厚板矫直机弯辊装置的设计与优化

Design and optimization of roll bending device in heavy plate straightening machine

针对目前厚板矫直机常用弯辊装置中存在的不足,基于七辊厚板矫直机设计出斜楔式弯辊装置,为减小斜楔整体纵向尺寸,将上、下斜楔均设计成为三段式,并通过有限元分析软件Abaqus对弯辊装置进行了强度校核,还对斜楔的纵向尺寸进行了优化,降低了机架的高度,减轻了整机质量,提高了矫直机的刚度。另外,通过分析模拟结果发现,当上斜楔的推进量在36 mm左右时,斜楔机构的整体应力值较小且较均匀,因此实际矫直生产过程中应尽量使斜楔机构处于中间位置。

Aiming at the current problem of roll bending device that usually used in heavy plate straightening machine, the wedge roll bending device was designed based on the seven-roller heavy plate straightening machine. In order to reduce the overall longitudinal size of the wedge, the upper and under wedge were designed into three segments. The finite element analysis software Abaqus was used to perform intensity check on the roll bending device. The longitudinal size of the wedges was optimized. The height and weight of the main frame was further reduced. The stiffness of the straightening machine was improved. In addition, it was shown that when the upper wedge impelling amount was about 36mm, the stress value of overall wedge mechanism was smaller and more uniform through the analysis of simulation results. Therefore, in the process of the actual straightening production, the wedge mechanism should be in the middle position as far as possible.