Abstract: An assembly for guiding a drill bit of a drill assembly comprises a chassis and a centering bushing, comprising an exterior conical portion and a central opening. The assembly further comprises a vacuum-cup bracket, coupled to the chassis and adjustably positionable relative to the chassis along a second axis. The assembly also comprises vacuum cups, coupled to the vacuum-cup bracket. The assembly additionally comprises a pressure foot, coupled to the chassis at the first end of the chassis and adjustably positionable relative to the chassis along the second axis.

Abstract: An assembly for guiding a drill bit of a drill assembly comprises a chassis and a centering bushing, comprising an exterior conical portion and a central opening. The assembly further comprises a vacuum-cup bracket, coupled to the chassis and adjustably positionable relative to the chassis along a second axis. The assembly also comprises vacuum cups, coupled to the vacuum-cup bracket. The assembly additionally comprises a pressure foot, coupled to the chassis at the first end of the chassis and adjustably positionable relative to the chassis along the second axis.

Abstract: One example of the disclosure relates to an apparatus for testing adhesion of a seal to a surface. The apparatus includes a first member and a second member movable relative to the first member. The second member includes a seal-contact member. The apparatus also includes means for biasing the first member and the second member relative to each other with a biasing force and an indicator on one of the first member or the second member.

Abstract: A tool for removing a coating from at least one of a surface and a fastener head that is generally flush with the surface is provided. The tool includes a first scraper configured to abrasively engage the coating on at least one of the surface and the fastener head and a second scraper sized to abrasively engage the coating in a recess in the fastener head. The first scraper is rotatable relative to the fastener head and the second scraper is rotatable within the recess. The first scraper and the second scraper are translatable relative to each other.

Abstract: One example of the disclosure relates to an apparatus for testing adhesion of a seal to a surface. The apparatus includes a first member and a second member movable relative to the first member. The second member includes a seal-contact member. The apparatus also includes means for biasing the first member and the second member relative to each other with a biasing force and an indicator on one of the first member or the second member.

Abstract: A system for preventing the performance of an out-of-sequence reaming operation during the machining of holes in a lamination of fiber-reinforced plastic material. The system automatically stops or inhibits a reaming operation if a sensing tip of the reamer encounters an incompletely drilled pre-hole or blank material (i.e., no pre-hole) instead of a fully drilled pre-hole. The system does not require any human intervention to inhibit the reaming operation. In one embodiment, the human or operator cannot re-start the reaming process until the machine tool or reaming equipment is reset. In some cases the reset may require manual intervention.

Abstract: An improved vacuum drilling system and drill bit includes a generally hollow vacuum drill bit with one or more chip inlets arranged proximate to one or more cutting surfaces. The drill bit also includes grooves along its exterior. When the drill bit is guided by a bushing or guide hole, the grooves serve to reduce the friction therebetween. The grooves can also convey air for cooling and improved chip collection.