机械毕业设计（论文）-立卧式组合机床液压系统设计.doc

立卧式组合机床液压系统设计
摘要
本文主要阐述了立卧式组合机床液压系统设计,通过组合机床动力滑台液压系统的工况分析、确定液压系统主要参数、制定基本方案,拟定液压系统原理图、液压元件的选择以及系统性能验算、绘制工程图,编制技术文件。熟悉机床液压系统的设计方法和设计步骤,使机床依次实现工件定位、夹紧、快进、工进、停留、快速退回等待下次加工等动作。设计出结构简单、工作可靠、成本低、效率高、操作简单、维修方便的液压传动系统。
本系统采用一台液压泵向多个液压缸供油,当系统对流量的需求量变化较大时,采用蓄能器增速回路,可减少系统的功率损失和发热。立卧式组合机床液压系统是用来控制液压动力滑台的,通过控制动力滑台来实现组合机床的各个动作从而完成工件的加工。本液压系统中有五个液压缸,其中两个为工作进给缸,一个定位缸,一个夹紧缸和一个输送缸。该系统中采用标准液压动力滑台,自动化程度高,定位、夹紧均有液压系统实现,进行工进立、卧滑台也可同时实现工作循环。满足各工位快进、工进、快退之间互不干涉的要求。采用进口节流加背压的调速方法,顺序背压阀在快进时只形成很小的背压,功率损失小;工进时该阀能自动的使背压加大,进给速度平稳。通过与电气系统的配合,可自动完成设计要求全部动作。
关键词:组合机床,动力滑台,液压系统,泵,蓄能器

全套图纸,加153893706

VERTICAL AND BINATION MACHINE HYDRAULIC SYSTEM DESIGN
ABSTRACT
This thesis describes bination of vertical and horizontal hydraulic system design,power sliding through bination of machine tool hydraulic systems working condition analysis to determine the main parameters of the hydraulic system, the development of the basic program, developed hydraulic system diagram, ponent selection and system performance checking, drawing engineering drawings and technical documents. Familiar with hydraulic system design methods and design steps, so that the machine in order to achieve workpiece positioning, clamping, fast forward, work into, stay, quickly returned to wait for the next processing and other activities. Design a simple structure, reliable operation, low cost, high efficiency, simple operation, easy maintenance, hydraulic drive system.
The system uses a hydraulic pump to a plurality of hydraulic cylinder oil, and when large changes of the flow demand, the use of growth accumulator circuit, the system can reduce the power loss and heat. Combination of vertical and horizontal hydraulic system is used to control the hydraulic power sliding table, by controlling the power slider to achieve bination of the various actions in order plete the machine workpieces. The hydraulic system has five cylinders, two of which work feeding cylinder, a positioning cylinder, a clamping cylinder and a delivery c