Sensors & transducers
Micro-Epsilon allows quick and easy visualisation of the evaluated readings. Moreover, multiple interfaces can be used in order to integrate the scanner in common image processing environments.
Sheet edge measurement with laser welding
Automated robotic welding cells monitor the quality of pipes with longitudinal welding on the basis of several points. First, the edge position must be known along the sheet edge length while also ensuring the optimal alignment of the sheet edge. Laser scanners from Micro-Epsilon, which process several measurement programs in the integrated controller, are used for monitoring. The scanCONTROL SMART sensors do not require an additional controller, which considerably simplifies the installation procedure.
Measurement of cooling time in welding units
Documentation of welding parameters such as cooling time is achieved using high performance pyrometers from Micro-Epsilon. These short-wave temperature sensors enable precise measurements of metallic surfaces. The pyrometers are equipped with a double laser sighting in order to view the exact position of the measurement spot. The recording of the cooling time is performed between freely adjustable limit values. Depending on the pyrometer model, different measurement distances and measurement spot sizes are available.
Instrumentation Monthly February 2025
Weld seam tracking in pipeline inspection
For the maintenance of pipelines, inspection of the outer weld seam is a critical factor. For this reason, pipes are inspected in a test station under extreme climatic conditions. In order to automate the inspection process, the test facility is positioned precisely over the seam. The scanCONTROL laser scanner detects the position of the weld seam and outputs this to the control system which readjusts the test unit. The laser scanner automatically adapts the exposure time to surface changes (e.g. moisture, dirt or corrosion).
Colour sensors for presence check of weld seams
When welding gear parts, the weld seam is automatically inspected for quality assurance purposes. Here, CFO100 colour sensors from Micro-Epsilon are used, which detect the entire seam while the component is rotating. As the weld seam has a different colour than the surrounding materials, the presence of the seam can be reliably inspected. The multi-teach function enables teach-in of the colour shades of the weld seam. If there is no seam, a switching signal is output.
Diameter measurement of welding wires
In order to monitor the thickness of welding wires, optical micrometers from Micro-Epsilon are used. The X-Frame measuring system
continuously measures the diameter of the wire. Two laser micrometers detect the wire diameter with high resolution and measuring rate. The X-Frame configuration enables the measurement of different wire thicknesses, while digital interfaces transmit the measurement data to the control system.
Optical weld seam inspection using industrial endoscopes
Rigid and video endoscopes are ideal for the inspection of weld seams in difficult-to-access places. This inspection can be performed before, during and after the welding process. Parameters such as wear, cleanliness, shape and surface are examined visually. For automatic evaluation, the endoscopes can also be integrated in image processing solutions.
Colour sensors for automatic detection of weld spots
Brass strips are joined using the spot welding method. CFO colour sensors are used to automatically recognise the weld spots prior to further processing. The multi-teach function allows for the colour shades of the shiny weld spots to be taught-in to colour groups. When the sensor recognises a weld spot, an output signal is output to the control system in order to initiate further processing.
Micro-Epsilon
www.micro-epsilon.co.uk 49
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