摘要
为提升多工位压力机在偏载工况下的成形精度,提出一种基于滑块变形量约束的传动系统抗偏载设计方法。以1600 kN闭式双点压力机为研究对象,建立了三维模型,在不同工位单独工作的条件下,进行受力和有限元分析,量化滑块倾斜与偏载之间的规律。研究发现,偏距Δx=798 mm为强度与运动精度(一级精度ΔH<0.375 mm)的临界点,许用偏载F=825 kN;当Δx<798 mm时,系统受限于连杆强度;当Δx>798 mm时,系统受控于滑块精度。研究揭示了偏距与许用载荷的反向关联性,并确立了12工位极限载荷谱。在极限偏载条件下,滑块Z向变形高度差ΔH为0.0706~0.2442 mm,显著低于偏载许用值0.375 mm,验证一级精度达标。建立了多工位压力机偏载工况下的“偏距-载荷-精度”耦合模型,为高精度冲压装备设计提供了理论支撑。
To improve the forming accuracy of multi-station presses under eccentric-load conditions,an eccentric-load resistant transmission system design method based on constraining the slider deformation was proposed.Taking a 1600 kN closed double-point press as the research object,a 3D model was established.Force analysis and finite element analysis(FEA)were conducted under conditions of different stations operated individually,to quantify the laws between slider tilt and eccentric load.The study found that the eccentric distance Δx=798 mm was the critical point for strength and motion accuracy(grade 1 accuracy ΔH<0.375 mm),with the allowable eccentric load F=825 kN.When Δx<798 mm,the system was limited by connecting rod strength,while when Δx>798 mm,it was constrained by slider precision.This revealed the inverse correlation between eccentric distance and allowable load,establishing the ultimate load spectrum for 12 stations.Under ultimate eccentric load conditions,the Z-direction deformation height difference(ΔH)of the slider was 0.0706 mm to 0.2442 mm,significantly lower than the allowable value of 0.375 mm,verifying compliance with grade 1 accuracy standards.The coupled model of"eccentricity-load-accuracy"was established for multi-station presses under eccentric-load conditions,which provided theoretical support for the design of high-precision stamping equipment.
作者
王超
庄伟鹏
陈承宝
杨青通
王勇
茆浩
WANG Chao;ZHUANG Weipeng;CHEN Chengbao;YANG Qingtong;WANG Yong;MAO Hao(School of Mechanical Engineering,Nantong Vocational University,Nantong 226000,Jiangsu,China;Nanjing Branch,Bosch Huayu Steering Systems Co.,Ltd.,Nanjing 210000,Jiangsu,China;Linyi Thousand Li Eyes Intellectual Property Agency,Linyi 276000,Shandong,China)
出处
《热处理技术与装备》
2025年第5期59-63,共5页
Heat Treatment Technology and Equipment
基金
南通职业大学自然科学应用研究项目(23ZK19)
南通市科技计划项目(MSZ2024035)
2024年江苏省职业院校学生创新创业培育计划项目。
关键词
闭式双点压力机
抗偏载能力
运动精度
closer double-point press
eccentric-load resistance
motion accuracy
