镐形截齿硬质合金刀头及焊缝应力分析  

Stress analysis on welded seam and carbide bit of the pick-shaped cutter

作　　者：刘春生[1] 

机构地区：[1]黑龙江科技学院机械工程系,黑龙江哈尔滨150027

出　　处：《辽宁工程技术大学学报（自然科学版）》2004年第1期98-100,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：黑龙江省国际科技合作重点攻关项目(编号WB01104)

摘　　要：从采煤机镐形截齿及其硬质合金刀头的具体结构出发,详细分析了截齿齿身与硬质合金刀头间焊缝应力的两种典型分布形式,给出了应力理论计算表达式及其应力分布的变化规律,并应用有限元分析软件,初步计算了其应力分布情况,其结果基本是吻合的。因此,可通过改变应力模型中的截齿结构参数、安装参数和焊缝结构来评价焊缝应力的变化,为提高截齿工作的可靠性提供了理论方法及途径。According to concrete structure of the sheerer pick—shaped cutter and carbide bit, this paper analyses the two typical scatter forms of welded seam stress in detail. And it provides stress抯 varying law and theory calculation expression of stress. The result of the stress scatter condition are identical with practice by using finite element analyses software .All this provides the theory method and channel to improve cutter抯 working reliability through changing cutter抯 structure parameter and installment parameter and welded seam structure.

关 键 词：采煤机 镐形截齿 硬质合金刀头 焊缝应力 

分 类 号：TG711[金属学及工艺—刀具与模具] TG407