Universal caliper automatic calibrating device

Abstract

The invention belongs to the technical field of metering testing, and particularly relates to a universal caliper automatic calibrating device which comprises a caliper clamping and positioning mechanism, a caliper clamping and dragging mechanism, a gauge block tray, a gauge block sliding groove, a double-guide-rail gantry type movement mechanism, a gauge block grabbing mechanism and a machine vision system. The universal caliper automatic calibrating device provided by the invention adopts a standard size traceability method based on the combination of the gauge block and the grating sensor,strictly meets the requirements of calibration regulations, and takes three-level or five-level special gauge blocks as standard sizes when calibrating indication errors and parallelism of measuring jaws in a knife edge. A standard size can be provided by a high-precision grating sensor when an additional test size cannot be formed by gauge block combination. The method not only enriches the number of detected points, but also avoids the tedious operation of manually combining the gauge blocks, and enables the precision of the size standard measurement value to be higher.

Description

technical field [0001] The invention belongs to the technical field of measurement and testing, and in particular relates to an automatic verification device for a universal caliper. Background technique [0002] Universal calipers are easy to operate and have high precision, and are widely used in the machinery industry. Since the measurement of the universal caliper itself does not conform to the Abbe principle, the machining error and assembly error of the parts during the manufacture of the caliper, as well as the wear or even damage of the measuring surface during the use of the caliper, will cause the measurement error of the universal caliper and directly affect the machine. Product detection accuracy. Therefore, it is necessary to calibrate the universal caliper before and during use to ensure the measurement accuracy of the caliper. [0003] At present, the verification of universal calipers is mainly done manually, but the traditional manual visual verification n...

AI Technical Summary

Problems solved by technology

[0003] At present, the verification of general-purpose calipers is mainly done manually, but the traditional manual visual verification not only has a large workload, requires high technical experience for the verification personnel, but also has low verification efficiency.

The verification process is greatly affected by human subjective factors, resulting in low verification accuracy and poor reliability

At the same time, the verification data are all manually recorded and processed, lack of digital management means, and the data utilization rate is low

The verification period is fixed, and the verification results can only reflect the qualification of the caliper afterwards, which leads to the disconnection between measurement and production, and cannot provide timely and accurate feedback on the status of the calipers being used at the processing site, and the effectiveness of the verification work is poor.

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