In this paper, a parameter which describes the extent of stretching, relative to the amount of draw-in, is proposed. With the use of this parameter, the effects of drawing parameters, such as the punch nose radius, the blank diameter and the blank-holding load, on the drawability of ...
This paper deals with increasing the drawing height of metal conical square cups with anti-lock braking system (ABS). A novel technique enabling higher drawing height than that achieved in the conventional deep drawing process is introduced, and the principle of the process is explained in this ...
Cup drawingBlank-holder forcePunch forceFrictionA hydraulic short-stroke device was developed to draw 100mm diameter cups from 180mm diameter blanks, applying blank-holding forces and punch forces that are proportional to a pressure developed within the device itself. In an earlier paper, the ...
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The plastic instability of cup-drawing is usually measured by the limiting drawing ratio (LDR). A new and practically applicable equation for estimating the LDR in the cup-drawing of a cylindrical cup with a flat-nosed punch is derived using an integral technique based on the load-maximum prin...
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a decisive influence on maximum punch force and the deviations of die geometry within the given manufacturing tolerances have an inconspicuous influence on maximum punch force.If taking size effect on friction into account,the dimensionless design method for micro deep drawing process and die is valid...