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A forming press, commonly shortened to press, is a machine tool that changes the shape of a workpiece by the application of pressure. Presses can be classified according to * their mechanism: hydraulic, mechanical, pneumatic; * their function: forging presses, stamping presses, press brakes, punch press, etc. * their structure, e.g. Knuckle-joint press, screw press * their controllability: conventional vs. servo-presses ==An example of peculiar press structure: shop press== A simple frame, fabricated from steel, containing a bottle jack or simple hydraulic cylinder. Good for general-purpose work in the auto mechanic shop, machine shop, garage or basement shops, etc. Typically 1 to 30 tons of pressure, depending on size and expense. Classed with engine hoists and engine stands in many tool catalogs. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Machine press」の詳細全文を読む スポンサード リンク
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