Probe chord error compensation
AssigneeGeneral Electric Company
InventorR. David Hammerle
Life of this patent
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Abstract
Probe chord error compensation is provided in a machine tool including a rotary member for supporting a work piece and a probe having a path of travel. The compensation is accomplished by using the probe to measure an observed diameter of the work piece and then determining the crossover error of the machine tool. The observed diameter and the crossover error are then used to compute the work piece's actual diameter, thereby compensating for any probe chord error.
Claims11
In a machine tool including a rotary member for supporting a work piece and a probe having a path of travel, a method of compensating for probe chord error comprising the steps of:
- using said probe to measure an observed diameter of said work piece;
- determining said machine tool's crossover error;
- and
- computing an actual diameter of said work piece from said observed diameter and said crossover error.
In a computer numerically controlled machine tool including X, Y and Z coordinate axes, a rotary member for supporting a work piece and having an axis of rotation, a probe moveable along said X and Z axes, and a processor, a method of compensating for probe chord error comprising the steps of:
- moving said probe along said X-axis to measure an observed diameter of said work piece;
- storing said observed diameter in said processor;
- determining said machine tool's crossover error;
- storing said crossover error in said processor;
- and
- computing an actual diameter of said work piece from said observed diameter and said crossover error.
Dependencies are inferred from the claim text.