A pressure fault detection system and method for a servo press

Abstract

The invention belongs to the technical field of press detection, and in particular relates to a pressure fault detection system and method of a servo press. The present invention uses the pressure of the press and the torque of the motor as the pressure fault detection index to obtain the threshold range of the pressure of the press and the torque of the motor, and compares the detected value of the press measured by the pressure sensor with the output torque value of the servo drive, thereby achieving Real-time fault detection and real-time fault alarm.

Description

technical field [0001] The invention belongs to the technical field of press detection, and in particular relates to a pressure fault detection system and method of a servo press. Background technique [0002] At this stage, in the industry of servo presses, pressure faults are mainly detected through the feedback values ​​of pressure sensors installed on the four side columns of the servo press. The detection principle is as follows: When the control mode is position control, deformation will occur on the four side columns of the press during the downward process of the slider of the press, and the pressure sensors fixed on the side columns will also deform to varying degrees. The pressure sensor detects the deformation of the strain gauge to generate a corresponding pressure value signal, which is transmitted to the control system through the signal detection circuit. During the forming process of the entire press, the pressure is the highest at the bottom dead point. Mos...

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Problems solved by technology

The disadvantage of the above two existing methods is that it can only detect the failure of the maximum pressure exceeding the nominal pressure of the press at the bottom dead center, but cannot detect the abnormal pressure state in other stroke ranges

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