Please wait a minute...
浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (2): 368-372    DOI: 10.3785/j.issn.1008-973X.2010.02.029
机械工程     
基于弹塑性理论的T型导轨校直模型研究
周磊, 余忠华
(浙江大学 现代制造工程研究所,浙江 杭州 310027)
Model of straightening T-rail based on elastic-plastic theory
ZHOU Lei,YU Zhong-hua
(Institute of Modern Manufacturing Engineering, Zhejiang University, Hangzhou 310027, China)
 全文: PDF  HTML
摘要：

为校正T型导轨的弯曲变形,提出基于弹塑性力学理论的T型导轨反弯校直的数学模型.模型中分析了T型导轨校直过程中的压点与支点的布置、校直弯矩、反弯曲率、校直下压量等关键参数,推导了T型导轨校直过程中反弯曲率与原始曲率间的关系式.为便于T型导轨校直实施,进一步给出了T型导轨校直下压量的计算公式.并以特定尺寸的T型导轨为例进行了分析,给出了反弯曲率与原始曲率间的关系曲线及校直行程与原始变形间的关系曲线,将模型计算结果与有限元结果进行比较,验证了本模型的可行性.
Abstract:

A mathematical model of reverse bending straightening was proposed based on elastic-plastic mechanics in order to straightening T-rail’s bending distortion. The key parameters of straightening T-rail, such as the disposal of press points and support points、straightening moment、reverse bending curvature、down stroke, were analyzed. The formula for computing T-rail’s reverse bending curvature in corresponding to its original deformed curvature was deduced. The expression for accounting the reverse stroke of pressing down was given for operating convenience. The model was used to straightening special T-rail, and the connection curves were presented. The curves reflected the relation between the reverse bending curvature and the original curvature, and the relation between the stroke of pressing down and the original bending. The theoretical results were compared with the finite element method results. Results show that the model is practical.
出版日期: 2010-03-09
:  TH 123  
基金资助:

浙江省科技计划资助项目(2008C21124);国家自然科学基金资助项目(50835008).
通讯作者: 余忠华,男,教授，博导.     E-mail: yuzhh@zju.edu.cn
作者简介: 周磊(1983—),男,湖南永州人,博士生,从事先进制造及质量控制研究.
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

周磊, 余忠华. 基于弹塑性理论的T型导轨校直模型研究[J]. J4, 2010, 44(2): 368-372.

ZHOU Lei, TU Zhong-Hua. Model of straightening T-rail based on elastic-plastic theory. J4, 2010, 44(2): 368-372.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.02.029    或    http://www.zjujournals.com/eng/CN/Y2010/V44/I2/368

［1］ 李醒飞,张晨阳,李力京,等.电梯导轨对轿箱振动的影响［J］.中国机械工程,2005,16(2): 115122.
LI Xing-fei, ZHANG Chen-yang, LI Li-jing,et al. Influences of elevator guide rail on the cabin vibration［J］.China Mechanical Engineering, 2005,16(2): 115122.
［2］ LI Ke-yang, CHEN Chao-kuang, YANG Shyue-cheng. Profile determination of tube-straightening roller by envelope theory［J］. Journal of Materials Processing Technology, 1999, 94(2): 157166.
［3］ 陈慧敏,赖明道.简析圆形断面材料在矫直过程中的弹塑性弯曲变形［J］.焊管,2000,23(3): 810.
CHEN Hui-min, LAI Ming-dao. Elastic-plastic deformation on circular material during straightening process［J］.Welded Pipe and Tube, 2002, 23(3): 810.
［4］ 钦明浩,张向军,蒋守仁,等.轴类零件校直理论分析［J］.合肥工业大学学报:自然科学版,1996,19(4): 2228.
QIN Ming-hao, ZHANG Xiang-jun, JIANG Shou-ren, et al. The analysis of straightening theory of shaftkind’s［J］. Journal of Hefei University of Technology: Natural Science, 1996, 19(4): 2228.
［5］ 徐曼琼,蔺书田,汪北平,等.电梯导轨反弯校直弹塑性变形分析［J］.机械科学与技术,2007,26(8): 10101013.
XU Man-qiong, LIN Shu-tian, WANG Bei-ping, et al. Elastic-plastic deformation analysis of guide rail of elevator in straightening its bends［J］. Mechanical Science and Technology for Aerospace Engineering,2007,26(8)：10101013.
［6］ 翟华.轴类零件校直工艺理论及其数据库研究［D］.合肥：合肥工业大学,1998: 1619.
ZHAI Hua. Research on the shaft straightening technology theory［D］. Hefei: Hefei University of technology, 1998: 1619.
［7］ 崔甫.矫直理论与矫直机械［M］.2版.北京：冶金工业出版社,2007: 1321.
［8］ 任重.ANSYS实用分析教材［M］.北京：北京大学出版社,2003: 4487.
［9］ 钦明浩,柯尊忠,张向军,等.精密矫直机中轴类零件矫直工艺理论研究［J］.机械工程学报,1997,33(2): 4853.
QIN Ming-hao, KE Zun-zhong, ZHANG Xiang-jun, etal.
Study on straightening technical theory of shaftkind in exact straightening press ［J］. Chinese Journal of Mechanical Engineering, 1997, 33(2): 4853.
[1] 艾青林, 祖顺江, 胥芳. 并联机构运动学与奇异性研究进展[J]. J4, 2012, 46(8): 1345-1359.