A micro-glass tube automatic threading and centering device and method

Abstract

The invention belongs to the technical field of automatic assembly of precision micro parts, and relates to an automatic wire passing and aligning device and method for a micro glass tube. The deviceuses a technology of automatically wire passing and aligning for a micro-miniature accelerometer inertia pendulum part suspension wire and the glass tube. The middle part of the device is a glass tubeclamp installing and adjusting mechanism, a suspension wire aligning mechanism and a wire passing and aligning mechanism are arranged at the two sides of the glass tube clamp installing and adjustingmechanism respectively, a visual measurement module is at the rear side, the bottoms of the four parts are all installed on a platform, the wire passing and aligning mechanism and the visual measurement module are connected with a PC respectively, and therefore automatic control is realized. The device can realize the automatic wire passing and aligning function of the micro glass tube with visible assembly process and controllable passing wire tension.

Description

technical field [0001] The invention belongs to the technical field of automatic assembly of precision micro parts, and relates to a micro glass tube automatic wire threading and centering device and method, which is an automatic threading and centering method for hanging wires and glass tubes of micro small accelerometer inertial pendulum parts Technology. Background technique [0002] The inertial accelerometer is the inertial sensitive element of the navigation system, which is used to measure the acceleration of the vehicle. Suspended wire pendulum accelerometer is small in size, light in weight, large in measuring range, has high precision and can withstand large acceleration and impact. The accelerometer adopts a force-balanced structure. The pendulum assembly is a part of the sensitive accelerometer. The axis where the suspension wire passing through the pendulum assembly is the sensitive axis of the suspension wire accelerometer. The suspension wire that constitutes...

AI Technical Summary

Problems solved by technology

The current assembly method is mainly manual assembly using tools such as special fixtures and microscopes, such as the assembly of suspension wire and glass tube in Lu Yongle's paper "Principle and Key Technology Research of Small Suspension Pendulum Acceleration Sensor". The two glass tubes are clamped to the special tooling, and the suspension wire is manually inserted into the two glass tubes through microscope observation, and the method of centering the suspension wire in the glass tube is not mentioned.

Invention Patent No. 201110178911.X, Huang Wenbin invented a device for inserting platinum wire into a quartz tube. This device uses a pair of rolls to guide the platinum wire. This method will cause certain damage to the surface of the platinum wire, and there is no self-aligning positioning

Invention Patent No. 201410855198.1, Li Juan and others invented a micro-channel threading device that can achieve alignment and threading. The centering method is only to complete the alignment before threading, and the centering cannot be performed after threading is completed.

[0004] To sum up, it can be seen that the assembly accuracy of the existing assembly method depends on the worker's technical level, operating habits, work experience, etc., and the assembly accuracy is low and the scrap rate is high.

In view of the above problems, it is very difficult to improve the operation level of workers to achieve high assembly accuracy, the output-to-investment ratio is very small, and the degree of automation is low; the wire threading method has certain damage to the wire, and does not involve damage to the wire Automatic centering and tensioning

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