Showing papers on "Honing published in 1993"

Characterization of Surface Texture Generated by Plateau Honing Process

Abstract: The plateau honing operation is being widely used for finishing of cylinder liners for internal combustion engines Plateau honing has been shown to significantly reduce the costly running-in period due to the fact that very little further modification of the texture is required once the liner is put into operation In order to better understand, control, and ultimately “engineer” plateau honed surfaces, a comprehensive means of characterizing this texture is required In this paper the techniques currently used are briefly reviewed and an alternate approach is proposed The proposed approach is based on analyzing the cumulative distribution plot on a normal probability graph

Hand-held ice skate blade sharpener tool

Abstract: A hand-held ice skate blade sharpener tool is provided which includes a configuration for honing, concurrently, the hollow groove and the side walls of an ice skate blade, to dress the edges of the blade in situ, at any convenient time. The tool has a guide to accept the blade's hollow surface and its edges, and to align same with the honing surfaces of the tool. An extruded housing of plastic or like material surrounds the honing surfaces and is of a shape to provide a grasping surface while protecting the hand from the sharp edges of the skate blade. The entire assembly is relatively light weight and relatively small, thereby rendering the device reasonably inexpensive to manufacture. The tool is intended to be disposable.

Method of finishing a surface of a workpiece

Abstract: A method for finishing surfaces of workpieces includes a honing process with at least two method steps. In one of the method steps the surface, for example, the inner wall of a bore, is honed to a predetermined final dimension whereby a very fine structure with minimal depth of honing traces is generated so that a great portion of the surface functions as the supporting surface. In a further method step, which can be performed before or after the finishing-honing step, crossed grooves are provided in the surface by subjecting the surface to a stream of a medium, especially a laser, whereby the pattern of the grooves provides a lubricant reservoir for the future use of the workpiece. The treatment with a stream of a medium does not cause deformations at the edges of the grooves. This ensures an optimal distribution of the lubricant.

Honing tool and method of making

Abstract: Honing tools and methods of making such tools utilize a compact bundle of abrasive containing plastic monofilaments projection a relatively short distance from a holder with the compacted tips forming the working face of the tool. The bundle may be secured to the holder by a thin layer of adhesive or by a clinched or swaged girdling lip or rim on the holder which embraces the bundle. In addition, the bundle is further infused with an elastomer, preferably foamed. The bundle is enclosed in a mold which may be part of the clinching process and an elastomer is injected into the mold to infuse and encapsulate the bundle. The encapsulation fills the interstices of the bundle and form an integument around the bundle in effect making the tip action tool into a solid yet elastic block. This enables the abrasive monofilaments to have a higher abrasive loading since they are additionally supported by the matrix, and the tool to be applied at higher pressures. The matrix may be injected through the working face, the bottom of the holder or through mechanical anchor holes in the sides of the holder.

Method of wet honing a support for an electrophotographic photoreceptor

Abstract: An electrophotographic photoreceptor is disclosed, including a substrate having thereon a photosensitive layer, wherein the substrate is subjected to a wet honing treatment with an abrasive agent which has a Knoop hardness of 1500 to 2900 kg/mm2, a 50% particle size of 5 to 55 μm in terms of cumulative percentage, and a bulk specific gravity of 0.75 to 1.6 g/ml, at a spraying speed of 20 to 75 m/sec.

Hand held abrasive disk

Abstract: A hand held abrasive disk for deburring, honing, finishing and polishing, or sharpening a material that can be easily held in one's hand. The abrasive surface has a concave section for receiving the filings from the abraded material. A cap is releasably attached to the non-abrading surface to prevent irritation of the user's hand and to prevent damage to the surface upon which the stone is set.

Modular expandable honing tool

Abstract: A honing tool or mandrel mountable for rotation on a honing machine comprising a tubular abrasive sleeve member retained coaxially within a modular tubular honing assembly having an opening or passageway extending the entire length therethrough adaptable for insertably receiving an elongated expander member positioned for axial movement therewithin. The modular tubular honing assembly includes a drive member for attaching to a typical honing machine, a cage member adaptable for slidably receiving the abrasive sleeve member, and a retainer member for holding the abrasive sleeve member in operative position within the cage member. The abrasive sleeve member has inner and outer surfaces, the inner surface being conically tapered over its entire length while its outer surface includes a plurality of circumferentially spaced longitudinal projections positioned adjacent longitudinal channels, each projection including a honing surface having abrasive particles located thereon. The abrasive sleeve member also includes an elongated slot extending along its entire length on one side thereof which enables such member to uniformly radially expand and contract when the expander member is axially moved therethrough, the expander member having at least a portion of its outer surface which extends through the abrasive sleeve member likewise tapered at the same conical taper rate as the taper associated with the inner surface of the abrasive sleeve member for making surface-to-surface contact with the tapered inner surface of the abrasive sleeve member. Axial movement of the expander member within the abrasive sleeve member changes the diameter of the sleeve member uniformly along its entire length during a honing operation.

Apparatus for microfinishing

Abstract: The invention relates to an apparatus for fine-working or microfinishing of workpiece surfaces, particularly rotationally-symmetrically moved workpieces with oscillating or rotating tools such as honing stones or fine polishing stones, which are in-fed against the workpiece. Dependent on a measured parameter proportional to the machining force, the tool infeed is controlled such that a continuous workpiece material remove with constant removal speed is achieved. The reaction force is measured at any point in the flux of force to determine the machining force.

Honing process and machine for finishing gear teeth - has abrasive gear hone in mesh with workpiece gear and electronically coupled spindles so that pitch errors in gear can be measured and corrected by modifying relative speeds

Abstract: The gear (1) to be finished is rotated in mesh with the honing tool (3) which is in the form of an internal gear with abrasive teeth which remove metal from the workpiece gear during rotation. The spindle drives of the workpiece gear and the honing tool are electronically coupled. Before machining takes place, the honing tool is rotated in mesh with the workpiece gear, which is allowed to rotate freely under no load. The deviations from true angular displacement of the workpiece gear are registered by the control system. The electronic coupling is then engaged and during machining uses the stored information on the gear errors to modify the relative speeds in a way that varies the metal removal rate and corrects the overall pitch error of the gear. USE/ADVANTAGE - High gear quality. Short machining time. Suitable for high volume production.

Shaving and honing principle for elliptic gear and machine tool thereof

Abstract: The present invention provides shaving and honing principle for elliptic gear and design scheme for driving system of special shaving machine and honing machine. Its main feature is that the principal motion of the said machine tool is a planetary motion with the same revolution and rotation directions, where the angular speed of rotation is one half of that of revolution, the two motion axes are parallel, and the spacing between two axes is one half of the difference between the major and minor semi-axles of pitch curve of elliptic gear. The said principal motion provides conditions for realizing conjugacy of the pitch curve of elliptic gear to the pitch curve of a freely-rotable cylindrical gear tool and thus for shaving and honing technology of elliptic gear.

Device for sharpening multiple fish hooks

Abstract: A hand-held device is described for simultaneously sharpening the points of multiple fish hooks, particularly double and treble hooks in which the concave hook sharpening member is provided with abrasive surfaces for honing the hook points by longitudinal movement of the hook in the device.

Grinding wheel for finishing gear

Abstract: PURPOSE: To easily provide a gear having excellent pitting resisting performance in a grinding wheel for finishing the gear after heat treatment by fining reltively the grain size of abrasive grains constituting the tooth top side and roughening relatively the grain size of abrasive grains constituting tooth bottom side. CONSTITUTION: A gear honing grinding wheel 1 has the shape of an internal gear type gear and abrasive grains made of molten alumina and bound by a ceramic binder. Then, the gear honing grinding wheel 1 is formed to have a structure of two inner and outer layers consisting of a rough grain part 2, i.e., 120-180 mesh of the abrasive grains and fine grain prart 3, i.e., 240-320 mesh of the abrasive grains. the tooth bottom side of the grinding wheel 1 is formed of the rough grain part 2 and the tooth top side is formed of the fine grain part 3 respectively. The grinding wheel 1 is adapted to mesh with a work gear 4 subjected to shot peening after carbonizing and quenching. While a water soluble working oil agent (grinding liquid) is supplied, the grinding wheel 1 is rotated to carry out the honing work of a gear 4. COPYRIGHT: (C)1995,JPO

Surface modification of ceramic materials using excimer lasers

Abstract: In ceramics processing, the final machining steps for surface loaded devices have until now been mechanical in nature. Techniques such as turning or grinding, followed by finishing, lapping, honing, or polishing, are usually sufficient to produce the desired surface roughness. The lifetime of a ceramic component is in most cases determined by its surface features. Crack initiation often occurs at machining marks because the stress intensity factor of such defects results in higher stresses in the surface on loading. If these stresses exceed the material's strength, failure of the workpiece will occur. Depending on the actual conditions in service, various combinations of surface properties, e.g. roughness, coefficient of friction, or the absence of porosity, are required. Irradiating the surface with an excimer laser is a contact free, optical process that seals the surface with simultaneous smoothing and reduction in surface porosity. Results for laser treated alumina samples of different puriti...

Automatic honing apparatus

Abstract: An automatic honing apparatus for honing the internal surface of a cylindrical member has a wheel member for tightening the honing stones against the internal surface. A brake assembly is associated with the wheel member, and when activated contacts the wheel member and when de-activated releases the wheel member. A sensing device detects the load on a first motor and activates or de-activates the brake assembly in response to preset motor load values. As the load on the first motor increases and decreases, the sensing device cycles the brake on and off to tighten the honing stones. A second motor drives a carriage assembly forward and backward to run the honing stones in and out of the cylindrical member to hone the entire internal surface of the cylindrical member.

Surface machining method of aluminum bore

Abstract: PURPOSE:To provide an aluminum bore which is favorable in wear resistance with less engine oil consumption. CONSTITUTION:When a surface of an aluminum bore 1, where a hard grain 2 is dispersed over at least a sliding part, is machined by a honing machine provided a honing stick in a spindle doing reciprocation and rotation, this aluminum bore surface machining method is featured that the spindle is rotated in either direction of right or left as reciprocating it and the bore surface is machined, and then the spindle is rotated in reverse to the rotation direction and the bore surface is finished by the honing stick.

Method and honing tool for making tapered bores

Abstract: of EP0569926A process for producing conical bores on a work piece by means of a honing tool (1) which has a central carrying body (2) and is arranged, by means of said body, on the spindle (41) of a honing machine. Said process makes possible the production of continuously smooth cone surfaces by the honing surfaces being guided, essentially on spiral paths, in accordance with the predetermined cone inclination until the predetermined cone profile has been achieved. The average cutting speed is held at an essentially constant value by a computer-aided control of the displacement speed, of the speed of widening in the radial direction and the circumferential speed. A honing tool which is particularly suitable for carrying out the process has, distributed symmetrically on the carrying body (2), segments (5) which are mounted such that they can pivot in radial planes, carry radially outwardly pointing honing elements (20) and the pivoting movement of which can be controlled by means of a widening device (21). As drive of the widening device (21) there is provided a push rod (48), extending through the honing spindle (41), designed as hollow shafts, and drive rod (42), with a circulating-ball-screw mounting (50) in the region of the drive by an electric motor (56) and a reduction gear mechanism (52).

Device for honing workpieces with more than one axial bore - has work piece holder and multiple tool with drive and guide and has alignment device for lining up work piece, guide and tool

Abstract: The device has a work piece (2) holder and a honing tool (13) with a drive and guide which has one guide element (4,5) on both axial end faces of the tool. There is an alignment device to line up the work piece and guide, both guide elements being lined up separately. The work piece is a crank shaft housing (8) and the bores are positioning bores for the crank shaft. The tool used is a multiple tool so that all the bores are worked on simultaneously. By using a guide element, the tool is aligned opposite the work piece before the honing process begins. USE/ADVANTAGE - For hydraulic control valves or for crankshaft housings for vehicles. The axes of the surfaces to be worked is better positioned.

Finish boring method for high-silicon aluminum bore

Abstract: PURPOSE:To provide a cylinder bore of good workmanship, in which the rate of crushing of initial crystal silicon is low in the honing process as post- processing and initial crystal silicon is sufficiently educed on the inner wall surface, by optimizing the processing conditions and suppressing the crushing depth of the initial crystal silicon. CONSTITUTION:An inner wall surface 3a to bound a cylinder bore 4 of a high- silicon aluminum cylinder block 3 is formed through the finish boring process using a boring bar 1 equipped with a multi-crystal diamond chip 2 having a cutter tip radius of 0.1-0.25mm, wherein the tool feeding speed is set between 0.05-0.15mm/revolution. The other items of the processing conditions may remain the same as conventional - i.e., the peripheral speed is 250-400m/min and depth feed of tool is 0.1-0.5mm as increment of the bore (d).

Combined multiple-spindle honing, drilling, reaming and toothing device

Abstract: The utility model relates to a combined multiple-spindle honing, drilling, reaming and tapping device The utility model is designed for that the cutter seat of the fixed or gimbaled drilling tapping machine can not adapt to different cutting producing pieces, or in order to adapt to various different cutting work pieces, the time and the labor are wasted, and an additional drilling jig is matched on the holder in order to adjust the cutter seat The utility model is characterized in that a reference hole with the same cutting position of the cutting work piece is arranged on the machine seat, the cutter seat is directly fixed on a bearing seat, the bearing seat is fixed on the reference hole arranged on a jig plate, the cutting work can be carried out immediately, and when the utility model is used for the cutting work pieces at different positions, the jig plate with the same cutting position of the cutting work piece is needed to be provided without matching with the drilling jig and the holder to adjust

Gear finishing device

Abstract: PURPOSE:To process accurately while rotating at a high speed as the driving side to a gear to be processed, by forming a rotary bearing with three rotary rollers arranged along the periphery of an inner tooth gear form grinding wheel at equal intervals. CONSTITUTION:When a gear to be processed W is driven to rotate through a driving motor 6, a grinding wheel body 13 is also rotated together with the rotation of the gear to be processed W. By the sliding between the gear face of the gear to be processed W and the gear face of a grinding wheel 16 in the relative rotation, a honing process is carried out. Since the gear to be processed W whose diameter is smaller than that of the grinding wheel body 13 is rotated by the driving motor 6 in this case, the rotation is carried out at a speed higher than the conventional device, so as to improve the machining capacity. And by a rotary bearing which consists of three rotary rollers 17, the rotating friction is reduced, and the grinding can be finished accurately without generating an unvalance of the gringing amount. Furthermore, the engaging part of the grinding wheel body 13 and the machined gear W is positioned at the central part of two rollers 17, in this case, and the basic function as a bearing is increased.

Gear honing method and device

Abstract: PURPOSE:To enable stable tooth surface accuracy to be obtained after machining a workpiece, regardless of dimensional dispersion existing before machining the workpiece. CONSTITUTION:This method and device are related to a machining system where a workpiece 10 of external gear form and a grinding wheel 30 of internal gear form are made to rotate under engagement with each other and, then, the grinding wheel 30 is axially fed for machining the surface of a workpiece 10. In this case, a grinding load change during machining at a constant axial feed speed is detected in advance with a displacement sensor 38, and the axial feed speed is changed so as to reduce the grinding load change at the next machining process. Otherwise, a detected grinding load upon the finish of the machining process is saved and the next process is started on the basis of the saved load. Or, a grinding load is detected at the machining process, and the axial feed speed is controlled at the process, so as to keep the detected load near a grinding load at the time of starting the process.

Work positioning method for gear honing device and its device

Abstract: PURPOSE: To provide a gear honing device making the accurate positioning in the rotating direction of a work with a simple structure. CONSTITUTION: The positioning in the rotating direction of a work 10 is made to engage an external-gear work 10 and an internal-gear grinding wheel without trouble in this method and device. A distance sensor 38 is arranged at the position facing the tooth flank of the work 10. The work 10 is rotatively driven by a work drive motor 34, and detection signals of the distance L by the distance sensor 38 and a detector 42 are fed to a comparator 44. Positions of the teeth of the rotating work 10 are grasped from the detection signals. When the positions of the teeth coincide with the positions set by the orientation position setting signals, the rotative drive of the work 10 is stopped by the control signal of a control device 40. COPYRIGHT: (C)1994,JPO&Japio

Compound abrasive grain tool

Abstract: PURPOSE:To dispense with an expensive equipment such as a honing board and to extend the service life of a tool, by providing an abrasive grain tool to finish the inner surface of a hole with extreme precision, to require no honing finish which was necessary after a finishing process when the inner surface of a hole is finished precisely, and to accomplish the finishing process in one process. CONSTITUTION:This compound abrasive grain tool has two abrasive grain areas composed of an electrocoating member 4 formed by fixing and holding the hard abrasive grains 41 such as a diamond and a CBN at the tip side installed on a tool main body 3, in a single layer and a high density by an electric plating, and an impregnated member 5 formed by fixing an impregnated tip 51 made by mixing and sintering hard abrasive grains 55 and a metal binder in the adhesion or the soldering.

Improved structure of multifunction deep hole cutting composite machine

Abstract: The utility model discloses an improved structure of a multifunction deep hole cutting composite machine, particularly using an independent machine table and providing with the organizational design of the processing of deep-hole drilling, boring, reaming, boring and honing, a horizontal cutting central machine, a boring machine, a horizontal broaching machine, etc The utility model is mainly composed of a machine table, a combined motive power tailstock, a cutting tool centre frame, an arbor support, a work platform, a sliding track, etc The workpiece can be locked immovably, while the cutting tool can rotate to proceed to the cutting mode of feeding Therefore, the workpiece can not be restricted by the profile and the hole site, and the utility model can proceed to a plurality of composite cutting processing to the workpiece