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US 2015/0020966 A1Published application
Apparatus and method for forming lubricant recess having minute configuration in curved inner surface
AssigneeHwabaek Engineering Co., LTD.
InventorsKang Lee, Young Hwan Uhm, Jung Min Han
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Abstract
Disclosed is an apparatus and method for forming lubricant recesses having minute configurations by applying a photolithograph method in a curved inner surface, such as a cylinder bore surface of a cylinder block, the inside of a cylinder liner, the inside of a compressor cylinder, a big end of a connecting rod, a big end bearing, a shaft insertion hole of a rocker arm, or the like in an internal combustion engine.
Claims16
An apparatus for forming lubricant recesses having minute configurations on a curved inner surface, the apparatus comprising:
- a cleaning unit for cleaning the curved inner surface;
- a photoresist layer formation unit for applying a photosensitive material on the cleaned curved inner surface to form a photoresist layer;
- a photomask placing unit for disposing a photomask having a configuration which conforms with the configuration of lubricant recesses proximate to the photoresist layer;
- an exposure unit for exposing the photoresist layer through the photomask;
- a developing unit for developing the exposed photoresist layer;
- an etching unit for selectively etching the curved inner surface exposed by the developing unit to form a lubricant recess pattern onto the curved inner surface;
- and
- a delaminating unit for separating or removing the photoresist layer remained on the curved inner surface.
5 more elements
Dependencies are inferred from the claim text.