| 摘要 |
PROBLEM TO BE SOLVED: To improve the durability of a press machine in which the bottom dead center position of a slide can be adjusted. SOLUTION: The press machine includes: a crankshaft rotatably supported by a frame, and having an eccentric shaft part; a connection member connected to the eccentric shaft part; a first link member receiving the crankshaft so as to allow the rotation of the crankshaft, and connected to the connection member via a first pivot arranged parallel to the crankshaft; a second link member whose one end is connected to the first link member via a second pivot arranged with intervals from the first pivot and parallel to the first pivot; a slide movably guided in a vertical direction, and holding a mold, and connected to the other edge of the second link member via a third pivot arranged parallel to the first pivot; a fourth pivot arranged at intervals from the first and second pivots and parallel to the first pivot, and coupled to the first link member; and a positioning mechanism displaceably positioning the fourth pivot. COPYRIGHT: (C)2011,JPO&INPIT
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