Automatic cleaning method of tin-zinc bronze conductive hair wire

Abstract

The invention relates to an automatic cleaning method of a zinc tin bronze electric conductive hair spring. The automatic cleaning method comprises the following steps: firstly, welding one end of the hair spring with an insulator on the front side of a protective filament plate, and suspending the other end of the hair spring; secondly, mounting a special tool on the protective filament plate, and then causing the back side of the protective filament plate on which the special tool is mounted to be upwardly mounted in a tool basket; thirdly, downwardly placing the hair spring in the tool basket and the protective filament plate at a feed inlet of a six-tank type ultrasonic fully-automatic cleaning machine; and fourthly, starting the cleaning machine, carrying out six-tank multi-frequencycleaning by utilizing a manipulator carrying the tool basket, and then obtaining the hair spring after the cleaning. According to the material, the shape and the radius R of the electric conducting hair spring, the invention can select optimal ultrasonic frequency to be matched with ultrasonic cleaning power and control cleaning technological parameters by rationally programming the cleaning procures, the cleaning time, and the like, thereby obtaining an optimal cleaning effect. Due to the improvement of the cleanliness of the hair spring, the reliability of a gyroscopic apparatus is also stably improved.

Description

Technical field [0001] This intellectual achievement belongs to the precision assembly and cleaning technology in the field of inertial instruments. Background technique [0002] The power transmission wires of liquid float gyroscopes require as little impact on the float as possible, and their acting torque is less than or equal to 1mg·cm, so the requirements for welding, shape and cleaning are very high. Tin-zinc bronze or beryllium bronze is a hairspring material commonly used in inertial instruments to connect the internal float of the gyroscope to transmit electrical signals. Its material has a small elastic modulus. The conductive hairspring made from it is a soft thin ribbon, which is shaped by vacuum and high temperature. Later, the shape is semicircular, the thickness is about 1 / 1000 of its radius R, and the width is about 1 / 45 of its radius R. [0003] The original cleaning process of the conductive hairspring and the wire guard of the liquid floating gyroscope is manua...

AI Technical Summary

Problems solved by technology

[0004] The conductive hairspring cleaning process has also been tried using a small desktop ultrasonic cleaning machine. The cleaning process: pour petroleum ether into the small desktop ultrasonic cleaning machine, and directly put the wire guard assembly (including the hairspring) into the bottom of the cleaning machine tank (ultrasonic frequency It is 40kHz, the cleaning liquid cannot be circulated, and there is no automatic filtering device), cover the lid, press the switch, clean (5-10) min, and then turn off the power. The shape of the zinc bronze conductive hairspring is severely deformed after cleaning, showing an irregular semicircle, so the cleaning process of the tin-zinc bronze conductive hairspring by the original small desktop ultrasonic cleaning machine is not ideal

Moreover, because the original ultrasonic cleaning process is that the wire guard and the hairspring are placed directly on the bottom of the cleaning tank, the hairspring naturally hangs down on the wire guard, the cleaning liquid cannot be circulated, and there is no filtering device. Tiny particles may fall in the wire guard groove or other positions, resulting in secondary pollution of the hairspring

[0005] In short, the original process is very difficult to manually clean the surface of the hairspring with extremely small particles, and it is easy to damage the hairspring or cause the hairspring to deform.

The hairspring deformation has an important impact on the constant value drift of the gyroscope, and the cleaning of the hairspring surface is not clean, which will also affect the performance and quality of the gyroscope.

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