Abstract: A rolling mill edger includes a pair of work rolls (1, 2) and a feed roll assembly. The assembly includes one or more driven feed rolls (23) and a drive for the feed rolls. The feed roll assembly is mounted on a moveable (25) mount such that the feed roll assembly is movable by pivoting the assembly between an operative rolling position (54) in the edger and a roll change position (55) out of the edger.

Abstract: The disclosure describes a battery tray profile for a battery tray that holds at least one electric battery module of a vehicle. The battery tray profile includes a base plate configured to receive the at least one electric battery module, wherein the base plate comprises at least one extruded curve; and a hollow chamber wall that rises from the base plate and is integrally extruded with the base plate. The disclosure also describes a method for producing a battery tray profile for a battery tray, including extruding a base plate for receiving the electric battery module; extruding at least one curve in the base plate; extruding a hollow profile wall that rises from the base plate and is integrally extruded with the base plate; and obtaining the battery tray profile from the extruding of the base plate and the hollow profile wall during an extrusion process.

Abstract: A drawing machine (1) for drawing a tube (2), defining a longitudinal axis (Y), comprising a first die (3) for carrying out the drawing of the tube by means of the use of a mandrel (4); a device for varying the inclination (5) of the tube inlet into said first die (3); a second die (6) for carrying out a skin pass operation on the tube, arranged downstream of said first die (3); an in-line system for detecting the eccentricity of the tube; a data processing system (7) for processing signals originating from said detection system and sending input data to said device for varying the inclination (5) of the tube to vary the inclination of the tube so as to correct the eccentricity of the tube in-line; wherein said in-line system for detecting the eccentricity of the tube comprises a first detection head comprising at least three first transducers (8) arranged downstream of said first die (3).

Abstract: A combined device for bending and cutting ribbon-shaped elements is described, comprising first guiding and supporting means (1, 101) adapted to allow positioning a ribbon-shaped element (T, T1), second guiding and supporting means (3, 103) adapted to prevent the rotation of the ribbon-shaped element (T, T1) with respect to an axis belonging to a plane on which the ribbon-shaped element (T, T1) rests, first translating means (41, 1041) and rotation means (4, 104) adapted to move a tool (5, 105) with respect to the second guiding and supporting means (3, 103); the second guiding and supporting means (3, 103) comprise a portion of bending profile (8, 108) adapted to bend the ribbon-shaped element (T, T1) and a portion of cutting profile (9, 109) adapted to cut the ribbon-shaped element (T, T1). A method is further described for bending and cutting ribbon-shaped elements performed through such device.

Abstract: A device and method for bending strand-shaped workpieces are described with a holder for a strand-shaped workpiece. A bending tool comprises at least one radius part and one bending part. The workpiece can be bent by pivoting the bending part about the radius part. A workpiece drive shaft that extends at least in a longitudinal direction is provided for driving the bending tool and a positioning device for positioning the bending tool relative to the workpiece. The positioning device allows a displacement of the bending tool and the tool driveshaft in at least one transverse direction that runs transversely to the longitudinal direction. A drive wheel is rotatably arranged around an axis that is fixed relative to the workpiece and is coupled via a transmission device to drive the tool driveshaft. The transmission device has a coupling element that can move transverse to the axis of the drive wheel.

Abstract: A bending machine has a main spindle which supports a die. There are two counter dies each mounted on a working arm which rotate about the main spindle. The working arms are driven by link arms which are acted on by a translational drive. There is versatile three-point bending caused by three die points, two on the working arms and one on the die support shaft. The working arm drive includes a translational component which extends through the die support shaft, and which is connected to the link arms. This achieves excellent symmetry and compactness.

Abstract: A system and method of manufacturing a metal vessel may include inserting a preform into a mold that includes multiple segments, the preform being a work hardened metal. A pre-pressure may be applied to the preform at a first pressure level. The multiple segments of the mold may be closed, and the pressure being applied to the preform may be increased using a step function to a second pressure level after the mold is closed to cause the preform to take a shape defined by the mold.

Abstract: This disclosure relates to methods and apparatuses for punching workpieces. A punching tool is configured to move during a punching stroke along a stroke axis towards a workpiece to be punched. The punching tool is configured to move away from the punched workpiece during a return stroke. The punching tool includes first and second components configured to be coupled hydraulically for concurrent movement along the stroke axis. The punching tool includes a punching drive for moving the first component along the stroke axis. The punching apparatus is configured to move the second component relative to the first component at a first transmission ratio during the punching stroke. The punching apparatus is configured to move the second component relative to the first component at a second transmission ratio in response to a reaction force of the workpiece exceeding a threshold value of the punching drive during the punching stroke.

Abstract: A punch assembly includes a punch body having an axis and a replaceable punch tip configured for a punching operation, e.g., in a punch press apparatus. A laterally manipulated coupling pin is provided to selectively engage the punch tip with the punch body along the axis, and to selective disengage the punch tip from the punch body.

Abstract: To provide a clamp apparatus including swinging fulcrums on a side of a swinging body, in which the clamp apparatus swings about the swinging fulcrum at the time of opening a channel mouth and at an initial stage to start clamping of the channel mouth, and as swinging for the clamping progresses, the clamp apparatus shifts to other swinging fulcrum located at an upper part of a clamping point to complete clamping.

Abstract: A clinching apparatus includes a clinching punch having a specifically dimensioned tapered surface which improves the strength of a clinch joint created therewith. In another aspect, a tapered surface adjacent a distal end of a clinching punch has an angle of 20-35° relative to a distal end. A further aspect of a clinching apparatus provides a tapered surface adjacent a distal end which is configured in accordance with a specific formula.

Abstract: A heat sink having a base and a projecting portion that extends from the base is manufactured by cold pressing a metal component. In the first process, a preparatory compact is formed by pressing the metal component with a first die including a first die block and a first punch. The preparatory compact has a depression on a surface of the metal component that faces the first punch and a protrusion on a surface of the metal component that faces the first die block. In the second process, by pressing the preparatory compact with the second die including a second punch and a second die block, the depression is crushed and the protrusion is pushed out toward the back of the hole of the second die block to form the projecting portion.

Abstract: A method is disclosed for roll forming the face pattern onto a pattern forming die having a pattern receiving face, using an initial, and subsequent, pattern forming tool, each with a generally cylindrical pattern defining surface, by relatively and sequentially reciprocating and rotating the pattern defining surfaces and the pattern receiving face while engaging them and urging them to impress the pattern of the pattern defining surfaces into the pattern receiving face of the forming die blank.

Abstract: A foundry sand comprises a blend that includes a silica sand and a zircon aggregate. The zircon aggregate exhibiting a sharp rise in linear thermal expansion coefficient in a temperature band above 1200° C. A method of casting an article in molten metal at a temperature above 1200° C. includes forming a single or multi-part mold for the article from the above-described foundry sand, admitting molten metal to the mold at a temperature such that at least one or more regions of the foundry sand in contact with the admitted metal are heated to a temperature within the temperature band, and cooling the mold and metal to obtain a cast article.

Abstract: The invention relates to the field of casting, and more particularly to a method of producing a ceramic core (1) for casting, said core (1) presenting a shape that includes at least a first lateral protuberance (11), and the method comprising at least a step of injecting a paste comprising a ceramic granulate and a polymer binder into a mold cavity In order to form a part (10) presenting a shape corresponding to the shape of the core (1) together with at least one additional lateral protuberance (15) adjacent to said first lateral protuberance (11), a step of firing the part (10), and a step of eliminating said additional lateral protuberance (15) from the part (10) after said firing step.

Abstract: An automatically-returning mold ejection device and a casting mold comprising the same. The mold ejection device includes a lower-portion part and an upper-portion part and is wherein the lower-portion part comprises returning rod ejection columns fixed to a mold rack base plate; the upper-portion part comprises returning rods corresponding to the returning rod ejection columns, the top ends of the returning rods are fixed to an ejection rod pushing plate and penetrate through an upper mold connecting plate through returning rod flanges, and a lower mold core of a mold is fixed to the mold rack base plate through a screw. An embodiment of the device has the advantages that the self-returning structure is simple, easy to install and convenient to replace and maintain, and has very good practicability.

Abstract: The present disclosure provides a low-pressure cast aluminum wheel mold. The back cavity of a top mold (1) is divided into three parts: the back cavity in a rim area is open, and the wall thickness of the top mold is progressively increased by 15-25 mm from bottom to top; the back cavity in a spoke area is machined in a profile-followed manner, and the top mold has an equal wall thickness of 20-30 mm; at each R angle position where the rim is connected with a spoke, the top mold is provided with a boss (11), the axial wall thickness of the boss (11) is 40-60 mm, and the radial wall thickness is 30-50 mm.

Abstract: A mold flux is used in continuous casting of Ti-containing hypo-peritectic steel so as to prevent longitudinal cracks from forming on a surface of a slab. The mold flux contains CaO, SiO2, an alkali metal oxide and a fluorine compound as major components. f(1), f(2) and f(3), which are calculated from the initial chemical composition, are (1.1?0.5×T) to (1.9?0.5×T), 0.05 to 0.40 and 0 to 0.40, respectively, if the Ti content of the molten steel (mass %) is T. The TiO2 content in the melting state during the casting is no more than 20 mass % and the ratio of the first peak height of perovskite to the first peak height of cuspidine in the mold flux film is no more than 1.0.

Abstract: A dynamic compaction process comprises forming first and second preforms. Forming each preform includes utilizing a container having an interior and an exterior. Filling the interior of the container with a powder material; sealing the container; subjecting the exterior of the container to an instantaneous dynamic compaction, forming a solid powder metallurgy preform encased by the container. The container gets removed from each preform. The process includes inserting the first and second preforms in another container in a predefined pattern; the predefined pattern aligns the first and second preforms creating an interface. The process includes inserting a backstop against the predefined pattern in this container; subjecting the exterior of this container to an instantaneous dynamic compaction. The process includes bonding the first preform and second preform along the interface to form a component precursor; and removing the container from the precursor.

Abstract: A method of manufacturing a turbine shroud segment for a gas turbine engine comprises: metal injection molding (MIM) a shroud segment body with a groove defined in a first lateral side thereof and with a flow restrictor projecting integrally from an opposite second lateral side thereof. The groove is oversized relative to the flow restrictor to provide for a clearance fit between the flow restrictor and the groove of adjacent turbine shroud segments when assembled together in a ring formation. The shroud segment body with the integrated flow restrictor are then subjected to debinding and sintering operations.

Abstract: Disclosed are interfacially modified particulate and polymer composite material for use in injection molding processes, such as metal injection molding and additive process such as 3D printing. The composite material is uniquely adapted for powder metallurgy processes. Improved products are provided under process conditions through surface modified powders that are produced by extrusion, injection molding, additive processes such as 3D printing, Press and Sinter, or rapid prototyping.

Abstract: A metal powder production apparatus includes a molten metal supply section which supplies a molten metal, a cylindrical body which includes an upper part placed on a lower side of the molten metal supply section and a lower part provided on a lower side of the upper part, a fluid jet section which jets a gas (fluid) toward the molten metal, and a cooling liquid outflow section which allows a cooling liquid to flow out along the inner circumferential surface of the upper part. In the metal powder production apparatus, an angle formed by the axial line of the upper part of the cylindrical body and the vertical line is 0° or more and 20° or less, and an angle formed by the axial line of the lower part of the cylindrical body and the vertical line is 0° or more and 20° or less.

Abstract: Pipe machining apparatuses are provided. In one aspect, a locking member may be provided to selectively engage with a frame and a tool carrier of a pipe machining apparatus to prevent movement of the tool carrier relative to the frame. In another aspect, a roller bearing assembly for a pipe machining apparatus may be provided and defines a lubricant cavity in a spindle of the roller bearing assembly. In a further aspect, a coupling member for coupling a pipe machining apparatus to either an exterior surface or an exterior surface of a pipe may be provided. In still another aspect, an adjustable pad is provided for coupling a pipe machining apparatus to a pipe.

Abstract: A solid-lubricated metal cutter and processing method relates to the technical field of metal cutters. A surface texture morphology is worked out on a metal cutter, a solid lubricant is filled into the surface texture morphology, and a convex dam is arranged on the cutter surface on which surface texture morphology is located at a chip flow side. The surface texture morphology has micro-pit and micro-boss features, and can exert antifriction effect of a solid lubricant and anti-adhesion effect of micro-protrusions. The convex dam is arranged at an end of the micro-texture region away from the cutting blade, so that a part of the solid lubricant flows back to the texture region and thereby the utilization efficiency and retentiveness of the solid lubricant are improved.

Abstract: A cutting tool according to an aspect of the present invention is a cutting tool for cutting a rotationally symmetrical surface of a rotating workpiece. The cutting includes the step of feeding the cutting tool in a direction inclined with respect to a rotational axis of the rotationally symmetrical surface, while holding the cutting tool in contact with the rotationally symmetrical surface. In the step of feeding the cutting tool, the cutting tool has a point that is in contact with the rotationally symmetrical surface and the point shifts as the cutting tool is fed. The cutting tool includes: a rake face; a flank face; and a cutting edge connecting the rake face and the flank face. The cutting edge as seen from above the flank face has a shape including at least one arc, and the arc has a radius of curvature of not less than 100 mm and not more than 500 mm.

Abstract: A drilling chuck for operation on an impact drilling spindle, which can be subjected to tangential loading, with a chuck body, which is connected or connectable to the impact drilling spindle in which jaw guides are formed, which are arranged inclined to the chuck axis, in which clamping jaws are guided which can be adjusted by means of a threaded ring, with a clamping sleeve, which is coupled in a torque-transmitting manner to the threaded ring, and with a locking device, which is adjustable between a release configuration which enables a relative rotation of the threaded ring with respect to the chuck body, and a locking configuration which obstructs or prevents this relative rotation. The locking device is formed from a locking sleeve, which is essentially rotationally fixed but axially displaceable with respect to the chuck body, which locking sleeve comprises at least one locking member.

Abstract: A wheel spraying protection device is composed of a hollow mounting rack, an electric cylinder, a tray, an electromagnetic chuck, a sleeve, a piston, a soft rubber cover, a support column, an end cover, high temperature resistant plastic protective plugs, springs and iron posts. The device can play a role in protecting during a wheel spraying process, and solves the problem that a flange face, a center hole and bolt hole conical surfaces are adhered with paint. The device has the characteristics of advanced process, easiness in manufacturing, simple structure, strong function and the like.

Abstract: An infinity jig, infinity plug and a method of forming an infinity joint is presented. The infinity jig has a base with a work surface and an upright with a work surface connected to the base at an approximate perpendicular alignment. The upright includes a plurality of drill guides that are positioned such that a portion of a drill bit inserted into the drill guide extends below the work surface of the base. An infinity hole is formed by using a drill bit having a stop collar to drill partially into a workpiece with a portion of the drill bit exiting a connecting surface of the work piece. To form an infinity joint, two workpieces having infinity holes therein are aligned with one another and an infinity plug is inserted in the aligned infinity holes. The infinity plug pulls the two workpieces together providing a tight and aesthetically pleasing joint.

Abstract: A step drill bit has a cutting head defining a longitudinal axis and having a plurality of steps having different effective diameters. First and second cutting edges are formed in the cutting head. The first cutting edge and the second cutting edge are arranged such that the bit is asymmetric in a plane perpendicular to the longitudinal axis relative to a plane containing the longitudinal axis. A rubbing surface is formed on each step where the rubbing surface extends to approximately the effective diameter of that step such that the first cutting edge, second cutting edge and the rubbing surface forms three points of contact with the side wall of the hole being cut.

Abstract: A cutting and deburring tool according to some embodiments of the disclosure includes a body portion configured to cut a hole in the workpiece, and a workpiece engaging portion and a shaft extending therefrom. The body portion includes a cutting edge configured to cut a hole in a workpiece and deburring cutting edges configured to deburr a first edge of a hole of a workpiece when the body portion is rotated in a clockwise direction or in a counter-clockwise direction after the hole is cut by the body portion. In some embodiments, a second body portion is provided and includes deburring cutting edges configured to deburr a second, opposite edge of the hole when the body portions are rotated in rotated in the clockwise direction or the counter-clockwise direction after the hole is cut by the first body portion.

Abstract: A hole cutter has a cylindrical blade body including a cutting edge and one or more axially-elongated apertures formed within a side wall of the blade body. The axially-elongated aperture is configured to receive a lever, such as a screwdriver, therethrough. Each axially-elongated aperture includes a first fulcrum axially spaced adjacent to the cutting edge, a second fulcrum axially spaced further away from the cutting edge than the first fulcrum, and optionally a third fulcrum axially spaced between the first and second fulcrums. A lever, such as a screwdriver, can be inserted into the aperture and placed against each of the fulcrums to lever slugs out of the interior of the blade body.

Abstract: A cutting tool for performing cutting operations on a workpiece when the cutting tool is rotated about a central axis by a machine tool, the cutting tool includes a generally cylindrical body disposed about the central axis. The generally cylindrical body includes a first end and an opposite second end. The cutting tool further includes a cutting portion and a mounting portion. The cutting portion is disposed at or about the first end of the generally cylindrical body and includes a number of cutting edges structured to engage the workpiece during cutting operations. The mounting portion is disposed at or about the opposite second end of the generally cylindrical body and is structured to be coupled to the machine tool. At least a portion of the generally cylindrical body comprises a molded portion formed via a molding process about the cutting portion in a manner that couples the cutting portion to the generally cylindrical body.

Abstract: A T-slot cutter (1) is a tool for cutting a T-groove in a workpiece, and includes a body (2A) and an insert portion (3). The insert portion (3) is fixed to a leading end portion of the body (2A) using screws (8). The insert portion (3) is configured by overlaying inserts (4) and (5). By changing a combination of the inserts configuring the insert portion (3), a groove width and an angular shape of the T-groove cut in the workpiece can be easily adjusted. On mating faces of the inserts (4, 5), convex portions and concave portions of the mating face of the insert (4) overlap with concave portions and convex portions of the mating face of the insert (5). As a result, the inserts (4, 5) partially overlap with each other in a thickness direction, and thus a protrusion length of the insert portion (3) can be shortened.

Abstract: In a first stage or operation, at least one shear initiation breakthrough opening is formed through the ultra-high strength material sheet at an interior location. A leading terminal end of each of at least two inclined shearing edges of an interior opening shearing tool is positioned in the at least one shear initiation breakthrough opening. The interior opening shearing tool is different from the breakthrough opening forming tool. In a second stage or operation, shearing of the material is initiated from the at least one shear initiation breakthrough opening by advancing the at least two inclined shearing edges of the interior opening shearing tool against the ultra-high strength material sheet and relative to a corresponding shearing tool.

Abstract: A circular saw includes a worktable, a sliding unit including a mounting base mounted on the worktable and providing an accommodation slot and two sliding shafts axially slidably inserted through the mounting base at two opposite sides of the accommodation slot in a parallel manner, and a cutting unit including a saw arm pivotally connected between the two sliding shafts and providing an accommodation portion and a saw blade pivotally mounted at the saw arm. Thus, when the saw arm is in an upper limit position, the accommodation of the saw arm is partially disposed outside the accommodation slot. When the saw arm is in a lower limit position, the accommodation portion is received in the accommodation slot. Subject to the design described above, the circular saw achieves the effects of reduced overall dimension, low vibration and high cutting accuracy.

Abstract: A reciprocating saw serving as reciprocating tool is equipped with a motor, a drive transmission mechanism that converts rotation of the motor into reciprocating motion, a rod that is connected to the drive transmission mechanism and that engages in reciprocating motion, and an upper roller and a lower roller that are capable of rolling and that have depressed portions that are capable of coming in contact with the rod, wherein the cross-section of the rod has no corners, and the depressed portions of the upper roller and the lower roller have hourglass-like profiles.

Abstract: An airflow management system for a table saw includes an elongated hollow member and a dust cap. The elongated hollow member includes a first prong and a second prong, the first and second prongs being configured to be positioned adjacent a saw blade on opposite sides of a saw blade plane in which the saw blade is positioned. The first and second prongs define an opening and a partially enclosed space, in which an airflow channel is defined, therebetween. The dust cap is attached to the elongated hollow member and includes a hose connection fluidly connected to the airflow channel of the elongated hollow member and configured to connect to a vacuum source to pull air from the airflow channel through the hose connection.

Abstract: Systems and methods for a table-mounted stand that houses a hand-held masonry cut-off saw. In some embodiments, the stand provides a fixed mount that keeps the saw stationary while the operator is allowed to feed the work piece through the saw with both hands. In some embodiments, the stand is configured to mount and un-mount the saw without the need for separate tools or time-consuming restraints. In some embodiments, the stand includes a throttle control that is activated via foot control, which allows for two-hand manipulation of the work piece being cut by the saw mounted on the stand. In some embodiments, the two-handed work-piece manipulation provided by the stand allows for precise curved and multi-angled cuts. In some embodiments, the stand is made of lightweight construction (e.g., aluminum) for ease of setup and mobilization.

Abstract: A thermal deburring machine includes a first chamber part, a second chamber part, a closing device, at least one supporting assembly. The second chamber part is separate from the first chamber part, and the first and second chamber parts are configured to receive workpieces to be deburred. The closing device is configured to push the second chamber part and first chamber part together with respect to a closing direction. The supporting assembly is disposed in an annular manner about a transverse axis oriented perpendicularly to the closing direction, is movable relative to the closing device along the transverse axis, and is configured to absorb closing forces from the closing device.

Abstract: In a fixing structure and fixing method of a wire bobbin, the wire bobbin is abutted against the regulating member with the bolt inserted into the insertion hole of the wire bobbin. Then, a nut is inserted into a through hole while being kept inclined so that the axis of the through hole is substantially aligned with the axis of the bolt. Thereafter, the inclination of the nut is returned so that the axis of threaded hole becomes substantially aligned with the axis of the bolt, and then the nut is turned so as to insert part of a tapered portion into the insertion hole.

Abstract: A laser assembly is disclosed. The laser assembly includes a carrier for mounting a semiconductor laser diode (LD) and a capacitor thereon. The carrier provides, in a top surface thereof, a metal pattern having a die area for mounting the LD through a brazing material, a mounting area, and an auxiliary area for absorbing a surplus brazing material. The capacitor is mounted on the mounting area closer to the LD through another brazing material.

Abstract: Method for manufacturing an electrically effective point of contact on the end of an electrical conductor with a plurality of stranded wires composed of aluminum or an aluminum alloy. At the end of the conductor arranged with the vertical course, initially a holder is placed surrounding the conductor so that the front side of the conductor is exposed and the point is accessible from the top. After the point of the conductor is in an axial direction, on the front surface a heat source of a temperature from 2000° C. and higher heats the surface. The material of the individual wires surrounding oxide layer are melted or steamed away until all the wires of the conductor including the same surrounding oxide layer form a one-piece combined aluminum composed contact part. After that the contact part together with the end of the conductor is cooled.

Abstract: A welding process, welding system and welded article are disclosed. The welding process includes generating a first beam from a stationary fusion apparatus and generating a second beam from a rotatable fusion apparatus. The first beam and the second beam form a weld in an article. The welding system includes a stationary fusion apparatus and a rotatable fusion apparatus directed at an article to be welded, the stationary fusion apparatus and rotatable fusion apparatus being arranged and disposed to form a single weld in the article. The welded article includes a first element welded to a second element, the welded article having a decreased root reinforcement, in an inaccessible region, from that of a hybrid stationary fusion apparatus.

Abstract: A welding or cutting system having a power supply with no user interface hardware or software for controlling the operation of the power supply, and a mobile communication device which contains an application allowing for control of the power supply. The mobile device is coupled to the power supply through either a wired or wireless connection.

Abstract: A welding gun includes a gun assembly including a handle having a cable receiving end and also a connecting end. The connecting end includes a tubular end fitting having female threads proximal to the connecting end, and also having an aperture adjacent the female threads. A neck assembly includes a body tube having a welding end and also a connecting end. The connecting end of the body tube is telescopically engageable with the tubular end fitting. The connecting end of the body tube includes an annular recess inwardly spaced from a terminus of the connecting end, and also includes a locking nut and male threads engageable with the female threads. The locking nut and male threads are disposed adjacent the annular recess away from the terminus. A stop is fitable in the aperture and extends into the annular recess in an assembled disposition of the gun.

Abstract: A system for providing a dynamically controlled plasma cutting system. The plasma cutting system includes a proportional valve and a sensing device arrangement and a controller connected to this arrangement. The system is configured to dynamically control gas flow in a plasma torch. The system measures gas pressure at a proportional valve and makes necessary gas pressure adjustments in the system by way of controlling a drive signal sent to the proportional valve to control gas flow.

Abstract: A torch assembly for cutting or spraying applications. The torch assembly includes a torch connector that connects to at least one cable that communicates with a power supply. The torch assembly includes a trigger mounted on the torch assembly to start and stop torch operations. The trigger electrically communicates with the power supply via the at least one cable. The torch assembly also includes a remote switch mounted on the torch assembly to allow an operator to remotely adjust an output of the power supply to a desired output level. The remote switch is electrically coupled to the power supply via the at least one cable.

Abstract: A method of resistance spot welding to join a plurality of overlapping metal sheets, including: dividing a current pattern into two or more steps for welding; before actual welding, performing test welding to store, for each step as a target value, a time variation of an instantaneous amount of heat generated per unit volume and a cumulative amount of heat generated per unit volume; and subsequently, as actual welding, starting welding using, as a standard, a time variation curve of the instantaneous amount of heat generated per unit volume obtained by the test welding, and when a time variation amount of an instantaneous amount of heat generated deviates during any step from the time variation curve by a difference, performing adaptive control welding to control a current passage amount in order to compensate for the difference during a remaining welding time in the step.

Abstract: A friction welding apparatus has first and second clamps for respectively holding first and second parts to be welded by rotary friction welding, a device for producing relative rotation between the first and second clamps and a forge for applying an axial forging pressure to the parts to be welded when the parts are located in the clamps. The second clamp is mounted on a first half of a coupling. A second half of the coupling is movable axially between first and second positions. In the first position the second half of the coupling is engaged with the first half to prevent rotation of the second clamp and enable relative rotation between the first and second clamps. In the second position the second half of the coupling is disengaged from the first half to enable rotation of the second clamp and stop relative rotation between the first and second clamps.

Abstract: A side trimming apparatus including a cutting unit which is installed on at least one side of a steel plate being transferred and trims a side of the steel plate by mechanical cutting and a laser processing unit which is installed in front of the cutting unit and emits a laser beam to a portion of the steel plate to be cut to form a groove at the portion to be cut or preheat the portion to be cut, and a side trimming method using the same are provided.