摘要随着科技的发展,机械臂的技术越来越趋于成熟,部分机械臂已经能够取代人类去执行一些危险的任务,譬如火星的探测。本文设计了一个火星探测车车载机械臂,主要在结构上满足探测的要求。部分采用了模块化设计,基关节、肘关节、基关节采用了相同的结构;为了使机械臂既满足轻量化又满足一定的强度要求,本文对机械臂部件进行了相关的设计和有限元分析。根据其负载情况选择驱动电机和谐波减速器的型号。建立了机械臂关节坐标系模型,推导出机械臂运动学正解公式,并采用逆变换方法,求出机械臂运动学逆解公式,是关节的轨迹规划的基础。当然,车载机械臂的体积也是一个要考虑的问题,包括放置姿态在未工作时能保持在一个很小的空间,这些都是要考虑的问题。47282
毕业论文关键词:轻量化机械臂 结构设计 有限元分析
Abstract
With the development of science and technology , the technology of robotic arm is more and more mature , part of the robotic arm has been able to replace human to perform some dangerous task , such as Mars exploration .
This paper is about a design of a Mars rover vehicle arm,mainly in the structure to meet the detection requirements , Part of the design uses a modular thinking , base joint , elbow joint , the base joint adupts the same structure , In order to make the robotic arm meet the requirements of lightweighte and certain strength requirements , the paper have do the related design and finite element analysis of robotic arm . Select the drive motor and reducer according to the load model.Established the model of the manipulator joint coordinate system , derive the manipulator kinematics solution formula and use transformation method . Calculate the manipulator inverse kinematics solution formula , this is the basis of the joint trajectory planning . Of course , the vehicle of the robot arm is considered a problem , Including placed posture can be maintained in a small space when not working , These are issues to consider.
Keywords: Lightweight robot arm Structural design Finite Element Analysis
目 录
第一章 绪论 1
1.1 研究背景 1
1.2.1 国外研究现状 2
1.2.2 国内研究现状 3
1.3 械臂的研究目的与意义 4
1.4 主要研究内容 5
第二章 相关软件介绍 6
2.1 AUTOCAD的介绍 6
2.1.1 AutoCAD的定义 6
2.1.2 AutoCAD的基本功能 6
2.2 SOLIDWORKS的介绍 7
2.2.1 soliworks的定义 7
2.2.2 solidworks基本功能(主要介绍本设计需要的功能) 8
第三章 机械臂总体方案设计 10
3.1 械臂的各个构成系统 10
3.2 动作方案机械臂的自由度分析 11
3.3 机械臂动作方案设计 11
3.3.1机械臂介绍及常用形式 11
3.3.2 机械臂的选型分析 13
第四章 驱动方式 15
4.1 机械臂驱动方式