Similarity theory which used in knuckle-joint press design

We have designed the knuckle-joint press which can fit parametric variation. According to the theory about combining press devices´ size design with similarity theory, we have designed knuckle-joint press´s mechanical design by means of engineering limitation. We also have verified these designs for many times by comparing design model with formulations, which makes the whole design meet practical using. The methods which have been introduced here have great important roles on mechanical design.