高速线材夹送辊主轴刚性振动模型.pdfVIP

高速线材夹送辊主轴刚性振动模型 姚双吉 （北京京诚瑞信长材工程技术有限公司，北京 100176 ） 摘 要 高速线材吐丝机前夹送辊是高速线材生产线上的核心设备之一，其最关键的技术指标为轧制线速度。目前 国产夹送辊的轧制速度线已经能够满足90m/s 轧制速度要求，但与进口夹送辊设计速度 130～140m/s，保证工作速 度 120m/s 的性能指标仍有较大差距。瑞信长材工程技术有限公司为萍乡钢铁公司老高线改造项目开发的夹送辊能 够长期稳定地工作在 105m/s 的速度，该机型为目前国产夹送辊系列中的最高速度。如此高的工作速度对设备主轴 及传动系统的加工、装配精度是一个巨大的考验。制造和装配精度不够会引起设备运转时各个方向的振动增大并导 致设备损坏，是限制夹送辊速度提升的主要原因。本文建立了夹送辊主轴刚性振动模型，针对夹送辊主轴在加工和 装配过程中的精度问题，分析了制造、装配误差与设备振动之间的关系，研究结果具有一定的实践指导意义。 关键词 高速线材 夹送辊 振动 主轴精度 Rigid Modeling for Pinch Roll Main Shaft in High Speed Wire Rod Yao Shuangji (CERI Long Product Co., Ltd., Beijing, 100176) Abstract Pinch roll before laying head is core equipment in high speed wire rod line. The highest rolling velocity has been defined as the most important qualification of pinch roll. The highest velocity of China made pinch roll can matched 90 m/s rolling speed. However, it is lower quality by comparing with the highest working velocity in the world. Some of the pinch rolls can reach the design capability as 130-140 m/s and the guarantee capability as 120 m/s. CERI LONG PRODUCT CO., LTD. has supply a new type of pinch roll for Pingxiang Steel, which can be working as 105 m/s for long term and stable. It has been seem as the highest capability pinch roll made in China. It is recognized that the higher velocity mains higher precision and low error in manufacture and assemble. Regardless precision will lead to vibration and limitation for speed up. In this paper, a rigid modeling for pinch roll main shaft is proposed. The relationship is considered and established between in manufacture or assemble precision and vibration for pinch roll. The results of the research can be