重庆理工大学学报（自然科学版）2018，Vol.32Issue(3)：62-67,6.DOI:10.3969/j.issn.1674-8425(z).2018.03.009
齿轮空心坯正挤压工艺参数对同心度的影响规律研究
Influence Law Research of Forward Extrusion Process Parameters on Concentricity of Gear Hollow Billet
摘要
Abstract
Based on the problem of the concentricity difference between the inner hole and the outer circle of the parts when the planetary gear hollow billet is being squeezed,numerical simulation analysis of metal flow law in the forming process of the part is carried out by using the finite element plastic software DEFORM-2D,and the effect of the radial offset error between the lower punch and the die,the working tape and the cone-apex angle on the bending deformation of the lower punch are analyzed by using the tracing point method.The simulation results show that controlling the radial offset error between the lower punch and the die,reasonably selecting the length of the working tape and the cone-apex angle can reduce the bending deformation of the lower punch and ensure the concentricity of the parts.The process experiments shows that the concentricity of the parts can be improved effectively by reducing the radial offset error,selecting the optimum working tape and the cone-apex angle.关键词
空心坯/正挤压/工艺参数/弯曲变形/同心度Key words
hollow billet/forward extrusion/process parameters/bending forming/concentricity分类
矿业与冶金引用本文复制引用
冯文杰,况智允,陈莹莹,王萍,刘左发..齿轮空心坯正挤压工艺参数对同心度的影响规律研究[J].重庆理工大学学报（自然科学版）,2018,32(3):62-67,6.基金项目
重庆市科委资助项目(cstc2014yykfA60001) （cstc2014yykfA60001）
重庆市教委科学技术研究资助项目(KJ1400944) （KJ1400944）
