Since the introduction of since CAD, pattern cutting through dramatic changes, but the operators of these systems and how many fully understand what happened in the end, why not? DavidLyon and TonyGarle in this area of cooperation with more than 65 years of experience, and has some interesting ideas.
This is a bold statement, but in essence it is correct. Either manually, mechanically, or by the most sophisticated computer system, can never lasts from three-dimensional curved head to produce completely accurate flat pattern.
Plane patterns Any case, if you know you managed to get what is still possible to get a very good style. This can be inside and outside the plane through the stitching around the center line pattern, can be generated simply by finger pressure to help the cord clamp to prove. It will not be perfect, the toes, the back seat and elsewhere show that is not accurate.
First plane pattern is wrapped by the shoe tree on the edge of a level of reform and clean up the joints to retain lasts approximate size, shape and surface area made of. The upper hand immersed in water and to help clamp, which is enough. Graphic patterns can be made of a variety of ways, including corrugated paper, plastic tape and body wrinkles. But they need to leveling, this is also the practical problems that may arise between.
Leveling process of plane patterns of people with experience will tell a lot about a particular shoe lasts and how the process will operate. Where the largest deformation occurs or creases and folds, or undue tension and strain. As for upper clamp to help the situation when the two can be corrected, but as long as the upper material is soft and malleable, can get very good results. Fully understand the importance of reversible factors, so that can be embedded pattern of correction and compensation. Reversible nature of this case is the flat pattern in place crumpled shoe must be extended, the entire flat surface patterns are stretched or cut exposure to the local upper to shrink.
Using hand tongs to help and to some extent help the machine clamp, upper in the shoe last four weeks will be compressed, thus extending the length and size allows. As those in the external clamp to help, set last, soft slippers or socks in sewing and other structures, reducing the bottom line through upper suture. Through the seams of the changes can increase or decrease the size and length of the shoe. All this requires a very precise pattern and sewing, because only little or no space reserved for error margin.
Someone once said, what footwear is not manufactured by the art of the possible, the shoe last upper components into a round flat, and then circle back to the shoes. And at every stage, we must understand that results will be what, how to deal with them and develop techniques to compensate for all of you know there will be errors. Shoe is not as direct as many people think.
CAD system Computer-aided design system has many advantages, but they also may have one or two serious shortcomings. The most important of these shortcomings is 3DCAD software in accordance with the user's shoe last based on patterns generated by imprecise. Basic pattern is made in the shoe last head of all footwear is responsible for the accuracy and quality. Sometimes, 300mm in length on the basis of style, extreme cases, there may be up to the back of the slope error of 60-70mm. Unfortunately, many of the world are accidentally lost activity pattern (onto the natural slope below), which causes difficulties and pliers help the poor quality shoes.
How do you judge? Only a very safe way, that is to be a cord or a simple meadow with shoes (tennis shoes, football shoes, etc.) vamp, in the shoe last head checking their suitability. Can follow the size of hand-made shoe last cord, while the meadow on the shoe uppers to help at least part of the clamp. If it has a taut roof lines, in the critical areas there is no obvious holes or deformation, it is appropriate. However, a CAD drawing of any teacher will tell you, leveling the software development is indeed a very challenging project. More successful the system is heavily dependent on how a person on a deep understanding of neat level, this knowledge will be added to the CAD process. Without this knowledge, then what is extremely difficult to identify.
Sabtu, 25 September 2010
How To Get The Perfect Shoes Style
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