| 摘要 |
PURPOSE:To make a slide bottom dead center and stroke length adjustable with a common mechanism by arranging a link mechanism and slider position adjusting mechanism. CONSTITUTION:A power transmission device of press machine is constituted by arranging a connecting link 32, which is connected to a crank shaft 16 and reciprocates as it turns, a first slider 34, which reciprocates to the first direction for press machine frames 12, 14 and is axially connected to the connecting link 32, a first link mechanism 36, which has a pair of links connected so as to bend and stretch with following a reciprocating motion of the connecting link 32, a second slider 40, which is placed on frame to displace to the first direction, and the mechanism to adjust its position. Thus, by adjusting a position of the second slider 40 on the first direction, the bend and stretch range of the first link mechanism is not shifted in parallel, but the bending angle of the first link mechanism is varied. |
