切纸机压纸机构的结构设计.docx

本次毕业设计的课题是压纸机构的设计。在选定毕设课题后，我进行了方案的拟定。 初步拟定了两个方案，其一是用丝杠传递压力进行设计的压纸机构，其二是采用连杆传 递压力而设计的压纸机构。但是本次设计要求压纸的最大压力为35KN,所以采用丝杠 传递动力会使得整个机构显得很大，成本也会提高。最终确定了使用连杆传递压力，而 采用液压系统提供动力和压纸的速度，这样整个机构就不会太大，成本大大降低，而且 能够高效的工作。 本次课题设计的压纸机构的工作原理是：通过电动机带动液压泵运动，液压泵在 液压系统中产生动力通过液压系统使液压缸的液压缸进行伸缩运动，液压系统提供的运 动和力通过连杆传递到压纸部件，从而实现压纸机构压纸和压纸后的退回工作。而压纸 机构的构成为：压纸架，连接压纸架与连杆的连接件，底板小底板，用于固定的各轴， 滑块以及把滑块和连杆连接的轴及轴承，连杆能在滑块中运动。本文中对于各结构件进 行了结构设计、尺寸设计和材料的选择，完成尺寸和机构设计后，对承受压力较为敏感 的零件进行了校核，最终证明整个机构符合强度和刚度要求，最后编制了重要零件的加 工工艺。 最后是液压系统的设计，根据要求对液压系统进行设计。选定各种液压元件后绘制 了液压系统图。然后就是对各种元件的校核，结果证明符合要求。这样就完成了整个设 计。 关键词:压纸机构；液压系统；压纸部件；连杆；连接件 Abstract The graduation project is the subject of the platen mechanism design. Albert located at the selected topic, I did a program development. Initially developed two programs, one of which is designed with a delivery pressure screw platen mechanism, and the second is the use of rod designed transmit pressure platen agency. However, this design requires platen maximum pressure of 35KN, so the use of screw transmission of power will make the entire organization becomes large, the cost will increase. Ultimately determine the use of link transmit pressure, while the use of hydraulic systems provide power and speed of the platen so that the entire organization will not be too large, greatly reduce the cost, but also to efficient work. The topic of the platen mechanism designed working principle is: the hydraulic pump driven by a motor movement, the pump in the hydraulic system, hydraulic system to generate power by the hydraulic cylinder for telescopic movement of the hydraulic cylinder, the hydraulic system of motion and force by connecting transmitted to the platen unit lever, enabling organizations platen platen and the platen returned after work. The mechanism is constituted by the platen: a platen holder, the platen frame and the connecting rod connecting member, the small base plate, for fixing each axis, the slider and the slider and the axis of the connecting rod and bearing, even rod i