Method of calibrating output torque of reducer detector

Abstract

The invention discloses a method of calibrating the output torque of a reducer detector. The method adopts a calibrator and the following steps for calibration: firstly, verifying a calibrator, and obtaining a corresponding relationship between an input torque value of the calibrator during the verification and a torsional deformation angle value of a torsional rod during the verification; and secondly, obtaining a torsional deformation angle value of the torsional rod during calibration, replacing the torsional deformation angle value of the torsional rod during the verification with the torsional deformation angle value of the torsional rod during the calibration, finding out the input torque value of the calibrator during the verification from the corresponding relationship, the torque value being an output torque value of the reducer detector, replacing a readout value output at a corresponding moment with a torque sensor of the reducer detector, and obtaining a corresponding relationship between a readout value of the torque sensor of the reducer detector and the output value for application during the torque measurement using the reducer detector. According to the invention, the torque sensor of the reducer detector can be quickly calibrated on site so that the torque measurement of the reducer detector can be more accurate, and the precision tracing is realized.

Description

technical field [0001] The invention relates to a method for calibrating torque, in particular to a method for calibrating output torque of a speed reducer detector. Background technique [0002] The torque sensor is the core component of the reducer test device, and the measured torque value is also an important basic quantity representing the performance of the reducer, so the calibration of the torque sensor is very important. At present, the torque sensors of domestic reducer test devices are all traced to the source of accuracy by submitting for inspection, and only a few domestic verification institutions have the ability to verify the torque value above 5000Nm, which is not only troublesome to disassemble, but also takes too long to verify. To the normal detection work of the user unit, errors such as coaxiality caused by disassembly and assembly also affect the accuracy of the indication. In addition, the torque calibration method of the existing reducer test device...

AI Technical Summary

Problems solved by technology

At present, the torque sensors of domestic reducer test devices are all traced to the source of accuracy by submitting for inspection, and only a few domestic verification institutions have the ability to verify the torque value above 5000Nm, which is not only troublesome to disassemble, but also takes too long to verify. To the normal detection work of the user unit, the error of coaxiality caused by disassembly and assembly also affects the accuracy of the indication value

In addition, the torque calibration method of the existing reducer test device is to directly measure the output end of the torque sensor. However, since the torque sensor is often not directly connected to the reducer under test, there is a transmission chain between the torque sensor and the reducer under test. , the calibration state is inconsistent with the use state, because the coaxiality error, deformation, friction and other influencing factors will cause the loss of torque in the transmission, and then cause the actual torque value acting on the reducer (the output torque of the reducer test device) and the torque There is a deviation in the reading value of the sensor, so the output torque of the reducer test device needs to be calibrated to solve the problem that the torque loss in the transmission chain cannot be calibrated and compensated

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