Pneumatic drill system and foreign object debris collection drill attachment

A pneumatic drill system comprising:

• a pneumatically-driven drill having a drill body and a drill bit;
• and
• a foreign object debris (FOD) collection drill attachment comprising:
• a
• drill guide bushing holder including:
• an inlet channel having a first cross-sectional area,
• an outlet channel, having a second cross-sectional area, wherein the first cross-sectional area is smaller than the second cross-sectional area, and
• a holder center channel having a first opening, a second opening, a first region, and a second region, wherein the first region extends from the first opening to the second region and the second region extends from the first region to the second opening, wherein the inlet channel and the outlet channel each open into the second region of the holder center channel,
• a chip breaker bushing positioned within the holder center channel of the drill guide bushing holder, the chip breaker bushing comprising a cylindrical wall having a first circumference about a center axis of the chip breaker bushing, wherein the cylindrical wall forms a bushing center channel extending along a length of the center axis of the chip breaker bushing, wherein the drill bit extends through and is rotatable within the bushing center channel, wherein the cylindrical wall comprises an end protrusion positioned within the second region of the holder center channel such that FOD from a workpiece being drilled by the drill bit is broken into smaller chips by striking the end protrusion while the drill bit rotates within the bushing center channel,
• an air supply line having a first end fluidly coupled with the inlet channel and a second end fluidly couplable to a pneumatic pressure source for operation of the drill, such that air for actuating the drill bit is also passed into the inlet channel via the air supply line,
• a chip evacuation line fluidly coupled with the outlet channel, wherein a Venturi effect between the inlet channel and the outlet channel is configured to pull the smaller chips of FOD away from the drill bit in the second region of the holder center channel and through the chip evacuation line, and
• a chip collection hopper fluidly coupled with the chip evacuation line and configured for collecting the smaller chips of FOD therein.

A foreign object debris (FOD) collection drill attachment comprising:

• a drill guide bushing holder comprising:
• an inlet channel having a first cross-sectional area,
• an outlet channel, having a second cross-sectional area, wherein the first cross-sectional area is smaller than the second cross-sectional area, and
• a holder center channel having a first opening, a second opening, a first region, and a second region, wherein the first region extends from the first opening to the second region and the second region extends from the first region to the second opening, wherein the inlet channel and the outlet channel each open into the second region of the holder center channel;
• a chip breaker bushing positioned within the holder center channel of the drill guide bushing holder, the chip breaker bushing comprising a cylindrical wall having a first circumference about a center axis of the chip breaker bushing, wherein the cylindrical wall forms a bushing center channel extending along a length of the center axis of the chip breaker bushing, wherein the bushing center channel has sufficient cross-sectional area such that a drill bit of a drill fits therethrough and is rotatable therein;
• an air supply line having a first end fluidly coupled with the inlet channel and a second end fluidly couplable to a pneumatic pressure source for operation of the drill, such that pneumatic pressure for actuating the drill bit is also passed into the inlet channel via the air supply line;
• a chip evacuation line fluidly coupled with the outlet channel, wherein a Venturi effect between the inlet channel and the outlet channel is configured to pull FOD away from the drill bit in the second region of the holder center channel and through the chip evacuation line;
• a chip collection hopper fluidly coupled with the chip evacuation line and configured for collecting the FOD therein;
• and an air manifold with an inlet fluidly couplable to the pneumatic pressure source, a first outlet configured to be fluidly coupled with the drill for actuating the drill bit, and a second outlet fluidly coupled with the air supply line.