The inserts includes ahead part including a docking portion intended to receive a welding electrode, a peripheral rim, intended to bear against the receiving part, and a body part intended to extend through the first part, the body part having a distal end intended to be welded to the second part. The docking portion is connected to the peripheral rim by connection means configured to allow the translation of the docking portion and of the body part with respect to the peripheral rim under the effect of a distal pressure exerted on the docking portion during the operation of assembling the first and second parts.

A resistance point welding apparatus for fixing a turbulence installation body to an inner wall of a steam generator pipe, having a welding head, which is introduced into the pipe and includes a lance having an electrically conductive material, a point welding electrode, which projects out of the lance in the radial direction, an effective element and an insulation body, which is opposite the point welding electrode in the radial direction and is moved by the effective element, is provided. The lance is tapered at a defined distance from the welding head end such that the insulation body and the point welding electrode press the turbulence installation body against the inner wall of the pipe when the effective element is activated. When a welding stream is impressed on the lance, a point-like welding stream flows via the point welding electrode to a counter electrode arranged outside the pipe.

A welding apparatus for resistance-welding a tubular member and a bar member includes: a positioning jig configured to make contact with the bar member from one side of the bar member in a direction perpendicular to an extending direction of the bar member; a first power supply jig configured to press the bar member from the other side of the bar member in the direction; a second power supply jig provided on an anti-bar member side of the tubular member and configured to apply pressure to contact surfaces of the bar member and the tubular member; and means for supplying, with the bar member pressed between the positioning jig and the first power supply jig and the second power supply jig applying pressure to the contact surfaces, electric current to the first power supply jig, the bar member, the contact surfaces, the tubular member and the second power supply jig.

Provided are a three-dimensional shaped object production device and method capable of producing a predetermined three-dimensional shaped object by forming a ball at a leading end of a conductive wire through use of the conductive wire based on scanned data or designed data and aligning and stacking the balls. The three-dimensional shaped object production device includes: a plate (40), on which a three-dimensional shaped object is placeable; a ball forming section configured to form a ball (13) by applying high voltage between a leading end of a conductive wire (4) paid out from a leading end of a capillary (12) and a spark rod (19) and melting the leading end of the wire by discharge energy; a positioning device configured to position the plate and the ball forming section by moving the plate and the ball forming section relative to each other; and a bonding section configured to bond the ball formed at the leading end of the capillary to another ball (14) that has already been stacked on the plate, the forming of the ball by the ball forming section, the relative moving of the plate and the ball forming section by the positioning device, and the bonding of the ball formed at the leading end of the capillary to the another ball by the bonding section is repeated, to thereby produce a three-dimensional shaped object having a desired shape.

Disclosed are a filter structure, a welding fixture, and a manufacturing method of the filter structure. The filter structure includes: a box having a cavity; coil components installed in the cavity; and wiring components, each having a positive wiring pin and a negative wiring pin fixed to the box. The conductive wire has conductive wires coupled to both ends of the coil component and welded with the positive and negative wiring pins respectively. After a wiring section of the pins is embedded into a side of a wire latch slot, the conductive wire of the coil is latched into the wire latch slot and welded with the pins by spot welding without the need of manually winding the conductive wire and the pins, so as to reduce labor, expedite assembling, improve production efficiency and save material cost of the conductive wire.

A fixture and method for resistance welding of at least one pad to at least one surface of an article is disclosed. The method includes mounting the article in the fixture, placing the at least one pad on the at least one surface of the article, positioning a first electrode of a resistance welding apparatus to the at least one pad and a second electrode of the resistance welding apparatus to the article, and applying pressure and electric current across the at least one pad and the at least one surface. The fixture includes a first, second and third support element, which, respectively, include a first, second and third contact surface being adapted and disposed to support a first, second and third portion of the article. The first, second and third contact surfaces are each inelastic and electrically insulating. The fixture is arranged and disposed to non-rotatably cradle the article.

There is provided a component joining structure that includes: a resin component; a metal tip that is provided in the resin component by insert molding, and that includes protruding portions that protrude from the resin component; and a metal component that is spot welded to the protruding portions, and that is joined to the resin component by an adhesive agent that is provided in gaps formed, by the protruding portions, between the resin component and the metal component.

A welding apparatus includes: a welding machine having a lower arm member, an upper arm member, and electrodes configured to advance and retreat; a robot device to which the welding machine is mounted; a support member including a vertical member substantially in a vertical direction, and a horizontal member substantially in a horizontal direction. The vertical member is mounted on one of the lower arm member and the upper arm member at a position away from the electrode of the one of the lower arm member and the upper arm member; and a parts-feeding device mounted to the horizontal member and configured to feed parts to the electrode.

A method for manufacturing a joined member and a joined member manufacturing apparatus which can manufacture a joined member with a joint portion having an appropriate hardness. A method for manufacturing a joined member C by joining a first member D formed of a metal material having a possibility of undergoing quenching and a second member E formed of a metal material, the method includes a contact-placing step S1 of placing the first and second members D and E with joint target portions of the first and second members D and E respectively being in contact with each other; a joining step S2 of joining the first and second members D and E by passing a pulsed welding electric current A1 for joining through the joint target portions J of the first and second members D and E; a first tempering step S3 of tempering a joint portion F, where the first and second members D and E are joined, by passing a first tempering electric current A2 through the joint portion F; and a second tempering step S4 of tempering the joint portion F by passing a second tempering electric current A3 smaller than the first tempering electric current A2 through the joint portion F.

A method for joining a joining element onto a workpiece, in particular for stud welding or stud gluing. The method steps including providing the joining element the workpiece; detecting a characteristic variable of the workpiece or of the joining element; evaluating the characteristic variable and classifying it into one a first or a second variable class; performing the joining process, if the characteristic variable is classified into the first variable class; or performing a cleaning process on the workpiece or on the joining element and then performing the joining process after the cleaning process, if the characteristic variable is classified into the second variable class.