Patent ID: 8725446
Filing Date: 2014-05-13
Classification: G01B

Abstract:
1. Method for determining the shape of a pin having a pin axis during a machining process, comprising the following steps: a) measured values representing the shape of the pin are determined and stored by use of a measuring sensor, the measured values being obtained during a machining process, during which the pin performs an orbital rotation about a rotational axis that is parallel to the pin axis, and a measuring prism contacting the pin being used, the measuring prism being arranged on the measuring sensor; b) approximate values representing the shape of the pin are determined during a machining process by a calculation unit including a processor; c) modeled measured values are calculated using the approximate values during a machining process by the calculation unit; d) the measured values found by use of the measuring sensor are compared to the modeled measured values and difference values are calculated during a machining process by the calculation unit, step d) including the following substeps: in which: r ε k e) new approximate values are calculated from the difference values during a machining process for an optimized approximation to the shape of the pin by the calculation unit; f) steps c) through e) are iterated during a machining process until a termination condition is met; and g) the approximate values in effect when the terminating condition is met are stored as the shape of the pin during a machining process.