论文部分内容阅读
自定心中心架用于细长轴类零件,尤其是丝杠、螺杆、曲轴等的机械加工,自定心中心架夹持工件的定心精度直接影响零件的加工精度。以机构学和理论力学为基础设计了一种自定心中心架参数化模型。以轴类零件的外圆磨削为例对中心架的受力情况进行分析计算,以参数化设计和虚拟样机技术相结合的手段对中心架机构进行了仿真分析。仿真结果与理论计算值的一致性好,这为磨床自定心中心架的结构设计和拓扑优化提供了一种新方法。
Centering frame for self-centering slender shaft parts, especially the screw, screw, crankshaft and other machining, self-centering center frame clamping workpiece centering accuracy directly affects the accuracy of parts processing. Based on the mechanics and theoretical mechanics, a parametric model of self-centering frame was designed. Taking the cylindrical grinding of shaft parts as an example, the stress of the center frame is analyzed and calculated. The center frame mechanism is simulated and analyzed by the combination of parametric design and virtual prototype technology. The simulation results are in good agreement with the theoretical ones, which provides a new method for the structural design and topology optimization of self-centering grinder.