Patent ID: 8316729
Filing Date: 2012-11-27
Classification: F16H,Y10T

Abstract:
1. A linear unit, comprising: a guide tube made of a sheet metal strip and open at its axial ends, which is bent about a longitudinal axis of the guide tube, and having a longitudinal groove; end pieces for closing the axial ends in one-to-one correspondence, each end piece having a pin-shaped projection for insertion into a corresponding axial end and a collar adjacent to the projection and bearing upon an end face of the guide tube, a drive unit supported in the guide tube and including a threaded spindle, and a spindle nut mounted on the threaded spindle; and end pins forming separate parts and having each an end in form of a sleeve, said end pins connected to opposite ends of the threaded spindle on one-to-one correspondence for rotatable support of the threaded spindle in the end pieces, a guide carriage supported by the drive unit and structured to carry a workpiece or a tool, wherein one member selected from a group consisting of the spindle nut and the guide carriage is guided in the longitudinal groove to allow movement in a direction of the longitudinal axis but is prevented from executing a rotation, wherein the sleeve has at least one protuberance for holding the sleeve in fixed rotative engagement on the threaded spindle; said at least one protuberance being introduced from the outer surface area of the sleeve and deforming thread turns.