一组椭圆形截面吊臂折弯间隙、步进及折弯刀数计算公式
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摘要
目的研究椭圆形截面吊臂折弯时折弯间隙和折弯步进的关系。方法构建了一组吊臂折弯间隙、步进及折弯刀数的计算公式。结果结果表明,通过该公式所得折弯工艺参数与实践较吻合,同时,折弯效率也可以得到极大提高,以180 t产品为例,增大折弯步进后,折弯效率提高了20.3%~56.4%。结论建立了折弯间隙、折弯步进及折弯刀数的数学模型,可以据此得出所需的最优工艺参数,该模型对实际生产具有很好的工艺指导和支撑作用,可极大提高生产效率。
To study the relationship between bending gaps and steppers in elliptical cross-section crane boom bending,a set of calculation formulas of bending gaps, steppers and bending numbers were established. The results showed that: the bending process parameters calculated by these formulas were relatively consistent with actual conditions. At the same time, bending efficiency could be greatly improved. For example, for a 180 t product, its bending efficiency could be increased by 20.3%~56.4% after increasing the bending step. Mathematic models of bending gaps, steppers and bending numbers can obtain the optimized process parameters, thus they provide guidance and support for the actual production of the part and will supply a huge boost in productivity.
To study the relationship between bending gaps and steppers in elliptical cross-section crane boom bending,a set of calculation formulas of bending gaps, steppers and bending numbers were established. The results showed that: the bending process parameters calculated by these formulas were relatively consistent with actual conditions. At the same time, bending efficiency could be greatly improved. For example, for a 180 t product, its bending efficiency could be increased by 20.3%~56.4% after increasing the bending step. Mathematic models of bending gaps, steppers and bending numbers can obtain the optimized process parameters, thus they provide guidance and support for the actual production of the part and will supply a huge boost in productivity.
引文
[1]黄琳.起重机伸缩臂结构优化研究[D].大连:大连理工大学,2007.HUANG Lin.Optimization Research of Structure for Crane Telescopic Boom[M].Dalian:Dalian University of Technology,2007.
[2]崔晓辉.起重机半圆形吊臂成形工艺研究及计算机仿真[D].武汉:华中科技大学,2009.CUI Xiao-hui.Research on the Process of Semi-circular Shape Crane Boom and Computer Simulation[D].Wuhan:Huazhong University of Science&Technology,2009.
[3]郭庆义.汽车起重机臂架结构研究[D].大连:大连理工大学,2007:4—7.GUO Qing-yi.Study of Mobile Cranes’Boom[D].Dalian:Dalian University of Technology,2007:4—7.
[4]刘海波,周文.伸缩式吊臂的截面设计[J].机械管理开发,2011(6):96.LIU Hai-bo,ZHOU Wen.Section Designing of the Telescopic Boom[J].Mechanical Management and Development,2011(6):96.
[5]汤茂旭,刘木南.轮式起重机起重臂的发展历程[J].建筑机械化,2007(2):30—31.TANG Mao-xu,LIU Mu-nan.Development Course of Hoist Boom of Wheel Crane[J].Construction Mechanization,2007(2):30—31.
[6]卢毅非.全地面起重机关键技术探析[J].工程机械与维修,2004(10):69—71.LU Yi-fei.Analysis of the Key Technology for All-terrain Crane[J].Construction Machinery&Maintenance,2004(10):69—71.
[7]唐传良,赵小刚,赵海军.U形截面吊臂制造工艺分析与研究[J].装备制造技术,2012(10):77—78.TANG Chuan-liang,ZHAO Xiao-gang,ZHAO Hai-jun.U Shaped Cross Section Boom Manufacturing Technology Analysis and Research[J].Equipment Manufacturing Technology,2012(10):77—78.
[8]蔡宇子.现代伸缩臂截面及尺寸优化研究[D].大连:大连理工大学,2012:1—8.CAI Yu-zi.Research on Cross-sections and Size Optimization of Modern Telescopic Boom[M].Dalian:Dalian University of Technology,2012:1—8.
[9]蔡福海,高顺德,王欣.全地面起重机发展现状及其关键技术探讨[J].工程机械与维修,2006(9):67.CAI Fu-hai,GAO Shun-de,WANG Xin.The Status and the Key Technique of All Terrain Cranes[J].Construction Machinery&Maintenance,2006(9):67.
[10]周陆军,郭亚军,李雷阵,等.高强钢伸臂盖板弯曲成形及回弹控制研究[J].工程机械与维修,2015(S1):102—106.ZHOU Lu-jun,GUO Ya-jun,LI Lei-zhen,KONG Xiangmin.Research on Bending Forming and Springback Control of High Strength Steel Cantilever Plate[J].Construction Machinery&Maintenance,2015(S1):102—106.
[11]曾芳英,张成.超高强钢U形截面起重臂成形工艺研究[J].金属加工(热加工),2014(5):75—76.ZENG Fang-ying,ZHANG Cheng.Research on the Forming Process of Ultra High Strength Steel for U Shaped Cross Section Boom[J].Metal Forming(Hot),2014(5):75—76.
[12]余松敏.板料折弯机折制大圆弧时折弯角度和挡料位置计算[J].锻压技术,1996(2):19—21.YU Song-min.Bending Angle and Back-gauge Position Calculation for Large Circular Arc Bending Using Sheet Metal Bending Machine[J].Forging Technology,1996(2):19—21.
[13]陈积翠,毛军明,肖家扬.数控折弯成形工艺在机车制造中的应用[J].电力机车与城轨车辆,2006,29(4):45.CHEN Ji-cui,MAO Jun-ming,XIAO Jia-yang.NC Bending Technique Application in Locomotive Manufacturing[J].Electric Locomotives&Mass Transit Vehicles,2006,29(4):45.
[14]胡爱萍,王平,李德遵.影响弯曲件回弹的因素及控制方法[J].航天制造技术,2007(2):57.HU Ai-ping,WANG Ping,Li De-zun.Affecting Factors of Spring-Back in Bending and Control Methods[J].Aerospace Manufacturing Technology,2007(2):57.
[15]钟毓斌.冲压工艺及模具设计[M].北京:机械工业出版社,2000.ZHONG Yu-bin.Stamping Process and Die Design[M].Beijing:Machinery Industry Press,2000.
[2]崔晓辉.起重机半圆形吊臂成形工艺研究及计算机仿真[D].武汉:华中科技大学,2009.CUI Xiao-hui.Research on the Process of Semi-circular Shape Crane Boom and Computer Simulation[D].Wuhan:Huazhong University of Science&Technology,2009.
[3]郭庆义.汽车起重机臂架结构研究[D].大连:大连理工大学,2007:4—7.GUO Qing-yi.Study of Mobile Cranes’Boom[D].Dalian:Dalian University of Technology,2007:4—7.
[4]刘海波,周文.伸缩式吊臂的截面设计[J].机械管理开发,2011(6):96.LIU Hai-bo,ZHOU Wen.Section Designing of the Telescopic Boom[J].Mechanical Management and Development,2011(6):96.
[5]汤茂旭,刘木南.轮式起重机起重臂的发展历程[J].建筑机械化,2007(2):30—31.TANG Mao-xu,LIU Mu-nan.Development Course of Hoist Boom of Wheel Crane[J].Construction Mechanization,2007(2):30—31.
[6]卢毅非.全地面起重机关键技术探析[J].工程机械与维修,2004(10):69—71.LU Yi-fei.Analysis of the Key Technology for All-terrain Crane[J].Construction Machinery&Maintenance,2004(10):69—71.
[7]唐传良,赵小刚,赵海军.U形截面吊臂制造工艺分析与研究[J].装备制造技术,2012(10):77—78.TANG Chuan-liang,ZHAO Xiao-gang,ZHAO Hai-jun.U Shaped Cross Section Boom Manufacturing Technology Analysis and Research[J].Equipment Manufacturing Technology,2012(10):77—78.
[8]蔡宇子.现代伸缩臂截面及尺寸优化研究[D].大连:大连理工大学,2012:1—8.CAI Yu-zi.Research on Cross-sections and Size Optimization of Modern Telescopic Boom[M].Dalian:Dalian University of Technology,2012:1—8.
[9]蔡福海,高顺德,王欣.全地面起重机发展现状及其关键技术探讨[J].工程机械与维修,2006(9):67.CAI Fu-hai,GAO Shun-de,WANG Xin.The Status and the Key Technique of All Terrain Cranes[J].Construction Machinery&Maintenance,2006(9):67.
[10]周陆军,郭亚军,李雷阵,等.高强钢伸臂盖板弯曲成形及回弹控制研究[J].工程机械与维修,2015(S1):102—106.ZHOU Lu-jun,GUO Ya-jun,LI Lei-zhen,KONG Xiangmin.Research on Bending Forming and Springback Control of High Strength Steel Cantilever Plate[J].Construction Machinery&Maintenance,2015(S1):102—106.
[11]曾芳英,张成.超高强钢U形截面起重臂成形工艺研究[J].金属加工(热加工),2014(5):75—76.ZENG Fang-ying,ZHANG Cheng.Research on the Forming Process of Ultra High Strength Steel for U Shaped Cross Section Boom[J].Metal Forming(Hot),2014(5):75—76.
[12]余松敏.板料折弯机折制大圆弧时折弯角度和挡料位置计算[J].锻压技术,1996(2):19—21.YU Song-min.Bending Angle and Back-gauge Position Calculation for Large Circular Arc Bending Using Sheet Metal Bending Machine[J].Forging Technology,1996(2):19—21.
[13]陈积翠,毛军明,肖家扬.数控折弯成形工艺在机车制造中的应用[J].电力机车与城轨车辆,2006,29(4):45.CHEN Ji-cui,MAO Jun-ming,XIAO Jia-yang.NC Bending Technique Application in Locomotive Manufacturing[J].Electric Locomotives&Mass Transit Vehicles,2006,29(4):45.
[14]胡爱萍,王平,李德遵.影响弯曲件回弹的因素及控制方法[J].航天制造技术,2007(2):57.HU Ai-ping,WANG Ping,Li De-zun.Affecting Factors of Spring-Back in Bending and Control Methods[J].Aerospace Manufacturing Technology,2007(2):57.
[15]钟毓斌.冲压工艺及模具设计[M].北京:机械工业出版社,2000.ZHONG Yu-bin.Stamping Process and Die Design[M].Beijing:Machinery Industry Press,2000.