Patent ID: 8360819

Claim:
Method for grinding a machine component having at one longitudinal axial end a journal and at its other longitudinal axial end an interior recess having a rotationally symmetrical surface, comprising rotating the machine component about a longitudinal axis thereof, grinding exterior surfaces thereof with a first grinding wheel and grinding said surface of said interior recess with a second grinding wheel, a workpiece headstock, a tailstock, and at least one steady being provided for clamping said machine component during grinding, wherein said grinding method comprises the following sequential steps: a) effecting a first clamped condition in which a chuck of said workpiece headstock surrounds said journal of said machine component with releasable clamping jaws and at the same time a centering tip of the workpiece headstock engages an end face of said journal, while a tip of a sleeve of the tailstock engages in said interior recess of said machine component; b) in the first clamped condition, with the first grinding wheel grinding a seat for the steady on an exterior circumference of said machine component and grinding predetermined areas on surfaces of the exterior circumference of said machine component with the exception of said journal; c) effecting a second clamped condition in which said machine component is supported at said steady seat by said steady and said tailstock is moved far enough away from said machine component in an axial direction of the machine component that said second grinding wheel can be inserted into said interior recess of said machine component upon being moved from an idle position; d) in the second clamped condition, moving the second grinding wheel from the idle position, inserting the second grinding wheel is said interior recess and grinding therewith said rotationally symmetrical surface of said interior recess; e) returning said second grinding wheel to its idle position, rendering said steady is inactive, and reinstating the first clamped condition; f) effecting a third clamped condition in which said clamping jaws of said chuck of said workpiece headstock are released from said journal and drawn axially into said chuck such that said machine component is then clamped only between the centering tip of said workpiece headstock and said tailstock sleeve; and g) in the third clamped condition, with the first grinding wheel grinding a circumference of said journal.