BJC-II型特殊螺纹接头加工工艺优化

Optimization of Processing for BJC-II Special Threaded Joint

为了解决特殊螺纹加工过程中螺纹梳刀磨损过快、加工效率低及毛刺去除不彻底的问题,以P110钢级Φ139.7 mm×9.17 mm规格BJC-II管端特殊螺纹加工为例,提出优化螺纹加工及切削方案,并通过开发新型螺纹刀具、设计模块化刀座等方法提高加工效率。结果表明,通过对比优化前后试验数据及效果,新设计的三齿梳刀配合上下两把梳刀错位1.5倍螺距进行双通道加工的工艺,更有利于螺纹的加工,也可有效地避免螺纹梳刀打刀,提升产品合格率;去除毛刺刀座模块化应用,可有效减少不必要的走刀及刀塔旋转时间,有效去除毛刺。该加工工艺优化方法及应用,能够为特殊螺纹加工及实际生产提供一定参考。

In order to solve the problems of excessive wear of the thread chaser,low processing efficiency and incomplete burr removal in the process of special thread machining,taking the special thread machining of P110 steel gradeΦ139.7 mm×9.17 mm BJC-II pipe end as an example,the optimized thread machining and cutting scheme was proposed.The problem of machining efficiency was solved by developing new thread tool and designing modular tool holder and the processing efficiency of the special thread has been improved.The results show that by comparing the experimental data and effect,the new technology of double⁃channel machining with the newly designed three⁃tooth chaser with the upper and lower two chaser cutters dislocating 1.5 times pitch is more conducive to thread processing,and can also effectively avoid the influence caused by the thread chaser cutting and improve the product pass rate.The modular application of burr removal tool holder can effectively reduce unnecessary tool walking and turret rotation time,and effectively remove burrs.The optimization method and application of the machining technology provide some reference for special thread machining and actual production.