parts are subjected to a vacuum or gas atmosphere, without the application of external pressure, and to a temperature sufficient to fuse the at least two sintered parts together at the bonding interface to form the unitary body.

Abstract: A device for internal chips cutting machining in a bore having a unit for breaking up chips by internal chip cutting machining in the bore. The device includes a principal element with a longitudinal axis and with at least one movable cutter head with a cutter that can be moved essentially perpendicular to the longitudinal axis of the principal element. The device also includes a mechanism for linear motion. A nozzle for flushing of the cutter fluid on the cutter is located onto and can be moved together with the cutter head. A fluid duct is in connection with the nozzle and has a source for cutter fluid at high pressure.

Abstract: A cutting tool (10) comprises a shank (12) for receiving a cutting insert (14) and a block (16) for delivering a flow of fluid to the cutting insert (14). Fluid is delivered to the cutting insert (14) through a fluid passageway (18) that extends through the shank (12) and the block (16). The block (16) is pivotable mounted on the shank (12). The block (16) pivots about screw (22) between a first and a second position. In the first position the block (16) is held in sealing arrangement with the shank (12) to allow the passage of a coolant through the fluid passage (18) to the cutting insert (14). In the second position the block (16) has moved to allow removal of the cutting insert (14) from the shank (12).

Abstract: A reamer (1) is proposed that comprises a main body (3), that has a first end face (5), in the peripheral face (7) of which grooves (11) are inserted, and that has an inner coolant/lubricant supply including channels (17) which intersect the peripheral face (7) of the main body (3) and thus form outlet orifices (15), and also comprises blades (9) insertable into the grooves (11), wherein the outlet orifices (15) are disposed at a distance from the end face (5) of the main body (3), said reamer being characterized in that a flow channel (19) is created between each two adjacent blades (9, 9?) that is delimited by facing lateral surfaces (21, 31) of the blades (9, 9?) and the peripheral face (7) of the main body (3), the peripheral face being intact between outlet orifices (15) and the end face (5) of the main body (3).

Abstract: A driven tool assembly that uses the cutting tool coolant to also lubricate and cool the driven tool. The driven tool housing has at least one coolant intake port, at least one coolant discharge port, and a shank for mounting the driven tool assembly to a machine tool. An input shaft and an output shaft are rotatably mounted in the driven tool housing, and a transmission transmits power from the input shaft to the output shaft. A seal is disposed between the housing and the input shaft. Typically, at least one passageway fluidly communicates the coolant intake port with the input shaft, the output shaft, the transmission, the bearings, and the coolant outlet port.

Abstract: A milling head has a body, a holding device, a driving axle, a spraying device and a tool adaptor. The body has a base, a rear cover, a front cover, a bearing seat and a middle liner ring. The holding device is connected to the body and has a linking arm, a mounting jacket, a bottom cap, a positioning shaft and a locating spring. The driving axle is rotatably mounted in the body and has a transmission shaft and a driving bevel gear. The spraying device is mounted on the base and has a mounting cover and an spraying ball. The tool adaptor is rotatably mounted in the base below the spraying device and has a transmitting bevel gear, a holding head and a connecting segment.

Abstract: An apparatus for dislodging and removing contaminants from a surface of a machine tool. The apparatus includes an arbor, a vacuum source, a tube, and a cleaning member disposed proximate a distal end of the tube. The cleaning member contacts a surface of the machine tool to dislodge contaminants. The contaminants are drawn through the tube by the vacuum source.

Abstract: In a tool holder, when oil supplied via an oil supply passage and an oil introducing passage reaches an atomizing space, the oil is atomized by an air flow of carrier gas consisting of compressed air, and then water supplied from a water supply passage and a water introducing passage is formed into a water drop in the atomizing space by an air flow of oil containing compressed air to generate the water drop with oil film in which the oil film is formed on a surface of the water drop. Since the water drop with oil film is supplied to a work piece through a top nozzle and an in-tool passage, the water drop with oil film is generated at an extremely close location to a tool, and therefore, responsiveness when supplying the water drop with oil film to the work piece can be enhanced.

Abstract: In a tool holder, when oil supplied via an oil supply passage and an oil introducing passage reaches an atomizing space, the oil is atomized by an air flow of carrier gas consisting of compressed air, and then water supplied from a water supply passage and a water introducing passage is formed into a water drop in the atomizing space by an air flow of oil containing compressed air to generate the water drop with oil film in which the oil film is formed on a surface of the water drop. Since the water drop with oil film is supplied to a work piece through a top nozzle and an in-tool passage, the water drop with oil film is generated at an extremely close location to a tool, and therefore, responsiveness when supplying the water drop with oil film to the work piece can be enhanced.

Abstract: A tool holder of a machine tool, wherein a holder rear end part is fixed to the front end part of the spindle of the machine tool, a tool receiving surface part (8d) for receiving the rear end face of a shaft-like tool (11) fixed to a holder front end part so that a closed space in contact with the rear end face can be formed and mist cutting fluid passages (8f, 9c) for leading mist cutting fluid fed from the front end part of the spindle to the closed space (12) are formed in a holder body at a center of rotation, and exhaust passages are formed for opening a part of the tool receiving surface part in contact with the closed space (12) to the atmosphere, whereby even when the shaft-like tool (11) is small in diameter and the amount of the mist cutting fluid flowing out to the atmosphere through a passage hole (11a) in the shaft-like tool is small, the liquefied cutting fluid can be prevented from being accumulated in the mist cutting fluid passages by maintaining the flow velocity of the mist cutting fluid i

Abstract: A tool holder assembly for a cutting tool. The tool holder assembly includes a tool holder, a locating member, and a spring. The spring is configured to bias the locating member to engage the cutting tool to inhibit fluid leakage.

Abstract: A machine tool capable of jetting atomized lubricant (h) forward from the tip of a cutter (17), characterized by comprising a lubricant jetting state detector for detecting the jetting state of the atomized lubricant from the tip of the cutter, the lubricant jetting state detector further comprising a guide member (21) having a straight inner hole (21a), wherein a light detection device for detecting the degree of transmission or reflection of the detection light due to injecting the direction light (c) to a specified position (b) inside the inner hole through a transparent member installed on the peripheral wall portion of the guide member or through the transparent peripheral wall portion of the guide member, and a fluid feed device (23) for feeding clean fluid of rather thin layer flowing in a specified direction along the longitudinal direction of the inner hole is installed near the inner surface of the transparent member or so as to cover the transparent peripheral wall portion, whereby a defective part

Abstract: A spindle device of a machine tool capable of stably injecting atomized cutting fluid from the tip of a tool device 13 when a variation in fluidity of the atomized cutting fluid occurs temporarily in atomized cutting fluid passages e1, e2 or the supply of the atomized cutting fluid into the atomized cutting fluid passage e1 is stopped and restarted, wherein the atomized cutting fluid passages e1, e2 having a single passage cross section are formed in the area ranging from the spindle 1 to the tip of the tool device 13 through the atomized cutting fluid passages e1, e2, and a vacant chamber group transmission layer part 14 having a large number of vacant chambers 142 stacked thereon in multiple stages or in the state of communicating with each other and allowing the atomized cutting fluid to pass therethrough through the groups of the vacant chambers 142 is formed in the atomized cutting fluid passage e1 or e2.

Abstract: The wasting of cutting fluid mists and contamination of a machining environment with cutting fluid mists are prevented by feeding optimum amounts of cutting fluid mists in a variety of machining operations.

Abstract: A main shaft device for machine tools designed to prevent the wasting of cutting fluid mists and contamination of a machining environment with cutting fluid mists by feeding optimum amounts of cutting fluid mists in a variety of machining operations, comprising a mist feed tube (14) disposed in the rotational center of a main shaft (2) driven for rotation, the front of the mist feed tube (14) being inserted in the rotational center of a tool holder (8) fixed to the front of the main shaft (2) to ensure that the cutting fluid mists flowing out of the front end of the mist feed tube (14) spout from the front end surface of a cutting tool (17) fixed to the tool holder (8), via a mist passageway (h1) in the tool holder (8), the main shaft device being characterized in that the mist feed tube (14) has an adjusting nozzle member (16) removably fixed to the front thereof for controlling the flow rate of the cutting fluid mists flowing out of the feed tube (14) into the mist passageway of the tool holder (8).

Abstract: The invention relates to a method for the cutting or shaping working of metallic or ceramic workpieces and the use of a preferably submerged tool, whereby during the machining process a cooling agent, comprised at least mostly of carbon dioxide (CO2), is supplied to the working position. The invention further relates to a tool for carrying out said method. According to the invention, the cooling in particular of submerges tools may be improved, whereby liquid CO2 under pressure is supplied internally through the tool and released from the tool in the direct vicinity of the actual machining position, expanding through a pressure drop to atmospheric pressure, to give a cooling flow, comprising cold gas and ice particles.

Abstract: Proposed is a tool with a tool insert (53) for machining workpieces, comprising a collet (2), designed for manual interchange of tools and for securing in position the tool insert (53) in a tool spindle (89), comprising at least one channel, penetrating essentially in the axial direction of the tool (1), in particular the collet (2), for mediums, in the particular for coolants and/or flushing agents and/or lubricants. The tool is characterized in that a second channel (7, 7′), which is separated from a first channel (5) and which runs essentially in the axial direction, is provided for mediums, in particular for coolants and/or flushing agents and/or lubricants in the collet (2), and that different mediums can be conveyed in the channels (5) and (7; 7′); and that they empty into a mixing device (85).

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 device (5). The control device (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 device (5c) from the automatic supply control section (5b).

Abstract: There is provided a machine tool apparatus provided with coolant supply passages for supplying a coolant in tools or tool mounts for mounting the tools. An oil coated water droplet generator/mixer is connected to the beginning end of the coolant supply passages, and a spray port having a smaller inner diameter than that of the coolant supply passages is connected to the termination end of the coolant supply passages such that the oil coated water droplets generated in an atomized state by the oil coated droplet generator/mixer flow in a liquid state through a coolant supply passages while having a droplet shape on a surface of which in the greater part of oil coated water droplets an oil film is formed and are sprayed again in an atmized state from the spray port.

Abstract: A spindle device of a machine tool capable of preventing coolant mist from being excessively liquefied in an area between a mist outlet member 23 and near the rear end part of a tool 29, wherein a straight feed pipe 14 formed of a double tube having an inside tube 14a and an outside tube 14b is inserted into an inside hole formed at the center part of a spindle 2 in non-rotating state not coming into contact with the spindle, coolant is fed to the inside tube 14a, compressed air is fed to the outside tube 14b, and a mist generating member 16 is formed of both tubes near the inside tip part of the spindle, a mist outlet member 23 is installed into the outside tube 14b integrally with each on the mist outlet passage c of the mist generating member 16 so as to surround the mist outlet passage and a mist guiding extension member 24 allowed to reach near the rear end part of the tool in the center hole of the tool holder is installed, integrally with the spindle, on the other tool holder 8 side, and the mist guidi

Abstract: A method and apparatus for directing a coolant stream onto a cutting tool is made up of a nozzle pivotally mounted on a machine tool, the nozzle being automatically adjusted in response to movement of the machine tool via a retractable plunger or other linear drive member so as to cause the coolant stream to intersect the interface between a workpiece and each cutting tool that is brought into cutting position on the machine tool; and the nozzle is pivotal between a reference position and a different intermediate position corresponding to the length or diameter of the cutting tool which is advanced into cutting position.

Abstract: A tool design methodology is provided for high speed machining tools for titanium alloys. The methodology includes providing a predetermined cutting criteria such as cutting speed and cutting depth. The geometry of the tool and work piece is modeled and discretized into desired sections. Cutting parameter such as instantaneous chip load per section and three dimensional forces per section are calculated. The heat parameters are calculated such as the heat generated on the shear and friction surfaces and the heat transfer across the work piece and tool interface. The temperature at the tool and work piece interface is calculated and the coolant parameters are adjusted to reduce the temperature at the interface. Coolant parameters may include the coolant flow angle relative to the interface, coolant impingement pressure at the interface, and the coolant flow rate at the interface.

Abstract: A spindle device of a machine tool capable of stably injecting atomized cutting fluid from the tip of a tool device 13 when a variation in fluidity of the atomized cutting fluid occurs temporarily in atomized cutting fluid passages e1, e2 or the supply of the atomized cutting fluid into the atomized cutting fluid passage e1 is stopped and restarted, wherein the atomized cutting fluid passages e1, e2 having a single passage cross section are formed in the area ranging from the spindle 1 to the tip of the tool device 13 through the atomized cutting fluid passages e1, e2, and a vacant chamber group transmission layer part 14 having a large number of vacant chambers 142 stacked thereon in multiple stages or in the state of communicating with each other and allowing the atomized cutting fluid to pass therethrough through the groups of the vacant chambers 142 is formed in the atomized cutting fluid passage e1 or e2.

Abstract: A method of machining metals, by effecting relative movement between a work piece and a tool having a cutting edge to cut the work piece and produce a chip, including injecting a high pressure jet of cooling liquid into the cutting zone during machining, the jet being at a pressure of at least about 5,000 p.s.i. The jet is preferably injected between the chip and the rake face of the cutting tool, and the trajectory of the jet is offset from the rake face of the cutting tool by a small amount and the jet is aimed at the cutting edge of the tool.

Abstract: Atomized water is produced by an atomizer mounted on a drilling device and introduced through a mist flow passage formed in a hollow drill. By applying the atomized water flowing from the atomizer to a cutting bit at the leading end of the drill through the mist flow passage, the cutting bit heated and reaching a high temperature in drilling is cooled. Thus, a rigid material of concrete or the like can be efficiently drilled without being stained with wetting.

Abstract: A tool holder (32) includes a rotary portion (36) securable in a spindle (20) of a machining center (10). A pumped flow of primary coolant (16) is delivered through spindle (20) and rotary portion (36). A pumped flow of secondary coolant (22) is delivered to a static connection (26) and through the static portion (34) of the tool holder. A tool guard assembly (42) secured to static portion (34) surrounds an installed superabrasive grinding wheel (66). It also includes flow paths (50, 52, 98; 62, 68, 82 84) and nozzles (70, 80, 86, 94) to direct coolant to pre-established directions. The tool may be installed automatically in a multipurpose machining center with no additional set up time required.

Abstract: A nozzle retention system for a drill bit which includes a nozzle member which is retained by means of a keyway in the bit body. The bit body can include a partially cylindrical bore, truncated by opposing walls to form a lower contact surface within the bit body. The nozzle will be conformed to pass through the bore in a first orientation, and to be retained in the bore and against such contact surface when the nozzle is rotated to the second orientation.

Abstract: A chuck for a cylindrical rotary metal cutting tool, such as an end mill, is provided with a liquid coolant system. The chuck is constructed to direct cooling liquid onto a cutting tool secured in an axial bore defined therein with a plurality of converging liquid streams directed at the tool. The chuck is constructed with alternative passageways. Liquid coolant may be directed along a central, axial cooling liquid passageway remote from a transverse end face of the chuck. Liquid may pass radially outwardly therefrom through radial bores and into intersecting longitudinal cooling liquid distribution ducts which are inclined toward the axis of the tool holder and which terminate in outlet ports in the end face. The radial bores are plugged at locations radially outwardly from the intersection of the ducts with the radial bores.

Abstract: A method and apparatus for machining a workpiece such with an insert having a surface terminating with a cutting edge includes a tool holder adapted to mount the insert, which is formed with coolant delivery passageways terminating in a discharge orifice lying atop the exposed surface of the insert for ejecting high velocity coolant across the insert and beneath the chips formed from the workpiece. The discharge orifice of the tool holder is spaced within a critical range from the cutting edge of the insert clamped therein. The coolant is ejected from the discharge orifice at a velocity within a critical range and the tool holder is advanced in the cut at a feed rate within a critical range in practicing the method of this invention.

Abstract: A bit for a core drill of the type for drilling a chamfered hole in an article has a dynamic cooling fluid flow directing element for cooling the bit and article surfaces during drilling and chamfering of the article.

Abstract: The present invention includes an insert securably mountable within the chamber of a core drill, such as a chamfering diamond core drill used for drilling and chamfering glass articles. The insert preferably includes a first diverting facility for diverting a first portion of a lubricating/cooling fluid from within the core drill to the inner drilling surfaces of the core drill, and a second diverting facility for diverting a second portion of the lubricating/cooling fluid to the outer drilling surface and chamfering surface of the core drill, to prevent thermal damage to the article being drilled and chamfered, during both the drilling and chamfering steps. The present invention further includes a method of lubricating/cooling an article during drilling and chamfering operations with lubricating/cooling fluid from within the core drill, to prevent thermal damage to the article being drilled.

Abstract: A method of cleaning a machined surface comprises: mounting a chip removing tool having two flow paths for compressed air and cooling water, respectively, on a main spindle of a machining center; and simultaneously jetting out the compressed air and cooling water from a mutual outlet, thereby to remove chips attached to a machined surface of a workpiece.A chip removing tool, for use in the above method, which includes a rotatable body attachable to a main spindle of a machining center, has a casing and compressed gas and liquid supply in the casing.

Abstract: A coolant system for use with a cutter of the type having a vertically disposed rotatable cutter wheel for cutting metallurgical samples and other objects. Such a cutter has a motor-driven rotatable abrasive or metal cutting wheel or blade, and a workpiece holder which holds a specimen workpiece from which a section is to be sliced off. Either the cutter wheel or the workpiece holder is movable to bring the workpiece into engagement with the cutter wheel. The coolant system is combined with a blade guard which covers a major portion of the rotatable cutting blade for safety reasons, and the coolant system distributes a coolant fluid in an advantageous manner onto the center of the vertically disposed rotating cutting blade on both sides thereof so as to bathe the workpiece over the entire cutting area. The coolant system is primarily intended for use with a cutter of the type where the workpiece is moved into engagement with the cutter wheel during a cutting operation.

Abstract: A threading tool is disclosed featuring the combined utilization of a multi-toothed thread chaser insert with a single point indexable thread chaser insert. In generating a desired thread form, successive teeth of the multi-toothed chaser perform the initial cutting passes on a workpiece, while the tooth of the single tooth chaser performs the final finishing cutting operation.

Abstract: A contrivance for the machining of cylindrical surfaces on metal-cutting lathes in a housing whereof there are contained a tool head with at least one tool, a head with deforming rollers, and a system for feeding coolant-lubricant to the tool and deforming rollers. The system for feeding coolant-lubricant incorporates a chamber which is located inside the housing between the tool head and the head with deforming rollers, communicates with a source of coolant-lubricant, and is also connected to the tool head with deforming rollers through at least one nozzle arranged so that the jet issuing therefrom is aimed at the cutting edge of the tool.

Abstract: A portable lightweight drill assembly is mounted against one side of a sheet of flat glass having a hole or crack to be repaired; the drill shaft extends through the hole or crack to mount cutters on both sides; the cutters are spring biased against the glass to exert equal cutting force and simultaneously rotatable with the drill shaft to cut the hole from both sides to a diameter larger than the hole to be repaired, for insertion of a glass repair plug.

Abstract: A pouring ladle is mounted on a carriage which is movable along a track by a motor drive coupled thereto through an overrunning clutch. Movement of the carriage along the track is interrupted at a predetermined position to align the tap hole of the ladle with a rotating reaming tool. The reaming tool is axially advanced into the tap hole for reaming and then retracted and the carriage is released for continued movement along the track. The reaming tool is a hollow tubular body having a longitudinal relief slot penetrating the side thereof and an annularly shaped reaming head is concentrically and removably secured to the forward end of the body and air is fed forward under pressure into the rearward hollow end of the body for cooling and clearing of reamed cuttings.

Abstract: A rotary drill bit having a plurality of journal-mounted rotating cutters and jet passageways through which drilling fluid is discharged between the cutters is provided with removable nozzles for air or other drilling fluid. The nozzles are provided with a peripheral groove and secured in place in said passageways by the divided ends of a bifurcated retaining pin.

Abstract: A crankshaft which is composed of a plurality of individual elements. Each of said elements comprises a crankshaft section with an end face and bearing surface means and also comprises a main shaft journal section with an end face and with bearing surface means. The end faces of pin sections to be connected to each other are electron beam welded together after centering pins have been inserted in bores arranged in, and perpendicular to the end faces to be welded together.