Abstract: A device for heat control in laser welding of dissimilar additively-manufactured parts includes a welding main body, a moving frame, a lifting frame, a laser welding head, a temperature control mechanism, a pressing mechanism, and a supporting and cleaning mechanism. The moving frame is mounted on the welding main body. The lifting frame is provided on the moving frame. The temperature control mechanism includes a welding platform designed to hold a laser metal deposition (LMD) printed part and a selective laser melting (SLM) printed part. The laser welding head is provided on the underside of the lifting frame for to weld the LMD part to the SLM part.

Abstract: A method of measuring a machined region includes: obtaining a coordinate of at least one measurement point, where the coordinate of the at least one measurement point corresponds to a target position on a surface of a machined material; determining a machined region based on the coordinate of the at least one measurement point; and controlling a target page to display the machined region. The method provided by the present application helps to accurately and higher efficiently machine the machined material.

Abstract: A high-strength welding wire includes, in weight percentage, 5.8% Cu, 0.2% Mn, 0.1% V, 0.2% Zr, 0.2% Si, 0.3% Fe, 0.1% Zn, 1.4% compensation element, 0.2% hydrogen evolution element, 1.2% nanoceramic particle, and Al for the balance. Various powdered raw materials are mixed, wrapped with an aluminum strip, rolled and subjected to wiredrawing to form the high-strength welding wire. In a welding method for the high-strength welding wire, a K-shaped groove is formed between a stringer and a panel, and an inclined angle of the welding gun and a distance between the welding gun and the weld are adjusted. Then the angle between the wire-feeding tube and the welding gun and the striking mechanism and the weld are adjusted. Protective gas is supplied to the welding pool, and a laser is activated to perform welding. A striking mechanism is started to strike the weld.

Abstract: A high-strength welding wire includes, in weight percentage, 5.8% Cu, 0.2% Mn, 0.1% V, 0.2% Zr, 0.2% Si, 0.3% Fe, 0.1% Zn, 1.4% compensation element, 0.2% hydrogen evolution element, 1.2% nanoceramic particle, and Al for the balance. Various powdered raw materials are mixed, wrapped with an aluminum strip, rolled and subjected to wiredrawing to form the high-strength welding wire. In a welding method for the high-strength welding wire, a K-shaped groove is formed between a stringer and a panel, and an inclined angle of the welding gun and a distance between the welding gun and the weld are adjusted. Then the angle between the wire-feeding tube and the welding gun and the striking mechanism and the weld are adjusted. Protective gas is supplied to the welding pool, and a laser is activated to perform welding. A striking mechanism is started to strike the weld.

Abstract: The disclosure relates to a flexible automatic clamping device and method for backside laser penetration welding of a T-shaped structure. The flexible automatic clamping device includes a clamping system, a ranging system and a control system. The ranging system outputs a position instruction to the control system, the control system outputs a movement instruction to the clamping system, so as to adjust the clamping system to an optimal position, then a stringer pressing plate fastens a stringer by means of a Y-shaped connecting rod, and a skin pressing plate fastens skin by means of a skin connecting rod. Based on the flexible automatic clamping device, the method includes prewelding clamping, backside laser penetration welding and postwelding shape retention. The disclosure implements accurate positioning, automatic clamping, backside laser penetration welding and postwelding shape retention of a T-shaped skin-stringer structure.

Abstract: A mounting base structure used for a photographic lamp or monitor comprises a first connecting rod having an end rotatably connected with one side of a photographic lamp or monitor and an end provided with a connecting part. A second connecting rod to be attached to the first connecting rod is hinged to the connecting part. A first threaded hole to be connected with a connecting bolt on a digital video camera is horizontally formed in the side face of the other end of the second connecting rod. The mounting base structure used for the photographic lamp or monitor is simple and compact and facilitates the connection of the photographic lamp or monitor with the digital video camera.

Abstract: A mounting base structure used for a photographic lamp or monitor comprises a first connecting rod having an end rotatably connected with one side of a photographic lamp or monitor and an end provided with a connecting part. A second connecting rod to be attached to the first connecting rod is hinged to the connecting part. A first threaded hole to be connected with a connecting bolt on a digital video camera is horizontally formed in the side face of the other end of the second connecting rod. The mounting base structure used for the photographic lamp or monitor is simple and compact and facilitates the connection of the photographic lamp or monitor with the digital video camera.

Abstract: An accessory connecting shelf for video and camera includes a horizontal orientated connecting plate (1) having double-step connecting pieces. A screwed connecting through hole (3) is provided in the higher connecting piece (2) at the inside end of the connecting plate for connecting a video and camera apparatus, and a chute (5) is provided in the lower connecting fpiece (4) at its outside end. An arc support (6) is connected to the chute, wherein the lower end of the arc support is connected with the lower connecting piece by a connecting screw (7) passing through the chute, and the upper end of the arc support is provided with an arc chute (9). Hot shoe holders (10) are provided within the arc chute for connecting accessories. The present invention not only enables several hot shoe holders to be installed simultaneously to connect several accessories, but also can flexibly adjust various orientations to meet the requirements of different shooting angles.

Abstract: An accessory connecting shelf for video and camera includes a horizontal orientated connecting plate (1) having double-step connecting pieces. A screwed connecting through hole (3) is provided in the higher connecting piece (2) at the inside end of the connecting plate for connecting a video and camera apparatus, and a chute (5) is provided in the lower connecting fpiece (4) at its outside end. An arc support (6) is connected to the chute, wherein the lower end of the arc support is connected with the lower connecting piece by a connecting screw (7) passing through the chute, and the upper end of the arc support is provided with an arc chute (9). Hot shoe holders (10) are provided within the arc chute for connecting accessories. The present invention not only enables several hot shoe holders to be installed simultaneously to connect several accessories, but also can flexibly adjust various orientations to meet the requirements of different shooting angles.