Inventors:
Scott Hal Kozin - Radnor PA 19087
Joseph C. McGinley - Philadelphia PA 19128
Scott T. Porter - Philadelphia PA 19103
International Classification:
B23B 4900
US Classification:
33833, 33638, 175 45, 433 27, 408 8, 408 16
Abstract:
A drill bit penetration measurement system and method for determining a depth of penetration of a rotating drill bit in a bore. A first sensor outputs a first signal representative of a displacement of the leading edge of the drill bit in the bore. A second sensor outputs a second signal representative of a force applied to the leading edge of the drill bit. A processor outputs a third signal representative of the depth of penetration of the leading edge of the drill bit when the leading edge of the drill bit passes from a first medium having a first density to a second medium having a second density. The third signal is based on the first and second signals.