论文部分内容阅读
1、液压阀在液压系统中控制什么? 任何一个液压系统的液压阀,必须满足下述三个基本控制作用: (一)控制执行元件的运动和动作顺序。例如液压机床的刀具相对工件的运动通过油缸来实现,则要求油缸将刀架快速趋进工件,接着按进给速度进行切削,直至加工结束。然后,改变油路方向,使油缸拖动刀架快速返回原处。我们称这种用来控制油路流动方向或改变油路实现动作顺序的这类元件为方向控制阀。(二)控制液压系统的压力,即限止或稳定系统的压力,以免过载或压力损失过大,或
1, hydraulic valve control in the hydraulic system what? Any hydraulic system hydraulic valve, must meet the following three basic control functions: (A) control the movement of actuators and the order. For example, the hydraulic machine tool relative to the workpiece movement through the cylinder to achieve, you need the cylinder will quickly into the workpiece turret, and then feed rate of cutting, until the end of the process. Then, change the direction of the oil path so that the oil cylinder will drag the tool holder to quickly return to the original position. We call this type of directional control valve that controls the flow direction of the oil or changes the order of the oil paths. (B) control the hydraulic system pressure, that is, limit or stabilize the system pressure, so as to avoid overload or pressure loss is too large, or