NextSense - Calipri® Wheel-Wear Measurement System

NextSense develops, produces and markets mobile, laser-based profile measuring devices. A patented method allows, for the first time, the precise non-contact measuring of almost any profile, carried out by hand.

Handheld optoelectronic gauge

NextSense is producer of the non-contact, laser based wheel-wear measurement system the Calipri®-Wheel. This is a quick, simple and reliable system.

Calipri-Wheel is the first patented handheld optoelectronic gauge worldwide that records geometrical data of complex-shaped objects like train wheels whilst being held in one hand, not requiring any contact with the object. This innovative gauge allows you to measure lengths as well as other geometrical data, such as angles of radii – just like a vernier caliper, only much faster and more comfortably.

Wheel profile / wheel-wear measurement equipment

Calipri-Wheel was developed for wear inspection of railway wheel sets. It is designed for precise measurement of all safety relevant wear parameters such as flange height, flange thickness, flange slope (QR), dishing, wheel width and rim thickness (seam).

The non-contact solution Calipri-Wheel provides far better reproducibility of measurement values than conventional mechanical measurement systems – even in the restricted space of a service workshop under the vehicle.

Calipri-Wheel wheel-wear measurement equipment advantages

Measuring is easy: the user simply moves the Calipri-Wheel sensor along the railway wheel by hand. The intelligent measurement system, which is based on image processing techniques, continually records and subsequently combines the individual segments of the wheel profile.

Distance and angle of the sensor with respect to the measured object need not be kept exactly constant. Calipri®-Wheel supports the user during the measurement process by continually providing acoustic feedback on the correct positioning of the sensor relative to the wheel. Features of the Calipri®-Wheel include:

• Non-contact measuring
• Shortest-possible testing time
• Mobility and compactness
• Integrated data management
• Freehand guidance
• Highest process reliability

Once the entire wheel profile has been recorded, the data is evaluated and the measurement values are displayed – a complete measurement process takes no longer than 5s per wheel to accomplish. Classic measuring errors with gauges – resulting from tilted reading, undefined measuring force, lop-sided application, etc. – are impossible with this method. The measurement result is free from operator influence and thus objective and reproducible.

The measured data can be assigned to and grouped into customized meta data (e.g. number of axles and their location). The user is able to determine the whole workflow, or the process can be rendered completely independent or regulated automatically.

Calipri-Wheel is the only measurement system on the market that can measure the following six parameters in 5s without contact with the wheel:

• Flange height
• Flange thickness
• Flange slope
• Wheel width
• Wheel thickness
• Dishing

After the measurement process the results are immediately ready for data transfer, thus avoiding copying errors and delays.

For more information, please contact us at the address below.