面向冲床冲击力测量的单分量重载传感器

为了测量冲击载荷达150 t,冲击频率为10 Hz的冲床冲击载荷,降低产品的废品率,本文设计、制造和评估了一种新颖的单分量重载传感器,冲床安装空间限制了该传感器的结构尺寸为Φ166 mm×45 mm,该传感器为4个支撑梁和1个应变梁组成的整体式结构,可保证传感器同时具有高刚度和高灵敏度。用一台300 t万能液压机进行静态标定,标定结果表明传感器的绝对误差达到2%。最后,现场实验进一步鉴定传感器的性能。

Single-Piece Heavy-Load Sensor for Impact Force Measurement of Punch

To reduce the rejection rate of products,a novel single-piece heavy-load force sensor with a full-scale load of 150 t and a working frequency of 10 Hz is designed,manufactured and evaluated for the dynamic impact force measurement of the punch.The confined space of the punch holder limits the size of the fabricated sensor at Φ166 mm×45 mm.The sensor is characterized by an integrated fixture with four bearing carriers and one strain beam,which can ensure both strong stiffness and high sensitivity for the sensor simultaneously.A universal hydraulic machine with full-scale 300 t is employed to accomplish static calibration.The results show that linear calibration slopes for the sensor is within 2%.Site test is then performed for further verifying sensor performance.