Patent ID: 8800129
Filing Date: 2014-08-12
Classification: F16H,Y10T

Abstract:
1. A method for producing a spindle nut for a ball screw, the spindle nut having a ball groove for balls incorporated at an inner periphery of the spindle nut, the ball groove extending over at least one thread and extending around a rotational axis of the spindle nut along a helical line, the method comprising: using a single tool to form the ball groove and a ball inlet; moving the tool radially outwardly in order to remove more material from the spindle nut to form the ball inlet, the moving step beginning at a first point of the ball groove and ending at a second point of the ball groove, the locations of the first and second points each depending on a relative rotary progress of the tool in reference to the spindle nut; reversing the radially outward movement of the tool, and further processing of the ball groove, wherein the moving step and/or the reversing the radially outward movement step form the ball inlet; and forming an opening that extends to the ball inlet, the opening being located at an outer periphery of the spindle nut between the first and second points.