关 键 词：

点焊 工作台 设计 磁头 激光

资源描述：

点焊工作台的设计【磁头激光点焊】,点焊,工作台,设计,磁头,激光

内容简介：

南华大学机械工程学院毕业设计（论文) The design of laser spot welding bench Abstract: With the rapid development of computers, computer peripheral equipment especially hard drive are incline to miniaturization, high density and high speed. Hard disk drive is borne by the recording medium disk, to read and write head, signal processing system, a magnetic head and disk mechanical driving system. After more than 10 years of research, and with the new material unceasingly produces, hard drive size has been from the beginning of the14 inch decreases gradually to 3.5 inches,2.5 inches and1.8 inches. As a hard disk drive magnetic head core components, smaller size, higher precision, better performance. As the head performance is improved, the processing and welding method is put forward just got requirements. In the quality of the head and the PCB board welding is used in laser welding. Laser welding, the energy density required is low, as long as the processing area of the workpiece burn, and the adhesive can be together. Therefore, can reduce the laser output power. According to the different forms of joint, the laser welding can also be divided into docking, termination, direct connection, deep penetration fusion welding. Laser welding can be used with either the pulse welding, can also be used for continuous welding. Laser welding has the advantages as follows: illumination time is short, the welding process is rapid, not only improve productivity, but also the heat affected zone of pin, is not easy to be oxidized, suitable for welding of heat sensitive materials; laser welding without welding slag, also do not need to remove the oxide film, can be through the glass in a vacuum, applicable to miniature machine instrumentation welding; laser welding working range, can achieve a variety of material connection, such as ceramics metal connection. At the same time ,welding fixture design can improve the efficiency and precision of magnetic he