Turnover rotary table device for vacuum electron beam welding

Abstract

The utility model discloses a turnover rotary table device for vacuum electron beam welding, belongs to the technical field of electron beam welding, and aims to solve the problems that a welding rotary table cannot turn over by an angle to cause welding dead angles and a workpiece is easy to slide to cause welding deviation, the turnover rotary table device comprises a bottom groove, and the bottom of the bottom groove is fixedly connected with a plurality of supporting legs. A bottom groove is formed in the upper portion of the base, a first rotating shaft is rotationally connected to the inner wall of each of the two sides of the bottom groove, a mounting frame is fixedly connected between the two first rotating shafts, and a servo motor is mounted on the lower surface of the top of the mounting frame. The worm gear drives the first rotating shaft to rotate, so that the mounting frame rotates to drive the welding rotary table to turn over to change the angle, welding dead angles of workpieces are avoided, the welding effect is improved, meanwhile, worm gear and worm transmission has the self-locking characteristic, reverse rotation can be effectively prevented, and the safety of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electron beam welding, and in particular relates to a reversible turntable device for vacuum electron beam welding. Background Art

[0002] Electron beam welding is widely used in many industries such as aerospace, atomic energy, national defense and military industry, automobile and electrical instrumentation because of its advantages of no need for welding rods, not easy to oxidize, good process repeatability and small thermal deformation. The basic principle of electron beam welding is that the cathode in the electron gun emits electrons due to direct or indirect heating. The electrons are accelerated by the high-voltage electrostatic field and then focused by the electromagnetic field to form an electron beam with extremely high energy density. This electron beam is used to bombard the workpiece, and the huge kinetic energy is converted into heat energy, which melts the workpiece at the welding point to form a molten pool, thereby realizing the welding of the workpiece.

[0003] During electron beam welding, a welding turntable is needed to place the workpiece to assist the electron beam welding of the workpiece. However, the existing welding turntable can only rotate in the horizontal direction and cannot flip the workpiece at an angle, which leads to dead angles during welding and affects the welding effect. At the same time, the existing welding turntable has a poor fixing effect on the workpiece and is prone to sliding during the welding process, resulting in welding deviations.

[0004] Therefore, a reversible turntable device for vacuum electron beam welding is needed to solve the problems in the prior art that the welding turntable cannot be reversed to a certain angle, resulting in a welding dead angle, and the workpiece is prone to slipping, resulting in welding deviation. Utility Model Content

[0005] The utility model aims to provide a reversible turntable device for vacuum electron beam welding to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flippable turntable device for vacuum electron beam welding, comprising a bottom groove, a plurality of supporting feet fixedly connected to the bottom of the bottom groove, the inner walls on both sides of the bottom groove are rotatably connected to a first rotating shaft, a mounting frame is fixedly connected between the two first rotating shafts, a servo motor is installed on the top lower surface of the mounting frame, a second rotating shaft corresponding to the servo motor is rotatably connected to the top of the mounting frame, a welding turntable is fixedly connected to the top of the second rotating shaft, a fixing mechanism is arranged on the top of the welding turntable, one of the first rotating shafts is fixedly connected to a worm gear through the bottom groove on the outer side, a convex frame is fixedly connected to one side of the bottom groove, a third rotating shaft is rotatably connected between the top lower surface of the convex frame and the bottom upper surface, a worm is fixedly connected to the outer wall of the third rotating shaft, and a rocker is installed on the top of the convex frame.

[0007] It should be noted in the solution that the bottoms of the multiple support legs are fixedly connected with anti-slip pads.

[0008] It is further worth noting that the output end of the servo motor passes through the top of the installation frame and is fixedly connected to the second rotating shaft.

[0009] It should be further explained that the fixing mechanism includes a plurality of through grooves opened inside the welding turntable, the inner walls of the plurality of through grooves are slidably connected with sliders, the tops of the plurality of sliders are fixedly connected with clamps, the outer ends of the plurality of sliders are fixedly connected with rotating seats, the outer ends of the plurality of rotating seats are installed with threaded rods, and the outer ends of the plurality of threaded rods are fixedly connected with rotating plates.

[0010] As a preferred embodiment, the plurality of through grooves are symmetrically arranged inside the welding turntable, and the inner walls of the plurality of through grooves are provided with limiting sliding grooves corresponding to the sliding blocks.

[0011] As a preferred implementation, a thread groove corresponding to the threaded rod is provided between the welding turntable and the through groove.

[0012] As a preferred embodiment, the top of the third rotating shaft passes through the top of the convex frame and is fixedly connected to the rocker, and the worm is meshed with the worm wheel.

[0013] Compared with the prior art, the utility model provides a reversible turntable device for vacuum electron beam welding, which has at least the following beneficial effects:

[0014] (1) By arranging the worm wheel and the worm gear to cooperate with each other, when the welding angle of the workpiece needs to be changed, the rocker is rotated to drive the worm gear to rotate, so that the worm wheel drives the first rotating shaft to rotate, thereby the installation frame rotates to drive the welding turntable to flip and change the angle, thereby avoiding welding dead angles of the workpiece and improving the welding effect. At the same time, the worm wheel transmission has a self-locking feature, which can effectively prevent reversal and increase the safety of the device.

[0015] (2) By setting up a fixing mechanism, the workpiece to be welded is placed on the top of the welding turntable. The rotating plate drives the threaded rod to rotate, so that the slider moves inward, driving multiple clamps to clamp the workpiece from multiple directions, so that the workpiece is stably installed on the top of the welding turntable, avoiding sliding during welding and improving welding stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0018] Figure 3This is a schematic diagram of the structure of the utility model from a third viewing angle;

[0019] Figure 4 It is a structural schematic diagram of the fixing mechanism of the utility model.

[0020] In the figure: 1. bottom groove; 2. supporting foot; 3. first rotating shaft; 4. mounting frame; 5. servo motor; 6. second rotating shaft; 7. welding turntable; 8. fixing mechanism; 801. through groove; 802. slider; 803. clamping plate; 804. rotating seat; 805. threaded rod; 806. rotating plate; 9. worm gear; 10. convex frame; 11. third rotating shaft; 12. worm; 13. rocker. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] See also Figure 1-4 The utility model provides a reversible turntable device for vacuum electron beam welding, comprising a bottom groove 1, a plurality of supporting legs 2 are fixedly connected to the bottom of the bottom groove 1, first rotating shafts 3 are rotatably connected to the inner walls on both sides of the bottom groove 1, a mounting frame 4 is fixedly connected between the two first rotating shafts 3, a servo motor 5 is installed on the top lower surface of the mounting frame 4, a second rotating shaft 6 corresponding to the servo motor 5 is rotatably connected to the top of the mounting frame 4, a welding turntable 7 is fixedly connected to the top of the second rotating shaft 6, a fixing mechanism 8 is arranged on the top of the welding turntable 7, one of the first rotating shafts 3 passes through the bottom groove 1 on its outer side and is fixedly connected to a worm gear 9, a convex frame 10 is fixedly connected to one side of the bottom groove 1, a third rotating shaft 11 is rotatably connected between the top lower surface of the convex frame 10 and the bottom upper surface, a worm 12 is fixedly connected to the outer wall of the third rotating shaft 11, and a rocker 13 is installed on the top of the convex frame 10.

[0023] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the bottoms of the multiple support legs 2 are fixedly connected with anti-skid pads, which have the effect of anti-skid and shock absorption, so that the bottom trough 1 always remains stable during the entire welding process, thereby improving the stability of the welding work.

[0024] Further as Figure 1 and Figure 3 As shown, it is worth explaining in detail that the output end of the servo motor 5 passes through the top of the mounting frame 4 and is fixedly connected to the second rotating shaft 6, ensuring that the servo motor 5 can drive the second rotating shaft 6 to rotate stably, so that the welding turntable 7 drives the workpiece to rotate and cooperate with the electron beam to perform welding.

[0025] Further as Figure 1 and Figure 3As shown, it is worth explaining in detail that the top of the third rotating shaft 11 passes through the top of the convex frame 10 and is fixedly connected to the rocker 13, and the worm 12 is meshed with the worm wheel 9, ensuring that rotating the rocker 13 can drive the worm 12 to rotate, so that the worm wheel 9 drives the first rotating shaft 3 to rotate, thereby rotating the mounting frame 4 and driving the welding turntable 7 to flip and change the angle.

[0026] According to the above working process, it can be known that: by setting the worm wheel 9 and the worm 12 to cooperate with each other, when the welding angle of the workpiece needs to be changed, rotating the rocker 13 can drive the worm 12 to rotate, so that the worm wheel 9 drives the first rotating shaft 3 to rotate, thereby causing the mounting frame 4 to rotate and drive the welding turntable 7 to flip and change the angle, thereby avoiding welding dead corners in the workpiece and improving the welding effect. At the same time, the transmission of the worm wheel 9 and the worm 12 has a self-locking feature, which can effectively prevent reversal and increase the safety of the device.

[0027] Further as Figure 4 As shown, it is worth explaining in detail that the fixing mechanism 8 includes a plurality of through grooves 801 opened inside the welding turntable 7, the inner walls of the plurality of through grooves 801 are slidably connected with sliders 802, the tops of the plurality of sliders 802 are fixedly connected with clamps 803, the outer ends of the plurality of sliders 802 are fixedly connected with rotating seats 804, the outer ends of the plurality of rotating seats 804 are installed with threaded rods 805, the outer ends of the plurality of threaded rods 805 are fixedly connected with rotating plates 806, by setting the fixing mechanism 8, the plurality of clamps 803 clamp the workpiece from multiple directions, so that the workpiece is stably installed on the top of the welding turntable 7, avoiding sliding during welding and improving welding stability.

[0028] Further as Figure 4 As shown, it is worth explaining in detail that a plurality of through grooves 801 are symmetrically arranged inside the welding turntable 7, and the inner walls of the plurality of through grooves 801 are provided with limiting slide grooves corresponding to the slider 802, and the limiting slide grooves play a role in limiting and guiding the movement of the slider 802. The symmetrical arrangement of the center of the circle enables the plurality of clamps 803 to clamp the workpiece from multiple directions, further enhancing the stable clamping effect.

[0029] Further as Figure 4 As shown, it is worth explaining in detail that a threaded groove corresponding to the threaded rod 805 is opened between the welding turntable 7 and the through groove 801, and the threaded rod 805 is rotatably connected to the inner wall of the threaded groove. Under the action of the threaded groove, the threaded rod 805 is ensured to be able to move inward while rotating, providing driving force for the slider 802 to move inward.

[0030] This solution has the following working process: in actual use, the workpiece to be welded is placed on the top of the welding turntable 7, and the rotating plate 806 drives the threaded rod 805 to rotate, so that the slider 802 moves inward, driving multiple clamps 803 to clamp and fix the workpiece from multiple directions, and then turning on the servo motor 5 to drive the second rotating shaft 6 to rotate stably, so that the welding turntable 7 drives the workpiece to rotate and cooperate with the electron beam to perform welding. When the welding angle of the workpiece needs to be changed, rotating the rocker 13 can drive the worm 12 to rotate, so that the worm gear 9 drives the first rotating shaft 3 to rotate, so that the mounting frame 4 rotates to drive the welding turntable 7 to flip and change the angle, thereby avoiding welding dead angles in the workpiece.

[0031] In summary: by setting the worm wheel 9 and the worm 12 to cooperate with each other, when the welding angle of the workpiece needs to be changed, rotating the rocker 13 can drive the worm 12 to rotate, so that the worm wheel 9 drives the first rotating shaft 3 to rotate, so that the mounting frame 4 rotates to drive the welding turntable 7 to flip and change the angle, thereby avoiding welding dead corners of the workpiece and improving the welding effect. At the same time, the transmission of the worm wheel 9 and the worm 12 has a self-locking feature, which can effectively prevent reversal and increase the safety of the device; by setting a fixing mechanism 8, multiple clamps 803 clamp the workpiece from multiple directions, so that the workpiece is stably installed on the top of the welding turntable 7, avoiding sliding during welding, and improving welding stability.

Claims

1. A reversible turntable device for vacuum electron beam welding, comprising a bottom tank (1), characterized in that: A plurality of supporting legs (2) are fixedly connected to the bottom of the bottom groove (1); first rotating shafts (3) are rotatably connected to the inner walls on both sides of the bottom groove (1); a mounting frame (4) is fixedly connected between the two first rotating shafts (3); a servo motor (5) is installed on the lower surface of the top of the mounting frame (4); a second rotating shaft (6) corresponding to the servo motor (5) is rotatably connected to the top of the mounting frame (4); a welding turntable (7) is fixedly connected to the top of the second rotating shaft (6); a fixing mechanism (8) is arranged on the top of the welding turntable (7); one of the first rotating shafts (3) passes through the bottom groove (1) and is fixedly connected to a worm gear (9); a convex frame (10) is fixedly connected to one side of the bottom groove (1); a third rotating shaft (11) is rotatably connected between the lower surface of the top of the convex frame (10) and the upper surface of the bottom; a worm (12) is fixedly connected to the outer wall of the third rotating shaft (11); and a rocker (13) is installed on the top of the convex frame (10).

2. The reversible turntable device for vacuum electron beam welding according to claim 1, characterized in that: The bottoms of the plurality of support legs (2) are all fixedly connected with anti-skid pads.

3. The reversible turntable device for vacuum electron beam welding according to claim 1, characterized in that: The output end of the servo motor (5) passes through the top of the installation frame (4) and is fixedly connected to the second rotating shaft (6).

4. The reversible turntable device for vacuum electron beam welding according to claim 1, characterized in that: The fixing mechanism (8) comprises a plurality of through slots (801) provided inside the welding turntable (7); the inner walls of the plurality of through slots (801) are slidably connected to sliders (802); the tops of the plurality of sliders (802) are fixedly connected to clamps (803); the outer ends of the plurality of sliders (802) are fixedly connected to rotating seats (804); the outer ends of the plurality of rotating seats (804) are installed with threaded rods (805); and the outer ends of the plurality of threaded rods (805) are fixedly connected to rotating plates (806).

5. The reversible turntable device for vacuum electron beam welding according to claim 4, characterized in that: The plurality of through grooves (801) are symmetrically arranged inside the welding turntable (7) about the center of a circle, and the inner walls of the plurality of through grooves (801) are each provided with a limiting sliding groove corresponding to the sliding block (802).

6. The reversible turntable device for vacuum electron beam welding according to claim 4, characterized in that: A threaded groove corresponding to the threaded rod (805) is provided between the welding turntable (7) and the through groove (801).

7. The reversible turntable device for vacuum electron beam welding according to claim 1, characterized in that: The top of the third rotating shaft (11) passes through the top of the convex frame (10) and is fixedly connected to the rocker (13), and the worm (12) is meshed with the worm wheel (9).

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