Adjustable excentric drive for a machine tool, in particular for superfinishing or honing

摘要

The drive has a crank pin (21) connected with a shaft (1), where radial distance between the crank pin and a rotary axis (19) of the shaft is adjusted. An adjusting ring is arranged coaxial to the shaft and rotated relative to the shaft. The crank pin is coupled with a linear guide (5) and guide ribs of the adjusting ring in a form-fit manner. The crank pin has rollers (31) encompassing the ribs in a radial direction in a form-fit manner. The adjusting ring is connected with a shaft (57), which is arranged coaxial to the shaft (1).