Showing papers on "Honing published in 1988"

Honing, lapping and polishing machine

Abstract: A honing, lapping or polishing machine includes a central inner gear member and an outer annular gear member each having an annular row of teeth, and a plurality of workpiece holder discs having teeth at their outer peripheries in driving engagement with the teeth on the inner and outer gear members in a planetary gear type fashion. The workpiece holder discs have recesses for receiving workpieces. The number of teeth on the outer gear member is an integral multiple of the number of teeth on each workpiece holder disc. A drive assembly rotates the inner gear member and is arranged to stop the workpiece holder discs in a predetermined loading and unloading position of at least one of the discs in response to a position signal from a detector assembly. The detector assembly includes a position detector movable into the path of the discs to provide the position signal when one of the discs reaches a predetermined relative position with respect to the position detector.

Manufacture of semiconductor device

Abstract: PURPOSE:To obtain a high-quality semiconductor device by removing resin completely by the use of a honing apparatus consisting of a pre-honing stage in which the device is treated with jet of a pressurized chemical solution containing NaOH and a post- honing stage in which the device is treated with jet of pressurized water. CONSTITUTION:A honing apparatus used herein shoube be capable of belt conveying and has two-layer structure consisting of the first layer for preliminary treatment mainly composed of caustic soda and the second layer for post treatment utilizing principally hydraulic pressure. One semiconductor device per three seconds is fed sequentially from the side of a loader to such honing apparatus. In the first layer of the apparatus, the semiconductor device was heated to about 60 deg.C by the use of a high alkaline material containing caustic soda and then the high alkaline particles were applied in a jet to the whole surface of the semiconductor device for about 5 minutes under a pressure of about 100kg/cm . Further, in the second layer of the apparatus, water under a pressure of 150kg/cm was likewise sprayed in a jet to the whole surface of the semiconductor device to remove resin 9 completely. Finally in the drying process, air is blown to dry the device. The chemical solution used in the pre-honing stage is not limited to those containing NaOH. It may be any chemical solution as far as it can swell the resin.

Flexible abrasive grinding tool

Abstract: A flexible abrasive rotary tool includes a hub adapted to be driven for rotation. Secured to the hub are discrete bristle tufts of stiff yet flexible abrasive loaded plastic monofilaments which project radially outwardly and then circumferentially away from the intended direction of rotation of the tool in the general form of a spiral so that the filaments of the distal end of each tuft extend generally circumferentially and overlies the filaments of the next adjacent tuft. The outer end of each tuft is resiliently radially supported by such adjacent tufts. The bristle monofilaments are preferably nylon and loaded with about forty-five percent of abrasive material and have a rectangular or somewhat oval sectional configuration so that the wider side of the monofilament forms the tool face. The tool has a number of applications but is particularly adapted to be circumferentially compressed into a bore or cylinder, such as that of an internal combustion engine. The rotary tool also deburrs and properly finishes the edges of any ports such as cylinder ports. The invention includes not only the method of finishing or honing such surfaces but also the method of making the tool and replacement tufts.

Method and tool for machining the surfaces of workpieces

Abstract: A method and tool for machining the surfaces of workpieces. The surface is finished by honing high pressure fluid jetting, and brushing. The tool used in this connection is provided with at least one tool element, such as a honing bar and/or a brush bar, and at least one spray or jetting mechanism.

Honing machine with rotating plate having at least one head which does not rotate with respect to the plate

Abstract: The honing apparatus comprises a dolly 1 on which is mounted an electric motor 2 and a reservoir for water 3. A flexible cable 4 emerges from the command motor and within this cable is located a flexible command cable which by means of a reducing adapter located at the end is connected with an assembly 8 and imparts rotation to the plate 6. The plate carries the operating heads 7 which provide for smoothing the plaster both on vertical walls as well as ceilings. The apparatus also provides for spraying water by means of tube 5 if this is necessary.

Honing apparatus having electrically operated actuator for relative reciprocating movement between honing head and workpiece

Abstract: A honing apparatus for honing a cylindrical surface of a workpiece, including a honing head supporting honing stones, a first drive device having an electrically operated bidirectional actuator for effecting a relative reciprocating movement between the honing head and the workpiece in an axial direction of the cylindrical surface, a second drive device for effecting a relative rotating movement between the honing head and the workpiece, a diameter measuring device for measuring a diameter of the cylindrical surface of the workpiece, and a reciprocation control device connected to the diameter measuring device and the electrically operated actuator. The control device is adapted to operate based on a measurement of the diameter by the diameter measuring device, to determine at least one of a range of the relative reciprocating movement, and a speed distribution of the relative reciprocating movement over a range of the relative reciprocating movement. The control device controls the electrically operated bidirectional actuator based on the determined range and/or speed distribution of the relative reciprocating movement.

Honing or grinding tool and measuring device for measuring wear

Abstract: A honing or grinding tool and a measuring device used therewith is descri The honing tool includes a cutting element, a cutting element support and a layer disposed between and connecting the cutting element and the cutting element support. The layer includes a substance embedded therein which selectively absorbs and/or emits electromagnetic radiation at specific wavelengths, such that the substance is exposed when the cutting element is worn off and detected by the measuring device.

Throw away chip

Abstract: PURPOSE: To make cutting of compound material with deep cutting and superior surface accuracy, by installing the first cutting edge to which honing is done and the second cutting edge without honing along the feeding direction, and making the tip of the latter project farther than the tip of the former in cutting direction. CONSTITUTION: As for a chip 10 its upper face 12 is made rake face, a cutting edge 13 is formed on each ridge line portion, and the first cutting edge 15 and the second cutting edge 16 are formed at a corner portion 14 along the feeding direction F. As honing is done to the cutting edge 15 and not done to the cutting edge 16, it is so constituted that the tip of the cutting edge 16 projects farther than the tip of the cutting edge 15 in cutting direction within a range X from 0.01 to 0.1mm. According to feeding of the chip 10, rough cutting is made first by the cutting edge 15 to which honing is being done and which is superior in strength, and subsequently finish cutting is made by the cutting edge 16 which is superior in deposition property, for example even in case of deep cutting of compound material consisting of cast iron and aluminium chipping does not occur to the cutting edge 16. COPYRIGHT: (C)1989,JPO&Japio

Method of improving the grinding performance of grinding and honing bodies

Abstract: A process for improving the grinding performance of a porous ceramic or plastic bound grinding or honing body, using the steps of obtaining a conventionally produced porous ceramic or plastic bound grinding or honing body, and filling the pore spaces of the body at least in part with at least one metal soap.

Method for selectively forming small diameter holes in polyimide/Kevlar substrates

Abstract: Methods for forming small diameter holes in polyimide/Kelvar® substrates utilize hot concentrated sulfuric acid and then honing, as necessary, with liquid abradant slurries to smooth uneven edges of the openings.

Controllable electrolytic honing process and equipment

Abstract: The shape and accuracy of the work piece is controlled by way of the controllable electrolytic field. this process can be used as the executive means for controlling the machining in the procedure system, featured in high response frequency and high accuracy of control up to micrometers to produce a finish of 8-12 and over. Apart from the mechanical drive, the main parts in said process outfit are a cathod, a honing tool, an electrolytic solution system, a field control device, a controllable power supply and an address signal generator. Machining can be controlled according to the shape and tolerance required by the work piece or may be controlled by real-time measuring method or in situ measuring method.

High speed electrochemical boring

Abstract: Electrochemical machining (ECM) is widely used nowadays in a great variety of processes, especially in the aero and auto industries The main machining processes, where high tool feed rates are required, are drilling, cavity sinking, broaching and grinding In addition, the non-equilibrium machining processes, where stationary electrodes are utilized, have important practical applications in the fields of deburring and embossing Electrochemical honing is a non-equilibrium process EC honing is a new technique which, in spite of being used in some industrial plants, is still not fully described, requiring more information about the process This work presents a comparative study, between rotating and non-rotating electrodes for the enlargement of conventionally pre-drilled holes The comparison covers the rate of metal removal, dimensional accuracy, surface finish and power consumption The beneficial advantages of using high rotational speeds on component accuracy are verified The results emphasize that each process has its own particular characterization, appropriate field of application and tooling system

Multiple angle dressing device for tools and stock

Abstract: This invention provides a device that assists in the manual abrading and dressing at a selected angle of the edges of tools and other materials. The device can be mounted on a workbench and comprises a frame in which is mounted an abrasive means such a file, rasp or honing stone. A supporting platform, on which is mounted a pushing block and a handle, is slidably mounted in the frame. The object to be dressed is placed on the supporting platform, both of which can then be moved back and forth with one hand by the user, while the other hand pushes the object against the abrasive surface. The angle of the supporting platform in relation to the abrasive means can be made adjustable by means of a portion of the supporting platform comprising an angle-control supporting portion that is pivotally attached along one side of a base portion of the platform, the pivotal attachment being on the side of the platform adjacent to the abrasive means. A slotted flange, calibrated in degrees, is mounted perpendicular to the base portion in a position that enables a bolt or nut to lock the supporting platform at the selected angle.

Apparatus for maintenance of ball valve

Abstract: Apparatus for maintenance of the moveable pipe sleeves (52), bearing surface and seals of a ball valve. The apparatus comprises a bonnet (7) de­ signed to be secured to and form a tight connection with a valve flange (53) and fastened to the under­ side of the bonnet (7), there are: honing tool for honing of spherical sealing surfaces (56) and coni­ cal sealing surfaces (51) on a valve housing; dis­ mounting tool for dismounting of old sealing rings on the pipe sleeves (52); mounting tool for moun­ ting of new sealing rings on the pipe sleeves (52); rotating mechanism (8) for 90 degrees rotation of the honing tool (1) and the pipe sleeves (52).

Repairing of hydraulic cylinders for support shields

Abstract: According to the invention, cylinders with damaged surfaces are repaired by the damaged areas being localized according to a first honing operation while constructing a template and then by being hard-faced while tracing the template.

Honing tool for working bearing surfaces

Abstract: Honing tool for working rotationally round, e.g. cylindrical, bearing surfaces which rotate during working and are of width B, on shafts, rolling-bearing rings, gearwheels and the like, by superfinishing, having a supporting part and a working part, the supporting part consisting of steel and the working part having a matrix and grains of hard material (e.g. cubical boron nitride and/or diamond) embedded therein. The working part has an arcuate working surface which is adapted to the bearing surface and whose length L in the arc direction corresponds at least to the width B. The working part is divided up into two or more than two working ribs, between which are arranged grooves which run transversely to the arc direction and thus transversely to the direction of rotation of the bearing surface. The working ribs have working part-surfaces.

Work-holding apparatus and method

Abstract: An apparatus and method are disclosed for holding a generally cylindrical workpiece for honing or otherwise machining an internal bore. The workpiece is held by a gripping surface over most of the innermost turn of a spirally wound spring and coil. The workpiece is grasped circumferentially over its outer surface without excess contact pressure at any particular point. A tendency of the machining operation to rotate the workpiece serves to secure the workpiece more tightly in position by tightening the outer turns of the spring band coil. A rotatable tensioning member acts under the influence of a biasing spring to decrease the diameter of the innermost turn of the spring band coil to bring the gripping surface into contact with the workpiece. A method for adapting the work-holding apparatus to smaller or inrregularly shaped workpieces consists of molding an annular piece around the workpiece. The molded annular piece has an adhesive layer impregnated with an abrasive grit to grip the outer circumference of the workpiece. An alternative embodiment of the apparatus comprises an annular housing into which a removable cartridge holding a spring band coil can be inserted and fixed in position. A series of cartridges, each employing a different size of spring band coil, provides a work-holding apparatus that can be used with a wide range of workpiece diameters.

A device for honing razor blades

Abstract: of EP0293512This invention is concerned with the honing of edge cutting tools and in particular with the blades of safety razors, with the emphasis being placed on the modern twin-bladed razor. The invention provides a simple apparatus designed to engage a safety razor such that the blade (30) is located into a shroud (15), the shroud being provided with a resilient cushion (26) which is intended to be forced up against a tap such that water is injected in a pressure stream over the blades of the razor. The action of passing water across the blades in this manner tends to exercise a honing action on the blades which extends their useful life over a number of months.

Apparatus for the superfinishing of conical rollers

Abstract: An apparatus for the superfinishing of the surfaces of conical rollers contains two rolls (11, 26) driven in the same direction, one of which is equipped with a transporting collar. The conical rollers are transported in the longitudinal direction of the apparatus between said rolls and at the same time turn about their own axis. During this, in the region of the upper side, a working of the surface by means of honing stones is effected. According to the invention, the apparatus has, in its end region, a region in which no relative movement occurs in the longitudinal direction of the apparatus between the honing stones and the conical rollers to be worked. As a result of this recess region, there is a considerable improvement in the roundness of the conical rollers.

Work-holding implement and bench-mounted loading fixture therefor

Abstract: A work-holding implement for use in honing or otherwise machining the inner surface of a bore in a workpiece comprises a torsion-carrying spring band coil mounted at one end of a handle Most of the inwardly exposed surface of the innermost turn of the coil is a gripping surface, while the remaining turns in the coil have smooth bearing surfaces A workpiece is gripped by the innermost turn, and as an interior bore in the workpiece is being honed or otherwise machined, rotational torques exerted on the workpiece by the machine tool cause the coil to become more tightly wound around the workpiece As the workpiece is being worked on, the tightened coil bears against a planar segment of the spring band forming part of the implement and deforms it into a curved surface conforming to the workpiece surface over which contact is made Two control guides serve to keep the turns of the coil in alignment for proper pressure distribution of the innermost coil in its contact with the outer circumference of the workpiece A loading fixture for use in conjunction with the work-holding implement allows quick and easy insertion and removal of a workpiece with safe and sure frictional engagement of the workpiece

Method of and tool for machining surfaces of combustion engines

Abstract: 2.1 During the honing of, for example, the working surfaces of pistons, the material structure is deformed in the area of the edge zone. Following the honing, the working surface is retreated in a blasting unit with a liquid jet under high pressure. The requisite blasting pressure already leads to destruction of the graphite clusters embedded in the structure, as a result of which an optimum working surface cannot be obtained in the production run. … 2.2 In order to provide a surface free of metal scales, but with the graphite clusters embedded in the structure not being destroyed or dissolved away, the surface (6) is brushed in addition to the honing and high-pressure blasting treatment. To carry out this method, a tool (3a) is provided which has a tool part, such as honing sticks and/or brush sticks (15), and in addition at least one blasting device (13). A surface free of metal scales is obtained by the combined high-pressure blasting and brush treatment. … 2.3 The invention ensures that the graphite clusters present in the structure remain intact. The method is simple to carry out with the tool. … …

Coated cutting edge for cutting tool

Abstract: PURPOSE:To extend substantially the lifetime of a cutting edge by forming a coat resisting fracture on the honing part of the cutting edge and a coat resisting abrasion on the cutting face, flank and and the like thereof CONSTITUTION:One, two or more than two coats of titanium carbide, titanium nitride or titanium carbon nitride are formed on the honing part of a cutting edge for a cutting tool, using a physical deposition method The cutting face, flank or other faces of the cutting edge are applied with the same coats via a chemical deposition method Or the lower coat is formed with the chemical deposition method and the upper coat with the physical deposition method And the total thickness of said coats is made 05mu to 20mu According to the afore-said constitution, the coats of the honing part come to have higher tough ness and higher resistance against a fracture, thereby enabling the prevention of a fracture at the honing part of the cutting edge, such as a cutting edge exposed to a continuous cutting load Also, the formation of the coats on the cutting face, flank and the like of the cutting edge using the chemical deposition method for ensuring superior adhesion and abrasion resistance, enables the lifetime of of the cutting edge to be substantially extended

Spherical face honing method

Abstract: PURPOSE:To enable highly accurate machining, when horning a work having spherical face, by repeating machining in forward and reverse directions with two grinding wheels even when the center line of the work is shifted from a referential line. CONSTITUTION:Rotary axis C of a work 2 having spherical face and rotary axes (d), (e) of grinding wheels 17, 17' exit on same plane, where (o) is the center on a rotary axis (c) which is provided when the work 3 is machined, and cup type grinding wheels 17, 17' are arranged on rotary axes (d), (e) which make same angle theta with respect to a line passing through the center (o). Grinding faces of the grinding wheels 17, 18' are recessed to constitute a portion of a spherical face corresponding to the machining face of the work 3. The work 3 is rotated in the direction of an arrow then the grinding wheels 17, 17' are rotated in same direction as shown by an arrow and pressure contacted with the work 3. At the same time, circular motion is applied onto the grinding wheels 17, 17' so as to carry out honing. Since grinding resistance is low in first quadrant, high in third quadrant, high in second quadrant and low in fourth quadrant, uniform machining can be made.

Automatic honing device

Abstract: PURPOSE:To aim at reduction of work time and improvement in environment for work, in cleaning of a steam turbine diaphragm and the like, by using a diaphragm support stand of a mobile type with rack and allowing a work stand to run and move up and down freely. CONSTITUTION:Diaphragms 1 are hung out from a turbine chamber and placed on respective diaphragm support stands 20 in the case of a periodic inspection, and when a honing process is required on the 5th step left side surface, for example, a command is issued to a control unit 90 to make the 5th and 6th step support stands 20 to move rightward along a rack and rails 11 by their own driving devices, a work stand 30 to move along rails 12, a work base board 40 staying on the top position to be inserted between them, a nozzle unit 60 to be turned by a driving equipment 50, honing agent to be injected from a supply pipe 80, and each diaphragm nozzle blade to be subjected to a honing process successively. Meanwhile, a provisional cover 6 is installed during the honing process. Thus, a period of time required for the periodical inspection can be greatly decreased by reducing work time, improving the enviroment for work, and reducing an area required for work etc.

Method for honing bores or shafts and the like by means of a hone

Abstract: The invention relates to a honing tool for honing bores or shafts and the like which consists of a cylindrical hone, and which are provided, on the one circumferential half, at least one cutting strip which is fixed to a cutting-strip carrier and, on the other circumferential half, at least one supporting strip. The cutting strips are now substantially narrower than in the case of known honing tools and can therefore also be arranged at different points on the wider cutting-strip carrier.