Abstract: A method for dust-free cutting of rotating a cutting blade at a predetermined rotational speed to create turbulent flow of air on the face of the cutting blade, directing a liquid coolant against the face of the cutting blade whereby the coolant is dispersed on the spinning blade and captures or entrains the dust particles created and converts the same a harmless slurry.

Abstract: The present invention relates to a machine tool system and a machining liquid supply device for machining a workpiece by a tool such as a grinding wheel or a milling cutter, and solves the problem of how to supply the machining liquid optimally to an area where the tool engages with the workpiece. In order to solve this problem, the present invention is so configured that during the machining of a workpiece with a tool (T) detachably mounted on a spindle (12) of a machine tool (MT), the machining liquid supply device (18) for supplying a machining liquid to a machining area of the tool (T) is provided with an opening end at the forward end of a machining liquid supply nozzle (20), and can give the movements in a radial direction and a circumferential direction through 360° with respect to the axis of the spindle (12) about the spindle head (12) having the spindle (12) through a rotational supporting body (16) by means of linear movement means (80) and rotating movement means (30), respectively.

Abstract: A coolant apparatus for a chainsaw sharpener for improving the performance of a chainsaw sharpening tool. The coolant apparatus for a chainsaw sharpener includes a coolant support structure including a ledge, an upper back wall, a lower back wall, a bottom wall, side walls, a front wall, and a trough; and also includes a pump member being securely attached to the coolant support structure and being disposed in the trough; and further includes a flexible tubular member being connected to the pump member; and also includes a valve member being connected to the flexible tubular member; and further includes a jointed flexible tube having a nozzle at an end thereof and being connected to the valve member for directing coolant to a chain cutter-tooth being sharpened.

Abstract: An apparatus and a method for retaining moisture on a polishing pad in chemical mechanical polishing during machine idling, i.e. during machine maintenance or repair are described. The apparatus is constructed of a circular disc in a clam-shell configuration having two halves for easy mounting or dismounting from a polishing pad. The circular disc may further include a protruded top portion to accommodate a polishing head when the chemical mechanical polishing apparatus is in a stand-by mode. The circular disc should have a diameter sufficiently large to cover an entire surface area of a polishing pad, while a peripheral edge of the circular disc overlaps a periphery of the polishing pad. The apparatus further includes a moisture retention means mounted on an inner surface of the circular disc for providing a moisturizing environment to the surface of the polishing pad. The moisture retention means can be suitably provided in brushes formed of moisture retaining bristles or in a cellulosic material layer.

Abstract: A grinding tool for grinding buttons of a rock drill bit includes a spindle having a longitudinal axis of rotation, and a grinding cup mounted on the spindle by a tongue-and-socket connection. A fastener in the form of a coil spring secures the grinding cup to the spindle. The grinding cup can be inserted into the inside of, or around the exterior of, the coil spring. When the spindle is rotated in a working direction, the spring tightens against the grinding cup. To install or remove the grinding cup, the grinding cup is rotated relative to the spindle in a direction corresponding to the working direction, whereby engagement between the grinding cup and the coil spring becomes loosened.

Abstract: A grinding wheel comprises an annular base and a grinding stone means mounted on the under surface of the base. A coolant pool which is open inward in a radial direction is formed in the inner surface of the base.

Abstract: Disclosed is a clog-free drain system installed in a cutting apparatus. The system includes an expandable cover for covering a path which a chuck table follows, a water case for receiving used machining water guided by the expandable cover, and a drain pool for tentatively storing the used machining water from the water case before allowing it to drain off. The drain pool has its bottom positioned at a level lower than the bottom of the water case, and the drain pool has its drain outlet formed at a level higher than the bottom of the drain pool. The water case has water flow creating apparatus for driving the used machining water to the water pool.

Abstract: A machining device includes a tool with a rotational axis and porous material with an outer peripheral surface disposed about the rotational axis and adapted to machine a surface of a workpiece. The machining device further includes a fluid delivery device oriented relative to the tool to disperse fluid to contact the tool primarily at a location inboard from the outer peripheral surface of the tool such that dispersed fluid is capable of flowing through the porous material. The machining device provides a controlled radial discharge of fluid at a workpiece surface in use. Methods of machining a workpiece are also provided.

Abstract: A machine having a tool engages a workpiece to perform an operation includes a housing having an adapter secured thereto for supplying lubricating fluid. The adapter includes a split ring type mounting portion that engages the housing of the machine. The adapter further includes a lubrication conduit portion that is secured to or formed integrally with the mounting portion. The lubrication conduit portion has an inlet port formed therein that communicates with one or more outlet ports. When the mounting portion of the adapter is secured to the housing of the machine, the tool is located adjacent to the outlet ports of the adapter. A workpiece can then be engaged by the tool to perform the operation. A source of lubricating fluid is connected to the inlet port such that lubricating fluid can be sprayed from the outlet ports of the adapter directly into the region where the workpiece is engaged by the tool for reducing friction and heat during the operation.

Abstract: In a method and an apparatus for supplying coolant in a grinding machine while the grinding machine grinds, a cooling nozzle and a cleaning nozzle are mounted on a moving member, and the moving member is moved in a direction identical with a first normal line, relative to the grinding wheel, at a first predetermined angle away from a reference straight line perpendicular to an axis of a main spindle. The reference straight line passes through a grinding point. Accordingly, the cooling nozzle injects the coolant with an injecting outlet port directed in a direction of a tangential line, of the grinding wheel, passing through the grinding point. The cleaning nozzle injects the coolant with an injecting outlet port directed in a direction of a normal line relative to the grinding wheel.

Abstract: The invention provides a blasting apparatus with a dual structure deflector. The blasting apparatus includes a blasting cabinet for housing a work piece, a nozzle, a propelling device, and a blasting medium holding unit. In use, the propelling device directs air and blasting medium via a blasting path against a work piece. In one aspect, the dual structure deflector is positioned inside the blasting path and includes an interior structure, an exterior structure, and a tubular support. The interior structure may be made from a rigid material such as steel, aluminum, or another metal. The exterior structure may be made from a resilient material such as polyurethane. The dual structure deflector provides a rigid and impact-resistant configuration.

Abstract: Disclosed is a grinding fluid supply device of a lens grinding apparatus. The grinding fluid supply device includes first grinding fluid supply means for supplying a grinding fluid in a tangent direction of a circular grinding wheel, which has a grinding surface formed on its circumferential surface, with an interval above a grinding surface and allows an upper portion and a rear side portion of the grinding surface to be covered with a curtain of the grinding fluid spaced from the grinding wheel when a processed lens is subjected to a grind processing with the grinding surface of the grinding wheel by rotatively driving the grinding wheel around an axis; and second grinding fluid supply means for insufflating the grinding fluid to the grinding surface.

Abstract: A rotary union is provided for chemical/mechanical polishing of silicon wafers, especially silicon wafers containing chemically sensitive integrated circuit structures. A rotary union is provided with a union rotor and union stator, coupled at the free end of a support spindle carrying a CMP polishing table. In the preferred embodiment the rotary union is joined to a coolant union forming the lower end of the support spindle. A passageway through the union rotor extends past the bottom end of the coolant union rotating part to avoid contact of fluid transmitted through the passageway formed in the union rotor, with the rotating part of the coolant union.

Abstract: A rolled plate joining apparatus for joining rolled plates by cutting one surface of the tailing end of a preceding rolled plate and the other surface of the leading end of a succeeding rolled plate while traveling in the width direction and by overlapping the resulting cut surfaces to be joined. The joining apparatus includes machining apparatuses each having a cutter for cutting the undersurface of the tailing end and the upper surface of the leading end, a traversing apparatus for running said machining apparatuses in the plate width direction to move said machining apparatuses to waiting positions outside of the plate width, and cutter cooling apparatuses provided in said waiting positions for cooling said cutters.

Abstract: The present invention provides a labyrinth seal for use with a workpiece planarization apparatus, such as a chemical mechanical planarization apparatus. In accordance with one aspect of the invention, there is provided a labyrinth seal comprising a member having at least one sloped feature which is configured to inhibit a fluid from traveling into and through the labyrinth.

Abstract: A road surface cutting system capable of cutting a hole into both cold asphalt and dry concrete surfaces towards the deployment and securement of roadway marking devices. The cutting of the surfaces is without lubrication being applied to the road surface and using air to cool the cutting blades.

Abstract: A cylindrical, abrasive grinding wheel having a cylindrical abrasive region with an abrasive surface at an outer circular band thereof. The abrasive region includes layers of abrasive particles. The layers of abrasive particles can be tilted with respect to an axis of rotation of the grinding wheel or they can such that grooving in the grinding wheel and a workpiece ground by the grinding wheel can be reduced. Alternatively, the abrasive region can be formed from a plurality of abrasive segments each having layers of abrasive particles. The layers of abrasive particles can be staggered in the direction of the axis of rotation from one segment to another. This can also reduce grooving in the grinding wheel and workpieces.

Abstract: There is provided a conductive grinding wheel 10 rotating centering on a vertical shaft center and including a horizontal working surface 10a, and the grinding wheel comprises a conductive base member 11 formed of an integrally molded flat plate, and a plurality of fan-shaped segments 12 detachably attached to the base member to entirely constitute the annular working surface. Each segment comprises a base metal 12a directly attached to the base member and a grinding wheel part 12b formed on the surface of the base metal. Moreover, the grinding wheel part comprises a recessed groove 14 for partitioning the working surface into a plurality of working areas 13, and an electrolytic fluid supply hole 15 for directly supplying the electrolytic fluid to the respective working areas, so that the electrolytic fluid is supplied to the respective electrolytic fluid supply holes through the base member.

Abstract: An abrasive tool includes a rotatable hub from which extends a bundle of plastic abrasive monofilaments. The bundle has a high filament count and each filament includes a substantial amount of abrasive uniformly entrained therein. After the bundle is secured to the hub, the tool is placed in a mold completely enclosing at least the projecting bundle and a foamable elastomer is injected into the mold to produce a light density cellular matrix bond encapsulating the filaments. The preferred plastic for the plastic monofilaments is nylon 6-12 and the preferred elastomer is a low density (2-20 lbs/cu/ft) polyurethane. The cellular matrix bond for the preferred applications upon wear does not produce a liquid phase at even high tool pressures. Radially extending enlarged coolant passages may be formed during the encapsulation and injection process step. The tool may be in disk, cup or twisted stem form.

Abstract: A cooling apparatus includes a lubricating fluid tank, a lubricating fluid nozzle, a lubricating fluid regulating device, a cooling fluid tank, a cooling fluid nozzle and a cooling fluid regulating device. The cooling fluid nozzle supplies cooling fluid to the workpiece to enhance cooling effect of the cooling fluid. The lubricating fluid nozzle feeds lubricating fluid to the machining zone to prevent frictional heat generated in the machining zone from raising temperature of the workpiece. Since an appropriate amount of the lubricating fluid within the range helps the cooling effect of the cooling fluid, a quantity of the cooling fluid is reduced within the minimum range of the cooling fluid. A consumption of the lubricating fluid is much smaller than that of the cooling fluid. Therefore, a total amount of the fluids is extremely reduced. The range of flow rates of the lubricating fluid has an upper limit that is preferably approximately 100.0 cm3/h or smaller in 1.

Abstract: In one aspect, an apparatus and a method for use in substrate polishing are described wherein a conditioner head is provided for receiving an end effector for conditioning a polishing pad surface; the conditioner head is supported above the polishing pad surface to be conditioned; and the conditioner head is driven with an actuating force from a position that lies along a line that is substantially normal to the polishing pad surface to be conditioned so that an end effector attached to the conditioner head can condition the surface of the polishing pad. In another aspect, pneumatic pressure is supplied through the conditioner head support arm to apply actuating force to the conditioner head so that an end effector attached to the conditioner head can condition the surface of the polishing pad.

Abstract: An orbiting head is rotatably mounted in the housing. The orbiting head has an axial end with a grinding surface for contact with the workpiece having its surface finished. The orbiting head defines a fluid passage with one end having an opening at the grinding surface. A spindle arbor is connected to the orbiting head and rotates with the orbiting head. The spindle arbor also defines a passage having one end connected to the passage of the orbiting head, and having another end connected to a fluid source. A drive is connected to the spindle arbor for driving the spindle arbor and the orbiting head in rotation. The orbiting head is rotated, and the grinding surface is placed into contact with the surface of the workpiece, and in relative rotation to the surface of the workpiece. Fluid is then moved through the passages from the fluid source to the opening in the grinding surface, and from the opening to an area between the grinding surface and the workpiece.

Abstract: An automotive vehicle body can be sanded with a robotic sanding (polishing) disk that is carried on a robotic head, such that the sanding disk has a relatively constant unit pressure on the vehicle surface as the head moves the sanding disk along the vehicle surface. An automatic supply mechanism can be employed to periodically remove a worn sanding disk from the head, and replace the worn sanding disk with a new sanding disk.

Abstract: A mirror surface grinding method processes an optical glass material into a lens shape using a cup-shaped grinding stone. The grinding stone is pupplied with a polishing solution which contains charged fine particles, thereby electrically attaching the charged fine particles to the grinding stone. The grinding stone is rotated and moved relative to the optical glass material along a final shape to be generated from the optical glass material, thereby grinding an unnecessary portion of the optical glass material to remove it, using a peripheral face portion of the grinding stone, and at the same time polishing the final shape surface of the optical glass material using charged fine particles attached to an annular face portion of the rotating and moving grinding stone.

Abstract: A grinding machine includes a main spindle on which a grinding wheel is mounted, a spindle head movable relative to a workpiece, a dressing device body provided to be movable relative to the spindle head and a dresser supporting member provided to be movable relative to the dressing device body for rotatably supporting a dresser. The dressing device body is moved to a dressing position while the grinding machine grinds with continuous dressing. The dressing device body is moved to a retracted position while the grinding machine normally grinds except for the grinding with continuous dressing.

Abstract: The present invention provides a method for machining hard materials using the machining fluids containing long chain alcohol in which the machining fluid is applied to a machining tool and then lubricates the machining of the workpiece by the machining tool and protects the machining tool during machining. The method is particularly useful when used with machining tools having a Mohs hardness of at least 9 and is most particularly useful when used with diamond machining tools.

Abstract: An apparatus for finishing the edge of a sheet of glass, which includes a supporting structure with a support base, a stationary vertical structure coupled on the support base, and, an upper supporting arm located in a horizontal position on the vertical stationary structure. A motor is connected at one end of the upper supporting arm. Grinding means are connected to the motor fort finishing or grinding the edge of sheet of glass. A housing for housing the grinding means, which includes a fixed upper section and a removable lower section. A longitudinal groove is made in the housing for the introduction of the edge of the glass sheet to contact with the grinding means in order to finish the edge of the glass sheet. Cooling means are located within the housing for cooling the periphery, lower and upper sections of the grinding means during the finishing of the edge of the glass sheet.

Abstract: A work machining method including ejecting a mist of cooling water on a face side of an outside diameter tool from a nozzle of a cooling water supply tube and ejecting a mist of oil cutting fluid on a flank side of the outside diameter tool from a nozzle of an oil cutting fluid supply tube, the nozzle of the cooling water supply tube and the injection nozzle of the oil cutting fluid tube being mounted on a turret. With such a method, durability of the machining tool and the finishing accuracy of the machined surface can be improved and no environmental problem is caused.

Abstract: The invention relates to a workhead for mechanical working of materials. This invention is directed to metal working machines and is adaptable for use in the mechanical working of metals and plastics, involving the use of liquid lubricants and/or coolants. The technical result achieved by implementing the invention comprises an improvement in the efficiency of the cavitation treatment of a liquid lubricant and/or coolant, which secures the dispersion of a solid lubrication in aqueous solutions, an increase in the stability of water-in-oil emulsions, decomposition of a liquid lubricant and/or coolant and a decrease of viscosity, an improvement in corrosion resistance, reduction in a tool wear and, simultaneously, an improvement in the quality of a working surface. The apparatus comprises a housing (1), inside which is fitted a main oscillator (2), to which is connected a tool (4) through the intermediary of an extension piece (3).

Abstract: Disclosed is an improved method of forming a series of hills and valleys alternately arranged at a predetermined pitch on the surface of a given workpiece. It comprises the steps of: carrying out a first grinding on the workpiece with a saw-toothed grindstone having a series of hills and valleys alternately arranged at “N” pitches (“N” being two or more integer or whole number), the height measured from the bottom of the valley to the peak of the hill in the saw-toothed grindstone being taller than the corresponding height in the workpiece; moving the saw-toothed grindstone and/or the workpiece one pitch relative to each other to carry out a second grinding on the workpiece; and repeating the relative movement of one-pitch long-distance and sequential grinding until the final “N”th grinding has been finished. All grindings are effected while the workpiece is being cooled by cooling water.

Abstract: Processing, such as grinding or cutting, in a cold air blast is performed at low temperature with higher precision and higher efficiency in a pollution-less situation, wherein a conventional processing fluid is not applied. A compressed dry cold air of a temperature of minus 30.degree. C. or lower is blasted to a processing spot during processing, while a pollution-less fine mist of an oil, such as Accu-Lube, is supplied to the surface of a grinding stone in a small amount, or with a processing tool which has been treated in a fixed lubrication treatment. The apparatus includes a cooler for cooling a temperature of a filtered, compressed, dry air to minus 1.degree. C. or lowers a cold air blasting unit for supplying the cooled dry air to a processing spot, and a device which supplies a mist of a pollution-less oil, such as a vegetable oil or the like, to the processing spot directly or indirectly by the help of the processing tool.

Abstract: A surface treating device is provided for rotating a primary surface treating arrangement supplied with a surface treating material relative to a working surface. A driving mechanism is provided for rotating the primary surface treating arrangement including a driven output tube operably connected to the primary surface treating arrangement. In the preferred embodiment, an auxiliary surface treating arrangement is spaced inwardly of the output tube and is non-rotatably mounted on the driving mechanism. The auxiliary surface treating arrangement includes a manually actuated pump slidably mounted relative to the output tube for controllably delivering a supply of the surface treating material to the primary surface treating arrangement.

Abstract: Button inserts of a rock drilling bit are ground by positioning a grinding cup against each button insert and rotating the cup while supplying flushing fluid thereto. The flushing fluid is conducted through an axial bore of a spindle on which the grinding cup is mounted. An inner end of the spindle is mounted for rotation in a grinding head, and is rotated by a drive mechanism disposed within the grinding head. Flushing fluid is supplied to the axial bore through a flushing head mounted on the spindle at a location outside of the grinding head. The flushing head has axially spaced parts that are movable axially relative to one another under the force of flushing fluid passing therethrough, in order to establish a fluid seal.

Abstract: A universal grinding machine, particularly for the grinding of tools, having a tool magazine in which a plurality of grinding tools, together with coolant supply devices which are matched thereto, are disposed in holders and can be supplied according to choice to the grinding spindle, where the grinding tool and its coolant supply device are introduced into their receivers; simultaneously by an axial movement of the grinding spindle and of the grinding spindle slide and are withdrawn by a movement of the grinding spindle and of its grinding spindle slide perpendicular to the grinding spindle axis so that the grinding tool and the coolant supply device are always in a position in relation to each other which is correct for machining.

Abstract: The material removal rate of a creep-feed grinding operation may be increased significantly by use of a type of porous grinding wheel in combination with jet of coolant liquid at high pressure directed at the periphery of the wheel in advance of the cutting point. The apparatus for performing the method may comprise a multi-axis machining centre adapted to enable the coolant nozzle(s) to be retracted to provide working clearance for automatic tool changer operation and to re-position the aiming point of the nozzle(s) over an angular range relative to a cutting point.

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: Apparatus for maintaining the condition of cutting fluids in a machine tool sump and for the removal of tramp oil from the cutting fluid has a pump to draw cutting fluid from the machine tool sump and transfer the fluid to an auxiliary tank where the fluid outlet is directed to drive a turbine wheel for rotation of a shaft and simultaneously aerate the cutting fluid. Drums on the shaft are partially submerged so as to be wetted by the tramp oil content. Wiper blades bear against the drum surfaces to strip the tramp oil from the drums as they rotate. A collecting trough is positioned below the wiper contact line to receive the tramp oil as it is stripped from the drum and drain it off to a waste container. In this manner, the cutting fluid is in constant circulation, even when the machine tool is idle.

Abstract: A wafer sawing apparatus scribes a wafer having a plurality of ICs which are separated from each other by a plurality of scribe streets so as to cut the wafer into individual ICs. During scribing, silicon particles are produced and heat is generated as the scribing blade abrades the wafer surface. These silicon particles may remain on the surface of the ICs and cause defects in later manufacturing processes. Therefore, the wafer sawing apparatus has two side nozzles, one positioned on each side of the scribing blade to spray a washing solution onto the scribing blade and a top surface of the wafer through an arc having a designated angle, and a center nozzle which is positioned adjacent to and ahead of a cutting edge of the scribing blade in the driving direction, which also sprays the washing solution onto the scribing blade and the top surface of the wafer at a designated downward angle.

Abstract: In a dry cutting and grooving apparatus for pavement in which blades for cutting or grooving the pavement are covered by a housing which leaves the lower ends of the blades exposed, and in which chips and cutting powder generated at the time of cutting and grooving operation by the blades are collected by a suction means connected to the housing, air is forcibly supplied to the housing and the dust stored within the housing is quickly scavenged by the air flow toward the suction end. Further, by providing an air supply passage within the main shaft of the blades and discharging the air from the surface and the outer periphery of the blades, the dust within the housing is scavenged in the same manner while the tips of the blades can be cooled by the discharged air.

Abstract: Apparatus for maintaining the condition of cutting fluids in a machine tool sump and for the removal of tramp oil from the cutting fluid has a pump to draw cutting fluid from the machine tool sump and transfer the fluid to an auxiliary tank where the fluid outlet is directed to drive a turbine wheel for rotation of a shaft and simultaneously aerate the cutting fluid. Drums on the shaft are partially submerged so as to be wetted by the tramp oil content. Wiper blades bear against the drum surfaces to strip the tramp oil from the drums as they rotate. A collecting trough is positioned below the wiper contact line to receive the tramp oil as it is stripped from the drum and drain it off to a waste container. In this manner, the cutting fluid is in constant circulation, even when the machine tool is idle.

Abstract: Machining apparatus for machining a workpiece with a machining tool, including a work holder for holding the workpiece, and a cold gas stream supply device including a cooling gas nozzle through which a cold gas stream is supplied to a machining point, and wherein the cooling gas nozzle is provided on the work holder, and the cold gas stream has a temperature lower than an ambient temperature of the apparatus. The apparatus may be a centerless grinding apparatus including a regulating wheel for rotating the workpiece, and a work rest blade cooperating with the regulating wheel to rotatably support the workpiece so that the workpiece is ground by a grinding wheel while the workpiece is held by the work holder between the regulating and grinding wheels. The cooling gas nozzle is desirably positioned such that a distance between the exit end of the cooling gas nozzle and the grinding point is not larger than a diameter of the workpiece.

Abstract: The present invention relates to a grinding cup and a wear part for grinding of cutting inserts of a rock drill bit. The grinding cup is provided to be rotatably mounted in a grinding machine. The grinding cup is provided to perform grinding of cutting inserts of a rock drill bit. The grinding cup comprises a shank, a flush channel, and a wear part having a recess. The grinding cup has a center axis and is provided with vibration dampening means. The wear part is resilient in the grinding cup in at least the axial direction relative to the shank and the vibration dampening means forms contact surfaces with cooperating parts. The contact surfaces have substantially the same radial extension.

Abstract: Lapping or polishing at high speeds with fine abrasive particles offer significant advantages in the speed of lapping, savings of time in lapping, and smoothness in the finished articles.

Abstract: Disclosed is a blade cover in a cutting apparatus comprising a chuck table for holding a workpiece to be cut and cutting means for cutting the workpiece, which comprises a spindle having a rotary blade detachably attached thereto and a spindle housing for rotatably holding the spindle. The blade cover is fixed to the spindle housing on its front side, and it comprises: a rear nozzle assembly for flushing water to the rotary blade on its rear side; a front nozzle assembly for flushing water to the rotary blade on its front side; and blade detecting means for detecting the condition of the rotary blade. The front nozzle assembly is adapted to be put selectively in operative or inoperative position, and the blade detecting means is adapted to be put selectively in operative or inoperative position in unison with the front nozzle assembly. With this arrangement the rotary blade can be changed readily.

Abstract: The unit for polishing the bevels on the edges of glass plates, particularly on a numeric-control machine, comprises a cup grinding wheel for polishing the edge of a glass plate and the like. The particularity of the unit is constituted by the fact that it comprises, inside the cup grinding wheel, at least one opening for introducing a mix of cerium oxide and water and, on the outside of the cup grinding wheel, an interspace which surrounds the cup grinding wheel and is connected to a suction unit.

Abstract: A grinding tool for use with an automatic tool changing system in conjunction with a machine spindle and a source of cutting fluid. A preferred embodiment of the grinding tool includes a tool holder adapted for attaching the grinding tool to a machine spindle, and an attachment structure for placing the grinding tool in fluid communication with a source of pressurized fluid. The grinding tool further can comprise a fluid distribution passageway having a central supply tube formed within the tool holder, an annular space and guide channels formed within the body of the grinding wheel, and a plurality of non-perpendicular fluid delivery openings formed in the grinding surface so that coolant fluids at pressures of 200 psi and greater can be received within the fluid distribution passageway and delivered in a controlled manner toward the grinding surface via the delivery openings for either cleaning the grinding surface, for cooling and otherwise lubricating the workpiece and the grinding tool, or both.

Abstract: An automatic polishing machine for polishing aircraft windows uses pressurized air to create a suction to hold the polishing unit on the aircraft, creates a suction to automatically pick up a polishing pad, which is impregnated with polishing compound, and, using a motor driving through a flexible drive joint, and using X and Y axis step motors, drives a polish head along the aircraft window, polishing the window.

Abstract: A grinding cup includes a wear part having a cavity at its front end, the cavity configured for grinding a button of a rock drill bit. A flush channel extends forwardly through the wear part and terminates at the cavity for conducting a flushing medium thereto. The flush channel is spaced from a center axis of rotation of the grinding cup by a distance greater than 2% and less than 30% of a largest diameter of the cavity.

Abstract: Button inserts of a rock drilling bit are ground by positioning a grinding cup against each button insert and rotating the cup while supplying flushing fluid thereto. The flushing fluid is conducted through an axial bore of a spindle on which the grinding cup is mounted. An inner end of the spindle is mounted for rotation in a grinding head, and is rotated by a drive mechanism disposed within the grinding head. Flushing fluid is supplied to the axial bore through a flushing head mounted on the spindle at a location outside of the grinding head. The flushing head has axially spaced parts that are movable axially relative to one another under the force of flushing fluid passing therethrough, in order to establish a fluid seal.

Abstract: The grinding wheel has its cooling fluid supply system through its own body (1). It has central bores (4) that each open into a side chamber (2) and distribution holes (3) opening out into grooves (11) made in the abrasive deposit (10), preferably alternately inclined. Application to truing wheels made in cubic boron nitride.