高精度非回转类液压元件精密加工技术研究

Research on Precision Machining Technology for High-precision Non-rotary Hydraulic Components

针对液压系统中非回转类阀、泵等液压元件的高精度特点,以上阀体零件为例,采用模态分析、动态切削力分析及瞬态响应分析等方法,对上阀体加工过程的变形规律及切削力状况进行了分析,研究了不同装夹方式对零件加工质量的影响。通过改进上阀体夹具设计方案,设计制造了高精度夹具,并以此消除了加工过程产生的不平衡力和不平衡力矩,解决了上阀体加工过程中的变形及振动问题,最终实现了此类高精度非回转类液压元件的精密制造。

According to the requirements of high-precision for non-rotary hydraulic components, machining deformation rule and cutting force situation were investigated with upper valve body as an example by using modal analysis, dynamic cut- ting force analysis and transient response analysis technology. The effects of clamping methods on the machining quality of the upper valve body were also studied. Unbalanced force and unbalanced moment were eliminated by designing high-precision clamping; the machining distortion and vibration problem were also solved. Precision manufacturing has been achieved on high-precision non-rotary hydraulic components.