8/28/09

Lightweight Solutions based on DDM Technology

Market Release: The economical climate has positive effects on the way people look at our developments, in the past few weeks we’ve run multiple projects based on weight-saving programs. Although most of them are “not for publication” we’re proud to highlight a project for the next generation automotive industry, the one focusing on Solar cars…. Melotte supports the Belgian Solar team since many years, at this year’s edition we’ve done two important projects. The first one is another weight saving project on magnetic in-wheel motor, this is a pure multitask milling project, the second one is full DDM project and contributes substantially on this year’s challenge to minimize excess material.

In the past the team used a conventional steering wheel made out of aluminum, the raw material (4,5 Kg) was milled down to a basic geometry. Given the tight space in Solar car’s cockpit the conventional steering wheel did not feel comfortable. Driving the car down-under in extreme climate conditions pushed the engineers to develop a mono-block full titanium light-weight steering wheel. Based on FEA analysis’s we’ve come to the conclusion that we could hollow-out the part and take the walls down to 0,8 mm. All this results in a huge weight saving, above we’ve been able to reduce Buy-To-Fly ratio’s from 4,5 Kg (conventional milled) to 0,3 Kg, DDM based on layer manufacturing. Another good example of Carbon Footprint optimization and more precise a raw material saving of about 90%. Finally we’ve realized a nice piece of engineering and we wish the Solar Team all the best during The World Solar Challenge in Australia!

8/14/09

E-Texturing is a revolution in digital manufacturing


Market Release: Since a few months we’re actively developing e-texturing features on DDM parts. Mainly we add texture (soft gripping, leather texturing, topographical features) on 3D solids and produce these in a Direct Digital way. Instead of having advanced post-processing treatments such as milling/EDM, we simply add it on the surface of the digital model (STL based). Tests have been made on thin walled parts, mould inserts and even on some medical implants. All of them being ready for market release as from now!

e-Texture is one of the latest software solutions of Materialise. The software enables to apply a 3D Texture on a 3D digital model. The uniqueness of e-Texture is that the texture will thus be applied during printing and not after printing, resulting in time and cost savings. Lieve Boeykens, Sales Manager at Materialise says: “In house we can experiment enough with printing plastics, however having no own metal machine, we have to rely on our good relations with Melotte.” Being both partner of the Belgium Solar Team (
http://www.solarteam.be/ ), a project was easily defined to print the first model in titanium with a leather texture immediately applied during printing. The pictures shows the first result coming from Melotte’s DDM set-up. The part is thin walled (0,8 mm) and freeform, cost savings are important and most of all, we respect extremely short delivery times and can easily confirm the accuracy by showing the optical comparison. Another good example of what DDM can bring to you!