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1985年,我所研制的盲孔、阶梯孔机用通孔金刚石铰刀通过部级技术鉴定。这是我国“六五”规划期间的38项重点课题的内容之一——阀孔精密加工工艺研究。这个课题的研究成功,使我国铸铁阀孔的精密加工工艺技术有了较大的提高。经过技术测定:机用通孔金刚石铰刀加工粗糙度最低可达R_a为0.14μm,圆度最高达0.4μm(当时鉴
In 1985, I developed a blind hole, step hole machine with a through hole diamond reamer through the ministerial-level technical appraisal. This is one of the 38 key topics during the “Sixth Five-Year Plan” in our country - the research on valve hole precision machining technology. The successful research of this subject has greatly improved the precision machining technology of cast iron valve hole in our country. After the technical determination: machine through-hole diamond reamer roughness of the lowest R_a of 0.14μm, roundness up to 0.4μm (when Kam