Developable Product Forms

Developable Surface In mathematics, a developable surface is a surface that can be flattened onto a plane without distortion Many developable surfaces can be visualised as the surface formed by moving a straight line in space Developable surfaces that can be realized in 3D space are cylinders, cones, planes Spheres are not developable as they cannot be unrolled into a plane All developable surfaces are ruled surfaces Not all ruled surfaces are developable surface, hyperboloids are examples of ruled surfaces that are not developable

Developable Product Forms Straight ruled surfaces appears on many products formed by folding and bending sheet materials Skilful combination of ruled surfaces can make a mathematically simple developable surface looks as dynamic as very complex surface By introducing free-form curves and varying the matching endpoints, designers can introduce dynamism to the product form

Sheet Metal Components and Enclosures

Sheet Metal Consoles

Bendable Interior Objects Easy.Storage for B-LINE by Matthias Demacker Sheet As Structures Lightlight table lamp by stauffacherbenzstauffacherbenz

Sheet As Structures origami.series for van esch by Matthias Demacker Come back by Velopa

Sheet As Structures Vertigo side table by AquilialbergBourgogne by Mikael Ling Di Classe FULGURO's reLeaf

Creep tables and shelves by Susan Bradley's Light as a feather 'Alle cinque' Trays by Serafino Zani Sheet As Decoration Driade 100 PIAZZE by Fabio Novembre

Flexible Sheet Materials Salad Set by Karichdesign 'Flat' Travel tray by Marco Susani, Mario TrimarchiMarco SusaniMario Trimarchi Kombinationsbestick by Kristin Granath

Tote by conphorm Flexible Sheet Materials

Opus series by Lamina Design Adapted from:

Paper Sculpture by Peter Callesen Impenetrable Castle by Peter CallesenPeter Callesen On The Other Side by Peter CallesenPeter Callesen

Sheet Metal Forming

Bending Bending is a common manufacturing method to process sheet metal. It is usually done on a bend press (or break press), but also swing-bending- machines are used. Typical products that are made like this are electrical enclosures Adapted from:

Rolling Rolling is a fabricating process in which the metal, plastic, paper, glass, etc. is passed through a pair of rolls There are two types of rolling process, flat and profile rolling In flat rolling the final shape of the product is either classed as sheet (typically thickness less than 3 mm, also called "strip") or plate (typically thickness more than 3 mm) In profile rolling, the final product may be a round rod or other shaped bar such as a structural section (beam, channel, joist etc) Heavy plate tends to be formed using a press process, and is termed forming, rather than rolling

Roll Forming Roll forming is a continuous bending operation in which a long strip of metal is passed through consecutive sets of rolls, or stands, each performing only an incremental part of the bend, until the desired cross-section profile is obtained Ideal for producing parts with long lengths or in large quantities A variety of cross-section profiles can be produced, but each profile requires a carefully crafted set of roll tools

Activity – Lamp-shade Design Design a new lamp- shade for IKEA DINGE, the design should be manufactured by cutting and folding PP plastic sheet Test your design on paper Cut your final design on card Adapted from: IKEA DINGEIKEA DINGE