Product Overview:
Automated optical inspection (AOI) and automated X-ray inspection (AXI) have been around for some time in various configurations and both have played a role in improving the quality of circuit boards. While some companies opt for one technology over the other, each form of inspection contributes its own unique benefit to the manufacturing process.
As board densities increase and component sizes decrease, the need for a fast, accurate, and more efficient inspection process is critical. A growing number of electronics assemblers have integrated AOI and AXI into their quality-control inspection processes.
Opting for both types of inspection can provide even greater benefits and return on investment as has been found by Biamp Systems, an international provider of professional installed audio electronics. The company, headquartered in Beaverton, OR, with additional engineering operations in Brisbane, Australia, delivers high-quality and innovative professional electronic products designed to meet the audio requirements of corporate boardrooms, theater complexes, courtrooms, public venues, and other installed audio applications.
In March 2005, Biamp was looking for ways to make the inspection process on a surface-mount line more efficient. Several inspectors would visually check the circuit boards with the aid of template overlays and paper documentation, such as drawings and the bill of materials. Visual inspection consumed a good part of the operators’ time, and in many cases, there was a lag between the time boards were processed and inspected.
When comparing the speed, efficiency, and flexibility of other test and inspection methods, the benefits of AOI were clear. A typical manufacturing line, for example, may have two to four inspectors to visually identify and repair component and solder defects. By contrast, an AOI system requires only one operator to detect and repair defects as well as collect all necessary data for yield improvements. This can reduce the per-shift requirement for labor or enable reallocation of resources to another part of the manufacturing process.
Biamp purchased an AOI machine to better utilize operator time and automate quality data collection. Ease of use is one important but often overlooked factor to consider when implementing AOI. For dedicated higher volume production lines, some systems are better suited than others, which often are programming-intensive and do not lend themselves to line changeover.
Other types of systems are designed to provide the flexibility needed to match production throughput on multiple line configurations. Biamp was looking for something simple to program, easy to operate, and available at a competitive price. The company selected the YESTech YTV-2050 AOI machine.
The YTV-2050 is a high-speed, high-defect coverage AOI system. Image processing technology integrates several techniques including color, normalized correlation, and rule-based algorithms to provide inspection coverage with a low false failure rate. It uses Thin Camera™ technology and has up to four top-down viewing cameras and four side-viewing cameras to inspect solder joints and verify correct part assembly.
Technicians typically take less than 45 minutes to create a complete program including solder inspection. A standard package library simplifies training and ensures program portability across manufacturing lines. Off-line programming maximizes machine utilization, and real-time statistical process control monitoring provides a valuable yield enhancement solution.
With Biamp’s commitment to comply with the European restriction of hazardous substances (RoHS) initiative in 2006, the company added a second surface-mount line along with a newly released YESTech F1S AOI machine. The new platform could better accommodate Biamp’s higher speed line with faster inspection time, more accurate motion control, and LED lighting. The system’s four oblique viewing cameras offered inspection capabilities for R-nets and other difficult-to-inspect parts.
Product Features:
• Capture on the fly technology
• 3D Fusion Lighting (RGB+White LED's)
• 5 megapixel color imaging
• 2 top-down and 4 side angle cameras
• Quick set-up
• High speed, high defect coverage
• Low false failure rate
• Programmable conveyor for boards up to 20 x 22
• Equally effective for paste, pre / post-reflow and final assembly inspection
• Off-line programming maximizes machine utilization and real-time SPC monitoring provides a valuable yield enhancement solution
General:
Manufacturer: Yield Enhancement Solutions
Model Name: Aoi System
Model Number/MPN: YTV2050
Inventory Number: 0221-163-0002
Series: V20411100
Make Year: 2004
Condition: Used
Specifications:
Aisle: 09A
Bay: 2500
Weight (lb): 2375 lbs.