Shot blasting treatment device and method for spaceflight parts

Abstract

According to the spaceflight part shot blasting treatment device and method, visual shooting is conducted on spaceflight parts, rib distribution on the spaceflight parts is recognized based on the shooting result, and the spaceflight parts are divided into a non-rib area, a reinforcing area and a sufficient strength area based on rigidity distribution based on the rib distribution; according to the rigidity distribution condition and the rib distribution condition of different areas, the relative position and the relative included angle of the axis of shots sprayed by the shot blasting device relative to the current area of the part are adjusted, quick and efficient shot blasting forming is carried out on the areas with different rigidity distribution by controlling shot blasting parameters, and the surface quality of shot blasting forming is guaranteed.

Description

Technical Field

[0001] This invention belongs to the technical field of shot peening technicians for aerospace components, specifically relating to a shot peening device and method for aerospace components. Background Technology

[0002] Shot peening is a common processing technique for aerospace components. Shot peening involves bombarding a large number of shot particles onto a forming surface, causing extensive plastic deformation and achieving high forming efficiency. However, aerospace components are typically composite parts with curved surfaces and ribs. The curved and ribbed structure results in high bending stiffness, and the varying distribution of these surfaces and ribs leads to discontinuous stiffness variations. Existing shot peening equipment and methods are ill-suited to addressing the uneven stiffness distribution on aerospace components, resulting in unsatisfactory final forming results.

[0003] Therefore, in view of the problems of poor forming effect and insufficient processing efficiency of existing technology in the shot peening process of aerospace parts with multiple curved surfaces and multiple ribs, the present invention discloses a shot peening treatment device and treatment method for aerospace parts. Summary of the Invention

[0004] This invention discloses a shot peening device and method for aerospace components, which can adjust the shot peening parameters and the position of the shot peening axis relative to the component for different stiffness distribution areas on the component, so as to achieve rapid and effective shot peening forming of areas with different stiffness distributions.

[0005] This invention is achieved through the following technical solution: A shot peening device for aerospace components includes a shot peening chamber. Inside the chamber is a flexible support device for conformally supporting the aerospace components. Above the flexible support device are a shot peening device, a visual recognition device, and a laser projection device. The shot peening device includes a three-axis moving part and a mounting plate mounted on the three-axis moving part. Several shot peening units are circumferentially mounted on the mounting plate. Each shot peening unit includes a rotating part, an angled part, and a shot peening part. The rotating part is connected to the mounting plate and drives the shot peening part to rotate circumferentially. The shot peening part is connected to the rotating part via the angled part, which adjusts the angle between the shot peening axis of the shot peening part and the horizontal direction. The visual recognition device identifies the positions of ribs on the aerospace components. The laser projection device projects different processing areas based on the rib positions. The rotating part and the angled part drive the shot peening part to perform shot peening on different processing areas with different shot peening attitudes and parameters.

[0006] To better realize the present invention, the rotating part further includes a radial cylinder, a slide table, and a turntable assembly. The slide table is slidably mounted on the mounting plate along a radial path passing through the center of the mounting plate. A radial cylinder is provided on one side of the slide table to drive the slide table to slide radially. A turntable assembly is rotatably mounted on the slide table. The bottom of the turntable assembly is connected to a shot peening part through an off-angle portion.

[0007] To better realize the present invention, the turntable assembly further includes a turntable, a motor, a gear ring, and a gear. The turntable is rotatably mounted on the bottom of the slide table. A gear ring is sleeved on the outer side of the turntable. A motor is mounted on the bottom of the slide table. A gear is sleeved on the output shaft of the motor. The gear meshes with the gear ring.

[0008] To better realize the present invention, the deflection section further includes a rotating shaft, a lever, an adjusting cylinder, and a connecting seat. The connecting seat is mounted on a turntable, and a rotating shaft is rotatably mounted on the connecting seat. One side of the rotating shaft is connected to the shot peening section, and the other side of the rotating shaft is fixedly connected to the lever. An adjusting cylinder is mounted on the turntable, and the push rod end of the adjusting cylinder is rotatably sleeved with the end of the lever away from the rotating shaft.

[0009] To better realize the present invention, the shot peening unit further includes a shot peening gun and a laser. One end of the shot peening gun is fixedly connected to one side of the rotating shaft to rotate with the rotating shaft, and a laser is installed on one side of the shot peening gun.

[0010] To better realize the present invention, the flexible support device further includes a damping telescopic component, a central airbag, and an edge annular airbag. A conical seat is installed on the telescopic end of the damping telescopic component. A central airbag is provided at the center of the conical seat. An edge annular airbag is arranged around the central airbag. A cavity is formed between the central airbag and the edge annular airbag.

[0011] To better realize the present invention, the cavity is further connected to a negative pressure generator via a connecting pipe.

[0012] To better realize the present invention, the shot peening chamber is further connected to a protective gas system, which is used to provide inert protective gas to the interior of the shot peening chamber.

[0013] A shot peening method for aerospace components, implemented using an aerospace component shot peening device, includes the following steps: Step 1: Use a flexible support device to provide conformal support and fixation for the non-ribbed surfaces of aerospace components, and then use a visual recognition device to photograph the ribbed surfaces of the aerospace components to identify the ribbed positions. Step 2: Based on the distribution of rib positions, divide the rib surface of aerospace components into non-rib areas without ribs and rib areas with ribs; Step 3: Identify whether the ribs in the rib area intersect. The rib areas without rib intersections are classified as reinforcement areas, and the rib areas with rib intersections are classified as basic reinforcement areas. Step 4: Project the non-ribbed area, the reinforced area, and the supplementary area onto the aerospace component using a laser projection device to obtain the shot peening boundaries of different areas; Step 5: First, process the non-ribbed area, calculate the average curvature of the aerospace components in the non-ribbed area, calculate the characteristic normal of the non-ribbed area based on the average curvature, and drive the shot peening part through the rotating part and the deflection part to drive the shot peening part to perform shot peening on the non-ribbed area in a circular path from the center to the edge. Step 6: Process the reinforcement area, extract the direction of the ribs in the reinforcement area, extract the first reference angle between the side of the ribs in the reinforcement area and the aerospace component, and extract the first angle bisector of the first reference angle; drive the shot peening part to drive the shot peening part to perform shot peening on the reinforcement area along the path of the ribs by the rotating part and the deflection part. The angle between the shot peening part and the first angle bisector is less than or equal to the second angle threshold. Then drive the shot peening part to perform shot peening on the reinforcement area along the path of the ribs by the three-axis moving part. Step 7: Process the foot strength area, extract the rib direction and the characteristic normal at the rib intersection center in the foot strength area; drive the shot peening unit through the rotating part and the deflection part to perform laser shot peening on the foot strength area along the rib direction path by the three-axis moving part. Step 8: Perform forming inspection on aerospace components.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects: This invention uses visual imaging of aerospace components to identify the distribution of ribs on the components. Based on the imaging results, the components are divided into non-rib regions, reinforced regions, and fully reinforced regions based on stiffness distribution. According to the stiffness and rib distribution of different regions, the relative position and angle of the shot axis of the shot peening device relative to the current region of the component are adjusted. By controlling the shot peening parameters, rapid and efficient shot peening of regions with different stiffness distributions is achieved, ensuring the surface quality of the shot peening process. Attached Figure Description

[0015] Figure 1 A schematic diagram of a shot peening treatment device for aerospace components; Figure 2 This is a schematic diagram of the shot peening device; Figure 3 for Figure 2 Enlarged view of a portion at point A; Figure 4 A schematic diagram showing the regional division of aerospace components; Figure 5 This is a schematic diagram of the non-reinforcing bar area; Figure 6 A schematic diagram of the reinforced area; Figure 7 A schematic diagram of the strong foot area; Figure 8 This is a schematic diagram of the flexible support device.

[0016] Among them: 1-flexible support device; 2-shot peening device; 11-damping telescopic component; 12-central airbag; 13-edge annular airbag; 21-mounting plate; 22-radial cylinder; 23-slide table; 24-turntable assembly; 25-rotating shaft; 26-lever; 27-adjusting cylinder; 28-shot peening gun; 241-turntable; 242-motor; 243-gear ring; 244-gear. Detailed Implementation

[0017] Example 1: This embodiment provides a shot peening device for aerospace components, such as... Figure 1 , Figure 2 As shown, the device includes a shot peening chamber. Inside the shot peening chamber is a flexible support device 1 for conformally supporting aerospace components. Above the flexible support device 1 are a shot peening device 2, a visual recognition device, and a laser projection device. The shot peening device 2 includes a three-axis moving part and a mounting plate 21 mounted on the three-axis moving part. Several shot peening units are mounted circumferentially on the mounting plate 21. Each shot peening unit includes a rotating part, an angled part, and a shot peening part. The rotating part is connected to the mounting plate 21 and is used to drive the shot peening part to rotate circumferentially. The shot peening part is connected to the rotating part through the angled part, which is used to adjust the angle between the shot peening axis of the shot peening part and the horizontal direction. The visual recognition device is used to identify the position of ribs on the aerospace components. The laser projection device projects different processing areas according to the rib positions. The rotating part and the angled part drive the shot peening part to perform shot peening processing on different processing areas with different shot peening attitudes and parameters.

[0018] Furthermore, the shot peening chamber is connected to a protective gas system, which provides inert protective gas to the interior of the shot peening chamber.

[0019] A shot peening method for aerospace components includes the following steps: Step 1: Use flexible support device 1 to provide conformal support and fixation for the non-ribbed surface of the aerospace component, and then use a visual recognition device to photograph the ribbed surface of the aerospace component and identify the ribbed position. Step 2, as follows Figure 4 , Figure 5 As shown, based on the distribution of rib positions, the rib surface of aerospace components is divided into non-rib regions without ribs and rib regions with ribs. Step 3: Identify whether the reinforcing bars in the reinforcing bar area intersect, and divide the reinforcing bar area where no reinforcing bars intersect into the following categories: Figure 6 The reinforcement area shown is divided into the areas where the ribs intersect as follows: Figure 7 The area of ​​foot strength shown; Step 4: Project the non-ribbed area, the reinforced area, and the supplementary area onto the aerospace component using a laser projection device to obtain the shot peening boundaries of different areas; Step 5: First, process the non-ribbed area, calculate the average curvature of the aerospace components in the non-ribbed area, calculate the characteristic normal of the non-ribbed area based on the average curvature, and drive the shot peening unit through the rotating part and the deflection part to drive the shot peening part to perform shot peening on the non-ribbed area in a circular path from the center to the edge; the first angle threshold is ±15°.

[0020] Step 6: Process the reinforcement area, extract the direction of the ribs in the reinforcement area, extract the first reference angle between the side of the ribs in the reinforcement area and the aerospace component, and extract the first angle bisector of the first reference angle; drive the shot peening unit through the rotating part and the deflection part to drive the shot peening part to perform shot peening on the reinforcement area along the path of the ribs; the second angle threshold is ±10°.

[0021] Step 7: Process the foot strength region, extract the rib direction and the characteristic normal at the rib intersection center in the foot strength region; drive the shot peening unit through the rotating part and the deflection part to perform laser shot peening on the foot strength region along the rib direction path through the three-axis moving part; the angle between the shot peening axis and the characteristic normal is less than or equal to the third angle threshold.

[0022] Step 8: Perform forming inspection on aerospace components and perform ultrasonic calibration on aerospace components.

[0023] Example 2: This embodiment discloses a shot peening treatment device for aerospace components, which is an improvement on Embodiment 1, such as... Figure 2As shown, the rotating part includes a radial cylinder 22, a slide 23, and a turntable assembly 24. The slide 23 is slidably mounted on the mounting plate 21 along a radial path passing through the center of the mounting plate 21. A radial cylinder 22 is provided on one side of the slide 23 to drive the slide 23 to slide radially. The turntable assembly 24 is rotatably mounted on the slide 23. The bottom of the turntable assembly 24 is connected to a shot peening part through an off-angle portion.

[0024] A radial groove is provided on the mounting plate 21, and the slide table 23 is slidably connected to the radial groove. The extension and retraction of the radial cylinder 22 drives the slide table 23 to slide along the radial groove, thereby adjusting the radial position of the shot peening section relative to the center of the mounting plate 21. Then, the turntable assembly 24 drives the shot peening section to rotate circumferentially, adjusting the circumferential position of the shot peening section.

[0025] Furthermore, such as Figure 3 The turntable assembly 24 includes a turntable 241, a motor 242, a gear ring 243, and a gear 244. The turntable 241 is rotatably mounted on the bottom of the slide table 23. The gear ring 243 is sleeved on the outer side of the turntable 241. The motor 242 is mounted on the bottom of the slide table 23. The gear 244 is sleeved on the output shaft of the motor 242. The gear 244 meshes with the gear ring 243.

[0026] The slide table 23 is provided with mounting holes, and the turntable 241 is rotatably mounted in the mounting holes. The motor 242 drives the gear 244 to rotate, which in turn drives the gear ring 243 to rotate, and the rotation of the gear ring 243 drives the turntable 241 to rotate.

[0027] The rest of this embodiment is the same as that of Embodiment 1, so it will not be described again.

[0028] Example 3: This embodiment discloses a shot peening treatment device for aerospace components, which is optimized based on Embodiment 1 or 2, such as... Figure 2 As shown, the deflection section includes a rotating shaft 25, a lever 26, an adjusting cylinder 27, and a connecting seat. The connecting seat is mounted on a turntable 241, and the rotating shaft 25 is rotatably mounted on the connecting seat. One side of the rotating shaft 25 is connected to the shot peening section, and the lever 26 is fixedly connected to the other side of the rotating shaft 25. The adjusting cylinder 27 is mounted on the turntable 241, and the push rod end of the adjusting cylinder 27 is rotatably sleeved with the end of the lever 26 away from the rotating shaft 25.

[0029] By adjusting the extension and retraction of the cylinder 27 push rod, the lever 26 is driven to rotate. The lever 26 can then drive the rotating shaft 25 and the shot peening section on one side of the rotating shaft 25 to rotate, thereby adjusting the angle between the shot peening axis of the shot peening section and the horizontal direction.

[0030] The rest of this embodiment is the same as that of embodiment 1 or 2, so it will not be described again.

[0031] Example 4: This embodiment discloses a shot peening treatment device for aerospace components, which is an improvement on any one of embodiments 1-3, such as... Figure 2 As shown, the shot peening unit includes a shot peening gun 28 and a laser. One end of the shot peening gun 28 is fixedly connected to one side of the rotating shaft 25 so as to rotate with the rotating shaft 25. A laser is installed on one side of the shot peening gun 28.

[0032] When shot peening non-ribbed or low-intensity areas, the laser is in standby mode and does not generate a laser beam. When shot peening high-intensity areas, the laser is activated, generating a laser beam, which, in conjunction with the shot peening gun 28, performs laser shot peening on the high-intensity areas.

[0033] The rest of this embodiment is the same as any one of embodiments 1-3, so it will not be described again.

[0034] Example 5: This embodiment discloses a shot peening device for aerospace components, which is an improvement on any one of embodiments 1-4, such as... Figure 8 As shown, the flexible support device 1 includes a damping telescopic member 11, a central airbag 12, and an edge annular airbag 13. A conical seat is installed on the telescopic end of the damping telescopic member 11. A central airbag 12 is provided at the center of the conical seat. An edge annular airbag 13 is arranged around the central airbag 12. A cavity is formed between the central airbag 12 and the edge annular airbag 13.

[0035] Several flexible support devices 1 are provided for the non-ribbed surfaces of aerospace components, conforming to their shape. A central airbag 12 and edge annular airbags 13 provide conformal support for the aerospace components. By adjusting the inflation levels of the central and edge annular airbags 12 and 13, a tight fit between the central and edge annular airbags 12 and the curved surface of the aerospace components is ensured. This allows the cavity to generate negative pressure under the action of a negative pressure generator to adsorb and fix the aerospace components. Simultaneously, damping expansion joints 11 buffer the vibrations experienced by the aerospace components through their own damping expansion and contraction, keeping the aerospace components stable during shot peening.

[0036] Furthermore, the cavity is connected to a negative pressure generator via a connecting pipe.

[0037] The rest of this embodiment is the same as any one of embodiments 1-4, so it will not be described again.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A space component shot peening device comprising a shot peening cabin, characterized in that, The interior of the shot blasting cabin is provided with a flexible support device (1) for supporting aerospace parts in shape, the upper part of the flexible support device (1) is provided with a shot blasting device (2), a visual identification device and a laser projection device, the shot blasting device (2) comprises a three-axis moving part and a mounting disc (21) provided on the three-axis moving part, a plurality of shot blasting units are mounted on the mounting disc (21) in a circumferential direction, the shot blasting units comprise a rotating part, an angle adjusting part and a shot blasting part, the rotating part is connected with the mounting disc (21), the rotating part is used for driving the shot blasting part to rotate in a circumferential direction, the shot blasting part is connected with the rotating part through the angle adjusting part, and the angle adjusting part is used for adjusting the included angle between the shot blasting axis of the shot blasting part and the horizontal direction; the visual identification device is used for identifying the rib position on the aerospace part, the laser projection device projects different processing areas according to the rib position, and the rotating part, the angle adjusting part and the shot blasting part are used for shot blasting the different processing areas in different shot blasting postures and shot blasting parameters.

2. The space hardware shot peening device of claim 1 wherein, The rotating part comprises a radial cylinder (22), a sliding table (23) and a rotating disc assembly (24), the sliding table (23) is slidingly installed on the mounting disc (21) along the radial direction through the center of the mounting disc (21), and the sliding table (23) is provided with the radial cylinder (22) on one side, which drives the sliding table (23) to slide in the radial direction; the rotating disc assembly (24) is rotationally arranged on the sliding table (23), and the bottom of the rotating disc assembly (24) is connected with the shot blasting part through the angle adjusting part.

3. The space hardware shot peening device of claim 2 wherein, The rotating disc assembly (24) comprises a rotating disc (241), a motor (242), a gear ring (243) and a gear (244), the rotating disc (241) is rotationally installed at the bottom of the sliding table (23), the gear ring (243) is sleeved on the outer side of the rotating disc (241), the motor (242) is installed at the bottom of the sliding table (23), the gear (244) is sleeved on the output shaft of the motor (242), and the gear (244) is in meshing connection with the gear ring (243).

4. The space hardware shot peening device of claim 3 wherein, The angle adjusting part comprises a rotating shaft (25), a shifting rod (26), an adjusting cylinder (27) and a connecting seat, the connecting seat is installed on the rotating disc (241), the rotating shaft (25) is rotationally installed on the connecting seat, one side of the rotating shaft (25) is connected with the shot blasting part, and the other side of the rotating shaft (25) is fixedly connected with the shifting rod (26); the adjusting cylinder (27) is installed on the rotating disc (241), and the push rod end of the adjusting cylinder (27) is rotationally sleeved with the end of the shifting rod (26) away from the rotating shaft (25).

5. The space hardware shot peening device of claim 4 wherein, The shot blasting part comprises a shot blasting gun (28) and a laser, one end of the shot blasting gun (28) is fixedly connected with one side of the rotating shaft (25) to rotate with the rotating shaft (25), and the laser is installed on one side of the shot blasting gun (28).

6. A shot peening device for aerospace components as claimed in any one of claims 1 to 5, wherein, The flexible support device (1) comprises a damping telescopic piece (11), a center air bag (12) and an edge annular air bag (13), a tapered seat is mounted on the telescopic end of the damping telescopic piece (11), the center air bag (12) is arranged at the center of the tapered seat, the edge annular air bag (13) is arranged around the center air bag (12), and a cavity is formed between the center air bag (12) and the edge annular air bag (13).

7. The space hardware shot peening device of claim 6 wherein, The cavity is connected with a negative pressure generator through a connecting pipeline.

8. A shot peening device for aerospace components as claimed in any one of claims 1 to 5, wherein, The shot blasting cabin body is connected with a protective gas system, and the protective gas system is used for providing inert protective gas to the inside of the shot blasting cabin body.

9. A method of shot peening a space component, implemented by means of a shot peening device according to any one of claims 1-8, characterized in that, The method comprises the following steps: Step 1, the flexible support device (1) is used for supporting and fixing the non-ribbed surface of the aerospace part, then a visual recognition device is used for shooting the ribbed surface of the aerospace part, and the ribbed position is recognized; Step 2, the ribbed surface of the aerospace part is divided into a non-ribbed area without ribs and a ribbed area with ribs according to the distribution of the ribbed position; Step 3, whether the ribs in the ribbed area intersect is recognized, the ribbed area without rib intersection is divided into a reinforcing area, and the ribbed area with rib intersection is divided into a sufficient strength area; Step 4, the non-ribbed area, the sufficient strength area and the reinforcing area are projected on the aerospace part through a laser projection device, and the shot blasting boundary of different areas is obtained; Step 5, the non-ribbed area is processed first, the average curvature of the aerospace part in the non-ribbed area is calculated, the characteristic normal of the non-ribbed area is calculated according to the average curvature, the angle between the shot blasting axis of the shot blasting part driven by the rotating part and the angle deviation part and the characteristic normal is less than or equal to a first angle threshold, then the shot blasting part is driven by the three-axis moving part to draw a circle from the center to the edge, and the non-ribbed area is shot blasted; Step 6, the reinforcing area is processed, the ribbed trend in the reinforcing area is extracted, the first reference angle between the ribbed side surface in the reinforcing area and the aerospace part is extracted, and the first angle bisector of the first reference angle is extracted; the angle between the shot blasting axis of the shot blasting part driven by the rotating part and the angle deviation part and the first angle bisector is less than or equal to a second angle threshold, then the shot blasting part is driven by the three-axis moving part to draw a circle from the center to the edge, and the non-ribbed area is shot blasted; Step 7, the sufficient strength area is processed, the ribbed trend in the sufficient strength area is extracted, and the characteristic normal at the center of the ribbed intersection in the sufficient strength area is extracted; the angle between the shot blasting axis of the shot blasting part driven by the rotating part and the angle deviation part and the characteristic normal is less than or equal to a third angle threshold, then the shot blasting part is driven by the three-axis moving part to draw a circle from the center to the edge, and the non-ribbed area is shot blasted; Step 8, the aerospace part is detected.

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