全膜双垄沟播直插式玉米播种装置双面凸轮的设计-湖南农业大学学报.PDF

() 2015 2 41 1 Journal of Hunan Agricultural University (Natural Sciences), Feb. 2015, 41(1):094–098 DOI:10.13331/ki.jhau.2015.01.018 全膜双垄沟播直插式玉米播种装置双面凸轮的设计 * ( 730070) 摘 要 xy 0.092 mm Von–Mises 67 MPa 关 键 词 中图分类号S223.2 文献标志码：A 文章编号：1007− 1032(2015)01−0094−05 Design of double-track cam of direct insert corn planting furrow seeder for whole plastic-film mulching on double ridges * Li Xingrui, Shi Linrong, Zhao Wuyun , Dai Fei (College of Engineering, Gansu Agricultural University, Lanzhou, 730070, China) Abstract: In order to improve the precision of the horizontal displacement and reduce the vibration of punching rod controlled by single-track cam a double-track was designed for direct insert corn planting furrow seeder for whole plastic-film mulching on double ridges. Based on the virtual prototype of direct insert corn planting furrow seeder, the inside/outside contact curves of double-track cam were generated to design the cam. The sharp singularity transition in the contact curves of double-track cam could cause too vigorous impact between the cam and the rod to achieve the expected movement, even completely stop. So it is necessary to optimize the singularity transition by arc curve. The disp