CYLINDER BLOCK AND MACHINING METHOD THEREOF

WIPO Patent Application WO/2013/080590

A1

Provided are a cylinder block and a machining method thereof, wherein low friction can be achieved, existing facilities can of course be used to easily obtain the machined shape of a bore, and it is possible to form a large tapered shape and to effectively suppress seizing. A machined shape of a bore (111) can be formed by honing including a first step and a second step. In the first step, the cross section of the bore is given a substantially circular shape by varying the rotating speed of a head (302) or the surface pressure from a grind stone (303), and the inner surface of the bore is machined so that the diameter of the substantially circular shape varies along the center axis. In the second step, the rotating speed of the head (302) and the surface pressure from the grind stone (303) are kept constant, whereby the hatch shape of at least part (e.g. all) of the inner surface of the bore (111) is corrected to a predetermined shape.

JPH10193077	CORE FOR CASTING
JP2019526737	Segmented thermal barriers of internal combustion engines and their manufacturing methods
JP2016089275	SURFACE ACTIVATION THROUGH PLASMA SPRAY FOR THERMAL SPRAY COATING OF CYLINDER BORE

MURAOKA KOTARO (JP)
KODAMA KAZUYA (JP)
SUZUKI MIYUJI (JP)

PCT/JP2012/065140

June 06, 2013

June 13, 2012

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HONDA MOTOR CO LTD (JP)
MURAOKA KOTARO (JP)
KODAMA KAZUYA (JP)
SUZUKI MIYUJI (JP)

F02F1/00; B24B33/02

JP2009078320A	2009-04-16
JP4193086B2	2008-12-10
JPS6216736U	1987-01-31
JPH01167021A	1989-06-30
JP2002221077A	2002-08-09
JP2006194095A	2006-07-27

SUENARI, Mikio (JP)
End 成 Mikio (JP)

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