Method of determining the diameter of a hole in a workpiece
AssigneeSiemens Aktiengesellschaft
InventorNigel Wilbraham
Life of this patent
Estimating the term…
Abstract
A method of determining the diameter of a hole extending from a surface of an electrically conducting workpiece into or through the workpiece 1 is provided. The hole is defied at the workpiece's surface by an edge of diameter to be determined. For determining the diameter, the workpiece is electrically charged so that discharge occurs at the edges. The discharge current is measured and the diameter of the hole is determined from the measured discharge current.
Claims17
A method of determining the diameter of a hole extending from a surface of an electrically conducting workpiece into or through the workpiece, the hole being delimited at the workpiece's surface by an edge of diameter to be determined, comprising:
- electrically charging the workpiece so that a discharge current occurs at the edge;
- measuring the discharge current;
- and
- determining the diameter of the hole from the measured discharge current.
Dependencies are inferred from the claim text.