Showing papers on "Honing published in 1978"

Ceramic bonded grinding tools with graphite in the bond

Abstract: Ceramic bonded grinding and honing tools employing diamond or cubic boron nitride abrasive particles are improved by the inclusion of from 10 to 53%, by volume, of graphite in the bond, based on the total bond solids, including graphite. The bond must have a porosity volume less than 15% for honing applications and less than 10% for grinding wheels, preferably the graphite should be finely particulate. Applications in dry grinding and honing of hard materials are described. For dry grinding the optimum graphite content of the bond is from 34 to 45 volume percent. The bond may include crystalline filler such as alumina, zirconia, silicon carbide, or crystalline filler formed in situ by devitrification; and the abrasive particles may be metal coated. MoS 2 or hexagonal boron nitride may substitute for all or part of the graphite and metal powders may be employed to replace up to 50% by volume of the graphite or graphite substitute materials.

Combination boring and honing apparatus and method

Abstract: A boring unit and a honing unit are concurrently carried on the bed of a boring machine for performing boring and honing operations on the cylinder bores of an engine block. A unique clamping technique is employed to clamp the engine block to the bed of the boring machine while the honing device is operating on the furthest most cylinder bore and adjacent the boring unit.

Cylinder liner honing

Abstract: The honing of the inner cylindrical wall of engine cylinders or cylinder liners. Coarse honing of an inner cylindrical wall of a cylinder or cylinder liner allows more oil to remain in scratches in the wall after the piston rings pass a particular point on the wall than if the wall is fine honed. The more oil that remains in the scratches the more oil there is to burn during the expansion stroke of the piston. It is desirable to provide a relatively coarse finish (24) at one end (18) of an inner cylindrical wall (12) of a cylinder or a cylinder liner (13) and a relatively finer finish (26) towards another end (20) of said inner cylinder wall (12). A honing member (14) is provided for rotation and oscillation in contact with the inner cylinder walls (12). A first section (16) of the honing member has a relatively coarse grit surface (24) and a second section (22) of the honing member (14) has a relatively fine grit surface (26). The above mentioned oscillation and rotation of such a honing member (14) comprises an improved method for honing a cylindrical wall (12).

Precision honing mandrel

Abstract: A precision honing mandrel including a tubular honing member having a helical, straight or other shaped groove therethrough, a substantially cylindrical outer surface, a tapered inner surface, and a layer of a relatively hard wear resistant abrasive substance applied to the cylindrical outer surface, an arbor for mounting said honing member including a first arbor portion for mounting on a honing machine, and a tapered second arbor portion for receiving said honing member thereon, a guide member mounted on the opposite side of the honing member from the first arbor portion, said guide member having an end surface in abutment with one end of the honing member and a tapered inner surface for cooperating with the tapered arbor portion, a keyway formed in said tapered arbor portion and aligned slots in the honing member and in the guide member adjacent the abutting ends thereof, a key member positioned to cooperate with said aligned slots and with said keyway to prevent relative rotational movement between the honing member, the guide member and the arbor, and an adjustment member having a first portion threadedly engageable with said arbor and a second portion engageable with said guide member, adjustment of said adjustment member adjusting the axial portion of said honing member on said tapered second arbor portion.

Driving gear of grinding stones for drive plate of honing tool

Abstract: PURPOSE:To provide the driving gear of the grinding stone for the drive plate of honing tool, in which a pressure cylinder for feeding for dividing of the honing tool is actually interposed between the honing tool and the eccentric drive plate actuated to traverse the said honing tool.

Piston ring honing

Abstract: A piston ring honing machine and method are disclosed wherein a stack of piston rings are face finished simultaneously by compressing the rings radially inwardly and into a generally circular configuration and retaining the outside diameter of that circular configuration by confining the compressed rings within a plurality of cylindrical drive rollers disposed about the rings A honing tool is placed against the ring faces and the rings driven to rotate about the circle center by rotation of one or more of the cylindrical rollers The stack of rings therefore moves relative to the honing tool to finish the ring face The tool may be reciprocated in the direction of the cylindrical roller axes to more uniformly finish the ring faces

Outside surface honing head for long material

Abstract: PURPOSE:To grind the outside surface of a small-diameter-pipe to be worked uniformly by pushing out a fin, whose extreme point is attached to a grind stone, directly by back pressure generated by pressure fluid, and expanding the grind stone in the radius direction.

Honing machine with adjustable honing tool - has control mechanism operated by probe which measures parallel and conical parts to be honed

Abstract: Workpieces (11) move step by step through the honing machine. The bores (13) of the workpieces are finished by a honing tool (14). The honing stones (16) on the tool can be spread by a mechanism which is drive by an electric motor or electro-hydraulically. The spreading mechanism can vary the dia. of the honing tool by initial fast continuous adjustment followed by slow step by step adjustment. A measuring unit (19) mounted on the honing meachine measures the bores in the workpieces before these come under the honing tool. The unit incorporates a spindle (20) which can be fed into the bore in the workpiece. The spindle measures the bore in the workpiece either by peeumatic, electronic or mechanical means. If the bore is conical it will measure the smallest dia. The measuring unit feeds the measured values to the control arrangement which adjusts the dia. of the honing tool for each workpiece.

Method of preventing stress corrosion cracking

Abstract: PURPOSE: To prevent stress corrosion cracking by converting the residual stress to a compressive stress with application of a surface working by a glass beads honing on the surface of a formed stainless steel material CONSTITUTION: One honing nozzle 6 face the inner surface of a stainless steel pipe 9 having welded zone 9a where a residual tensile stress is caused by welding while the other honing nozzle does the outer surface 9c thereof The honing nozzles are separated about 5 to 15mm from each other and inject glass beads of about 70 to 1,000 with a pressure of about 4 to 5kg/cm 2 so that the pipe is turned on the shaft 10 In this manner, a hardened layer of a satin pattern is formed on the outer and inner surfaces of the pipe 9 It converts residual tensile stress to a compressive stress thereby yielding a favorable effect on the prevention of stress corrosion cracking COPYRIGHT: (C)1980,JPO&Japio

Honing stone attachment for dental handpiece

Abstract: A honing stone attachment for a low-speed dental handpiece is described. The lock rod for the handpiece, which is used to close and open the chuck for receiving burs, is provided at its rear with a honing stone. Operation of the handpiece causes the honing stone to rotate, which makes readily available for the dentist a sharpening instrument for his tools.

Reaction honing tool for honing a flat surface

Abstract: Apparatus and method for honing internal surfaces of a workpiece wherein at least one of the surfaces to be honed is a flat or non-circular aperture. Movable honing stones are mounted in a holding tool such that they can move back and forth transversely of the honing tool as the honing tool is moved longitudinally of the surface to be honed. A first series of honing stones is mounted in a series of parallel slots formed in the honing tool at an angle such that when the tool moves in a first longitudinal direction the honing stones will move to one side of the tool due to reaction forces and due to the angle at which the mounting slots are formed in the tool. A second series of honing stones is mounted in a second plurality of parallel slots formed in the tool such that they move transversely in a direction opposite to the first plurality of stones when the tool is moved in a first longitudinal direction. The result is that the first and second plurality of stones alternately move back and forth transversely with respect to the tool as the direction of travel of the tool changes resulting in a very precise and effective honing operation as well as providing that the tools are self-cleaning. In a preferable arrangement the first and second plurality of stones are mounted in slots which are at an angle of 45° with the longitudinal axis of the tool.

Honing method using roddlike grindstone

Abstract: PURPOSE:To oscillate a rode-like honing grindstone in a small magnitude by oscillating means while feeding the grindstone in its axial direction thereby to effect a highspeed honing finish.

Long material inside surface honing head

Abstract: PURPOSE:To hone an inside surface of a long, small-diameter-pipe highly accurately by fixing a honing head provided connecting screws at both ends, and reciprocating a pipe to be worked while rotating it.

Marking method on cathode ray tube

Abstract: PURPOSE:To provide a semipermanent, durable, clearly visible and hygienically operable method of marking, by carving the mark on a surface of glass by honing.

Honing device and method of use

Abstract: A device, for honing the axially-facing cutting edges of a rotary shaver cutter, has two parts which are rotatable one with respect to the other Within one part there is disposed a frictional element abutted by the cutter so as to prevent relative rotation between the cutter and that part The other part carries an abrasive abutted by the cutting edges of the cutter At one end, the device has a first recess, on one part, which receives a finger or thumb tip, or an end of a holder, and is smooth for easy relative rotation At the opposite axial end, the device has a second recess, on the other part, which receives a thumb or finger tip, or another end of the holder, and is formed to prevent relative rotation The outer part has a circumferential surface adapted for frictional engagement with a running surface such as a table top With the device held between finger and thumb, or between the ends of the holder held in the hand, running it backwards and forwards in contact with the running surface causes the cutter edges to be honed

Method and device for honing outside surface of long material

Abstract: PURPOSE:To grind/work the outer circumference of a small-diameter-pipe to be worked uniformly by performing expansion of a grind stone by liquid pressure under the condition that an outside surface honing head is fixed.

Instrument and tool honing mechanism

Abstract: An instrument and tool honing mechanism in which a gear rack is mounted on and movable with a reciprocable bar, and a spindle having a pinion thereon is supported by a fixture in a transverse relationship to said bar with the pinion in engagement with the gear rack. A honing element is mounted on the spindle, and when the bar reciprocates, the rack creates a reciprocating movement in the spindle, and hence rotates the honing element on the spindle. The mechanism is preferably constructed as an attachment for a honing machine, and is capable of being readily mounted on and removed from the machine. The fixture preferably is pivoted to the rear of the reciprocable bar for angular movement from a position substantially horizontal to an elevated position where the pinion is disengaged from the gear rack. The honing element may be spherical or cylindrical shaped, and is normally mounted on a forwardly projecting end of the spindle where it can easily be used to recondition instruments and tools of the type normally used by dentists and doctors.

Honing machine for trochoidal surface of work

Abstract: PURPOSE:To efficiently hone a work in high accuracy by eccentrically displacing a honing stone shaft and work rotating table shaft in predetermined distance and rotating them at predetermined rotating ratio.

Method of and for honing long pipe

Abstract: PURPOSE:To extrude a fin from a honing head, using a pressure liquid as back pressure, press a grinding stone on the fin against the inner surface of a long tube having a small inner diameter to be machined, and forcedly eject a machining liquid against the grinding stone thereby to uniformly finish the inner surface of the tube.

Insert for honing tool

Abstract: An improved insert is disclosed for use with a honing tool for retaining an abrasive element while mechanically isolating the abrasive element from the remainder of the honing tool. The improved slot liner is in the form of a bushing having four interconnected wall sections extending generally parallel to one another and including an arrangement for holding the bushing fixedly within the body of the honing tool. A slot at one end and a flexible curved spring member at the other end of the insert provide for improved, spring-loaded gripping characteristics of the insert. The abrasive element is additionally supported and retained due to frictional forces on the other bushing surfaces.

Adjustable honing or lapping tool built from segments - in which segment ends are supported to prevent segments tipping

Abstract: The lapping tool consists of a main body on which segment shaped carriers (2, 3) are mounted. Strips of grinding material (41) are mounted on the carriers. The positions of the carriers can be adjusted radially against spring pressure. The axial position of the carriers is fixed. The radial position of the carriers is adjusted by means of a wedge piece (1) against which the inside faces of the carriers lie. The wedge piece is moved axially to adjust the carriers. The ends of the carriers fit over the main body of the lapping tool.