Robot-assisted testing of printed circuit boards
Human lives depend on the reliable functioning of electronic assistance systems.This has led one renowned automotive supplier to install a state-of-the-art, ultra-flexible inspection system for the 100% testing of PCBs destined for use in sensitive electronics applications. The system is even able to perform high-temperature tests at 140°C.
Electronic components and systems in motor vehicles are exposed to extreme temperatures. In order to ensure the proper functioning of components, these environmental conditions must be replicated in various test procedures. Early on, Amberg-based automation specialist Baumann GmbH focused on the design and construction of test systems for this purpose.
Baumann generally prefers to rely on the highly modular standard cells it develops in house. This was the case when the supplier received an enquiry from a multinational Tier 1 manufacturer about a fully automated line for circuit board testing at room temperature and above. Baumann’s engineers came up with an individualized standard solution.
Impressive plant technology with many sophisticated features
They chose the te|box, a flexible standardized platform for PCB test applications on either side of room temperature, i.e. from a low of -40°C to a high of +140°C. Thanks to exceptionally flexible features and design, this multipurpose system is able to test PCBs of widely varying types. In this specific case, 100% room temperature and high temperature tests must be conducted under rigorous cycle time criteria.
Just how flexible the setup is in practice is impressively demonstrated by the customer-specific test line. The complete system consists of two fully automated test cells on either side of an oven, each equipped with the ESD (electrostatic discharge) version of the Stäubli TX90L six-axis robot. In the first cell, the PCBs are tested at room temperature. The high-temperature tests (140°C) take place in the second cell.
This system’s sophisticated features are what make it so powerful. These include the ability to: