基于多工位成形机床的缩口成形零件的模具设计
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摘要
以一种铝合金材料的直管单端缩口型零件为对象,设计并制造了能够满足连续生产并适应多工位机床特点的模具。通过分析该零件的成形特点和机床运动特性,模具采用主体盘式结构。成形模具通过机床凸轮动作实现卷圆功能,顶出装置实现圆管直角转向,主体盘以导向圆盘为转动中心做回转运动,带动整形刀具和缩口成形模进行直管的整形和单端缩口,出口端设置红外检测装置,异常情况自动停机保护。经过调试,模具工作情况正常,制件尺寸符合图纸要求,工作速度达到预期目的,首批连续生产后全部达到要求。
A die was designed for a direct tube single-ended shrinkage mouth part composed by aluminum alloy materials,which could meet continuous-time production and adapt to the characteristics of multi-position lathe.The die with subject disc structure was designed by analyzing forming feature of the considered parts and movement characteristics of multi-position lathes.Forming die finished rolling circularities by moving cams of the multi-position lathes.The right angle steering of circle tubes was realized by the ejection mechanism of the designed die.The subject disc turned around the oriented disc to make the shaping tool and shrinkage mouth forming die complete the direct tube truing and single-ended necking.In addition,some infrared detection equipment were installed in the outlet end of the die such that the die could realize automatic shutdown protection under unusual conditions.The turning results show that the operations of the designed die are normal,and the size of workpiece can meet the requirements of the drawings,as well as the working speed has reached intended purposes.All parts in the first continuous-time production can meet requirements of users.
A die was designed for a direct tube single-ended shrinkage mouth part composed by aluminum alloy materials,which could meet continuous-time production and adapt to the characteristics of multi-position lathe.The die with subject disc structure was designed by analyzing forming feature of the considered parts and movement characteristics of multi-position lathes.Forming die finished rolling circularities by moving cams of the multi-position lathes.The right angle steering of circle tubes was realized by the ejection mechanism of the designed die.The subject disc turned around the oriented disc to make the shaping tool and shrinkage mouth forming die complete the direct tube truing and single-ended necking.In addition,some infrared detection equipment were installed in the outlet end of the die such that the die could realize automatic shutdown protection under unusual conditions.The turning results show that the operations of the designed die are normal,and the size of workpiece can meet the requirements of the drawings,as well as the working speed has reached intended purposes.All parts in the first continuous-time production can meet requirements of users.
引文
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[2]武兵书.中国模具工业的发展及现状[J].航空制造技术,2010,(7):76-77.Wu B S.Current situation and development of China mould&die industry[J].Aeronautical Manufacturing Technology,2010,(7):76-77.
[3]李志刚,曹延安.亚洲模具工业与技术的发展状况[J].模具工业,2007,33(6):1-4.Li Z G,Cao Y A.Situation of die&mold industry and technology in Asia[J].Die&Mould Industry,2007,33(6):1-4.
[4]董湘怀,黄树槐,李志刚,等.塑性加工技术的发展趋势[J].中国机械工程,2000,11(9):1074-1077.Dong X H,Huang S H,Li Z G,et al.Developments and trends of plastic forming technology[J].China Mechanical Engineering,2000,11(9):1074-1077.
[5]郭永强,徐春国,任广升,等.挤压缩口工艺中缺陷的研究[J].锻压技术,2011,36(2):144-147.Guo Y Q,Xu C G,Ren G S,et al.Study on defect in extrusion necking[J].Forging&Stamping Technology,2011,36(2):144-147.
[6]王芳,崔财威,方敏,等.7A04合金筒件缩口成形工艺研究[J].热加工工艺,2011,40(11):97-100.Wang F,Cui C W,Fang M,et al.Study on necking process for7A04 alloy can[J].Hot Working Technology,2011,40(11):97-100.
[7]王孝培.冲压设计资料[M].北京:机械工业出版社,1983.Wang X P.Stamping Design Material[M].Beijing:China Machine Press,1983.
[8]李硕本.冲压工艺学[M].北京:机械工业出版社,1984.LI S B.Stamping Technology[M].Beijing:China Machine Press,1984.
[9]梁炳文.板金冲压工艺手册[M].北京:国防工业出版社,1989.Liang B W.Sheet Metal Stamping Process Handbook[M].Beijing:National Defense Industry Press,1989.
[10]许恒建,柳玉起,金伟,等.基于中间构形的级进模条料分步展开算法研究[J].锻压技术,2012,37(2):42-46.Xu H J,Liu Y Q,Jin W,et al.Research on multi-step unfolding algorithm of progressive die strip based on intermediate shapes[J].Forging&Stamping Technology,2012,37(2):42-46.
[11]邹国庆.德国GRM-80万能弯曲机[J].内燃机配件,1994,(3):22-23.Zou G Q.German GRM-80 universal bending machine[J].Internal Combustion Engine Parts,1994,(3):22-23.