1013results about How to "Achieve welding" patented technology

The invention discloses an obstacle-crossing all-position automatic welding robot, which comprises a robot moving system (400), a welding equipment system (300), an intelligent sensing system (500), a central control system (100) and a communication system (200), wherein the robot moving system (400) is used for moving the welding robot, the welding equipment system (300) is used for welding, theintelligent sensing system (500) is used for detecting information about obstacles in front of the welding robot, trailing the position of a welding workpiece and controlling welding quality in real time, the central control system (100) is used for controlling the robot moving system (400), the welding equipment system (300) and the intelligent sensing system (500), and the communication system (200) is used for realizing data communication of the robot moving system (400), the welding equipment system (300) and the intelligent sensing system (500) with the central control system (100). The obstacle-crossing all-position automatic welding robot is capable of automatically crossing obstacles and automatically travelling and welding in an all-position manner.

The linear friction welding process between aluminum part and steel part includes the following steps: fixing the steel part in a vibrating fixture; vibrating the steel part vertically by means of a vibrating source and a link rod and at 24-30 Hz frequency and 2.0-2.8 mm amplitude; fixing the aluminum part in a movable fixture; contacting the steel part and the aluminum part mutually with a pushing oil cylinder in the friction pressure of 3.5-5.5 Kg / sq mm for 1.5-2.0 sec; stopping vibration and applying forging pressure of 6.5-12.0 Kg / sq mm for 0.5-1 sec; and cooling naturally to form firm joint between the aluminum part and the steel part. The present invention controls the temperature in friction area at 0.8 time the smelting point of aluminum and applying forging pressure to produce plastic deformation so as to weld by means of re-crystallization and the atomic combination between aluminum and steel.

An image centralizing location method for automatic tube plate welding is characterized in that a camera is used for picking up the image of the mouth of a tube to be welded; the image is then processed and recognized by a computer system to automatically find the center position of the tube to be welded; and finally, the rotary axial line of a welding torch is translated to the center position of mouth of the tube to be welded by an X-axis moving mechanism and a Y-axis moving mechanism to achieve the location. The method can achieve location of the tube plate by using the image centralizing location method without the need of a core rod and an expansion core, so that the method is a contactless accurate location method, which solves the difficult location problem always puzzling the people for a long time. The method has the following characteristics: (1) the method obviates the position error of the tube mouth caused by machine tooling and welding heat and has high location accuracy; (2) the method can achieve the welding of tube plates with the retracted tubes; and (3) the method can achieve the welding of tube plates with a small diameter (phi3 mm), thereby greatly widening the application range of tube plate welding.

The invention relates to a laser welding device and method based on laser cleaning pretreatment.The device comprises a conveying belt, a clamping and adsorption device, a laser cleaning device and a laser welding device.A laser cleaning work region is arranged on the front portion of the conveying belt, and a laser welding work region is arranged on the rear portion of the conveying belt.The laser cleaning device is arranged in the laser cleaning work region, and the laser welding device is arranged in the laser welding work region.The clamping and adsorption device used for fixing butt joint machining welding openings of two to-be-welded metal sheets is adsorbed on the conveying belt.Due to the fact that the laser cleaning process is used for conducting rust and paint removal treatment on the surfaces of to-be-welded materials before welding, and the quality of welded joint seams can be improved.The laser cleaning device and the laser welding device are integrated, the laser cleaning work region and the laser welding work region can be accurately positioned through the machine vision image acquisition and positioning technology, automatic cleaning and welding are achieved, the working efficiency and stability of the device are improved, and therefore welding efficiency is improved.

The invention discloses cleaning-free solid-state scaling powder for aluminum low-temperature soldering and a preparing method. According to the weight percentage, the cleaning-free solid-state scaling powder comprises raw materials of 6.5%-18% of metal film-forming agents, 5%-18% of organic carriers, 0.1%-1.8% of corrosion inhibition agents and the allowance of film removing active agents. The film removing active agents are composite salt of organic amine and acid. The cleaning-free solid-state scaling powder is suitable for lead-free solder wires with solid-state scaling powder contained in a core, and the powder can be used for automatic welding, manual soldering iron welding or flame spraying welding. The core-contained solder wires prepared with the scaling powder have the advantages that tinning speed is high, splashing is low, irritating smoke is avoided, post-welding residues do not have corrosiveness, a welding point has great electrochemical corrosion resistance, a contact service time is long, the wires are suitable for assembling welding of an aluminum coated layer circuit board and an aluminum soldering pin electronic element and brazing of an aluminum electric cable wire, an aluminum radiator and aluminum heat exchanging equipment.

The invention belongs to a machining process device of an aerospace product, and in particular discloses a positioning support device used for stirring, rubbing and welding a circular seam of a flange disc of a top cover of a storage box. The machining process device comprises a positioning supporting rotary support, wherein a circular base plate is arranged above the positioning supporting rotary support; an outer pressing ring is arranged above the circular base plate; round holes coaxial with a central hole at the lower bottom surface of the positioning supporting rotary support are arranged in the circular base plate and a center of the outer pressing ring; a central shaft is arranged inside the hole; the lower end of the central shaft is fixed on the positioning supporting rotary support; an outer clamping ring is arranged on the circular base plate; the outer clamping ring is connected with the outer pressing ring through a fastening structure; and a lock wire nut is arranged at the top end of the central shaft. The outer clamping ring, the outer pressing ring and the unique fastening structure have a positioning clamping function to a whole welding product; the outer clamping ring and the central shaft are concentric so as to have a function of positioning a rotation center; a design of the fastening structure has a transition function to connection of a whole positioning support device in a mode that bearing outer pressure is converted into a clamping force, and thus the machining process device is applicable to requirements on high precision in welding and assembling.

The invention discloses glasses plate and a cutting ring used for a concrete delivery pump, comprising a base and a hard alloy ring arranged on the cutting surface of the base; the hard alloy ring radially consists of a plurality of hard alloy blocked; the internal edge of the hard alloy block is folded and extends into a material delivery hole along the internal wall of the material delivery hole which is arranged on the base; a hard alloy cirque attached to the internal wall of the material delivery hole is assembled in the material delivery hole of the base; a linear spacing is reserved between adjacent hard alloy blocks in the material delivery hole at the cutting surface; the hard alloy blocks and the adjacent surfaces of the base are welded together; the linear spacing between adjacent hard alloy blocks are filled with welding flux. The glasses plate and cutting ring has good anti-wear and anti-shock performance and long service life.

The invention discloses a welding machine for shoemaking. The welding machine for shoemaking comprises a machine base and a rotatable welding table arranged on the machine base; one side of the machine base is provided with a rack; the rack is provided with a sliding rail in the vertical direction; the sliding rail is provided with a support; the sliding rail is also provided with a locking block; two symmetrical sides of the support are respectively provided with a first guide rail; one of the two first guide rails is provided with a first slider; the first slider is provided with a servo motor; the first slider is also provided with a second guide rail; the second guide rail is provided with a second slider; the second slider is provided with another servo motor; a welding gun is arranged below the second slider; the second slider is also fixedly provided with an exhaust pipe. The defects of the prior art can be solved by the welding machine disclosed by the invention; by arranging the rotatable welding table and the welding gun capable of moving on a two-dimensional surface, the occupied area of the machine is reduced, the welding manner is expanded, and the practicability is high.

The invention discloses a method for processing an open-web sharp-angled rhomboid tube. The open-web sharp-angled rhomboid tube comprises a first side, a second side, a third side and a fourth side which are sequentially connected, wherein the fourth side and the first side are in butt joint to form a sharp angle. The processing method comprises the following steps of: A, rolling areas corresponding to the first side and the fourth side on two sides of a steel band by a roller to enable partial areas of the first side and the fourth side to become arc faces; B, rolling and bending the junction of the first side and the second side and the junction of the fourth side and the third side; C, rolling and bending the junction of the second side and the third side by the roller to enable an inclined angle of the second side and the third side to be gradually reduced until the first side and the fourth side are nearly closed; D, carrying out stitch welding to completely close and weld the first side and the fourth side together; E, scraping a vertex angle at the welded part into a sharp angle by a scraper; and F, reshaping the first side and the fourth side into a plane and simultaneously reshaping the sizes and inclined angles of various sides to the final requirements.

The invention discloses a curve welding seam welding technology based on line structured light and oriented to an oblique crossed tube. According to the method, machine version and robot kinematics are combined very well, so that the problems that the process of obtaining curve welding seam feature points is not flexible, and a curve track model are difficult to establish are solved. The curve welding seam welding technology comprises the following steps of: firstly, controlling a six-degree-of-freedom robot, enabling a robot end to drive an industrial camera to shoot a curve welding seam image with the line structured light; and then, carrying out a series of image pre-treatment and feature point extraction work to obtain space coordinates of all feature points of a curve welding seam, and fitting through a B sample curve, and finally obtaining a smooth space curve. Besides, the gesture of a welding gun can be changed in real time according to included angles at the two sides of a workpiece when the welding gun is used for welding a curve, so that the welding process and welding requirements are improved better.

The invention provides a special Ti-6Al-3V welding wire for Ti-6Al-4V ELI titanium alloy and a machining process of the special Ti-6Al-3V welding wire. The special Ti-6Al-3V welding wire includes the alloy components of, by weight, 5.5-6.75% of Al, 2.5-4.5% of V, smaller than 0.20% of Fe, smaller than 0.13% of O and the balance Ti. The machining process of the special Ti-6Al-3V welding wire includes the following steps that a, the raw material weight ratio of Al-V intermediate alloy to pure metal aluminum to titanium sponge is calculated according to the design components of the welding wire, and the raw materials are smelted into ingots through vacuum arc remelting; b, the ingots are forged into bar billets; c, the bar billets are rolled into bars; d, the bars are rolled into wire billets; e, the wire billets are stretched; f, the wire billets are straightened, descaled, polished and ground; g, the wire billets are thermally treated and then stretched into wires; h, vacuum annealing is conducted on the wires after alkaline washing and acid washing are conducted on the wires; i, the wires are straightened and then cut into straight wires; j, the straight wires are ground into finished products. Through the adjustment of the content of main alloy elements and impurity elements and the reasonable production process, the titanium welding wire with better mechanical performance matching performance with the Ti-6Al-4V ELI titanium alloy is produced, and the performance of a weld joint of the welding wire can meet the index requirements of a manned cabin.

The invention provides an aluminum-steel dissimilar metal riveting and welding composite connection method. The aluminum-steel dissimilar metal riveting and welding composite connection method comprises the steps that pre-drilling is conducted at a lap joint position between an aluminum plate and a steel plate to be connected, so that a pre-drilled hole is obtained; a rivet penetrates through the pre-drilled hole, the rivet head end face of the rivet is made flush with the surface of the aluminum plate, and the other end of the rivet is higher than the surface of the steel plate; primary downward pressing is conducted on the rivet higher than the surface of the steel plate with a rotating pin-free stirring head, and the end face of the pin-free stirring head is made to make contact with the surface of the steel plate; and secondary pressing continues to be conducted, the rivet is made to form a countersunk rivet in the steel plate. By the adoption of the aluminum-steel dissimilar metal riveting and welding composite connection method, riveting and diffusive welding composite connector of the aluminum-steel dissimilar metals can be obtained, the problems that during fusion welding of aluminum-steel dissimilar materials, too much brittle intermetallic compounds are generated, and the seal performance and fatigue performance of a connector are poor in riveting are solved, dual advantages of riveting and welding are achieved, and the tensile strength and fatigue performance of the connector are improved.

The invention provides a non-electrolyte tantalum electrolytic capacitor positive and negative electrode patch welding process. According to the process, a positive lead and a negative lead of the electrolytic capacitor are completely removed; and then the positive and negative patches are fixed on the positive and negative ends of the electrolytic capacitor through electrolytic capacitor plasma ball welding, electrolytic capacitor patch spot welding and electrolytic capacitor patch full welding, so that the non-electrolytic tantalum electrolytic capacitor with the positive and negative patchfixed structure is obtained. The fixed structure of the positive and negative patches is obtained by adopting the process disclosed by the invention, so that the contact area of the product and a circuit board is increased when the product is welded. The mechanical strength of the product in the use process is increased, and the use reliability of the product in the structure is ensured. Operationis convenient, the production efficiency can be greatly improved, and the product percent of pass is increased.

The invention relates to a robot welding system, in particular to a box robot welding system. The box robot welding system comprises a positioner headstock, a tool clamp, a robot sliding table walking mechanism, a robot welding system body, a positioner tail frame and a positioner base. The positioner headstock and the positioner tail frame are mounted on the positioner base. The positioner tail frame can move in the direction close to or away from the positioner headstock. The two ends of the tool clamp are connected with the positioner headstock and the positioner tail frame through fast connecting devices correspondingly. The robot sliding table walking mechanism is arranged on one side of the positioner base. The robot welding system body is arranged on the robot sliding table walking mechanism. According to the box robot welding system, the servo drive sliding table walking mechanism can do X-axis linear motion, and positioner and workpiece rotation and a robot welding gun are matched for achieving welding in various angles.

The invention relates to an electronic packaging braze welding material and a technology thereof, in particular to a low temperature lead-free welding material used for electronic elements, which belongs to the technical field of metallic material engineering. The invention can replace high temperature welding, and ensure the welding spot to have good electrical conductivity, high temperature resistance and impact resistance. For the welding material, kaiserzinn welding powder or pure tin powder and high melting point metal powder Ag, Cu, Ti and Ni are mixed according to certain proportion, and solder paste is prepared by adding appropriate flux; or kaiserzinn welding powder and metal powder Ag, Cu, Ti and Ni are mixed according to certain proportion to prepare solder paste, so as to weld high melting point weld layer through lead-free solder paste at low temperature.

The invention discloses a pipe cutting and welding all-in-one machine. A clamping chuck is arranged on the end face of a driving headstock and connected with a rotary servo motor driving the clamping chuck to rotate. A plurality of movable lifting brackets are mounted on a fixed base. Each movable lifting bracket comprises a movable lifting base, a lifting riding wheel fixed to the movable lifting base, a traveling driving motor driving the movable lifting base to move along a linear guide rail, and a lifting driving motor driving the lifting riding wheel to move vertically. A cutting assembly comprises a cutting head supporting plate and a cutting head fixed to the cutting head supporting plate. A welding assembly comprises a welding gun head supporting plate and a welding gun head which is fixed to the welding gun head supporting plate. The cutting head supporting plate and the welding gun head supporting plate are both arranged on a movable sliding base and can move along the movable sliding base. The pipe cutting and welding all-in-one machine is suitable for pipes with different diameters and different lengths, a main pipe and a branch pipe can be welded together, two main pipes can also be welded together, and the applicability is high.

The invention belongs to a high-energy beam heat treatment technology which is suitable for the postweld dual heat treatment on the electron beam welding structures of various titanium alloys and high-temperature alloy materials. The invention relates to a postweld dual electron beam local heat treatment method for a high-temperature resistant metal material. The method improves an electron beam local heat treatment temperature, enlarges an application range of the technology and can realize the multiple heat treatment processing of parts; the electron beam welding and the dual electron beam local heat treatment integrated processing after the welding are completed in one vacuum cycle, thereby improving production efficiency, being clean and energy-saving and saving cost; the method can solve the actual problem that the electron beam of a high-temperature titanium alloy engine member can not be subjected to whole heat treatment and improve tissue performance of a connector and lasting performance of the connector.

The invention relates to an axial friction welding process method of a high-nitrogen austenitic stainless steel and non-magnetic drill collar and belongs to the field of preparation of oil-gas drilling tools. The method comprises the application steps: workpieces made from high-nitrogen austenitic stainless steel are clamped into a friction welding machine, then, workpieces in a clamp of a rotating end and a clamp of a moving end are welded, the workpiece of the moving end moves towards the workpiece of the rotating end when welding is started, at this time, the workpiece of the rotating end starts to rotate, the workpiece of the rotating end and the workpiece of the moving end start to produce heat due to friction under the action of frictional pressure after contact, rotation is stoppedwhen a friction amount of deformation reaches a set value, upset forging is started, upset forging pressure is applied to the workpieces along the axial direction of the workpieces and is maintained,and a workpiece is taken out after the upset forging pressure is unloaded, thereby obtaining the non-magnetic drill collar. According to the method, the non-magnetic drill collar is processed and repaired by an axial friction welding method, so that the problems, i.e., material waste, relatively high cost and relatively low production efficiency of the existing processing methods are improved, andthe problem that a failed drill collar is difficult to repair is solved.

The invention relates to automatic corrugated pipe welding equipment for a transformer and a welding method thereof, and belongs to the welding technical field of a corrugated pipe for a transformer. The automatic corrugated pipe welding equipment for the transformer comprises a rotary workbench, a two-dimensional numerical control platform, a laser outline measuring instrument, an R axis, a welding machine tool and a control system; the rotary workbench is fixed on the workbench surface of the machine tool; one end of the R axis is arranged on the welding machine tool body in a sliding way, and both sides of the other end of the R axis are respectively provided with the laser outline measuring instrument and the two-dimensional numerical control platform which slides along the R axis; a welding torch is connected onto the two-dimensional numerical control platform in a sliding way; the laser of the laser outline measuring instrument is in parallel with the axis of the welding torch; the rotary workbench, the two-dimensional numerical control platform and the welding machine tool body are respectively connected with the controller of the control system through motors; and the laser outline measuring instrument is connected with the industrial computer of the control system. The automatic corrugated pipe welding equipment for the transformer and the welding method thereof solvethe difficult problem of the manual welding of a large thin-wall corrugated pipe, reduce the labor intensity of a welder, improve the production efficiency, and simultaneously ensure the uniformity and the stability of the welding quality.

The present invention relates to pharmaceutical equipment technology, and is especially a system for producing powder-liquid double cavity transfusion soft bag of co-extruded polyene hydrocarbon film. The production system consists of a frame, a power set, a control set, a bag making and liquid filling machine, and a powder packing and sealing machine. The bag making and liquid filling machine includes a bag making mechanism and a liquid filling mechanism with separate circular synchronous conveying belts, as well as a bag transferring mechanism between the bag making mechanism and the liquid filling mechanism. The production system has compact structure and reliable performance, and may be used for making powder-liquid double cavity transfusion soft bag, filling and sealing the liquid preparation, filling and sealing powder preparation, etc.

The invention provides a flange sealing groove inner surface annular all-position TIG (Tungsten Inert Gas) automatic surface welding equipment and a welding method thereof, belonging to the technical field of automatic welding equipments and welding methods. The automatic welding equipment mainly comprises a position regulation mechanism and a TIG rotary welding head, wherein the TIG rotary welding head is used for regulating a surface welding position of a flange sealing groove through the position regulation mechanism. An electric control device is used for setting parameters such as welding current, a wire feed speed, a welding speed and arc voltage control according to the circumferential position located by the welding head and a cycle of 12 preset partitions so as to carry out welding control. The rotational radius of the welding head can be automatically changed inwards or outwards according to set width after a cycle of welding is finished, so that surface welding in the flange sealing groove is realized, and surface welding on the side surface of the flange sealing groove is carried out after an angle of a welding gun is changed until one end surface is piled up. The surface welding surface is smooth, so that the problems of cutter beating and long processing time in the process of processing the flange sealing groove by manual surface welding at a later stage are avoided, surface welding quality is superior to quality of manual surface welding, and the problem that a product is repaired due to defects after manual surface welding is reduced.

The invention provides a horizontal fillet welding seam angle-wrapping process suitable for automatic welding, and the horizontal fillet welding seam angle-wrapping process is suitable for unit vertical welding in a ship building process, adopts gas-shielded welding to carry out automatic welding to complete horizontal fillet welding seam angle-wrapping welding for a bottom plate and reinforcing ribs, and belongs to the technical field of gas-shielded welding automatic welding. According to the technical scheme adopted by the invention, two robots drive two welding guns; arcs are initiated from the two sides to drive the welding guns to move to the middle of the reinforcing ribs, so that angle-wrapped welding is completed, welding seams are full, and dimensions of the welding seams meet requirements. The horizontal fillet welding seam angle-wrapping process provided by the invention has the positive effects of reducing times of overlap welding, arc initiating and arc extinguishing, avoiding defects, reducing interferences of the welding guns and workpieces, especially reinforcing ribs with circular-arc holes in end parts, expanding automatic welding cover range and greatly simplifying trial teaching workload. The horizontal fillet welding seam angle-wrapping process is wide in scope of application, easily realizes automatic welding, has relatively low requirements on workpiece pairing, and improves welding quality and working efficiency.

The invention relates to a robot welding system, in particular to a frame robot welding system. The frame robot welding system comprises a position changer headstock, a head end tool clamp, a position changer tailstock, a robot sliding table traveling mechanism, a robot welding system and a tail end tool clamp, wherein the head end tool clamp and the tail end tool clamp are respectively mounted on flange plates of the position changer headstock and the position changer tailstock rotatably and are used for clamping a frame; the robot sliding table traveling mechanism is arranged on one side of the position changer headstock and the position changer tailstock; and the robot welding system is arranged on the robot sliding table traveling mechanism, and is driven by the robot sliding table traveling mechanism to linearly move along an X axis. The servo-driven sliding table traveling mechanism can linearly move along the X axis, and by rotation of the workpiece driven by a position changer and a robot welding gun, welding at various angles is realized.

The invention belongs to the field of solder and welding technology and particularly relates to a method of low-temperature use of high-temperature solder; the method comprises the following steps of: a. the preparation of the solder: high-temperature alloy powder consists of more than one of the alloy from SnPb, SnBi, SnAg, SnAgCu, SnZn, SnCu, and SnSb and more than one of Ni, Ag, Cu and Ti are mixed and a soldering agent is added so as to prepare the solder, wherein, the quality percentage is Ni: 3 to 5 percent, Ag: 10 to 21 percent, Cu: 12 to 15 percent and Ti: 3 to 6 percent; b. the preparation of the objects to be welded and adding the solder to the positions to be welded; and c. according to the diferent types of the solder, the solder and the objects to be welded are heated to the temperature between 230 DEG C to 350 DEG C, then cooled, thus realizing the welding of the solder. The welding method has the excellent anti-collapsement performance in the welding process. The welding spot or the welding surface after welded has good wire performance and thermal conductivity.

The invention discloses an LTCC-based CGA integrated packaging structure and a realization method thereof. An LTCC technology and a CGA technology are combined, and a CGA array is manufactured on the bottom surface of an LTCC substrate by adopting a tool through a welding mode; the LTCC is used as an interconnecting substrate, a packaging body and a passive element integrated carrier of the module at the same time; and the whole region or a partial region on the substrate is welded with a metal surrounding frame, and airtight packaging in the metal surrounding frame region can be realized through parallel seam welding or laser melting seaming ways. The packaging structure is mainly used for the field of system integration as a packaging platform; by adoption of the CGA, high-reliability interconnection between the module and the exterior is realized, so that large module packaging dimensions can be realized; by adoption of the LTCC, integration of active devices and passive elements can be realized at the same time, so that system integrated density is greatly improved; by virtue of the high-precision welding of the metal surrounding frame, high packaging efficiency is realized; due to the position and shape changes of the metal surrounding frame, different applications of electromagnetic shielding, airtightness and the like can be realized; and in addition, the packaging structure has high fundamentality and expandability.

The invention provides a welding method of a tungsten titanium target module. The welding method comprises the following steps: a tungsten titanium target, a copper back plate and a middle layer are provided; the tungsten titanium target, the middle layer and the copper back plate are positioned in a vacuum ladle, and the surfaces to be welded of the middle layer and the tungsten titanium target are bonded with the surface to be welded of the copper back plate; the tungsten titanium target, the middle layer and the copper back plate are welded to form the tungsten titanium target module by using a hot isostatic pressing process; and after the welding is finished, the vacuum ladle is cooled, and the vacuum ladle is removed to obtain the tungsten titanium target module. The welding method can realize welding between the tungsten titanium target and the copper back plate, and is higher in welding efficiency; and the formed tungsten titanium target module is higher in welding strength and low in deformation to satisfy the demands of long-time stable target production and use.

The invention relates to a welding jig, in particular to a circular seam laser welding jig for thin-walled aluminum alloy end socket flange plates. The circular seam laser welding jig aims to solve the problems that as no special circular seam laser welding jig for the thin-walled aluminum alloy end socket flange plates exists in the prior art, welding deformation is serious, and the welding accuracy cannot meet the welding requirement. An inner platen is located at the upper end face of an inner platen base, a first circular center groove corresponds to a second circular center groove in an up-and-down mode, a first annular groove is machined in the upper end face of the outer edge of the inner platen base in the circumferential direction, a second annular groove is formed in the lower end face of the inner ring of an outer platen in the circumferential direction, the second annular groove of the outer platen is combined with the first annular groove in a pressed mode, an annular interval is reserved between the outer platen and the inner platen, a plurality of hinge bases are evenly distributed and fixedly installed at the outer edge of a lower disc in the circumferential direction, the lower end of each screw rod is hinged to the corresponding hinge base, and the upper end of each screw rod penetrates through the outer edge of the outer platen and is in threaded connection with a second nut. The circular seam laser welding jig is used for welding the thin-walled aluminum alloy end socket flange plates.

The invention relates to a welding tool for a chassis frame of a maize harvesting machine, in particular to a flexible robot welding tool for the chassis frame of the maize harvesting machine. The flexible robot welding tool for the chassis frame of the maize harvesting machine is low in machining and manufacturing cost and convenient to clamp, labor intensity of workers is low, the locating precision of transverse beams and longitudinal beams of the frame can be guaranteed, welding deformation can be reduced, flexibility is good, interference cannot be generated during welding after overturn, and a front face and a back face can be welded on one tool through one-time locating. The flexible robot welding tool for the chassis frame of the maize harvesting machine has the advantages that the workers can load and unload workpieces conveniently, and labor intensity is low; the position of a frame transverse beam locating mechanism and the position of a frame longitudinal beam locating mechanism on a bearing frame can be adjusted continuously, welding of frames of different series and different types can be achieved, and flexibility is good; overturn of the tool can be achieved through a welding positioner, and robot welding is achieved; the machining and manufacturing cost is low, operation is convenient, working efficiency is improved, and needs of enterprises are met.

The invention discloses a welding platform for automobile part machining. The welding platform comprises a rotating platform, a supporting platform, supporting vertical plates, a right rotating rod and clamping mechanisms, the rotating platform is rotatably erected on the supporting platform through supporting sliding blocks which are fixedly arranged on the bottom of the rotating platform in a welded manner, the bottom end of the middle of the supporting platform is fixedly provided with a first motor used for driving the rotating platform to rotate, the top of the rotating platform is symmetrically and fixedly provided with the supporting vertical plates in a welded manner, a left rotating rod is rotatably erected on the supporting vertical plate located at the top of the left side of the rotating platform, the right rotating rod is rotatably erected on the supporting vertical plate located at the top of the right side of the rotating platform, and the right rotating rod and the leftrotating rod are both fixedly provided with the clamping mechanisms used for clamping and fixing automobile parts. By means of the welding platform for the automobile part machining, clamping and fixing on the automobile parts can be realized, the fixing effect is good, operations are convenient and fast, furthermore, multi-angle and all-around welding on the automobile parts can be realized, andthe work efficiency is high.

The invention provides an integral welding workstation and a vehicle production line, and relates to the technical field of vehicle manufacturing equipment. The integral welding workstation comprisesa general gripper library, a welding clamp library, a robot, a general ground positioning device, a general abutting positioning device and a control device; the general ground positioning device is used for positioning a lower vehicle body positioning trolley; the general abutting positioning device is arranged near the general ground positioning device, and is used for positioning and mounting apositioning gripper; the positioning gripper can position and grab a lower vehicle body assembly; the robot is arranged near the general gripper library, the welding clamp library and the general abutting positioning device; under the control effect of the control device, the robot can grab the positioning gripper, and the positioning gripper positions or grabs the lower vehicle body assembly; and the robot can grab welding clamps from the welding clamp library to realize the welding process of the lower vehicle body assembly. The integral welding workstation relieves the problems of incapability of switching fixtures, weak equipment generality and high cost in the prior art.