Contrôles Essais Mesures
mardi 7 février 2023
  • Find out!
  • Receive our newsletter
  • Contact us
  • English
  • Français
  • Articles
    • Measures
    • Non destructive testing
    • Optical
    • Automatisms
    • Industrial data
    • Management
    • Type d’info
      • Market Info
      • Product Info
  • Expert opinions
  • Agenda
  • Spotlight
  • Podcasts
    • Metrolaudio
    • Questions de métrologie
    • 3 questions for ...
    • Editos
  • Kit media
No result
See all results
  • Articles
    • Measures
    • Non destructive testing
    • Optical
    • Automatisms
    • Industrial data
    • Management
    • Type d’info
      • Market Info
      • Product Info
  • Expert opinions
  • Agenda
  • Spotlight
  • Podcasts
    • Metrolaudio
    • Questions de métrologie
    • 3 questions for ...
    • Editos
  • Kit media
No result
See all results
Contrôles Essais Mesures
No result
See all results
Home Expert opinions

Retro-engineering of a guiding dawn

By Creaform
March 24, 2021
in Expert opinions, Measures, Optical
Reading time: 8 min
Share on LinkedInShare on FacebookShare on twitter

Hydroelectric power plants around the world have been equipped with Voith Hydro components for more than 140 years. As a full-service supplier of hydroelectric power plant equipment, Voith is one of the world's leading manufacturers.

Voith Hydro GmbH - Co. KG, headquartered in Heidenheim, is a leading provider of comprehensive services in the field of machine technology equipment for hydroelectric power plants.

In order to scan components for which there is no CAD data, the company uses the HandySCAN 3D scanner and Creaform's MaxSHOT 3D photogrammetry camera.

The retro-engineering project

The goal was to reconstruct a missing filling part for a guiding dawn and assign an existing filling part to the right steering dawn. The guiding blades are components of the distributor. They control the volume of water and direct it on a turbine wheel in the desired flow direction.

Photogrammetry image of a guiding dawn with the MaxSHOT 3D, copyright: Voith Group

Initially, a photogrammetry measurement was performed on the two lead blades using the MaxSHOT 3D optical coordinate measurement system to increase the accuracy of the scanning and to be able to perform the scanning process flexibly. The MaxSHOT 3D system offers a measurement accuracy of more than 0.015 mm/m and is ideal for large projects and parts 2 to 10 m long, allowing for very precise measurements.

Then a scan was performed, in which the existing filling room was scanned. The scan file should represent as accurate an image as possible (in the order of 0.1 mm) of the edge of the wing, in order to allow for an exact assignment and reconstruction of the filling parts. The scanning and processing of scanning files is done using VXscan. By removing redundant or accidentally captured areas and then recording them as .stl files, the software also cleaned up the model.

In order to obtain a complete CAD model, it is necessary to carry out a surface reconstruction. This operation was performed in Polyworks Modeler. The polygon models generated from the scanning files serve as the basis here. During processing, CAD images of the filling part and its equivalent were generated on the steering dawn.

The scanning files for the head-in blades and the filling part were also used for the "digital adjustment test." Here, the scanning files have been merged into Polyworks Inspector to find out which dawn the existing filling belongs to. The same thing was done with the new filling part to make sure it matched the guiding dawn.

Benefits of portable measuring devices

"In the hydropower sector, many of the free-form surfaces used are difficult to measure using conventional measuring instruments. In order to be faster, more efficient and more flexible, as well as to obtain the benefits of retro-engineering, we decided to use Creaform's scanning technology," explains Daniel Roessler, quality engineer in the Voith Hydro group division.

In the past, the company used various portable measuring devices as well as 3D measuring arms. Creaform's HandySCAN 3D is much more flexible and free than a measuring arm. The dimensional range of components in the hydropower sector ranges from 500 mm to 7000 mm. It is essential to use a portable system that can capture the desired areas without having to constantly reposition. In addition, the previous system could only seize small areas. In comparison, the Creaform system works quickly and efficiently and can therefore also capture large areas.

Roessler continues, "In our field, we need mobile devices that can be used flexibly and are ready to use without much effort. With the HandySCAN 3D as well as the MaxSHOT 3D, we have two products that allow us to react quickly and flexibly on the customer's site in the power plant, at the suppliers, as well as in the workshops."

Return on investment

Copyright : Voith Group

It would certainly have been possible to make some of the measurements using manual measuring equipment, from which the filling part could have been assigned and a new one built. However, it is very likely that the new fabricated filling part should have been manually corrected afterwards, as the freeform outline cannot be recorded with conventional methods. The components of the power plant would then have to be transported to the Voith plant, which would involve additional costs and effort. Thanks to scanning technology, only one person was required to perform on-site scanning at the power plant. Thanks to the digital images of the components, the other steps could be performed digitally on a PC.

In principle, a 40-50% time and money savings potential can be achieved using retro-engineering for components with an average level of detail compared to standard engineering. The advantage here is that after scanning, all profiles and measurement data are complete in a single file, and tedious re-checks on the component are no longer necessary. In addition, the potential risk of erroneous manual measurements and misinterpretations is reduced to almost zero. The location of the component is not relevant when using laser scanning. With Creaform portable devices, Voith Hydro is able to capture details anywhere and in almost every position.

A positive result on all fronts

"Practices and processes have improved, especially in terms of what is possible. With HandySCAN 3D and MaxSHOT 3D, Voith Hydro is able to respond flexibly and quickly to tasks or problems. Components can be scanned and scanned or rebuilt on a PC in no time. Responsiveness is an important feature that Creaform systems make possible. In production, in the service area or on construction sites, situations often require an immediate response and long waiting times are often accompanied by high costs. With our Creaform systems,we are able to immediately offer the customer a solution and analysis," says Roessler.

"Creaform has sophisticated systems for scanning components. Thanks to Creaform's products, we are able to accurately measure and digitize our customers' components, quickly and cost-effectively for the future, especially those of past manufacturing years, when digitization did not yet play a role. In addition, we can manufacture components individually as needed."

About Voith

Voith is a globally active technology group. With its broad portfolio of digital equipment, products, services and applications, Voith sets standards in the energy, oil and gas, paper, raw materials, transportation and automotive markets. Founded in 1867, Voith is now one of Europe's leading family-owned businesses, with more than 19,000 employees, 4.3 billion euros in sales and sites in more than 60 countries around the world.

The Voith HydroGroup division, headquartered in Heidenheim, Germany, is a leading supplier of complete equipment for hydroelectric power plants and a reliable partner. Voith develops long-term individual solutions and services for large and small hydroelectric power plants around the world. With its portfolio of products and services, the company covers the entire lifecycle and all components of hydroelectric power plants, large and small: from generators, turbines, pumps and automation systems to spare parts services, maintenance, training and digital solutions for smart hydropower.

External resources
site

Labels: Product Info
Previous article

Coronavirus: manufacturers of vaccine vials under pressure?

Next article

Exploring the reliability and robustness of wireless technologies

Related articles

Measures

Beamex ouvre une nouvelle filiale en Chine

Beamex crée une entreprise à capitaux entièrement étrangers en Chine. Cette filiale représente une étape importante dans la progression de Beamex en Asie et permet de consolider sa position d'acteur...

By Writing
7 février 2023
Optical

Nouveaux lasers CO2 série Infinity : i150W et Fast Pulse

Ce laser i150W va compléter la série de lasers compacts et flexibles Infinity (50W à 120W).Les constructeurs de machines OEM et les intégrateurs pourront ainsi bénéficier d'une empreinte commune pour...

By Writing
3 février 2023
Optical

Creaform présente le nouveau scanner 3D HandyScan Black|Elite Limited

Les processus de fabrication et d'étalonnage optimisés permettent au fleuron de Creaform, un scanneur 3D de qualité métrologique, d'offrir une précision de 12 microns, établissant ainsi un nouveau standard dans...

By Writing
2 février 2023
Measures

Nouvel hexapode Solano :  un positionneur ultra compact et rapide 

Pour répondre aux applications de positionnement de précision dans l’industrie ou la recherche, Symetrie présente Solano, un nouvel hexapode ultra compact ayant une hauteur de 104 mm et un diamètre...

By Writing
31 janvier 2023
Measures

Fluke Calibration : le 5560A, nouvel appareil d’étalonnage multiproduits hautes performances

Idéal pour les multimètres numériques à résolution 6,5 chiffres, le 5560A de Fluke Calibration est complété par le nouvel appareil d'étalonnage multiproduits performant 5550A (5,5 chiffres) et l’appareil d'étalonnage multiproduits 5540A (4,5 chiffres),...

By Writing
30 janvier 2023
Measures

Les détecteurs de niveau se libèrent du contrôle en local

Les détecteurs de niveau à lames vibrantes Liquiphant FTL51B, FTL62 et FTL64, équipés d’une électronique Hart, rendent notamment possibles, à distance, les tests Heartbeat Verification et Sil. Si de nombreux...

By Writing
27 janvier 2023
Next article

Exploring the reliability and robustness of wireless technologies

Our latest issue

For more feature articles, subscribe to Contrôles Essais Mesures magazine.

Spotlight

Advertising

Newsletter

Receive free information from the Contrôles Essais Mesures website with each publication

You can unsubscribe at any time. Your data is processed according to our privacy policy.

Thank you !

Please now check your inbox or junk folder to confirm your subscription.

.

Our partners

Contrôles Essais Mesures

© 2021 Contrôles Essais Mesures, the technology and application review for laboratories and industry.

You want ?

  • Contact
  • Who are we ?
  • Become an advertiser
  • Sitemap
  • Legal Notice
  • Data protection
  • Unsubscribe from the newsletter

Follow us

No result
See all results
  • Item categories
    • Measures
    • Non destructive testing
    • Optical
    • Automatisms
    • Management
  • Expert opinions
  • Magazine
    • Presentation
    • Kit media 2021
  • Agenda
  • Spotlight
  • Podcasts
    • Metrolaudio
    • Questions de métrologie
    • 3 questions for ...
    • Editos
  • Contact
  • English
  • Français

© 2021 Contrôles Essais Mesures, the technology and application review for laboratories and industry.

Ce site utilise des cookies. Vous pouvez visiter notre politique de protection ds données personnelles pour en savoir plus.
X