A welding fixture for thin-walled ring-shaped parts for aircraft

Abstract

This invention discloses a welding fixture for thin-walled ring-shaped parts used in aircraft, relating to the field of aircraft part welding technology. The invention includes a base plate, a hole block fixed to the right side of the top surface of the base plate, and an L-shaped block fixed to the left side of the top surface of the base plate. A screw is rotatably mounted through the top left side of the hole block, and the left side of the screw is rotatably connected to the right side of the L-shaped block. A servo motor is fixed to the right side of the top surface of the base plate, and the shaft of the servo motor is fixedly connected to the right side of the screw. An L-shaped plate is fixed to the top surface of the hole block, and three sliding rods are slidably mounted through the left side of the L-shaped plate. This invention uses a rubber strip that abuts against the arc edge of the thin-walled ring-shaped part to gradually form an arc, creating a flexible clamping effect on the arc edge of the thin-walled ring-shaped part. This avoids the edge of the thin-walled ring-shaped part being easily clamped and curled, resulting in poor clamping effect and affecting subsequent welding results.

Description

Technical Field

[0001] This invention relates to the field of aircraft parts welding technology, specifically to a welding fixture for thin-walled ring-shaped parts for aircraft. Background Technology

[0002] Thin-walled ring-shaped parts are widely used in aircraft engines and fuselage mechanisms. The main function of welding fixtures for thin-walled ring-shaped parts is to hold the parts for welding on machine tools. By stably holding the parts, the accuracy and quality of the parts can be effectively improved.

[0003] Patent CN217224544U discloses a machining fixture for aircraft titanium alloy parts, including a vertical plate. A first support rod is fixedly connected to the upper and lower sides of one side of the outer wall of the vertical plate. A base is fixedly connected to one side of the outer wall of the vertical plate. A first gear is rotatably connected to the inner wall of the base via a bearing. A support plate is fixedly connected to the outer wall of the first gear away from the vertical plate. An annular groove is fixedly connected to the support plate near the outer wall of the vertical plate. This patent relates to the field of aircraft manufacturing technology. This aircraft titanium alloy parts welding and machining fixture, through the cooperation of a servo motor, a first gear, a second gear, an annular groove, a first support rod, and a support plate, allows for adjustment of the fixture's angle. This enables workers to quickly process different positions of the parts, facilitating use and eliminating the need for workers to disassemble and reassemble the parts, saving work steps and reducing working time.

[0004] However, the current aircraft titanium alloy parts welding and processing fixtures have the following problems: Since the edges of most thin-walled ring-shaped parts used in aircraft are curved, the edges of these parts are prone to curling during clamping, resulting in poor clamping performance. Therefore, we propose a new aircraft thin-walled ring-shaped parts welding and processing fixture. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a welding fixture for thin-walled ring-shaped parts used in aircraft, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding fixture for thin-walled ring-shaped parts used in aircraft, comprising a base plate, a hole block fixed to the right side of the top surface of the base plate, an L-shaped block fixed to the left side of the top surface of the base plate, a screw rod rotatably mounted through the top left side of the hole block, the left side of the screw rod rotatably connected through the right side of the L-shaped block, a servo motor fixed to the right side of the top surface of the base plate, the shaft of the servo motor fixedly connected to the right side of the screw rod, an L-shaped plate fixed to the top surface of the hole block, three sliding rods slidably mounted through the left side of the L-shaped plate, and three circular plates fixed to the right sides of the three sliding rods respectively. Three springs are respectively provided between the circular plate and the L-shaped plate. Rubber strips are fixed to the left side of the three sliding rods. A U-shaped groove is fixed to the top surface of the base plate. A slider is slidably installed on the outer wall of the screw. The bottom surface of the slider slides in contact with the bottom end of the U-shaped groove. The inner wall of the slider meshes with the inner wall of the spiral groove of the screw. An L-shaped plate is fixed to the top surface of the slider. A rubber plate is fixed to the right side of the L-shaped plate. As the rubber plate moves to the right, it contacts the thin-walled ring-shaped part. Under the action of the extrusion force, the thin-walled ring-shaped part moves to the right against the rubber strip. The rubber strip against the arc edge of the thin-walled ring-shaped part gradually forms an arc shape.

[0007] According to the above technical solution, the servo motor is located on the right side of the hole block, the three springs are respectively sleeved on the three slide rods, the rubber strip is located above the screw, and the left side of the rubber strip is aligned with the right side of the rubber plate.

[0008] According to the above technical solution, bolt holes are provided on all four sides of the top surface of the base plate, a frame is provided on the bottom surface of the servo motor, the bottom surface of the frame of the servo motor is fixedly installed on the top surface of the base plate, a round hole is provided on the top front of the slider, a chip discharge port is provided on the right side of the top surface of the base plate, a groove is provided on the right side of the bottom surface of the U-shaped slide, the bottom surface of the groove of the U-shaped slide is aligned with the top surface of the chip discharge port of the base plate, and strip grooves are provided on both the front and back sides of the U-shaped slide, and the outer wall of the slider slides in contact with the inner wall of the strip groove of the U-shaped slide.

[0009] According to the above technical solution, the inner wall of the circular hole of the slider is provided with a bottom support device, which is used to support the bottom of the thin-walled ring block type part. The bottom surface of the bottom support device is provided with a scraper device, which is used to push out the welding slag accumulated in the U-shaped groove.

[0010] According to the above technical solution, a U-shaped rod is fixed to the inner wall of the circular hole of the slider, and a double-hole plate is fixed to the outer wall of the U-shaped rod. The double-hole plate is located on the right side of the second L-shaped plate. An inclined plate is fixed to the middle of the top surface of the double-hole plate, and a plate is fixed to the top surface of the inclined plate. The plate is located below the rubber plate. When the rubber strip and the rubber plate clamp the thin-walled ring-shaped part, the plate abuts against the bottom of the thin-walled ring-shaped part.

[0011] According to the above technical solution, the two right ends of the U-shaped rod are fixed with a housing. A strip-shaped opening is provided on the right side of the housing. A sliding plate is slidably installed on the inner wall of the strip-shaped opening of the housing. A strip plate is fixed on the left side of the sliding plate. An arc-shaped spring is fixed on the left side of the strip plate. The side of the arc-shaped spring away from the strip plate is fixedly connected to the right side of the inner wall of the housing. A rubber column is fixed on the right side of the sliding plate. The top left side of the hole block is on the movement trajectory of the outer wall of the rubber column. Under the elastic force of the arc-shaped spring, the rubber plate can be slowly clamped when it contacts the thin-walled ring-shaped part.

[0012] According to the above technical solution, a U-shaped frame is fixed to the bottom surface of the housing, and a U-shaped frame is fixed to the middle of the bottom surface of the U-shaped frame. A roller is rotatably installed on the inner wall of the U-shaped frame. The outer wall of the roller rolls in contact with the inner bottom end of the U-shaped groove. The roller supports the housing during the rolling process. A hook plate is fixed to the right side of the U-shaped frame, and a chamfer block is fixed to the bottom surface of the hook plate. The chamfer block slides in contact with the inner bottom end of the U-shaped groove. The hook plate drives the chamfer block to move to the right, and the chamfer block scrapes the cutting welding slag in the U-shaped groove into the groove opening.

[0013] According to the above technical solution, two connecting blocks are fixed on the top surface of the hook plate, and a semi-circular concave shell is fixed on the top surface of the two connecting blocks. A sponge block is fixedly installed at the bottom of the inside of the semi-circular concave shell. The outer wall of the sponge block slides in contact with the outer wall of the screw. The semi-circular concave shell drives the sponge block to move to the right, and the sponge block wipes the welding slag in the spiral groove of the screw.

[0014] This invention provides a welding fixture for thin-walled ring-shaped parts used in aircraft. It offers the following advantages:

[0015] (1) The present invention uses a base plate, a hole block, an L-shaped block, a screw, a servo motor, an L-shaped plate one, a slide rod, a round plate, a spring, a rubber strip, a U-shaped slide groove, a slider, and an L-shaped plate two in conjunction with a rubber plate. During the process of moving to the right, the rubber plate contacts the thin-walled ring block type part. Under the action of the extrusion force, the thin-walled ring block type part moves to the right against the rubber strip. The rubber strip drives the slide rod to move to the right. The slide rod slides to the right in the L-shaped plate one. The slide rod drives the round plate to move to the right. The round plate pulls the spring to move to the right. The spring begins to extend. The rubber strip against the arc edge of the thin-walled ring block type part gradually forms an arc shape, forming a flexible clamping on the arc edge of the thin-walled ring block type part. This prevents the edge of the thin-walled ring block type part from being easily clamped and rolled up, resulting in poor clamping effect of the thin-walled ring block type part, which in turn affects its welding processing effect.

[0016] (2) By setting the bottom support device, the U-shaped rod, double hole plate and inclined plate cooperate with the plate, rubber strip and rubber plate to hold the thin-walled ring block type parts. The plate abuts against the bottom of the thin-walled ring block type parts, so that the thin-walled ring block type parts will not be deformed during welding processing, and the lack of support under the parts will prevent the parts from deforming during welding processing.

[0017] (3) The present invention, through the setting of the bottom support device, enables the shell, slide plate, strip plate and arc-shaped spring sheet to cooperate with the rubber column. When the rubber column moves to the right, it contacts the hole block. Under the action of the extrusion force, the arc-shaped spring sheet is squeezed and deformed by the strip plate. Under the action of the elastic force of the arc-shaped spring sheet, the rubber plate can be slowly clamped when it contacts the thin-walled ring block type parts, preventing the rubber plate and rubber strip block from clamping too fast and causing the thin-walled ring block type parts to be deformed into an arc shape.

[0018] (4) The present invention uses a scraper device to make the U-shaped frame, U-shaped frame, roller and hook plate work together with the chamfer block. The roller supports the shell during the rolling process, and the hook plate drives the chamfer block to move to the right. The chamfer block scrapes the cutting welding slag in the U-shaped groove into the groove opening. The welding slag in the groove opening falls into the chip discharge port, preventing a large amount of cutting welding slag from accumulating in the U-shaped groove and causing the equipment to be stuck.

[0019] (5) The present invention uses a scraping device to make the connecting block and the semi-circular concave shell cooperate with the sponge block. The semi-circular concave shell drives the sponge block to move to the right, and the sponge block wipes the welding slag in the screw spiral groove, so as to prevent the welding slag from adhering in the screw thread groove and causing the equipment to run unevenly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the entire invention;

[0021] Figure 2 This is a schematic diagram of the internal components of the present invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of the U-shaped groove of the present invention;

[0023] Figure 4 This is a schematic diagram of the base support device of the present invention;

[0024] Figure 5 For the present invention Figure 4 A magnified view of a portion of point A in the middle;

[0025] Figure 6 This is a schematic diagram of the scraping device of the present invention;

[0026] Figure 7 For the present invention Figure 6 A magnified view of a portion of point B in the middle.

[0027] In the diagram: 1. Base plate; 2. Hole block; 3. L-shaped block; 4. Screw; 5. Servo motor; 6. L-shaped plate one; 7. Slide rod; 8. Round plate; 9. Spring; 10. Rubber strip; 11. U-shaped slide; 12. Slider; 13. L-shaped plate two; 14. Rubber plate; 15. Base support device; 151. U-shaped rod; 152. Double hole plate; 153. Inclined plate; 154. Sheet plate; 155. Shell; 156. Slide plate; 157. Strip plate; 158. Arc-shaped spring; 159. Rubber column; 16. Scraper device; 161. U-shaped frame; 162. U-shaped frame; 163. Roller; 164. Hook plate; 165. Chamfered block; 166. Connecting block; 167. Semi-arc concave shell; 168. Sponge block. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Please see Figures 1-7One embodiment of the present invention is as follows: a welding fixture for thin-walled ring-shaped parts for aircraft, comprising a base plate 1, a hole block 2 fixed on the right side of the top surface of the base plate 1, an L-shaped block 3 fixed on the left side of the top surface of the base plate 1, a screw 4 rotatably mounted through the top left side of the hole block 2, the left side of the screw 4 rotatably connected to the right side of the L-shaped block 3, a servo motor 5 fixed on the right side of the top surface of the base plate 1, the shaft of the servo motor 5 fixedly connected to the right side of the screw 4, an L-shaped plate 6 fixed on the top surface of the hole block 2, three sliding rods 7 slidably mounted through the left side of the L-shaped plate 6, three circular plates 8 fixed on the right side of the three sliding rods 7 respectively, and the three circular plates 8 and the L-shaped plate 6 rotatably connected to each other. Three springs 9 are respectively installed between the three slide rods 7. Rubber strips 10 are fixed to the left side of the three slide rods 7. A U-shaped groove 11 is fixed to the top surface of the base plate 1. A slider 12 is slidably installed on the outer wall of the screw 4. The bottom surface of the slider 12 slides in contact with the bottom end of the U-shaped groove 11. The inner wall of the slider 12 meshes with the inner wall of the spiral groove of the screw 4. An L-shaped plate 13 is fixed to the top surface of the slider 12. A rubber plate 14 is fixed to the right side of the L-shaped plate 13. The servo motor 5 is located on the right side of the hole block 2. The three springs 9 are respectively sleeved on the three slide rods 7. The rubber strip 10 is located above the screw 4. The left side of the rubber strip 10 is aligned with the right side of the rubber plate 14. The top surface of the base plate 1 has four Bolt holes are provided on all sides. A frame is provided on the bottom surface of the servo motor 5. The bottom surface of the frame of the servo motor 5 is fixedly installed on the top surface of the base plate 1. A round hole is provided on the top front of the slider 12. A chip discharge port is provided on the right side of the top surface of the base plate 1. A slot is provided on the right side of the bottom surface of the U-shaped slide 11. The bottom surface of the slot of the U-shaped slide 11 is aligned with the top surface of the chip discharge port of the base plate 1. Strip grooves are provided on both the front and back sides of the U-shaped slide 11. The outer wall of the slider 12 slides in contact with the inner wall of the strip groove of the U-shaped slide 11. The slider 12 drives the L-shaped plate 13 to move to the right. The L-shaped plate 13 drives the rubber plate 14 to move to the right. During the movement of the rubber plate 14 to the right, it interacts with the thin-walled ring block. When the parts come into contact, under the action of the extrusion force, the thin-walled ring-shaped parts move to the right against the rubber strip 10. The rubber strip 10 drives the slide rod 7 to move to the right. The slide rod 7 slides to the right in the L-shaped plate 6. The slide rod 7 drives the circular plate 8 to move to the right. The circular plate 8 pulls the spring 9 to move to the right. The spring 9 begins to extend. The rubber strip 10 against the arc edge of the thin-walled ring-shaped parts gradually forms an arc shape, forming a flexible clamping on the arc edge of the thin-walled ring-shaped parts. This avoids the edge of the thin-walled ring-shaped parts being easily clamped and rolled when the part welding fixture clamps the thin-walled ring-shaped parts, resulting in poor clamping effect of the thin-walled ring-shaped parts, which in turn affects the subsequent welding effect.

[0030] The inner wall of the circular hole of the slider 12 is provided with a bottom support device 15, which is used to support the bottom of the thin-walled ring block type part. The bottom surface of the bottom support device 15 is provided with a scraper device 16, which is used to push out the welding slag accumulated in the U-shaped groove 11.

[0031] Since the edges of thin-walled ring-shaped parts used in aircraft are mostly curved, they are prone to curling during clamping. When using the equipment, the operator places the base plate 1 in the machine tool and installs it through the bolt holes on the base plate 1. The operator places the thin-walled ring-shaped part to the left of the rubber strip 10. Simultaneously, the operator starts the servo motor 5 on the base plate 1. The shaft of the servo motor 5 begins to rotate clockwise, driving the screw 4 to rotate clockwise. The screw 4 rotates clockwise in the hole block 2 and in the L-shaped block 3. Under the constraint of the U-shaped slide groove 11, the slider 12 moves to the right in the threaded groove of the screw 4. The slider 12 slides to the right in the U-shaped slide groove 11, driving the L-shaped plate 13 to move to the right. The L-shaped plate 13 then drives the rubber plate 10... 4. Moving to the right, the rubber plate 14 contacts the thin-walled ring-shaped part during the rightward movement. Under the action of the extrusion force, the thin-walled ring-shaped part moves to the right against the rubber strip 10. The rubber strip 10 drives the slide rod 7 to move to the right. The slide rod 7 slides to the right in the L-shaped plate 6. The slide rod 7 drives the circular plate 8 to move to the right. The circular plate 8 pulls the spring 9 to move to the right. The spring 9 begins to extend, and the rubber strip 10 against the arc edge of the thin-walled ring-shaped part gradually forms an arc shape, forming a flexible clamp on the arc edge of the thin-walled ring-shaped part. This prevents the edge of the thin-walled ring-shaped part from being clamped and rolled up during use, thus avoiding the problem of poor clamping effect caused by the edge of the thin-walled ring-shaped part being easily clamped and rolled up when the part welding and processing fixture clamps the thin-walled ring-shaped part.

[0032] Please see Figures 1-7 Based on the above embodiments, in another embodiment of the present invention, a U-shaped rod 151 is fixed to the inner wall of the circular hole of the slider 12, and a double-hole plate 152 is fixed to the outer wall of the U-shaped rod 151. The double-hole plate 152 is located to the right of the L-shaped plate 13. An inclined plate 153 is fixed to the middle of the top surface of the double-hole plate 152, and a plate 154 is fixed to the top surface of the inclined plate 153. The plate 154 is located below the rubber plate 14. When the rubber strip 10 and the rubber plate 14 clamp the thin-walled ring block type part, the plate 154 abuts against the bottom of the thin-walled ring block type part, so that the thin-walled ring block type part will not be deformed during welding processing, and avoids the part being deformed during welding processing due to the lack of support under the part when the part welding processing fixture clamps the thin-walled ring block type part.

[0033] The two right ends of the U-shaped rod 151 are fixed with housings 155. A slotted opening is provided on the right side of the housing 155. A sliding plate 156 is slidably installed on the inner wall of the slotted opening of the housing 155. A strip plate 157 is fixed on the left side of the sliding plate 156. An arc-shaped spring piece 158 is fixed on the left side of the strip plate 157. The side of the arc-shaped spring piece 158 away from the strip plate 157 is fixedly connected to the right side of the inner wall of the housing 155. A rubber post 159 is fixed on the right side of the sliding plate 156. The top left side of the hole block 2 is located at the rubber post. On the movement trajectory of the outer wall of 159, the rubber column 159 contacts the hole block 2 as it moves to the right. Under the action of the extrusion force, the arc-shaped spring piece 158 is deformed by the strip plate 157. Under the elastic force of the arc-shaped spring piece 158, the rubber plate 14 can be slowly clamped when it contacts the thin-walled ring block type parts, so as to avoid the rubber plate 14 and the rubber strip block 10 clamping too fast when the part welding and processing fixture clamps the thin-walled ring block type parts, causing the thin-walled ring block type parts to be deformed into an arc shape.

[0034] A U-shaped frame 161 is fixed to the bottom surface of the housing 155. A U-shaped frame 162 is fixed to the middle of the bottom surface of the U-shaped frame 161. A roller 163 is rotatably installed on the inner wall of the U-shaped frame 162. The outer wall of the roller 163 rolls in contact with the inner bottom end of the U-shaped groove 11. A hook plate 164 is fixed to the right side of the U-shaped frame 161. A chamfer block 165 is fixed to the bottom surface of the hook plate 164. The chamfer block 165 slides in contact with the inner bottom end of the U-shaped groove 11. The roller 163 supports the housing 155 during rolling. The hook plate 164 drives the chamfer block 165 to move to the right. The chamfer block 165 scrapes the cutting slag in the U-shaped groove 11 into the groove opening. The welding slag in the groove opening falls into the chip discharge port, which avoids the accumulation of a large amount of cutting slag in the U-shaped groove 11 when the part welding processing fixture is clamping thin-walled ring-shaped parts, which would cause the equipment to jam.

[0035] Two connecting blocks 166 are fixed on the top surface of the hook plate 164. A semi-circular concave shell 167 is fixed on the top surface of the two connecting blocks 166. A sponge block 168 is fixedly installed at the bottom inside the semi-circular concave shell 167. The outer wall of the sponge block 168 slides in contact with the outer wall of the screw 4. The semi-circular concave shell 167 drives the sponge block 168 to move to the right. During the movement to the right, the sponge block 168 wipes the welding slag in the spiral groove of the screw 4, so as to avoid the welding slag adhering in the thread groove of the screw 4 when the part welding processing fixture clamps thin-walled ring block-type parts, which would cause the equipment to run unevenly.

[0036] As the slider 12 slides to the right in the U-shaped groove 11, it drives the U-shaped rod 151 to move to the right. The U-shaped rod 151 drives the double-hole plate 152 to move to the right, the double-hole plate 152 drives the inclined plate 153 to move to the right, and the inclined plate 153 drives the plate 154 to move to the right. During the movement of the plate 154 to the right, the plate 154 moves to the bottom of the thin-walled ring block part. When the rubber strip 10 and the rubber plate 14 clamp the thin-walled ring block part, the plate 154 rests against the bottom of the thin-walled ring block part, preventing the thin-walled ring block part from deforming during welding. This prevents the thin-walled ring block part from deforming during welding when the equipment is in use, thus avoiding the problem of deformation of the part during welding when the part welding fixture clamps the thin-walled ring block part because there is no support under the part.

[0037] As slider 12 moves U-shaped rod 151 to the right, U-shaped rod 151 moves housing 155 to the right, housing 155 moves slide plate 156 to the right, slide plate 156 moves rubber column 159 to the right, and rubber column 159 contacts hole block 2 during its rightward movement. Under the pressure, slide plate 156 slides to the left in the slot of housing 155, slide plate 156 moves strip 157 to the right, and strip 157 moves arc-shaped... The spring piece 158 moves to the right, and the arc-shaped spring piece 158 is squeezed and deformed by the strip plate 157. Under the elastic force of the arc-shaped spring piece 158, the rubber plate 14 can slowly clamp when it comes into contact with the thin-walled ring block type parts, preventing the rubber plate 14 and the rubber strip 10 from clamping too fast during use. This avoids the problem of the thin-walled ring block type parts being deformed into an arc shape due to the excessive clamping speed of the rubber plate 14 and the rubber strip 10 when the part welding and processing fixture clamps the thin-walled ring block type parts.

[0038] While the U-shaped rod 151 drives the housing 155 to move to the right, the housing 155 drives the loop frame 161 to move to the right, the loop frame 161 drives the U-shaped frame 162 to move to the right, and the U-shaped frame 162 drives the roller 163 to move to the right. Under the action of friction, the roller 163 rolls to the right in the U-shaped groove 11. During the rolling process, the roller 163 supports the housing 155. At the same time, the loop frame 161 drives the hook plate 164 to move to the right, and the hook plate 164 drives the chamfer block 165 to move to the right. The chamfer block 165 scrapes the cutting slag in the U-shaped groove 11 into the groove opening. The welding slag in the groove opening falls into the chip discharge port, preventing a large amount of cutting slag from accumulating in the U-shaped groove 11 during use. This avoids the problem of the part welding processing fixture jamming when clamping thin-walled ring-shaped parts due to a large amount of cutting slag accumulating in the U-shaped groove 11.

[0039] As the loop frame 161 moves the hook plate 164 to the right, the hook plate 164 moves the connecting block 166 to the right, the connecting block 166 moves the semi-circular concave shell 167 to the right, and the semi-circular concave shell 167 moves the sponge block 168 to the right. During the movement to the right, the sponge block 168 wipes the welding slag in the spiral groove of the screw 4, preventing welding slag from adhering to the thread groove of the screw 4 during use. This avoids the problem of welding slag adhering to the thread groove of the screw 4 causing the equipment to not run smoothly when the part welding processing fixture clamps thin-walled ring block-type parts.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding fixture for thin-walled ring-shaped parts for aircraft, comprising a base plate (1), wherein a hole block (2) is fixed on the right side of the top surface of the base plate (1), characterized in that: An L-shaped block (3) is fixed to the left side of the top surface of the base plate (1). A screw (4) is rotatably installed through the top left side of the hole block (2). The left side of the screw (4) is rotatably connected to the right side of the L-shaped block (3). A servo motor (5) is fixed to the right side of the top surface of the base plate (1). The shaft of the servo motor (5) is fixedly connected to the right side of the screw (4). An L-shaped plate (6) is fixed to the top surface of the hole block (2). Three sliding rods (7) are slidably installed through the left side of the L-shaped plate (6). Three circular plates (8) are fixed to the right sides of the three sliding rods (7). Three springs (9) are respectively provided between the circular plate (8) and the L-shaped plate (6). Rubber strips (10) are fixed on the left side of the three sliding rods (7). A U-shaped groove (11) is fixed on the top surface of the bottom plate (1). A slider (12) is slidably installed on the outer wall of the screw (4). The bottom surface of the slider (12) is in sliding contact with the bottom end of the U-shaped groove (11). The inner wall of the slider (12) meshes with the inner wall of the spiral groove of the screw (4). An L-shaped plate (13) is fixed on the top surface of the slider (12). A rubber plate (14) is fixed on the right side of the L-shaped plate (13). Bolt holes are provided on all four sides of the top surface of the base plate (1). A frame is provided on the bottom surface of the servo motor (5). The bottom surface of the frame of the servo motor (5) is fixedly installed on the top surface of the base plate (1). A round hole is provided on the top front of the slider (12). A chip discharge port is provided on the right side of the top surface of the base plate (1). A slot is provided on the right side of the bottom surface of the U-shaped slide groove (11). The bottom surface of the slot of the U-shaped slide groove (11) is aligned with the top surface of the chip discharge port of the base plate (1). A strip groove is provided on both the front and back sides of the U-shaped slide groove (11). The outer wall of the slider (12) slides in contact with the inner wall of the strip groove of the U-shaped slide groove (11). The inner wall of the circular hole of the slider (12) is provided with a bottom support device (15), which is used to support the bottom of the thin-walled ring block type part. The bottom surface of the bottom support device (15) is provided with a scraper device (16), which is used to push out the welding slag accumulated in the U-shaped groove (11). A U-shaped rod (151) is fixed to the inner wall of the circular hole of the slider (12), and a double-hole plate (152) is fixed to the outer wall of the U-shaped rod (151). The double-hole plate (152) is located to the right of the L-shaped plate (13). An inclined plate (153) is fixed to the middle of the top surface of the double-hole plate (152), and a plate (154) is fixed to the top surface of the inclined plate (153). The plate (154) is located below the rubber plate (14). The two right ends of the U-shaped rod (151) are fixed with housings (155). A strip-shaped opening is provided on the right side of the housing (155). A sliding plate (156) is slidably installed on the inner wall of the strip-shaped opening of the housing (155). A strip plate (157) is fixed on the left side of the sliding plate (156). An arc-shaped spring piece (158) is fixed on the left side of the strip plate (157). The side of the arc-shaped spring piece (158) away from the strip plate (157) is fixedly connected to the right side of the inner wall of the housing (155). A rubber column (159) is fixed on the right side of the sliding plate (156). The top left side of the hole block (2) is on the movement trajectory of the outer wall of the rubber column (159).

2. The welding fixture for thin-walled ring-shaped parts for aircraft according to claim 1, characterized in that: The servo motor (5) is located on the right side of the hole block (2), the three springs (9) are respectively sleeved on the three slide rods (7), the rubber strip (10) is located above the screw (4), and the left side of the rubber strip (10) is aligned with the right side of the rubber plate (14).

3. A welding fixture for thin-walled ring-shaped parts for aircraft according to claim 2, characterized in that: A spiral frame (161) is fixed to the bottom surface of the housing (155). A U-shaped frame (162) is fixed to the middle of the bottom surface of the spiral frame (161). A roller (163) is rotatably installed on the inner wall of the U-shaped frame (162). The outer wall of the roller (163) rolls in contact with the inner bottom end of the U-shaped groove (11). A hook plate (164) is fixed to the right side of the spiral frame (161). A chamfer block (165) is fixed to the bottom surface of the hook plate (164). The chamfer block (165) slides in contact with the inner bottom end of the U-shaped groove (11).

4. A welding fixture for thin-walled ring-shaped parts for aircraft according to claim 3, characterized in that: Two connecting blocks (166) are fixed on the top surface of the hook plate (164). A semi-circular concave shell (167) is fixed on the top surface of the two connecting blocks (166). A sponge block (168) is fixedly installed at the bottom inside the semi-circular concave shell (167). The outer wall of the sponge block (168) slides in contact with the outer wall of the screw (4).

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