The robotic module for resistance spot welding

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 invention relates to mechanical engineering and can be used in industrial robots for painting works

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.

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.

Invention refers to engineering industry, and can be used for grinding, polishing and milling spatial polysurfaces of details, and namely propeller blades, working part of gas, steam or hydraulic turbine blades. At the device bottom there arranged is the point for installing the machining tool with the tool rotary drive, and the point for installing the machined item in the form of multilink manipulator. There provided are two mechatronic modules of rotary and translational movements - machined item movement module and cutting tool rotary drive movement module. Each module consists of a housing, splined bush, nut and outlet shaft. Stators of two synchronous electric motors are fixed on the housing, rotor of the one synchronous electric motor - on splined bush, and rotor of the other synchronous electric motor - on the nut. Outlet shaft is connected by means of a rectilinear kinematic pair made in the form of a spline connection to splined bush, and by means of a screw pair - to nut. Outlet shaft is hollow. Nut and splined bush are connected to the housing by means of turning pair made in the form of ball bearing or slide bearings. All kinematic pairs of each mechatronic module of rotary and translational movements have a common axis. There provided is at least one kinematic pair with the appropriate drive which is intended for moving the cutting tool rotary drive movement module housing relative to machined item movement module housing.

Manipulating platform comprises following components: frame; spherical mechanism with turning motor on vertical axis and two arc motors on horizontal axis, with aspect sensors, with platform mounted in plane of rotation of turning motor between two pairs of arc motors with orthogonally related planes of rotation; cross-slide table with linear motor which table is mounted in parallel and movably relative to the platform; control signal units. Inductors of one pair of arc motors are immovably mounted on the frame diametrically; their movable arc magnetic cores are pivotally mounted on turning motor stator structure along corresponding horizontal axis. Inductors of the other pair of arc motors are mounted on the frame diametrically pivotally; their movable arc magnetic cores are mounted on turning motor stator structure immovably along the other horizontal axis; movable part of linear motor is pivotally fixed directly on the cross-slide table. Inductor of linear motor is immovably mounted on turning platform between frame and inductors of arc motors pivotally mounted on the frame. There are flexible conductors spiraled into harness. Between the inductor and arc magnetic core of one of the arc motors pivotally mounted on the frame, there are flexible conductors settled into harness curved along sinusoid.

Method for multialternative optimisation of automation modules of structural synthesis of mechatronic modular robots is proposed, in which at performance of synthesis of the multiinvariant model structure of mechatronic modular robots, and further fixation of obtained optimum solutions, a variety of design elements is considered and corresponding alternative variables are entered by presenting discrete numbers corresponding to those elements in binary notation; after that, the number of modules combined in one robot, mainly without distinct structure are marked, and connection of every new module is provided to earlier assembled ones along the chosen direction and coupling of its first interface platform is performed to one of the free ones on any other structural members occupying the closest extreme position in this or that row; after that, alternative variables are entered; at that, for optimisation structural synthesis there chosen are values of alternative variables $$\overline{x_1^{*},x_{41n}^{*}}$$ providing maximum value of function f.

Invention relates to machine building, particularly, to robotics. Proposed robot consists of at least two articulated modules. Articulation of every new module with preassembled one (ones) is performed in selected direction by coupling of its first interface site with one of free structural elements in extreme position in one or other line. Alternative variables for algorithms of control over mechanotronic modular structure for description of periodic law parameters are selected proceeding from the following ratio: Angle=A+Bsin(ωt+φ), where A is the magnitude of generalised coordinate relative to which periodical motion occurs; B is the amplitude of periodic oscillation of generalised coordinate. Total magnitude |A|+|B| may not exceed the maximum tolerable deviation of the module generalised coordinate, while φ is the displacement. In compliance with one version for optimised structural analysis, selected are alternative variables $$\overline{x_1^{*},x_{41n}^{*}}$$ to ensure maximum value of function $$f=\frac{{[y(\overline{x_1,x_{41n}})]}^2+{[z(\overline{x_1,x_{41n}})]}^2}{N(\overline{x_1,x_{4n}})N{\text{}}_c(\overline{x_{\mathrm{10,}}{x}_{41n}})}\to \max$$