李玉玺 李 言 崔莅沐 杨明顺 肖继明 崔凤奎

1.西安理工大学机械与精密仪器工程学院，西安，710048 2.河南科技大学机电工程学院，洛阳，471003

丝杠冷滚打成形参数控制研究

李玉玺1李 言1崔莅沐1杨明顺1肖继明1崔凤奎2

1.西安理工大学机械与精密仪器工程学院，西安，710048 2.河南科技大学机电工程学院，洛阳，471003

建立了丝杠冷滚打成形的有限元模型，使用ABAQUS软件模拟其成形过程。首先在仿真结果的基础上，设计正交试验，研究冷滚打过程中工艺参数对滚打深度和隆起高度的影响关系；然后分别建立滚打深度和隆起高度与工艺参数之间的多元回归模型，并进行显著性检验；最后利用自行设计的滚打装置进行丝杠冷滚打试验，验证了模型的有效性。研究结果为通过控制工艺参数形成精确的零部件轮廓提供理论基础，对丝杠冷滚打成形有重要的指导意义。

丝杠；冷滚打；金属流动；正交试验

Abstract: A FEM model of the lead screw cold roll-beating forming processes was built, the ABAQUS software was used to simulate the forming processes. Firstly, based on simulation results, the orthogonal test was designed, influences of processing parameters on forces, beating depths and bulging heights of cold roll-beating processes were studied. Then multivariate regression models of beating depth and bulging height to process parameters were established, and significance tests for regression effects were carried out. Finally, with the self-developed experimental device, lead screw cold roll-beating experiments were carried out to verify the effectiveness of the models, which is of important guiding significances for forming accurate profiles of lead screw by control processing parameters.

Keywords: screw; cold roll-beating; metal flow; orthogonal test

0 引言

随着世界制造业竞争的日益加剧，绿色、节能、精密高效的塑性成形加工技术已成为当今制造业研究和发展的重点领域之一[1-2]。

高速冷滚打成形技术是利用金属固有的塑性，使用特定廓形、高速旋转的滚打轮对毛坯进行逐点断续滚压和击打，使坯料表层金属产生塑性流动，并利用滚打轮与坯料之间的相对运动关系产生累积效应，最终形成预定形状要求的一种无模无约束自由的塑性成形技术。研究表明，高速冷滚打成形方法具有设备吨位小、节能、成形过程柔性好等特点[3-4]。……