TYPE OF CAD SYSTEMS IN TEXTILES
The development of CAD and CAM and particularly the linkage between the two overcame traditional NC shortcomings in expense, ease of use, and speed by enabling the design and manufacture of a part to be undertaken using the same system of encoding geometrical data. CNC plays a vital role in many of the industies,listed below is the use of CNC in clothing sector,
TEXTILE DESIGN SYSTEM:
Woven textiles are used by designers and merchandisers for fabrics for home furnishing and to men-women-children wear. Most fabrics whether yarn dyes, plain weaves or jacquards can be designed and in fact are invariably used abroad using a CAD system for textiles. Similarly, embroideries are also developed at CAD workstations.
Some systems specialize in knitwear production and final knitted design can be viewed on screen with indication of all stitch formation. For instance, a CAD program will produce a pullover graph that will indicate information on amount of yarn needed by colour for each piece. Another example of the new technology in the industries using a yarn scanner which is attached to the computer scans a thousand meters of yarn and then simulates a knitted/ woven fabric on-screen. This simulation will show how the fabric will look like if woven from that yarn.
The process involves use of computers in design, development and manipulation of motif. The motif can then be resized, recoloured, rotated or multiplied depending on the designer's goal. Textures and weave structures can be indicated so that printout either on paper or actual fabric looks very much the way the final product will look. The textile design system can show color ways in an instant rather than taking hours needed for hand painting. New systems are coming which have built-in software to match swatch colour to screen colour to printer colour automatically i.e. what you see is what you get.
TEXTURE MAPPING: 3D DRAPING SOFTWARE
This technology allows visualization of fabric on the body. Texture mapping is a process by which fabric can be draped over a form in realistic way. The pattern of the cloth is contoured to match the form underneath it. The designer starts with an image of a model wearing a garment. Each section of the garment is outlined from seamline to seamline. Then a swatch of new fabric created in textile design system is laid over the area and the computer automatically fills in the area with new colour or pattern. The result is the original silhouette worn by original model in a new fabric.