A mask assembly includes a mask frame having frame openings formed thereon, and a plurality of unit masks fixed to the mask frame. The respective unit masks extend in a first direction, and at least one of the plurality of unit masks includes at least one of a one sided projection projecting to one side thereof and another sided projection projecting to another side thereof, at both end portions of the unit mask, in a second direction that crosses the first direction.

A moving mechanism relatively moves a machining head emitting a laser beam, with respect to a sheet metal along a surface of the sheet metal. A beam vibrating mechanism vibrates the laser beam for irradiation on the sheet metal in a predetermined vibration pattern, while the machining head is relatively moved by the moving mechanism. A vibration control section controls the beam vibrating mechanism to progressively reduce an amplitude of the vibration pattern from a first position to a corner portion when the machining head moves toward the corner portion and reaches the first position before the corner portion by a predetermined distance, and progressively increase the amplitude of the vibration pattern until the machining head reaches a second position ahead of the corner portion by the predetermined distance from the corner portion, at a time of producing a product having the corner portion.

A manufacturing fixture includes a rigid base defining a control plane. A first cone locator pin has a first longitudinal axis. The first cone locator pin is connected to the rigid base with the first longitudinal axis orthogonal to the control plane to engage a complementary locating aperture defined in a workpiece. The first cone locator pin engages the complementary locating aperture to locate the workpiece and constrain translation of the workpiece with respect to the control plane. A second cone locator pin has a second longitudinal axis. The second cone locator pin is connected to the rigid base with the second longitudinal axis orthogonal to the control plane to engage a complementary locating hole defined in a workpiece. The second cone locator pin engages the complementary locating hole to locate the workpiece and prevent rotation of the workpiece about the first longitudinal axis.

Scarfing machine (1) for scarfing hot and cold work pieces (2), such as slabs, blooms and billets made from steel in and downstream of continuous casting plants with a roller table (3) arranged in the direction of transport of the work piece, on which the work piece (2) to be scarfed can be moved back and forth. The scarfing machine (1) is set up in a gap (4) formed in the roller table (3) which has a U-shaped beam (7) with a scarfing unit (10) in the form of a rack of manifolds arranged crosswise to the roller table (3). The height of the burner beam (7) can be adjusted and it can be pivoted approximately 180° on a horizontal axis (8) around the top, bottom and cut sides of the work piece (2) by means of a swivelling drive (6) while the work piece is moved back and forth.

A metal sheet holding device for manufacturing a pattern mask used in manufacturing processes of a flat panel displays include a first holder and second holder. The first holder includes an adhesive layer contacting edge portions of a metal sheet, and a first frame supporting the metal sheet using the adhesive layer. The second holder includes a second frame below the first frame, a supported plate positioned at the center of the second frame, and an adhered unit positioned between the central portion of a metal sheet and the supported plate. The adhered unit generates an electrostatic force or a magnetic force to hold the central portion of the metal sheet.

A vacuum-based weld fixture includes a first work piece support for supporting a first work piece and a second work piece support for supporting a second work piece. The first work piece support may be slidable with respect to the second work piece support, and configured to supply a vacuum to the first work piece via at least one opening formed in a work piece support surface. The weld fixture includes a gage bar for aligning the first and second work pieces. Reduced pressure created by a vacuum source may be communicated to the opening in the work piece support surface, thereby holding the first work piece in place while the first work piece is aligned against the gage bar prior to welding.

A substrate stacking apparatus that stacks first and second substrates on each other, by forming a contact region where the first substrate held by a first holding section and the second substrate held by a second holding section contact each other, at one portion of the first and second substrates, and expanding the contact region from the one portion by releasing holding of the first substrate by the first holding section, wherein an amount of deformation occurring in a plurality of directions at least in the first substrate differs when the contact region expands, and the substrate stacking apparatus includes a restricting section that restricts misalignment between the first and second substrates caused by a difference in the amount of deformation. In the substrate stacking apparatus above, the restricting section may restrict the misalignment such that an amount of the misalignment is less than or equal to a prescribed value.

A laser welding system is provided. The laser welding system includes a tooling assembly for securing a conductor against a workpiece. The tooling assembly includes a spring assembly for pressing the conductor against the workpiece. The laser welding system also includes a laser source for providing laser energy for selectively welding the conductor to the workpiece.

A plasma computer numerically controlled (CNC) cutting machine is controlled by a computer such as a personal computer capable running an operating system and software programs. In an embodiment, the computer executes a CNC program to control movement of a plasma torch to cut parts from a workpiece while a spectrometer determines an emissions spectra of light emitted as the torch cuts the workpiece. The spectrometer cooperates with software running on a computer to analyze the metal as it is being cut by the CNC cutting machine and determine a composition. In embodiments, the composition is compared to an expected composition and saved in a database with identifying information; in a particular embodiment the database is queried to provide identifying information of metal having similar composition to the workpiece.

A welding clamping device includes a base plate and two positioning slide blocks, each of the positioning slide blocks includes a slide base and a cam, wherein the slide base includes a support plate and two cam holders fixed at two opposite ends of the support plate; the cam is rotatably mounted between the two cam holders via a camshaft for press-fitting a workpiece to be welded; and the base plate is provided with a slide slot, and the two positioning slide blocks are relatively slidably mounted in the slide slot. The device can better position a workpiece to be welded, improving welding quality; and clamping and unloading are easy and take a short time, improving welding efficiency.