Drive mechanism for tool machines - has pulley running over two sets of rollers

摘要

The drive mechanism, esp. fortool-machines, has a pulley (11) running over rollers (1,3) pivot mounted on the fixed and/or movable machine part (9,10). The pulley (11) runs over two first spaced-apart rollers (1,3) and then over two spaced-apart second rollers (5,7). The ends (F1,F2) of the pulley are fixed behind the second rollers (5,7) on one of the two machine parts (9). The distance between the second rollers (5,7) is less than the space between the first rollers (1,3) one of which (1) is driven. USE/ADVANTAGE - The drive mechanism has the transmission ratio situated between the drive rollers rotational speed and the thrust speed of the movable part.