燃料噴射バルブのCBNホイール研削加工 : 第2報,油密およびバルブの形状精度と研削加工条件の関係(機械要素,潤滑,工作,生産管理など)

概要

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The present paper describes the influences of the valve roundness and corner dullness to a gasoline leakage, after analyzing them with the shape preciseness of valve-seat system. Moreover, the influences of CBN wheel grinding conditions on the preciseness of valve are discussed. In order to decrease a gasoline leakage from valve-seat clearance, it is necessary to decrease the roundness and corner dullness of valve, as well as the roundness and average clearance of seat. For the small roundness of valve, valve should be fed at the minimum feed rate to CBN wheel under the low eccentricity. The resin-bonded CBN wheel provides the small roundness without sharp scratching under the large wheel speed. The vitrified-bonded CBN wheel with grain size over #800 improves the corner dullness of valve by the sharp edge of wheel formed by the diamond truer of #600 grain size.
一般社団法人日本機械学会の論文
2002-10-25