文档介绍：叉车液压系统集成块及其加工工艺的设计
设计总说明
随着中国经济建设步伐的加快,各种工程建设也会不随之增多,在工程建设中也就离不开各种起重设备。目前起重设备的控制系统主要是机械液压控制,随着液压元件、微机技术和信息技术的不断发展,智能液压起重设备即将出现。那时这种设备可以替代人们做更多的繁重工作,为人类的发展起到重要的作用。
在比较大型和复杂的液压系统中,使用集成块可充分利用各种液压元件的功能,使结构更紧凑,密封性更好,便于安装和调试。但是集成块专用性强,表面安装的液压元件多,集成块体内孔系复杂,因此,按照液压原理图的逻辑要求,正确合理地设计集成块,是一项艰巨而又要求准确性高的工作。
在集成块的加工前,对集成块中的油路直径进行计算,绘制出集成块的pro/e三维图,包括每个侧面的视图和各层剖视图,将孔径、孔深和孔与孔的连接号绘制成表,方便加工。选择45号钢作为毛坯材料,确定其加工余量、毛柸尺寸与公差。选择出合理的加工方法,拟定出加工工艺路线,绘制出加工工艺过程卡片和加工工序卡片。确定切削用量,使用合理的专用夹具。加工中,以“先面后孔”“粗精分开”“先粗后细”等原则对集成块进行面加工、孔加工以及安装孔螺纹的加工。
本次设计得到了各位老师的精心指点和教诲,对于集成块部分的设计思路清晰,说明充分,不过也存在着不少瑕疵,比如对于集成块中内部油道的设计和加工,没有考虑周全。
关键词:液压系统、液压集成块、集成块的设计、加工工艺
General Description Of Design
As China's economic construction, speed up the pace of the engineering construction will also increase; engineering construction also cannot leave the hoisting machinery. At present the control system is mainly crane mechanical hydraulic control,Along with the ponents, computer technology and information technology, the development of the intelligent hydraulic crane ing in. Then the "giant" can replace people do harder work for human development have can't estimate role.
paring the large plex hydraulic system, the chip can take full advantage of the use of a variety of ponents, enabling a pact structure, seal brtter, easy to install and debug. However, a dedicated chip is strong, sueface-mount ponents and plex holes in valve body, therefore, in accordance with the hydraulic schematic diagram of the logic of the requirements of reasonably correct chip design is a difficult and require high accuracy job.
before the integrated block processing, Perform calculations on integrated block hydraulic diameter draw out the integrated block processing maps, including each side view and each Layer cutaway view, aperture, hole depth and the number of hole and hole connection is drawn into a table, convenient processing. Selection of 45 steel as blank material, determine the processing allowance, blank dimensions and tolerances. Choi