夹具CAD系统中偏心轮夹紧机构的夹紧力计算

夹紧力计算是机床夹具设计的重要组成部分。通过对偏心轮夹紧机构特点的分析,论述了偏心轮夹紧机构计算所需的参数及相应的计算方法,提出了通过VisualC++的ObjectARX编制应用程序AutoCAD的动态连接库来扩展夹具CAD系统功能的方法,使得系统能够自动完成夹紧力各种参数的计算和偏心轮自锁条件的判断。

The calculation of the clamping force is an essential part of the design of the clamping fixture of the machine tool.Based on the analysis of the features of the eccentric gear,the parameters and the algorithms of calculating process are described.It is put forward to use the dynamic link library of the object ARX program AutoCAD through Visual C++to extend the function of CAD system so that the system can automatically perform the parameter calculation of the clamping force and judge the self-locking conditions of the eccentric gear.