Showing papers on "Honing published in 1992"

Method and apparatus for shaping the interior surfaces of bores

Abstract: A method and apparatus for machining of bores in workpieces is described, where a honing tool, covered with an abrasive material coating and radially pressed against the wall of the bore, simultaneously performs a rotational motion and an axial reciprocal motion. In addition to the reciprocal and rotational motions, the honing tool performs a high-frequency, short-stroke self-oscillation, which is excited by ultrasonic oscillation in the range of 16 to 40 kHz.

Honing process with rough honing tool and finish honing tool on same rotating head

Abstract: A two honing process eliminates the need for subsequent brush honing at another location. The honing process which is accomplished with a single head uses rough honing stones or tools for the initial phase, and finishing tools of tightly compacted abrasive containing plastic monofilaments for the second phase. The phases may be contiguous, slightly spaced, or preferably overlap for up to about one-half of the rough honing phase. When the finishing honing tools are operating alone, the angle of movement of the tools is somewhat askew of the oil retaining ridges and grooves formed by the rough honing operation. With the process, the oil bearing surfaces have improvements in plateau finish and surface topography, avoid abrasive contamination caused by hard finishing tools, and obtain such improvements in a more economic manner.

Abrasive filament honing tool and method of making and using same

Abstract: A honing tool characterized in one form by an elongated rectangular cup element or holder having a bottom interior surface, a bundle of closely packed relatively short discrete generally parallel abrasive containing filaments secured in the holder, and a layer of instant gel adhesive securing all of the filaments at one end face of the bundle to the bottom interior surface of the holder. To make such a honing tool, a measured bundle of uniformly closely packed nonwoven, generally parallel discrete filaments is formed. A holder is supported and a measured amount of gel adhesive is placed in the bottom interior of the holder so that a layer of such adhesive completely covers the bottom of the interior of the holder. The bundle is then promptly driven into the holder so that all of the filaments at one end of the bundle are in contact with the adhesive prior to the curing of the adhesive. The adhesive is then cured. In another form a rectangular bundle of abrasive containing strips is formed, each having a slit or scored lateral edge. The plastic strips may be formed into bundles by ultrasonic welding through the unslit or unscored root portions of each strip. The bundle is driven into the holder to be secured by the gel adhesive in the same manner. In either form there is produced a rectangular or oblong honing tool which is provided with relatively short fingers closely packed not only within the holder but also at the working face. The improved tool has a somewhat soft or flexible working face as compared to a conventional honing stone or clad steel tool and will not contaminate the surface being honed. The tool provides an improved surface topography whether used as a finish hone or in a tertiary operation.

Procedure of fine machining workpiece surfaces

Abstract: The procedure for fine machining workpiece surfaces is a honing procedure carried out in at least two steps. In one of the steps of the procedure, the surface (6), for example the wall of a bore, is finish-honed to the intended final size, in the course of which a very fine structure with a very small depth of the honing marks is produced so that a large portion of the surface acts in a load-bearing manner. In another step of the procedure, which can be carried out before or after the finish-honing, intersecting grooves (9) are produced according to a predetermined pattern by means of a radiation device, in particular of a laser, in order to obtain a lubricant reservoir for the subsequent use of the workpiece. Since no deformations occur at the edges of the grooves during this radiation treatment, the intersection points (10) also remain free of material particles so that optimum distribution of the lubricant results.

Treating piston slide paths - using laser beam performing motion similar to honing motion

Abstract: The method concerns treatment of piston slide paths made, in particular, of cast iron. The surface (3) is finished by honing and is then subjected to treatment by means of a laser beam focussed onto it. The laser beam is applied to individual surface elements over brief time periods, so that only the scale cover of graphite segments is opened, without removal of material from the surface. Pref. a laser with a short wavelength is led over the surface with a motion similar to the honing motion. The beam is either point or line focussed onto the surface. The beam from a laser located outside the tool is brought to the tool via a light guide. The laser is modulated (in particular, switched on and off) to produce a required surface texture of the piston slide path. USE/ADVANTAGE - In the motor industry. Its use results in improved wear resistance, as well as in reduced oil and fuel consumption. Simpler (and hence cheaper) piston rings can be used.

Corrosion resistant cutting tool and method of manufacture

Abstract: A completely corrosion resistant, high strength cutting tool such as an orthodontic wire cutter includes a stainless steel body having a pair of corrosion resistant alloy steel bonding tips brazed thereto. The tips are brazed to the body using a nickel alloy brazing foil at a brazing temperature of approximately 1900 degrees F. After a rough grinding to appropriate shape, the entire tool is heat treated in a process that heats the tool to an austenitizing temperature for the cutting tips that is about 2050 degrees F. and substantially above the brazing temperature to achieve a tip hardness of 62-67 Rc. Thereafter finish grinding, buffing, polishing and honing of the cutting edges completes the manufacture of the cutting tool.

High silicon aluminium cylinder block and manufacture thereof

Abstract: PURPOSE:To easily enhance the productivity by forming a bore surface subjected to honing and having a surface roughness of Ra 08-12mu, a bearing ratio of 60-80% (position 2mu lower than the top part), and a cross hatch angle of 60-90 deg CONSTITUTION:A bore surface 2a is subjected to a general honing by a process 11 so as to have a surface roughness of Ra 03-06mu and a cross hatch angle of 60-90 deg The resulting bore surface 2a is subjected to a rough honing by a process 12 so as to have a surface roughness of Ra 08-12mu, a bearing ratio of 60-80% (position 2mu lower than the top part), and a cross hatch angle of 60-90 deg and a desired high silicone aluminium cylinder block is obtained

Honing tool for machining bores

Abstract: The honing tool proposed in designed for roughing down the end zones of bores. Prior art honing tools of this type are used to rough-hone blind-end bores near the bottom of the bore. Here the end of the bore is honed with short tool strokes, the honing stones used being very short compared with the depth of the bore and the length of the tool. In order, nevertheless, to brace the honing tool sufficiently in the bore (2) and thus ensure correct alignment of the tool, the honing tool proposed has guide bars (25) which extend over the outside of the honing stones (17). The tool can also be used to rough down the upper ends of bores whose upper boundary plane is inclined at an angle to the bore axis or which have unsymmetrical constrictions at the end.

On edge honing devices

Abstract: A honing device for mounting on a honing tool for rotation therewith including a backing material 12 having opposite end surfaces 18, 20, opposite side surfaces 14, 16, and an edge surface 22 extending between the opposed end and side surfaces, and a layer of an abrasive 26 such as a superabrasive material and a binder attached onto one of the side faces and extending therealong to the edge surface whereby an edge of the abrasive layer and the adjacent edge surface engage the workpiece surface to be honed. The abrasive material may be attached to the backing material by a three stage electrolytic or electroless plating process.

Abrasive suspension for wet honing and surface treating method using the same

Abstract: An abrasive suspension for wet honing for surface treatment of an electrically conductive substrate for an electrophotographic photoreceptor, the suspension comprising pure water having suspended therein at least 20% by weight, based on the total weight of the abrasive suspension, of an abrasive and having an electrical conductivity of not more than 10 μs/cm. A conductive substrate having its surface roughened by using the abrasive suspension is free from impurities.

Honing process and tool for finishing cylinder bores of IC engines, etc. - involves traversing hone through cylinder without rotation so that honing marks are parallel to cylinder axis

Abstract: The hone is traversed axially through the cylinder without significant rotation so that the honing marks produced on the surface are essentially parallel to the cylinder axis. It consists of abrasive coated segments (19) separated by small gaps (20) around the circumference. The segments, which are compliant and have slightly less curvature than the bore to be housed, can be expanded against the cylinder wall by a cone wedging system (17,18). The hone can be rotated through a small angle during axial traverse to cover the gaps (20) around the circumference, or it can be angularly indexed at the end of a traverse. Honing may initially be done conventionally and the rotational movement is switched off at the final stage. USE/ADVANTAGE - Mfr process for IC engine gives longer cylinder and ring life with reduced friction and emission of pollutants. Greater engine efficiency is obtained.

Apparatus for abrading a reed for a musical instrument

Abstract: Apparatus for honing a clarinet reed includes a base having one or more longitudinally tapered ramps and an upper portion slidable on the one or more tapered ramps and having a substantially flat abrasive file adjacent and spaced from the top surface of the base. The top surface of the base has one or more transversely tapered portions.

Method for finishing hardened crown wheels

Abstract: For the finishing of hardened crown wheels in which a crown wheel (11) to be worked meshes with a cylindrical honing pinion (13) whose geometry corresponds to that of a working pinion which must be able to mesh with the worked crown wheel, either the crown wheel or the honing pinion is driven so that it rotates, while the honing pinion or the crown wheel is in principle freely rotatable. The crown wheel and the honing pinion are moved to and fro relative to each other in the direction of the axis (15) of the honing pinion. The width of the honing pinion is greater than the length of the teeth (12) of the crown wheel, and the honing pinion is mounted so that it rotates on a slide (22) which is movable to and fro along a guide (23) in the axial direction of the honing pinion. The position of the axis of the honing pinion relative to the crown wheel is fixed. The tooth width of the teeth (16) of the honing pinion is such that there is play between the teeth of the honing pinion and the teeth of the crown wheel. The shaft of the honing pinion is braked by means of the braking device (25), so that during a specific direction of rotation of the crown wheel its teeth are worked at only one side. During the working process it is ensured that at least two teeth of the crown wheel are always meshing with the teeth of the honing pinion.

Method for one-sided surface making of workpieces

Abstract: A method for the one-sided surface machining of workpieces with lapping, grinding, honing or polishing machines, in which method workpieces are held on carrier wheels which are made to rotate about their own axis and are pressed against the rotating operating wheel via a flexible intermediate layer, two carriers wheels which are arranged back-to-back above one another via at least one flexible intermediate layer being arranged between the operating wheels of a two-wheel machine.

Honing mandrel construction

Abstract: A honing mandrel having an elongated body with a passageway extending along the length thereof including at least one open sided portion, the mandrel including an abrasive assembly positioned for radial movement in the open sided passageway portion having a radial outer surface formed of an abrasive material and a radial inner portion including spaced surfaces acutely angularly oriented relative to the axis of the mandrel body, cooperatively engageable surfaces on the abrasive assembly and on the body to prevent relative axial movement but not relative radial movement therebetween, and an operator member positioned in the passageway for axial movement therein, the operator member having surface portions thereon acutely angularly oriented relative to the axis of the mandrel body and positioned to make surface-to-surface slidable engagement with respective ones of the inner surfaces on the abrasive assembly whereby axial movements of the operator member in one direction relative to the abrasive assembly will produce radial movement of the abrasive assembly in an outward radial direction, the abrasive assembly and the operator member having adjacent side surfaces with other engaged portions including cooperatively engageable surfaces formed thereon which produce radial movement of the abrasive assembly in an inward direction when the operator member is moved in an axial direction opposite from the axial direction that produced the radial outward movement of the abrasive assembly.

Honing process method of drill

Abstract: PURPOSE:To apply a flat honing process to the cutting edge of a drill. CONSTITUTION:A side face grinding portion 15b is formed by planting a hard brush 15 on the periphery of a grinding wheel 9. The grinding wheel 9 is inclined by (180-phi)/2 to a drill tip angle phi to face the side face grinding portion 15b to a cutting edge 18. Furthermore, the grinding wheel 9 is inclined by a certain honing angle to the cutting edge 18. After that, the grinding wheel 9 is revolved around an axis, and a drill 6 is fed to in the axis direction to press the cutting edge 18 against the side face grinding portion 15b.

Honing stick and honing method

Abstract: PURPOSE:To prolong the life of a honing stick and heighten polishing efficiency while reducing noise. CONSTITUTION:A honing stick 1 formed into bar shape is provided with a pressure receiving member 2. The pressure receiving member 2 is a bar member of symmetrical U-shape cross section, and a bar-shape grinding wheel part 4 of rectangular cross section is fixedly disposed along the whole length in a long groove 3. The width of the grinding wheel part 4 is smaller than that of the long groove 3, and the grinding wheel part 4 is disposed in contact with one side face of the long groove 3. The pressure receiving member 2 is formed of soft metal material such as bakelite or an aluminum allay lower in wear resistance than the grinding wheel part 4. In this honing stick 1, the pressure receiving parts 2a, 2b lower in wear resistance than the grinding wheel part 4 are thus disposed on both sides of the grinding wheel part 4 in the minor axis direction, the center of the grinding wheel part 4 is shifted in the minor axis direction from the center of the whole honing stick, and the long groove 5 adjacent to the grinding wheel part 4 is provided on the pressure receiving part 2a side in the opposite direction to the shifted direction, along the longitudinal direction of the grinding wheel 4.

Cutting head precise adjustment for thermoplastics granulator and honing appts. - by grinding cutters in cutting head to precise shape by rotating at specific speed on grinding tool with material on face

Abstract: The cutting head (4) is slowly contacted with a grinding plate (3) covered with grinding material (9). The cutting head (4) totates at a predetermined velocity and all cutters (6) are simultaneously ground. Appts. for grinding the cutters (6) pref. comprises a cutting tool head (4) on a fixed axis, and the cutters (6) are concentric in a housing (2). A grinding plate (3) is mounted on the housing (2) and is axially in front of the cutting tool head (4) and in a plane parallel with it. A layer of grinding material (9) is applied to the grinding plate (3) face opposing the cutting tool head (4). USE/ADVANTAGE - Used for honing and aligning the cutters of a cutting tool head in a thermoplastics granulator. Achieves precise parallelism of the cutters wrt the cutting surface of the orifice plate.

Internal spherical surface honing method

Abstract: PURPOSE:To embody excellent sphericity and surface roughness in a job for honing an internal spherical surface. CONSTITUTION:According to this honing method, a ringlike grinding wheel 1 is used. An axis passing through the wheel center and extending in the longitudinal direction of a wheel spindle stock 8 serves as a turning axis, and the grinding wheel 1 is rotated around it. Along with this rotation, with internal ball center 7 being a base point, the wheel spindle stock 8 is rocked. Simultaneously with the axis passing through the internal ball center 7 from an internal ball apex 2 being a turning axis, a workpiece 6 is turned for grinding.

Valve ball honing head

Abstract: The utility model discloses a valve ball grinding head, which comprises a frame body arranged at a machine tool cutter frame, a drive mechanism arranged in the frame body, and a valve ball grinding machine with grinding head components; the valve ball grinding machine with grinding head components is connected with the rotating shaft of the drive mechanism; after a ball is grinded, the surface roughness degree of the ball can reach *-*, and the circular degree t value can reach 0.006 mm.

Grinding wheel shaft for internal gear shape gear honing machine and grinding wheel thereof

Abstract: PURPOSE:To reduce time required for dressing of a grinding wheel so as to increase the operation time of a machine in an internal gear shape gear honing machine by setting the eccentric quantity small in fitting the internal gear shape grinding wheel to a grinding wheel shaft. CONSTITUTION:In the grinding wheel shaft 3 of an internal gear shape gear honing machine in which the outer circumferential part 22 of an internal gear shape honing grinding wheel 21 having internal teeth on the inner circumferential part is fitted and held to the inner circumferential face 4 and driven to rotate, the inner circumferential face 4 of the grinding wheel shaft 3 is formed into a conical taper form, and the outer circumferential part 22 of the internal gear shape grinding wheel 21 fitted to the grinding wheel shaft 3 is formed into a conical taper form to conform to the grinding wheel shaft 3.

Filtering grinding and honing emulsion - using grinding sludge as filter aid for honing emulsion filtration

Abstract: In the purificn. of grinding and honing emulsions by filtration, in which the honing emulsion is passed through an accumulated filter aid bed, the novelty is that the grinding sludge in the grinding emulsion is used as the filter aid for filtering the honing emulsion. Build-up of the filter aid bed, for filtering the honing emulsion, is effected by feeding grinding emulsion directly until the bed is formed or by use of dry grinding sludge recovered from the grinding emulsion. The grinding and honing emulsions contain the same components but at different concns. USE/ADVANTAGE - For filtering emulsions from the grinding and honing e.g. of steel. Optimal filtration of the honing emulsion is achieved at low cost without the use of expensive and hazardous filter aids.

Pipe jamper device for overhead transmission line and fabrication thereof

Abstract: PURPOSE:To adapt to the environment easily by honing the surface of aluminum with a liquid material dispersed with alumina powder or sulfur powder thereby roughening the surface and then coloring the surface of the aluminum with impurities in the aluminum. CONSTITUTION:Surface of a member such as an aluminum pipe or an aluminum angle is subjected to honing with a liquid material dispersed with abrasive such as alumina powder and sulfur powder thus roughening the surface with average roughness of 0.5-5' and maximum roughness of 5-50mum. The abrasive may include silicon carbide, as well as alumina powder, having grain size of #60-300 and the sulfur is added by 0.1-10wt.% with respect to the abrasive, where the apparent volume of the abrasive and the sulfur is 15-40% with respect to the water. Honing is carried out under the pressure of 2-6kg/cm . Surface of the aluminum member is colored with the impurities in the aluminum and the sulfur through the surface treatment. Thus treated aluminum member is employed in the fabrication of pipe jamper. According to the method, a jamper having brightness suitable to the environment can be fabricated easily.

Working disc for lapping, honing and polishing machine.

Abstract: Working disc for lapping, honing and polishing machines, having a backing disc and a working layer attached to the backing disc, the working disc consisting of individual disc segments which are firmly but detachably fastened to the backing disc in several rows in an annular manner at a slight predetermined distance from one another.

Internal gear honing stick and manufacture thereof

Abstract: PURPOSE:To stabilize tooth profile and manufacture products of fixed quality by making an internal tooth honing stick itself out of metal, and electrodepositing abrasive grains made of CBN on the tooth surface CONSTITUTION:At first an external tooth honing stick 3 is formed, by electro- depositing abrasive grains 2 made of CBN in a single layer on the tooth surface of a master gear of external tooth Next, a gear 4 of internal tooth to be honed is machined with the external tooth honing 3 to form an internal tooth gear 5, and similarly abrasive grains 2 made of CBN are electrodeposited in a single layer on the tooth surface of the internal tooth gear 5 to form an internal tooth honing stick A Hereby, because the internal tooth gear is accurately machined, the internal tooth honing stick which is manufactured by uniformly electrodepositing grains made of CBN on the tooth surface of it, can be accurately formed Consequently, honing accuracy with the internal tooth honing stick can be remarkably improved

Method and machine for finishing a bore in workpieces

Abstract: For finishing workpiece bores, for example when honing, the infeed path of working parts of the tool can be set, so that the finishing is ended after a certain infeed path has been reached. Prior setting of the infeed path using a calibrating ring into which the tool is inserted is known. In order to improve the dimensional accuracy achievable therewith of the finished bores, according to the invention the infeed path is determined in accordance with the infeed force which occurs on a workpiece directly before the finished size is achieved, and this infeed path is used for the next workpiece to be finished as a criterion for switching off the infeeding. As a result, changes in operating conditions can be taken into consideration, for example different cutting behaviour of the workpiece working parts.

Spherical surface honing method

Abstract: PURPOSE:To provide a spherical surface honing method, which can obtain a high sphericity and which can perform the honing and the measurement of the sphericiry simultaneously. CONSTITUTION:Three axes 1, 2, 3, which cross each other at the spherical center 0 of a spherical ball with an angular distance of 120 degrees, are fixed on the same flat surface, and three grinding wheel shafts 4, 5, 6, in the tips thereof an annular grinding wheel 8 is fixed respectively, are provided. These grinding wheel shafts 4, 5, 6 are made to go forward to hold a spherical ball to be processed with three grinding wheels, and each grinding wheel 8 is rotated and pushed for polishing to the spherical ball to be processed at an equal pressure. At this stage, simultaneously with the rotation of the grinding wheel shafts, one of the grinding wheel shafts is oscillated on the flat surface at a right angle against the flat surface, which includes the described three axes, and including a rotary shaft of the grinding wheel shaft around of the spherical center, and simultaneously, the other two grinding wheel shafts are oscillated integrally, and the spherical ball to be processed is rotated for processing. Furthermore, a probe is arranged on the diameter of the flat to be processed in the vertical direction against spherical ball surface including the three axes.

Honing device for pitch hole

Abstract: PURPOSE:To quickly process a correct pitch hole on the part to be worked, by arranging positioning pins inserted into one part of pitch holes of a jig plate and that of the part to be worked, and a tool guide provided on the lower face of the other part of the pitch hole of the jig plate. CONSTITUTION:A positioning pin 9 erected on a plate like jig plate 8 is inserted into the piston pin inserting hole 4 of a connecting 3. Then, a crank pin insertion hole 5 which is the other part of a pitch hole of the connecting rod 3 is interfaced with the other part of the pitch hole 7 of the jig plate 8, and a honing tool 1 is descended from the upper part thereof. And, the tip of this honing tool 1 is interfaced with the guide hole 10 of a tool guide 11 fixed to the lower face of the jig plate 8. Simultaneously with the rotation of the housing tool 1 a grind-stone 2 is expanded, and the internal surface of the crank pin insertion hole 5 of the connecting rod 3 is subjected to honing.

Working method of semiconductor substrate

Abstract: PURPOSE:To improve gettering capability without increasing damage by a method wherein, after a step-difference is formed on a surface to be turned into the back surface of a substrate by patterning using photolithography, a strain surface is formed on the above surface by liquid honing CONSTITUTION:A surface which is finally turned into the back surface of a silicon wafer 1 whose both surfaces are etching surface is coated with photo resist 2 By using an ultraviolet ray irradiation equipment 4, the photo resist 2 is irradiated with ultraviolet rays, via a mask 3 for patterning Further, while a part of photo resist 2 is left, HF-HNO3 system etching is performed and the residual resist 2 is exfoliated Next, by jetting, eg precipitatable silica aqueous solution, liquid honing is performed Thus a wafer 1A having back surface strain can be obtained