Computer Aided Design

Having come through the Era of the computer design age, starting at Balfour Beatty designing cleaning towers for Heathrow's then new terminal all done in 3 perspectives on a draughtsman's table, through to coming back to the design environment some 15 years later and being taught native design on a computer in Catia. Soon moving onto Think 3 Design, Pro-Mechanica, Ansys, and my preferred Nurbs/Surfacing program Rhino. This time with a spell missing in the middle has allowed me, I feel, a better perspective on using what's right for the Job and not simply a case of well that's all I can do.

The advances in CAD have not been kept up by the general manufacturing within the UK, Global GT GmbH Ltd based in the centre of the Formula 1 society, located only miles away from Cosworth, Ilmor, Force India, Mercedes, and Red Bull to name just a few we could not find a manufacturing centre that could take a native CAD file and turn or machine a part from it, instead they ask for a PDF drawing.

It's because of this lack of data continuity that we set up our own CNC manufacturing centre. An advantage of this route that we had not been aware of is now, we design a part with all its details, that not only can be manufactured but are cost sensitive too. This valuable knowledge sets us aside from others and means Global GT GmbH Ltd can, and will, deliver that result you never knew you could achieve.

Solid and Surfacing Modelling explained.

  • starting point of any solid model a simple solid Solid's, Grow the shape You start with a generic outline of a shape, here we are starting with a circle, we will then grow this by "padding" to form a tube.
  • specifying details in a solid model Detailing the shape Now taking this tube, we add on an end, a larger circle to act as a washer, and then add a fillet to strengthen the corner.
  • finished solid model Adding in machine detail Having created this form, and the detail of the shape, we now detail the threaded centre ready for machining.
  • ground work first for surface creation Surface, It starts with a line When creating a surface model you simply draw a few lines to start the process. they can be internal or edge's.
  • building the surfaces Sweep the lines After the first lines are created you add in cross sectional lines and then simply "sweep" them to form a surface.
  • Finished body in white The finished article The process of adding in lines and cross sectional lines can quickly create a fully surfaced model.
  • The 16G seats used in Greyscape A Finished Solid Model Using a solid modelling package a complex part has been created, here a seat for BE Aerospace complete with armrest mounted TV screen.
  • Amillim in all its glory A Finished Surface Model The surface modelling program has been used to create a full Nurbs model suitable for CGI or indeed for direct machining.