Aviation special-shaped part side welding clamp and clamping method
By designing the chassis and shell structure of the side welding fixture for aerospace irregular parts, and combining it with a positioning device and a hydraulic system, the fixture achieves multi-angle adjustment and stable clamping, solving the problems of limited angle and inconvenient position replacement in the use of existing fixtures, and improving clamping efficiency.
Patent Information
- Application Number
- CN202511401156.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2025-12-19
AI Technical Summary
Existing side welding fixtures for aerospace irregular parts are limited in use because they are fixed to threaded holes at different positions on the mounting plate with bolts. This results in limited angles during use and inconvenience in changing positions.
A side welding fixture for aerospace irregular parts was designed, which adopts a chassis and shell structure. The shell is provided with through holes and connecting pipes. The angle and position of the shell are adjusted by a positioning device, and clamping is achieved by a hydraulic system and clamping components, including slide rods, L-shaped rods and threaded rings, to improve the flexibility and convenience of the fixture.
It enables flexible adjustment and fixation of the clamp at multiple angles, improving the convenience and efficiency of clamping and solving the problems of limited clamp angle and inconvenient position replacement.
Smart Images
Figure CN121156624A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of side welding fixture, and particularly relates to an aviation special-shaped part side welding fixture and clamping method. BACKGROUND
[0002] The aviation special-shaped part refers to a mechanical part or structural part with complex shape and non-standardization used in the field of aviation. When the aviation special-shaped part is subjected to side welding processing, a special fixture is usually used to fix the position of the special-shaped part, so as to facilitate welding.
[0003] The flexible fixture is a special fixture for conveniently clamping the special-shaped part. When the special-shaped part contacts one end of the flexible fixture, the fixture clamping element is pushed to adjust the position. The hydraulic system drives the clamping element to act by controlling the flow and pressure of the pressure oil, and the special-shaped part is clamped and released through the joint action of multiple fixtures. Before the fixture is used, a single set of fixture needs to be installed on the mounting plate at different positions. Since the fixture is fixed on the mounting plate at different positions of the threaded holes through bolts, the angle of the fixture during use is limited to a certain extent, and it is inconvenient to replace the position of the fixture, which leads to the problem that the fixture has certain limitations during use. SUMMARY
[0004] The present application aims to solve the problem that the fixture is fixed on the mounting plate at different positions of the threaded holes through bolts, the angle of the fixture during use is limited to a certain extent, and it is inconvenient to replace the position of the fixture, which leads to the problem that the fixture has certain limitations during use.
[0005] In order to achieve the above object, the present application adopts the following technical scheme: an aviation profiled part side welding clamp and clamping method, comprising: a chassis as a bearing matrix, a plurality of threaded holes are formed on the upper surface of the chassis, the threaded holes are linearly and uniformly distributed along the length direction of the chassis, forming a plurality of assembly stations, a plurality of housings are vertically arranged on the upper surface of the chassis, a through hole is formed on one side of the bottom end of the housing, the through hole is coaxially corresponding to any threaded hole, a bolt is arranged in the through hole to realize the preliminary positioning of the housing and the chassis, a connecting pipe is fixedly connected to the circumferential outer wall of the housing, the connecting pipe is in communication with the internal cavity of the housing, a clamping piece is slidably connected to the inner wall of the housing in the vertical direction, the clamping piece is in the shape of "T" and the top end protrudes out of the housing, a first spring is arranged between the bottom end of the clamping piece and the bottom end of the inner wall of the housing, the two ends of the first spring are fixedly connected to the end face of the bottom end of the clamping piece and the end face of the bottom end of the inner wall of the housing respectively, and the first spring supports the top end of the clamping piece protruding out of the housing in the natural state, a positioning device is fixed to the circumferential outer wall of the housing and located on the side of the housing away from the connecting pipe, which further limits the spatial position of the housing on the chassis after the housing is rotated around the bolt axis to adjust the angle.
[0006] The above components achieve the following effects: when using the clamp, the bolt is connected through the through hole at the bottom end of the housing and the threaded hole on the outer surface of the chassis, and the positioning device can be used to install the plurality of housings on the outer surface of the chassis, connect the hydraulic pipeline with the connecting pipe on the outer surface of each housing, and clamp the profiled part into the outer surface of the clamping piece at the top end of the housing, push the clamping piece at the top end of the housing to slide downward along the inner wall of the housing and compress the first spring, so that the clamping piece can fit the outer surface of the profiled part, then control the hydraulic assembly to make the hydraulic oil flow in the housing to adjust the pressure in the housing, fix the position of the clamping piece, and clamp and fix the profiled part through the clamping piece, which is convenient for side welding.
[0007] Preferably, the positioning device comprises: a block, which is block-shaped and fixed at the bottom end of the shell away from the outer surface of the side of the through hole, a groove rod, which is hollow rod-shaped, one end of which is fixedly connected with the top end of the block and extends away from the shell in the horizontal direction, the inner wall of the groove rod forms a sliding cavity along the length direction thereof, a sliding rod, which is adapted to be arranged in the sliding cavity of the groove rod and can slide back and forth along the length direction of the groove rod, a first screw rod, which is arranged along the length direction of the sliding rod and is threadedly connected with the inner wall of the end of the sliding rod away from the groove rod, an L-shaped rod, one end of which is rotatably connected with the end of the first screw rod close to the bottom disc through a bearing, the other end of which extends vertically above the upper surface of the bottom disc, and the middle part of the L-shaped rod is in sliding fit with the outer surface of the end of the sliding rod away from the groove rod, and rotating the first screw rod can drive the L-shaped rod to move close to or away from the bottom disc in the vertical direction, a second screw rod, which is vertically arranged, the bottom end of which is fixed to the upper surface of the sliding rod and the top end of which extends upward above the groove rod, and a threaded ring, which is threadedly connected with the outer surface of the second screw rod and can abut against the upper surface of the groove rod at the bottom end thereof, and the threaded ring can fix the position of the sliding rod in the groove rod by being screwed.
[0008] The above components achieve the following effects: when the shell is mounted on the outer surface of the bottom disc, the through hole at one side of the bottom end of the shell is aligned with a threaded hole on the outer surface of the bottom disc, a bolt is used to threadedly connect the through hole on the outer surface of the shell with the threaded hole on the outer surface of the bottom disc, and the position of one side of the bottom end of the shell is fixed, then the shell can be pushed to rotate the shell with the through hole as the center to adjust the angle and position of the shell, after the adjustment is completed, the sliding rod at one side of the shell is pulled to control the sliding rod to slide in the inner wall of the groove rod away from the shell, the position of the sliding rod and the L-shaped rod is adjusted, or the threaded ring on the outer surface of the second screw rod is directly rotated to move downward on the outer surface of the second screw rod to press the bottom end of the threaded ring against the outer surface of the groove rod to fix the position of the sliding rod, and then the first screw rod is rotated to control the L-shaped rod to move in the end of the sliding rod toward the bottom disc to abut the end of the L-shaped rod against the outer surface of the bottom disc to fix the position of the sliding rod and the groove rod outside the bottom disc.
[0009] Preferably, a second spring is arranged between the end face of the end of the sliding rod close to the groove rod and the end face of the end of the sliding cavity of the groove rod close to the shell, the second spring is arranged along the length direction of the groove rod and is fixedly connected with the end face of the sliding rod and the end face of the groove rod at two ends, when the sliding rod slides away from the shell, the second spring is stretched, and after the sliding rod is released, the second spring is reset to pull the sliding rod to move close to the shell.
[0010] The effect achieved by the above-mentioned components is that when the slide rod is pulled to move away from the groove rod, the second spring at one end of the slide rod is stretched, and the original state of the second spring can quickly pull the slide rod to move towards the groove rod, so that one end of the L-shaped rod contacts the outer surface of the chassis, thereby improving the convenience of using the positioning device.
[0011] Preferably, the threaded ring circumferential outer surface is integrally formed with a plurality of protrusions, the protrusions are uniformly distributed along the circumferential direction of the threaded ring, and extend outward along the radial direction of the threaded ring, so as to increase the friction between the hand and the threaded ring to facilitate rotation.
[0012] The effect achieved by the above-mentioned components is that when the threaded ring is rotated, the hand contacts the protrusions on the outer surface of the threaded ring, which makes it easier to control the threaded ring and prevents it from slipping, thereby improving the convenience of using the positioning device.
[0013] Preferably, the bottom end surface of the threaded ring is fixedly connected with a rubber gasket, the rubber gasket is circular and has a diameter greater than the outer diameter of the threaded ring, and when the threaded ring is tightened, the rubber gasket completely covers the bottom end of the threaded ring and tightly fits the upper surface of the groove rod.
[0014] The effect achieved by the above-mentioned components is that when the threaded ring is rotated and the rubber gasket at the bottom end of the threaded ring is pressed against the outer surface of the groove rod, the friction between the bottom end and the edge of the threaded ring and the outer surface of the groove rod can be further increased, and the position of the slide rod inside the groove rod is more stable.
[0015] Preferably, the circumferential outer surface of the slide rod is fixedly connected with a positioning rod on both sides, the positioning rod extends along the length direction of the slide rod, and the circumferential outer surface of the groove rod is provided with a guide groove along the length direction on both sides, one end of the positioning rod away from the slide rod is adapted to be embedded in the guide groove and can slide back and forth along the guide groove, so as to limit the rotation of the slide rod inside the groove rod.
[0016] The effect achieved by the above-mentioned components is that when the slide rod is moved, the positioning rods on both sides of the outer surface of the slide rod will slide on both sides of the outer surface of the groove rod, and the angle between the slide rod and the groove rod can be further limited by the positioning rods, so as to avoid the angle between the slide rod and the groove rod from being skewed when the slide rod moves too far away from the groove rod.
[0017] Preferably, the end surface of the L-shaped rod close to the chassis is fixedly connected with a rubber block, the rubber block is rectangular or arc-shaped, and when the L-shaped rod moves towards the chassis, the rubber block can tightly fit the upper surface of the chassis or the corner of the chassis.
[0018] The effect achieved by the above components is that when the L-shaped rod is controlled to rotate the first screw rod to press one end provided with the rubber block against the rubber strip on the outer surface of the base plate, the rubber block is in closer contact with the outer surface of the base plate, and the position of the slide rod and the slot rod is more stable.
[0019] Preferably, a plurality of rubber strips are fixedly connected to the four peripheral edges of the upper surface of the base plate respectively, the rubber strips are linearly and uniformly arranged along the length direction of the edges of the base plate, and the upper surfaces of the rubber strips are in adaptive contact with the rubber blocks at the bottom end of the L-shaped rod.
[0020] The effect achieved by the above components is that when the L-shaped rod is controlled to rotate the first screw rod to press one end provided with the rubber block against the rubber strip on the outer surface of the base plate, the rubber block is in closer contact with the outer surface of the base plate, and the position of the slide rod and the slot rod is more stable.
[0021] Preferably, the method comprises the steps of using any one of the aviation special-shaped part side welding clamps.
[0022] Compared with the prior art, the method has the advantages and positive effects that: In the application, the positioning device is arranged, the slide rod and the L-shaped rod capable of adjusting the horizontal position are arranged on one side of the shell, the position of one side of the shell is fixed by means of the bolts when the shell is installed, the shell can be pushed to rotate to place the shell on the outer surface of the base plate at multiple angles, the position of the shell can be directly pushed to rotate when the position of the shell is slightly adjusted, and the position of the shell on the base plate is fixed by moving the positions of the slide rod and the L-shaped rod, so that the convenience and flexibility when the clamp is used are improved. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 A three-dimensional structural schematic diagram of an aviation special-shaped part side welding clamp and a clamping method is provided for the application; Figure 2 A three-dimensional structural schematic diagram of the base plate in the aviation special-shaped part side welding clamp and the clamping method is provided for the application; Figure 3 A partial cross-sectional three-dimensional structural schematic diagram of the shell in the aviation special-shaped part side welding clamp and the clamping method is provided for the application; Figure 4 A three-dimensional structural schematic diagram of the L-shaped rod in the aviation special-shaped part side welding clamp and the clamping method is provided for the application; Figure 5 A three-dimensional structural schematic diagram of the second spring in the aviation special-shaped part side welding clamp and the clamping method is provided for the application; Figure 6 A three-dimensional structural schematic diagram of the second screw rod in the aviation special-shaped part side welding clamp and the clamping method is provided for the application.
[0024] Legend: 1, chassis; 2, positioning device; 21, protruding block; 22, groove rod; 23, sliding rod; 24, first screw rod; 25, L-shaped rod; 26, second screw rod; 27, threaded ring; 28, second spring; 29, gasket; 210, positioning rod; 211, rubber block; 3, threaded hole; 4, shell; 5, through hole; 6, connecting pipe; 7, clamping piece; 8, first spring. DETAILED DESCRIPTION
[0025] As Figures 1-4 shown, the present application provides an aviation profiled part side welding clamp and clamping method, comprising a chassis 1 and a plurality of shells 4, a plurality of threaded holes 3 are formed on the outer surface of the chassis 1, the threaded holes 3 are linearly distributed on the outer surface of the chassis 1, a through hole 5 is formed on the bottom end of the shell 4, a connecting pipe 6 is fixedly connected to the outer surface of the shell 4, a clamping piece 7 is slidingly connected to the inner wall top end of the shell 4, a first spring 8 is arranged at the bottom end of the clamping piece 7, and the two ends of the first spring 8 are respectively fixedly connected to the bottom end of the clamping piece 7 and the inner wall bottom end of the shell 4, the outer surface of the shell 4 is provided with a positioning device 2 for further limiting the position of the shell 4 on the chassis 1, when using the clamp, the threaded holes 3 on the outer surface of the chassis 1 are connected with the through hole 5 at the bottom end of the shell 4 by means of bolts, and the positioning device 2 can be used to install the plurality of shells 4 on the outer surface of the chassis 1, the hydraulic pipeline is connected to the connecting pipe 6 on the outer surface of each shell 4, when side welding the profiled part, the profiled part is clamped into the outer surface of the clamping piece 7 at the top end of the shell 4, and the clamping piece 7 at the top end of the inner wall of the profiled part shell 4 is pushed to slide downward on the inner wall of the shell 4 and compress the first spring 8, so that the clamping piece 7 can be attached to the outer surface of the profiled part, then the hydraulic assembly is controlled to make the hydraulic oil flow in the shell 4 to adjust the pressure in the shell 4, and the position of the clamping piece 7 is fixed, and the profiled part is clamped and fixed by the clamping piece 7, which is convenient for side welding.
[0026] Referring to Figures 1-6As shown, in the embodiment: the positioning device 2 includes a protrusion 21, the top end of the protrusion 21 is fixedly connected with a groove rod 22, the groove rod 22 is fixedly installed on the bottom end side of the shell 4 through the protrusion 21, the inner wall of the groove rod 22 is slidably connected with a sliding rod 23, the inner wall of the sliding rod 23 is threadedly connected with a first screw rod 24 at one end, the first screw rod 24 is rotatably connected with an L-shaped rod 25 at one end, the L-shaped rod 25 is slidably arranged at one end of the outer surface of the sliding rod 23, the top end of the sliding rod 23 is fixedly connected with a second screw rod 26, the outer surface of the second screw rod 26 is threadedly connected with a threaded ring 27, when the shell 4 is installed on the outer surface of the chassis 1, the through hole 5 on the bottom end side of the shell 4 is aligned with a threaded hole 3 on the outer surface of the chassis 1, a bolt is used to threadedly connect the through hole 5 on the outer surface of the shell 4 with the threaded hole 3 on the outer surface of the chassis 1, and the position on the bottom end side of the shell 4 is fixed, then the shell 4 can be pushed to rotate the shell 4 with the through hole 5 as the center to adjust the angle and position of the shell 4, after the adjustment is completed, the sliding rod 23 on one side of the shell 4 is pulled to control the sliding rod 23 to slide away from the shell 4 on the inner wall of the groove rod 22, the position of the sliding rod 23 and the L-shaped rod 25 is adjusted, or the threaded ring 27 on the outer surface of the second screw rod 26 is directly rotated to move downward on the outer surface of the second screw rod 26 to press the bottom end of the threaded ring 27 against the outer surface of the groove rod 22 to fix the position of the sliding rod 23, then the first screw rod 24 is rotated to control the L-shaped rod 25 to move in the direction of the chassis 1 at one end of the sliding rod 23, and the one end of the L-shaped rod 25 is abutted against the outer surface of the chassis 1 to fix the position of the sliding rod 23 and the groove rod 22 on the outer side of the chassis 1, by arranging the positioning device 2, the sliding rod 23 and the L-shaped rod 25 that can adjust the horizontal position are arranged on one side of the shell 4, after the position on one side of the shell 4 is fixed by means of a bolt when the shell 4 is installed, the shell 4 can be pushed to rotate to enable the shell 4 to be placed on the outer surface of the chassis 1 at multiple angles, and when the position of the shell 4 is slightly adjusted, the shell 4 can be directly pushed to rotate, and the position of the shell 4 on the chassis 1 is fixed by moving the position of the sliding rod 23 and the L-shaped rod 25, thereby improving the convenience and flexibility when the clamp is used.
[0027] Referring to Figures 2-6 As shown, in the embodiment: one end of the sliding rod 23 is provided with a second spring 28, the two ends of the second spring 28 are fixedly connected with one end of the sliding rod 23 and one end of the inner wall of the groove rod 22 respectively, when the sliding rod 23 is pulled to move away from the groove rod 22, the second spring 28 at one end of the sliding rod 23 is stretched, and the second spring 28 can quickly pull the sliding rod 23 to move in the direction of the groove rod 22 by restoring to the original state, so that the one end of the L-shaped rod 25 is in contact with the outer surface of the chassis 1, thereby improving the convenience when the positioning device 2 is used.
[0028] Referring to Figures 2-6As shown, in the embodiment: the outer surface of the threaded ring 27 is provided with a plurality of protrusions, the protrusions are circumferentially distributed on the outer surface of the threaded ring 27, and when the hand contacts the protrusions on the outer surface of the threaded ring 27 during pushing the threaded ring 27 to rotate, it is easier to control the threaded ring 27 from slipping, thereby improving the convenience of using the positioning device 2. The bottom end of the threaded ring 27 is fixedly connected with a rubber pad 29, and the diameter of the rubber pad 29 is larger than that of the threaded ring 27. When the threaded ring 27 is rotated to press the rubber pad 29 at the bottom end of the threaded ring 27 against the outer surface of the groove rod 22, the friction between the bottom end and the edge of the threaded ring 27 and the outer surface of the groove rod 22 can be further increased when they are in contact, and the position of the slide rod 23 inside the groove rod 22 is more stable.
[0029] Referring to Figures 2-6 As shown, in the embodiment: the outer surface of the threaded ring 27 is provided with a plurality of protrusions, the protrusions are circumferentially distributed on the outer surface of the threaded ring 27, and when the hand contacts the protrusions on the outer surface of the threaded ring 27 during pushing the threaded ring 27 to rotate, it is easier to control the threaded ring 27 from slipping, thereby improving the convenience of using the positioning device 2. The bottom end of the threaded ring 27 is fixedly connected with a rubber pad 29, and the diameter of the rubber pad 29 is larger than that of the threaded ring 27. When the threaded ring 27 is rotated to press the rubber pad 29 at the bottom end of the threaded ring 27 against the outer surface of the groove rod 22, the friction between the bottom end and the edge of the threaded ring 27 and the outer surface of the groove rod 22 can be further increased when they are in contact, and the position of the slide rod 23 inside the groove rod 22 is more stable.
[0030] Working principle: when using the clamp, use the bolt to pass through the through hole 5 on the outer surface of the shell 4 and be screwed with the threaded hole 3 on the outer surface of the chassis 1, fix the position of the bottom end of the shell 4, then push the shell 4 to rotate the shell 4 with the through hole 5 as the center to adjust the angle and position of the shell 4, pull the slide rod 23 on one side of the shell 4 to control the slide rod 23 to slide away from the shell 4 in the inner wall of the groove rod 22, adjust the position of the slide rod 23 and the L-shaped rod 25, or directly rotate the threaded ring 27 on the outer surface of the second screw rod 26 to move downward on the outer surface of the second screw rod 26 to press the bottom end of the threaded ring 27 against the outer surface of the groove rod 22 to fix the position of the slide rod 23, then rotate the first screw rod 24 to control the L-shaped rod 25 to move towards the chassis 1 at one end of the slide rod 23, and press one end of the L-shaped rod 25 against the outer surface of the chassis 1 to fix the position of the slide rod 23 and the groove rod 22 outside the chassis 1, install several shells 4 on the outer surface of the chassis 1, connect the hydraulic pipeline with the connecting pipe 6 on the outer surface of each shell 4, and when side welding the special-shaped part, clamp the special-shaped part into the outer surface of the clamping piece 7 at the top end of the shell 4, push the clamping piece 7 at the top end of the inner wall of the shell 4 to slide downward on the inner wall of the shell 4 and compress the first spring 8, so that the clamping piece 7 can fit the outer surface of the special-shaped part, then control the hydraulic assembly to make the hydraulic oil flow in the shell 4 to adjust the pressure in the shell 4, fix the position of the clamping piece 7, and clamp and fix the special-shaped part through the clamping piece 7 to facilitate side welding.
[0031] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution of the present application, according to the technical essence of the present application, still belongs to the protection scope of the technical solution of the present application. In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal connection of two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
Claims
1. An aircraft profiled member side welding fixture, characterized by, include: A chassis (1), serving as a load-bearing base, has several threaded holes (3) on its upper surface. These threaded holes (3) are linearly and evenly distributed along the length of the chassis (1) to form multiple assembly stations. Several housings (4) are vertically arranged on the upper surface of the chassis (1), and each housing (4) has a through hole (5) on one side of its bottom end. The through hole (5) is coaxially corresponding to any of the threaded holes (3) for bolts to pass through, thereby achieving the initial positioning of the housing (4) and the chassis (1). The outer circumferential wall of the housing (4) is fixedly connected. A connecting pipe (6) is connected to the cavity inside the housing (4). A clamping member (7) is slidably connected to the top of the inner wall of the housing (4) in the vertical direction. The clamping member (7) is "T" shaped and its top extends out of the housing (4). A first spring (8) is provided between the bottom end of the clamping member (7) and the bottom end of the inner wall of the housing (4). The two ends of the first spring (8) are fixedly connected to the bottom end face of the clamping member (7) and the bottom end face of the inner wall of the housing (4) respectively, and in its natural state, it supports the top of the clamping member (7) protruding out of the housing (4).
2. The side welding fixture for an aircraft profiled member according to claim 1, characterized in that, The positioning device (2) is fixed to the outer circumferential wall of the housing (4) and located on the side of the housing (4) away from the connecting pipe (6) to further restrict the spatial position of the housing (4) on the chassis (1) after the housing (4) is rotated around the bolt axis to adjust the angle.
3. The side welding fixture for an aircraft profiled member according to claim 2, wherein The positioning device (2) includes: a protrusion (21), which is block-shaped and has its bottom end fixed to the outer surface of the bottom end of the housing (4) away from the through hole (5); and a groove rod (22), which is hollow rod-shaped, with one end fixedly connected to the top end of the protrusion (21) and extending horizontally away from the housing (4), and the inner wall of the groove rod (22) forming a sliding cavity along its length.
4. The side welding fixture for an aircraft profiled member according to claim 3, wherein A sliding rod (23) is adapted to pass through the sliding cavity of the groove rod (22) and can slide back and forth along the length direction of the groove rod (22); a first screw (24) is arranged along the length direction of the sliding rod (23) and is threadedly connected to the inner wall of the end of the sliding rod (23) away from the groove rod (22); an L-shaped rod (25) is rotatably connected at one end to the end of the first screw (24) near the chassis (1) through a bearing, and the other end extends vertically to the upper surface of the chassis (1), and the middle part of the L-shaped rod (25) slides and fits against the outer surface of the end of the sliding rod (23) away from the groove rod (22). Rotating the first screw (24) can drive the L-shaped rod (25) to move closer to or away from the chassis (1) in the vertical direction.
5. The side welding fixture for an aircraft profiled member according to claim 4, wherein The second screw (26) is vertical, with its bottom end fixed to the upper surface of the slide rod (23) and its top end extending upward to the top of the groove rod (22). The threaded ring (27) is threaded to the outer surface of the second screw (26), and the bottom end of the threaded ring (27) can abut against the upper surface of the groove rod (22). Tightening the threaded ring (27) can fix the position of the slide rod (23) in the groove rod (22).
6. The side welding fixture for an aircraft profiled member according to claim 5, wherein A second spring (28) is provided between the end face of the slide rod (23) near the groove rod (22) and the end face of the sliding cavity of the groove rod (22) near the housing (4). The second spring (28) is arranged along the length direction of the groove rod (22) and its two ends are fixedly connected to the end face of the slide rod (23) and the end face of the groove rod (22) respectively. When the slide rod (23) slides away from the housing (4), the second spring (28) is stretched. After the slide rod (23) is released, the second spring (28) returns to its original position and can pull the slide rod (23) to move closer to the housing (4).
7. A side welding fixture for aerospace irregular-shaped parts according to claim 6, characterized in that, The threaded ring (27) has several protrusions integrally formed on its outer circumferential surface. The protrusions are evenly distributed along the circumferential direction of the threaded ring (27) and extend outward along the radial direction of the threaded ring (27) to increase the friction between the hand and the threaded ring (27) to facilitate rotation.
8. A side welding fixture for aerospace irregular-shaped parts according to claim 7, characterized in that, A rubber gasket (29) is fixedly connected to the bottom end face of the threaded ring (27). The rubber gasket (29) is circular and its diameter is larger than the outer diameter of the threaded ring (27). When the threaded ring (27) is tightened, the rubber gasket (29) completely covers the bottom end of the threaded ring (27) and fits tightly against the upper surface of the grooved rod (22). Positioning rods (210) are fixedly connected to the outer surfaces of the slide rod (23) on both sides. The positioning rods (210) extend along the length direction of the slide rod (23), and guide grooves along their length direction are respectively opened on the outer surfaces of the grooved rod (22) on both sides. The end of the positioning rod (210) away from the slide rod (23) is adapted to be embedded in the guide groove and can slide back and forth along the guide groove to limit the rotation of the slide rod (23) in the grooved rod (22).
9. A side welding fixture for aerospace irregular-shaped parts according to claim 8, characterized in that, A rubber block (211) is fixedly connected to one end face of the L-shaped rod (25) near the chassis (1). The rubber block (211) is rectangular or arc-shaped. When the L-shaped rod (25) moves toward the chassis (1), the rubber block (211) can fit tightly against the upper surface of the chassis (1) or the corner of the chassis (1). Several rubber strips are fixedly connected to the four edges of the upper surface of the chassis (1). The rubber strips are arranged linearly and uniformly along the edge length direction of the chassis (1), and the upper surface of the rubber strips is adapted to contact the rubber block (211) at the bottom of the L-shaped rod (25).
10. A method for side-welding and clamping irregularly shaped aerospace parts, characterized in that: The side welding fixture for aerospace irregular parts as described in any one of claims 1-9 is adopted.