枪钻在深孔加工中的应用

摘要

根据对枪钻磨损要因图的分析,介绍了在发动机缸盖主油道孔加工过程中影响枪钻寿命的主要工艺因素,枪钻在深孔钻削时最主要的问题是断屑和排屑.针对这些问题,对切削刃几何形状、几何参数和钻削参数进行了分析和改进.应用结果表明:改进后断屑效果较好,切屑能够顺利排出,刀具寿命和切削效率大大增加.%Based on the fish-bone diagram analysis for gun drill wearing,the major technological factors influencing gun drill serve life in the machining process of the main oil gallery hole of a engine cylinder head were introduced.The serious problems in gun drill deep hole drilling were chip breaking and chip removal.In view of the existing problems,the shape and geometric parameters of the cutting edge and cutting parameters were analyzed and improved.The application results show that the chip can be break well and discharged,also the gun drill life and the production efficiency can be increased greatly.