Issue link: https://iconnect007.uberflip.com/i/1047182
88 SMT007 MAGAZINE I NOVEMBER 2018 In the final step, the test parameters are adapted to the actual process variations as the test program is executed. To avoid slippage, tolerance limits are set close to either side of the measured values and are corrected accord- ing to the actual variations—considering plau- sibility criteria. This is based on an intelligent algorithm, which can be compared to artificial intelligence (AI)—a comparison that should be avoided at this point due to overuse and the ambiguous definition of the term. Because the automatic creation of test programs only requires insertion and Gerber data and data, even users without any knowledge of the components can carry out the programming. Two months after MagicClick was intro- duced at SK-Tronic, more than 1,300 package shapes had already been added to the compo- nent library. "We get more 'green ticks' every week, which means we have more known components and there are fewer for us to add," explains Barth. MagicClick also learns over time that the more often a recurring proj- ect is run, the better optimized the adjustment of the parameters. Since the introduction of MagicClick, SK-Tronic has identified signifi- cant changes. "3D AOI and the automatic creation of test programs have enabled us to more than halve pseudo faults," says Barth. 3D AOI signifi- cantly simplifies manual classifica- tion of the inspection in the event of a fault. It is barely worth even glancing at the actual component because evaluation is made signifi- cantly easier thanks to the variety of 3D display options, such as the coloured TopoColor error images. Increased Efficiency Guaranteed For EMS providers with a wide variety of products, AOI inspection is a time-consuming part of every- day business. However, by using automated test program creation with MagicClick, time savings of up to 80% can be achieved on creation and optimization. The result is effi- cient AOI use, even with the small- est batch sizes. What's more, you get a return on investment for an AOI system in a short span of time. It's clear the investment has paid off for SK-Tronic, according to Barth. "We have been able to cut the time needed to create a test program to a third. We were able to reduce pseudo faults verifiably, and test times were greatly reduced," he adds. Now, AOI is used at SK-Tronic for production volumes of 30 assemblies or more—a substan- tial improvement compared with the past. The total throughput of manufactured and tested assemblies even increased by 300% over a 10-year period. Ultimately, the customer bene- fits as efficient use of AOI is also reflected in the final price and delivery quality. SMT007 Matthias Müller is a public relations manager at Goepel electronic GmbH. Jens Kokott is the AOI product manager at Goepel electronic GmbH. Figure 6: Fault statistics and test program generation on the system.