Vorrichtung an einer Presse zum Verstellen der Hübe eines Arbeitsstößels und einer Gegenschwingmasse

摘要

The invention relates to an apparatus on a press with an eccentric shaft for adjusting the strokes of a working pusher rod and a counter weight by means of adjustable cam/eccentric bush pairs, the eccentric bushes being made releasable and fixable on the cams in the direction of rotation by the fact that connection is in each case by means of a press fit with cylindrical fitting surfaces, which fit can be released by introducing pressure oil. …An apparatus of this type is to be constructed in such a way that it permits a narrow design of the press with a relatively short eccentric shaft. …This is achieved by arranging the cams (8, 9) immediately alongside one another on the eccentric shaft (4) and by mutually connecting in a rotatable manner the eccentric bushes (10, 14) via radial discs (12) having radial slots (13) and bolts (15) which engage therein. The strokes are adjusted by rotating the eccentric shaft (4) when the press fits have been released and the eccentric bushes (10, 14) have been locked. ……