Abstract: In one example, an adapter assembly for a system for cold working a portion of a metal layer of a metal/composite structure is provided. The portion being cold worked may surround a hole in a structure that includes the metal layer and a non-metal layer. In some examples, the adapter assembly includes a shim adapter housing including a face wall, having a first aperture that is larger than the hole, and a side wall, extending from the face wall. A cavity is at least partially delimited by the face wall and the side wall. The adapter assembly also includes a shim, dimensioned to fit within the cavity. The shim has a second aperture that is larger than the first aperture. Other embodiments may be described.

Abstract: A method and apparatus are present for removing a blind fastener from a structure. A first hole is drilled in a guide located around a center of a head of a core bolt in a body of the blind fastener to form a pilot hole. A second hole is drilled in the pilot hole in the head of the core bolt. The head of the core bolt is separated from the shaft of the core bolt. The core bolt is separated from the body. The core bolt is moved out of the body after the core bolt has been separated from the body. A head of the body is separated from a shaft of the body. The shaft of the body is moved out of the structure.

Abstract: Apparatus and methods associated with a center finder and marking tool are disclosed. A center finder and marking tool device includes a base that is configured to be positioned on a work piece surface. The base includes a bore hole. A body is disposed inside the bore hole and rotationally coupled to the base, wherein the body includes a first bore tunnel and a second bore tunnel. An optical center finder is disposed inside the first bore tunnel, and a marking tool is disposed inside the second bore tunnel.

Abstract: A method and apparatus are present for removing a blind fastener from a structure. A first hole is drilled in a guide located around a center of a head of a core bolt in a body of the blind fastener to form a pilot hole. A second hole is drilled in the pilot hole in the head of the core bolt. The head of the core bolt is separated from the shaft of the core bolt. The core bolt is separated from the body. The core bolt is moved out of the body after the core bolt has been separated from the body. A head of the body is separated from a shaft of the body. The shaft of the body is moved out of the structure.

Abstract: Apparatus and methods associated with a center finder and marking tool are disclosed. A center finder and marking tool device includes a base that is configured to be positioned on a work piece surface. The base includes a bore hole. A body is disposed inside the bore hole and rotationally coupled to the base, wherein the body includes a first bore tunnel and a second bore tunnel. An optical center finder is disposed inside the first bore tunnel, and a marking tool is disposed inside the second bore tunnel.

Abstract: In a valve disposed between a fluid supply and a socket of a chuck and configured to regulate the flow of the fluid to the socket. There is a seal screw for modulating a preload tension. This seal screw has a first sealing surface. The valve further includes a second sealing surface in opposing relation to the first sealing surface and an elastomer seal ring disposed between the first sealing surface and the second sealing surface. The valve is configured to form a seal between the first sealing surface, the second sealing surface, and the elastomer seal in response to a force less than or equal to the preload tension being exerted in line with the seal screw. In this manner, the valve is configured to allow the flow of the fluid between the first sealing surface and the second sealing surface in response to a force exceeding the preload tension being exerted in line with the seal screw.

Abstract: A fluid inducer having an inducer valve operable to open in response to a load is evaluated by an evaluation device. This device includes a fluid conduit for pressurizing the fluid inducer with a fluid and a pressure sensor that senses the pressure in the fluid conduit. In addition, the device includes an actuator for applying the load to the fluid inducer and a load sensor that determines the load in response to the sensed pressure.

Abstract: A hand-held pneumatic-hydraulic drill unit employs modular drilling and clamp-up assemblies to perform a complete drilling cycle. The drilling cycle consists of: (1) clamping the drill unit to a work piece and/or a template that positions the drill unit relative to the workpiece; (2) advancing a rotating tool bit to perform the desired machining operation; (3) withdrawing the tool bit from the machined opening; and (4) releasing the clamping mechanism that secures the drill unit to the workpiece. The drill unit includes a pneumatic motor subassembly that is advanced toward and retracted from a workpiece by a hydraulically actuated feed cylinder. The motor subassembly and feed cylinder are axially aligned with one another. The clamp-up assembly of the drill unit also includes a clamp cylinder that is activated solely by hydraulic pressure. A modular, pneumatically actuated hydraulic pump is mounted on the drill unit and supplies pressurized hydraulic fluid to the feed and clamp cylinders.