CAJ | 학술논문

为了提高截齿的使用寿命及经济性，借鉴有关经验，在采煤机镐型截齿的基础上提出了一种采用组合形式的新型镐型截齿；通过理论计算初步确定了镐型截齿采用组合式结构时的重要结构参数，加工工艺上拟采用包铸和钎焊相结合的方式进行生产加工；然后在SolidWorks软件中建立三维模型，并应用有限元软件Workbench对改进后的组合式镐型截齿进行不同工况下的静强度分析和疲劳分析。结果表明：新型组合式镐型截齿在不同工况下连接处的应力、应变值较小；组合分段处的疲劳寿命及安全系数较大，疲劳损伤较小，说明在其他部位失效前组合分段处不会发生强度失效，即新型组合式镐型截齿在理论上是可行的。
위료제고절치적사용수명급경제성，차감유관경험，재채매궤호형절치적기출상제출료일충채용조합형식적신형호형절치；통과이론계산초보학정료호형절치채용조합식결구시적중요결구삼수，가공공예상의채용포주화천한상결합적방식진행생산가공；연후재SolidWorks연건중건립삼유모형，병응용유한원연건Workbench대개진후적조합식호형절치진행불동공황하적정강도분석화피로분석。결과표명：신형조합식호형절치재불동공황하련접처적응력、응변치교소；조합분단처적피로수명급안전계수교대，피로손상교소，설명재기타부위실효전조합분단처불회발생강도실효，즉신형조합식호형절치재이론상시가행적。
In order to improve the life and economy of cutters,relevant experience is applied.A new type of the picks-shaped cut-ter which is the kind of combined is designed based on general structure of the pick-shaped cutter.Important structural parameters are used by the theoretical formula of this type of cutter.Processing technology is desided that the combination between pack cast and brazing.Three-dimensional model was created in SolidWorks software.Static strength analysis and fatigue analysis are done under different conditions based on finite element software Workbench.The results show that:the stress and strain value of the connecters in the new cutter is smaller on the different conditions,fatigue life and the safety factor at large segmented cutter,fa-tigue damage is smaller.The failure intensity of the connecters does not occur before the failure intensity of the other parts occurs. That new combined pick-shaped cutter is theoretically feasible.