Positioning welding equipment and method for gear box body machining

Abstract

The invention belongs to the technical field of welding equipment, particularly relates to positioning and welding equipment and method for gear box body machining, and aims at solving the problem that the welding seam positioning effect of existing positioning and welding equipment for gear box body machining is poor, the following scheme is provided, the positioning and welding equipment comprises a tool table and a cantilever frame, and the cantilever frame is fixedly connected to the upper side of the tool table; a cantilever frame is arranged on the tool table, a welding gun is arranged on the cantilever frame, a flaring is formed in the tool table, a mounting box is arranged in the flaring, a welding seam positioning module is arranged on the mounting box, a supporting frame is fixedly connected to the bottom of the tool table, and four symmetrical clamps are arranged on the welding seam positioning module. According to the positioning and welding equipment and method for machining the gear box body, the device can adjust the posture and the angle of the clamped and fixed workpiece, so that the device effectively positions a welding seam formed after the gear box workpiece is folded, the welding seam and a welding gun are always located at the optimal welding angle, and the welding quality and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and in particular to a positioning and welding equipment and method for machining a gear box body. Background Art

[0002] A gear box is a device that adjusts the rotational speed, torque, and power transmission direction in a mechanical transmission system through a combination of gears. It is widely used in fields such as automobiles, industrial machinery, wind power generation, and robots, and is one of the core components for power transmission.

[0003] When the positioning and welding equipment for machining a gear box body welds the gear box body, it usually needs to use a fixture to fix the workpiece. However, after the fixture on the existing welding equipment fixes the workpiece, the workpiece will be in a fixed posture. After welding a weld seam, it is necessary to loosen the workpiece and readjust it, which will affect the positioning accuracy of the welding equipment for the weld seam position and the welding quality of the weld seam. Summary of the Invention

[0004] The present invention discloses a positioning and welding equipment and method for machining a gear box body, aiming to solve the technical problem of poor weld seam positioning effect of the existing positioning and welding equipment for machining a gear box body in the background art.

[0005] A positioning and welding equipment for machining a gear box body proposed by the present invention includes a tooling table and a cantilever frame. A cantilever frame is fixedly connected to the upper side of the tooling table. A welding torch is arranged on the cantilever frame. An expansion opening is formed on the tooling table. An installation box is arranged in the expansion opening. A weld seam positioning module is arranged on the installation box. A support frame is fixedly connected to the bottom of the tooling table. Four symmetric clamps are arranged on the weld seam positioning module. Adaptive fixing modules are arranged outside the clamps;

[0006] The weld seam positioning module includes an arc-shaped deflection frame and two symmetric brackets. Lifting plates are slidably connected to the brackets. Stable plates are arranged on the opposite sides of the two lifting plates. The four clamps are all located between the two stable plates. The arc-shaped deflection frame is fixedly connected to the bottom of the installation box. The weld seam positioning module is used to adjust the height or angle after clamping and fixing the workpiece so that the weld seam on the workpiece faces the welding torch at the best welding angle, thereby improving the welding effect and welding efficiency of the welding torch;

[0007] The adaptive fixing module includes a plurality of equally spaced contact blocks and two symmetric suction cups. The plurality of contact blocks are all located between the two clamps on the same side. The adaptive fixing module is used to improve the clamping and fixing ability of the weld seam positioning module for workpieces with different sizes and shapes, so as to improve the clamping stability of the device for workpieces with different sizes and shapes, thereby improving the adaptability of the device.

[0008] In a preferred embodiment, two symmetric convex rafters are fixedly connected to the outside of the arc-shaped deflection frame. Circular rods are fixedly connected to the opposite sides of the two convex rafters. The outside of the circular rods are both movably connected to the inner wall of the flared opening. A U-shaped frame is fixedly connected to the inner wall of the arc-shaped deflection frame. A counterweight is suspended outside the U-shaped frame. And a reserved groove is provided on one side of the arc-shaped deflection frame. A rack is fixedly connected to the bottom inner wall of the reserved groove. A circular opening is provided on the support frame. A first motor is fixedly connected inside the circular opening. The output end of the first motor is connected to a gear through a coupling. The gear meshes with the rack. A linear motor is fixedly connected to the outside of the cantilever frame. The output end of the linear motor is fixedly connected to a second hydraulic rod. The output end of the second hydraulic rod is fixedly connected to a welding torch; Two symmetric rectangular grooves are provided on the upper side of the installation box. The outside of the two brackets are respectively slidably connected to the inner walls of the two rectangular grooves. Hole grooves are provided on the brackets. The same diamond-shaped rod is slidably connected inside the two hole grooves. The two ends of the diamond-shaped rod are respectively fixedly connected to the inner walls of the two sides of the installation box. Two symmetric first springs are wound around the outside of the diamond-shaped rod. One end of the first spring is fixedly connected to the outside of the bracket on the same side, and the other end is fixedly connected to the inner wall of the installation box. And a second motor is fixedly connected to the inner wall of the installation box; The output end of the second motor is connected to a circular shaft through a coupling. Two symmetric winding rollers are fixedly connected to the outside of the circular shaft. Steel wire ropes are wound on the two winding rollers. The winding directions of the two steel wire ropes are opposite. The ends of the steel wire ropes away from the winding rollers are respectively fixedly connected to the outside of the brackets on the same side. And a third motor is fixedly connected to the opposite sides of the two brackets. The output ends of the third motors are connected to lead screws through couplings. Convex seats are provided on the outside of the lead screws. The convex seats and the opposite sides of the same-side lifting plates are fixedly connected; Hole openings are provided on the two lifting plates. Shaft rods are movably connected inside the hole openings. The shaft rods and the opposite sides of the same-side stabilizing disks are fixedly connected. Driving motors are fixedly connected to the outside of the lifting plates. The output ends of the driving motors are respectively connected to one side of the shaft rods on the same side through couplings. And two symmetric cutting grooves are provided on the opposite sides of the two stabilizing disks. Moving blocks are slidably connected inside the cutting grooves. The moving blocks and the opposite sides of the same-side clamps are in contact. Cuts are provided on the inner walls of the cutting grooves. Short shafts are slidably connected inside the cuts. Rotating frames are movably connected to the outside of the shaft rods. Two circumferentially equidistributed curved grooves are provided on the rotating frames. The inner walls of the curved grooves are both slidably connected to the outside of the short shafts on the same side; The two rotating frames are movably connected to the opposite sides of the same-side stabilizing disks. Tooth rings are fixedly connected to the outside of the rotating frames. Locking buttons are clamped to the outside of the tooth rings. Thin shafts are fixedly connected to the sides of the locking buttons close to the stabilizing disks. The outside of the thin shafts are movably connected to convex platforms. The convex platforms and the outside of the stabilizing disks are fixedly connected. First torsion springs are fixedly connected to the outside of the thin shafts. The ends of the first torsion springs away from the thin shafts are fixedly connected to the outside of the convex platforms.

[0009] In a preferred embodiment, on one side of each of the two clamps located on the same side, a placement frame is fixedly connected. Three notches with different lengths are formed in the placement frame. The inner walls of the notches are all slidably connected with limiting rods. The contact blocks are all located in the placement frame. The outer part of the contact block that is farthest from the moving block among the four contact blocks in the same placement frame is fixedly connected to the inner wall of the placement frame. Circular openings are formed in the three contact blocks close to the moving block. The inner walls of the circular openings are all movably connected to the outer part of the limiting rod on the same side. Different lengths of second springs are respectively fixedly connected to the outer parts of the three limiting rods on the same side. The ends of the second springs away from the limiting rods are all fixedly connected to the outer part of the placement frame on the same side; on the side of the four moving blocks away from the stable disc, connection rods are fixedly connected. Openings are formed in the clamps. The inner walls of the openings are all slidably connected to the outer parts of the connection rods on the same side. Grooves are formed on the sides of the connection rods away from the stable disc. Hydraulic rods I are fixedly connected in the grooves. The output ends of the hydraulic rods I are all fixedly connected to the inner walls of the openings on the same side. Symmetrical rectangular openings are formed in the two stable discs. Movable blocks are slidably connected in the rectangular openings. Sliding rods are slidably connected to the movable blocks. Third springs are wound around the outer parts of the sliding rods. One end of each third spring is fixedly connected to the outer part of the movable block, and the other end is fixedly connected to the outer part of the sliding rod on the same side; the ends of the sliding rods away from the third springs are all fixedly connected with connection frames. The connection frames are all movably connected to the outer parts of the suction cups on the same side. Thin rods are fixedly connected to the outer parts of the suction cups. Torsion springs II are fixedly connected to the outer parts of the thin rods. The ends of the torsion springs II away from the thin rods are all fixedly connected to the outer parts of the connection frames on the same side. Suction pumps are arranged on the suction cups. The output ends of the suction pumps are all connected to the suction cups on the same side through conduits. Two symmetrical strip plates are arranged outside the rectangular openings. The strip plates are fixedly connected to the sides of the stable discs on the same side opposite to the strip plates. Narrow grooves are formed in the strip plates. Two symmetrical short plates are fixedly connected to the sides of the movable blocks close to the suction cups. Slot holes are formed in the short plates. Long rod screws are slidably connected in the slot holes. The outer parts of the long rod screws are slidably connected to the inner walls of the two narrow grooves on the same side. Nuts are rotationally connected to the outer parts of the long rod screws through external threads. The nuts are all in contact with the sides of the strip plates on the same side opposite to the strip plates.

[0010] A positioning and welding method for machining a gearbox body, using a positioning and welding device for machining a gearbox body as described above, includes the following steps:

[0011] Step 1: Place the two gearbox workpieces to be welded into the device respectively, and use the adaptive fixing module on the clamp to clamp and fix the workpieces;

[0012] Step 2: Use the weld seam positioning module to adjust the position and posture of the workpieces, so that the workpieces are brought together to form a weld seam. Start the linear motor, the hydraulic rod II and the welding torch, so that the welding torch can weld and machine the gearbox workpieces along the weld seam.

[0013] As can be seen from the above, a positioning and welding device for machining a gear box body provided by the present invention can adjust the posture and angle of a workpiece being clamped and fixed, so that the device can effectively position the weld formed after the gear box workpiece is closed, and keep the weld and the welding torch at the best welding angle all the time, improving the welding quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 is a front view structural schematic diagram of the present invention;

[0016] Figure 3 is a structural schematic diagram of the weld positioning module of the present invention;

[0017] Figure 4 is a structural schematic diagram of the arc-shaped deflection frame of the present invention;

[0018] Figure 5 is a structural schematic diagram of the diamond-shaped rod and the bracket of the present invention;

[0019] Figure 6 is a structural schematic diagram of the lifting plate of the present invention;

[0020] Figure 7 is a structural schematic diagram of the rotating frame of the present invention;

[0021] Figure 8 is a structural schematic diagram of the adaptive fixing module of the present invention;

[0022] Figure 9 is a structural schematic diagram of the placement frame of the present invention;

[0023] Figure 10 is a structural schematic diagram of the sliding rod of the present invention;

[0024] In the figure: 1, tooling table; 2, installation box; 3, support frame; 4, fixture; 5, cantilever frame; 6, welding torch; 7, weld positioning module; 701, arc deflection frame; 702, convex rafter; 703, reserved groove; 704, rack; 705, motor 1; 706, gear; 707, U-shaped frame; 708, counterweight; 709, rectangular groove; 710, diamond rod; 711, bracket; 712, lifting plate; 713, motor 2; 714, wire winding roller; 715, steel wire rope; 716, spring 1; 717, motor 3; 718, lead screw; 719, drive motor; 720, stabilizing disc; 721, rotating frame; 722, curved surface groove; 723, short shaft; 724, toothed ring; 725, locking buckle; 726, torsion spring 1; 727, cutting groove; 728, moving block; 8, adaptive fixing module; 801, placement frame; 802, rectangular opening; 803, connecting rod; 804, hydraulic rod 1; 805, contact block; 806, limiting rod; 807, spring 2; 808, notch; 809, movable block; 810, sliding rod; 811, spring 3; 812, connecting frame; 813, suction cup; 814, suction pump; 815, torsion spring 2; 816, strip plate; 817, narrow groove; 818, long rod screw; 819, nut; 9, linear motor; 10, hydraulic rod 2. Detailed implementation manner

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0026] A positioning welding device for gearbox processing disclosed by the present invention is mainly applied to the scenario where the weld positioning effect of the existing positioning welding device for gearbox processing is poor.

[0027] As Figures 1 to 10 shown, a positioning welding device for gearbox processing includes a tooling table 1 and a cantilever frame 5. The upper side of the tooling table 1 is bolted with the cantilever frame 5. A welding torch 6 is arranged on the cantilever frame 5. An expansion port is opened on the tooling table 1, and an installation box 2 is arranged in the expansion port. A weld positioning module 7 is arranged on the installation box 2. The bottom of the tooling table 1 is bolted with a support frame 3. Four symmetric fixtures 4 are arranged on the weld positioning module 7, and an adaptive fixing module 8 is arranged outside each fixture 4;

[0028] The weld positioning module 7 includes an arc-shaped deflection frame 701 and two symmetrical brackets 711. A lifting plate 712 is slidably connected to each of the brackets 711. A stabilizing plate 720 is provided on one side of the two lifting plates 712 facing each other. All four clamps 4 are located between the two stabilizing plates 720. The arc-shaped deflection frame 701 is bolted to the bottom of the installation box 2. The weld positioning module 7 is used to adjust the height or angle after clamping and fixing the workpiece so that the weld on the workpiece faces the welding torch 6 at the best welding angle, thereby improving the welding effect and efficiency of the welding torch 6;

[0029] The adaptive fixing module 8 includes a plurality of equally spaced contact blocks 805 and two symmetrical suction cups 813. The plurality of contact blocks 805 are all located between the two clamps 4 on the same side. The adaptive fixing module 8 is used to improve the clamping and fixing ability of the weld positioning module 7 for workpieces with different sizes and shapes, so as to improve the stability of the device for clamping workpieces with different sizes and shapes, thereby improving the adaptability of the device.

[0030] Specifically, the two gearbox workpieces to be welded are respectively placed into the device, and the adaptive fixing module 8 on the clamp 4 is used to clamp and fix the workpieces. The weld positioning module 7 is used to adjust the position and posture of the workpieces, so that the workpieces are brought together to form a weld. The linear motor 9, the second hydraulic rod 10 and the welding torch 6 are started, so that the welding torch 6 can weld the gearbox workpieces along the weld; The device can use the weld positioning module 7 to adjust the posture and angle of the workpiece being clamped and fixed, so that the device can effectively position the weld formed after the gearbox workpieces are closed, so that the weld and the welding torch 6 are always at the best welding angle, improving the quality and efficiency of welding.

[0031] Refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7, in a preferred embodiment, two symmetric convex rafters 702 are connected to the outside of the arc-shaped deflection frame 701 by bolts. Round rods are connected to the opposite sides of the two convex rafters 702 by bolts. The outsides of the round rods are rotatably connected to the inner walls of the flared openings through bearings. The inner wall of the arc-shaped deflection frame 701 is connected to a U-shaped frame 707 by bolts. A counterweight 708 is suspended outside the U-shaped frame 707. A reserved groove 703 is provided on one side of the arc-shaped deflection frame 701. A rack 704 is connected to the bottom inner wall of the reserved groove 703 by bolts. A round opening is provided on the support frame 3. A first motor 705 is connected to the round opening by bolts. The output end of the first motor 705 is connected to a gear 706 through a coupling. The gear 706 meshes with the rack 704. A linear motor 9 is connected to the outside of the cantilever frame 5 by bolts. The output end of the linear motor 9 is connected to a second hydraulic rod 10 by bolts. The output end of the second hydraulic rod 10 is connected to a welding torch 6 by bolts; Two symmetric rectangular grooves 709 are provided on the upper side of the installation box 2. The outsides of the two brackets 711 are respectively slidably connected to the inner walls of the two rectangular grooves 709. Through holes are provided on the brackets 711. The same diamond-shaped rod 710 is slidably connected in the two through holes. The two ends of the diamond-shaped rod 710 are respectively connected to the inner walls of the two sides of the installation box 2 by bolts. Two symmetric first springs 716 are wound around the outside of the diamond-shaped rod 710. One end of the first spring 716 is connected to the outside of the same-side bracket 711 by bolts, and the other end is connected to the inner wall of the installation box 2 by bolts. A second motor 713 is connected to the inner wall of the installation box 2 by bolts; The output end of the second motor 713 is connected to a round shaft through a coupling. Two symmetric wire winding rollers 714 are connected to the outside of the round shaft by bolts. Steel wire ropes 715 are wound on the two wire winding rollers 714. The winding directions of the two steel wire ropes 715 are opposite. The ends of the steel wire ropes 715 away from the wire winding rollers 714 are respectively connected to the outside of the same-side bracket 711 by bolts. Motors 717 are connected to the opposite sides of the two brackets 711 by bolts. The output ends of the motors 717 are respectively connected to lead screws 718 through couplings. Convex seats are provided on the outsides of the lead screws 718. The convex seats and the opposite sides of the same-side lifting plates 712 are respectively connected by bolts;Holes are formed in both lifting plates 712. Shaft rods are rotatably connected in the holes through bearings. One side of each shaft rod opposite to the stable disk 720 on the same side is connected by bolts. Driving motors 719 are connected to the outside of the lifting plates 712 by bolts. The output ends of the driving motors 719 are connected to one side of the shaft rods on the same side through couplings. Two symmetrical cutting grooves 727 are formed on one side of the two stable disks 720 opposite to each other. Moving blocks 728 are slidably connected in the cutting grooves 727. One side of each moving block 728 opposite to the fixture 4 on the same side is in contact. Cuts are formed on the inner walls of the cutting grooves 727. Short shafts 723 are slidably connected in the cuts. Rotating frames 721 are rotatably connected to the outside of the shaft rods through bearings. Two curved surface grooves 722 evenly distributed in a circular pattern are formed on each rotating frame 721. The inner walls of the curved surface grooves 722 are slidably connected to the outside of the short shafts 723 on the same side. One side of the two rotating frames 721 opposite to the stable disks 720 on the same side is rotatably connected through bearings. Tooth rings 724 are connected to the outside of the rotating frames 721 by bolts. Locking clasps 725 are clamped to the outside of the tooth rings 724. One side of each locking clasp 725 close to the stable disk 720 is connected by bolts to a thin shaft. A boss is rotatably connected to the outside of the thin shaft through a bearing. The outside of the boss and the outside of the stable disk 720 are connected by bolts. A first torsion spring 726 is connected to the outside of the thin shaft by bolts. One end of the first torsion spring 726 away from the thin shaft is connected to the outside of the boss by bolts.;

[0032] Specifically, place the workpiece to be welded between the fixtures 4. Rotate the rotating frame 721 so that the curved surface groove 722 on the rotating frame 721 pushes the short shaft 723 connected to the moving block 728 to slide on the cutting groove 727 during rotation, so that the fixture 4 gradually approaches the workpiece and finally presses against the outside of the workpiece. After the workpiece is clamped by the fixture 4, under the torque of the first torsion spring 726, the locking clasp 725 is pressed by the torque towards the tooth ring 724, so that the tooth ring 724 is clamped with the locking clasp 725, so that the fixture 4 maintains the clamping state of the workpiece on the stable disk 720. Start the second motor 713. The second motor 713 drives the two winding rollers 714 to rotate, so that the two steel wire ropes 715 pull the brackets 711 on both sides towards the middle, so that the two workpieces are closed to form a weld. When the workpiece has a large size, start the third motor 717. The third motor 717 drives the lead screw 718 to rotate, so that the lifting plate 712 drives the workpiece to rise. When the weld position deviates from the center position or the two workpieces have non-parallel welds, start the first motor 705. The first motor 705 drives the gear 706 meshing with the rack 704 to rotate, so as to adjust the angle of the weld. After the weld facing the welding torch 6 is welded, start the driving motor 719. The driving motor 719 drives the stable disk 720 to rotate, so that the unwelded weld on the workpiece is flipped and faces the welding torch 6, and continue welding.

[0033] In a specific application scenario, the weld positioning module 7 is mainly applicable to the weld positioning link during the weld positioning process. That is, the weld positioning module 7 can adjust the angle of the weld when the device is welding at an off-center position or a non-parallel weld by using the convex rib 702 and the arc-shaped deflection frame 701, so as to ensure that the welding torch 6 can always weld at a better angle, reducing the occurrence of missed welds and wrong welds. By using the drive motor 719 and the stabilizing disk 720, the device can quickly flip the workpiece after welding the upper-side weld, thereby reducing the welding downtime and improving the welding efficiency. By using the locking buckle 725 and the gear ring 724, the device can effectively maintain the clamping force on the workpiece, thus avoiding the workpiece from shifting under force during welding, which may lead to welding failure and rework.

[0034] Refer to Figure 8 、 Figure 9 and Figure 10, in a preferred embodiment, on one side of each of the two jigs 4 located on the same side, a mounting frame 801 is bolted. Three notches 808 with different lengths are formed in the mounting frame 801. Limiting rods 806 are slidably connected to the inner walls of the notches 808. Contact blocks 805 are all located in the mounting frame 801. The outer part of the contact block 805 that is farthest from the moving block 728 among the four contact blocks 805 located in the same mounting frame 801 is bolted to the inner wall of the mounting frame 801. Circular openings are formed in the three contact blocks 805 close to the moving block 728. The inner walls of the circular openings are rotatably connected to the outer parts of the limiting rods 806 on the same side through bearings. Different-length second springs 807 are bolted to the outer parts of the three limiting rods 806 on the same side respectively. The ends of the second springs 807 far from the limiting rods 806 are bolted to the outside of the mounting frame 801 on the same side; on the side of the four moving blocks 728 far from the stabilizing disk 720, connecting rods 803 are bolted. Openings are formed in the jigs 4, and the inner walls of the openings are slidably connected to the outer parts of the connecting rods 803 on the same side. Grooves are formed on the side of the connecting rods 803 far from the stabilizing disk 720, and first hydraulic rods 804 are bolted in the grooves. The output ends of the first hydraulic rods 804 are bolted to the inner walls of the openings on the same side. Symmetric rectangular openings 802 are formed in the two stabilizing disks 720. Movable blocks 809 are slidably connected in the rectangular openings 802. Sliding rods 810 are slidably connected to the movable blocks 809. Third springs 811 are wound around the outer parts of the sliding rods 810. One end of each third spring 811 is bolted to the outside of the corresponding movable block 809, and the other end is bolted to the outer part of the corresponding sliding rod 810 on the same side; at the ends of the sliding rods 810 far from the third springs 811, connecting frames 812 are bolted. The outer parts of suction cups 813 are rotatably connected to the connecting frames 812 on the same side through bearings. Thin rods are bolted to the outer parts of the suction cups 813. Second torsion springs 815 are bolted to the outer parts of the thin rods. The ends of the second torsion springs 815 far from the thin rods are bolted to the outside of the connecting frames 812 on the same side. Suction pumps 814 are arranged on the suction cups 813. The output ends of the suction pumps 814 are connected to the corresponding suction cups 813 through conduits. Two symmetric strip plates 816 are arranged outside the rectangular openings 802. The strip plates 816 are bolted to the side of the stabilizing disk 720 on the same side opposite to them. Narrow slots 817 are formed in the strip plates 816. Two symmetric short plates are bolted to the side of the movable block 809 close to the suction cup 813. Slots are formed in the short plates. Long rod screws 818 are slidably connected in the slots. The outer parts of the long rod screws 818 are slidably connected to the inner walls of the two narrow slots 817 on the same side. Nuts 819 are rotatably connected to the outer parts of the long rod screws 818 through external threads. The opposite sides of the nuts 819 and the outside of the strip plates 816 on the same side are in contact.

[0035] Specifically, before using the fixture 4 to clamp the workpiece, according to the width and surface characteristics of the workpiece, the first hydraulic rod 804 is activated. The output end of the first hydraulic rod 804 extends or contracts, driving the fixture 4 to extend or contract on the connecting rod 803. During the process that the fixture 4 moves towards the workpiece and clamps the workpiece, the contact block 805 gradually approaches the workpiece and finally fits with the workpiece. Under the action of the second spring 807 and the limiting rod 806, the contact block 805 will closely adhere to the workpiece along the outer contour of the workpiece. When the outer surface of the workpiece is relatively complex, the nut 819 is loosened to release the locking of the long rod screw 818 on the movable block 809, so that the movable block 809 can slide on the rectangular opening 802. The suction pump 814 is activated to form a negative pressure inside the suction cup 813, grab the connecting frame 812, move the suction cup 813 to a relatively smooth position on the workpiece, overcome the elastic force of the third spring 811 to pull the sliding rod 810 outwards, so that the suction cup 813 can fit and adsorb on the workpiece, and then the nut 819 is tightened to fix the movable block 809 on the rectangular opening 802.

[0036] In a specific application scenario, the adaptive fixing module 8 is mainly applicable to the adaptive fixing link in the adaptive fixing process, that is, the adaptive fixing module 8 uses the suction cup 813 to provide a certain adsorption force during the process of clamping the workpiece by the fixture 4 on the device to reinforce the clamping and fixing effect, so as to ensure the stability of the workpiece in the direction perpendicular to the clamping direction of the fixture 4 when the device flips the weld of the workpiece, and avoid deflection or skew. The contact block 805 enables the device to wrap and lift along the outer contour of the workpiece when clamping the workpiece, thereby improving the clamping adaptability of the device to workpieces of different sizes and appearances.

[0037] A positioning and welding method for machining a gear box body, using a positioning and welding device for machining a gear box body as described above, includes the following steps:

[0038] Step 1: Place the two gearbox workpieces to be welded into the inverted device respectively, and use the adaptive fixing module 8 on the fixture 4 to clamp and fix the workpieces. (Before using the fixture 4 to clamp the workpieces, according to the width and surface characteristics of the workpieces, start the first hydraulic rod 804. The output end of the first hydraulic rod 804 extends or contracts, driving the fixture 4 to extend or contract on the connecting rod 803. During the process of the fixture 4 moving towards the workpiece and clamping the workpiece, the contact block 805 gradually approaches the workpiece and finally fits with the workpiece. Under the action of the second spring 807 and the limiting rod 806, the contact block 805 will closely adhere to the workpiece along the outer contour of the workpiece. When the surface of the workpiece is relatively complex, loosen the nut 819 to release the locking of the long rod screw 818 on the movable block 809, so that the movable block 809 can slide on the rectangular opening 802. Start the suction pump 814 to form negative pressure inside the suction cup 813, grab the connecting frame 812, move the suction cup 813 to a relatively smooth position on the workpiece, pull the sliding rod 810 outwards against the elastic force of the third spring 811, so that the suction cup 813 can fit and adsorb on the workpiece, and tighten the nut 819 to fix the movable block 809 on the rectangular opening 802);

[0039] Step 2: Use the weld seam positioning module 7 to adjust the position and posture of the workpieces, so that the workpieces are brought together to form a weld seam. Start the linear motor 9, the second hydraulic rod 10 and the welding torch 6, so that the welding torch 6 can weld and process the gearbox workpieces along the weld seam. (Place the workpieces to be welded between the fixtures 4, rotate the rotating frame 721, so that the curved surface groove 722 on the rotating frame 721 pushes the short shaft 723 connected to the moving block 728 to slide on the cutting groove 727 during rotation, so that the fixture 4 gradually approaches the workpiece and finally closely adheres to the outside of the workpiece. After the workpiece is clamped by the fixture 4, under the torsion of the first torsion spring 726, the locking buckle 725 is pressed by the torsion force towards the tooth ring 724, so that the tooth ring 724 is clamped with the locking buckle 725, so that the fixture 4 maintains the clamping state of the workpiece on the stable plate 720. Start the second motor 713, the second motor 713 drives the two wire winding rollers 714 to rotate, so that the two steel wire ropes 715 pull the brackets 711 on both sides towards the middle, so that the two workpieces are closed to form a weld seam. When the workpiece has a large size, start the third motor 717, the third motor 717 drives the lead screw 718 to rotate, so that the lifting plate 712 drives the workpiece to rise. When the weld seam position deviates from the center position or the two workpieces have non-parallel weld seams, start the first motor 705, the first motor 705 drives the gear 706 meshing with the rack 704 to rotate, so as to adjust the angle of the weld seam. After the weld seam facing the welding torch 6 is welded, start the driving motor 719, the driving motor 719 drives the stable plate 720 to rotate, so that the unwelded weld seam on the workpiece is turned over and faces the welding torch 6, and continue welding).

[0040] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A positioning welding device for gear box processing, comprising a tooling table (1) and a cantilever frame (5), characterized in that: The upper side of the tooling platform (1) is fixedly connected to a cantilever frame (5), a welding gun (6) is arranged on the cantilever frame (5), and a flared opening is opened on the tooling platform (1), a mounting box (2) is arranged in the flared opening, a weld positioning module (7) is arranged on the mounting box (2), the bottom of the tooling platform (1) is fixedly connected to a support frame (3), and four symmetrical clamps (4) are arranged on the weld positioning module (7), and the outside of each clamp (4) is provided with an adaptive fixing module (8); The weld positioning module (7) comprises an arc-shaped deflection frame (701) and two symmetrical brackets (711), each bracket (711) is slidably connected to a lifting plate (712), a stabilizing plate (720) is provided on opposite sides of the two lifting plates (712), the four clamps (4) are located between the two stabilizing plates (720), and the arc-shaped deflection frame (701) is fixedly connected to the bottom of the installation box (2), and the weld positioning module (7) is used to adjust the height or angle after clamping and fixing the workpiece so that the weld on the workpiece faces the welding gun (6) at an optimal welding angle, thereby improving the welding effect and welding efficiency of the welding gun (6); The adaptive fixing module (8) comprises a plurality of equidistantly distributed contact blocks (805) and two symmetrical suction cups (813), and the plurality of contact blocks (805) are all located between two clamps (4) on the same side. The adaptive fixing module (8) is used to improve the clamping and fixing capability of the weld positioning module (7) for workpieces with different sizes and shapes, so as to improve the stability of the device in clamping workpieces with different sizes and shapes, thereby improving the adaptability of the device.

2. A positioning welding equipment for gear box processing according to claim 1, characterized in that: The arc-shaped deflection frame (701) is fixedly connected to the outside with two symmetrical convex rafters (702), and the two convex rafters (702) are fixedly connected to round rods on opposite sides, and the outside of the round rods are movably connected to the expanded inner wall, and the inner wall of the arc-shaped deflection frame (701) is fixedly connected to a U-shaped frame (707), and a counterweight (708) is suspended on the outside of the U-shaped frame (707), and a reserved groove (703) is opened on one side of the arc-shaped deflection frame (701), and the bottom of the reserved groove (703) is The inner wall is fixedly connected with a rack (704), a circular opening is opened on the support frame (3), a motor 1 (705) is fixedly connected inside the circular opening, the output end of the motor 1 (705) is connected with a gear (706) through a coupling, the gear (706) is meshed with the rack (704), the outside of the cantilever frame (5) is fixedly connected with a linear motor (9), the output end of the linear motor (9) is fixedly connected with a hydraulic rod 2 (10), and the output end of the hydraulic rod 2 (10) is fixedly connected with a welding gun (6).

3. A positioning welding device for gear box processing according to claim 2, characterized in that: The upper side of the installation box (2) is provided with two symmetrical rectangular grooves (709), the outsides of the two brackets (711) are respectively slidably connected to the inner walls of the two rectangular grooves (709), the brackets (711) are each provided with a hole groove, the two hole grooves are slidably connected with the same diamond rod (710), the two ends of the diamond rod (710) are respectively fixedly connected to the inner walls of the two sides of the installation box (2), the outside of the diamond rod (710) is surrounded by two symmetrical springs (716), one end of the spring (716) is fixedly connected to the outside of the bracket (711) on the same side, and the other end is fixedly connected to the inner wall of the installation box (2), and the inner wall of the installation box (2) is fixedly connected with a motor (713).

4. The positioning welding equipment for gear box processing according to claim 3 is characterized in that: The output end of the second motor (713) is connected to a circular shaft via a coupling, and two symmetrical winding rollers (714) are fixedly connected to the outside of the circular shaft, and the two winding rollers (714) are both wound with steel wire ropes (715). The winding directions of the two steel wire ropes (715) are opposite, and the ends of the steel wire ropes (715) away from the winding rollers (714) are both fixedly connected to the outside of the bracket (711) on the same side, and the two brackets (711) are both fixedly connected to the opposite sides of the motor three (717), and the output end of the motor three (717) is connected to a screw rod (718) via a coupling, and the outside of the screw rod (718) is provided with a convex seat, and the convex seat is fixedly connected to the side opposite to the lifting plate (712) on the same side.

5. The positioning welding equipment for gear box processing according to claim 4 is characterized in that: The two lifting plates (712) are each provided with an opening, and a shaft is movably connected in the opening, and the shaft is fixedly connected to the side opposite to the stabilizing plate (720) on the same side, and the outside of the lifting plates (712) is fixedly connected to a driving motor (719), and the output end of the driving motor (719) is connected to one side of the shaft on the same side through a coupling, and two symmetrical grooves (727) are provided on the opposite side of the two stabilizing plates (720), and the grooves (727) are provided with a plurality of symmetrical grooves (727). A moving block (728) is slidably connected to each other, and the moving block (728) is fitted with a side opposite to the clamp (4) on the same side. The inner wall of the groove (727) is provided with a notch, and a short shaft (723) is slidably connected in the notch. The outside of the shaft is movably connected to a rotating frame (721), and the rotating frame (721) is provided with two curved grooves (722) equidistantly distributed around the circumference, and the inner wall of the curved groove (722) is slidably connected to the outside of the short shaft (723) on the same side.

6. The positioning welding equipment for gear box processing according to claim 5, characterized in that: The two rotating frames (721) are movably connected to the side opposite to the stabilizing disk (720) on the same side, the outside of the rotating frames (721) are fixedly connected to a toothed ring (724), the outside of the toothed ring (724) is clamped with a locking buckle (725), the side of the locking buckle (725) close to the stabilizing disk (720) is fixedly connected to a thin shaft, the outside of the thin shaft is movably connected to a boss, the outside of the boss is fixedly connected to the outside of the stabilizing disk (720), the outside of the thin shaft is fixedly connected to a torsion spring 1 (726), and the end of the torsion spring 1 (726) away from the thin shaft is fixedly connected to the outside of the boss.

7. The positioning welding equipment for gear box processing according to claim 6 is characterized in that: The two clamps (4) located on the same side are fixedly connected to a placement frame (801) on opposite sides. The placement frame (801) is provided with three slots (808) of different lengths. The inner walls of the slots (808) are slidably connected to limit rods (806). The contact blocks (805) are all located in the placement frame (801). Among the four contact blocks (805) located in the same placement frame (801), the contact block (805) farthest from the moving block (728) is The outside is fixedly connected to the inner wall of the placement frame (801), and circular openings are provided on the three contact blocks (805) close to the moving block (728). The inner walls of the circular openings are movably connected to the outside of the limiting rod (806) on the same side, and the outsides of the three limiting rods (806) on the same side are respectively fixedly connected to springs (807) of different lengths, and the ends of the springs (807) away from the limiting rod (806) are fixedly connected to the outside of the placement frame (801) on the same side.

8. The positioning welding equipment for gear box processing according to claim 7 is characterized in that: The four movable blocks (728) are fixedly connected to a connecting rod (803) on one side away from the stabilizing disk (720); an opening is provided on the clamp (4); the inner wall of the opening is slidably connected to the outside of the connecting rod (803) on the same side; a groove is provided on the side of the connecting rod (803) away from the stabilizing disk (720); a hydraulic rod 1 (804) is fixedly connected in the groove; the output end of the hydraulic rod 1 (804) is fixedly connected to the inner wall of the opening on the same side; and symmetrical rectangular openings (802) are provided on the two stabilizing disks (720); movable blocks (809) are slidably connected in the rectangular openings (802); the movable blocks (809) are slidably connected to the sliding rod (810); the outside of the sliding rod (810) is surrounded by a spring 3 (811); one end of the spring 3 (811) is fixedly connected to the outside of the movable block (809); and the other end is fixedly connected to the outside of the sliding rod (810) on the same side.

9. The positioning welding equipment for gear box processing according to claim 8, characterized in that: The end of the sliding rod (810) away from the spring three (811) is fixedly connected to a connection frame (812), and the connection frame (812) is movably connected to the outside of the suction cup (813) on the same side. The outside of the suction cup (813) is fixedly connected to a thin rod, and the outside of the thin rod is fixedly connected to a torsion spring two (815), and the end of the torsion spring two (815) away from the thin rod is fixedly connected to the outside of the connection frame (812) on the same side. The suction cup (813) is provided with a suction pump (814), and the output end of the suction pump (814) is connected to the suction cup (813) on the same side through a conduit, and two symmetrical strip plates are provided on the outside of the rectangular opening (802). (816), the strip plate (816) is fixedly connected to the side opposite to the stabilizing plate (720) on the same side, and a narrow groove (817) is provided on the strip plate (816). The movable block (809) is fixedly connected to two symmetrical short plates on the side close to the suction cup (813), and a slot hole is provided on the short plate, and a long rod screw (818) is slidably connected in the slot hole. The outside of the long rod screw (818) is slidably connected to the inner wall of the two narrow grooves (817) on the same side, and the outside of the long rod screw (818) is rotatably connected to a nut (819) through an external thread, and the nut (819) is fitted with the side opposite to the outside of the strip plate (816) on the same side.

10. A positioning welding method for gear box processing, using the positioning welding device for gear box processing as claimed in claim 9, characterized in that: The steps include: Step 1: Place two gearbox workpieces to be welded into the welding device respectively, and use the adaptive fixing module (8) on the clamp (4) to clamp and fix the workpieces; Step 2: Use the weld positioning module (7) to adjust the position and posture of the workpieces so that the workpieces are brought close together to form a weld, and start the linear motor (9), the second hydraulic rod (10) and the welding gun (6) so that the welding gun (6) can perform welding processing on the gearbox workpiece along the weld.

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