Patent ID: 6282777
Filing Date: 2001-09-04
Classification: H05K,Y10T

Abstract:
A component placement machine comprisinga machine frame (1, 20) over which printed circuit boards (8, 38) can be transported and on which the printed circuit boards can be fixed, which machine frame (1, 20) is provided with a guide member (3, 21) along which a slide (2, 22) can be moved,a placement head (4, 36) for placing components (9, 37) on the printed circuit boards, which placement head is coupled to the slide,a linear motor (5, 31) for driving the slide (2, 22) along the guide member (3, 21) in a drive direction (P, Y), which motor has a stationary part (7, 25) and a movable part (6, 24), which movable part is connected to the slide,characterized in that the stationary part (7, 25) of the motor (5, 33) is attached to a force frame (10, 27) which is dynamically disconnected with respect to the machine frame (1, 20, characterized in that the force frame (10, 27) is dynamically disconnected with respect to the machine frame (1, 20), only in the drive direction (P, Y) of the slide (2, 22), and further characterized in that the force frame (10, 27) is dynamically disconnected with respect to the machine frame (1, 20), only in the drive direction (P, Y) of the slide (2, 22), and further characterized in that the force frame (10, 27) is coupled to the machine frame by means of leaf springs (11, 26) in such a manner that the leaf springs (11, 26) exhibit a small rigidity in the drive direction (P, Y) of the slide (2, 22) and a great rigidity in the other directions.