Showing papers on "Honing published in 1991"

Apparatus for controlling operation of a lapping, honing or polishing machine

Abstract: An apparatus for controlling operation of a lapping, honing or polishing machine comprising at least one working disk having an abrasive means for honing, lapping, or polishing the surface of a work-piece and adapted to be driven by a variable working disk drive, at least one planetary gear member for carrying said work-piece and having teeth at its outer periphery, and inner and outer gear members in driving engagement with said planetary gear member, at least said inner gear member being driven by a variable inner gear member drive, said apparatus including a control stage for providing a control signal to said working disk drive and said inner gear member drive for controlling desired drive speeds, the improvement of which includes a computer 44 connected to said control stage for generating input signals for said control stage, which computer is arranged to calculate the speed of said inner gear member drive and the speed of said working disk drive by the following formulas: n.sub.L =K.sub.L ·n.sub.M n.sub.Δ =n±K.sub.UL ·n.sub.M' wherein K L and K UL are constants of the rolling geometry of said gear members and n L representing the rotational speed of the planetary gear member and n representing the difference between the working disk speed n and the orbital speed of the planetary gear member are preselected desired values.

Honing measuring tool

Abstract: A honing tool (1) simultaneously serving as a measuring mandrel has, apart from honing ledges (7), measuring and/or guide ledges (10), which are mounted in radially adjustable manner on the tool body (2) for increasing the measuring precision and/or for adjusting to different nominal dimensions of the hole. Thus, e.g. prior to the end of the machining of a hole, the measuring ledges (10) can be infed again and/or the desired measured value can be recalibrated by means of a calibration hole.

Semiconductor device having a die pad with rounded edges and its manufacturing method

Abstract: A semiconductor device employs a lead frame including a die pad (24) and a plurality of leads (25) provided outside the die pad, and is manufactured by sealing the die pad and its periphery by a resin after the die pad is fitted with the semiconductor chip (11). The die pad (24) is formed separately from the main part of the lead frame provided with leads, and is rounded at an entire outermost edge thereof and includes a flat plate shape. This die pad can be either formed rounded with ceramic or resin, or formed in metal and given a rounded edge through honing.

Method for honing workpieces

Abstract: A method for machining a workpiece bore in a single working stroke utilizes a honing tool with a preset honing surface fixed in a radial position corresponding to the desired end size of the bore during the work cycle and measures the finished project for calibration and repositioning of the work surface prior to the honing of a second bore during a second work cycle.

Process for plating super abrasive materials onto a honing tool

Abstract: An improved method for plating super abrasive materials onto the working portion of a honing tool, which method includes plating or otherwise coating a relatively thin layer of a composite material comprising a metal or metal alloy material having a friction reducing or lubricating type material occluded or otherwise associated therewith over the top of the bond already established between the abrasive particles and the working portion of the honing tool so as to substantially reduce and minimize the occurrence of having stock material build-up and collect between the abrasive particles, which stock build-up causes galling or scoring of the honed work surface during a honing operation. In the preferred embodiment, the composite material comprising the anti-galling coating surface is a nickel/phosphorous alloy material having micron-sized Teflon particles occluded therein. The present method substantially increases the quality of the finished work product as well as the overall service life of the honing tool itself. An improved honing tool construction is also produced through usage of the present method.

Base body for electrophotographic sensitive body and production thereof

Abstract: PURPOSE:To inexpensively obtain the base body for long-sized and thin photosensitive bodies from large to small diameters with high accuracy without cutting by subjecting an electro-resistance-welded tube to ironing and specifying the shape accuracy of the surface, the fluctuations in the wall thickness and the surface roughness thereof. CONSTITUTION:One end of the electro-resistance-welded tube is subjected to curling, then to the ironing. The tube is otherwise subjected to drawing, then to the ironing. Both ends are cut to a prescribed length and the base body 1 is formed. The materials of the electro-resistance-welded tube include aluminum, copper, stainless steel, nickel or the alloys thereof, steels, iron and steels, etc. The aluminum and aluminum alloy are more particularly preferable. The surface of the electro-resistance-welded tube is preferably subjected to processing or treating, such as grinding, polishing, honing, electropolishing or anodizing before the tube is subjected to the ironing. This base body 1 is <=0.04mm in both straightness and roundness and the fluctuation in the thickness thereof is within a + or -0.015mm range and the surface roughness (Rmax) within a 1.0 to 0.3mum range.

Method and apparatus for honing workpieces

Abstract: A method and device for honing a workpiece surface to be machined to provide a finished size and surface configuration comprising a honing tool with adjustable honing elements, the elements having a cutting zone and a calibrating zone, and also comprising a guide element with a surface sized to the finished size of the workpiece surface such that on the cutting stroke of the tool the cutting zone performs the cut and the tool is guided by the movement of the calibrated zone through the guide element and the honed surface.

Chucking apparatus for the combined working of rolling bearing rings

Abstract: In a chucking apparatus for the combined grinding and honing working of a racetrack surface of a roller bearing external ring, a first chucking device comprising a pair of glide shoes and a second chucking device comprising a hydrostatic glide bearings wherein the first chucking device the grinding is integrated as a multiple arrangement into an indexable round table while the second chucking device is capable of being moved by simple axial shifting into the honing chucking device integrated into the round table.

Machine, especially honing machine, for gauge controlled working of workpieces

Abstract: The machine, especially a honing machine, has several working stations (W1 to Wn-2) in which workpieces can be worked or honed simultaneously. By transfer in timed sequence, each workpiece can pass in succession through all stations (W1 to Wn-2) so that it is worked gradually first of all to intermediate sizes and in the final working station to finished size. So that the working operations can be corrected, for example to re-adjust the tools for wear compensation, a common measuring station (Wn-1) is provided for all working stations (W1 to Wn-2), into which measuring station (Wn-1) the workpieces, after interruption of a work cycle, can be moved in succession in a measuring cycle. Attached to the measuring station (Wn-1) is a measuring and control device (19) which determines the deviations of the workpiece size from the desired size and analyses them for the subsequent control of the individual working stations (W1 to Wn-2), in particular for the re-adjustment of the individual tools.

Process for manufacturing grinding or honing tools

Abstract: In a process for manufacturing grinding or honing tools, grinding grains are embedded in a binder consisting of a geopolymer, whereupon hardening is carried out.

Procedure for honing bore holes and honing tool for carrying out the procedure

Abstract: of EP0549821The procedure serves to hone two or more aligned bore holes which are provided inside a workpiece and are connected to one another. If such bore holes are worked simultaneously with a single honing tool, geometrical inaccuracies occur if correspondingly long honing sticks are used and dimensional inaccuracies as a result of different wear occur if two sets of honing sticks arranged one above the other are used. These disadvantages are avoided with the procedure according to the invention, in which the bore holes (2 and 3) are honed in successive working steps, the honing tool (5) working with short honing sticks (6) in one bore (2 or 3) and being guided with guide sections (9; 10) in another bore (3 or 2).

Process, machine and tool for honing work pieces.

Abstract: of EP0219825In the honing process, which is suitable in particular for blind holes or stepped bores, a honing tool (11) is moved into the bore (40) with retracted, that is non-expanded, honing layers, is expanded to the finished size in or behind the bore and performs its working stroke during the return stroke (direction 39). Chip removal takes place in a cutting zone (33) and the calibration to the finished size takes place in the finishing zone (34). The tool has pivotably arranged honing sticks. In a variant, guide strips firmly arranged between the adjustable honing sticks and having an anti-wear layer can be provided. Provision is also made to work with oscillating short strokes to machine the bottom area of a blind hole.

Laser beam machining method

Abstract: PURPOSE:To easily perform a desired laser beam machining even on a hard-to- work member, regardless of the size of the working member or a working area and also without staining the working member, by raising the absorption rate of a irradiating laser beam in reference to the laser machining method in which the laser machining is performed especially on a metal material having a high reflectance. CONSTITUTION:Recessed and projecting parts are formed on the metal working face 1 for laser beam machining. For the formation of these recessed and projecting parts, various machining methods such as press forming, grinding, honing, ultrasonic working, and excimer laser beam machining are suitable. By providing the recessed and projecting parts on the metal working face, the absorption rate of the laser beam 2 is raised on an object to be worked and the desired laser beam machining is easily performed even on the hard-to-work members.

Post-process surface measurement station for machine tools - incorporates vertically-stepped carrier for roughness probe introduced into workpiece with head featuring inclined annular nozzles

Abstract: A measuring platform (2) set on anti-vibration mountings (21,22) on the bed (2) of the machine carries an adjustment device (4) with a vertically movable support (9) for a surface measurement probe (11) whose feeler (12) can be introduced into a bore in the workpiece (3). A processor (15) derives control signals esp. for the delivery pressure, machining time and/or tool rotational speed, and may produce an error signal indicating out-of-range movement. USE/ADVANTAGE - With, e.g. brush honing, grinding, drilling and milling machines. Surface roughness measurements can be made and used directly for adjustment of working parameters.

Method for manufacturing abrasively-tipped flexible bristles, and flexible abrasive hones therefrom

Abstract: A method for producing, per se, individual or multiple enlarged-abrasive-globule-carrying flexible bristle(s), with each abrasive globule being firmly and fixedly, and virtually non-accidentally-removably, attached to, and thereby carried on, a corresponding tip end portion of a corresponding flexible (often nylon plastic) bristle, achieved by successive and intermixed and/or alternating multiple-adhesive-matrix-and-abrasive-particle-applicatory steps, a junction-strength-increasing step, multiple laminating and curing steps; and a multiple, composite form of the above-defined method, comprising a method for producing a flexible abrasive hone by assembling a generally similar plurality of such enlarged-abrasive-globule-carrying flexible bristles and effectively firmly mounting bristle rear end portions with respect to a bristle-holding base in a relatively evenly spaced-apart manner and with the bristle tip end portions and the bristle rear end portions being generally similarly longitudinally-spaced, along bristle lengths, such that each enlarged abrasive globule of the plurality thereof, and all of same, is/are positioned at generally similar bristle-length-spaced forward honing locations in closely-laterally-adjacent-to-each-other, but individual and non-interfering positions, and, thereby, together defining an effective multi-element, common, flexibly-supported honing surface.

Grinding device for honing rails

Abstract: Described is a device for honing rails (5), in particular rail joints, the device having an abrasive disc (3) which is held in a mounting (1) and which can be brought into contact with the surface of the rail. The abrasive-disc mounting (1) is supported by the rail (5) on each side of the grinding point (6). To ensure optimum smoothness, the abrasive-disc mounting (1) is controlled at two points located one each side of the grinding point (6) to follow a curved trajectory substantially parallel to the ideal surface of the rail (5) as well as being held at a constant distance from the actual surface.

Honing head for processing blind hole

Abstract: PURPOSE:To enhance the processing accuracy in honing of the internal circumferential surface of a blind hole, in particular the accuracy of the straightness. CONSTITUTION:Movably in the radial direction, a whetstone table 5 for honing is supported alongside the outside circumference of a cylindrical honing head body 7, and a taper cone 2b accommodate therein moves i the axial direction independently from another taper cone 1a, and thereby the stop side of the whetstone table is expanded forcedly in the radial direction with movement toward the stop side of the hole to be processed. Thus a blind hole can be processed effectively.

Elastic yarn-feeding roller in air-covering machine

Abstract: PURPOSE:To reduce the fluctuation in the tensions of a fed elastic yarn in an interlacing zone by treating the surface of a feeding roller in a specific state. CONSTITUTION:The metal matrix surface of a roller 1 for rotating an elastic fiber bundle 4 to take out and feed an elastic fiber 8 is plated with industrial chromium and subjected to a honing processing in a mirror-polishing state to give a surface roughness of 0.8S-3S, thereby reducing the fluctuation in the tensions of the fiber in a drawing zone and an interlacing zone, the generation of drawing irregularities and the breakage of the fiber when threaded.

Process for machining the inner surfaces of bores

Abstract: According to a process for machining bores of workpieces, a honing tool provided with an abrasive coating and radially pressed against the wall of the bore carries out simultaneous rotary and reciprocal movements. In addition to the reciprocal and rotary movements (2, 3), the honing tool (1, 100) vibrates with a high-frequency, short-hub natural vibration (31, 22) excited by ultrasonic oscillation in the range between 16 and 40 KHz.

Device for holding a workpiece during honing

Abstract: Device for holding a workpiece to be lapped while it is being lapped, which comprises a fixed bearing part (5), a bearing part (6) movable relative to the first in the lapping direction, means for clamping the workpiece to be lapped (1) between the movable bearing part and the fixed bearing part, and means (14) for ensuring a preclamping of the workpiece to be lapped. The preclamping means consist of means (14) for limiting the displacement of the movable bearing part (6).

Cylinder wall surface treatment

Abstract: The surface finish of the internal cylinder wall of an internal combustion engine is produced by honing the surface and then after honing applying a sealing composition 14 to the surface to at least partially fill the valleys 12 left in the surface by the honing operation. After the sealing composition has set, pistons with piston rings are assembled in the cylinders and the engine is then run. Peaks 16 will then be removed by the rubbing action of the piston rings. By coating the surface in this way, oil consumption is reduced, which in turn leads to a reduction in engine emissions.

Control circuit for honing machine - uses tool travel to control initial honing and force exerted on tool to control final honing

Abstract: The honing machine for fine finishing of workpiece surfaces has a tool (3) with a body (20) with stones (18,19) which can be adjusted by actuator (10,11). The actuator may be operated by a control circuit which is controlled by the travel of the tool or is controlled by the force exerted on the tool. The control may be hydraulic, pneumatic or electric. In this machine at least two different adjustments are employed. The initial honing operation may be controlled by the tool travel and the final honing operation may be controlled by the force exerted on the tool.

Self-biasing honing tool

Abstract: A honing tool operated by a common motor or a drill while the part being honed is held by a common vice. A spring is positioned within a tubular sleeve member that is aligned with a boss member formed on the trailing end of a conventional housing for a conventional feedup rod. The leading end of the spring bears against the trailing end of the feedup rod and urges it continuously forwardly so that honing continues for as long as the spring is allowed to bear against the feedup rod. The honing operation can be stopped at any time by pulling back on a ring member that causes the spring to be compressed when pulled back. When the spring is compressed, the bias is taken off the feedup rod and hence the cutting stone, so that the diameter of the bore being honed can be measured. In a second embodiment, the final position of the ring member is marked at the conclusion of a honing operation that is to be repeated and a stop member is set so that subsequent honing operations conclude when the ring member attains the final position and is stopped by the stop member.

Removing apparatus for needless resin

Abstract: PURPOSE:To make this apparatus small-sized and efficient by installing the following: a resin cutting and punching mechanism; a plastering mechanism used to spray a powder on an object; and a liquid honing mechanism used to spray a liquid on the object. CONSTITUTION:This apparatus is constituted of the following: a resin cutting and punching mechanism 1; a plastering mechanism used to spray a powder and to remove an inessential resin; and a liquid boning mechanism 3 used to spray a liquid and to remove the inessential resin. In addition, conveyance mechanism 5, 6 used for conveyance operations between the main parts are installed. Most of burrs which have been formed firmly are removed in a short time by using the resin cutting and punching mechanism 1; the powder is sprayed by using the plastering mechanism 2; the residual burrs which have not been removed and flushes are removed. In addition, an abrasive mixed with a liquid whose pressure has been made high by using the liquid honing mechanism 3 is sprayed; the burrs and the resin are removed completely. Thereby, the resin can be removed with good efficiency and an apparatus itself can be made small-sized.

Method for honing bore and honing machine for working said method

Abstract: PURPOSE: To heighten the quality and accuracy of a bore wall to be machined by controlling the pressing force during machining. CONSTITUTION: A position adjusting device 16 is connected to an electronic position adjustment control device 30. By the position adjustment control device 30, the position adjusting device 16 is controlled according to the pressing force preset for a working part 15 of a honing tool 1 to regulate the machining pressure, and the pressing force to the bore wall 3 of the honing tool 1 is controlled during honing machining for the bore wall.

Multifunctional small size tool machine

Abstract: The utility model relates to a multifunctional small size tool machine, comprising a turning portion and a drilling and milling portion. The spindles of the turning portion and the drilling and milling portion are respectively driven by two motors; the transmission system of the turning portion is provided with two output shafts; the two output shafts change different change gears to be connected with the leading screw of the turning portion to meet the requirements of processing various materials and work pieces with various diameters and process various screw threads with metric and English moduli. The drilling and milling head of the drilling and milling portion has a universal structure and can carry out process in optional directions and at optional angles in the travel range; when different accessories are used, the drilling and milling head also has multiple functions such as honing, polishing, cutting, grinding, etc.

Honing device and process.

Abstract: not available for EP0424419Abstract of corresponding document: WO9000462A honing device (1) which can be mounted on a conventional machine-tool (for example, parallel lathe, milling machine, boring machine) comprises a spindle (2) which rotates about an axis (AA') and which carries an abrasive element (3) mounted so as to move at least in a radial direction with respect to the axis of rotation (AA') of the spindle (2). At least one governor weight (4) mounted on an articulated frame (ABCDEF) connected to said abrasive element (3) and entrained in rotation by said spindle (2) is acted on by a centrifugal force when the spindle (2) rotates. The centrifugal force tends to move the governor weight (4) at least in a radial direction with respect to the axis (AA'). The movement of the governor weight (4) modifies the radial movement of the abrasive element (3). The honing device is preadjusted by means of a model piece. The run guide (9) and the push rod (14) are made to slide in such a manner that the piston (15) causes the abrasive element (3) to move radially until it abuts against the wall of the model piece.

Manufacture of stainless steel sheet of excellent surface quality

Abstract: PURPOSE:To obtain good surface quality without the generation of uneven brightness by casting into the cast piece of thin band-like with a continuous casting machine and performing descaling by cleaning with an abrasive grain for polishing as the pretreatment of cold rolling process. CONSTITUTION:Instead of performing the descaling by pickling as the pretreatment of cold rolling process, the descaling by cleaning with the abrasive grain for polishing is performed. Intergranular corrosion groove due to the precipitation of Cr carbide which is the cause of the uneven brightness is not generated. And the ruggedness on the surface of cast piece is made further uniform by intensifying the removement of scale and it contributes to the improvement of surface nature. That method is effective to also chromium type stainless steel in addition to austenite type stainless steel. As the descaling method by cleaning with abrasive grain for polishing, liquid honing, belt grinding, grit blasting and brush containing abrasive grain, etc., are used. Thereby, uneven brightness after cold rolling isn't generated and the stainless steel sheet of good surface quality can be obtained.

Honing method of cylinder block

Abstract: PURPOSE:To drastically restrain deformation of a cylinder bore due to heating and to enhance roundness, etc., of the cylinder bore, by dipping in a work liquid the cylinder block made of an aluminum alloy to be a work object, and executing honing on the cylinder bore part of the cylinder block in this work liquid. CONSTITUTION:A cylinder block 1 made of an aluminum alloy to be a work object is dipped in a work liquid (coolant) 4 and honing is executed on the cylinder bore part of the cylinder block 1 in this work liquid 4. The apparent heat capacity of the cylinder block 1 is thus increased. Consequently, the deformation of the cylinder bore part 7 due to heating is drastically restrained and the work liquid 4 is fed enough between the cylinder bore part 7 surface and a grindstone 5.