Automotive Success story

The modern way of testing printed circuit boards (PCBs)

Customer benefits:
  • Exceptional level of flexibility
  • High output
  • Simultaneous testing of different types of PCB
  • Reliable protection from electrostatic discharge
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The ESD version of the Stäubli TX90L for handling printed circuit boards.
Stäubli AG - test-cell-baumann-tim-2x-68156-jpg-orig.jpg
The six-axis robot impresses in the test cell by virtue of its high dynamics and exemplary precision.
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The complete test line consists of two linked test cells with docked test stations. The oven for heating the circuit boards is shown in the center of the photo.

TASK

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.

 

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:

  • Retool without any interruption to cycle times
  • Perform high-temperature tests with minimal energy consumption
  • Vary the number of test stations
  • Reliably eliminate electrostatic discharge
  • Test two different types of PCB at the same time.

 

CUSTOMER USAGE

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