Method of machining bore surface of cylinder block and apparatus

Details Method of machining bore surface of cylinder block and apparatus Method of machining bore surface of cylinder block and apparatus

1997-12-29

1999-08-03

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With cutting of work or product

7237001, 2989813, 1231932, B21D 5384

Patent

active

059310383

ABSTRACT:
In a method of machining a surface of a bore of an aluminum cylinder block for internal combustion engines, the bore surface is machined to be formed with a number of recesses which are to be formed into oil reservoirs. The bore surface is then pressed uniformly to be plastically deformed so that each recess is narrow at its opening and broad in its inner part. The machining for formation of the recesses and the working for plastic deformation for narrowing the opening are combined together so that the bore surface is machined to have oil reservoir recesses each of which is narrow at its opening and broad at its inner part.

REFERENCES:
patent: 1422655 (1922-07-01), Brehmer
patent: 2645954 (1953-07-01), Pfingston
patent: 4004441 (1977-01-01), Leszak
patent: 4539832 (1985-09-01), Koller
patent: 5339523 (1994-08-01), Hasegawa

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