| 摘要 |
<p>A wedge device for a press for controllably exerting high amounts of force in a clamping operation during a semiconductor packaging process and for facilitating a linear force output in relation to its input. The wedge device is powered by a servo motor (10) which is coupled to a planetary screw (19) by a set of pulleys (14) and a timing belt (15). The screw is mated with a nut which is prevented from rotating so that the rotation of the screw causes the nut to move in a linear direction. Metal extensions (27, 30) join the nut to a bottom wedge (50) such that the wedge (50) moves together with the nut. Slidably disposed on top of the bottom wedge (50) is a block bearing (60) firmly attached to a complementary wedge (65). The complementary wedge (65) is free to move in a vertical direction but not in a horizontal direction. As the bottom wedge moves in a horizontal direction, the complementary wedge moves in a vertical direction. The complementary wedge is placed underneath a press to provide the clamping force necessary for a semiconductor packaging operation.</p> |
