Engraving
depth of vehicle identification numbers
M2D Laser scanner
- measuring in production process |
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The
M2D is the perfect tool for identification and automatic control of surfaces
and profiles. Large-scale production without defective goods is only possible
if each part is checked.
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| Detection
of surface |
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Vehicle
identification numbers are engraved at load-bearing
metals parts of the chassis during manufacturing process . For receiving a good readability, a minimum of engraving
depth must be observed. On the other hand, the engraving depth may not
exceed a given dimension, not to weaken the strength of the chassis. The
vehicle manufacturer required an automatic control of the engraving depth.
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| Task |
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After
engraving, during transport to next processing station, the serial number
is read out. At first, the read data must be verified, i. e. the
number is read by OCR software and aligned with the main computer.
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| Solution |
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Scanning
of the serial number:
A M2D laser scanner is positioned quite close to that
point, where the serial number is located. While continuing the transport
of the vehicle, the laser scanner is generating a range of cross-section
profiles.
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Serial
number to be passed on:
The cross-section profiles are converted to a Bitmap file or a JPEG file
and passed on to a standard image processing software.
Result after filtering of the software
OCR identification and automatically analysis
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| Result |
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The
analysing software of the laser scanner is calculating from the recorded
cross-section profiles the medium, maximum and minimum engraving depth.
These values are transferred to the main computer (or to PLC).
If the engraving depth is deficient, the vehicle is discharged for repair.
The evaluation of the serial number and the comparison with the main computer
is executed by a standalone software packet. Both tasks are processed
in parallel.
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No matter whether
measuring during CNC manufacturing, verifying parts or door gap measuring
- the software is analysing; tendential deviations are recognized and
online fed into the control system of the machine. QA protocols are displayed.
For over 20 years, MEL is the most innovative producer
of intelligent sensors. Worldwide there are several thousand laser scanners
in operation. Take advantage of our experience.
We solve problems of measurement and sensor technology. Therefore, we
build hard- and software as turnkey solution.
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