大直径气动潜孔锤钻头球齿与本体的过盈量分析  

Interference Analysis of Drill and Body for Large Diameter Pneumatic DTH Hammer

作　　者：訚耀保[1] 张昌钧[1] 岑斌[1] 郭传新[2] 

机构地区：[1]同济大学机械与能源工程学院,上海200092 [2]北京建筑机械化研究院,北京100007

出　　处：《液压气动与密封》2013年第12期17-20,共4页Hydraulics Pneumatics & Seals

基　　金：国家科技支撑计划资助项目(2011BAJ02B06);国家自然科学基金资助项目(51175378;51275356);航空科学基金资助项目(20120738001;20128038003)

摘　　要：大直径气动潜孔锤钻头一般采用冷压工艺进行钻齿与本体装配,即固齿。固齿过盈量的大小直接决定钻头制造工艺过程及其服役性能。采用弹性力学的方法初步计算过盈量,用有限元数值解法模拟冷压固齿过程,获取过盈量与齿孔、柱齿应力间的关系,得到较精确的过盈值用于指导冷压固齿装配过程。The cold-press holding technology is used in the large diameter pneumatic down-the-hole hammer.The clearance of drill and body influences the manufacturing process and service behavior.The theory of elasticity is used to make a rough calculation,and finite-element analysis is adopted to simulate the process of cold-press holding so as to get the relationship between the clearance and tooth-hole or drill.At last the precise clearance is obtained to guide the assembly process of cold-press holding process.

关 键 词：气动技术 潜孔锤钻头 冷压固齿 过盈量 

分 类 号：TH138[机械工程—机械制造及自动化]