Centreless cylindrical grinding machine for grinding workpieces in rod form and method for the centreless cylindrical grinding of workpieces in rod form

A method for the centerless cylindrical grinding of workpieces in rod form with a cylindrical outer contour using the throughfeed grinding process, the method comprising:

• imparting to the rod-shaped workpiece movement in a direction of its longitudinal axis to run the workpiece through a widening grinding gap which is formed by at least one set of rotating regulating wheels and at least one set of rotating grinding wheels and by a work rest blade;
• and
• fixing a position of the workpiece in a radial direction in the widening grinding gap according to a reference plane through rotational and drive axes of the regulating and grinding wheels, the workpiece longitudinal axis being situated such that it is moved away from said reference plane within a part region of the grinding gap between the reference plane and a supporting face of the work rest blade;
• and wherein
• regulating wheels of the set of regulating wheels are situated at axial spacings from one another on a spindle which extends parallel to the longitudinal axis of the workpiece and set the workpiece in rotation;
• the grinding wheels of the set of grinding wheels are arranged at axial spacings from one another on another spindle which extends parallel to the longitudinal axis of the workpiece, and grind the workpiece;
• and
• the regulating and grinding wheels are arranged such that they are offset in the axial direction with respect to one another and are adjacent in the radial direction so closely that the regulating wheels project into the axial spaces between the grinding wheels and the grinding wheels project into the axial spaces between the regulating wheels;
• and
• the regulating wheels and grinding wheels have diameters which increase in a stepped manner in a throughfeed direction of the workpiece and the work rest blade is adapted with its supporting face to the diameter of the workpiece, which diameter decreases in the direction of the longitudinal axis of the workpiece.