What is the application of inertial sensor assembly line manufacturing?

What is an inertial sensor?

In the air, pilots cannot rely on vision and perception to distinguish horizontal directions, but rely on flight instruments. According to (FAA) research, the human orientation system is complex and performs extremely well on the ground. Once in the air, the human body is in an unfamiliar three-dimensional environment. In addition, the lack of visual orientation reference makes it difficult or impossible. Possibility to manage spatial (distance) orientation. At this time, human beings are susceptible to spatial disorientation and must rely on external help to achieve good positioning. Inertial sensors provide us with a solution.

How are inertial sensors produced?

In order to ensure the reliability of the inertial sensor, its production process is very important. The assembly accuracy and assembly conditions will affect the overall characteristics of the sensor. Once assembly error occurs, the inertial signal transmission error may affect the aircraft route. In combat situations More likely to lead to the defeat of the entire battle. Although the intelligent assembly of miniature precision sensors has been studied in China in recent years, the production and assembly of inertial sensors are currently operated manually. Due to the small size of product parts and high precision requirements, manual operations need to be performed under a magnifying glass. The consistency is poor, and the quality of personnel is very high. In this regard, the precision assembly technology is only the Beiganglian company that has been researching for several years.

Figure 1 Schematic diagram of inertial sensor

What can the inertial sensor intelligent assembly line do?

The intelligent assembly line of inertial sensors can realize the automatic conveying, automatic dispensing, automatic coaxial assembly, automatic bonding and other processes of various parts, which improves the accuracy, efficiency and product consistency of parts assembly. There are 3 kinds of incoming materials for this line:

    1. Part 1, diameter 9.4mm, thickness 0.8mm;

    2. Part 2, diameter 9.4mm, thickness 4mm, with pre-assembled ring;

    3. Part 3, diameter 22mm, thickness 7.6mm (can be customized according to different models).

*In order to protect military secrets, all parts are indicated by code names

The line mainly consists of parts 1/2/3 conveyor, parts 1/2/3 conveyor, finished product conveyor, finished product tray, vision system 1/2/3, dispenser A/B, 6-axis robot A/ B. The assembly platform and control system are composed of inertial sensor automatic gluing assembly processes such as automatic positioning and grasping of parts, automatic dispensing assembly, and finished product blanking and pressing.

How to ensure the accuracy of assembly?

Vacuum chuck realizes the feasibility of assembling fragile and small-size parts.

The minimum size of the parts to be assembled for the inertial sensor is Φ9.4mm in diameter and 0.8m in thickness. Conventional manipulators cannot carry out the grasping operation, and the grasping process is easy to cause damage to the parts; in addition, the parts to be assembled cannot use magnetism due to their product characteristics. Operate by suction. The line uses a small vacuum suction cup with a suction head diameter of Φ5mm, which can smoothly suck and transfer the parts, and will not cause damage to the parts in the process.

Customized gripper to realize automatic distributed dispensing.

During manual dispensing, due to the uncertainty of the manual, the dispensing position and the dispensing volume cannot be well guaranteed, and the center and outer ring of the part are dispensed with two different components of glue, which is very easy to cause gel. Mixed. The 6-axis dispensing robot uses a customized gripper developed by Beiganglian, with a rotary indexing, which can automatically rotate according to the preset number and position and cooperate with the dispensing machine to realize distributed dispensing, with an indexing accuracy of 5′ , The accuracy of the glue volume reaches 2μL.

Cone structure, to achieve high coaxial assembly parts.

During manual assembly, magnification through a magnifying glass, visual identification + auxiliary tools to control assembly coaxiality, takes a long time, and has poor product accuracy and repeatability. The newly developed assembly platform of the production line is equipped with tapered assembly tooling. Through the tapered structure and the taper of the robot, it can achieve the high precision requirement of 0.03mm coaxiality, high accuracy and repeatability, and significantly improve its assembly efficiency.

Before the inertial sensor assembly line landed, the manual operation output was 2000 pieces (8 hours), and 10 skilled operators were required. Through the cooperation of the robot and the vision system, the PLC system controls the orderly operation of various equipment. The production line after the transformation has a daily output of 3,000 pieces, without the need for personnel to participate in the production, which has achieved substantial savings in personnel. At present, my country is paying more and more attention to the aviation industry, and the aviation industry is developing rapidly. The intelligent assembly system based on industrial robots will greatly shorten the production cycle of products and effectively promote the rapid development of national defense and military industry.

This article is from Allicdata Electronics Limited which offer electronic components, semiconductors, antennas, capacitors, connectors, diodes, transistors, IC,resistors. For more product information, please go to the website to get it.