Patent ID: 8161873
Filing Date: 2012-04-24
Classification: B30B

Abstract:
1. A servo press comprising: (a) a multi-toggle mechanism operable to move a slide up and down, wherein an upper die is to be fixed to a lower surface of the slide, wherein the multi-toggle mechanism includes three or more toggles generating a force amplifying effect by a plurality of links; and (b) a toggle driving mechanism provided on a crown located to an upper side of the slide and driving the multi-toggle mechanism, wherein the plurality of links of the multi-toggle mechanism include a first link and a second link rotatably connected between respective first ends, a third link in which a first end is rotatably connected to a rotatably connected point between the first link and the second link and a second end of the third link is guided along a vertical line, and a fourth link in which a first end is rotatably connected to the second end of the third link, and a second end of the first link is rotatably connected to the slide, and a second end of the second link is rotatably connected to the crown, wherein the toggle driving mechanism has a direct acting portion linearly reciprocating in a horizontal direction, and the direct acting portion is rotatably connected to a second end of the fourth link, and wherein the third link and the fourth link are operated so that the first link and the second link bend and stretch working with the linear reciprocation of the direct acting portion of the toggle driving mechanism.