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Casting & Forging

In casting applications the ATOS 3D Digitizer offers various advantages           compared to traditional measuring techniques. The fast full field measuring technology of ATOS guarantees a fast validation of the object's complete and complex surface rather than just collecting a few points leaving large unknown areas (Fig. 1). Based on the principle of triangulation the ATOS 3D Digitizer projects different fringe patterns onto the object which are recorded by two cameras (Fig. 2). The computer automatically calculates the 3D coordinates for each camera pixel of the scanned surfaces with very high precision and resolution. Each individual measurement takes approximately 1-2 seconds and is automatically transformed to a common object coordinate system using previously applied reference points. During measurement the software checks online for system calibration, sensor movement or any ambient changes that might affect the measurement

The ATOS 3D optical digitizer is mobile and can simply be transported to the object, so that heavy casts, tools and models can be easily inspected right away on-site in foundries, tool- and die- shops (Fig. 2). Due to its robust design, the sensor head is built to perform in harsh and adverse production environments.

As a non contact optical measuring device ATOS is also ideal to check sensitive sand cores before the casting process (Fig. 3).

The measuring volume can easily be adapted to specific measuring tasks and object sizes within a few minutes by interchangeable lens sets. Due to this flexibility, the ATOS system is able to measure objects of various sizes, from filigree injection-molding components to a complete aircraft. Turntables, robots or multiple axis motion units are available for automated measurement of multiple parts (Fig. 2).

ATOS Inspection Software

The ATOS Inspection Software provides a number of functions essential for the Casting Industry (Fig. 4). In addition to full field 3D shape and dimension analysis against CAD the software allows calculation of material thickness in order to check material allowance for further processing. It is possible to control size and position of basic primitives and also virtual calipers are included. Inspection sections with tolerance bands are available as well as classical 2D dimensioning tools. The ATOS reference point system allows moreover checking of parting surfaces for offset, fitting and proper closing of mould halves.

For documentation and further processing the ATOS Inspection Software includes enhanced reporting and documentation functions and interfaces in order to generate standard or customized 3D measuring reports or traditional tables with CMM points (Fig. 5). Results and deviations can be exported to various formats such as Excel, HTML, Word, etc. For recurring measuring tasks the software evaluation can be automated using powerful macros and scripting language. GOM also provides the free ATOS 3D Viewer and such measuring results can be easily shared with customers or colleagues from other departments.

The ATOS 3D optical digitizer is mobile and can simply be transported to the object, so that heavy casts, tools and models can be easily inspected right away on-site in foundries, tool- and die- shops (Fig. 2). Due to its robust design, the sensor head is built to perform in harsh and adverse production environments.

GOM Touch Probe

For evaluation of optically hidden surfaces such as water jackets, cooling holes, deep pockets and deep cylinders parts had to be measured until now on classical CMM´s, a process which is very time-consuming due to necessary fixing and alignment of the parts.

The GOM Touch Probe as an Add-On to the ATOS 3D Digitizer helps to overcome this obstacle. The handheld Touch Probe enables the user to switch easily between 3D full-field measurement and online tactile probing of specific single points (Fig. 6). A time-consuming modification or rebuild of the sensor setup is not necessary.