长轴类锻件新型柔性切边校正系统
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摘要
长轴类锻件在锻造切边过程中会产生直线度变形,采用切边校正复合工艺可在切边的同时实现校正,目前的复合工艺是通过施加背压的方法达到切边和校正同时进行的目的。针对现有施加背压方法的缺陷,设计了一种新型柔性切边校正系统,该系统通过配置垫板中柱塞缸的数量和分布,并将柱塞缸和蓄能器组成液压回路,通过调节蓄能器的油压控制柱塞缸的推力,进而调整切边时的背压,从而有效地针对不同产品施加背压。利用在线油温监测和闭环计算自动更换油液,保证油液温度。该柔性切边校正系统与现有的方法相比,可实现柔性背压,适合不同锻造产品的切边需求,提高了生产效率和产品精度,减少了设备和模具的经济投入。
Straightness deformation occurs during the trimming process of long axle forgings,and the compound technology of trimming and correction can realize trimming and correction at the same time. Current composite processes achieved the simultaneous trimming and correction by applying back pressure,and a new flexible trimming correction system was designed to overcome the shortcomings of the existing back pressure method. Then,the hydraulic circuit with plunger cylinder and accumulator was built by configuring the number and distribution of plunger cylinders in the backing plate,and the thrust of plunger cylinder was controlled by adjusting the hydraulic pressure of accumulator to adjust the back pressure during the trimming process. So the back pressure can be effectively applied to different products. Furthermore,the oil was replaced automatically by on-line oil temperature monitoring and closed-loop calculation,and the oil temperature was ensured. Compared with the existing methods,the flexible trimming correction system can achieve flexible back pressure and meet the trimming requirements of different forging products. Thus,it improves the production efficiency and product precision,and reduces the economic investment of equipment and dies.
Straightness deformation occurs during the trimming process of long axle forgings,and the compound technology of trimming and correction can realize trimming and correction at the same time. Current composite processes achieved the simultaneous trimming and correction by applying back pressure,and a new flexible trimming correction system was designed to overcome the shortcomings of the existing back pressure method. Then,the hydraulic circuit with plunger cylinder and accumulator was built by configuring the number and distribution of plunger cylinders in the backing plate,and the thrust of plunger cylinder was controlled by adjusting the hydraulic pressure of accumulator to adjust the back pressure during the trimming process. So the back pressure can be effectively applied to different products. Furthermore,the oil was replaced automatically by on-line oil temperature monitoring and closed-loop calculation,and the oil temperature was ensured. Compared with the existing methods,the flexible trimming correction system can achieve flexible back pressure and meet the trimming requirements of different forging products. Thus,it improves the production efficiency and product precision,and reduces the economic investment of equipment and dies.
引文
[1]中国锻压协会.锻造模具与润滑[M].北京:国防工业出版社,2009.Confederation of Chinese Metalforming Industry. Forging Die and Lu-brication[M]. Beijing:National Defense Industry Press,2009.
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[5]韦韡,洪涛,蒋鹏,等.铝合金控制臂切边冲孔校正复合模设计[J].模具工业,2013,39(7):13-17.Wei W,Hong T,Jiang P,et al. Compound die of trimming,piercing and sizing for aluminum alloy controlling arm[J]. MouldIndustry,2013,39(7):13-17.
[6]宗爱国.曲轴切边校正复合模设计[J].模具工业,2015,41(9):23-26.Zong A G. Design of trimming and restriking compound die forcrankshaft[J]. Mould Industry,2015,41(9):23-26.
[7]党军.锻造新式碟簧符合冲孔切边模[J].中国机械,2014,(9):91-92.Dang J. New punching and trimming compound die with discsprings[J]. Machine China,2014,(9):91-92.
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[9]张艳春,姬连凯.节距190 mm链轨节切边、冲孔复合模设计[J].模具技术,2012,(2):28-31.Zhang Y C,Ji L K. Design of trimming-punching compound die fortrack link with pitch of 190 mm[J]. Die and Mould Technology,2012,(2):28-31.
[10]金曼曼.连杆切边冲孔校正复合模[J].模具工业,2000,26(3):20-21.Jin M M. Compound die for cutting and punching correction of con-necting rod[J]. Mould Industry,2000,26(3):20-21.
[2]《锻模设计手册》编写组.锻模设计手册[M].北京:机械工业出版社,1991.Writing Group of Forging Die Design Manual. Forging Die DesignManual[M]. Beijing:China Machine Press,1991.
[3]毛厚军.模锻件切边变形问题分析及改进[J].湖北汽车工业学院学报,2004,18(4):38-41.Mao H J. Analysis and improvement of deformation of die forging[J]. Journal of Hubei Automotive Industries Institute,2004,18(4):38-41.
[4]孙文东,站冬飞. 125 MN自动线切边校正复合模工艺研究[J].金属加工:热加工,2017,36(17):12-13.Sun W D,Zhan D F. Research on compound die of trimming cor-rection for 125 MN automatic line[J]. Metal Working,2017,36(17):12-13.
[5]韦韡,洪涛,蒋鹏,等.铝合金控制臂切边冲孔校正复合模设计[J].模具工业,2013,39(7):13-17.Wei W,Hong T,Jiang P,et al. Compound die of trimming,piercing and sizing for aluminum alloy controlling arm[J]. MouldIndustry,2013,39(7):13-17.
[6]宗爱国.曲轴切边校正复合模设计[J].模具工业,2015,41(9):23-26.Zong A G. Design of trimming and restriking compound die forcrankshaft[J]. Mould Industry,2015,41(9):23-26.
[7]党军.锻造新式碟簧符合冲孔切边模[J].中国机械,2014,(9):91-92.Dang J. New punching and trimming compound die with discsprings[J]. Machine China,2014,(9):91-92.
[8]徐自立.顶板锻件的切边、冲孔模优化设计[J].武汉科技学院学报,2004,17(4):38-41.Xu Z L. Optimized design of dies for punching and cutting for top-plate forging[J]. Journal of Wuhan University of Science and En-gineering,2004,17(4):38-41.
[9]张艳春,姬连凯.节距190 mm链轨节切边、冲孔复合模设计[J].模具技术,2012,(2):28-31.Zhang Y C,Ji L K. Design of trimming-punching compound die fortrack link with pitch of 190 mm[J]. Die and Mould Technology,2012,(2):28-31.
[10]金曼曼.连杆切边冲孔校正复合模[J].模具工业,2000,26(3):20-21.Jin M M. Compound die for cutting and punching correction of con-necting rod[J]. Mould Industry,2000,26(3):20-21.