表面硬度间接获取齿轮材料屈服强度方法研究  

Study on the surface-hardness based yield strength of gear material

作　　者：贾永军[1] 刘金娃[1] 薛河[2] Jia Yongjun;Liu Jinwa;Xue He(School of Electromechanical and Information Engineering, Shaanxi Energy Institute, Shaanxi Xianyang, 712000, China;School of Mechanical Engineering,Xi'an University of Science and Technology,Shaanxi Xi'an,710054,China)

机构地区：[1]陕西能源职业技术学院机电与信息工程学院,陕西咸阳712000 [2]西安科技大学机械工程学院,陕西西安710054

出　　处：《机械设计与制造工程》2019年第8期95-98,共4页Machine Design and Manufacturing Engineering

摘　　要：采煤机滚筒太阳轮热处理后其表面硬度具有不均匀的特性,用拉伸试验很难准确获取其屈服强度值。依据同一材料在额定载荷作用下硬度值不变的原则,首先通过维氏硬度实验测出齿面内部的硬度值,然后建立维氏硬度实验的有限元模型,最后采用维氏硬度实验与有限元数值模拟计算相结合的方法,间接求解得到齿面内部各点的屈服强度。研究结果表明:由材料的硬度值间接求解屈服强度的方法是可行的,进一步分析得出齿面内部硬度与屈服强度呈线性连续变化关系。As an important transmission part, gear's performance is directly related to its manufacturing process and mechanical properties. A main mechanical property index of material, yield strength is an important parameter in gear manufacturing. accurate acquisition of the parameter provides important technical support for improving the design and manufacturing quality of gear in shearer cutting part reducer. In view of the uneven surface hardness of shearer drum gears after hot-processing, it is difficult to obtain its yield strength accurately by tensile test. According to the principle that the hardness value of the same material remains unchanged under rated load, it combines Vickers hardness experiment with finite element numerical simulation calculation, proposes the method of indirectly calculating the yield strength of the material through its hardness value, obtains the continuous linear relationship between hardness and yield strength.

关 键 词：采煤机 齿轮 硬度 力学性能 屈服强度 

分 类 号：TD421[矿业工程—矿山机电]