A screw fastening method includes reversely rotating a shaft part of a fastening tool in a direction of loosening one of an external thread and an internal thread, which is engaged with the shaft part, while one of the external thread in a non-screwed state and the internal thread in a non-screwed state, which is engaged with the shaft part, is pressed against the other thread, detecting collisions between thread ridges of the external thread and the internal thread using a sensor while the shaft part remains rotated reversely, determining whether or not a time interval between collisions detected by the sensor matches a theoretical cycle of collisions calculated from rotation speed of the shaft part, and fastening the external thread and the internal thread to each other by normally rotating the shaft part when it is determined that the time interval matches the theoretical cycle.

A tapping screw fastening jig includes a guide component and a positioning component. The guide component includes a first base member provided with a guide hole portion through which a tapping screw is insertable at a position corresponding to each of pilot holes in a use state of the tapping screw fastening jig. The positioning component includes a second base member, and at least two positioning pins provided on the second base member, where the at least two positioning pins are provided at positions corresponding to at least two of the pilot holes. Each of the at least two positioning pins includes a first outer diameter portion that is insertable into the pilot hole, and a second outer diameter portion that is connected to the first outer diameter portion on a base end side of the first outer diameter portion and is insertable through the guide hole portion.

A tapping screw fastening jig includes a guide component and a positioning component. The guide component includes a first base member provided with a guide hole portion through which a tapping screw is insertable at a position corresponding to each of pilot holes in a use state of the tapping screw fastening jig. The positioning component includes a second base member, and at least two positioning pins provided on the second base member, where the at least two positioning pins are provided at positions corresponding to at least two of the pilot holes. Each of the at least two positioning pins includes a first outer diameter portion that is insertable into the pilot hole, and a second outer diameter portion that is connected to the first outer diameter portion on a base end side of the first outer diameter portion and is insertable through the guide hole portion.

A mechanical assembly to precisely position large objects and align them to be joined with other objects with precision. The assembly does not require power to operate and can therefore be used in a variety of remote and harsh locations.

A screw fastening process can be performed by reliably positioning a screw in a screw hole while suppressing a decrease in the degree of freedom of movement of a screw fastening device. Provided is a screw guide device that guides a screw to a screw hole. The screw is fastened by a screw fastening device to the screw hole formed in a workpiece to be fastened to be fastened. The screw guide device includes a guide device body provided at a support that supports the workpiece to be fastened, and also includes a guide member that is provided in the guide device body and that is openable and closable in a radial direction orthogonal to a central axis of a shaft section of the screw. The guide member forms a screw insert through which the shaft section is inserted when the guide member is in a closed state.

A screw fastening process can be performed by reliably positioning a screw in a screw hole while suppressing a decrease in the degree of freedom of movement of a screw fastening device. Provided is a screw guide device that guides a screw to a screw hole. The screw is fastened by a screw fastening device to the screw hole formed in a workpiece to be fastened to be fastened. The screw guide device includes a guide device body provided at a support that supports the workpiece to be fastened, and also includes a guide member that is provided in the guide device body and that is openable and closable in a radial direction orthogonal to a central axis of a shaft section of the screw. The guide member forms a screw insert through which the shaft section is inserted when the guide member is in a closed state.

Component-locating templates or masks for use with positioning fluid-flow components on monolithic ceramic substrates are provided, as well as techniques for the manufacture of such templates.

Component-locating templates or masks for use with positioning fluid-flow components on monolithic ceramic substrates are provided, as well as techniques for the manufacture of such templates.

An insertable fastener installation apparatus for a flat substrate has a thickness, T. A roller press station is used to press T-nuts into holes in the substrate. An optical vision system detects the location of the holes in the moving substrate and aligns the t-nuts with the holes. A computer controlled pick and place robot takes T-nuts from an escapement of a hopper feed system and aligns, but does not fully insert, the t-nuts in the substrate. A conveyor system feeds the substrates through the optical vision system, the pick and place robot station and the roller press station. A first roller is spaced apart from a second roller by a gap in the roller press station and the gap is less than the thickness of the substrate. The hopper feed system includes a bulk hopper, a bowl, a track and an escapement.

An insertable fastener installation apparatus for a flat substrate has a thickness, T. A roller press station is used to press T-nuts into holes in the substrate. An optical vision system detects the location of the holes in the moving substrate and aligns the t-nuts with the holes. A computer controlled pick and place robot takes T-nuts from an escapement of a hopper feed system and aligns, but does not fully insert, the t-nuts in the substrate. A conveyor system feeds the substrates through the optical vision system, the pick and place robot station and the roller press station. A first roller is spaced apart from a second roller by a gap in the roller press station and the gap is less than the thickness of the substrate. The hopper feed system includes a bulk hopper, a bowl, a track and an escapement.