Friction stir welding tool for longitudinal seam of 4200-grade box bottom

Abstract

The invention relates to the technical field of welding tools, and discloses a 4200-level box bottom longitudinal seam friction stir welding tool which comprises a tool base, a rotary table base is arranged at the top of the tool base, a rotating mechanism is arranged at the lower end of the rotary table base, and a rotary table upper pedestal is rotationally connected to the top of the rotary table base; the top of the rotary table base is fixedly connected with a circular ring mold, the surface of the circular ring mold is fixedly connected with a fixing block, and an elastic steel belt is arranged on the surface of the circular ring mold. According to the friction welding device, the output end of the air cylinder pushes the swing rod to move downwards, so that the pressing block fixes a scalloped segment workpiece to the surface of the circular ring mold, the scalloped segment workpiece is prevented from moving in the friction welding process, and the welding effect and quality are guaranteed; and the longitudinal seam pressing arm rotates around the hinge point of the pressing arm seat, so that the welded scalloped segment workpiece can be conveniently taken down subsequently.

Description

Technical Field

[0001] The invention relates to the technical field of welding tooling, in particular to a 4200-grade box bottom longitudinal seam friction stir welding tooling. Background Art

[0002] The 4200-grade box bottom longitudinal seam stir friction welding tool is used for in-situ milling and stir friction welding of 4200-grade circular melon slice longitudinal seam before welding. The melon slice workpiece is in the shape of a partial ellipsoid shell, and the 4200-grade circular ring workpiece is an eight-petal melon slice combined welded part.

[0003] When welding melon slices, they need to be fixed first. Traditional fixing methods are difficult to ensure uniform fixation of the melon slices, which can easily lead to uneven local force and affect the welding quality. Therefore, we propose a 4200-grade box bottom longitudinal seam stir friction welding tooling. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a 4200-level box bottom longitudinal seam stir friction welding tool.

[0005] The present invention is implemented by the following technical scheme: a 4200-level box bottom longitudinal seam stir friction welding tool, comprising a tool base, a turntable base is arranged on the top of the tool base, a rotating mechanism is arranged on the lower end of the turntable base, the top of the turntable base is rotatably connected with a turntable pedestal, a circular ring mold is fixedly connected to the top of the turntable base, a fixed block is fixedly connected to the surface of the circular ring mold, an elastic steel belt is arranged on the surface of the circular ring mold, a fixed seat is fixedly connected to the top of the turntable pedestal, a longitudinal seam pressing mechanism is arranged on the surface of the circular ring mold, a plug rod is fixedly connected to the top of the fixed seat, a threaded rod is fixedly connected to the bottom of the elastic steel belt, and a nut is threadedly connected to the surface of the threaded rod; The rotating mechanism comprises a motor, an output end of the motor is fixedly connected to a reducer, and one end of the reducer is transmission-connected to a slewing support gear set.

[0006] Through the above technical scheme, the melon slice workpiece is placed on the surface of the circular ring mold, one end of the elastic steel belt is sleeved on the surface of the insertion rod, and then the threaded rod at the other end of the elastic steel belt is inserted into the interior of the fixed block, and then the nut is rotated to fix the elastic steel belt through the nut, and the motor is started. The motor drives the gear inside the reducer to rotate, drives the slewing support gear group to rotate, makes the turntable base rotate, and drives the circular ring mold to rotate, so as to facilitate the adjustment of the position of the melon slice workpiece and facilitate subsequent welding.

[0007] As a further improvement of the above solution, one end of the motor is fixedly connected to the surface of the tooling base, the bottom of the slewing support gear group is rotatably connected to the top of the tooling base, and the top of the slewing support gear group is fixedly connected to the bottom of the turntable base.

[0008] As a further improvement of the above solution, the longitudinal seam pressing mechanism includes a longitudinal seam pressing arm. One end of the longitudinal seam pressing arm is fixedly connected with an extension plate. One end of the longitudinal seam pressing arm away from the extension plate is hinged to a pressing arm seat. One end of the inner wall of the extension plate is hinged to a hinge seat. One end of the hinge seat is fixedly connected with a hydraulic rod. One end of the inner wall of the longitudinal seam pressing arm is hinged to a cylinder. The output end of the cylinder is hinged to a swing rod. One end of the surface of the swing rod is hinged to a swing rod seat. One end of the swing rod away from the cylinder is fixedly connected with a pressing block.

[0009] Through the above technical solution, the output end of the cylinder pushes the swing rod to move downward, so that the pressing block fixes the segment workpiece on the surface of the circular ring die blank, avoiding the movement of the segment workpiece during the friction welding process, ensuring the welding effect and quality. After the welding is completed, the hydraulic rod is started, and the output end of the hydraulic rod pushes the hinge seat to move, so that the longitudinal seam pressing arm rotates around the hinge point of the pressing arm seat, facilitating the subsequent removal of the welded segment workpiece.

[0010] As a further improvement of the above solution, one end of the longitudinal seam pressing arm is fixedly connected with a handrail ladder. The number of the longitudinal seam pressing arms is set to four. One end of the pressing arm seat is fixedly connected with the surface of the upper table of the turntable.

[0011] Through the above technical solution, it is convenient for subsequent maintenance through the handrail ladder. Four sets of longitudinal seam pressing mechanisms are provided, and two sets are used as a group to fix two segment workpieces.

[0012] As a further improvement of the above solution, the bottom of the hydraulic rod is fixedly connected with the inner wall of the fixed seat. One end of the swing rod seat is fixedly connected with the inner wall of the longitudinal seam pressing arm.

[0013] Through the above technical solution, the position of the swing rod is limited by the swing rod seat, making the swing rod more stable when rotating.

[0014] As a further improvement of the above solution, the number of the cylinders, swing rods, swing rod seats and pressing blocks are all set to several.

[0015] Through the above technical solution, the pressing block adopts a piano key type pressing block to realize continuous pressing of the workpiece. The aluminum alloy piano key is equipped with stainless steel fingertips that can be used on both sides to ensure the best weld cooling performance. The gap between each pressing block is not greater than 5 mm, the pressing pressure can be adjusted, and in combination with the working area of the pressing block, the pressing fingers cannot damage the surface of the workpiece in the pressing state.

[0016] As a further improvement of the above solution, one end of the elastic steel belt is sleeved on the surface of the insertion rod. One end of the threaded rod penetrates through the fixed block, and the nut is located at the lower end of the fixed block.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing a longitudinal seam pressing mechanism, specifically, the output end of the air cylinder is used to push the swing rod downward, so that the pressing block fixes the segment workpiece on the surface of the circular ring die blank, avoiding the movement of the segment workpiece during the friction welding process, ensuring the welding effect and quality. After welding is completed, the hydraulic rod is started, and the output end of the hydraulic rod pushes the hinge seat to move, causing the longitudinal seam pressing arm to rotate around the hinge point of the pressing arm seat, facilitating the subsequent removal of the welded segment workpiece.

[0018] By providing a fixing block, an elastic steel belt, a plug rod, a threaded rod and a nut, specifically, one end of the elastic steel belt is sleeved on the surface of the plug rod, then the threaded rod at the other end of the elastic steel belt is inserted into the interior of the fixing block, and then the nut is rotated to fix the elastic steel belt by the nut. One segment workpiece is fixed by two elastic steel belts, avoiding the movement of the segment workpiece, with simple and fast operation and convenient subsequent disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic side view structure diagram of the present invention; Figure 3 is the present invention Figure 1 enlarged schematic diagram of part A; Figure 4 is a schematic sectional structure diagram of the present invention; Figure 5 is a schematic front view structure diagram of the present invention; Figure 6 is a schematic top view structure diagram of the present invention.

[0020] MAIN SYMBOL DESCRIPTION: 1, tooling base; 2, turntable base; 3, rotating mechanism; 301, motor; 302, reducer; 303, slewing support gear set; 4, circular ring die blank; 5, fixing block; 6, elastic steel belt; 7, fixing seat; 8, longitudinal seam pressing mechanism; 801, longitudinal seam pressing arm; 802, extension plate; 803, pressing arm seat; 804, hinge seat; 805, hydraulic rod; 806, air cylinder; 807, swing rod; 808, swing rod seat; 809, pressing block; 9, plug rod; 10, escalator; 11, threaded rod; 12, nut; 13, turntable upper base. SPECIFIC EMBODIMENTS

[0021] Next, in combination with the drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination can be formed among the following-described embodiments or technical features to form a new embodiment. Embodiment

[0022] Please combine with Figures 1-6 , the friction stir welding tooling for the longitudinal seam at the bottom of the 4200-level box in this embodiment includes a tooling base 1. A turntable base 2 is arranged at the top of the tooling base 1. A rotating mechanism 3 is arranged at the lower end of the turntable base 2. A turntable upper base 13 is rotatably connected to the top of the turntable base 2. A circular ring die 4 is fixedly connected to the top of the turntable base 2. Fixed blocks 5 are fixedly connected to the surface of the circular ring die 4. An elastic steel belt 6 is arranged on the surface of the circular ring die 4. A fixed seat 7 is fixedly connected to the top of the turntable upper base 13. A longitudinal seam pressing mechanism 8 is arranged on the surface of the circular ring die 4. A plug rod 9 is fixedly connected to the top of the fixed seat 7. A threaded rod 11 is fixedly connected to the bottom of the elastic steel belt 6. A nut 12 is threadedly connected to the surface of the threaded rod 11; The rotating mechanism 3 includes a motor 301. The output end of the motor 301 is fixedly connected with a speed reducer 302. One end of the speed reducer 302 is drivingly connected with a slewing support gear set 303.

[0023] One end of the motor 301 is fixedly connected to the surface of the tooling base 1. The bottom of the slewing support gear set 303 is rotatably connected to the top of the tooling base 1. The top of the slewing support gear set 303 is fixedly connected to the bottom of the turntable base 2. Place the segment workpiece on the surface of the circular ring die 4. Then, sleeved one end of the elastic steel belt 6 on the surface of the plug rod 9. Then, insert the threaded rod 11 at the other end of the elastic steel belt 6 into the inside of the fixed block 5. Then, rotate the nut 12 to fix the elastic steel belt 6 by the nut 12. Fix one segment workpiece by two elastic steel belts 6 to prevent the segment workpiece from moving. The operation is simple and fast, and it is also convenient for subsequent disassembly. After fixing the two segment workpieces by repeating the above steps, start the motor 301. The motor 301 drives the gears inside the speed reducer 302 to rotate, drives the slewing support gear set 303 to rotate, makes the turntable base 2 rotate, drives the circular ring die 4 to rotate, and rotates the two fixed segment workpieces to the position of the longitudinal seam pressing arm 801.

[0024] The longitudinal seam pressing mechanism 8 includes a longitudinal seam pressing arm 801. One end of the longitudinal seam pressing arm 801 is fixedly connected with an extension plate 802. One end of the longitudinal seam pressing arm 801 away from the extension plate 802 is hinged with a pressing arm seat 803. The inner wall of the extension plate 802 is hinged with a hinge seat 804. One end of the hinge seat 804 is fixedly connected with a hydraulic rod 805. The inner wall of the longitudinal seam pressing arm 801 is hinged with a cylinder 806. The output end of the cylinder 806 is hinged with a swing rod 807. The surface of the swing rod 807 is hinged with a swing rod seat 808. One end of the swing rod 807 away from the cylinder 806 is fixedly connected with a pressing block 809. When the cylinder 806 is started, the output end of the cylinder 806 pushes the swing rod 807 to move downward, so that the pressing block 809 fixes the segment workpiece on the surface of the ring die 4, avoiding the movement of the segment workpiece during the friction welding process, ensuring the welding effect and quality. After the welding is completed, the hydraulic rod 805 is started, and the output end of the hydraulic rod 805 pushes the hinge seat 804 to move, so that the longitudinal seam pressing arm 801 rotates around the hinge point of the pressing arm seat 803, facilitating the subsequent removal of the welded segment workpiece.

[0025] One end of the longitudinal seam pressing arm 801 is fixedly connected with a handrail escalator 10. The number of the longitudinal seam pressing arms 801 is set to four. One end of the pressing arm seat 803 is fixedly connected with the surface of the upper platen 13 of the turntable.

[0026] The bottom of the hydraulic rod 805 is fixedly connected with the inner wall of the fixed seat 7. One end of the swing rod seat 808 is fixedly connected with the inner wall of the longitudinal seam pressing arm 801.

[0027] The numbers of the cylinder 806, the swing rod 807, the swing rod seat 808 and the pressing block 809 are all set to several.

[0028] One end of the elastic steel strip 6 is sleeved on the surface of the insertion rod 9. One end of the threaded rod 11 penetrates through the fixed block 5, and the nut 12 is located at the lower end of the fixed block 5.

[0029] In the embodiment of the present application, the implementation principle of the friction stir welding tooling for the longitudinal seam at the bottom of the 4200-level box is as follows: During use, place the segment workpiece on the surface of the circular ring die 4, then sleeved one end of the elastic steel belt 6 on the surface of the insertion rod 9, then insert the threaded rod 11 at the other end of the elastic steel belt 6 into the inside of the fixed block 5, and then rotate the nut 12 to fix the elastic steel belt 6 through the nut 12. Fix one segment workpiece through two elastic steel belts 6 to prevent the segment workpiece from moving. The operation is simple and fast, and it is also convenient for subsequent disassembly. After fixing the two segment workpieces by repeating the above steps, start the motor 301. The motor 301 drives the gears inside the speed reducer 302 to rotate, driving the slewing bearing gear set 303 to rotate, so that the turntable base 2 rotates, driving the circular ring die 4 to rotate, and rotating the two fixed segment workpieces to the position of the longitudinal seam pressing arm 801. Start the cylinder 806, and the output end of the cylinder 806 pushes the swing rod 807 to move downward, so that the pressing block 809 fixes the segment workpiece on the surface of the circular ring die 4, preventing the segment workpiece from moving during the friction welding process, ensuring the welding effect and quality. After welding is completed, start the hydraulic rod 805, and the output end of the hydraulic rod 805 pushes the hinge seat 804 to move, causing the longitudinal seam pressing arm 801 to rotate around the hinge point of the pressing arm seat 803, facilitating the subsequent removal of the welded segment workpiece.

[0030] The above-mentioned implementation manner is only the preferred implementation manner of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. 4200 grade box bottom longitudinal seam stir friction welding tooling, characterized by: The tooling base (1) comprises a tooling base (1), a turntable base (2) is arranged on the top of the tooling base (1), a rotating mechanism (3) is arranged on the lower end of the turntable base (2), the top of the turntable base (2) is rotatably connected to a turntable upper seat (13), the top of the turntable base (2) is fixedly connected to a circular mold (4), the surface of the circular mold (4) is fixedly connected to a fixing block (5), the surface of the circular mold (4) is provided with an elastic steel belt (6), the top of the turntable upper seat (13) is fixedly connected to a fixing seat (7), the surface of the circular mold (4) is provided with a longitudinal seam pressing mechanism (8), the top of the fixing seat (7) is fixedly connected to an insertion rod (9), the bottom of the elastic steel belt (6) is fixedly connected to a threaded rod (11), and the surface of the threaded rod (11) is threadedly connected to a nut (12); The rotating mechanism (3) comprises a motor (301), the output end of the motor (301) is fixedly connected to a reducer (302), and one end of the reducer (302) is drivingly connected to a slewing support gear set (303).

2. The 4200-level box bottom longitudinal seam stir friction welding tool as claimed in claim 1, characterized in that: One end of the motor (301) is fixedly connected to the surface of the tooling base (1), the bottom of the slewing support gear set (303) is rotatably connected to the top of the tooling base (1), and the top of the slewing support gear set (303) is fixedly connected to the bottom of the turntable base (2).

3. The 4200-grade box bottom longitudinal seam stir friction welding tool as claimed in claim 1, characterized in that: The longitudinal seam pressing mechanism (8) comprises a longitudinal seam pressing arm (801), one end of the longitudinal seam pressing arm (801) is fixedly connected to an extension plate (802), one end of the longitudinal seam pressing arm (801) away from the extension plate (802) is hingedly connected to a pressing arm seat (803), the inner wall of the extension plate (802) is hingedly connected to a hinge seat (804), one end of the hinge seat (804) is fixedly connected to a hydraulic rod (805), the inner wall of the longitudinal seam pressing arm (801) is hingedly connected to a cylinder (806), the output end of the cylinder (806) is hingedly connected to a swing rod (807), the surface of the swing rod (807) is hingedly connected to a swing rod seat (808), and one end of the swing rod (807) away from the cylinder (806) is fixedly connected to a pressing block (809).

4. The 4200-level box bottom longitudinal seam stir welding tool as claimed in claim 3, characterized in that: One end of the longitudinal seam pressing arm (801) is fixedly connected to the escalator (10), the number of the longitudinal seam pressing arms (801) is four, and one end of the pressing arm seat (803) is fixedly connected to the surface of the pedestal (13) on the turntable.

5. The 4200-level box bottom longitudinal seam stir welding tool as claimed in claim 3, characterized in that: The bottom of the hydraulic rod (805) is fixedly connected to the inner wall of the fixing seat (7), and one end of the swing rod seat (808) is fixedly connected to the inner wall of the longitudinal seam pressing arm (801).

6. The 4200-level box bottom longitudinal seam stir welding tool as claimed in claim 3, characterized in that: The cylinder (806), the swing rod (807), the swing rod seat (808) and the pressing block (809) are all provided in a plurality.

7. The 4200-level box bottom longitudinal seam stir welding tool as claimed in claim 1, characterized in that: One end of the elastic steel belt (6) is sleeved on the surface of the insertion rod (9), one end of the threaded rod (11) passes through the fixing block (5), and the nut (12) is located at the lower end of the fixing block (5).

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