弹性模量损伤率对精密冷成形件精度的影响  

Elasticity Modulus Loss Rate of Influence the Precision Cold-Forming

作　　者：蒋定举[1] 滕生磊[2] 钟尚军[2] 

机构地区：[1]贵州教育学院,贵州贵阳550003 [2]贵州大学机械工程学院,贵州贵阳550003

出　　处：《贵州工业大学学报（自然科学版）》2008年第6期15-17,共3页Journal of Guizhou University of Technology(Natural Science Edition)

摘　　要：弹性模量是影响精密冷成形件的重要材料性能参数,在挤压数值模拟和工程应用中一般认为弹性模量为常数。而实际上,弹性模量随塑性变形的增大会发生一定程度的变化,其变化对成形精度在0.05 mm以下的冷成形件有很大影响。通过对滑履件成形精度的分析计算,确定弹性模量损伤率的影响,对模具进行重新设计,成功解决了滑履件高精度问题。Elasticity modulus is an important material property which affects the precision cold - forming. In the extrusion simulation and engineering application, elasticity modulus is considered as constant. But in fact, elasticity modulus continually changes as plastic deformation increases. Therefore, it makes great effect on which the precision of the cold - forming under 0. 05mm. Through calculation and analysis of the precision of slippery footstep, the paper confirms the influence of the elasticity modulus loss rate, redesigns the mould, has succeeded in solving the high - precision problem of slippery footstep.

关 键 词：球面滑履 弹性模量 误差 

分 类 号：TH123.1[机械工程—机械设计及理论]