Q4 Laser Scanner for 2D and 3D Measurements
Areas of Application and Use
The Q4 laser scanners stand out due to their flexible housing design, available in various large and small form factors. This versatility allows them to be used in a wide range of industrial environments. Highly resistant to ambient light, the Q4 laser scanners are ideal for applications in high-temperature conditions, such as those found on glowing metal. They are frequently used for weld seam guidance and inspection, where precision and reliability are critical.
The Measurement Principle of Laser Triangulation is an optimal Method for automatic, non-contact Measurement of:
- Free Shape Comparison
- Profile
- Width
- Height
- Depth
- Edge
- Groove
- Channel
- Bead
- Angle
- Roundness
- Presence
- Planarity
- Deformation
- Flushness
- Volume
- Position
- Completeness
- Track Accuracy
- Doubling
- Planarity
Advantages of Q4 Laser Scanners
The Q4 laser scanners offer numerous advantages due to their compact design and small form factors:
The Q4 laser scanners stand out for their high integration capability, especially in harsh environments such as welding applications. Thanks to specialized optics, they generate very thin laser lines for precise measurements.
They provide a broad spectrum of laser wavelengths, including blue (405/450 nm) and red (658 nm).The measurement ranges cover both small and large applications: The X measurement range extends from 4.5 to 650 mm, while the Z measurement range (height) spans from 5.9 to 1000 mm.
The Q4 laser scanners are highly versatile and ideally suited for demanding environments.
These Features make the Q4 Laser Scanner Product Line particularly versatile and powerful
- Optimal adaptation to the surface of a measurement object through a wide selection of power classes and wavelengths, ranging from 1 mW to 1400 mW.
- Automatic exposure time adjustment: The fully automatic exposure algorithm optimally adapts to the surface of the measurement object.
- Precision with numerical resolution up to 0.8 µm.
- Highly precise individual calibration of the scanner directly from the factory.
- Compact design with very small housing form factors, down to the size of a business card.
- Robust housing and protective circuitry: Integrated over-temperature protection for the laser.
- Protection of laser optics from dirt and fumes in harsh environments with replaceable protective windows.
- Ethernet interface for reliable data transmission.
- High resistance to vibrations and shocks.
- Support for high-temperature applications (glowing materials) with optional air or water cooling.
- Multi-scanner operation: Master-slave configuration for synchronizing multiple scanners.
- Integrated encoder input for HTL signals.
- Specialized path guidance software for welding applications.
Frequently Asked Questions
By measuring the laser profiles against a tolerance band. Any deviations that exceed or fall below the tolerance band are recorded as “errors.”
In principle, unlimited, as it is possible to arrange several 3D laser scanners side by side in parallel to achieve large measurement widths with high resolution. Individual 3D laser scanners can measure up to 1.5 meters in width. The best resolutions, meaning the smallest distance between two adjacent pixels, are 0.5 µm in the z-axis and about 5 µm in the x-axis.
QuellTech’s 3D laser scanners can be made very robust and immune to ambient light, depending on the model. This is especially important in environments involving welding processes. For high heat exposure, QuellTech offers water/air coolers as laser scanner accessories. Vibrations can be compensated for by special methods. Dust and moisture are managed with IP 67 enclosures.
Not necessarily, but in some cases, it may be advisable. For example, in high ambient temperatures, such as those created when measuring glowing steel, both the cable routing and sensors must be positioned in a cooled enclosure. In very dusty environments, an enclosure with windows for the optical path and a slight overpressure of clean air can be used to prevent contamination.
In production processes where the measurement objects are transported on a conveyor belt or roller conveyor, the 3D laser scanners can be mounted in fixed positions, such as above the conveyor belt, to continuously measure the objects as they pass through.
A design-in process is carried out for this purpose. QuellTech evaluates the exact requirements and the available space within the machine. If necessary, adjustments are made to the sensor shape. After thorough testing of the software and its interaction with other systems of the production plant, the sensors can be installed in series once approved by the customer.
Typically, we can implement our projects remotely. For very complex commissioning, we are available on-site at any time. Further adjustments after project implementation can also be made remotely.
Our laser scanner generates a point cloud with several million measurement points, from which the flatness can be calculated directly.
By capturing several million measurement points and using proven specialized algorithms, deflection and torsion can be calculated precisely.
Our laser sensors can be equipped with high-power lasers in complementary wavelengths, such as blue (450 nm). This blocks the red or yellow emitted light from the object, allowing only the reflected blue laser light to be used for measurement, ensuring a stable measurement result.
By arranging sensors directly opposite each other on the surfaces, the thickness of a moving metal strip or body can be measured precisely. Vibrations that may occur are compensated for by this differential measurement method.
The laser sensor’s profile is projected onto both legs of the angle, and the angle is calculated from the reflected light using a specific angle algorithm.
Before the welding process, a laser scanner detects the position and gap width of the welding seam and transmits the correct position to the axis control of the welding system. The system then adjusts the welding torch to the correct position during the welding process.
A laser scanner is integrated directly after the welding process and follows the system. This sensor measures the weld seam geometry and issues an alarm in the event of welding errors, which can immediately stop the welding process. This enables the operator to correct the error early and prevent scrap.
During metal processing, burrs are created on edges that need to be rounded. To ensure that the rounding does not fall below or exceed specific radii, a laser scanner is used to measure the edge radius profile by profile using a circle-fitting method.
Can we help you with your Measurement Task?
We are happy to conduct an initial free test measurement for you, provide a feasibility assessment, and support you both technically and commercially in the next steps.
Let us advise you!
By submitting the contact form, you agree that your data will be used to process your request (further information and instructions on withdrawal can be found in the privacy policy).
Technical Contact
Your technically competent contact, Stefan Ringwald, will be happy to help you.
Understanding your Challenge
Our aim is to fully understand your specific technical requirements for your current measurement task.
Well-founded Solution Proposal
Thanks to many years of experience with complex tasks in the field of 3D laser measurement, you will receive well-founded solution proposals from us.
