Robot module for resistance spot welding |
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IPC classes for russian patent Robot module for resistance spot welding (RU 2325979):
      
 Robot module for resistance spot welding / 2304498
Invention relates to resistance spot welding device for manufacture of spacer grids of nuclear reactor fuel assemblies. Provides robot module includes welding machine, industrial robot with welding gun with electrodes installed on robot arm, control system and tables with device for fastening spacer grid to be welded. Device for fastening spacer grid to be welded is made in from of multijaw chuck with jaws enclosing perimeter of said grid. Electrodes of welding guns have spherical working surface and they are provided with cylindrical connecting element. Said connecting element is arranged in electrode holder at angle to perpendicular drawn to welded surfaces. Multijaw chuck is provided with platform with reduced height sections. Slots are made on jaws enclosing perimeter of spacer grid.
 Actuator linear displacement / 2211523
 Module rotation / 2176951
The invention relates to manipulators designed to perform loading and unloading operations in forging production, and can be used for laying (extract) parts in the working area of the processing machine
 The robotic module for resistance spot welding / 2138376
The invention relates to welding, and is intended for the manufacture of the spacer grids of the fuel assemblies of nuclear power plants
 The manipulator platform / 2093344
The invention relates to robotics and can be used in handling systems automated technological complexes that require precise movement of the parts of the blanks on complex curved or spherical surfaces for welding, cutting, surface hardening, etc
 The module manipulator / 2028928
 The module manipulator / 2022773
 Trunk manipulator / 2009884
The invention relates to mechanical engineering and can be used in industrial robots for painting works
 Inspection method of electrode active face wear of welded fuel assembly spacer grid of nuclear reactor after electrodes replacement or conversion to different type of spacer grid / 2323807
Grid field is assembled. During whole welding process it is swaged. Junction points of welding surfaces are detected. Electrodes coordinates and their motion paths during replacement are adjusted. Welding process is carried out by spot welding for every line with missing cells guide channel passing. Wear of electrodes active faces is controlled. During electrodes coordinate adjustment welding spots coordinates slip is evaluated. After welding spots are fixed change in welding spots slip referring to contact coordinate is detected and wear of electrode active faces is evaluated. Evaluated wear of electrode active face is compared to maximum permissible wear level. If wear of electrode active faces is more than maximum permissible wear level welding process is stopped and electrodes are replaced.
Robot module for resistance spot welding / 2304498
Invention relates to resistance spot welding device for manufacture of spacer grids of nuclear reactor fuel assemblies. Provides robot module includes welding machine, industrial robot with welding gun with electrodes installed on robot arm, control system and tables with device for fastening spacer grid to be welded. Device for fastening spacer grid to be welded is made in from of multijaw chuck with jaws enclosing perimeter of said grid. Electrodes of welding guns have spherical working surface and they are provided with cylindrical connecting element. Said connecting element is arranged in electrode holder at angle to perpendicular drawn to welded surfaces. Multijaw chuck is provided with platform with reduced height sections. Slots are made on jaws enclosing perimeter of spacer grid.
 Apparatus for contact welding of panels / 2273555
Apparatus includes housing in which upper and lower electrodes and mechanism for tightening welded assembly are mounted. Said mechanism includes two detachable portions mutually joined by angle less than friction angle of material of joined parts.
 Apparatus for contact welding of panels / 2273554
Apparatus includes mechanism for drawing in pack of welded parts. Said mechanism includes two detachable portions with grooves forming cavity. In cavity restricted by said grooves elastic envelope is arranged. Said envelope is communicated with pressure source.
 Automatic line for producing wire gauzes / 2270082
Line includes successively mounted coil holders with coils whose number is equal to maximum number of longitudinal wires of gauze; apparatus for feeding longitudinal wire having guiding devices, straightening mechanism; machine for multi-spot contact welding; apparatus for stepwise feed of longitudinal wire, lower electrode unit, apparatus for feeding cross wire, all arranged on housing of welding machine. Upper shunting electrodes are mounted in upper rocking beam. Line also includes guillotine shears for chopping wire, packaging device and control system.
Resistance spot welding method / 2270081
Metallic layer of powdered self-fluxing chrome-nickel alloy with high electric resistance (kind of alloy is given in description of invention) and with total content of nickel and chrome 70 - 80%; C, Si, Mn, B, Fe - the balance. Such powdered alloy is applied by thickness no more than 0.3 mm onto surface of welded part. During welding melt metal of such layer is displaced by action of axial loads onto periphery of spot formed by welding.
 Method of resistance welding / 2269400
Invention relates to welding and it can be used in manufacture of structural members of materials featuring high plastic properties in zones of temperatures of recrystallization, particularly, in manufacture of frame members of heat liberating assemblies of nuclear reactors manufactured of zirconium alloys. Proposed method of resistance welding with simultaneously putting two weld spots of mainly coaxially arranged parts, includes compression of parts and heating of welding zone with electric current at partial shunting. Compression is done with forming of line of contact along generatrices of parts. Heating is carried out first with forming of zone of higher plasticity along line of contact of parts generatrix in which sections of diffusion character connection are formed, and at further heating, sections of cast nugget are formed in middle part of weld spots. When forming sections of cast nugget, zone of melting is made not exceeding half of area of weld spot, and at beginning of metal melting, welding current is cut off.
 Method for resistance spot welding of different-thickness parts and electrode for performing the method / 2257283
Method is realized due to using electrode with heat resistant insert extending outside electrode base. Method comprises steps of selecting length of insert extension depending upon thickness and properties of material of thin part; placing welded parts between electrodes in such a way that electrode with insert is at side of thin part; at welding process deforming thin part according to length of insert extension for forming relief and making welded joint in deformation zone. At beginning of welding process thin part is deformed and surface area of mutual contact of parts is significantly reduced and increased density of welding electric current is provided. Heat concentration in zone of mutual touching of parts increases till fusion for providing welded joint.
 Resistance spot welding method / 2254215
Method comprises steps of calculating parameters of welding mode at deciding equation system at allowance ±5% depending upon heat conductivity, bulk heat capacity, specific electric resistance and limit strength of welded metal; determining electrode compression effort depending upon thickness value of joined parts for providing high quality welded spot while taking into account coefficients related to material of joined parts.
 Apparatus for continuous manufacture of flat nets / 2251475
Apparatus for making nets of wire with diameter 2 - 4 mm includes upper and lower electrode units with electrodes arranged on foundation of welding machine; mechanism for step feed of lengthwise wire; mechanism for piecewise feed of cross wire, control system. Mechanism for piecewise feeding cross wire includes units of feeder and magnetic catcher, both rigidly mounted in foundation at different sides of lower electrodes. Feeder includes hopper for cross wires; said hopper is communicated with inlet of slit-like guiding duct. Splitter of wires in the form of gate connected to pneumatic cylinder is arranged at outlet of said duct. Magnetic catcher includes magnetic blocks arranged in grooves on common bracket. Each magnetic block includes permanent magnet whose mutually opposite faces are embraced by means of magnetic circuit; poles of magnetic circuit are in the form of plates. Vertical end surfaces of said plates are placed along single row in welding line between lower electrodes.
 Rails butt resistance welding machine / 2325978
Invention relates to welding works, particularly to the devices to effect burr resistance welding of rails. The machine comprises a frame with a post attached thereto and two casings, i.e. a fixed one and a movable ones running in guides. It also incorporates clamping hydraulic cylinders, sliders, input and output lifting rollers, top and bottom electrodes and top and bottom supports. The above casing, everyone of them, contains an inner case. The sliders are arranged in the said inner cases and are coupled to the clamping hydraulic cylinder rods. The inner case of the fixed cylinder is mounted can be moved horizontally by a drive. The inner case of movable casing can be moved vertically also by the drive. The bottom electrodes are mounted fixed. The fixed and movable casings are provided additionally with a plate, a shaft and inserts for the electrodes and supports to be fitted thereto. The bottom supports run in spherical inserts. The top electrodes and top supports run in cylindrical inserts fitted in the plates arranged in the sliders lower parts, the plates being mounted on shafts to run free.
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FIELD: physics. SUBSTANCE: invention relates to nuclear power, in particular, to production of power reactor fuel element spacer lattice using a robot module for resistance spot welding. The module incorporates a welding machine, an industrial robot with tongs fitted on the robot arm and fixing the electrodes, a control system, a table accommodating an attachment device for spacer lattice to be welded, the said device being made in the form of multi-jaw chuck with jaws enveloping the lattice perimeter. The chuck is provided with a platform with a blind hole to receive a sleeve. The hole depth corresponds to the size the sleeve extends by relative to the lattice cell. The said platform incorporates the spacer lattice locks, spacer lattice reference point and a spring-loaded bar. The locks allow their arrangement in the lattice cells. The reference point allows its arrangement in one of the spacer lattice channel holes. The bar is fixed on the platform and can move towards the sleeve. There are base elements arranged on the bar face to enter the sleeve slot. EFFECT: performances of the module are widened thanks to an accurate positioning of the sleeve relative to the lattice with the subsequent welding both together. 3 dwg
The invention relates to nuclear energy and may find application in enterprises that manufacture fuel assemblies (FA) for nuclear power reactors. The spacing of the fuel elements is fifteen cell lattices arranged along the length of the fuel Assembly, through 250 mm each. Mounting grid spacers is carried out on the Central frame tube size ⊘11.2×0.8 mm (see Development, production and operation of fuel cell power reactors, M., "Energoatomizdat", 1895, str, 175). The spacer grid in the FA must provide the exact location of the fuel elements in accordance with a specified step, to comply with such conditions, when each cell is connected with neighboring cells rim and the Central bushing pin-point welding must be in place by welding the molten core of the required equivalent area (OST. 95.503-84 standard in the industry. Connections welded and brazed for products active zones of nuclear reactors. General technical requirements). As the spacer grid must be installed in the fuel assemblies in a specific position relative to the Central axis of the fuel Assembly, the sleeve must also be strictly oriented relative to the spacer grids. The grooves in the sleeve shouldbe parallel edges of the grid, and the protruding portion is located on a certain side of the spacer grid. The closest in technical essence and the achieved effect is a robotic module for resistance spot welding (see Russian Federation Patent RU №2138376 from 13.05.98,, publ. 27.09.99,, MKI UK 11/10, WC 101:02, 25J 9/08)containing welding machine, industrial robot mounted with a hand welding tongs with electrodes, a control system, a table placed on it by the fixing device welded grating, made in the form mnogotonazhnogo cartridge with sponge covering the perimeter of the grid. The disadvantage of robotic module for resistance spot welding is the lack of accurate base of the sleeve relative to the spacer grid height and fixing it against rotation relative to the verge of the spacer grid before welding. An object of the invention is the expansion of technology module welding by providing accurate chopper sleeve relative to the spacer grids are then welded together. This technical problem is solved by the fact that in robotic module for contact spot welding mainly the spacer grids of the fuel assemblies of a nuclear reactor containing the welding mA is inu, industrial robot mounted with a hand welding tongs with electrodes, a control system, a table placed on it by the fixing device welded grating, made in the form mnogokratnogo cartridge with sponge covering the perimeter of the lattice, according to the invention mnogogolovy cartridge equipped with a platform for mounting the spacer grid, performed in the platform blind hole bushing, the depth of which corresponds to the size of the protrusion of the sleeve relative to the cells of the spacer grids, fixed thereto by clamps, made with locations in certain cells of the spacer grids, and reference is made to the possibility of placing in one of the channel openings, also mnogogolovy cartridge equipped with fixed the ability to move in the direction of the sleeve spring rod, on the end which is a basic element made with the possibility of entering the groove in the sleeve to lock it against rotation relative to the cells of the spacer grid. The invention is illustrated by drawings. Figure 1 presents the robotic module for resistance spot welding, General view. Figure 2 - mnogogolovy Chuck jaws, view A. Figure 3 - the platform for the installation of the spacer grid, the cross-section B-B. The robotic module for contact spot welding works in the following way. The spacer grid 8 is mounted on the platform 11, in megacoleccion the cartridge 9, the clamps 16 are located in the cell 15, and the guide 17 in channel opening 18, the sleeve 13 is ustanavlivaetsya with the protrusion 14 relative to the cells 15 of the spacer grid 8 in the blind hole 12 of the platform 11, under the action of the spring mobile bar 19 is in the groove 21 of the sleeve 13 and secures it against rotation relative to cells 15, then the spacer grid 8 is crimped jaws 10 around the perimeter. Management system 5 command industrial robot 2, the welding pliers with 3 electrodes 4 are moved to the position of the welding electrodes 4 are compressed, welding machine 1 produces the welding pulse. The robotic module for contact spot welding will allow the welding sleeve with cells of the spacer grid, providing them with accurate and complete bairoko relative to each other. The robotic module for resistance spot welding, mainly the spacer grids of the fuel assemblies of a nuclear reactor containing welding machine, industrial robot mounted with a hand welding tongs with electrodes, a control system, a table placed on it by the fixing device welded the spacer grid, made in the form mnogotonazhnogo cartridge with sponge covering the perimeter of the grid, characterized in that mnogogolovy cartridge equipped with a platform in which the blind hole bushing, while the depth of the hole corresponds to the size of the protrusion of the sleeve relative to the cells of the spacer grids, and the PLA is form fitted clamps the spacer grid, made with the possibility of location in the cells of the spacer grids, guide spacer grids made with the possibility of accommodation in one of the channel openings of the spacer grid, and a spring strip mounted on the platform can move in the direction of the sleeve and is equipped with an end face of the base element, made with the possibility of entering the groove in the sleeve.
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