Showing papers on "Honing published in 2001"

Apparatus and method for reducing disc surface asperities to sub-microinch height

Abstract: A honing head for microburnishing surface of a recording/reproducing disc to a smoothness at which asperities are limited to submicron heights including a hardened contact bearing surface having an array of depressions with abrupt trailing edges interconnected by recessed channels leading outwardly from the honing head. The array of channels span a band in which an asperity may be present, and the sharp edges shear off the asperities within the band which extend above the chosen submicroinch height, with the separated particulates being passed through the recesses and channel system to the outer edge of the honing head. The trailing edges act to shear off the unwanted heights of the asperities, while the recesses enable pressure differentials and air flows to direct the separated particulates outwardly relative to the disc, centripetal forces of rotation bearing the particulates from the disc. A diamond-like coating on the entire contact bearing surface and the recesses aids in reducing wear and the stiction of the smooth surfaces to the disc that is being burnished. This arrangement has the further advantage that the honing head may be prepared by photomicrolithographic techniques to generate the array of recesses on a production basis, with the recesses having precisely determined depths and perpendicular trailing edge walls. Ion milling and other known techniques can be used to remove the materials in the chose patterns quickly and efficiently.

Grinding machine and method of sharpening blades

Abstract: The invention relates to a grinding machine for sharpening (honing) blades ( 4 ) of knives, scissors, hand tools or the like, with a magazine, a feed station ( 1 ) or similar, and with a honing station ( 2 ) for the blades ( 4 ), which has two contra-rotating grinding wheels ( 6 a, 6 b ). In order to automate a method to be performed using the said machine whilst maintaining a high degree of machining accuracy, it is proposed to use a robot ( 3 ) with memory-programmable control having a manipulator ( 5 ) moveable in at least four of the six possible translatory and rotational degrees of spatial freedom, a gripper head, which has a holding device for accommodating and moving a blade ( 4 ), being fixed to the manipulator ( 5 ).

Milling cutter for adhesive material

Abstract: PROBLEM TO BE SOLVED: To provide a milling cutter for adhesive materials having an improved tool life and achieving high precision surface roughness by preventing progress of wear and hardly allowing fusion and adhesion to occur. SOLUTION: In the milling cutter 1 for adhesive materials which has a hard coating layer 3 on a base material 2, the base material 2 is composed of a bond phase including one or more iron group metals, and a hard phase including one or more compounds selected from the groups consisting of carbide, nitride and oxide of elements of groups IVa, Va, VIa in the periodic table, Al and Si, and their solid solutions, and a cutting edge ridge 4 is provided with a chamber honing part of which the outermost layer is partially different from a hard coating layer 3. The outermost layer in the central part 4a of the chamfer honing part is a titanium compound layer or a zirconium compound layer, and the outermost layer in a first region 7a including a rake face side boundary region 7 and a second region 8a including a flank side boundary region 8 is an aluminum oxide layer.

Distal end honing device

Abstract: Honing devices configured for use with a source of pressurized fluid. The honing device includes a honing body with a base extending along an longitudinal axis. The base may include a distal end and a proximal end adapted for fluid communication with a source of pressurized fluid. The honing body further includes a plurality of leaves with a first end attached to the distal end of the base and a second end spaced from the distal end. The outer surface of at least one of the plurality of leaves includes an abrasive work engaging surface. Pressurized fluid may encourage the second end of at least one of the plurality of leaves to move away from the longitudinal axis in order to hone the interior surface of the workpiece. Methods of honing the interior surface of a bore hole are also provided.

Method for the surface treatment of a tribological coating

Abstract: The present invention relates to a method for the surface working of a tribological coating of a supereutectic aluminum-silicon alloy or an aluminum-silicon composite material with a coating structure, wherein the surface is reworked after the production of the coating. Provision is made according to the invention that the surface is machined dry, without lubricant, in a one-step process, a cutting tool with a cutting material containing diamond being used. This can be followed by an additional working process. Preferably a combination process of dry machining and one-step finish honing or one-step texturing by radiation is provided.

Eddy Structures Induced Within a Wedge by a Honing Circular Arc

Abstract: In this paper we outline an expeditious numerical procedure to calculate the Stokes flow in a corner due to the rotation of a scraping circular boundary. The method is also applicable to other wedge geometries. We employ a collocation technique utilising a basis of eddy (similarity) functions introduced by Moffatt (1964) that allows us to satisfy automatically the governing equations for the streamfunction and all the boundary conditions on the surface of the wedge. The circular honing problem thereby becomes one-dimensional requiring only the satisfaction of conditions on the circular boundary. The advantage of using the Moffatt eddy functions as a basis in wedge geometry is clear and the technique greatly reduces many of the concerns with accuracy and time expenditure associated with alternative numerical methods. An investigation of the details of the eddy structure for our particular geometry is presented.

Honing work method, grindstone slitting device of honing machine and honing machine

Abstract: PROBLEM TO BE SOLVED: To provide honing work technology capable of shortening working cycle time and carrying out precise slitting control of a honing grindstone in forcible slitting (quantitative) working type honing work. SOLUTION: Slitting quantity of the honing grindstone 10 is controlled in accordance with a measured measuring value by measuring torque T of the honing grindstone 10 or both of the torque T and cutting thrust force P in the forcible slitting (quantitative) working type honing work. Consequently, it is possible to automatically and certainly carry out detection of a boundary point to start a honing work process from a speedy extension process of the honing grindstone 10, to shorten working cycle time of the honing work and to precisely control slitting motion of the honing grindstone 10 in the honing work process. COPYRIGHT: (C)2003,JPO

Non-marking web conveyance roller

Abstract: A non-marking web conveyance roller has a generally irregular surface with a plurality of rounded up features that promotes superior venting of entrained air The surface finish of the roller, formed by a thermal spray process, prevents the formation of impression and honing defects on the conveyed web

Method of surface treatment, decorated article and electronic equipment

Abstract: PROBLEM TO BE SOLVED: To prevent a surface of Ti or a Ti alloy from being stained with a fingerprint or flawing and also to improve the quality of an outward appearance by enhancement of the degree of whitening and others. SOLUTION: An exterior component 10 of a clock constituted of Ti or a Ti alloy has a surface 10a subjected to machining such as planishing, honing or scoring and a Ti oxide layer causing blacking is formed on the occasion. This oxide layer and other foreign substances are removed by chemical polishing with immersion in an etching solution or electrolytic polishing, for instance, and then a transparent protective layer 12 is formed on the surface 10a by application and drying of a glass coating solution, for instance. The etching solution is constituted of a mixture containing HF, HNO3 and H2SO4 preferably.

Apparatus for high tolerance brush honing

Abstract: The present invention relates to a honing method and apparatus which provides greater control over the edge shape, as well as reductions in the effort required to hone multiple edges on workpieces. The invention accomplishes these improvements by controlling the speed of the abrasive wheel, as well as the orientation and position of the workpiece prior to and/or while it is in contact with the abrasive brush. This provides for greater control over the hone shape, hone size, and hone distribution along all the cutting edges of the tool.

Tool having honed cutting edge

Abstract: The present invention relates to a honing method and apparatus which provides greater control over the edge shape, as well as reductions in the effort required to hone multiple edges on workpieces. The invention accomplishes these improvements by controlling the speed of the abrasive wheel, as well as the orientation and position of the workpiece prior to and/or while it is in contact with the abrasive brush. This provides for greater control over the hone shape, hone size, and hone distribution along all the cutting edges of the tool.

Cylinder block and its honing work method

Abstract: PROBLEM TO BE SOLVED: To ensure seizure resistance and abrasion resistance, by protruding a primary crystal silicon to a cylinder bore inner surface with a high silicon cylinder block without applying etching work. SOLUTION: This cylinder block, consisting of an aluminum alloy crystallizing primary crystal silicon 7 of 3 to 10 μm average grain size, applies honing work of Ra=0.05 to 0.3 μm surface roughness to a cylinder bore inner surface 5.

Production of tribological surfaces on a workpiece used in production of cylinder faces comprises finely processing a surface of workpiece, removing surface layer, finely grinding surface and obtaining hard material phases

Abstract: Production of tribological surfaces on workpiece comprises: forming workpiece made from material consisting of metal matrix with embedded hard material phases; finely processing one surface of workpiece; removing surface layer; finely grinding surface modified by hard material phases; and obtaining hard material phases in plateaus of same height. During the formation of the tribological surfaces, the hard material phases are exposed on the periphery whilst the metal matrix is removed. An Independent claim is also included for a device for carrying out the process. Preferred Features: The hard material phases are exposed by honing to a depth of 0.15-0.3 mu m using a honing strip containing grinding particles made from fused alumina or cast steel with a matrix made from a chemically foamed epoxy resin.

Honing processing device

Abstract: PROBLEM TO BE SOLVED: To provide a honing tool capable of prolonging a life of the honing tool and obtaining high dimension accuracy for a long period of time by inhibiting a reduction of surface roughness of polishing processing. SOLUTION: The honing processing device is provided with a work retaining tool for retaining a cylindrical work; a honing head disposed advanceably/ retreatably against the work retaining tool and butted to an inner periphery surface of the work at an end of the work retaining tool side; a honing tool having a guide part of a larger diameter than an outer diameter of the honing head at a center side; a positioning plate having a guide hole engaged with the guide part of the honing tool and carrying out positioning in an axis vertical direction of the honing tool; and a lubricating means for feeding a lubricant to the inner periphery surface of the work through the guide hole of the positioning plate. An axially extending induction groove is formed on the inner periphery surface opposed to the guide hole of the positioning plate.

Working cell for automatic honing system and automatic honing system

Abstract: PROBLEM TO BE SOLVED: To provide a compact and light automatic honing system with the simple structure facilitated in decision and change of the number of man-hours, facilitated in design, and capable of lowering the device cost. SOLUTION: A working cell A is provided with the unit structure including a carrying device 10 forming a part of a work carrying passage 1 of an automatic honing system, a honing board 5, and a control unit for controlling them for interlock. The working cell A is installed in a honing working part of the automatic honing system freely to increase or decrease the number thereof for installation. A carry-in cell B and a carry-out cell C are arranged in both sides of the plural working cells A (A1, A2, A3) while aligned in a straight line so as to form the automatic honing system.

Electrolysis dressing for honing grindstone, involves impressing preset voltage between grinding stone, separated from grindstone processing surface and electrode with simultaneously supply of electroconductive fluid

Abstract: Metal bonded grinding wheel (2) containing grinding particles and electroconductive bonding portion is fixed to grindstone holder (6). The holder opposes electrode (8) and is separated from a grindstone processing surface by a preset distance. A preset voltage is impressed between the grindstone and electrode with simultaneously supply of electroconductive grinding fluid. Consequently, electrolysis dressing of the metal bonding portion on the grindstone surface is performed. An Independent claim is also included for apparatus for honing grindstone.

Spring constant pressure type honing head

Abstract: The utility model provides an elastic constant-pressure type honing head. The utility model is composed of a grinding head body, a constant-pressure pushing device and a constant-pressure honing device. The utility model is characterized in that the grinding head body is tubular; the left end of the grinding head body is processed with screw threads, and the right end of the grinding head body is processed with an annular groove; the annular groove is provided with a circular hole which is provided with a steel ball; the middle of the grinding head body is axially provided with a groove hole; the constant-pressure pushing device is arranged on the left end of the grinding head body; the constant-pressure honing device is arranged on the right end of the grinding head body. Compared with the honing head of the prior art, the utility model has the characteristics of reasonable design, simple structure, easy manufacture, convenient operation and use, the enhancement of work efficiency, etc.

Metal bellows and method of making it

Abstract: PROBLEM TO BE SOLVED: To provide a metal bellows given large residual compression stress to be excellent in durability. SOLUTION: A honing device 20 for performing honing in an inner surface of a metal bellows 10 is provided with a base 21 holding the metal bellows 10, a nozzle 22 projecting solid fine grains 30 from a side of an opening part 10a of the metal bellows 10, a swash plate 23 provided to be opposed to the nozzle 22, etc. The solid fine grain 30 projected from the nozzle 22, changing its direction by the swash plate 23, is projected to a bottom part inner surface 12a from a diametric direction of the metal bellows 10. This honing is performed as necessary in a condition that the metal bellows 10 is compressed in an axial line direction or in a condition that it is heated to a warm temperature region.

Numerically controlled constant force feed ultrasonic honing machine

Abstract: The utility model discloses a numerically controlled constant-force feed ultrasonic honing machine. The utility model is provided with an ultrasonic honing device. The upper end of the ultrasound honing device is provided with a rotary air joint, and the lower end of the ultrasound honing device is provided with oil stones. A spray nozzle is arranged between the oil stones. The pressure signal obtained from the spray nozzle is converted through an air and electric converter, and is sent to a computer through an active measurement instrument. A photoelectric switch sends the detected signal to the computer to control a step-by-step motor and an oil cylinder. A pinion wheel, a bull wheel, a shaft coupling and a torque and rotation speed sensor drive the oil stones of the ultrasonic honing device to expand. The utility model has the advantages of small honing force, low honing temperature, difficult blockage of the oil stone, high productive efficiency, good machining quality, etc.

Measuring bore in workpiece formed by honing tool by geometrically evaluating wall thickness signal e.g. from ultrasound sensor

Abstract: The method involves measuring the wall thickness of the workpiece in the region of the bore from at least one measurement point, to produce at least one wall thickness signal. The wall thickness signal is evaluated to geometrically characterize the bore. The measurement of wall thickness is performed by transmitting an acoustic signal and measuring the propagation time. Independent claims are also included for: (a) a measuring device (b) a honing apparatus (c) the use of an ultrasound sensor for characterizing a bore

Method for gear finishing

Abstract: of EP0631211The 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.

Non-marking web conveyance roller and method of making same

Abstract: A non-marking web conveyance roller has a generally irregular surface with a plurality of rounded up features that promotes superior venting of entrained air. The surface finish of the roller, formed by a thermal spray process, prevents the formation of impression and honing defects on the conveyed web.