|
摘要：
|
|
为了分析机械压力机工作机构的运动学特性，应用矢量方程解析法对曲柄肘杆机构进行了运动学分析，在封闭矢量图基础上建立了机构的位移方程，推导了对应速度方程和加速度方程，并得到待求量的解析式；采用机构数值分析法对运动学模型进行了求解分析，设计了运动学方程计算程序框图，基于MATLAB软件编写了计算程序，对非线性运动学方程进行数值求解，并对计算结果进行图形化处理，得到了肘杆摆角以及滑块位移、速度和加速度运动曲线；利用计算结果定量分析工作机构的肘杆摆角极限、最大滑块行程、滑块平均速度与标准方差，并验证了曲柄肘杆机构的设计合理性。
|
|
In order to analyze the kinematic characteristics of working mechanical for mechanical press, the crank toggle mechanism was analyzed on kinematics by the vector-equation analytical method, and the displacement equations of machanism were built based on the closed vector diagram. Then, the velocity and acceleration equations were derived, and the unknown quantities were obtained. Next, the kinematics model was solved and analyzed by numerical analysis method, and the block diagram for calculation program of kinematic equation was designed. Furthermore, the calculation program was written based on the software MATLAB, and the numerical solution of these nonlinear motion equations was conducted. Finally, the toggle swing angles, slide motion curves of displacement, speed and acceleration were obtained, and the graphical process for calculation results was conducted. By these graphically quantitative results, such as limitation of swing angles, the maximal displacement of slide, mean velocity of slide and standard deviation, the rationality of design for the toggle working mechanism could be verified.
|
|
基金项目：
|
|
国家自然科学基金资助项目（51607042）
|
|
作者简介：
|
|
作者简介：杨春红（1982-），女，硕士，讲师
E-mail：yangch_ch@sina.com
|
|
参考文献：
|
［1］阮卫平,胡建国,孙友松.伺服机械压力机传动方案分析[J]. 锻压技术,2010,35(4):67-71.
Ruan W P,Hu J G, Sun Y S.Analysis of transmission plans of servo mechanical presses[J].Forging & Stamping Technology, 2010,35(4):67-71.
［2］何予鹏, 赵升吨, 王军,等. 具有低速锻冲特性的机械压力机工作机理[J]. 机械工程学报, 2006, 42(2):145-149.
He Y P,Zhao S D,Wang J, et al. Working mechanisms of the mechanical press with low-speed porging-stamping[J]. Chinese Journal of Mechanical and Engineering,2006,42(2):145-149.
［3］褚金奎，郭晓宁.Stephenson六杆机构可动性研究[J].机械工程学报,2004,40(11):26-35.
Chu J K, Guo X N. Research on mobility of Stephenson six-bar linkages[J]. Chinese Journal of Mechanical and Engineering,2004,40(11):26-35.
［4］孙友松,周先辉,黎勉,等.交流伺服压力机及其关键技术[J].锻压技术,2008,33(4):1-8.
Sun Y S, Zhou X H, Li M, et al.The AC servo-press and the key technologies[J].Forging & Stamping Technology, 2008,33(4):1-8.
［5］高峰,郭为忠,宋清玉,等. 重型制造装备国内外研究与发展[J].机械工程学报,2010, 46(19):92-107.
Gao F, Guo W Z, Song Q Y, et al.Current development of heavy-duty manufacturing equipments[J]. Chinese Journal of Mechanical and Engineering, 2010, 46(19):92-107.
［6］赵升吨，陈超，崔敏超，等.交流伺服压力机的研究现状与发展趋势[J]. 锻压技术,2015,23(2):1-7.
Zhao S D, Chen C, Cui M C, et al. The research status and development trend on the AC servo-press[J].Forging & Stamping Technology, 2015,23(2):1-7.
［7］赵匀.机构数值分析与综合[M].北京: 机械工业出版社,2005.
Zhao Y. The Numerical Analysis and Synthesis on Mechanism[M].Beijing: China Machine Press ,2005.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
