高畅,刘发美,金俊松,等.带环形凸台薄盘形件旋压成形规律研究[J].精密成形工程,2024,16(3):145-151.
GAO Chang,LIU Famei,JIN Junsong,et al.Spinning Forming Process for Thin Disc Parts with Annular Boss[J].Journal of Netshape Forming Engineering,2024,16(3):145-151. |
| 带环形凸台薄盘形件旋压成形规律研究 |
| Spinning Forming Process for Thin Disc Parts with Annular Boss |
| 投稿时间：2024-01-09 |
| DOI：10.3969/j.issn.1674-6457.2024.03.015 |
| 中文关键词: 薄盘形件 环形凸台 旋压 缺陷 工艺参数 成形极限 |
| 英文关键词: thin disk part annular boss spinning defect process parameter forming limit |
| 基金项目:国家自然科学基金(52175319) |
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| 中文摘要: |
| 目的 探明带环形凸台薄盘形件旋压成形工艺的可行性，揭示成形过程的特点、成形缺陷的类型和产生机制，以及工艺参数对成形极限的影响规律。方法 基于ABAQUS\Explicit有限元模型，分析成形过程中的材料流动、应力分布、缺陷的产生机制和工艺参数对成形极限的影响规律。结果 旋压成形过程分为内槽填充、轴向隆起和径向扩展3个阶段，应力场沿径向和周向呈梯度分布，坯料在径向扩展阶段由于受压失稳产生了凸台凹坑缺陷。成形极限随凸台增厚比、盘缘宽厚比和型槽倾角的增大而增大，随旋轮进给比f的增大，成形极限先增大后减小。结论 总结了增厚旋压工艺的成形特征、缺陷演化机制以及工艺参数对成形极限的影响规律，为带环形凸台薄盘形件旋压成形工艺的设计和优化提供指导。 |
| 英文摘要: |
| The work aims to investigate the feasibility of the spinning forming process for thin disc parts with annular boss and reveal the characteristics of the forming process, the various types of forming defects and their respective generation mechanisms, and the impact of process parameters on the forming limit. Based on the ABAQUS/Explicit finite element model, the material flow, stress distribution, defect generation mechanism, and impact of process parameters on the forming limit were analyzed. The spinning forming process was divided into three stages:inner groove filling, axial uplift, and radial expansion. The stress field exhibited a gradient distribution along radial and circumferential directions. During the radial expansion stage, the pressure instability caused the formation of pit defects in the billet. The forming limit incrementally rose with the growth of the boss thickening ratio, flange width-thickness ratio, and groove inclination angle. Moreover, an increase in the roller feed ratio f initially led to an increase in the forming limit, followed by a decrease. The forming characteristics, defect evolution mechanism and the impact of process parameters on the forming limit are summarized, which provides guidance for the design and optimization of the spinning forming process of thin disc parts with annular boss. |
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