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应用超高速钢滚刀实体滚切经调质处理后的中硬齿面齿轮,以取代齿面高频淬火和磨齿工艺,不仅在技术上是可行的,而且还能降低加工费用。目前,这项新工艺已在石油部江汉油田钻采机修厂正式投产使用。滚切石油机械用减速器中的传动齿轮,其法面模数m_n=7,螺旋角β=22°30′且分为左、右旋向,齿数z=117。材料采用合金钢42CrMo或35CrMo制成,调质处理后硬度达HB320～390。齿轮精度为JB179 8-7-7D_b,齿面光洁度为▽ 5。根据加工要求,齿坯应先按上述硬度热处理,再滚齿。
It is not only technically feasible but also to reduce the processing cost by using the ultra-high speed steel hob to roll and cut the medium hardened gear after the quenching and tempering treatment to replace the high-frequency quenching and grinding process of the tooth surface. At present, the new technology has been officially put into operation at the Jianghan Oilfield Drilling and Production Plant of the Ministry of Petroleum. Rolling cut gear for gearboxes in petroleum machinery has a normal face modulus of m_n = 7 and a helix angle of β = 22 ° 30 ’. It is divided into right and left handed and the number of teeth is z = 117. Materials made of alloy steel 42CrMo or 35CrMo, quenched and tempered after the hardness of HB320 ~ 390. Gear accuracy JB179 8-7-7D_b, tooth surface finish ▽ 5. According to the processing requirements, tooth blanks should be heat treated according to the above hardness, then hobbing.