Metrology and dimensional control

Dimensional control surveys of parts and equipment, with the objective of coming up with virtual simulations that are able to be compared with 2D or 3D theoretical CAD models.

These coordinates (x,y,z) are captured selecting the most suitable technology based on each project characteristics and tolerance requirements. Then, after the post-processing, dimensional control reports or deformation analysis are done, adapting them to each project or client requirements or preferences.

Highlight that in Dogram, we have specialized in projects adopting the GD&T measurement system, according to ASME and ISO norms, and we have the experience gained in more than 100 projects of this kind at international level, including fabrication processes as well as existing equipment or facilities.

Most common issues
of our clients

  • The final client required the manufacturer that a third-party company geometrically verified a part during the fabrication process.
  • Lack of CAD and/or inconsistency between the existing CAD and the reality when facing a modification or repair of a piece of equipment.
  • Need for deformation or wear analysis of any part of a piece of equipment
  • Lack of experience in high-precision dimensional control surveys
  • Need for a verification before signing off any part from a supplier. Addressing accountability.
  • Production peak times with insufficient resources in-house to deal with dimensional control measurements
  • Production delays due to non-conformities that could have been avoided introducing intermediate dimensional control surveys
  • The final client needs to review and evaluate in detail dimensional control reports given by the quality department of its supplier

How can DOGRAM put its experience to your service?

  • Adopting the latest measurement methodologies and techniques for the extraction of accurate actual dimensions and metrology reports or updated CAD.
  • Through 3D digitization with high accuracy or high range laser scanners, compared with nominal data doing detailed deviation reports.
  • We understand the fabrication process in partnership with our clients and we propose dimensional control solutions adapted to the needs of each process
  • We chose the right technology and we mobilized our team to your client´s supplier facilities with the purpose of performing a contrast measurement and validating the delivery.
  • We integrate ourselves in the quality department of our clients, addresing full projects, adapting to its internal methodologies to provide support in peak times when multiple projects coincide in time.
  • Together with the client, we address non-conformities from previous projects and we come up with improvement proposals based on intermediate measurements over the fabrication process, obtaining reports that help evaluate the evolution of a part during the process and could even help the final client.
  • In a serial fabrication process, we create automatizated dimensional control methodologies based on the design and fabrication requirements that allow the verification of every fabricated unit, unifying criteria and following along from the first to the last part.
  • We analyze third party reports, extracting conclusions with the purpose of supporting the final client in the validation of the deliveries of its suppliers.

Technologies we use

Laser scanning  |  Industrial monitoring surveys  |  Laser tracker  |  Scanning robotic arm |
High precision scanners |  Easy laser | Measuring machines by coordinates (MMC) |
Photogrammetry|  Micrometers|  Calipers |  Roughness tester

Our experience in Metrology 4.0

  • In a Metal Mechanic fabrication process, scanning of the current shape of any part in order to check the correct location of any welded elements and ensure no issues interrupt the machining process.
  • Dimensional control of XXL offshore foundations. We combine different technologies that have already assisted with reducing field time and increasing the density and quality of the data collected.
  • High precision dimensional control surveys, based on the GD&T requirements of the existent CAD. We provide visual and easy to understand metrology reports that facilitate the correct design, fabrication, installation and fit-up of the relevant components.
  • Comparative studies between reality and existent CAD of big structures, combining drone and laser scanning data collection.
  • Component analysis prior to its machining process in order to check for oversize areas.
  • Deviations analysis of valves in two different stages (i.e stand-by-cold & operating-hot). This way, it checks the right operation of the system and that the potential deviations are within the expected tolerance values.
  • Reverse engineering of any component using 3D scanning and modeling
  • Obtención de la superficies cad pieza para su uso en programas de CAD CAM en lugar de modelos 3D teóricos, ajustando de esta forma el mecanizado a la realidad de la pieza.
  • Modeling of any component in substitution of the theoretical 3D model, adjusting the machining process to the actual reality of the component