Method and apparatus for patterning of bore surfaces
First Claim
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1. An apparatus for patterning a bore surface, the apparatus comprising:
- a rotating member having a diameter and one or more rotatable elements secured thereto, at least one of said one or more rotatable elements having a plurality of protuberances;
wherein said rotating member is operable to expand the diameter and thereby advance the one or more rotatable elements from a first position toward the bore surface, wherein the protuberances are configured to form a plurality of indentations in the bore surface upon engagement of the protuberances with the bore surface.
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Abstract
An apparatus comprises a rotating member having one or more rollers. The one or more rollers have a plurality of protuberances. The rollers may be advanced toward a surface during rotation of the rotating member, such as toward a bore surface. The protuberances are configured to make a pattern of discrete indentations in the surface upon engagement of the protuberances with the surface. The apparatus is particularly suited for creating oil-retention pockets in the surface of an engine cylinder and other uses. The apparatus may be used to create a pattern of oil-retention pockets or other pockets in a cylinder with varying pocket density in a single pass.
55 Citations
20 Claims
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1. An apparatus for patterning a bore surface, the apparatus comprising:
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a rotating member having a diameter and one or more rotatable elements secured thereto, at least one of said one or more rotatable elements having a plurality of protuberances; wherein said rotating member is operable to expand the diameter and thereby advance the one or more rotatable elements from a first position toward the bore surface, wherein the protuberances are configured to form a plurality of indentations in the bore surface upon engagement of the protuberances with the bore surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for patterning a surface of a bore, the method comprising:
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(a) rotating a tool, wherein the tool comprises a member having one or more rollers, wherein at least one of the one or more rollers has a plurality of protuberances; (b) advancing at least a portion of the tool along the bore at a feed rate; (c) urging the one or more rollers toward the bore surface; (d) engaging the one or more rollers with the bore surface, wherein the protuberances are configured to form a pattern of indentations in the bore surface upon engagement of the protuberances with the bore surface, wherein the pattern comprises a plurality of discrete indentations; and (e) varying the feed rate of the tool while the one or more rollers are engaged with the bore surface to create a varied density of discrete indentations. - View Dependent Claims (17, 18, 19)
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20. An apparatus for patterning a bore surface, the apparatus comprising:
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a rotating member having a diameter and one or more rollers secured thereto, at least one of said one or more rollers having a plurality of protuberances, wherein the protuberances comprise grit; wherein said rotating member is operable to hydraulically expand the diameter and thereby advance the one or more rollers toward the bore surface, wherein said protuberances are configured to compressively form a plurality of indentations in the bore surface upon engagement of the protuberances with the bore surface.
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Specification