Abstract: A barrel assembly for a composite structure includes a barrel of composite material, a first end ring, and a mid support. The barrel of composite material has a first end, an interior surface and an outer surface, and the first end ring is removably attached to the first end. The first end ring has a perimeter that is substantially congruent with the first end, and is configured to maintain a shape of the barrel. The mid support is removably disposed within the barrel, and has a plurality of spokes extending outwardly from a central hub to contact the interior surface, to maintain a shape of the barrel.

Abstract: A clamp and method of use may be configured to detect whether a clamp is properly secured to an object, and whether that proper securement is maintained. One embodiment of a clamp may include a first portion and a second portion. The relative positions of the first and second portions may be selectively adjusted using a positioner. A sensor assembly may be secured between said first and second portions to determine if the first portion engages the work piece with the proper force. Multiple clamps may be used on a single work piece, and those clamps may be in communication with a common controller to alert the user when any clamp experiences a force other than the force the user desires.

Abstract: A clamp device includes a support mechanism that supports a grip member when expanding the diameter thereof, a clamping hydraulic cylinder that can drive the grip member and a clamp rod axially forwards and backwards (up and down), and a main body member to which the grip member, the clamp rod, the support mechanism, and the clamping hydraulic cylinder are mounted, with the grip member, the clamp rod, and the support mechanism being positioned at one end portion of the body member, and with the common axis of the grip member and the clamp rod being offset from the axis of the clamping hydraulic cylinder in a direction orthogonal to the clamp rod.

Abstract: A communication receiver and a receiving method are disclosed. An analog front-end device samples a receiving signal and generates a sampled signal. A signal detector detects presence of the receiving signal according to the sampled signal. A symbol timing recovery (STR) unit determines an optimal symbol sampling point according to a zero-crossing point of the sampled signal when the receiving signal is present, and then generates a recovered symbol based on an optimally chosen sampled value according to the optimal symbol sampling point.

Abstract: A clamp device includes an annular grip member capable of being inserted into an hole in a workpiece and of gripping the inner circumferential surface of the hole, a clamp rod having a tapered shaft portion fitted inside the grip member and engaged therewith, a hydraulic cylinder capable of axially advancing and retracting the grip member and the clamp rod, and a clamp main body member. The clamp device is provided with seating surfaces formed upon the clamp main body member, on which the workpiece is seated, and a poor clamping detection mechanism that detects poor clamping, in the state in which the grip member is driven in its clamping direction by the hydraulic cylinder via the clamp rod, and the workpiece is in its state of being seated upon the seating surfaces.

Abstract: A clamp device includes a grip member, a clamp rod, and a hydraulic cylinder, and, by the grip member being inserted into an hole in a workpiece, it can grip the inner circumferential surface of the hole. The clamp device is provided with: a main body member; seating surfaces formed upon the main body member, upon which the workpiece is seated; a seating sensor that includes a pressurized air ejection hole opening to the seating surfaces; and a workpiece mounting surface that can receive and stop a workpiece at a position that is more advanced than the seating surfaces when the grip member is at an advanced position (its unclamped state), and that shifts together with the grip member during clamp operation when the grip member and the clamp rod shift towards retraction.

Abstract: A positioning and clamping apparatus, capable of positioning and clamping a panel material and removing the panel material from a locating pin under a state of releasing the clamping, is provided. A base having a contact surface contacting with the panel material is provided with the locating pin that penetrates through a through-hole of the panel material. A clamp arm moving between an escaping position and a clamping position is provided in a slit, and the clamp arm is moved between these positions by a reciprocating cam. When the clamp arm reaches the clamping position, the panel material is clamped by a clamp portion which is a tip of the clamp arm. A pusher driven by a pushing piston is provided inside the base, and the panel material is removed from the locating pin by the pusher.

Abstract: A positioning and clamping apparatus clamps a panel material by moving a clamp arm to a clamping position while the panel material positioned by a locating pin is supported by a workpiece supporting face of a workpiece support. An extruding member having a plurality of extruding rods protruding from the workpiece supporting face is slidably provided in the workpiece support, and the panel material is detached from the locating pin since the extruding member causes a tip face of the extruding rods to be moved to a carry-out position by the hollow piston. The extruding member is caused to protrude by a spring force up to a standby position located between the carrying-out position and the workpiece supporting position, thereby being pushed down up to the workpiece supporting position by the panel material.

Abstract: An intensified machinist vise for supporting and holding work pieces during the machining thereof. The intensified machinist vise includes an elongate housing having a top and a bottom, and also having a first end and a second end, and also includes a first jaw being securely mounted upon the elongate housing, and further includes a second jaw being rotatably and adjustably mounted upon the elongate housing, and also includes a jaw support assembly for supporting the second jaw upon the elongate housing, and further includes an actuator assembly for moving the second jaw toward and away from said first jaw.

Abstract: A rotating internal support for a large hollow structure can include a rigid central truss and two or more annular disks coupled to the truss by support arms. The annular disks can be axially spaced along the longitudinal centerline of the truss, and can be coupled to the support arms by guide rollers that allow the annular disks to rotate about a central axis. The internal support can also include support rods with contact pads that extend axially around the annular disks to contact and support the inner surface of the large hollow structure.

Abstract: A universal holding fixture assembly includes a plurality of linear actuators supported by the fixture and adapted to engage and support a workpiece relative to the fixture. A linear displacement member is supported by a housing and adapted to move between retracted and extended positions. An end effector assembly is operatively supported by the linear actuator and adapted to engage the workpiece when the linear displacement member is in its extended position. A sensor is operatively supported by the end effector assembly and is responsive to contact with the workpiece to establish a datum of the position of the linear actuator relative to the workpiece.

Abstract: A toggle lever clamp device for automobile body fabrication comprises a clamp housing (1) having a rectangularly shaped cross section wherein the cross-section is taken at a right angle to an axial direction of the housing. The housing is comprised of two parts (12, 13) and has a slot (19) on a rear side thereof that extends in the axial direction. The toggle lever clamp device further includes a cylinder (2) coupled to an end of the housing in the axial direction, a piston (6) axially located in the cylinder so that pressure can be exerted alternately on either side thereof, a piston rod (7) coupled to the piston (6) and extending axially through a part of the cylinder (2) and into a hollow space in the clamp housing (1); and a toggle lever joint arrangement (10) secured to a free end of the piston rod (7). An integral replaceable monitoring cassette (20) forms a cover in the area of a slot (19).