微小型钟表机构公差设计中的有限元分析与研究  

Study of Tolerance Designing of the Precise Microminiature Mechanism

作　　者：张国智[1] 张之敬[1] 金鑫[1] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081

出　　处：《机械设计与研究》2007年第5期70-73,共4页Machine Design And Research

基　　金：国家部委基金资助项目(20050329014)

摘　　要：针对微小型无返回力矩钟表机构,考虑微小型零件的加工工艺及该机构的高承载、高转速的恶劣工作工况,以有限元法与赫兹理论相结合,建立了包含制造误差的有限元力学模型,以Pro/E和ANSYS为工具,得出了主要影响机构运行可靠性的齿轮的齿向误差、位置误差极限,从而确定了微小型齿轮的合理公差,进而保证了该机构的运行的可靠性,并且在一定程度上降低了对加工工艺的要求,从而降低了加工成本,为微小型零件的公差制定提供了一定借鉴。Considering processing technic of the part and the work condition of the mechanism that is high overload and rotational speed, the paper establishes the finite element model of the microminiature clock mechanism with unturned escapement including manufacturing error with FEM and Hertz theory. With Pro/E and ANSYS, find the extremum of the main errors （ site error and longitudinal form error of the gear） that influence the reliability of the whole mechanism and define reasonable tolerance so as to not only decrease the manufacturing cost in a way but also ensure the reliability of the mechanism. Moreover, supply reference basis for tolerance designing of the microminiature part.

关 键 词：微小型 有限元 赫兹理论 齿向误差 位置误差 公差 

分 类 号：TH12[机械工程—机械设计及理论]