滚切剪剪切机构研究及力学分析
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摘要
滚切式剪切机(简称滚切剪)是钢铁企业宽厚板生产线上的重要设备,主要用于对轧制后的钢板进行定尺和取样。目前我国宽厚板生产线上的滚切剪多数为引进国外产品,部分为引进国外技术生产的产品。尽管国内已有少数企业自主研发了宽厚板滚切剪,但对滚切剪的剪切理论、剪切力特征和机架的应力及变形规律缺乏系统研究。本文以3800mm滚切式定尺剪为研究对象,在综合分析滚切剪工作原理的基础上,探讨了其剪切机构的设计理论,研究了滚切剪设备的力学特征,为滚切剪设备的改造及国产化提供了设计依据。
论文主要完成了以下工作:
1)在对滚切剪工作特点及剪切原理深入分析的基础上,研究了满足纯滚动剪切要求的上剪刃运动轨迹,建立了整个剪切阶段的剪切力数学模型,找到了剪切过程中剪切力的变化规律。并根据某企业3800mm滚切式定尺剪的主要技术参数,对剪切力进行了校核计算。
2)综合应用三维建模平台UG和动力学分析软件RecurDyn,建立了滚切剪的运动学模型并进行了仿真,分析了滚切剪关键位置的运动轨迹、速度、加速度等运动学特性。
3)基于动力学分析软件RecurDyn,对滚切剪进行了动力学分析,找到了关键构件的约束反力和驱动力矩的变化规律,得到了剪切机构工作过程中的动力学特性。
4)应用有限元仿真软件NX Nastran,分析了支撑机架在受力最不均匀时刻的应力变形特征,对机架进行了强度和刚度校核,找出了机架的薄弱环节,对机架优化设计以及辅助设备布置具有指导意义。
Rolling shear is mainly used for specified length and sampling steel plate after rolling as an important equipment on plate production line for iron and steel plant. Presently, most of the rolling shear that on domestic plate production line are foreign products, few of them made by ourself but introduction of foreign technology. Although there are few enterprise study on it independently now, the rolling motion theory, characteristics of shear force, stress and deformation of housing aren’t researched by the numbers.In order to guide the equipment’s alteration and localization, in this paper, the design theory of shear mechanism and the mechanical properties of the equipment is studied based on the comprehensive analysis of working principle of a an 3800 rolling shear.
The follow work has done in this paper:
1) Based on the comprehensive analysis of working principle and rolling motion theory, the blade’s trajectory that satisfy the pure rolling motion theory is derived, and the shear force model is established in this paper. Finally, a shear force is computed by using the technical parameters of a 3800 rolling shear to find out its variation in cutting process.
2) The application of UG and RecurDyn is implemented to establish the kinematic model of the cutting shear mechanism and then analyze its kinematic characteristics, include the trajectory, velocity, acceleration and other kinematic features of shear mechanism.
3) By using RecurDyn, the dynamic characteristics of the shearing mechanism is analysed to obtain some key component’s constraint reaction and driving torque so as to find out the dynamics feature of shear mechanism.
4) Finite element analysis software NX Nastran is used to analyse the stress and deformation characteristics of the supporting housing when shear force is mostly uneven, checked out its strength and rigidity, and found out some weak link on the housing, all of which are important factor to optimize the housing structure and layout of auxiliary equipment.
论文主要完成了以下工作:
1)在对滚切剪工作特点及剪切原理深入分析的基础上,研究了满足纯滚动剪切要求的上剪刃运动轨迹,建立了整个剪切阶段的剪切力数学模型,找到了剪切过程中剪切力的变化规律。并根据某企业3800mm滚切式定尺剪的主要技术参数,对剪切力进行了校核计算。
2)综合应用三维建模平台UG和动力学分析软件RecurDyn,建立了滚切剪的运动学模型并进行了仿真,分析了滚切剪关键位置的运动轨迹、速度、加速度等运动学特性。
3)基于动力学分析软件RecurDyn,对滚切剪进行了动力学分析,找到了关键构件的约束反力和驱动力矩的变化规律,得到了剪切机构工作过程中的动力学特性。
4)应用有限元仿真软件NX Nastran,分析了支撑机架在受力最不均匀时刻的应力变形特征,对机架进行了强度和刚度校核,找出了机架的薄弱环节,对机架优化设计以及辅助设备布置具有指导意义。
Rolling shear is mainly used for specified length and sampling steel plate after rolling as an important equipment on plate production line for iron and steel plant. Presently, most of the rolling shear that on domestic plate production line are foreign products, few of them made by ourself but introduction of foreign technology. Although there are few enterprise study on it independently now, the rolling motion theory, characteristics of shear force, stress and deformation of housing aren’t researched by the numbers.In order to guide the equipment’s alteration and localization, in this paper, the design theory of shear mechanism and the mechanical properties of the equipment is studied based on the comprehensive analysis of working principle of a an 3800 rolling shear.
The follow work has done in this paper:
1) Based on the comprehensive analysis of working principle and rolling motion theory, the blade’s trajectory that satisfy the pure rolling motion theory is derived, and the shear force model is established in this paper. Finally, a shear force is computed by using the technical parameters of a 3800 rolling shear to find out its variation in cutting process.
2) The application of UG and RecurDyn is implemented to establish the kinematic model of the cutting shear mechanism and then analyze its kinematic characteristics, include the trajectory, velocity, acceleration and other kinematic features of shear mechanism.
3) By using RecurDyn, the dynamic characteristics of the shearing mechanism is analysed to obtain some key component’s constraint reaction and driving torque so as to find out the dynamics feature of shear mechanism.
4) Finite element analysis software NX Nastran is used to analyse the stress and deformation characteristics of the supporting housing when shear force is mostly uneven, checked out its strength and rigidity, and found out some weak link on the housing, all of which are important factor to optimize the housing structure and layout of auxiliary equipment.
引文
[1]马立峰,黄庆学,李颖,王建梅.新型滚切剪空间剪切机构优化数学模型的建立及应用[J].四川大学学报,2008,40(2):170-170.
[2]徐善敏.宝钢5m宽厚板轧机剪切线设备与剪切质量的相关因素[J].宝钢技术,2005,(2):34-37.
[3]黎康康.基于纯滚运动的滚切剪机构设计方法研究[D].大连:大连理工大学,2009.
[4]冀俊杰,马立峰,黄学庆.国内外中厚钢板滚切剪装备技术现状[J].重型机械,2009,(2):4-8.
[5]钱振伦.我国宽厚板生产技术和装备的发展及评述[J].冶金管理,2008,(3):57-60.
[6]孙决定.中厚板生产技术的进步与不足[J].冶金管理,2006,(10):32-35.
[7]李瑛.浅析滚切剪在中厚板厂的应用[J].冶金标准化与质量,2007,45(5):53-55.
[8]邹瑞.中厚板滚切式双边剪国产化研制[J].江苏冶金,2004,32(6):33-35.
[9]张永生,钟剑鹏,刘建彬.滚切式定尺剪剪切质量的分析[J].南方金属,2001,(119):12-145.
[10]王银霞.滚切式剪切机简介[J].中国科技信息,2006,(1):125-126.
[11]张磊,刘静波.宽厚板热处理线滚切式定尺剪[J].一重技术,2008,(2):14-16.
[12]刘义,宋协春,王东.滚切式双边剪的设计与结构分析[J].中国重型装备,2008,(2):4-14.
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[14]王凤辉,李龙海等.平行刃剪切机剪切过程的有限元模拟仿真[J].塑性过程学报,2003,10(2):18-21.
[15]徐会彩,李金山.斜刃剪板机剪切力的研究[J].锻压装备与制造技术,2009,(4):29-31.
[16]杨秀梅.变宽度圆盘剪切机虚拟样机研究[D].北京:北方工业大学,2008. [ 17] BONDAR Y G,BELOBROV Y N,KALASHNIKOV A A.Modern cutting line in a plate-finishing section[J] .Metallurfist,2005,49(11-12):456-458.
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[23]杨固川.双轴传动滚切式定尺剪[J]冶金设备,1998,4(4):35-36.
[24]Masao Murakawa, Yan Lu.Precision cutting of sheets by means ofa new shear based on rolling motion[J]. Journal of Materials Processing Technology,1997,66:232-239.
[25]N Champion. SIEMENS VAI Plate-Mill Capabilities and Technologies[J]. Iron andSteel,2006,41(4):88-90.
[26]S Sasikiran, P Vinod Kumar. Dynamic analysis of a guillotine shearing machine[J]. Journal of Materials Processing Technology,1997,71:202-214.
[27]V Ramamurti, S Gowri. Design considerations of over-crank and under-crank guillotine shears[J]. Journal of Materials Processing Technology,1996,57:225-232.
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[30]徐广红.用再生运动链法设计六连杆剪切机构[J].江西冶金,2002,22(1):35-37.
[31]张坤,杨刚俊等.降低和消除滚切剪剪切力峰值的研究[J].中国重型装备,2008, (2):25-30.
[32]杨刚俊,余隋怀,张恒昌.滚切剪剪切机构优化设计系统的构建[J].机械设计,2008,(2):25-30.
[33]黄庆学,马立峰,李进宝.新型滚切剪非对称曲柄机构原理[J].机械工程学报,2008,44(5):119-123.
[34]蔡红波,黄学庆,梁爱生.单轴双偏心定尺滚切剪力学分析应用[J].机械工程与自动化,2004,(3):7-9.
[35]于维民,张磊.滚切式定尺剪机架有限元分析[J].一重技术,2008,(2):27-28.
[36]孔复森,杨惠新,杨得印.滚切式定尺剪结构参数优化研究[J].冶金设备,2009,26(3):63-65.
[37]杨固川.中厚板生产设备概述[J].轧钢,2004,21(1):38-41.
[38]江浩等.国产3000中厚板轧机概述及技术展望[J].冶金设备,2006,(4):45-50.
[39]卢建霞.平行刃剪切机剪切过程的仿真模拟及机架的有限元分析[D].鞍山:鞍山钢铁学院,2002.
[40]周涛,黄铁球.基于RecurDyn的多体动力学仿真[J]CAD/CAM与制造业信息化,2004,(8):44-45.
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[42]梁爱生,赵春江.单轴双偏心定尺滚切剪运动轨迹求解及运动仿真[J].重型机械,2004,(1):41-19.
[43]雷闻宇,王正燧,陈健.滚切式剪切机滚切原理分析及剪切机构最优化设计[J].重型机械,1987,(6):7-14.
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[45]张玉华,柴晓燕.滚切剪剪切力的计算[J].天津理工学院学报,1998,14(3):25-27.
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[2]徐善敏.宝钢5m宽厚板轧机剪切线设备与剪切质量的相关因素[J].宝钢技术,2005,(2):34-37.
[3]黎康康.基于纯滚运动的滚切剪机构设计方法研究[D].大连:大连理工大学,2009.
[4]冀俊杰,马立峰,黄学庆.国内外中厚钢板滚切剪装备技术现状[J].重型机械,2009,(2):4-8.
[5]钱振伦.我国宽厚板生产技术和装备的发展及评述[J].冶金管理,2008,(3):57-60.
[6]孙决定.中厚板生产技术的进步与不足[J].冶金管理,2006,(10):32-35.
[7]李瑛.浅析滚切剪在中厚板厂的应用[J].冶金标准化与质量,2007,45(5):53-55.
[8]邹瑞.中厚板滚切式双边剪国产化研制[J].江苏冶金,2004,32(6):33-35.
[9]张永生,钟剑鹏,刘建彬.滚切式定尺剪剪切质量的分析[J].南方金属,2001,(119):12-145.
[10]王银霞.滚切式剪切机简介[J].中国科技信息,2006,(1):125-126.
[11]张磊,刘静波.宽厚板热处理线滚切式定尺剪[J].一重技术,2008,(2):14-16.
[12]刘义,宋协春,王东.滚切式双边剪的设计与结构分析[J].中国重型装备,2008,(2):4-14.
[13]文庆明.轧钢机械[M].北京:化学工业出版社,2004.
[14]王凤辉,李龙海等.平行刃剪切机剪切过程的有限元模拟仿真[J].塑性过程学报,2003,10(2):18-21.
[15]徐会彩,李金山.斜刃剪板机剪切力的研究[J].锻压装备与制造技术,2009,(4):29-31.
[16]杨秀梅.变宽度圆盘剪切机虚拟样机研究[D].北京:北方工业大学,2008. [ 17] BONDAR Y G,BELOBROV Y N,KALASHNIKOV A A.Modern cutting line in a plate-finishing section[J] .Metallurfist,2005,49(11-12):456-458.
[18]张贵庭,王正燧.滚切式钢板剪切机力能参数研究[J].重型机械,1993, (5):41-46.
[19]杨固川.滚切剪在中厚板中的应用[J].轧钢,1995,(3):35-37.
[20]Petry C C.Shears for Cut-to-length[J].MetalCenter News,2000,40(1): 52-56.
[21]Bruno J J.Press-shears for Cutting and/or Baling Scrap Meta [J]. Metallurgist, 2003, 47(11) :473-476. [ 22 ] Zyryanov V V, Ivanov A M, Gaitanov I Yu. Use of Shears with a "Rolling Cut"[J].Metallurgist, 2004,48(3):126-128.
[23]杨固川.双轴传动滚切式定尺剪[J]冶金设备,1998,4(4):35-36.
[24]Masao Murakawa, Yan Lu.Precision cutting of sheets by means ofa new shear based on rolling motion[J]. Journal of Materials Processing Technology,1997,66:232-239.
[25]N Champion. SIEMENS VAI Plate-Mill Capabilities and Technologies[J]. Iron andSteel,2006,41(4):88-90.
[26]S Sasikiran, P Vinod Kumar. Dynamic analysis of a guillotine shearing machine[J]. Journal of Materials Processing Technology,1997,71:202-214.
[27]V Ramamurti, S Gowri. Design considerations of over-crank and under-crank guillotine shears[J]. Journal of Materials Processing Technology,1996,57:225-232.
[28]Harish Rajaram, Mahadevan Balasubramaniam. Dynamic analysis of two types of over-crank guillotine shears—a comparative study[J]. Journal of Materials Processing Technology,1998,83 (3):54-61.
[29]杨固川.滚切式定尺剪机组[P].中国专利:02203540.0,2003-01-22.
[30]徐广红.用再生运动链法设计六连杆剪切机构[J].江西冶金,2002,22(1):35-37.
[31]张坤,杨刚俊等.降低和消除滚切剪剪切力峰值的研究[J].中国重型装备,2008, (2):25-30.
[32]杨刚俊,余隋怀,张恒昌.滚切剪剪切机构优化设计系统的构建[J].机械设计,2008,(2):25-30.
[33]黄庆学,马立峰,李进宝.新型滚切剪非对称曲柄机构原理[J].机械工程学报,2008,44(5):119-123.
[34]蔡红波,黄学庆,梁爱生.单轴双偏心定尺滚切剪力学分析应用[J].机械工程与自动化,2004,(3):7-9.
[35]于维民,张磊.滚切式定尺剪机架有限元分析[J].一重技术,2008,(2):27-28.
[36]孔复森,杨惠新,杨得印.滚切式定尺剪结构参数优化研究[J].冶金设备,2009,26(3):63-65.
[37]杨固川.中厚板生产设备概述[J].轧钢,2004,21(1):38-41.
[38]江浩等.国产3000中厚板轧机概述及技术展望[J].冶金设备,2006,(4):45-50.
[39]卢建霞.平行刃剪切机剪切过程的仿真模拟及机架的有限元分析[D].鞍山:鞍山钢铁学院,2002.
[40]周涛,黄铁球.基于RecurDyn的多体动力学仿真[J]CAD/CAM与制造业信息化,2004,(8):44-45.
[41]姜长平.滚动剪切力实验研究[D].沈阳:东北大学,1996.
[42]梁爱生,赵春江.单轴双偏心定尺滚切剪运动轨迹求解及运动仿真[J].重型机械,2004,(1):41-19.
[43]雷闻宇,王正燧,陈健.滚切式剪切机滚切原理分析及剪切机构最优化设计[J].重型机械,1987,(6):7-14.
[44]王丹.滚切式定尺剪机构设计及运动动力学研究[D].沈阳:沈阳航空工业学院,2009.
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