10results about How to "Avoid welding deformation" patented technology

This application provides a radially inlet anti-icing bleed air collecting ring structure, belonging to the field of aero-engine technology. It includes a collecting ring welding assembly, an inlet casing, and an inlet support plate. The inlet support plate is welded to the inlet casing. The collecting ring welding assembly includes a collecting ring, an inlet pipe, and a collecting ring cover plate. The collecting ring cover plate and the collecting ring form an annular collecting cavity. The inner wall of the collecting ring is fitted onto the outer side of the inlet casing assembly. A radial ventilation hole is provided on the inner wall of the collecting ring. An anti-icing bleed air inlet hole is provided on the inlet support plate. The radial ventilation hole and the anti-icing bleed air inlet hole are connected by a bleed pin. The inner cavity of the inlet support plate communicates with the collecting cavity through the through hole of the bleed pin. A bleed pin mounting hole is provided on the outer wall of the collecting ring, and this hole is sealed by a plug. One end of the inlet pipe is connected to the outer wall of the collecting ring and communicates with the collecting cavity, while the other end is connected to the anti-icing bleed air circular pipe. This application achieves a compact and detachable design, reducing pressure and temperature losses during the flow of anti-icing bleed air.

This invention discloses an automated welding production line and welding method for L-shaped ribbed steel bridge deck unit joints, relating to the field of bridge welding manufacturing technology. The automated welding production line includes L-shaped ribbed steel bridge deck units; gantry rails spaced at intervals; a multi-functional gantry workstation mounted on the gantry rails; a vision-teaching collaborative robot located inside the L-shaped ribbed steel bridge deck unit; and a tracked welding workstation located outside the L-shaped ribbed steel bridge deck unit. The automated welding method includes the following steps: S1: assembly and positioning; S2: hoisting and fixing; S3: equipment deployment; S4: first teaching welding; S5: second teaching welding; S6: equipment transfer; S7: repeating steps S2-S6 until all U-shaped groove welds of the T-shaped transverse ribs and partition joints of all L-shaped ribbed steel bridge deck units are completed. This invention solves the technical problems of low welding efficiency and unstable welding quality in existing L-shaped rib joints.

This invention discloses a welding positioning device and its forming method for training missiles. The welding positioning device includes: a missile body welding fixture, a pouring fixture, a tail fin welding fixture, and two centers. Each of the two centers consists of a frustum and a round rod coaxially fixed to the large-diameter end of the frustum. The two centers are respectively used to hold the inner hole of the missile body's central tube and the positioning sleeve. The missile body welding fixture is used to weld and position the missile head and cylindrical section, and the missile head and mounting sleeve. The pouring fixture is used for pouring and forming concrete inside the conical section of the missile body. The tail fin welding fixture is used to weld and position the tail fin and the conical section, and to ensure the relative angle between the tail fin blades and the positional relationship between the blades and the missile body axis. This invention can ensure the welding quality and welding accuracy of the training missile, thereby ensuring coaxiality, symmetry, and straightness.

The application discloses a titanium alloy bogie beam forming device and forming method, the forming device comprises a platform; a guide rail is arranged along the Y-axis direction; supports are distributed along the length direction of the platform; support platforms are symmetrically distributed on both sides of the supports and are slidably connected with the platform through the guide rail; a centering and jacking device is fixedly connected with the support, and both ends of the centering and jacking device can abut against and contact the bottom end of the B surface of the beam; a supporting device is arranged above the centering and jacking device, and both ends of the supporting device can abut against and contact the top end of the B surface of the beam; a plurality of beam jacking devices are arranged on the support platform and are distributed on the A end, the B end and the A surface of the beam; a beam pressing device is arranged on the A surface side of the beam and is arranged on the support platform; a longitudinal beam pressing device is arranged on the C surface side of the small longitudinal beam and is arranged on the support; a plurality of longitudinal beam jacking devices are distributed on both sides of the small longitudinal beam and are arranged on the support and the longitudinal beam pressing device, and the application has the effects of accurate positioning, high precision and improved product quality.

This invention relates to a radiator grid structure and its forming process, belonging to the field of welding technology. It solves the problem that existing technologies lack suitable grid structures for radiator products, making it impossible to form open areas and thus hindering the lightweighting of radiator products. The radiator grid structure includes grid plates and baffles, with the baffles sequentially connected to form a closed loop. The grid plates are inserted into the internal space formed by the baffles to form open areas, and the ends of the grid plates are fixedly connected to the baffles. This invention achieves lightweighting of products in the aerospace field.

This invention belongs to the field of steel formwork processing technology, specifically a precast grandstand steel formwork splicing and welding device, including a welding fixture. A steel formwork is mounted on the welding fixture, and pressure strips are respectively provided on both sides of the top of the steel formwork. A first insertion sleeve is fixedly connected to each of the two pressure strips. A first bearing bracket is fixedly connected to each of the first insertion sleeves on the welding fixture, and a first combined sleeve is rotatably connected to each of the first bearing brackets. In this invention, a first hydraulic cylinder drives a linkage frame and a second double-sided gear, causing the pressure strips on both sides to apply equal downward pressure to the top of the steel formwork, avoiding template tilting or stress concentration caused by unilateral pressure. The downward pressure can be adjusted according to the steel formwork model to meet differentiated pre-pressing requirements. The mechanical transmission chain ensures uniform pressure distribution. Pre-pressing before welding effectively constrains the tendency for thermal deformation, providing a stable benchmark for subsequent welding.

The present application relates to the technical fields of new fuel auxiliary equipment, in particular to a kind of new fuel storage container internal partition plate welding auxiliary device;Technical scheme: a kind of new fuel storage container internal partition plate welding auxiliary device, including electric push cylinder, base frame assembly, connecting plate assembly, traction assembly and support assembly, electric push cylinder is installed on base frame assembly, connecting plate assembly is connected with the push rod end of electric push cylinder, traction assembly includes steel wire rope main body and screw thread tightener;The support plate between the tank body and the partition plate is embedded in the present application, the accurate positioning of the partition plate is realized and the continuous support is provided during welding process, effectively inhibits welding deformation, simultaneously by electric push cylinder pulling support plate synchronous movement, realize micro straightening, significantly improve welding quality and size consistency.

The invention discloses a part welding machine for aluminum alloy unmanned aerial vehicle shell machining, and relates to the technical field of welding. Comprising a workbench, a welding mechanism is arranged at the rear end of the workbench, a clamp is arranged at the top of the workbench, a mounting box is fixed to the middle of the right end of the workbench, a hand supporting assembly is arranged in the mounting box, a front supporting assembly is arranged at the end, close to the welding mechanism, of the mounting box, and a protection assembly is arranged at the end, close to the clamp, of the front supporting assembly. Stable supporting force is applied to the palm of a worker through the hand supporting assembly, the stress state of welding operation is optimized, the front side of a part is lifted through the front supporting assembly, meanwhile, welding thermal deformation is prevented, closed safety protection is formed for a welding area through the protection assembly, and the welding safety is improved. And full-flow assembly synchronous action with hand force application as a single trigger point is achieved through cooperation of multiple sets of hydraulic boxes.

The invention belongs to the technical field of laser welding, and particularly relates to an aluminum plate laser welding device with a thermal deformation control structure, which comprises a base, a PLC (programmable logic controller), a positioning clamp assembly, a welding position adjusting assembly and a side synchronous pressing and cooling assembly, the movable end of the welding position adjusting assembly is fixedly connected with a positioning frame, and the lower end of the positioning frame is fixedly sleeved with a laser welding head in an inserted mode. The two aluminum plates are symmetrically arranged, and laser is vertically and directly opposite to the center of a welding seam for incidence, so that the aluminum plates on the two sides are uniformly heated, temperature fields are symmetrical, and continuous and synchronous cooling is realized by matching with the circulating flexible heat-conducting tracks synchronously moving on the two sides of the welding seam, heat can be quickly guided out, the temperature gradient and thermal stress are reduced, and welding deformation is inhibited; and meanwhile, through stable pressing and fixing and non-sliding-friction contact, vibration displacement and surface scratching of the aluminum plate are effectively avoided, and the welding process stability and the joint quality are further improved.

The utility model belongs to the technical field of welding clamps, and particularly relates to a high-adaptability full-automatic welding clamp which comprises a fixing plate provided with a mounting frame, a first driving device is movably connected to one side of the mounting frame, and a supporting plate, a pressing block and a second driving device are arranged on the first driving device. The first driving device drives the supporting plate to drive the pressing block and the second driving device to rotate around one end of the mounting frame, a limiting device is arranged at the front end of the second driving device, the limiting device is driven by the second driving device to move up and down relative to the front end of the workpiece to be machined, and a supporting device fixedly connected with the mounting frame is arranged below the pressing block. The supporting device is matched with the pressing block and the limiting device to achieve limiting of the workpiece to be machined. Through the arrangement of the components, the clamp can be flexibly compatible with various parts of the same type, the cost is reduced through the modular design, meanwhile, rapid high-precision repeated positioning and rapid switching of the whole clamp are ensured, and the production efficiency is effectively improved.