Work on hydraulic presses is defined by a static forging force. This force may have in special cases of forging properties of dynamic and shock load. Commonly used hydraulic presses can use speed-forging with speed up to 180 strokes per minute. Our goal is to compare different types of frame designs used for hydraulic forging presses. Result is determination of the suitability of each supporting structures for these special operations. Comparing is made using FEM modal analysis. The performed modal analysis show needs for lowering of first critical natural frequency. An overview of these frequencies is shown in attached tables.
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