毕 业 设 计 (论 文)专 业 机械设计制造及其自动化 班 级 14 机械制造与自动化 学生姓名邓瑞祥学 号 143507107 课 题关于多自由度机械手机械设计 指导老师 谢祖华2024 年 5 月 28 日摘 要文中设计了一种六自由度机械手。该机械手主要由底座，腰部，主板，大手臂，小手臂，手腕，夹爪组成，采纳步进电机驱动，单片机控制。手臂的尺寸与人手臂的大小相当。手臂的运动主要包括：腰部转动，大手臂摆动，小手臂摆动，手腕摆动，手腕转动，夹爪夹取。此手臂的空间活动半径 0.5m，定位精度为 5mm.它能够抓取重量较轻的物体，并放到预定位置。该机械手有过载保护以及断电空间位置的自锁功能.可以用于教学演示，或者在有放射性的环境中完成特定工作。文中对机械手进行了正运动学分析, 采纳齐次坐标变换法得到了机械手末端位置和姿态随关节夹角之间的变换关系,并完成了总体机械结计、步进电机选型、蜗轮蜗杆及带传动比的确定以及部分重要零件的设计。关键词：机械手六自由度步进电机同步带 。AbstractA kind of manipulator of six degrees of freedom has been designed in this paper. This manipulator is made up of the foundation, the waist, the big arm, the small arm, the wrist, and the claw; the manipulator is driven by stepper motor, and controlled by single chip. The size of the manipulator is equal in the size to the arms of people. Locomotion of the manipulator includes: waist turning, big arm swung, small arm swung, wrist swung, wrist rotating, claw fetching. The radius of action is 0.5m, and the accuracy is 5 mm. It can pick the light-weight object, and put it to the recalculated position. The manipulator has overload protection function, and space position self-lock function. This arm can be used in teaching, or in radioactive environments. In this paper, robot kinematic analysis is carried out using homogeneous coordinate transformation method was the end manipulator joint position and attitude with the changing relationship between the angle and stepper moto...
