Affiliation of Author(s):机电学院
Journal:Xiyou Jinshu Cailiao Yu Gongcheng
Abstract:According to separation of a blank into removed materials and formed workpiece, the initial residual stress can be divided into released stress and efficient stress so that the static equilibrium conditions and bend deformation theory were used to deduce the analysis model of machining deformation and its finite element method. And then, the measurement experiment of machined workpieces, carried out in NC machining factory, shows that the simulated results are in good agreement with the measured data for both the amplitude and deformation curves. There is only 10% difference of the amplitude between the two. Finally, based on the simulated values of the machining deformation at two adjacent positions, the signs of machining deformation can be obtained. According the determination principle of the next position that the step is invariant if the signs are the same while the step is decreasing if the signs are different, a crossover iterative method is presented for the optimal machining position. In comparison with middle position method which is frequently employed by the enterprises, the presented crossover iterative method can decrease machining deformation by 99.79%. © 2019, Science Press. All right reserved.
ISSN No.:1002-185X
Translation or Not:no
Date of Publication:2019-04-01
Co-author:Qin, Guohua,Lin, Feng,zdw,Han, Xiong,Chen, Xuemei
Correspondence Author:whm
Date of Publication:2019-04-01