Interview with Jan Barnas and Paul van der Kampen from Coenradie​

Interview with Jan Barnas and Paul van der Kampen from Coenradie

We interviewed Jan Barnas and Paul van der Kampen, from Engineering Consultancy Coenradie: we took advantage of their availability to ask for some information on their project of reverse engineering a 1928 Alvis FWD cylinder head.

  • What were you doing?
Reverse engineering a cylinder head and creating a virtual reality experience by making use of that very same scan data.
 

The original cylinder head dates back to 1928. After almost 90 years of use and multiple repairs, this cylinder head was beyond restoration. Therefore the customer asked us to scan and reverse engineer this cylinder head, based on a scrapped version that was available.

First, we made a scan of the sample by using our Cronos3D. Due to the limited access to the internal geometry, we had to use a special technique to recreate a negative mold, create a 3D scan of that mold and align it to the initial scan of the external geometry.
From there we started to reverse engineer a “new” design using the 3D scan as a reference in our CAD system (Siemens NX). Besides some small improvements, the design had to match the original intended design. In order to reassure this, we made several comparisons between CAD and scan data during the design process.
After the production of the first set (casting and machining), a new scan was been made to check the final product. This new scan has been used to check and optimize the design even further. 

  • How did you plan your 3D Scanning/Workflow?
We used 3 setups: top, bottom and one for specific details. We used 10 mm targets in combination with the rotary table.
  • Did you reach your goal?

Yes, absolutely. In the end, the customer is very happy with the new cylinder head,
which fits straight onto the original engine block and runs great.

 

Jan Barnas_post

Jan:

we decided to create a virtual reality experience in order to showcase some of the technical improvements we made to the new cylinder head. Since the production of this car in 1928, technology and knowledge about combustion engines has improved a lot. While keeping the design and looks as original as possible, we added some improvements to the design which optimized the performance and reliability of the engine. Being able to work with that same scan data within virtual reality is some great value added for this project and for getting the public to understand what exactly went into this project.

Paul:

It’s easier to understand and explain the implications and context of these changes when you’re looking at the reverse engineered model in 3D space, as if it’s actually there right in front of you. As opposed to viewing a 3D model on a computer screen, or trying to explain 2D drawings to people who aren’t really technically minded.
The 3D model of the cylinder head that we were able to produce with the Cronos 3D scanner has turned out really great for both ourselves and ultimately for the customer as well. We were able to relatively quickly scan the original cylinder head and use that data to produce a clean CAD model with added improvements. The details we were able to capture with Open Technologies and the precision with which we were able to do so, gave us a perfect foundation for successfully restoring this engine. Meanwhile, the new cylinder head has been installed and the car is running great again.

Paul van der Kampen_post

Via Matteotti 161/163A 25086 Rezzato (BS) Italy | Phone: +39 030.3543106 | ID/P.IVA e C.F. 03598170177 | C.S. € 20.000,00 Interamente versato

Official Release of ScanWay 1.5

Official Release of ScanWay 1.5

4 June 2018

One year after the first official release, we are ready for the new version of ScanWay: version 1.5

“We are proud of the release of ScanWay – version 1.5: we applied several changes to improve the users experience and the opportunities of work with our top-of-the-range scanner NeWay”.

Among the most important news we point out: new scanning strategies and performances, renewed functionalities of the Reference Rim, an improved acquisition of the implants, an even more linear and intuitive user interface, and much more.

The substantial news of the top-of-the-range software are several:

    • New “Expert” mode added to guided and free mode, for an even more fluid and flexible workflow
    • Addition of connectors in the teeth panel for different waxup, to export them corectly to the CAD
    • During manual alignments, the second interactor can be expanded to make the window bigger and place the points more easily on the object
    • Opportunity to show/hide the libraries from the 3D view during the alignment
    • Advanced diagnostic of implant libraries when not correctly loaded
    • Possibility to update the guided procedure when Exocad project is modified with no need to restart the scanning software
    • Opportunity to start the software even without license to allow diagnosis on the hardware
    • Control over warming up parameters of the scanner
    • New functions of the reference rim, used to calibrate axis (if the license does not include the optional module Dynamic Articulator), making the procedure faster and more precise
    • Renewed impression strategy, with the possibility to acquire stumps separately and align them later with the reference
    • Support to the acquisition of the Movement Marker of Zebris
    • Additional data acquired during an integration are displayed in color
    • For the optional module Concept Quad: possibility to scan unsectioned models first and separate stumps later, to be aligned to the reference
    • Improvement of the interface for compatibility to 2K/4K monitors