Automatic torque applying calibrating apparatus for torque spanner

Abstract

The invention discloses an automatic torque applying calibrating apparatus for a torque spanner. The automatic torque applying calibrating apparatus is formed by a servo motor, a speed reduction mechanism, flexible couplers, connectors, a torque sensor, radial support mechanisms, a check arm mechanism, a machine body guide rail and a measuring control system, wherein the torque sensor is arranged between the two radial support mechanisms; one end of the torque sensor is connected with one flexible coupler by one connector while the other end is connected with a square tenon of the calibrated torque spanner by the other flexible coupler and the other connector; the connector connected with the square tenon of the calibrated torque spanner is kept horizontal under the common action of the radial support mechanisms and the flexible coupler, so the gravity center of the torque spanner is kept vertical and downward. Influence to the toque sensor and the torque spanner caused by poor component generated in the calibration process is avoided, influence to an indication value of the torque sensor caused by the self weight of the torque spanner is eliminated, the torque applying is automatically performed, the torque applying speed is accurately controlled, the accuracy of the calibrating apparatus for the torque spanner is improved, the calibrating accuracy of the indication value of the torque spanner is improved, the labor intensity is reduced, and the calibration efficiency is improved.

Description

technical field [0001] The invention belongs to the field of measurement and detection, and more specifically relates to an automatic torque wrench verification instrument, which can accurately verify high-accuracy torque wrenches. Background technique [0002] The torque wrench calibrator is an instrument for calibrating (calibrating) all kinds of manual torque wrenches, and it has been widely used at home and abroad. The country issued the JJG797-2013 "Torque Wrench Calibration Instrument" verification regulations in April 2013. Its main technical changes include a new standard torque wrench verification method, which is used to verify the 0.3 and 0.5 torque wrench calibrator. [0003] It can be seen that the country has realized that there are certain problems in the accuracy of the existing verification devices. The traditional torque wrench calibrator has its own errors, and errors will occur during the torque wrench verification process, and the results obtained are f...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patents cannot achieve the effect of only receiving pure torque in practical applications, because the torque wrench has a horizontal and horizontal structure, and the self-weight of the torque wrench will affect the value of the torque sensor during the verification process. The body cannot be offset, and it will have a great impact on the results. This impact not only affects the accuracy of the torque wrench indication test, but also is particularly fatal for the qualified judgment of the high-accuracy torque wrench calibrator.

[0006] In addition, the existing torque wrench testers are all manual structures, and the twisting speed cannot be accurately controlled, resulting in large indication errors and repeatability. At the same time, automatic control is not possible, resulting in high labor intensity and low efficiency.

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