Showing papers on "Honing published in 1982"

Cushioned abrasive articles, and method of manufacture

Abstract: Extremely fine abrasive particles are incorporated in an elastomeric resin body or coating to produce abrasive articles exhibiting cushioned or resilient yielding qualities having a dual response to in-service conditions. These performance characteristics are accomplished by a structure whose working surface and underlying supporting means produce two distinct and complementary abrading actions, one hard enough to sharpen a hardened cutting tool and to smooth the adjacent surface, and a second of being virtually simultaneously micro-deformable, via the mechanisms of cold flow, at or near maximum or optimum sharpening pressure. Such abrasive articles allow limited local displacement of a volume of the abrasive surface layer in a continuous wave to lift the surface at the tool edge to a height slightly beyond the plane of the edge being sharpened to "wipe" and so refine the extreme edge of the cutting tool and to remove the "wire-edge" as only athree-dimensional form of contact will accomplish. The articles of this invention are particularly suited to the performance of honing, stropping and lapping operations.

Inside, outside honing tool

Abstract: Tools for honing an exterior cylindrical reference surface and for honing an interior cylindrical surface concentric with but offset from the reference surface each have a cylindrical feed sleeve slidable axially along the outside of the tool body As the sleeve is movable axially with respect to the tool body, a plurality of honing stones carried by the tool body moves radially with respect to the cylindrical surface being honed

Connecting element for the transmission of a rotary motion

Abstract: A connecting element for the transmission of a rotary motion, in particular between a honing spindle and a honing tool, comprises a tube (14) which has a plurality of openings (15, 16) of equal size arranged symmetrically and uniformly, with the result that the remaining parts of the tube (14) have a lattice-like structure. A certain elasticity of the tube in the sideways direction is thereby achieved.

Centerless flexible external honing apparatus

Abstract: A centerless external honing and/or grinding apparatus wherein abrasive material is flexibly mounted around a longitudinal workpiece-receiving recess for flexibly honing and/or grinding the exterior curved surface of a workpiece while it is fed longitudinally forwardly through the workpiece-receiving recess from an input end thereof to an output end thereof, and adapted to impart a desired type of surface finish, usually what is referred to hereinafter as a plateaued surface finish, to a curved exterior surface of the workpiece, which occurs by reason of the flexible mounting of the abrasive material (usually, abrasive particles) and the self-centering action produced by the centerless honing or grinding construction of three similarly longitudinally oriented, laterally and vertically adjacent roller members arranged cross-sectionally in a generally polygonal (usually triangular) array or configuration and with at least one and, in certain cases two, and in other cases, all three, of the longitudinal roller members being exteriorly and flexibly provided with abrasive particles and with at least one, and, in certain cases two, and in certain other cases all three of the longitudinal roller members being positively power-rotated, in certain instances, similarly and in other instances, in opposition to each other. Feeding is provided by a helical arrangement of exterior abrasive particles on the roller members and differentially slippingly power-rotated to apply a net forwardly directed force component to a workpiece whereby to feed same forwardly between input and output ends of a workpiece recess.

Electroless plating of diffused silicon wafer

Abstract: PURPOSE:To form solid plated film in the uniform thickness having excellent solder junctionproperty by sticking active cores to wafer surface through ultrasonic wave processing of the aqueous acidic ammonium fluoride, stannous chloride solution and palladium chloride solution and by processing such cores with the electroless plating solution of the Ni(Co)-B system. CONSTITUTION:The honing surface of silicon wafer having completed diffusion processing is degreased and is etched by the mixed solution of HF-HNO3. Then, the surface is washed by water. Thereafter, the wafer is processed by ultrasonic wave in the aqueous acidic ammonium fluoride in order to remove the oxide film of honing surface. The surface is washed again by water. Next, the wafer is dipped into the stannous chloride solution and then processed by ultrasonic wave. After it is washed again by water, it is dipped again into the palladium chloride solution and also processed by ultrasonic wave for purifying the honing surface of wafer and sticking of active substances. The honing surface of wafer is washed by water and an ohmic electrode of Ni system is formed by the electroless plating using the Ni-B system electroless plating solution. Thereafter, it is washed by water and dried up. Finally, a semiconductor element can be formed by dicing.

Variable angle extruder blade surfacing machine

Abstract: A blade surfacing machine for precisely honing a pair of intersecting surfaces on an extruder blade. The working surface of a rotating honing stone is maintained in spring-biased contact with a precisely leveled guide surface to achieve linear uniformity of the blade. A workholder table is pivotable about a horizontal axis and may be pin locked at selectable angles to produce blades having a selective angle of intersection between the two honed surfaces.

Improvements relating to honing

Abstract: A honing machine uses a honing tool of the type having two honing surfaces and a core for adjusting the lateral positions of the surface relative to the tool body. The machine has a piston feed mechanism for adjusting the honing diameter of the tool, a drive mechanism for rotationally driving the tool and a stroke mechanism for axially reciprocating the tool to effect a honing stroke. A control system monitors the position and velocity of the feed piston of the feed mechanism and reaction force applied to the feed piston by contact with a workpiece and in dependence thereon controls the operation of the mechanisms in a preselected manner.

Mandrel honing tool

Abstract: A mandrel honing tool (11) is intended for the precision machining of cylindrical workpiece bores and has front guide sections (18, 70), a tapered cutting section (19) and a cylindrical finishing zone (20) as well as an adjoining cylindrical guide zone (14). The zones (18, 19, 20) carry a cutting layer (72, 73) consisting of abrasive agent and if need be having different grain size, while the guide zones (14, 70) have an armoured layer (71) which consists of extremely hard material particles, for example diamond, and which, on account of its grain size and/or arrangement, does not cut but protects the guide zones from wear or damage. The mandrel honing tool (11) normally works in a single forward and return stroke of the rotationally driven tool.

Equipment for boring and honing in combination

Abstract: PURPOSE:To reduce the number of work processes and simplify equipment, by enabling boring and honing for machining the hole of a work to prescribed final dimensions with a single spindle. CONSTITUTION:A machining head 50 is integrally coupled to the lower end of a spindle 28 by bolts or the like. The head 50 is fitted with a boring wheel or tool 51 and a honing stock 52 so that boring and honing can be both effected with the spindle 38. Hard grains such as diamond grains are provided on the peripheral surface of the wheel 51 to bore the hole Wa of a work W. The wheel 51 is fitted on the lower small-diameter part 50a of the head 50 and tightened by double nuts 53. According to this constitution, the number of work processes is reduced and the equipment is simplified.

Development of a running-in procedure for a locomotive diesel engine

Abstract: Running-in of a locomotive diesel engine has been studied in an attempt to improve the resistance to scuffing. Honing and running-in tests showed that silicon carbide honing gives a better and more consistent honing finish than Flex-honing. The use of a running-in compound was found to shorten the running-in time without any harmful effects.

Treating method for cylinder surface in cylinder block made of al alloy

Abstract: PURPOSE:To carry out even etching in a short time, by carrying out electrochemically etching of the inner circumferential surface of a cylinder block made of a high Si-Al alloy. CONSTITUTION:The inner circumferential surface of a monobloc-cast cylinder block made of a high Si-Al alloy is mirror-finished by honing or the like. Subsequently, an electrolyte is jetted into a uniform gap 1 e.g. between an uprightly standing tool electrode 2 and a cylinder block 4 supported in a hand-standing state, and at the same time, an electric current is sent between the both for several seconds. Thus, only eutectic Al on the inner circumferential surface of the block 4 and which is a good conductor is electrolytically corroded uniformly.

High strength steel wire for spring and manufacturing apparatus for it

Abstract: PURPOSE:To obtain a high strength steel wire for a spring with superior bending and twisting characteristics after bluing by producing compressive residual stress in the surface layer of a wire by a liq. honing or shot peening effect and a brushing effect afer a cold drawing stage. CONSTITUTION:A rough steel wire 1 is cold drawn with continuously arranged cold drawing devices 31-3n and passed through a capstan 5 and a liq. honing or shot peening box 6. During the passage through the box 6, the surface layer of the resulting steel wire 10 receives compressive residual stress. The wire 10 is then passed through a wire brushing device 7, where the surface of the wire is brushed with wire brushes rotating at high speed. Thus, compressive residual stress is further applied to the surface layer of the wire.

Production of thin-walled cylindrical body having smooth inside circumferential surface and abrasion resistance

Abstract: PURPOSE:To produce a thin-walled cylindrical body having required characteristics such as heat resistance and abrasion resistance more inexpensively by melt spraying a prescribed metal or ceramics on the smooth outside circumferential surface of a mandrel of a circular section. CONSTITUTION:While a mandrel 1 of which the circumferential surface is finished smooth is rotated, a metal or ceramics having desired characteristics is overlaid with a melt spraying gun on the circumferential surface thereof. Here, a material having abrasion resistance and heat resistance, for example, chill, is melt-sprayed on the inner side thereof to a prescribed thickness, after which an inexpensive material, for example, a steel wire is melt-sprayed on the outer side thereof to a required wall thickness. The resultant melt sprayed layers 2, 3 are heated or the mandrel 1 is removed in a heating atmosphere, whereby a thin- walled cylindrical body 5 is obtained. The roughness of the inside surface of the body 5 is improved by the surface finish accuracy of the mandrel 1 and the fining of the grain sizes of the melt spraying material. If necessary, the inside surface thereof is finished smooth by buffing or honing.

Surface treatment of steel plate

Abstract: PURPOSE:To enhance the corrosion resistance and adhesion by treating the surface of a steel plate with abrasive grain powder composed of metallic salts of phosphoric acid and polyphosphoric acid and forming an oxide film having a prescribed thickness or above. CONSTITUTION:A degreased and washed steel plate is subjected to surface sweeping or liq. honing with abrasive grain powder composed chiefly of metallic phosphate and metallic polyphosphate in the form of simple or mixed powder. An oxide film having >=100Angstrom thickness is then formed on the plate surface in a state where much abrasive grain powder is contained. By this method a homogeneous coat with superior adhesion is formed, and the corrosion resistance and adhesion of a coated film are enhanced.

Holding method for wafer in dry honing work

Abstract: PURPOSE:To rapidly discharge static electricity generated on a semiconductor wafer to be machined at the time of dry honing it by placing the wafer on a working base, and holding the wafer by a conductive rubber pressed onto one side surface of the wafer and electrically contacted at the opposite side surface with the ground. CONSTITUTION:A conductive rubber sheet 4 opened with a hole 5 is bonded to the flat upper surface of a working base 1, and a wafer 10 to be machined is placed on the base 1 exposed within the hole 5. Then, the wafer 10 is pressed at one side surface by a spring 6, and is pressed at the opposite side surface to the inner wall of the hole 5, thereby effectively holding the wafer 10. Thus, preferably electrical contact is produced between the wafer 10 and the sheet 4 by utilizing the elasticity of the sheet 4. When atomizing abrasive 2 is thereafter sprayed, the static electricity produced on the wafer 10 can be escaped rapidly to the ground, no discharge occurs between the base 1 and the wafer 10, and no damage occurs at the wafer 10.

Machining element for a honing tool

Abstract: The subject of the invention is a honing tool into which different types of machining elements can be introduced successively, that is to say grinding elements and strips with protrusions having a chip-removing effect. In order to increase the material-removing capacity of the honing tool, said strips (2: Figure 1) consist of hard metal and have a cutting edge (3) which has, along its extent, a multiplicity of notches (4), this resulting in cutting tips (5). Between bouts of grinding machining, a machining element of this type produces fine grooves again and again on the workpiece surface. Said grooves can be rapidly removed again by machining, without impairing the machining quality, as a result of which the machining capacity is considerably increased.

Liquid honing method

Abstract: PURPOSE:To avoid spoiling the interior of a work with an abrasive by a method wherein a fluid is made to flow out via a through-hole at an objective surface of a work so as to prevent an abrasive from penetrating into the through-hole, in a honing process. CONSTITUTION:The work W is set between centers 8, 11, then clean air is fed into the interior W1 of the work W through a fluid supply pipe 6 connected to one of the centers 8 and is caused to flow out through the through-hole 1 of the work W, and the work W is rotated about its axis by a motor 7. Then, the abrasive 3 is blasted onto the work W from a blasting gun 2 to hone the peripheral surface of the work W. In this case, since the clean air is flowing out through the through-hole 1, the abrasive can be prevented from penetrating into the through-hole 1 and the honing of the work W can be performed without spoiling its interior with the abrasive 3.

Honing unit for small round workpieces - has segmented holding clamp ring suspended via springs symmetrically to honing spindle axis

Abstract: The arrangement is intended for retaining a small round workpiece during a honing operation At least one clamp ring (10) holds the work and is suspended via springs (11) in a position symmetrical relative to the honing spindle axis The ring may consist of a number of identical segments which are individually suspended via springs and contained in a clamping bush (18) which may consist of a resilient inner wall of an annular chamber (20) connectable to a pressure source Each segment is pref suspended from two springs (11) connected to its axial ends, such that they provide a radial and an axial force component

Circulation processing unit for liquid honing

Abstract: PURPOSE:To simplify control by circulating abrasive and abluent water inside a captioned processing unit for deburring semi-conductor and making concentration of abrasive nearly changeless inside the unit. CONSTITUTION:A supernatant acqueous solution 1 in an acqueous solution tank 2 is put by pressure into a ultra filter 14 via an acqueous solution pipe 12 attached to a pressure feed pump 13. Concentrated acqueous solution obtained as a result is poured into a tank 2 via a pipe 15, which stirs up inside the tank 2 making start up time unnecessary at honing. On the other hand, pure filtered liquid obtained from an ultra filter 14 is transferred to a washing sprayer 9 via a pipe equipped with a pressure feed pump 17 and used again as abluent liquid. In this way, by circulating abrasive in acqueous solution in a circulation unit its volume is kept unchanged and by circulating even abluent water in a closed loop, concentration of abrasive is nearly unchanged so that its control becomes quite easy.

Knife fine sharpening tool - has grinding and felt bodies forming composite driven unit with protruding felt surface

Abstract: The tool is for the fine sharpening, and particularly the honing and deburring, of knife edges, using machine-driven grinding, polishing and felt bodies. These grinding, polishing (1) and felt (2) bodies together form a composite driven unit, the working face of the felt body being supplied with coolant liq. and situated between those of the grinding and polishing bodies. It is parallel to the latter and protrudes slightly beyond them. The felt body can be composed of felt discs or rings mounted concentrically between the other bodies, rotating with them, and forming with them a laminated packet.