气缸有效缓冲时缓冲阀与调速阀的开度匹配关系研究

Research on the Opening Matching Relationship Between Cushion Valve and Speed Control Valve Under Effective Cushion of Air Cylinder

气缸的运行速度由回路调速阀控制,缓冲装置吸收的能量受缓冲阀影响,将两阀按照一定的开度关系进行调整,可获得较好的缓冲状态,提升气缸工作效率。搭建气缸缓冲实验台,进行缓冲实验,寻找两阀圈数的对应关系。建立相应的AMESim气动仿真模型,给出不同开度下气缸的缓冲效果。采用声速放气法测量气动元件有效节流面积,得到有效缓冲时缓冲阀与回路调速阀的面积匹配关系。结果表明:只有部分调速阀开度可以获得有效缓冲状态,缓冲阀仅能在特定的小范围变化,缓冲难以调整,可依据研究给出的两阀面积匹配关系图,快速调定缓冲。

The cylinder speed is controlled by the speed control valve in the circuit.The cushion valve affects the energy absorption of the cushioning device.For optimal cushioning and improved cylinder efficiency,two valves must be adjusted based on a specific openness relationship.A cylinder cushioning test bench is built to conduct experiments and find the corresponding relationship between the number of valve turns.An AMESim model simulates the cushioning effect at various valve openings.The sonic velocity discharge method measures the effective throttle area of pneumatic components,revealing the area matching relationship between the cushion valve and speed control valve when effective cushioning occurs.The results indicate that only certain openings of the speed control valve achieve effective cushioning,with the cushion valve adjustable within a narrow range,making precise adjustments difficult.The area matching relationship diagram helps enable quicker cushion adjustments.