深孔啄钻加工效率研究  

Studies on the Efficiency of Deep Hole Peck Drilling

作　　者：唐煊 刘鸣 陈云鹏 刘军[1] TANG Xuan;LIU Ming;CHEN Yunpeng;LIU Jun(College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]哈尔滨工程大学机电工程学院,哈尔滨150001

出　　处：《机械工程师》2018年第12期47-50,共4页Mechanical Engineer

基　　金：海洋工程重点实验宝(上海交通大学)开放课题项目(1703)

摘　　要：通过啄钻方式可以实现利用普通麻花钻进行深孔加工,但由于增加了反复进退刀和冷却时间,导致加工时间变长,生产效率较低,因此研究如何提高啄钻加工效率对大批量生产具有重要意义。文中根据深孔啄钻的基本原理,以传热学基本理论为基础,研究啄钻效率与单次冷却时间的关系,推导出计算公式。通过数值分析,发现随着单次冷却时间的延长,啄钻效率先升高后降低,存在一最佳效率;随着孔深和孔径的增加,啄钻效率降低;啄钻过程中,钻头冷却的温度降幅并非越大越好,可以通过控制单次冷却时间来合理控制温度降幅,并由此确定最佳钻削次数。研究成果为啄钻加工技术能更合理运用于实际生产中提供理论依据。Through the way of pecking drills deep hole drilling can be realized by using ordinary twist drill.However,due to the increase of repeated feeding,retreating and cooling time,processing time is longer and the production efficiency is lower.Based on the fundamental principle of deep hole pecking drilling and the basic heat transfer theory,this paper studies the relationship between pecking efficiency and single cooling time,and derives the calculation formula.Through numerical analysis,it is found that with the increase of single cooling time,the pecking efficiency first increases,then decreases,and there is an optimum efficiency.With the increase of hole depth and hole diameter,the efficiency of pecking drilling decreases.In the process of pecking drilling,the temperature drop of drill bit is not as large as possible.The temperature drop can be reasonably controlled by controlling the cooling time of single drillings and the optimum drilling times can be determined accordingly.The research results provide a theoretical basis for the application of pecking drilling in the actual production.

关 键 词：深孔加工 啄钻 加工效率 

分 类 号：TG52[金属学及工艺—金属切削加工及机床]