In-situ calibrating device with loaded direct-current torque motor and loaded driving ball screw assembly

Abstract

The invention belongs to the field of engine tests, discloses mechanical subsystems of in-situ calibrating systems, and relates to an in-situ calibrating device with a loaded direct-current torque motor and a loaded driving ball screw assembly. The in-situ calibrating device comprises the direct-current torque motor, the high-precision ball screw assembly, a high-precision encoder, a linear displacement sensor, a force transfer frame, a standard force sensor, a working force sensor, force transfer balls, force transfer ball sockets, a thrust frame, a force bearing frame, a motor base, a base, tapered roller bearings, a linear bearing, an electromagnetic clutch, double worm gear reducers, a hand wheel, an electric limit switch, a limit pressure plate and the like. The in-situ calibrating device has the advantages that an in-situ calibrating system comprises the in-situ calibrating device, a control subsystem of the in-situ calibrating system and a software subsystem of the in-situ calibrating system, an electric servo automatic control mechanical device loading method is implemented, accordingly, the in-situ calibrating device is high in in-situ calibrating loading force precision, is high in stability, good in safety and applicable to small-tonnage force and has an overload protection function, calibrating procedures can be automated, and manual loading modes are taken into consideration.

Description

technical field [0001] The invention belongs to the field of engine testing, is a mechanical sub-system of an in-situ calibration system, and relates to an in-situ calibration device for driving a ball screw pair loaded by a DC torque motor. Background technique [0002] Before the engine thrust test, it is an indispensable work to calibrate and check the working force sensor, which directly affects the reliability of the test process and the accuracy of the test data. At present, the static calibration and verification of the working force sensor on-line to simulate the actual working conditions, that is, the in-situ calibration method, has been adopted by the engine research and development departments and production units, which greatly improves the reliability of the data. In situ calibration loading is achieved by precisely controlling the displacement on the structure. At present, there is an in-situ calibration method that uses electro-hydraulic servo to control the ...

AI Technical Summary

Problems solved by technology

At present, there is an in-situ calibration method that uses electro-hydraulic servo to control the loading of hydraulic cylinders. The method of hydraulic cylinder loading can achieve large tonnage, but the pressure fluctuation of the hydraulic system will cause slightly poor force value accuracy and stability, and the noise of the oil source is large, which is easy Oil leakage will cause environmental oil and noise pollution, and has the disadvantage of fire hazard

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