Abstract: The invention teaches an environmentally friendly straw and its manufacturing method. The straw includes a tubular body having a through channel inside connecting two openings respectively at two ends of the tubular body, an outer layer surrounding the tubular body between the two openings formed by a leveling machine, an inner layer, as an inner wall of the tubular body, surrounding the channel formed by a honing machine. The straw is manufactured by leveling the tubular body, and honing the channel by a honing machine. As such, a smooth layer between the channel and the tubular body is achieved so that the straw is convenient to clean and use.

Abstract: A mold surface repairing process, the process flow of which is as follows: first sand blasting—defect identification—repairing welding—coarse grinding—semi-finishing grinding—finishing grinding—secondary sand blasting—mold heating—spray paint. The disclosure provides a combination of automatic equipment, special grinding tools and finishing grinding process, which ensures the quality and efficiency of the mold repair and reduces the labor force.

Abstract: The present invention discloses a method for producing a golf club head with an ultra-thin crown, relating to a method for processing a golf club head. A grinding rotor, with an abrasive (2) on the surface, is placed in a to-be-grinded area inside a cavity of the golf club head (1). The outside of the golf club head (1) is provided with a rotary working shaft (6) of high-speed rotation, one end of which corresponding to the grinding rotor is provided with driving magnets (4). The driving magnets of the rotary working shaft (6) are driven by a driving device to make the grinding rotor rotate synchronously so that the grinding rotor that is rotating performs multi-point thinning and grinding to the cavity within the to-be-grinded area of the golf club head (1). The present invention, with advantages of uniform thinning of a golf club head and automation control, is applicable to mass industrial production.

Abstract: A honing machine has at least one clamping unit that clamps a workpiece and has a rotary drive for the workpiece. A spindle unit has a stroke drive for an inner honing tool for inner honing of the workpiece. An outer honing device that is movable relative to the workpiece in an axial direction of the workpiece is provided. The outer honing device has several honing stones and an advancing device acting on the honing stones. The honing stones each are advanced in a radial direction relative to the workpiece. The advancing device has at least one linear drive for each one of the honing stones and a common drive motor for all of the linear drives.

Abstract: An electronic grade synthetic quartz glass substrate is manufactured by machining a synthetic quartz glass substrate to form a recess, channel or step and polishing the bottom and side surfaces of the recess, channel or step to mirror finish by a working portion of a rotary polishing tool while keeping the working portion in contact with the bottom and side surfaces under independent constant pressures.

Abstract: An electronic grade synthetic quartz glass substrate having a recess, channel or step is manufactured by machining at least one surface of a synthetic quartz glass substrate having a maximum birefringence of up to 3 nm/cm in its entirety to form a recess, channel or step, and removing the residual stress due to machining.

Abstract: An object is to provide an internal gear grinding machine and a dressing method for a barrel-shaped threaded tool which make it possible to achieve space savings and reduce the size of a machine by simplifying dressing operation. To achieve the object, an internal gear grinding machine for use in grinding a workpiece (W) by synchronously rotating the workpiece (W) and a barrel-shaped threaded grinding wheel (17) in mesh with each other includes a dressing device (20) for dressing the threaded tool (17) by meshing the threaded grinding wheel (17) with a disk dresser (56). At the time of dressing, the threaded grinding wheel (17) and the disc dresser (56) are operated in accordance with the helix angle and the barrel shape of the threaded grinding wheel (17).

Abstract: A method of manufacturing a tubular structure is implemented by housing a tubular base, which has a side circumference surface formed in a bellows-like shape, in a polishing container, causing magnetic particles to flow along a circumferential direction of the tubular base due to action of magnetic poles, and supplying abrasive particles to the polishing container so that the abrasive particles flow along an axial direction of the tubular base, thereby polishing a surface of the tubular base. The method includes: a first polishing step of polishing an exposed surface of the tubular base by causing the magnetic particles and the abrasive particles to flow while an inner surface of the tubular base remains covered; and a second polishing step of polishing an exposed surface of the tubular base by causing the magnetic particles and the abrasive particles to flow while an outer surface of the tubular base remains covered.

Abstract: Provided is an internal gear machining method capable of achieving improvement of machining accuracy and extension of the tool life by increasing a slip velocity. For this purpose, internal gear machining is performed on a workpiece (W) by synchronously rotating the workpiece (W) and a barrel-shaped threaded grinding wheel (11) in mesh with each other. The workpiece (W) is rotatable about a workpiece rotation axis (C1), and the barrel-shaped threaded grinding wheel (11) is rotatable about a grinding wheel rotation axis (B1) having a predetermined shaft angle (?) to the workpiece rotation axis (C1). In the internal gear machining method, the shaft angle (?) is set large based on the amount of change in a grinding pitch wheel pitch radius of the threaded grinding wheel (11).

Abstract: Apparatus for removing a burr from an aperture in a workpiece, using a rotating deburring tool having a flexible of partly flexible shaft, an abrasive mechanism that rotates on the shaft and a collar that protects the workpiece from abrasion when the abrasive mechanism is being positioned for deburring. Optionally, the shaft and abrasive mechanism move laterally as they rotate. Optionally, a shaft holder includes a protective surrounding sleeve to catch or deflect any fragment of the shaft holder that might fly off. Optionally, the shaft and the workpiece rotate independently of each other. Two or more different abrasive mechanisms can be simultaneously attached to the shaft. The cross-sectional shape of the abrasive mechanism may be curvilinear and/or polygonal, depending upon shape of the workpiece surface. Optionally, a shaft restrictor receives the shaft and limits lateral motion of the rotating shaft.

Abstract: The adhesiveness of a thermal spray coating and a cylinder internal surface is improved by forming a sufficient roughened surface on an internal surface. A processing roller is installed on the main shaft of a processing device via a pressurizing mechanism. An uneven surface is provided on the external periphery of the processing roller. By pressing the processing roller against the internal surface while the roller rotates and moves, a fine unevenness that corresponds to the unevenness of the roller is formed on the cylinder internal surface. A thermal spray coating is formed on the internal surface where the inner surface has been roughened by forming the above-mentioned unevenness.

Abstract: A substrate polishing method includes starting to rotate a circular substrate and polishing an inner peripheral edge surface of a center circular hole formed in the circular substrate into a chamfered or rounded surface by pressing the inner peripheral edge surface against a bypass polishing part of a polishing tape that is conveyed intermittently or continuously and by oscillating the bypass polishing part of the polishing tape about a direction perpendicular to a direction that the center circular hole penetrates through the circular substrate. The polishing tape is guided so as to have an advancing portion advancing toward the circular substrate, a returning portion returning from the circular substrate, and a turning-back portion between the advancing portion and the returning portion guided along a side bypass. The bypass polishing part of the polishing tape is the turning-back portion of the polishing tape.

Abstract: A rotary tool of a honing apparatus is provided with honing grindstones that grind a cylinder bore, and guide members that slide in a guide hole of a tool guide. The guide members are each constituted of a base member fixed to the tool body and a slide member fixed to the base member. The base member is composed of a ceramic material, and the slide member is composed of a cemented carbide material. With the guide members having such a configuration, electrolytic dressing is performed on the honing grindstones.

Abstract: Methods for abrasive cleaning, deburring, providing barrier coatings and sealing leaks in existing pipes, in a single operation, in one pass by intermittent bursts of dry particulates forced and pulled by air throughout the piping system by a generator and a vacuum. Cleaning includes intermittently injecting bursts of abrasive particles into the pressurized gas into the piping system for cleaning pipe interior walls, reducing burrs and interior lips in the pipe interior walls and generating a vacuum suction in the piping system to remove abrasive particles and debris.

Abstract: Curved plastic objects and systems and methods for deburring the same are disclosed. The curved plastic object can be the cap or grill of a headphone or earbud.

Abstract: A method of cutting a workpiece made of a highly-hard material is provided. The workpiece is cut by a machining device including a workpiece holder that holds the workpiece, a spindle device that rotates the workpiece holder, a tool holder that holds a tool, and a relative moving mechanism that relatively moves the workpiece holder and the tool holder at least in two axial directions orthogonal to each other. In the machining device, positioning errors in the axial directions are within 5 nm.

Abstract: A method of deburring channel inlet edges inside a cavity of a gas diffuser case is disclosed. The diffuser case has a plurality of channels each having an inner surface and an inlet edge defining an inlet of the channel. The surfaces of adjacent channels co-operate to provide said inlet edge therebetween. The inlet edges of the channels are provided in an inwardly facing circular array around a central axis of the gas diffuser case. The method comprises: inserting a tool head having at least one nozzle in the cavity of the gas diffuser case; and then ejecting abrasive particles from at least one nozzle towards at least one of the channel inlet edges of the gas diffuser case to at least one of decrease a radius of at least one said edge and improve a smoothness of at least one said surface.

Abstract: A honing tool comprises a tubular tool body fastened with an end section in a tool shank and a cutting region on an opposite end section with at least one honing-stick accommodating opening. The dimensions of the honing-stick accommodating opening and of the honing stick are matched to one another so that the honing stick is accommodated in a radially movable manner, and essentially free of play in a circumferential direction of the tool body, between boundary surfaces of the honing-stick accommodating opening. A play-compensating device between the honing stick and the honing-stick accommodating opening comprises at least one elastically deformable supporting element which is supported with a pressure force, in a fitted state of the honing stick, on one hand on a side surface of the honing stick and on the other hand on a boundary surface, opposite the side surface, of the honing-stick accommodating opening.

Abstract: The present invention incorporates at least one thermoplastic or elastomeric polymer in abrasive flow machining media either as the sole or as one of the polymeric constituents. The presence of thermoplastic polymer imparts a greater elastomer characteristic (elasticity, compression resistance, increased relaxation times) as contrasted with traditional media. Enhanced elastomeric characteristics enable more uniform abrasive machining. In a particularly preferred embodiment, silicone- or polyorganosiloxane-based medium contains elastic silicone rubber particles dispersed therethrough to achieve increased relaxation times comparable to those attainable with the inclusion of a thermoplastic polymer.

Abstract: Apparatus for removing a burr from an aperture in a workpiece, using a rotating deburring tool having a flexible of partly flexible shaft, an abrasive mechanism that rotates on the shaft and a collar that protects the workpiece from abrasion when the abrasive mechanism is being positioned for deburring. Optionally, the shaft and abrasive mechanism move laterally as they rotate. Optionally, a shaft holder includes a protective surrounding sleeve to catch or deflect any fragment of the shaft holder that might fly off. Optionally, the shaft and the workpiece rotate independently of each other. Two or more different abrasive mechanisms can be simultaneously attached to the shaft. The cross-sectional shape of the abrasive mechanism may be curvilinear and/or polygonal, depending upon shape of the workpiece surface. Optionally, a shaft restrictor receives the shaft and limits lateral motion of the rotating shaft.

Abstract: A lapping system includes a shaft. A stabilizing member is coupled to the shaft. A lapping tool is coupled to the shaft and spaced apart on the shaft from the stabilizing member. An adjustable force device is coupled to the shaft, the stabilizing member, and the lapping tool. The adjustable force device is operable to be adjusted in order to cause the stabilizing member to support at least some of the weight of the lapping tool. The lapping system may be coupled to a valve body having a valve face to ensure alignment of the lapping tool and the valve face while providing a controlled, vertical force from the lapping tool to the valve face.

Abstract: A first angular grinding wheel and a straight grinding wheel having rotation axes parallel to each other are arranged on a swivel slide that turns about a turning axis. A reference symmetry plane (MA) that is parallel to a grinding wheel rotation axis and that includes the turning axis and a reference perpendicular plane (MB) that is perpendicular to the reference symmetry plane and that includes the turning axis are defined. A grinding reference point (PA1) of the first angular grinding wheel (TA1) and a grinding reference point (PP1) of the straight grinding wheel (TP1) are arranged asymmetrical with respect to the reference symmetry plane. A distance from the grinding reference point of the straight grinding wheel to the reference symmetry plane is equal to a distance from the grinding reference point of the first angular grinding wheel to the turning axis.

Abstract: A method and brush kit for cleaning and improving the roughness average of aluminum or aluminum coated valve cylinders and other open or blind bores in virtually any type of mechanical device by removing burrs and embedded particles within such cylinders and bores wherein the method provides a kit of a predetermined number of cylindrical brushes having metallic or nylon strands that are coated or impregnated with an aluminum oxide abrasive material. The method is particularly adapted for use by technicians in the automotive, marine, farm, aircraft and the like repair industries for treating transmission valve bores or cylinders and other open or blind bores and the like.

Abstract: A machine controller includes a memory and a processor configured for operating a machine control for automatically controlling apparatus for performing a machining process on a workpiece at least partially as a function of data relating to a parameter of the workpiece, and a gage control for automatically controlling gaging apparatus for collecting and processing the data relating to the parameter of the workpiece and storing the data in the memory. At least a portion of the memory in which the data relating to the parameter of the workpiece is stored, is configured as a shared memory so as to allow the machine control to immediately retrieve and use the stored data relating to the parameter of the workpiece. The controller has particular utility for use in controlling a honing process and a gaging process, which can be in-process or post-process, and which can be used for bore sizing and other parameters.

Abstract: Apparatus for removing a burr from an aperture in a workpiece, using a rotating deburring tool having a flexible of partly flexible shaft, an abrasive mechanism that rotates on the shaft and a collar that protects the workpiece from abrasion when the abrasive mechanism is being positioned for deburring. Optionally, the shaft and abrasive mechanism move laterally as they rotate. Optionally, a shaft holder includes a protective surrounding sleeve to catch or deflect any fragment of the shaft holder that might fly off. Optionally, the shaft and the workpiece rotate independently of each other. Two or more different abrasive mechanisms can be simultaneously attached to the shaft. The cross-sectional shape of the abrasive mechanism may be curvilinear and/or polygonal, depending upon shape of the workpiece surface. Optionally, a shaft restrictor receives the shaft and limits lateral motion of the rotating shaft.

Abstract: According to a method for the fine machining of internal surfaces of bore holes in tools by fine boring and subsequent honing, the following steps are executed: Fine boring of at least one bore hole (131) in a tool (130) by means of a fine boring tool (128) of a fine boring device (120) for the creation of a fine bored hole; Transfer of the tool to a machining position of a honing device (140) for the machining of the fine bored bore hole by means of a honing tool (148A) of the honing device; Measurement of the fine bored bore hole with one of the measurement devices (160) allocated to the honing device in the machining position for the creation of at least one bore hole measurement signal representing the properties of the fine bored bore hole. The fine boring device is controlled subject to the bore hole measuring signal.

Abstract: Apparatus for dispensing abrasive particulate material into a stream of gas, the apparatus comprising: a. a pressurized hopper for receiving particulate abrasive material; and b. a pressurized conveyor coupled to the hopper comprising a housing having an inlet for receiving particulate material from the hopper, an outlet for delivery of particulate material from the housing, and a screw located within the housing for transporting particulate material from the inlet to the outlet. Also provided is a method of dispensing particulate abrasive using said apparatus and a pipe cleaning system including said apparatus.

Abstract: A grinder with built-in grinding agent dispenser includes a driving shank having an adapter end for operatively coupling with a grinder machine for being driven to rotate, a grinding shaft operatively coupling with the driving shank for being driven to rotate, an abrasive arrangement provided at the grinding shaft for refining a surface of a workpiece, and a grinding agent dispenser built-in within the grinder for guiding a flow of grinding agent. The dispenser has a supplying channel connected to a supplying inlet, and a grinding channel connected to a dispensing outlet and communicatively connected to the supplying channel, wherein the supplying channel and the grinding channel are provided within the driving shank and the grinding shaft, so that when the grinding agent is feeding into the supplying channel via the supplying inlet, the grinding agent is guided to flow to the dispensing outlet, so as to disperse grinding agent.

Abstract: According to one embodiment, a supercritical drying method comprises cleaning a semiconductor substrate with a chemical solution, rinsing the semiconductor substrate with pure water after the cleaning, changing a liquid covering a surface of the semiconductor substrate from the pure water to alcohol by supplying the alcohol to the surface after the rinsing, guiding the semiconductor substrate having the surface wetted with the alcohol into a chamber, discharging oxygen from the chamber by supplying an inert gas into the chamber, putting the alcohol into a supercritical state by increasing temperature in the chamber to a critical temperature of the alcohol or higher after the discharge of the oxygen, and discharging the alcohol from the chamber by lowering pressure in the chamber and changing the alcohol from the supercritical state to a gaseous state. The chamber contains SUS. An inner wall face of the chamber is subjected to electrolytic polishing.

Abstract: The invention relates to a method for producing a honed segment bore (5-8) in work pieces (1-4), which each have a segment bore (5-8). The work pieces (1-4) are arranged relative to each other such that the segment bores (5-8) of the work pieces (1-4) are aligned to a common longitudinal axis (9) and a closed circle (12) is formed in a projection along the common longitudinal axis (9). The segment bores (5-8) of the work pieces (1-4) arranged relative to each other are then honed together. An elaborate grinding process can thus be replaced by a honing process, in which a plurality of work pieces (1-4) can be processed simultaneously, thus reducing the cycle time.

Abstract: There is provided a method of polishing the inner peripheral end surfaces of disk-like substrates for a recording medium using a brush comprising, providing a plurality of pieces of disk-like substrates having circular holes at the central portion thereof; bringing a polishing material slurry containing a polishing material into contact with the object to be polished; inserting a polishing brush into the circular hole of the object from a first side of the object to be polished, and rotating the polishing brush with the shaft as a center to polish the inner peripheral end surfaces of the substrates; and inserting the polishing brush into the circular hole of the object to be polished from a second side opposite to the first side and rotating the polishing brush with the shaft as a center axis to polish the inner peripheral end surfaces of the substrates.

Abstract: A method and apparatus for radially cutting tubulars in a downhole environment by emitting acoustic energy into the jet, the acoustic energy having a wavelength selected such that the jet acts as a waveguide, detecting reflected acoustic energy in the jet, and determining the depth of cut from a travel time of the acoustic energy.

Abstract: The honing feed system and method utilizes feedback from various sources during rapid feeding of the honing tool while rotating and stroking, to detect initial contact with a bore surface, to slow the feed to a normal honing rate, involving conditioning the feedback signals to eliminate noise factors such as the stroking movement and forces generated to rotate and feed the tool unopposed.

Abstract: An attachment that is configured for attachment to an arm of a piece of construction equipment. The attachment includes a pair of grapple mechanisms mounted on a main beam. Each grapple mechanism includes opposing grab arms mounted to a grab arm housing. The grab arm housings of the grapple mechanisms are each individually adjustable separate from one another relative to the main beam in one or more directions generally perpendicular to the longitudinal axis of the main beam. The attachment can fine adjust the positions of the pipe ends relative to one another until the ends align with each other, at which point the pipe ends can be welded or otherwise secured to each other while being held in position by the grapple mechanisms.

Abstract: A grinding device includes a fixed barrel, a moving barrel, a grinding plate, and an actuator. The fixed barrel defines a chamber and includes a number of inner surfaces substantially parallel to a central axis, each of which defines a holding groove therein for holding a workpiece. The moving barrel is received in the chamber and includes a side surface substantially parallel to the central axis and defines an installation groove. The grinding plate is fixedly installed in the installation groove. The actuator is configured for driving the moving barrel to spin and move back and forth along the central axis, and driving the moving barrel to move towards a workpiece so that a surface of the workpiece is grinded into a desired arc surface by the grinding plate, and driving the moving barrel to move towards another workpiece after the desired arc surface of the workpiece is obtained.

Abstract: The invention relates to a device for fine machining workpieces, preferably for honing and/or fineboring cylinder bores in crankcases of internal combustion engines, wherein inside a module (1) one or two horizontally displaceable machining units (10, 11, 12, 13) each are provided on two longitudinal sides (2, 3) that are opposite each other for honing and/or fineboring. Each machining unit (10, 11, 12, 13) comprises a spindle (100), a drive for creating the oscillating stroke movement of the spindle (100) and for displacing the machining unit into the working position, a tool holder (8) with a rigid axis, and a feed device (60, 61, 62, 63, 64) for the radial feeding of the machining tools, and between the longitudinal sides equipped with the machining units (10, 11, 12, 13) a service chamber (7) that can be accessed from an end side, wherein at least one tool magazine (30, 31) is associated with the machining units (10, 11, 12, 13) at the rear end side (4) of the module (1).

Abstract: A processing apparatus is provided to surface-finish or otherwise process features of a workpiece, such as a lumen of a stent. The fluid jet apparatus can have a nozzle system and a holder for holding and positioning the workpiece with respect to the nozzle system. A fluid jet outputted from the nozzle system is used to form a desired surface-finish.

Abstract: A grindstone contact sensing technology capable of sensing the contact position of the honing grindstone with the inner circumference of the work at high precision. A servo motor for driving the spindle rotation, and a servo motor for driving the depth of cut are provided and used respectively as spindle rotation drive source for rotating and driving the rotary spindle having the honing tool and depth-of-cut drive source for moving the honing grindstone at a specified depth of cut, and the contact position of the honing grindstone with the inner circumference of the work is sensed from various electrical information (rotating speed, torque, current value, stagnant pulses, etc.) obtained from the operations of both the servo motors.

Abstract: A system and method for cleaning receiver slots with hook-fits for stator blade ring segments. A first cleaning tool with an abrasive coating and sideward projection in the shape of the hook is slid through the slot using the hook-fit as a guide. A second cleaning tool with an abrasive coating and a formed/machined hook-fit used as a guide while cleaning the receiver slots as it is pushed through the receiver slots. The tools remove trash, oil rust/oxidation, and other foreign materials from receiving slot. Both tools may attach to a metal rod with two knuckles as part of the handle that connects to and uses the hook-fit as a guide enabling the operator to reach deep into the radius of the compressor case receiver slots and hook-fits located adjacent to and beneath the rotor and rotor blades so that the hook-fit and receiver slot can be thoroughly cleaned.

Abstract: A system and method for dispensing abrasive particulate material into a stream of air or gas for introduction into a pipe for the purpose of cleaning the pipe and preparing the inner surface for coating or lining. The system comprises an air blower coupled to the pipe, and generates the stream of air or gas, and a three component feed assembly for dispensing the abrasive particulate material. The feed assembly operates at atmospheric pressure and is in fluid communication with each of the pipe and the air blower, and is used to meter the abrasive particulate material into the stream of gas for introduction into the pipe. The system further comprises a shut-off valve that is in fluid communication with the feed assembly, the air blower and the pipe and is cycled to isolate the feed assembly from the air blower during pipe drying and maintenance operations.

Abstract: The end face processing apparatus of the present invention is an end face processing apparatus for processing the cut face of a cut ceramic molded body, which comprises an air blowing outlet and an extraneous material removal member, and is configured to remove burrs remaining on the cut face from the time of cutting as well as powder adhering to the cut face and on the periphery thereof using the extraneous material removal member and air from the air blowing outlet.

Abstract: The invention relates to a machining device (5) comprising a workpiece (8) and at least one machining tool (23, 40, 41) and a measuring device (1, 22) and a seat (20) for the workpiece (8) to be machined. The workpiece (8) has a reference surface (26, 32, 33) that is disposed on the workpiece (8) and interacts with the machining device (5) in such a manner that a contour can be produced on this reference surface (26, 32, 33) using the machining tool (23, 40, 41) and that the contour (34, 35, 50) can be detected by the measuring device (1, 22) after machining. The method for controlling a machining device (5) comprises the following steps: introducing a contour (34, 35, 50) into the workpiece (8) to be machined in the longitudinal direction of advance of the machining tool (23, 40, 41); measuring the contour (34, 35, 50) in the workpiece (8) produced by machining; adjusting the machining plan while taking into consideration the determined tool geometry.

Abstract: The grinding method of a disk-shaped substrate that grinds a disk-shaped substrate including a portion having a hole at the center thereof while rotating the disk-shaped substrate is provided with: grinding an inner circumference of the disk-shaped substrate while an inner circumference grinding device is fed in a radial direction toward an outer circumference of the disk-shaped substrate and grinding the outer circumference of the disk-shaped substrate while an outer circumference grinding device is fed in the radial direction toward the inner circumference of the disk-shaped substrate; and stopping the feedings of the inner circumference grinding device and the outer circumference grinding device at the same time.

Abstract: Apparatus for removing a burr from an aperture in a workpiece, using a rotating deburring tool having a flexible of partly flexible shaft, an abrasive mechanism that rotates on the shaft and a collar that protects the workpiece from abrasion when the abrasive mechanism is being positioned for deburring. Optionally, the shaft and abrasive mechanism move laterally as they rotate. Optionally, a shaft holder includes a protective surrounding sleeve to catch or deflect any fragment of the shaft holder that might fly off. Optionally, the shaft and the workpiece rotate independently of each other. Two or more different abrasive mechanisms can be simultaneously attached to the shaft. The cross-sectional shape of the abrasive mechanism may be curvilinear and/or polygonal, depending upon shape of the workpiece surface. Optionally, a shaft restrictor receives the shaft and limits lateral motion of the rotating shaft.

Abstract: The disk-shaped substrate inner circumference polishing method for polishing an inner circumference of a disk-shaped substrate including a portion having an opening hole at the center thereof includes inserting a brush having a shaft core into the portion having the opening hole of the disk-shaped substrate; fixing one end and the other end of the brush to a pair of rotating shafts that are provided at mutually detached positions and pulling at least any one of the one end and the other end of the brush and applying tension in the axial direction to the shaft core of the brush; and rotating the brush and polishing the inner circumference of the disk-shaped substrate.

Abstract: A tool for removing material from a surface includes a body defining a longitudinal bore and an opening connecting an outer surface of the body to the longitudinal bore. A cutting element comprising a cutting surface is dimensioned to be at least partially received by the opening. The cutting surface is configured to translate from a first position to a second position in response to a centrifugal force. In the second position the cutting surface is extended outwardly through the opening, beyond the outer surface of the body. In one example, the tool may be used to remove material, such as oxidation, from the inner walls of a cylindrical article selected from a pipe and a tube.

Abstract: A tool holder is provided with a main body, a taper cone, a working portion, a coolant flow passage, and an adjuster. The taper cone includes a taper portion and movable in an axial direction of the main body. The working portion is mounted on an outer peripheral portion of the main body and includes a taper bottom surface which engages with the taper portion. The taper bottom surface is movable in a radial direction of the main body based on a movement of the taper cone in the axial direction. A coolant flows through the coolant flow passage such that a part of the coolant presses and moves the taper cone in the axial direction and another part of the coolant flows out to an outside so as to adjust a pressing force. The adjuster is fitted into a hole penetrating the main body and includes a coolant flow-out hole for adjusting a flow-out of the coolant.

Abstract: A micro-concave portion machining method is provided for forming micro-concave portions on an inner circumferential surface of a cylindrical bore form in a workpiece. The micro-concave portion machining method includes performing mirror surface machining and subsequent plastic working on the inner circumferential surface. The plastic working on the inner circumferential surface forms a plurality of recesses with each of the recesses including a micro-concave portion.

Abstract: A method of grinding a slot base of a blade retention slot within a rotor disk includes rotationally aligning a grind wheel about an axis of rotation to align a first notch with a first and second opposed lobe of the blade retention slot of the rotor disk; transiting the grind wheel along the blade retention slot that the first notch is passed between a lobe width defined by the first and second opposed lobe of the blade retention slot; rotating the grind wheel about the axis of rotation; and transiting the rotating grind wheel along the blade retention slot to grind a slot base with a rim of the grind disk, the slot base having a width greater than the lobe width of the blade retention slot. A grind wheel includes a rim having at least one notch formed in the rim to grind a slot base of a blade retention slot within a rotor disk.

Abstract: A process which uses an air jet containing non-abrasive particulate media at a low pressure which selectively removes thermal barrier coatings from components without damaging the metallic substrate. This process selectively removes thermal barrier coatings from the cooling holes of components.