This paper design a 3 Java Card the installation of the swing hydraulic pressure tank peace side spiral the spiral swing hydraulic pressure tank increased power structure. Traditional machine tools such as lathes, Miller, Chuck 3 Claws of workers in general rely on a manual for gripping, this will not only increase the intensity of the work of the workers, and the required gripping power is very great, but also a folder is not immediately are often the case, hinder the increase in productivity. The 3 Claws chuck the installation of the swing hydraulic pressure tank peace side spiral institutions constitute a spiral swing hydraulic pressure tank increased authority to achieve the original chuck the better, and the additional pressure can be converted into a circular movement and the simple, reliable, can achieve a higher increase to more than a sound economic and practical.
Key words: Three-jaw chuck, hydraulic cylinders clamps force
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