厚空心六角不锈钢管滚切力理论建模与验证

doi:10.3901/JME.2022.01.277

摘要/Abstract

摘要： 针对厚空心六角不锈钢管滚压剪切，提出摆动式滚压剪切方法，建立求解管材滚压剪切过程中的重要参数滚切力的理论模型。分析该方法加工厚空心六角不锈钢管的过程，根据塑性力学知识建立摆动式滚压剪切机构的几何模型和力学模型，引入重要参数滚切力并建立其理论模型，并将该理论模型运用在具体实例上。提出面积修正系数与准静态修正系数对理论模型进行修正，并通过有限元方法进行修正系数的求解。通过试验对修正后的理论模型进行验证，检验修正后的理论模型的实用性，并对进给量的选择与修正系数的选择关系进行分析，为以后的试验提供参考。相较于以往的研究，基于修正系数提出的理论模型的精度更高，能更好地总结滚切力建模误差来源，可以推广应用到其他类型管材。

关键词: 厚空心六角钢管, 摆动式滚压剪切, 滚切力计算, 仿真, 试验

Abstract: The swing type roll-shearing method is proposed and a theoretical model for solving the roll-shearing force, the important parameter of the tube roll-shearing process, is established for thick hollow hexagonal stainless steel tubes. The process of processing thick hollow hexagonal stainless steel tubes by this mechanism is analyzed; according to the knowledge of plasticity, the geometric model and mechanical model of the swing roll-shearing mechanism are established, then the essential parameter roll-shearing force is introduced and the theoretical model of it is established, and the theoretical model is applied to a specific example. The area correction coefficient and quasi-static correction coefficient are proposed to modify the theoretical model and solved by the finite element method. The revised theoretical model is verified through experiments, the practicability is tested, and the relationship between the selection of feed and correction coefficients is analyzed, which provided a reference for future experiments. Compared with previous studies, the theoretical model based on correction coefficients has higher accuracy, can better summarize the sources of error of the model of roll-shearing force, and can be applied to other types of tubes.

Key words: thick hollow hexagonal steel tube, swing type roll-shearing, roll-shearing force calculation, simulation, experiment

中图分类号:

TG372

蒋君侠, 陶邦明, 廖海鹏, 掌新辕, 董群. 厚空心六角不锈钢管滚切力理论建模与验证[J]. 机械工程学报, 2022, 58(1): 277-288.

JIANG Junxia, TAO Bangming, LIAO Haipeng, ZHANG Xinyuan, DONG Qun. Theoretical modeling and Verification of Roll-shearing Force of Thick Hollow Hexagonal Stainless Steel Tube[J]. Journal of Mechanical Engineering, 2022, 58(1): 277-288.

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