A fully automatic high-precision extensometer calibration instrument

Abstract

The invention relates to a fully automatic high-precision extensometer calibration instrument. The upper end of the motor axial guide base is provided with a motor guide plate, and deep groove ball bearings moving along the waist-shaped through groove are arranged in the waist-shaped through groove. There is a balance rod passing through the ball bearing hole, a closed-loop stepping motor is connected to the lower end of the motor connecting flange, and an indexing shaft guide rod is connected to the upper end of the motor connecting flange, and a stroke guide sleeve is sleeved on the outer circumference of the indexing shaft guide rod , There is a guide rod flange connected between the indexing shaft guide rod and the stroke guide sleeve, the travel guide sleeve is plugged with an extensometer connected to the index shaft guide rod to clamp the moving guide rod, and the upper end of the main bracket column is connected to the main bracket The auxiliary column, the upper end of the extensometer clamping mobile guide rod is provided with a centering rod, and the automatic high-precision extensometer calibration instrument also includes a grating multimeter and a thermal printer. By using a closed-loop stepper motor with a high-precision photoelectric encoder as the core component of power and measurement, it can accurately detect the displacement change of the extensometer, and the resolution can reach 0.1um.

Description

technical field [0001] The invention is a fully automatic high-precision extensometer calibration instrument, which is mainly used for calibration of displacement code values ​​of various extensometers, and can also be widely used in the verification of displacement sensors and the high-precision verification of corresponding dial gauges and dial gauges. Background technique [0002] The current mainstream extensometer calibration instrument in the market is a purely mechanical structure, the accuracy is usually about 0.2um, the accuracy is obviously low, and it can no longer meet the higher accuracy requirements of customers. Moreover, the purely mechanical structure requires manual operation, which is easily affected by operator misoperation and environmental vibration, which in turn leads to large deviations in calibration results. In addition, manual transcription of calibration results is required, resulting in low calibration efficiency. In addition, the purely mechan...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low precision, slow calibration efficiency, error-prone results, and easy damage to equipment and extensometers of traditional extensometer calibration instruments, the present invention provides a fully automatic, high calibration accuracy, fast calibration speed, safety, and calibration results. Accurate high precision extensometer calibrator

Images