应用迭代补偿机制的轴类零件校直系统研究  

Research on Intelligent Straightening Process System of Shaft Parts Based on Iterative Compensation Mechanism

作　　者：魏东坡 马瑞[3] WEI Dong-po;MA Rui(School of Mechanical Engineering,Tianjin University of Technology and Education,Tianjin 300222,China;School of Mechanical Engineering,Shandong Huayu University of Technology,Shandong Dezhou 253034,China;College of Mechanical Engineering,Yanshan University,Hebei Qinhuangdao 066000,China)

机构地区：[1]天津职业技术师范大学机械工程学院,天津300222 [2]山东华宇工学院,山东德州253034 [3]燕山大学机械工程学院,河北秦皇岛066000

出　　处：《机械设计与制造》2022年第3期118-123,共6页Machinery Design & Manufacture

基　　金：河北省自然科学基金(E2015203244);山东省高等学校科技计划项目(J17KA034)。

摘　　要：以往弯曲回弹的研究多是通过单次理论计算或数值模拟方法获取控制回弹的参量,然而理论模型采用了多种近似条件,其计算结果多不能直接用于解决实际问题,难以通过一次校直达到目标精度。数值模拟则对材料模型的要求较高,其模拟结果仅可用于参考。因此,本文提出一种基于挠度的迭代补偿校直算法。针对平面单弧度轴类零件弯曲回弹问题,分别建立了差值法和弦截法迭代补偿校直模型。在此基础上研制了一台小型轴类零件智能校直机,并将上述迭代补偿校直算法嵌入基于LabVIEW和PLC开发的校直控制系统,进一步实现了智能校直。实验结果表明,该迭代补偿校直模型不依赖材料模型,开发的智能校直机具有较高的校直效率和校直精度。Previous researches on bending springback mainly rely on single theoretical calculation or numerical simulation^but the theoretical model cannot be directly used to solve practical problems because of the theoretical model use a variety of approximate conditions.Numerical simulation has higher requirements for the accuracy of material model,and the simulation results can only be used,for reference.Therefore,an iterative compensation method is proposed based on deflection.Two iterative compensation straightening model are established based on the difference method and secant method respectively,which are used to solve the bending springback problem of shaft parts with plan single deflection.On this basis,an intelligent straightening machine for shaft parts is developed.The automatic control of straightening process is realized by using PLC and servo motor.Based on LabVIEW platform^the above iterative compensation straightening algorithm is embedded in the straightening control system to achieve intelligent straightening.The experimental results show that the iterative compensation straightening model does not depend on the material model,and has general convergence and high convergence precision for the springback compensation problem.The intelligent straightening machine has high straightening efficiency and accuracy.

关 键 词：迭代补偿 挠度 智能校直 控制系统 

分 类 号：TH16[机械工程—机械制造及自动化] TG386.1[金属学及工艺—金属压力加工]