Patent ID: 6071012
Filing Date: 2000-06-06
Classification: B23Q,F16C

Abstract:
A straight-line mechanism for a slidable carriage in machine tools, the straight-line mechanism comprising:at least one straight, essentially cylindrical guiding member on which a carriage is guided along a longitudinal direction of the guiding member,running surfaces between the guiding member and the carriage which have mutually coordinated profiles,wherein the profile of the guiding member has at least three wedges which radially rise over a first imaginary cylinder surface on the guiding member, the three wedges are each offset by equal angles from one another in the circumferential direction and extend in the longitudinal direction,wherein the profile assigned to the carriage has correspondingly arranged wedges which radially rise inwardly from a second imaginary cylinder surface in the carriage, the second imaginary cylinder surface having a slightly larger diameter than the first imaginary cylinder surface,wherein a relative angular position between the guiding member and the carriage allow for slidable motion in the longitudinal direction relative to each other, andwherein the profile assigned to the carriage is arranged in a bush which is disposed to the carriage to be rotatable about the longitudinal axis of the guiding member.