Additive spinning composite forming device and method for thin-wall rotary body part

Abstract

The invention discloses an additive spinning composite forming device and method for a thin-wall rotary body part. The additive spinning composite forming device comprises a lifting platform, a rotating platform is installed on the lifting platform, a claw-shaped clamp is connected to the rotating platform, an additive base body is clamped by the claw-shaped clamp, and the thin-wall rotary body part is arranged on the additive base body; the thin-wall rotary body part is located between the two spinning mechanisms and the laser cladding head, the spinning mechanisms and the laser cladding head are connected to the clamping mechanism, the clamping mechanism is connected to one end of the mechanical arm, and the other end of the mechanical arm is connected to the mechanical arm base body; additive manufacturing of the thin-wall rotary body part and spinning of the additive deposition layer are synchronously achieved, material grain refinement and rearrangement are promoted through spinning of the deposition layer, the microstructure is improved, and the part performance is improved; and meanwhile, pores possibly generated in the additive manufacturing process are effectively eliminated through spinning, the compactness of the part is improved, and therefore the microstructure and the mechanical property of the thin-wall rotary body part manufactured through additive manufacturing are comprehensively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of additive and spinning composite manufacturing, and in particular relates to an additive spinning composite forming device and method for thin-walled rotating body parts. Background Art

[0002] Thin-walled rotating body parts are a type of mechanical parts with rotationally symmetrical shapes and relatively thin walls. Such parts can provide greater strength and rigidity with less mass. Due to their unique advantages, thin-walled rotating body parts are widely used in high-precision fields such as aerospace, weapons and equipment, and medical equipment. For thin-walled rotating body parts, traditional processing methods use turning, milling, forging, spinning, etc. However, due to the structural characteristics of this part, the use of traditional processing methods not only has low processing efficiency and large material loss, but also is prone to deformation during the processing process, resulting in the processing size and processing accuracy of the parts not meeting the use requirements.

[0003] Additive manufacturing technology is a technology that forms parts by stacking materials layer by layer from top to bottom. Compared with traditional processing methods, additive manufacturing technology not only has the advantages of high processing efficiency, high material utilization, and easy repair of parts, but also has small restrictions on the size and structure of parts, making it easier to achieve integrated manufacturing of complex parts. Therefore, compared with traditional processing methods, additive manufacturing technology is more suitable for the forming of thin-walled rotating parts; at the same time, additive manufacturing technology has been widely used in the manufacturing of key parts in high-precision fields such as aerospace and national defense science and technology.

[0004] However, additive manufacturing technology also has its own limitations. For example, the document "Microstructure and Mechanical Properties of 4043 Aluminum Alloy Thin-walled Parts Manufactured by TIG Additive Manufacturing" (Bai Jiuyang et al., Welding, DOI: 10.3969 / j.issn.1001-1382.2015.10.006) found that there are a large number of columnar dendrites in the additive deposition layer of 4043 aluminum alloy parts. The parts after additive manufacturing have columnar grains, uneven grains, anisotropy and porosity defects at the microstructural level, which to a certain extent led to the further development and application of additive manufacturing technology. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an additive spinning composite forming device and method for thin-walled rotating parts, which can simultaneously realize the additive manufacturing of thin-walled rotating parts and the spinning of the additive deposited layer, promote the refinement and rearrangement of the material grains through the spinning of the deposited layer, improve the microstructure, and improve the performance of the parts; at the same time, spinning also effectively eliminates the pores that may be generated in the additive manufacturing process, improves the density of the parts, and thus comprehensively improves the microstructure and mechanical properties of the additively manufactured thin-walled rotating parts.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A device for additive spinning composite forming of thin-walled rotating parts, comprising a lifting platform 10, on which a rotating platform 9 is installed, and on which a claw-shaped clamp 8 is connected, and the claw-shaped clamp 8 clamps an additive substrate 7, on which a thin-walled rotating part 6 is located; the thin-walled rotating part 6 is located between two spinning mechanisms 4 and a laser cladding head 5, and the spinning mechanisms 4 and the laser cladding head 5 are connected to a clamping mechanism 3, and the clamping mechanism 3 is connected to one end of a robotic arm 2, and the other end of the robotic arm 2 is connected to a robotic arm substrate 1.

[0008] The clamping mechanism 3 includes an upper connecting frame 3-1, the lower part of the upper connecting frame 3-1 is connected to the first servo electric cylinder 3-2, the lower telescopic end of the first servo electric cylinder 3-2 is connected to the top block 3-4, and the lower part of the top block 3-4 is connected to the square slider 3-5;

[0009] The square slider 3-5 is connected to the four first guide rails 3-3, the four first guide rails 3-3 are distributed in a rectangular shape, the upper ends of the four first guide rails 3-3 are connected to the upper connecting frame 3-1, and the lower ends of the four first guide rails 3-3 are connected to the lower connecting frame 3-9; the laser cladding head 5 is connected below the square slider 3-5;

[0010] The two sides of the square slider 3-5 are connected to one end of the first connecting rod 3-6 through a rotating shaft, the other end of the first connecting rod 3-6 is connected to the upper end of the second connecting rod 3-7 through a rotating shaft, the middle end of the second connecting rod 3-7 is connected to the lower connecting frame 3-9 through a rotating shaft, and the bottom end of the second connecting rod 3-7 is connected to one end of the third connecting rod 3-8 through a rotating shaft; the second guide rail 3-10 is connected to the bottom of the lower connecting frame 3-9, and the second guide rail 3-10 and the third connecting rod 3-8 are jointly connected to the spinning mechanism 4.

[0011] The spinning mechanism 4 includes a first slide 4-1, which is installed on a spinning connecting frame 4-2; the interior of the spinning connecting frame 4-2 is connected to the first reducer 4-8, the input shaft of the first reducer 4-8 is connected to the output shaft of the first servo motor 4-7, the output shaft of the first reducer 4-8 is connected to the first pulley 4-9, the first pulley 4-9 is connected to the second pulley 4-6 via a conveyor belt 4-10, the second pulley 4-6 is connected to the fixed shaft of the special-shaped curve rotating wheel 4-4, the two ends of the fixed shaft of the special-shaped curve rotating wheel 4-4 are connected to the upper and lower mounting plates 4-11, and the mounting plates 4-11 are connected to the spinning connecting frame 4-2; the outer side of the spinning connecting frame 4-2 is connected to a sleeve 4-3.

[0012] The claw-shaped clamp 8 comprises a clamp chassis 8-3 with two semicircular structures, and the clamp chassis 8-3 is connected to the rotating platform 9; two clamping claws 8-1 are connected to the mounting flange axis of each clamp chassis 8-3, and a spring 8-2 is connected between the two clamping claws 8-1.

[0013] The rotating platform 9 includes a turntable 9-1, which is mounted on a turntable gear 9-2, and the turntable gear 9-2 is mounted on a lifting platform 10; the turntable gear 9-2 is meshed with a pinion 9-4, and the pinion 9-4 is connected to the output shaft of a second servo motor 9-3, and the second servo motor 9-3 is mounted on the lifting platform 10.

[0014] The lifting platform 10 includes a top plate 10-1, the top plate 10-1 is connected to the rotating platform 9, and the bottom of the top plate 10-1 is connected to four support arms 10-2 through a rotating shaft, and every two support arms 10-2 are cross-symmetrical with each other and connected through a rotating shaft, and the lower end of the support arm 10-2 is connected to a slider 10-3 through a rotating shaft, and the slider 10-3 is sleeved on the slide of the bottom plate 10-10;

[0015] Two bearing supports 10-4 are connected to the bottom plate 10-10, and double-headed screws 10-5 are installed on the two bearing supports 10-4 through bearings. Two screw nuts 10-6 are connected to the double-headed screw 10-5, and each screw nut 10-6 is connected to two sliders 10-3; the input end of the double-headed screw 10-5 is connected through a coupling 10-7, a second reducer 10-8 and an output shaft of a third servo motor 10-9, and the third servo motor 10-9 is installed on the bottom plate 10-10 to control the third servo motor 10-9 to rotate and lift the top plate 10-1.

[0016] A method for using an additive spinning composite forming device for a thin-walled rotating body part comprises the following steps:

[0017] The first step is to control the third servo motor 10-9 to move the support arm 10-2, test the support capacity of the lifting platform 10, and move the top plate 10-1 to a corresponding height;

[0018] The second step is to install one petal of the claw-shaped clamp 8 on the turntable 9-1, install the additive matrix 7 into the corresponding position of the claw-shaped clamp 8, and then install the other petal of the claw-shaped clamp 8 to the corresponding position of the turntable 9-1 to clamp the additive matrix 7;

[0019] The third step is to control the robot arm 2 and adjust the angle of the clamping mechanism 3 so that the laser cladding head 5 is perpendicular to the processing plane of the additive substrate 7;

[0020] The fourth step is to control the first servo electric cylinder 3-2 to move the square slider 3-5 to the corresponding position to ensure that there is enough movement clearance between the two spinning mechanisms 4;

[0021] Step 5: Jointly control the robot arm 2 and the third servo motor 10-9 to move the spinning mechanism 4 and the laser cladding head 5 to the corresponding positions, and then control the first servo electric cylinder 3-2 to fine-tune the positions of the spinning mechanism 4 and the laser cladding head 5. Finally, the laser cladding head 5 meets the optimal printing distance, and the two special-shaped curve rotary wheels 4-4 clamp the deposited layer.

[0022] Step 6: Control the second servo motor 9-3 to make the additive substrate 7 start to rotate, open the laser cladding head 5, start the additive manufacturing of the thin-walled rotating body part 6, control the first servo motor 4-7 to make the special-shaped curve spinning wheel 4-4 synchronously spin the additive deposition layer, and complete the printing and spinning of one layer;

[0023] Step 7, after printing each layer, control the first servo electric cylinder 3-2 to fine-tune the position of the spinning mechanism 4 and the laser cladding head 5, so that the special-shaped curve spinning wheel 4-4 loosens the deposited layer;

[0024] Step 8: Determine the printing position of the next layer according to the curvature and size of the part, calculate the movement angle of the robot arm 2 and the third servo motor 10-9 by the controller, and execute steps 5 to 7 in a loop until the processing of the thin-walled rotating body part 6 is completed;

[0025] Step 9: turn off the laser cladding head 5, turn off the first servo motor 4-7, turn off the second servo motor 9-3, control the first servo electric cylinder 3-2 to adjust the position of the spinning mechanism 4 to ensure that there is enough movement clearance between the two spinning mechanisms 4, and control the third servo motor 10-9 to move the top plate 10-1 to the corresponding height to facilitate the removal of the thin-walled rotating body part 6;

[0026] The tenth step is to disassemble one petal of the claw-shaped fixture 8 and take out the processed thin-walled rotating body part 6.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] Compared with the traditional single additive manufacturing technology, the present invention combines spinning with additive manufacturing. In the additive process, the deposition layer is spun to promote the grain refinement and rearrangement of the deposition layer material, thereby reducing its anisotropy. At the same time, spinning also effectively eliminates the holes generated in the additive manufacturing process, improves the density of the parts, and thus comprehensively improves the microstructure and mechanical properties of the additively manufactured thin-walled rotating body parts. In addition, the present invention has the following advantages:

[0029] (1) A high degree of integration of the additive composite spinning process is achieved. The present invention integrates a robotic arm and an additive composite spinning structure, and the present invention can be used to complete the manufacture of thin-walled rotating body parts;

[0030] (2) The device uses servo motors to control the movement of each component, realizing the digitization of the manufacturing process. Compared with traditional manufacturing methods, it not only improves processing efficiency but also reduces processing costs;

[0031] (3) The device is simple and has low manufacturing cost, strong applicability, and high processing freedom. It is suitable for high-precision forming of complex thin-walled rotating parts of different sizes and with complex curvatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is an overall schematic diagram of the device according to an embodiment of the present invention.

[0033] Figure 2 Schematic diagram of the clamping mechanism of the device according to the embodiment of the present invention.

[0034] Figure 3 It is a schematic diagram of the spinning mechanism of the device according to an embodiment of the present invention.

[0035] Figure 4 Schematic diagram of a claw-shaped clamp according to an embodiment of the present invention.

[0036] Figure 5 Schematic diagram of a rotating platform of an embodiment of the present invention.

[0037] Figure 6 It is a schematic diagram of a lifting platform of an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The present invention is described below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] like Figure 1 As shown, an additive spinning composite forming device for thin-walled rotating parts includes a lifting platform 10, a rotating platform 9 is installed on the lifting platform 10, a claw-shaped clamp 8 is connected to the rotating platform 9, the claw-shaped clamp 8 clamps the additive substrate 7, and the additive substrate 7 is a thin-walled rotating part 6; the thin-walled rotating part 6 is located between two spinning mechanisms 4 and a laser cladding head 5, the spinning mechanism 4 and the laser cladding head 5 are connected to the clamping mechanism 3, the clamping mechanism 3 is connected to one end of a robot arm 2, and the other end of the robot arm 2 is connected to the robot arm base 1.

[0040] like Figure 2 As shown, the clamping mechanism 3 includes an upper connecting frame 3-1, an electric cylinder mounting hole is opened at the bottom of the upper connecting frame 3-1, the upper fixed end of the first servo electric cylinder 3-2 is inserted into the electric cylinder mounting hole, and is installed on the upper connecting frame 3-1 by bolt connection; the lower telescopic end of the first servo electric cylinder 3-2 is inserted into the top block 3-4, and the lower part of the top block 3-4 is connected to the square slider 3-5 by bolts;

[0041] The square slider 3-5 is connected to four first guide rails 3-3, the four first guide rails 3-3 are distributed in a rectangular shape, the upper ends of the four first guide rails 3-3 are connected to the upper connecting frame 3-1, and the lower ends of the four first guide rails 3-3 are connected to the lower connecting frame 3-9;

[0042] The laser cladding head 5 is connected to the bottom of the square slider 3-5 by bolts;

[0043] The two sides of the square slider 3-5 are connected to one end of the first connecting rod 3-6 through a rotating shaft, and the rotating shaft is fixed to the square slider 3-5 by bolts, and the first connecting rod 3-6 can rotate around the rotating shaft; the other end of the first connecting rod 3-6 is connected to the upper end of the second connecting rod 3-7 through the rotating shaft, the middle end of the second connecting rod 3-7 is connected to the lower connecting frame 3-9 through the rotating shaft, and the bottom end of the second connecting rod 3-7 is connected to one end of the third connecting rod 3-8 through the rotating shaft; the second guide rail 3-10 is connected to the lower part of the lower connecting frame 3-9 by bolts, and the second guide rail 3-10 and the third connecting rod 3-8 are jointly connected to the spinning mechanism 4.

[0044] like Figure 3 As shown, the spinning mechanism 4 includes a first slide 4-1, the first slide 4-1 is installed on the spinning connection frame 4-2 by bolts, and the second guide rail 3-10 is connected to the first slide 4-1; the inside of the spinning connection frame 4-2 is connected to the first reducer 4-8 by bolts, the input shaft of the first reducer 4-8 is connected to the output shaft of the first servo motor 4-7, and the first servo motor 4-7 is installed on the first reducer 4-8 by bolts; the output shaft of the first reducer 4-8 is connected to the first pulley 4-9 by a key, and the first pulley 4-9 is connected to the second pulley 4 through the conveyor belt 4-10. -6 is connected, the first pulley 4-9 transmits power to the second pulley 4-6 through the conveyor belt 4-10; the second pulley 4-6 is connected to the fixed shaft of the special-shaped curve wheel 4-4 through a key, and the two ends of the fixed shaft of the special-shaped curve wheel 4-4 are connected to the upper and lower mounting plates 4-11, and the mounting plates 4-11 are connected to the spinning connection frame 4-2 through bolts, and the special-shaped curve wheel 4-4 is installed on the spinning connection frame 4-2 through the mounting plates 4-11; the outer side of the spinning connection frame 4-2 is connected with a sleeve 4-3, and the sleeve 4-3 is connected to the other end of the third connecting rod 3-8 through a rotating shaft.

[0045] like Figure 4 As shown, the claw-shaped clamp 8 includes a clamp chassis 8-3 with two semicircular structures, and the clamp chassis 8-3 is connected to the rotating platform 9 by bolts; two clamping claws 8-1 are connected to the mounting flange shaft of each clamp chassis 8-3 and fixed by nuts; a spring 8-2 is connected between the two clamping claws 8-1, and the thin-walled rotating body part 6 is clamped by the elastic force of the spring 8-2; when in use, first fix one claw-shaped clamp 8 on the rotating platform 9 by bolts, then clamp the thin-walled rotating body part 6 into the claw-shaped clamp 8, and then fix the other claw-shaped clamp 8 on the rotating platform 9 by bolts.

[0046] like Figure 5 As shown, the rotating platform 9 includes a turntable 9-1, which is mounted on a turntable gear 9-2 through a key, and the turntable gear 9-2 is mounted on the lifting platform 10 through an interference fit in the shaft hole; the turntable gear 9-2 is meshed with a pinion 9-4, and the pinion 9-4 is connected to the output shaft of the second servo motor 9-3 through a key, and the second servo motor 9-3 is mounted on the lifting platform 10 through bolts, and the power of the second servo motor 9-3 is transmitted to the turntable 9-1 through the pinion 9-4 and the turntable gear 9-2.

[0047] like Figure 6 As shown, the lifting platform 10 includes a top plate 10-1, the top plate 10-1 is connected to the rotating platform 9, and the bottom of the top plate 10-1 is connected to four support arms 10-2 through a rotating shaft, and the rotating shaft is fixed by a nut; every two support arms 10-2 are cross-symmetrical with each other and connected by a rotating shaft, and the lower end of the support arm 10-2 is connected to a slider 10-3 through a rotating shaft, and the rotating shaft is fixed by a nut, and the slider 10-3 is sleeved on the slide of the bottom plate 10-10;

[0048] Two bearing supports 10-4 are connected to the bottom plate 10-10 by bolts, and double-headed screws 10-5 are installed on the two bearing supports 10-4 through bearings. Two screw nuts 10-6 are connected to the double-headed screw 10-5, and each screw nut 10-6 is connected to two sliders 10-3 by bolts; the input end of the double-headed screw 10-5 is connected through a coupling 10-7, a second reducer 10-8 and an output shaft of a third servo motor 10-9, and the third servo motor 10-9 is installed on the bottom plate 10-10 by bolts, and the third servo motor 10-9 is controlled to rotate and lift the top plate 10-1.

[0049] A method for using an additive spinning composite forming device for a thin-walled rotating body part comprises the following steps:

[0050] The first step is to control the third servo motor 10-9 to move the support arm 10-2, test the support capacity of the lifting platform 10, and move the top plate 10-1 to a suitable height to facilitate the installation of the thin-walled rotating body part 6 and the claw-shaped clamp 8;

[0051] The second step is to install one petal of the claw-shaped clamp 8 on the turntable 9-1, install the additive matrix 7 into the corresponding position of the claw-shaped clamp 8, and then install the other petal of the claw-shaped clamp 8 to the corresponding position of the turntable 9-1, thereby clamping the additive matrix 7;

[0052] The third step is to control the robot arm 2 and adjust the angle of the clamping mechanism 3 so that the laser cladding head 5 is perpendicular to the processing plane of the additive substrate 7, thereby ensuring the processing quality;

[0053] The fourth step is to control the first servo electric cylinder 3-2 to move the square slider 3-5 to a suitable position to ensure that there is enough clearance between the two spinning mechanisms 4 to prevent damage to the spinning wheel and the thin-walled rotating body part 6 during movement;

[0054] Step 5: Jointly control the robot arm 2 and the third servo motor 10-9 to move the spinning mechanism 4 and the laser cladding head 5 to the corresponding positions, and then control the first servo electric cylinder 3-2 to fine-tune the positions of the spinning mechanism 4 and the laser cladding head 5. Finally, the laser cladding head 5 meets the optimal printing distance, and the two special-shaped curve spinning wheels 4-4 clamp the deposited layer, and the spinning force is greater than 10KN.

[0055] Step 6: Control the second servo motor 9-3 to make the additive substrate 7 start to rotate at a lower speed. The lower rotation speed is conducive to improving the processing quality. Turn on the laser cladding head 5 to start the additive manufacturing of the thin-walled rotating body part 6. Control the first servo motor 4-7 to make the special-shaped curve spinning wheel 4-4 synchronously spin the additive deposition layer, thereby completing the printing and spinning of one layer.

[0056] Step 7: After printing each layer, control the first servo electric cylinder 3-2 to fine-tune the position of the spinning mechanism 4 and the laser cladding head 5, so that the special-shaped curve rotating wheel 4-4 loosens the deposited layer, ensuring that the rotating wheel and the thin-walled rotating body part 6 do not come into contact during the movement;

[0057] Step 8: Determine the printing position of the next layer according to the curvature and size of the part, calculate the movement angle of the robot arm 2 and the third servo motor 10-9 by the controller, and execute steps 5 to 7 in a loop until the processing of the thin-walled rotating body part 6 is completed;

[0058] Step 9: turn off the laser cladding head 5, turn off the first servo motor 4-7, turn off the second servo motor 9-3, control the first servo electric cylinder 3-2 to adjust the position of the spinning mechanism 4 to ensure that there is enough movement clearance between the two spinning mechanisms 4, and control the third servo motor 10-9 to move the top plate 10-1 to a suitable height to facilitate the removal of the thin-walled rotating body part 6;

[0059] The tenth step is to disassemble one petal of the claw-shaped fixture 8 and take out the processed thin-walled rotating body part 6.

Claims

1. An additive spinning composite forming device for thin-walled rotating body parts, comprising a lifting platform (10), characterized in that: A rotating platform (9) is installed on the lifting platform (10), and a claw-shaped clamp (8) is connected to the rotating platform (9), and the claw-shaped clamp (8) clamps the additive matrix (7), and a thin-walled rotating body part (6) is on the additive matrix (7); the thin-walled rotating body part (6) is located between two spinning mechanisms (4) and a laser cladding head (5), and the spinning mechanisms (4) and the laser cladding head (5) are connected to a clamping mechanism (3), and the clamping mechanism (3) is connected to one end of a mechanical arm (2), and the other end of the mechanical arm (2) is connected to the mechanical arm matrix (1).

2. The device according to claim 1, characterized in that: The clamping mechanism (3) comprises an upper connecting frame (3-1), the lower part of the upper connecting frame (3-1) is connected to a first servo electric cylinder (3-2), the lower telescopic end of the first servo electric cylinder (3-2) is connected to a top block (3-4), and the lower part of the top block (3-4) is connected to a square slider (3-5); The square slider (3-5) is connected to four first guide rails (3-3), the four first guide rails (3-3) are distributed in a rectangular shape, the upper ends of the four first guide rails (3-3) are connected to an upper connecting frame (3-1), and the lower ends of the four first guide rails (3-3) are connected to a lower connecting frame (3-9); the bottom of the square slider (3-5) is connected to a laser cladding head (5); The two sides of the square slider (3-5) are connected to one end of the first connecting rod (3-6) through a rotating shaft, the other end of the first connecting rod (3-6) is connected to the upper end of the second connecting rod (3-7) through a rotating shaft, the middle end of the second connecting rod (3-7) is connected to the lower connecting frame (3-9) through a rotating shaft, and the bottom end of the second connecting rod (3-7) is connected to one end of the third connecting rod (3-8) through a rotating shaft; the lower part of the lower connecting frame (3-9) is connected to the second guide rail (3-10), and the second guide rail (3-10) and the third connecting rod (3-8) are connected to the spinning mechanism (4) together.

3. The device according to claim 1, characterized in that: The spinning mechanism (4) comprises a first slide (4-1), which is mounted on a spinning connection frame (4-2); the inside of the spinning connection frame (4-2) is connected to a first reducer (4-8), the input shaft of the first reducer (4-8) is connected to the output shaft of a first servo motor (4-7), the output shaft of the first reducer (4-8) is connected to a first pulley (4-9), the first pulley (4-9) is connected to a second pulley (4-6) via a conveyor belt (4-10), the second pulley (4-6) is connected to a fixed shaft of a special-shaped curve rotating wheel (4-4), the two ends of the fixed shaft of the special-shaped curve rotating wheel (4-4) are connected to upper and lower mounting plates (4-11), the mounting plate (4-11) is connected to the spinning connection frame (4-2); the outer side of the spinning connection frame (4-2) is connected to a sleeve (4-3).

4. The device according to claim 1, characterized in that: The claw-shaped clamp (8) comprises a clamp chassis (8-3) with two semicircular structures, and the clamp chassis (8-3) is connected to a rotating platform (9); two clamping claws (8-1) are connected to the mounting flange shaft of each clamp chassis (8-3), and a spring (8-2) is connected between the two clamping claws (8-1).

5. The device according to claim 1, characterized in that: The rotating platform (9) comprises a turntable (9-1), the turntable (9-1) is mounted on a turntable gear (9-2), and the turntable gear (9-2) is mounted on a lifting platform (10); the turntable gear (9-2) is meshed with a pinion gear (9-4), the pinion gear (9-4) is connected to an output shaft of a second servo motor (9-3), and the second servo motor (9-3) is mounted on the lifting platform (10).

6. The device according to claim 1, characterized in that: The lifting platform (10) comprises a top plate (10-1), the top of the top plate (10-1) is connected to a rotating platform (9), the bottom of the top plate (10-1) is connected to four support arms (10-2) via a rotating shaft, every two support arms (10-2) are cross-symmetrical with each other and connected via a rotating shaft, the lower end of the support arm (10-2) is connected to a slider (10-3) via a rotating shaft, and the slider (10-3) is sleeved on the slide of the bottom plate (10-10); Two bearing supports (10-4) are connected to the bottom plate (10-10), and the two bearing supports (10-4) are equipped with double-headed screws (10-5) via bearings. Two screw nuts (10-6) are connected to the double-headed screw (10-5), and each screw nut (10-6) is connected to two sliders (10-3). The input end of the double-headed screw (10-5) is connected via a coupling (10-7), a second reducer (10-8) and an output shaft of a third servo motor (10-9), and the third servo motor (10-9) is installed on the bottom plate (10-10), and the third servo motor (10-9) is controlled to rotate and lift the top plate (10-1).

7. A method for using the additive spinning composite forming device for thin-walled rotating body parts according to any one of claims 1 to 6, The following steps are involved: The first step is to control the third servo motor (10-9) to move the support arm (10-2), test the support capacity of the lifting platform (10), and move the top plate (10-1) to a corresponding height; The second step is to install one petal of the claw-shaped clamp (8) on the turntable (9-1), install the additive material base (7) into the corresponding position of the claw-shaped clamp (8), and then install the other petal of the claw-shaped clamp (8) to the corresponding position of the turntable (9-1) to clamp the additive material base (7); The third step is to control the robot arm (2) and adjust the angle of the clamping mechanism (3) so that the laser cladding head (5) is perpendicular to the processing plane of the additive substrate (7); The fourth step is to control the first servo electric cylinder (3-2) to move the square slider (3-5) to a corresponding position to ensure that there is enough movement clearance between the two spinning mechanisms (4); The fifth step is to control the robot arm (2) and the third servo motor (10-9) to move the spinning mechanism (4) and the laser cladding head (5) to corresponding positions, and then control the first servo electric cylinder (3-2) to fine-tune the positions of the spinning mechanism (4) and the laser cladding head (5), so that the laser cladding head (5) finally meets the optimal printing distance, and the two special-shaped curve rotary wheels (4-4) clamp the deposited layer; The sixth step is to control the second servo motor (9-3) to start the additive substrate (7) to rotate, open the laser cladding head (5), start the additive manufacturing of the thin-walled rotating body part (6), and control the first servo motor (4-7) to make the special-shaped curve spinning wheel (4-4) synchronously spin the additive deposition layer to complete the printing and spinning of one layer; Step 7, after printing each layer, control the first servo electric cylinder (3-2) to fine-tune the position of the spinning mechanism (4) and the laser cladding head (5), so that the special-shaped curve spinning wheel (4-4) loosens the deposited layer; In the eighth step, the printing position of the next layer is determined according to the curvature and size of the part, the controller calculates the movement angle of the robot arm (2) and the third servo motor (10-9), and the fifth step to the seventh step are executed cyclically until the processing of the thin-walled rotating body part (6) is completed; The ninth step is to close the laser cladding head (5), close the first servo motor (4-7), close the second servo motor (9-3), control the first servo electric cylinder (3-2) to adjust the position of the spinning mechanism (4) to ensure that there is enough movement clearance between the two spinning mechanisms (4), and control the third servo motor (10-9) to move the top plate (10-1) to a corresponding height to facilitate the removal of the thin-walled rotating body part (6); The tenth step is to disassemble one petal of the claw-shaped fixture (8) and take out the processed thin-walled rotating body part (6).

Images