数控搅拌摩擦焊设备二维功能控制系统的设计与实现

发布时间：2018-08-20 11:56

【摘要】：搅拌摩擦焊技术作为一项新型的绿色焊接技术,自发明以来,历经近20年的研发和工业应用,已获得国际学术界和工业界的广泛关注,并在航空、航天、船舶、列车、汽车、电力、电子等工业制造领域发挥了巨大作用,创造了可观的社会经济效益。搅拌摩擦焊工艺特点要求搅拌摩擦焊搅拌头与焊缝始终保持一定的工艺倾角,以达到锻造的作用,使焊接组织致密,消除了疏松,气孔等熔化焊常见的缺陷,获得优异的焊接接头。随着搅拌摩擦焊技术在业界的不断推广和应用,对于平面二维曲线焊接的要求越来越强烈,因此,开发出一种能焊接平面二维曲线的搅拌摩擦焊设备,实属必要。论文主要研究工作如下：1.从搅拌摩擦焊工艺倾角出发,研究其在平面二维曲线焊缝焊接中的变化规律。2.在工艺倾角的变化的前提下对焊接平面曲线焊缝和搅拌摩擦焊接设备进行了研究,表明在需求上共需要四个轴的控制：X轴、Y轴、Z轴和C轴。3.研究平面二维曲线焊缝搅拌摩擦焊设备的运动形式,在此基础上设计平面二维曲线焊缝静龙门搅拌摩擦焊设备总体布局方案,设计机械传动系统图。4.引入数控技术,构建用于控制平面二维曲线焊缝静龙门搅拌摩擦焊设备的基于发格8055数控系统总体方案,并对主要硬件进行选型,设计系统控制电路。5.对数控系统的软件结构体系做了分析,利用发格8055数控系统专用编程语言,开发了适用于搅拌摩擦焊的切线跟踪及长度补偿功能。并通过试验验证了上述工作的正确性。本课题的研究成果对平面二维曲线焊缝搅拌摩擦焊设备开发具有重要的实际意义。
[Abstract]:As a new green welding technology, friction stir welding (FSW) technology has been widely concerned by the international academia and industry since it was invented, and has been widely concerned by the international academia and industry since its invention, and has been widely used in aviation, aerospace, ships, trains, automobiles, etc. Electric power, electronics and other industrial manufacturing fields have played a great role in creating considerable social and economic benefits. The characteristics of friction stir welding (FSW) process require that the FSW stir head should always maintain a certain inclination angle with the weld seam, so as to achieve the effect of forging, to make the welding structure dense, and to eliminate the common defects in melting welding, such as porosity and porosity, etc. Excellent welded joints are obtained. With the development and application of friction stir welding (FSW) technology in the industry, the requirement of planar 2D curve welding is becoming more and more intense. Therefore, it is necessary to develop a friction stir welding equipment which can weld planar 2D curves. The main research work of this paper is as follows: 1: 1. Based on the obliquity of friction stir welding process, the variation rule of friction stir welding in plane two dimensional curve welding is studied. The welding plane curve weld and friction stir welding equipment are studied on the premise of the change of process inclination angle. The results show that the control of four axes is needed, namely, Z axis and C axis. 3. This paper studies the movement form of plane two-dimensional curve weld friction stir welding equipment, designs the general layout scheme of plane two-dimensional curve weld static gantry friction stir welding equipment, and designs the mechanical transmission system diagram .4. With the introduction of numerical control technology, the overall scheme of Fagger 8055 numerical control system based on Fagger 8055 is constructed to control the plane two-dimensional curve weld static gantry friction stir welding equipment. The main hardware is selected and the control circuit of the system is designed. The software structure of NC system is analyzed and the tangent tracking and length compensation function for friction stir welding is developed by using the special programming language of Fagger 8055 NC system. The correctness of the above work is verified by experiments. The research results of this paper have important practical significance for the development of friction stir welding equipment for planar two-dimensional curve welding seam.
【学位授予单位】：中国科学院大学(工程管理与信息技术学院)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG409

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