Full-automatic high-precision extensometer calibration instrument

Abstract

According to the full-automatic high-precision extensometer calibration instrument. Motor guide plates are arranged at the upper end of a motor axial guide base, deep groove ball bearings moving in kidney-shaped through grooves are arranged in the kidney-shaped through grooves, a balance rod penetrates through deep groove ball bearing holes, and the lower end of a motor connecting flange is connected with a closed-loop stepping motor; the upper end of the motor connecting flange is connected with an indexing shaft guide rod, the periphery of the indexing shaft guide rod is sleeved with a stroke guide sleeve, a guide rod flange is connected between the indexing shaft guide rod and the stroke guide sleeve, an extensometer clamping moving guide rod connected with the indexing shaft guide rodis inserted into the stroke guide sleeve, and a main support auxiliary stand column is connected to the upper end of a main support stand column. A centering rod is arranged at the upper end of the extensometer clamping and moving guide rod. The full-automatic high-precision extensometer calibration instrument further comprises a grating ten thousandth meter and a thermal printer. The closed-loopstepping motor with a high-precision photoelectric encoder is used as a power and measurement core part, so that the displacement variation of the extensometer can be accurately detected, and the resolution can reach 0.1 micron.

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...

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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

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