Abstract: This document discloses a system and method for polishing a metal surface, using a grinding machine and a burnishing machine. The grinding machine comprises an arm coupled with a grinding wheel for grinding the internal surface of a workpiece, an arm rotation drive block configured to drive rotation of the arm around its longitudinal axis, an arm movement drive block configured to move the arm longitudinally and vertically, and rollers for rotating the workpiece around its cylindrical axis via friction with an external surface of the workpiece. The arm comprises a fixed main shaft, a universal joint shaft and a head section coupled with the grinding wheel, wherein the head section is configured to oscillate vertically, allowing the grinding wheel to follow up-and-down fluctuations of the workpiece. The burnishing machine is configured to tumble the workpiece including a tumbling detergent and tumbling beads therein.

Abstract: Disclosed is a size-variable wheel deburring device including combined manipulators, a transfer manipulator, a burr brushing system, fixture systems, and so on. Pneumatic fingers grip shanks of retaining pins to bring pin bodies into fit with first retaining sleeves and second retaining sleeves, and retaining lugs with guide grooves. Springs are compressed to cause 90-degree rotation of pin bodies such that retaining lugs come into retaining grooves of the second retaining sleeves. A brush is driven by a driving motor to rotate and elevated by right elevating cylinders to contact with a back cavity of a wheel for deburring. The size-variable wheel deburring device is capable of automatically adjusting the size of the brush and of each fixture according to the diameters of wheels in use, and realizing mixed online burr brushing, and additionally has the characteristics of advanced technique, high automation degree, good universality, and safe and stable performance.

Abstract: Disclosed is a deburring device for a back cavity of a wheel, composed of a machine frame, a clamping and rotating system, a rising and falling translation system and brush units.

Abstract: A three dimensional (3D) definition of a build piece, from which a build plan has been derived, is received. The computer system generates, based on the 3D definition, a processing plan that includes a plurality of robotic instructions to successively orient a build piece created by an additive manufacturing process into successive orientations. The computer system outputs the processing plan for use by a robotic controller.

Abstract: A diffusion plate includes a plate member facing an opening end of a supply pipe with a thickness direction thereof substantially parallel with a supply direction of a supply fluid. The plate member is rotatable around a rotation axis substantially parallel with the thickness direction and has a diffusion hole, penetrating in the thickness direction at a position other than a rotation center of the plate member. The diffusion hole has a wall surface defined at a rear side in a rotation direction and has a first wall surface end defined in a facing surface facing the supply pipe, at a rearmost in the rotation direction and a second wall surface end defined in a non-facing surface at a rearmost in the rotation direction. The wall surface is inclined with the first wall surface end being at a front side of the second wall surface end in the rotation direction.

Abstract: A device for holding a milling and/or grinding machine, particularly hand-held milling and/or grinding machine, in a position for machining an edge at one end of a pipe. The holder device includes at least one rotatable roller which can be laid against the pipe inner side or the pipe outer side and by which a connecting part of the holder device, on which the milling and/or grinding machine can be arranged, may be moved along the edge.

Abstract: A component blending tool for forming a pre-determined blended area into a component utilizes a belt having a material removing surface that is contoured to mimic a predetermined depth ratio of the blended area.

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: The present disclosure defines a hand operated grinding tool for finishing an interface surface of a fluid conduit. The grinding tool includes a fixture having grinding tool yoke and a work piece yoke. A shaft with a tool head connected to one end and an actuator connected to the other end is configured to slide and rotate relative to the grinding tool yoke. The tool head can be configured to engage and finish a surface of a tube and/or a male fitting.

Abstract: A method for preparing a polymer insulated cable including a semiconductive layer surrounding a polymeric insulation layer includes: cutting the semiconductive layer by grinding a circumferential dividing groove in the semiconductive layer using a rotating grinding surface, wherein the dividing groove defines first and second semiconductive sections of the semiconductive layer on opposed sides of the dividing groove; and thereafter removing the second semiconductive section from the polymeric insulation layer while retaining the first semiconductive section on the polymeric insulation layer.

Abstract: An apparatus for at least intermittent metal-cutting machining of a support face of a bearing seat (5) of a concentrically guided shaft (3) with the bearing (4) dismantled is proposed, having at least one cutting tool (1) that is rotationally movable, in particular on a shaft (3) slidingly supported by bearing shells (4), such as a crankshaft of a large two-cycle diesel motor, in the gap created between the bearing seat (5) and a bearing journal (3) received in the bearing seat by dismantling of the bearing (4).

Abstract: In the case of a method for the material-removing fine machining of a workpiece surface of a workpiece, in particular for the honing or finishing of workpiece portions having substantially rotationally symmetrically curved workpiece surfaces, at least one fine machining tool machines the workpiece surface and, by means of a measuring system, a measurement of the workpiece surface is performed. In this case, at at least one measuring position, radar radiation is directed onto the workpiece surface, and the radar radiation reflected from the workpiece surface is acquired and evaluated for the purpose of determining at least one surface measurement value.

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: In a method for the finishing of a crankshaft bearing bore in a cylinder crankcase of an internal combustion engine, starting from a prepared crankshaft bearing bore, a finished crankshaft bearing bore is produced with a prescribable desired size, a prescribable desired structure of the bore inner surface and a prescribable desired position of the bore axis. The prepared crankshaft bearing bore is first finished with at least one finishing tool with a geometrically defined cutting edge and then the honing of the crankshaft bearing bore is carried out. In a final finishing operation with a geometrically defined cutting edge immediately preceding the honing, an allowance of at least 0.4 mm is removed, and the honing tool is introduced into the bore coaxially in relation to the desired position of the bore axis and moved within the bore, an allowance of at least 0.08 mm being removed during the honing.

Abstract: A method of forming a complex form in a workpiece includes moving a grinding tool having a complex shape relative to a surface of a workpiece to form a complex shape opening in the workpiece, and the grinding tool is tilted in a lateral plane relative to the workpiece.

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: A method of cutting a profile in a cylinder surface. The method includes simultaneously interpolating an axial portion of the cylindrical surface using a cutting tool to form a profile having a plurality of annular grooves and a pocket having a radius larger than the cylindrical surface prior to the interpolating step.

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: A machined shape of a bore is based on the deformation amount of a data-acquisition bore after fastening of cylinder head. A cross section of an approximate shape is set to be an approximately-true circle shape, and a diameter of the approximately-true circle shape is changed along a central axial direction in accordance with the deformation amount of the data-acquisition bore, to determine the approximate shape. The approximate shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis. Since the machined shape of the bore is the shape obtained by reversing a phase of a recess and a projection of the approximate shape about a predetermined cylindrical shape, the machined shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis.

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: The present invention relates to a bonded abrasive article comprising specific shaped abrasive particles and a bonding medium comprising a vitreous bond. The present invention also relates to the use of an article according to the present invention in grinding applications, in particular in high performance grinding applications and to the use of an article according to the present invention for abrading a workpiece material particularly a workpiece material selected from steels, non-ferrous metals, and alloys. In addition, the present invention relates to a method for abrading a workpiece, the method comprising frictionally contacting at least a portion of an abrasive article according to the invention with a surface of a workpiece; and moving at least one of the workpiece or the abrasive article to abrade at least a portion of the surface of the workpiece.

Abstract: A system for dressing centrifugal clutches has a drum tool with an internal abrasive surface, and a flap tool with abrasive flaps. The drum tool can replace the clutch drum on the clutch driven shaft to dress the clutch shoes, or the flap tool can replace the clutch shoes and mechanism on the clutch drive shaft, which may be the engine crankshaft, to dress the clutch drum. In either case, the tool being used and the component being dressed can accurately simulate the engagement of the clutch shoes and clutch drum in operation, so that the clutch drum and shoes can be accurately dressed to the correct shape, matching each other, for use.

Abstract: Apparatus, systems and methods for testing brittle articles, such as glass or ceramic articles are disclosed. The testing is provided by a test apparatus that imposes a bending test to a brittle article. The testing is also well suited for testing small scale brittle articles which are too small to utilize conventional multi-point testing or ring-on-ring testing. In addition, the testing is also well suited for testing brittle articles that have one or more apertures (or holes) therein which can impact their ability to resist breakage. For example, the quality of one or more apertures provided in brittle articles can affect breakage levels and thus can be monitored and/or adjusted through testing.

Abstract: The present disclosure involves various embodiments for finishing the internal wall of a capillary tube. A quantity of abrasive particles and a rod are placed in a capillary tube, wherein a portion of the abrasive particles is magnetic. A magnet is positioned near a side of the capillary tube, thereby attracting the abrasive particles toward an internal wall of the capillary tube. A relative rotation of the capillary tube is produced with respect to the magnet, thereby causing the abrasive particles to finish the internal wall of the capillary tube.

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: An arm 21 has a shape for grasping a part in a circumferential direction of a tool holder 7. The arm 21 is connected to the tool holder 7 with a bolt 23 inserted into a fixing hole 22 provided in a base side portion of the arm 21. A tapped hole 25 used for exchangeably attaching a cutting tool 24 is formed in a tip side portion of the arm 21. A groove part 26 extending in parallel to an axis of the tool holder 7 is formed in a position close to the base portion of the arm 21. Owing to the groove part 26, the arm 21 works as an elastic hinge when an external force is applied, so as to increase or decrease a radial dimension of the cutting tool 24 while keeping its parallelism to the axis of the tool.

Abstract: A method for manufacturing roller pockets in a stator of a gerotor device generally includes providing a stator having a cavity including a generally cylindrical section defining a central axis and a plurality of roller pockets angularly spaced around a periphery of the cylindrical section. Each roller pocket is configured to receive a respective roller, which acts as an internal tooth of the gerotor device. Each roller pocket defines a generally cylindrical roller pocket bearing surface. The method further includes grinding each roller pocket bearing surface of each roller pocket with a grinding wheel rotating about a rotational axis perpendicular to the central axis. A stator for a gerotor device is also described.

Abstract: A blank tube for cold drawing is used for the production of a longer-length, small-diameter tube such as a heat-transfer tube for steam generation in nuclear power facilities, wherein the blank tube will not cause scoring and chattering vibration in a drawing process. The blank tube is used to produce a cold drawn tube through cold drawing of the blank tube. The average surface roughness Ra (ANSI B46.1) of the inner surface of blank tube before drawing satisfies the condition: 0.10 ?m?Ra?1.00 ?m in the case of a blank tube for cold drawing for use in an oil-lubricated drawing. In particular, the surface roughness Ra satisfies the condition: 0.10 ?m?Ra?0.50 ?m in the case of a blank tube for use in a high-pressure lubrication drawing and made of an austenitic alloy for use in a heat-transfer tube for a steam generator.

Abstract: A cylinder assembly for use in an internal combustion engine is disclosed, The cylinder assembly may include a cylinder, a piston disposed within the cylinder, a plurality of piston rings encircling the piston, and a cylinder liner fitted around the piston in a cylindrical space in which the piston reciprocates. The piston may reciprocate within the cylinder along a longitudinal direction of the cylinder. The cylinder liner may include an upper section, a middle section, and a lower section. The upper section may be composed of a first texture; the middle section may be composed of a second texture that is rougher than the first texture; and the lower section may be composed of a third texture that is smoother than the first texture and the second texture.

Abstract: A method for polishing a vehicle wheel, the wheel includes a plurality of holes and a cylindrical rim. A polishing media storage tank holding abrasive media is vibrated to cause the medium to flow in an upwardly or downwardly vortex. The vehicle wheel is dipped into the medium such that the rim portion is disposed between the upward or downward flow of the medium, to polish the wheel.

Abstract: A radially inwardly open raceway formed in a nut centered on a nut axis is machined by of oscillating the nut about the nut axis while pressing a tool secured in a holder radially outwardly into the raceway of the nut. The holder is moved parallel to the nut axis and oscillated about a tool axis perpendicular to the nut axis synchronously with the oscillation of the nut about the nut axis. Springs brace the tool against the holder parallel to the nut axis such that the tool can move limitedly in the holder against spring bias parallel to the tool axis.

Abstract: Stent, as well as a method and device for fabricating the stent, wherein the stent has a tubular lattice structure comprising individual struts and at least one strut of which at least one longitudinal section runs with at least one directional component in the radial circumferential direction of the stent, wherein the surface of the longitudinal section facing the outside of the stent is curved only about the longitudinal axis of the stent. According to the invention, the surface of longitudinal section of the strut, which surface faces the inside of the stent, has such a curvature that the strut cross section is fluidically optimized.

Abstract: Exemplary embodiments of the subject invention comprise methods and apparatus concerning balanced abrading of a tire surface by an abrading tool. Such an abrading tool may comprise a pair of counter-rotating, driven abrading members, each of the abrading members having a rotational axis generally extending laterally across the tool, the abrading members being spaced apart in a lateral direction of the tool by a desired distance, each of the abrading members having an abrading surface defined by at least one outer diameter, the abrading surface extending axially relative to the rotational axis of the abrading member, wherein each of the abrading has a shaft upon which each abrading member is arranged, each of the shafts being adapted to be driven by a driving source. The tool further includes a body to which each shaft and abrading member is attached.

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: Various systems, tools, and methods are described for rendering regions of coated pipe suitable for receiving press fittings. The systems, tools, and methods may also be applicable for transforming regions of pipe, coated or uncoated, and which are otherwise unsuitable for sealingly engaging press fittings, so that reliable and leak-proof seals can be made between the pipe and press fittings.

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: A method and apparatus for sanding a workpiece. A sanding apparatus may be positioned relative to a surface of the workpiece. A positioning structure for the sanding apparatus may be moved relative to a frame for the sanding apparatus. A sanding system for the sanding apparatus may be held at a range of heights and a range of angles relative to the surface of the workpiece, while the sanding system operates. The sanding apparatus may be operated to sand the surface of the workpiece.

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 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 magnetic particle carrying device includes a magnetic field generator and a hollow cylindrical structure. The magnetic field generator generates a magnetic field. The hollow cylindrical structure encases the magnetic field generator and attracts magnetic particles on an external surface of the hollow structure using the magnetic field. The external surface of the hollow cylindrical structure is provided with a plurality of elliptical depressions. The depressions include first type depressions and second type depressions. A long axis of a first type of elliptical depression is substantially extending in an axial direction of the hollow cylindrical structure, and a long axis of a second type of elliptical depression is substantially extending in a circumferential direction of the hollow cylindrical structure. The external surface of the hollow cylindrical structure has more elliptical depressions of the second type than elliptical depressions of the first type.

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: In a grinding machine, a retraction grinding is performed after a first advance grinding. Within a rotational range for a cylindrical workpiece to rotate from a present rotational phase to a target rotational phase in the retraction grinding, target grinding resistances in respective rotational phases are generated based on residual grinding amounts in the respective rotational phases of the cylindrical workpiece. Then, the retraction grinding is performed and controlled to make a grinding resistance detected by a force sensor agree with the target grinding resistances in respective rotational phases.

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: An ELID honing device includes a honing tool 10 positioned above a workpiece 1 having a hollow cylindrical inner surface, and vertically movable and rotationally drivable about a vertical rotation axis while being rockably suspended from an upper end, and a honing guide 20 positioned in proximity to an upper portion of the workpiece to guide the honing tool to the hollow cylindrical inner surface. The honing tool 10 has a fixed guide 12 having a predetermined radius R from the rotation axis to its outer peripheral surface, and honing stones 14a and 14b having outer peripheral surfaces movable in parallel from a diameter-increased position outside the radius R to a diameter-reduced position inside the radius R and capable of being electrolytically dressed. Further, the honing guide 20 has a hollow cylindrical ELID electrode 22 having an inner surface 22a for guiding an outer peripheral surface of the fixed guide of the honing tool and capable of being subjected to a negative voltage.

Abstract: A method for manufacturing roller pockets in a stator of a gerotor device generally includes providing a stator having a cavity including a generally cylindrical section defining a central axis and a plurality of roller pockets angularly spaced around a periphery of the cylindrical section. Each roller pocket is configured to receive a respective roller, which acts as an internal tooth of the gerotor device. Each roller pocket defines a generally cylindrical roller pocket bearing surface. The method further includes grinding each roller pocket bearing surface of each roller pocket with a grinding wheel rotating about a rotational axis perpendicular to the central axis. A stator for a gerotor device is also described.

Abstract: A ring fixture system for rotating a ring to perform engraving work. The system comprises a vise-securable fixture base with opposing mandrels connected through spaced arms of the fixture base at a ring-engraving location between the arms to form a mandrel assembly. The mandrels are provided with sets of detents with different degrees of rotational spacing, and the detents on one mandrel of the mandrel assembly can be engaged independently of the other set of detents on the other mandrel. The fixture base further includes a tool-supporting bridge connected between the fixture arms above the ring-engraving location to hold an engraving tool orthogonally to the ring axis, and may further include a sliding tool support on the bridge. Also, a method is disclosed for engraving a ring using the ring fixture system with the detents and tool-supporting bridge.

Abstract: A coating film peeling apparatus for resin material includes: a peeling cylinder, a peeling roll installed therein with a space for a peeling process along an inner wall of the peeling cylinder, a resistance lid disposed to block a discharge port of the peeling cylinder, and a pressure adjustment part for adjusting an outflow rate and internal pressure of the peeling cylinder. The peeling cylinder is constituted by a polygonal-shaped angular columnar body having, as coating film pass-through holes, rows K of small holes and rows L of small holes and projection rings (angular embossments) provided alternately in multiple rows along a direction perpendicular to a rotating direction of the peeling roll.

Abstract: A polishing apparatus for polishing an end edge of a work piece by bringing a bristle tip of a polishing brush into contact with the end edge of the work piece as the bristle tip passes the end edge of the work piece includes a support plate having a through hole into which the polishing brush is inserted and a suppression portion that is provided at the support plate and suppresses a deformation of the bristle tip of the polishing brush when the work piece is polished.

Abstract: A machined shape of a bore is based on the deformation amount of a data-acquisition bore after fastening of cylinder head. A cross section of an approximate shape is set to be an approximately-true circle shape, and a diameter of the approximately-true circle shape is changed along a central axial direction in accordance with the deformation amount of the data-acquisition bore, to determine the approximate shape. The approximate shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis. Since the machined shape of the bore is the shape obtained by reversing a phase of a recess and a projection of the approximate shape about a predetermined cylindrical shape, the machined shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis.