磨床电液比例控制容积调速系统

GRINDER SPEED ADJUSTING SYSTEM BY ELECTRO-HYDRAULIC PROPORTIONAL CONTROL VOLUME

本文叙述了一个用于高精度平面磨床调速系统的设计。系统使用变量叶片泵作为流量控制元件,使用两个电液比例阀作为先导阀控制叶片泵的偏心量。这个偏心量由一个位移传感器转化为电信号并反馈至比例放大器,与传统系统相比,新系统不仅节能而且所产生的热量也减少了。由于采用了电液比例控制,系统操作非常方便。

This paper describes a soeed adjusting system design used for high-precision flat surface grinder. Variable vane pump is used as flow control element in the system, whereas two electrohydraulic proportional valveacts as leading valve controlling the eccentricity of the vane pump. This eccentricity is transformaed into electric signal through a displacement sensor, and feeds back to proportional amplifer, this new system, compared with conventional system, not only saves energy, but also reduces heat, and this system is easy in operation because of the electro hydraulic proportional control.