Text/Liaoning Best Technology Co., Ltd.
Yanfeng Johnson Controls Automotive Parts Co., Ltd. (hereinafter referred to as Yanfeng Johnson) is one of the largest suppliers of automotive seats and fining systems in China. The company's business covers seat assemblies, mechanical parts, interior trims and metal parts for customers. Zero-distance instant delivery and service.
The lock is one of the main products of Yanfeng Johnson. Its production is automated assembly. It requires strict inspection of the assembly of the two bolts, screws, springs, screws, screws, springs and other seven parts of the workpiece, the accuracy deviation is only 0.1mm, the production test beats stable in 0.2s, stability to reach 99.99%, testing requirements are very demanding.
Liaoning Best Technology Co., Ltd. (hereinafter referred to as Best Company) is a testing equipment supplier of Yanfeng Johnson, providing product testing technology services. In the early detection of the project, Yan Feng Johnson believes that high-end smart cameras or PCs can meet the detection requirements more quickly.
“However, in the design, we found that due to the angle and the beat, a single camera does not fully meet the detection needs,†Best's engineers said, “This puts a lot of pressure on the customer's costs, the entire program for us to come It is a big challenge."
At this time, just as Cognex introduced the In-Sight 2000 series of vision sensors, the IS2000 not only has the powerful capabilities of the In-Sight vision system, but also has the advantages of the simplicity and cost-effectiveness of the vision sensor. The powerful features and high price/performance ratio immediately attracted the technical personnel of Yanfeng Johnson and Best.
Thus, Best Company proposed the concept of "camera door" and applied IS2000 for analysis in the test. Using Cognex positioning pattern tool for positioning, according to different detection requirements, using the presence/absence of the detection components, measurement tools, and mathematical logic tools to detect the assembly of various parts of the lock. In the mechanical solution, Cognex In-Sight 2000 can change the angle due to the narrow space, making the installation more convenient and beautiful. The test results are fully able to meet the requirements of testing and tempo, and the cost performance is extremely high, which has been highly recognized by both engineers.
After the completion of the commissioning, Wu workers of Best Company stated that “Cognex’s high performance-price ratio product has always known Cognex brand. The success of this test made me more convinced of Cognex’s solution to the problem. We are also gratified to be able to eliminate concerns, improve production quality and reduce costs for our customers."
“There are many Cognex products on the production site. I used Cognex products when I first joined the company in 2014. After several years, Cognex's technology has become more and more mature.†Yan Feng, Jensen’s Zhou Gong Pointing to the scene, said, “This project also used a smart camera solution, but in comparison, this vision sensor is more economical and stable. I hope Cognex can develop better products to adapt to faster production. â€
This new vision sensor is suitable for simple error proofing applications. It is modular in design, equipped with mature In-Sight vision tools and field-replaceable lighting and optics. It is easy to set up, and it is a visual sensor with high value and ease of use. Sex and flexibility set new standards.
The In-Sight 2000 Series includes an integrated high-performance imaging system consisting of a field-replaceable lens and an LED ring light that provides uniform diffuse illumination across the entire image without the need for costly rework. External lighting device. Lenses and a variety of colored lights can be easily replaced as needed to meet the needs of the field application.
In this project, the assembly of the entire assembly is basically automated. Although the lock is a small part of the car, it protects the safety of the car. The detection process of the device is as follows: automatic assembly of the lock; after the assembly is completed, the camera door is detected in all directions; in order not to affect the detection effect of each part, a separate trigger mode is adopted, ie, the right camera in the work station is triggered first, waiting for the test result to pass. After that, the intermediate camera is triggered again, and so on; if one of the cameras detects a defective device, it directly flows into the next station and rejects, and the rest of the cameras do not trigger; when the entire testing device is completed, the workpiece is assembled for the next station. .
In this device, it must be mentioned that In-Sight 2000 series vision sensors can also be configured for series and right angle mounting. This modular body design provides great flexibility for installation in confined spaces, simplifies wiring or light paths, and reduces the need for designing new mechanical fixtures. Yan Feng's Zhou Gong also pointed out that "the design of this light source and vision system is integrated, which reduces the number of parts that are in error and makes it easier to find problems."
In the process of large-scale industrial production, visual inspection of product quality is not only inefficient but also has low precision. As Li Feng of Yan Feng’s equipment department said, “Cognex's visual inspection method has discovered many subtle product defects that cannot be discovered by human eyes, which also promotes the progress of our company's production process.â€
In the construction wave of Industry 4.0 and China Manufacturing 2025, Cognex, which has always focused on machine vision technology innovation, will provide more reliable and more efficient solutions for the development of Chinese industry. In the process of making Chinese “smart†creation in China, Cognex will certainly play a greater impetus.
Figure 1 live picture
Fig. 1 describes: The workstation detects whether the components of the lock are installed correctly, and the two sides are installed at parallel angles. The middle IS2000 is installed at right angles, which is beautiful and saves space. After the work piece is in place, it triggers the camera at the same time and makes rigorous tests to control the product quality.
Figure 2 Vehicle Lock Qualification Detection
Fig. 2 describes: This program uses Cognex positioning pattern tool for positioning. According to different detection requirements, the presence/absence of measurement components, measurement tools, and mathematical logic tools are used to stably detect the assembly condition of each part of the lock.
Fig. 3 Schematic diagram of unqualified lock detection
Figure 3 describes: This program uses the Cognex positioning tool to locate the pattern function. According to different detection requirements, it can stably detect that the assembly of the tongue lock, spring, screw, screw and other components is in a failed state.
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