一种新型锻造操作机主运动机构运动学动态仿真及力学分析研究

发布时间：2018-04-29 23:22

本文选题：锻造操作机 + 主运动机构　；参考：《燕山大学》2015年硕士论文

【摘要】：大型铸锻件是我国重大装备制造业的重要基础和关键瓶颈,而锻造操作机是精确制造锻件的基本装备之一,用于夹持锻件配合锻压机完成锻压工艺,是锻造机械化与自动化的重要设备。近年来,国内外锻造车间普遍应用锻造操作机与自由锻造液压机联动实现机械化操作,形成了自动化的大型锻件自由锻造系统,从而显著地改善产品质量,提高劳动生产率。本文对操作机主运动机构进行了力学分析和运动学动态仿真设计。首先提出一种操作机主运动机构的计算机自动静力分析方法,只需输入机构结构信息和载荷信息即可求解出锻造操作机主运动机构所有连杆受力,分析了三种锻造操作机主运动机构受力,选出实际应用中优先考虑的机构;基于MATLAB编写出三种锻造操作机主运动机构自动静力分析软件,实现该三种操作机提升、俯仰、缓冲三个主运动各位置不同负载下的各铰点静力分析,自动绘制结构轴力、剪力和弯矩图;然后基于复合建模方法和最小模块的思想,提出一种锻造操作机主运动机构仿真模型构建的方法,并对一种新型三自由度锻造操作机主运动机构进行了运动学动态仿真,分析了给定驱动缸输入时夹钳末端的输出运动;最后在梯形速度曲线和正弦速度曲线两种不同运动规划下,运用拉格朗日法对一种新型锻造操作机主运动机构的驱动力进行求解,通过仿真得到两种规划下的驱动力曲线,并分析了两种规划的优劣。
[Abstract]:Large-scale casting forgings are the important foundation and key bottleneck of China's heavy equipment manufacturing industry, and forging operators are one of the basic equipment for accurate manufacturing forgings, which are used for clamping forgings with forging press to complete forging process. It is an important equipment for forging mechanization and automation. In recent years, forging workshops at home and abroad are widely used to realize mechanized operation by the linkage of forging operators and free forging hydraulic presses, which forms an automatic free forging system for large forgings, thus significantly improving product quality and increasing labor productivity. In this paper, the mechanical analysis and kinematics dynamic simulation design of the main motion mechanism of the operating machine are carried out. At first, a computer automatic static analysis method for operating the main motion mechanism of the forging machine is proposed. The force of all the connecting rods of the main motion mechanism of the forging machine can be solved by simply inputting the information of the structure and load of the mechanism. This paper analyzes the force of the main motion mechanism of three kinds of forging operation machine, and selects the mechanism that should be considered first in the practical application, and based on MATLAB, compiles three kinds of automatic static analysis software of the main motion mechanism of the forging operation machine to realize the lifting and pitching of the three kinds of manipulators. Static analysis of hinge points with three main motion positions and different loads, drawing the axial force, shear force and bending moment diagram of the structure automatically, and then based on the idea of compound modeling method and minimum module, This paper presents a method to construct the simulation model of the main motion mechanism of the forging operation machine. The kinematics dynamic simulation of the main motion mechanism of a new three-degree-of-freedom forging machine is carried out, and the output motion of the clamp end when the input of the driving cylinder is given is analyzed. Finally, the driving force of a new forging operating mechanism is solved by using Lagrangian method under two different kinematic planning of trapezoidal velocity curve and sinusoidal velocity curve, and the driving force curves under two kinds of planning are obtained by simulation. The advantages and disadvantages of the two programs are analyzed.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG315

【参考文献】