数控车床中高级技能训练是职业学校机械专业的必修课程,也是核心课程。但该课程危险系数大,操作要点繁杂,学生的实践生产经验几乎为零,稍有不慎就会发生碰撞事故,撞坏刀具和加工零件,甚至发生人身事故。笔者结合教学实践,对学生在数车实训过程中发生的撞刀现象进行原因分析和总结,提出切实可行的预防措施和教学方法,以减少碰撞事故,提高实训教学质量。 CNC lathe advanced skills training vocational school mechanical compulsory courses, but also the core curriculum. However, the course has a high risk coefficient, complicated operation points, almost zero practical experience in production, accidental collision, crashes of knives and parts, and even personal injuries. Based on the teaching practice, the author analyzes and summarizes the causes of the knife striking which occur during the training of several cars and puts forward practical preventive measures and teaching methods to reduce the collision accident and improve the teaching quality of practical training.