Honing head construction

A honing device comprising an elongated body portion having an elongated body bore extending therethrough, a pinion gear mounted for rotational movement in the elongated body bore, parallel first and second sets of spaced transverse body bores intersecting the elongated body bore at spaced locations therealong, parallel third and fourth sets of transverse body bores through the body portion intersecting the elongated body bore at locations angularly related to the first and second sets of transverse bores, a pair of honing assemblies each including an elongated member having opposite surfaces, a set of rack gears extending from corresponding ones of the opposite surfaces on each honing assembly for extending into the bores of the respective first and second sets, the rack gears on said respective honing assemblies having gear teeth for cooperatively engaging the pinion gear on opposite sides thereof whereby the honing assemblies move in diametrically opposite directions on the body portion under control of movements of the pinion gear, two circumferentially spaced honing members mounted on the other opposite surface of each elongated member of each honing assembly at positions to engage a work surface at circumferentially spaced locations, the honing members on each honing assembly being located approximately equal distance on opposite sides of the diameter on which the honing assemblies move, a pair of guide assemblies each including an elongated support member having opposite surfaces, a set of rack gears extending from corresponding ones of the opposite surfaces on each guide assembly, the rack gears on one of the guide assemblies extending into the third set of transverse body bores, and the rack gears on the other guide assembly extending into the fourth set of transverse body bores, each of said rack gears on said guide assemblies having teeth for cooperatively engaging the pinion gear on opposite sides thereof whereby the guide assemblies move in diametrically opposite directions on the body portion at locations intermediate circumferentially between the honing assemblies and under control of movements of the pinion gear, each of said guide assemblies having a single work engaging guide member mounted for movement in respective opposite directions under control of rotation of the pinion gear, the rack gears for the respective work engaging guide assemblies and the respective work engaging guide member thereon being located on opposite sides of the diameters a long which the respective guide assemblies move when the pinion gear rotates, the two work engaging honing members on each of the honing assemblies and the work engaging guide member on each of the guide assemblies establishing six circumferentially spaced and simultaneously radially movable work engaging members on the honing device.

A honing mandrel comprising a body portion having a bore extending therethrough, a pinion gear mounted for rotational movement in the bore, four sets of spaced transverse body bores, the bores in each set extending through the body in positions to intersect the bore in which the pinion gear is located at spaced locations therealong, said four sets of transverse bores being arranged in first and second angularly related opposed sets on the body portion, a pair of opposed honing assemblies each including an elongated member having opposite surfaces, a set of rack gears extending from one of the opposite surfaces on each honing assembly at locations for positioning in the respective bore sets of the first opposed sets whereby the honing assemblies are arranged in opposed relation on opposite sides of the body portion, each of said rack gears having rack gear teeth thereon for engaging the pinion gear, at least two circumferentially spaced honing members mounted on the other opposite surfaces of each elongated member to engage a work surface at circumferentially spaced locations thereon, a pair of opposed guide assemblies each including an elongated support member having opposite surfaces, a set of rack gears extending from one of the opposite surfaces of each support member at locations for positioning in the respective bore sets of the second opposed sets whereby the guide assemblies are arranged in opposed relation on opposite sides of the body portion at locations intermediate circumferentially between the honing assemblies, each of said rack gears on the guide assemblies having rack gear teeth thereon engageable with the pinion gear, and a work engaging guide member mounted on the opposite surface of each elongated support member, the work engaging guide members being located on their respective assemblies to move during expansion and contraction of the mandrel closer to a diameter thereof than the honing members on the respective honing assemblies, at least some of the rack gear teeth on the rack gears associated with the honing assemblies being spaced further apart than some of the rack gear teeth on the rack gears associated with the guide assemblies.

A honing device comprising an elongated body portion having an elongated body bore extending therethrough, a pinion gear mounted for rotational movement in the elongated body bore, parallel first and second sets of spaced transverse body bores intersecting the elongated body bore at spaced locations therealong, parallel third and fourth sets of transverse body bores through the body portion intersecting the elongated body bore at locations angularly related to the first and second sets of transverse bores, a pair of honing assemblies each including an elongated member having opposite surfaces, a set of rack gears extending from corresponding ones of the opposite surfaces on each honing assembly for extending into the bores of the respective first and second sets, the rack gears on said respective honing assemblies having gear teeth for cooperatively engaging the pinion gear on opposite sides thereof whereby the honing assemblies move in diametrically opposite directions on the body portion under control of movements of the pinion gear, at least two circumferentially spaced honing members mounted on the other surface of each elongated member of each honing assembly at positions to engage a work surface at circumferentially spaced locations, the honing members on each honing assembly being located approximately equal distance on opposite sides of the diameter on which the honing assemblies move, a pair of guide assemblies each including an elongated support member having opposite surfaces, a set of rack gears extending from one of the opposite surfaces on each guide assembly, the rack gear members on one of the guide assemblies extending into the third set of transverse body bores, and the rack gears on the other guide assembly extending into the fourth set of transverse body bores, each of said rack gears on said guide assemblies having teeth for cooperatively engaging the pinion gear on opposite sides thereof whereby the guide assemblies move in diametrically opposite directions on the body at locations intermediate circumferentially between the honing assemblies, and under control of movements of the pinion gear, each of said guide assemblies having a work engaging guide member mounted for movement in respective opposite directions under control of rotation of the pinion gear, the work engaging guide members on the opposed guide assemblies being mounted for movement in respective opposite directions substantially on a diameter of the body portion, at least some of the rack gear teeth on the rack gears associated with the honing assemblies being spaced further apart than at least some of the rack gear teeth on the rack gears associated with the guide assemblies.

A honing device comprising an elongated body portion having an elongated body bore therethrough, a pinion gear mounted for rotational movement in the elongated body bore, parallel first and second sets of spaced transverse body bores intersecting the elongated body bore at spaced locations therealong, parallel third and fourth sets of transverse body bores through the body portion intersecting the elongated body bore at locations angularly related to the first and second sets of transverse bores, a pair of honing assemblies each including an elongated member having opposite surfaces, a set of rack gears extending from corresponding ones of the opposite surfaces on each honing assembly for extending into the bores of the respective first and second sets, the rack gears on said respective honing assemblies having gear teeth for cooperatively engaging the pinion gear on opposite sides thereof whereby the honing assemblies move in diametrically opposite directions on the body portion under control of movements of the pinion gear, at least two circumferentially spaced honing members mounted on the other opposite surface of each elongated member of each honing assembly at positions to engage a work surface at circumferentially spaced locations, the honing members on each honing assembly being located approximately equal distance on opposite sides of the diameter on which the honing assemblies move, a pair of guide assemblies each including an elongated support member having opposite surfaces, a set of rack gears extending from one of the opposite surfaces on each guide assembly, the rack gear members on one of the guide assemblies extending into the third set of transverse body bores, and the rack gears on the other guide assembly extending into the fourth set of transverse body bores, each of said rack gears on said guide assemblies having teeth for cooperatively engaging the pinion gear on opposite sides thereof whereby the guide assemblies move in diametrically opposite directions on the body portion at locations intermediate circumferentially between the honing assemblies, and under control of movements of the pinion gear, each of said guide assemblies having a work engaging guide member mounted for movement in respective opposite directions under control of rotation of the pinion gear, the work engaging guide members on the opposed guide assemblies being mounted for movement in respective opposite directions substantially on a diameter of the body portion, the rack gear teeth associated with the honing assemblies being modified to increase the rate of radial movement of the honing assemblies relative to the rate of radial movement of the guide assemblies.