Coordinate Measuring Machine with Tomography Sensor (Fast Qualifier)
Multisensor coordinate measuring machine for 3D measurements with computed tomography (CT).
Rigid granite base with precision linear guideways and integrated rotary axis.
Fully protective lead shielding design according to German Radiation Protection Act.
Maintenance-free closed high-performance X-ray tube for fast measurement of dense materials and large workpieces.
Integrated shutter to avoid time-consuming switching on and off of the tube with extended service life.
High-end X-ray detector for high performance measurement with fast image acquisition in OnTheFly mode.
Workpiece feeding with robot through front door or upper loading opening.
High-performance PC for real-time reconstruction of workpiece geometries.
Integrated WinWerth® software solution with multi-PC network.
WinWerth® Scout – software module for graphical and tabular display of results. Also allows CT and multisensory coordinate measuring machines to be linked together.
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Ever since Werth presented the first X-ray tomography machine developed especially for coordinate measuring technology, with optional multisensor systems, the machines in the Werth TomoScope® series have enabled the complete, precise, and non-destructive measurement of workpieces. This technology minimizes first article inspection times for rapid product validation, thus reducing development costs. Special measurement methods also make it possible to monitor processes with high throughput due to short measurement times.
CMM technology inside.
CAA compensation.
Temperature compensation.
Pre-calibrated magnifications.
Fully-automatic measurement.
Local edge detection using subvoxeling algorithms (patent).
No manual influence on the measuring results.
Integrated artifact correction.
Accuracy around 2 µm − 20µm depending on component material and geometry.
X-ray images of the workpiece are taken at various rotated positions. With suitable mathematical methods, they can be used to calculate a complete, high-resolution volumetric model. A patented subvoxeling process determines the measurement points at the material boundaries.
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The 3D point cloud can be compared directly with the 3D CAD model, imported for example in IGES or STEP format. Each point is automatically associated with the corresponding patch in the CAD model. WinWerth® measuring software generates a color-coded deviation plot for each measurement point in comparison with the specified CAD surface.
The points associated with a geometrical feature are selected for analysis, either using automatic segmentation or simply by clicking on the CAD model (patent). WinWerth® calculates the corresponding standard geometrical features (line, cylinder, plane, etc.) and links them into dimensions, generating a measurement report on request. Using virtual planes, measurements can be performed in any cross section of the volume or point cloud (patent pending). Workpieces made of several different materials can be measured using this technique.
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The design principle of the CT machines, based on proven components from Werth coordinate measuring machines, ensures stability and precision. All TomoScope® and TomoCheck® machines meet the requirements to be considered cabinet X-ray systems.
The CT measurements can be traced back to the internationally recognized length standard of the German National Metrology Institute (PTB – Physikalisch-Technische Bundesanstalt), using calibrated standards in accordance with VDI 2617 or VDI 2630, with a DAkkS calibration certificate available on request. CT measurements, e.g., on plastics, can be performed with measurement errors of a few micrometers. If precision in the sub-micron range is required for workpieces that are difficult to penetrate radiographically, multisensor systems can help reduce systematic measurement errors due to artifacts, using patented Werth Autocorrection.
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Special measurement methods, such as OnTheFly CT, Eccentric CT (patent), Multi-ROI CT, Raster Tomography, and Dual-Spectra CT are available to increase the measuring speed or resolution, to expand the measurement range, and to measure workpieces made of multiple materials.
The measurement time for first article inspection of a workpiece has been reduced from several days, using classical measurement techniques, to a few minutes with CT. Product development can thereby be sped up significantly, which increases cost-effectiveness. With extensive and precise information about the workpiece, mold corrections can be implemented in a fraction of the time.
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The operation of machines with a wide variety of sensors, but also the evaluation of volume data and point clouds are possible with WinWerth® in a unique combination. The Werth image processing software is based on 40 years of experience and is the foundation of probably the most powerful image processing sensors for coordinate measuring machines currently available. Optical distance sensors, conventional styluses in single-point or scanning mode, the Werth Fiber Probe®, X-ray computed tomography or machines with a combination of several sensors are all supported by the uniform concept. Measurement points, 2D images or volume data can also be conveniently evaluated in terms of geometrical characteristics or with part-to-part deviation analysis. PTB-certified evaluation algorithms ensure correct measurement results. All desired information is displayed in the graphic: CAD models with PMI data, voxel volumes, measurement point clouds, colour-coded deviation plots from 3D nominal-actual comparisons, video images, measurement and calculation elements as well as flags with nominal and actual values, tolerances and deviations. In order to meet the most diverse requirements, the software has a modular structure. Various machines can be operated, from simple measuring projectors to complex multi-axis coordinate measuring machines with multi-sensor systems or even X-ray tomography sensors.
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The “intelligence” of the WinWerth® measurement software then takes over, for example, the exact determination of the object area to be captured, the selection of the geometrical element to be measured (e.g. straight line, circle, corner point) as well as the linking algorithms for determining geometrical characteristics such as distances, angles and diameters.
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Measurement points or scan lines are automatically distributed on the geometry elements to be measured, e.g. as circles, cylinder surface lines, stars or spirals, taking into account the necessary travel paths. In this way, the complete measurement sequence, including evaluation, is first created offline using the CAD model or online with the minimum number of points for the respective geometry element.
The evaluation is mainly realised by PC hardware and software. In a first processing step, the image can be improved with image filters (optimising contrast, smoothing surface disturbances). This enables reliable measurements even with difficult edges and rigid scanning in incident light.
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The feature tree in the WinWerth® user interface also controls the test and change mode, in which programmes can be run step-by-step and changes can be added. A text editor, available in parallel, allows experienced operators to directly enter or change DMIS programme code while teaching in programmes.
Measurement programs can be generated both online and offline using 2D or 3D CAD models. The CAD models are imported in either STEP, native CAD or IGES format. In offline mode a sensor is selected and a patch or combination of several patches is selected on the CAD model. The software computes the necessary actions for the sensor and automatically generates the corresponding segment of the program. The graphic shows the simulated measurement sequence. In online mode the procedure is similar to the offline mode, but the coordinate measuring machine immediately performs each operational step so it can be observed live.
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| Model | TomoScope L FQ | |
|---|---|---|
| General | ||
| Machine Type | Multisensor coordinate measuring machine with CT device | |
| Probing System | Compact X-ray sensor, Optical Sensors, Image Processing, Mechanical Probing Systems: Trigger and Scanning Probes | |
| Modes of Operation | Linear path control | |
| Measuring Software | WinWerth® | |
| Operating System | MS Windows | |
| Measuring Range | ||
| Max. Workpiece Diameter | Based on configuration | |
| Max. Workpiece Height | Based on configuration | |
| X-Ray Tomography Sensor | ||
| X-Ray Tube | Maintenance-free closed high-performance X-ray tube | |
| Detector | High-end X-ray detector for fast image acquisition in OnTheFly mode | |
| Voxel Size | 127 µm to 200 µm | |
| Additional Performance Data | ||
| Resolution of Linear Measuring System | 0.1 µm (0.000004″) | |
| Positioning Speed v | 150mm/s | |
| Acceleration a | 300mm/s² | |
| Supply Data** | ||
| Voltage | 430 V (230 V) ±10% | |
| Frequency | 48 – 62 Hz | |
| Power Consumption | Max. 2000VA | |
| Air Pressure | 5.5 – 10 bar | |
| Air Consumption | 3000 Nl/h | |
| Permissible Environmental Conditions | ||
| Environmental Air | Humidity 40% – 70% rel. hum., oil free | |
| Air Contamination | Max. 0.05 mg/m³ | |
| Operating Temperature | 10 – 35 °C (50 – 95 °F) | |
** Other supply data on request or according to specific countrykit.
*** Depending on calibration condition and aspect ratio of the workpieces.
| Maximum Permissible Error MPE (Extract) | ||
|---|---|---|
| For advanced laboratory conditions | ||
| CT Sensor ¹ ~ | P: 4.5 µm | SD: (4.5 + L/72) µm |
(Where L = measuring length in mm comparable to ISO 10360 and VDI/VDE 2617)
1) ∂ = 20 °C ± 2 K ∇∂ = 1 K/h m ≤ 2 kg (4.4 Ibs.)
Contact us today to inquire about the TomoScope L FQ and enhance your computed tomography measurement capabilities.
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