Design and Stability Analysis of Cantilever Low Pressure Casting Machine

doi:10.3969/j.issn.1000-1093.2019.08.020

Abstract

Abstract: The operating space of four-column low-pressure casting machine is very narrow, so it is inconvenient for the production of cavity castings with multi-openings and sand cores. A low pressure casting machine with main and auxiliary cantilevers which swing synchronously and the completely opened space above the worktable was designed. The forces acting on the main cantilever during the filling, holding and unloading stages of the castings were calculated by using the relevant knowledge of fluid mechanics. The maximum impact force is 35 302 N, and the maximum gravity is 4 606 N. According to the maximum clearance between the upper mold and the side mold, the main cantilever is made of Q235A hollow round steel with length of 1 200 mm, outer diameter of 270 mm and inner diameter of 235 mm. The finite element method was used to simulate and analyze the cantilever structure. The results show that the maximum deformation is 1.8 mm at the oil cylinder of upper die of cantilever. The cantilever low pressure casting machine prototype was test, which meets the performance requirements of military products. When the caster enters the packing stage, the distance between the upper mold and the side mold is 1.92 mm, which is within the allowable safety clearance. Key

Key words: lowpressurecastingmachine, cantilever, structuraldesign, stabilityanalysis, simulationanalysis

CLC Number:

TG233⁺.1

LIU Zhigang, AN Jianfei, SHI Xiaoping, PEI Chenghui, HUANG Dongnan, WEN Haijun. Design and Stability Analysis of Cantilever Low Pressure Casting Machine[J]. Acta Armamentarii, 2019, 40(8): 1700-1707.

References

［1］郑小秋, 谢世坤, 易荣喜, 等. 低压铸造技术:发展历程、研究现状和未来趋势[J]. 材料导报, 2016, 30(4):74-80.
ZHENG X Q, XIE S K, YI R X, et al.Low-pressure casting:retrospect, perspect and prospect[J].Materials Review, 2016, 30(4): 74-80.(in Chinese)
[2］ JIANG W M, FAN Z T. Gating system optimization of low pressure casting A356 aluminum alloy intake manifold based on numerical simulation[J]. China Foundry, 2014, 11(2):119-124.
[3］ ABHILASH V, MANU M V, SAVITHRI S. et al. Numerical simulation and experimental validation of free surface flows during low pressure casting process[J]. Journal of Materials Processing Technology, 2017, 244:320-330.
[4］冀焕明, 罗天骄, 杨院生. AZ80镁合金低压脉冲磁场半连续铸造过程的数值模拟和实验研究[J]. 中国有色金属学报, 2017, 27(3): 468-476.
JI H M, LUO T J, YANG Y S. Numerical simulation and experimental research of low voltage pulsed magnetic field DC casting of AZ80 magnesium alloy[J]. The Chinese Journal of Nonferrous Metals, 2017, 27(3):468-476.(in Chinese)
[5］ HORR A M, ANGERMEIER C, HARRISON A. Full through process simulation for low pressure die casting-from casting to design[J]. Materials Science Forum, 2014, 3225(794): 118-123.
[6］赵世季, 赵强. 镁合金机械臂低压铸造的数值仿真[J]. 热加工工艺, 2018, 47(5): 121-124.
ZHAO S J, ZHAO Q. Numerical simulation of low pressure casting of magnesium alloy mechanical arm[J]. Hot Working Technology, 2018, 47(5): 121-124.(in Chinese)
[7］江玉华. 中国低压铸造装备面临的机遇和挑战[J]. 铸造技术, 2007(12): 1572.
JIANG Y H. Opportunity and challenge for China low pressure casting equipments[J]. Foundry Technology, 2007(12):1572.(in Chinese)
[8］安建飞, 周锦华, 史晓平. 杠杆式悬臂低压铸造机：中国, CN206912216U[P]. 2018-01-23.
AN J F, ZHOU J H, SHI X P. Lever type cantilever low pressure casting machine:CN106914604A[P]. 2018-01-23.(in Chinese)
[9］吴晓明, 陈丽缓, 彭立广, 等.基于AMESim的低压铸造机液面加压系统的优化设计与分析[J]. 机床与液压, 2014, 42(10): 83-86.
WU X M, CHEN L H, PENG L G, et al. Optimization design and analysis of the low pressure casting surface pressure system based on AMESim[J]. Machine Tool & Hydraulics, 2014, 42(10):83-86. (in Chinese)

[10］秦家升, 赵继云, 王晓倩, 等.挖掘机液压冲击问题分析[J]. 机床与液压, 2008,36(9):273-275.
QIN J S, ZHAO J Y, WANG X Q, et al. Analysis of the hydraulic impact in excavator[J]. Machine Tool & Hydraulics, 2008,36(9):273-275.(in Chinese)
[11］许福玲, 陈尧明. 液压与气压传动[M]. 北京：机械工业出版社,2012.
XU F L, CHEN Y M. Hydraulic and pneumatic transmission[M]. Beijing: China Machine Press, 2012.(in Chinese)
[12］张伟博. 平衡挖掘机节能机理分析与研究[D]. 西安：长安大学,2012.
ZHANG W B. Analysis and research on the energy-saving me-chanism of balance excavator[D]. Xi'an：Chang'an University, 2012.(in Chinese)
[13］梅帅,陈飙松,张盛,等.开放式结构拓扑优化软件设计与研发[J].机械工程学报,2015,51(9):144-152.
MEI S, CHEN B S, ZHANG S, et al. Design and development of open style software system for structural topology optimization [J]. Journal of Mechanical Engineering, 2015,51(9): 144-152.(in Chinese)
[14］李志强, 张运章, 宋艳丽. 应力和位移约束下连续结构的有效拓扑优化方法[J]. 应用力学学报, 2013, 30(1):70- 75.
LI Z Q, ZHANG Y Z, SONG Y L. An efficient structural topological optimization method for continuum structures with stress and displacement constraints[J]. Chinese Journal of Applied Mechanics, 2013, 30(1): 70-75. (in Chinese)
[15］孙全兆, 杨国来, 葛建立.某火炮上架结构改进设计[J].兵工学报, 2012, 33(11):1281-1285.
SUN Q Z, YANG G L, GE J L. Improved design for top carriage of a gun[J]. Acta Armamentarii, 2012, 33(11):1281-1285. (in Chinese)
[16］田劼, 王苏彧, 穆晶, 等. 悬臂式掘进机空间位姿的运动学模型与仿真[J]. 煤炭学报, 2015, 40(11):2617-2622.
TIAN J, WANG S Y, MU J, et al. Spatial pose kinematics mo-del and simulation of boom-type roadheader[J]. Journal of China Coal Society, 2015, 40(11):2617-2622.(in Chinese)
[17］赵海东, OHNAKA I. 铝合金铸件充型过程及氧化膜卷入的数值模拟[J]. 中国有色金属学报, 2005,15(8):1200-1207.
ZHAO H D, OHNAKA I. Numerical simulation of oxide entrapment and mold filling process of Al casting [J]. The Chinese Journal of Nonferrous Metals, 2005, 15(8):1200-1207.(in Chinese)

第40卷
第8期2019 年8月兵工学报ACTA
ARMAMENTARIIVol.40No.8Aug.2019

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