Assembly tool for rivet welding of plate beam type cylinder

Abstract

The invention provides an assembly tool for rivet welding of a plate beam type cylinder, which is used in two technological processes of welding and riveting of a cylinder section of an airplane and a load-bearing structure main body of a beam, and comprises a reference platform, a first horizontal mounting plate is arranged at the upper part of the reference platform, and a profile steel support frame connected with the first horizontal mounting plate is arranged at the bottom of the reference platform; the adjustable foot margin supports are installed on the profile steel supporting frame, the bottoms of the supporting assemblies are fixed to the first horizontal installation plate, the supporting assemblies comprise the first supporting assembly and the second supporting assembly, the first supporting assembly is used for supporting the middle of a force bearing structure body, and the second supporting assembly is used for supporting the head and the tail of the force bearing structure body; a plurality of first supporting assemblies are arranged; the supporting assemblies are connected through the welding inner supporting assembly, and an outer clamping tool in the welding outer clamping tool assembly is fastened through a screw. According to the assembly tool for rivet welding of the plate beam type cylinder, the coaxiality and the roundness of a cylinder body of a rotary body can be guaranteed, and the unified positioning reference of the riveting technology and the welding technology can be met at the same time.

Description

Technical Field

[0001] The invention belongs to the field of aircraft manufacturing, and in particular relates to an assembly tool for riveting and welding plate-beam type cylindrical tubes. Background Art

[0002] During aircraft manufacturing, jigs are critical tooling equipment for ensuring the precise assembly of aircraft components. They comprise the load-bearing structure of barrel sections and beams, and require both welding and riveting. Mandrel welding is not suitable for barrel butt welds.

[0003] Most traditional aircraft jigs only meet the needs of a single manufacturing process. For example, simple welding process jigs have the problem of difficult to accurately control the positioning of multiple barrel sections, which in turn affects the accuracy of the assembly of each single piece of the rotating fuselage. However, aircraft assembly jigs enable low-rigidity parts and assembly parts to be accurately and quickly positioned, ensuring their correct geometric shape and position, and limiting their deformation. Summary of the Invention

[0004] In view of this, the present invention aims to propose an assembly tool for riveting and welding plate-beam type cylindrical tubes, so as to solve the problem that the positioning of multiple cylinder sections is difficult to accurately control in a single manufacturing process, which affects the accuracy of assembly of each single piece of the rotating fuselage and cannot guarantee its correct geometric shape and position.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] The present invention provides an assembly tool for riveting plate-beam type cylindrical tubes, which is used in two process processes of welding and riveting the load-bearing structure body of the cylindrical tube section and the beam of the aircraft, comprising a reference platform, an adjustable foot support, a support assembly, and a welding external clamping tool assembly. The reference platform is used to support the low-rigidity cylindrical tube in the load-bearing structure body, the upper part of which is a first horizontal mounting plate and the bottom part is a steel support frame connected to the first horizontal mounting plate, the adjustable foot support is installed on the steel support frame, the bottom of the support assembly is fixed to the first horizontal mounting plate, and the support assembly includes It includes a first support assembly and a second support assembly, the first support assembly is used to support the middle part of the load-bearing structure body, and the second support structure is used to support the head and tail of the load-bearing structure body. There are several first support assemblies, which are set according to the welding parts and welding deformation conditions; the support assemblies are connected by welding internal support assemblies, and the welded internal support assemblies are used to support and fix the interior of the load-bearing structure body as a whole. The outer clamping tooling in the welded external clamping tooling assembly is fastened with screws to limit the roundness of the low-rigidity cylindrical tube in the load-bearing structure body.

[0007] Furthermore, the first support assembly includes a support card, a detachable card assembly, a pin locator, and a shape locator. The support card is installed on the reference platform, the detachable card bolt is fixed to the upper part of the support card, the pin locator is installed on the detachable card, and the shape locator is installed on the detachable card. The shape locator is used to position a low-rigidity cylindrical tube. A reinforcement seat is provided at the bottom of the support card, and the reinforcement seat is locked in an L shape on the reference platform. The reinforcement seat includes a second horizontal mounting plate, a first vertical mounting plate, and a reinforcement plate. The second horizontal mounting plate is locked on the first horizontal mounting plate of the reference platform, the first vertical mounting plate is locked with the support card, and the reinforcement plate connects the first vertical mounting plate with the second horizontal mounting plate.

[0008] Furthermore, rubber pads are pasted on the opposite surfaces of each supporting card plate and the detachable card plate, and the rubber pads fit the surface of the low-rigidity cylindrical tube in the load-bearing structure body, and the shape locator fits the shape of the low-rigidity cylindrical tube of the load-bearing structure body.

[0009] Furthermore, the second support assembly has a support clip, a detachable clip assembly, a pin locator, and an outer shape locator that are the same as the first support assembly in terms of connection method and basic size, and the second support assembly also includes a truss locator, which is screwed to the support clips and the detachable clips at the front and rear ends, and is arranged relative to the arrangement of the welded inner support assembly. The truss locator on the second support assembly located at the head of the load-bearing structure body is fixed on the left end face of the second support assembly, and the truss locator on the second support assembly located at the tail of the load-bearing structure body is fixed on the right end face of the second support assembly.

[0010] The locking pin is mounted on the sliding slot, and the limit plate is mounted on the adjustable card plate in the rectangular groove of the adjustable card plate. The adjustable screw screws are used to fix the baffle on the top of the card plate. The adjustable screw screws are used to screw the limit plate in the rectangular groove. The upper part of the support card plate is provided with a first semicircular mounting groove and the lower part of the card plate is provided with a second semicircular mounting groove. The first semicircular mounting groove and the second semicircular mounting groove are opposite to each other to form a circular shape. The left and right sides of the lower part of the card plate are first vertical connecting plates, which are bolted to the second vertical connecting plates on the left and right sides of the support card plate. The bottom of the adjustable card plate is arc-shaped, and the arc is the same as the arc of the second semicircular mounting groove on the card plate.

[0011] Furthermore, the welding inner support tooling assembly includes a limit ring, a support ring, and a welded truss. Several support rings are placed according to the position of the weld. The limit ring is fixed inside the support ring by screws, and a certain gap is provided between the limit ring and the support ring. Four welded trusses are provided according to the center and circumference of the limit ring. The welded truss is fixed on the truss positioner. The welded truss is T-shaped and is clamped in the fixing groove between the limit ring and the support ring.

[0012] Furthermore, the inner circle of the low-rigidity cylindrical tube in the load-bearing structure body fits with the support ring, and the outer circle of the low-rigidity cylindrical tube fits with the rubber pads pasted on the opposite surfaces of the support clamping plate and the detachable clamping plate.

[0013] Compared to existing technologies, the assembly tool for riveting plate-beam cylindrical tubes described in the present invention has the following advantages: The assembly tool for riveting plate-beam cylindrical tubes described in the present invention uses a latch locator to accurately and quickly position the low-rigidity cylindrical tube, avoiding the difficulty in precisely controlling the positioning of multiple cylinder sections when welding. A single tool can simultaneously perform riveting and welding, avoiding the problem of secondary positioning errors caused by switching between the two processes. The coaxiality and roundness of the rotating body are ensured by the surrounding and adjustable clamping plates, allowing the butt joint gaps and step gaps of each low-rigidity cylindrical tube to be controlled to the optimal values required for welding, thereby improving weld quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0015] In the attached figure:

[0016] Figure 1 This is an overall axonometric schematic diagram of an assembly tool for riveting plate-beam type cylindrical tubes according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of a detachable clamping plate assembly in an assembly tool for riveting and welding a plate-beam type cylindrical tube according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of a welding inner support fixture assembly in an assembly fixture for riveting and welding a plate-beam type cylindrical tube according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of a welding outer clamping tool assembly in an assembly tool for riveting and welding a plate-beam type cylindrical tube according to an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 101. Reference platform; 102. Adjustable foot support; 103. Supporting pallet; 104. Removable pallet assembly; 105. Latch locator; 106. Shape locator; 107. Welded inner support assembly; 108. Truss locator; 201. Pallet; 202. Adjustable pallet; 203. Limit plate; 204. Locking pin; 205. Adjustable screw; 206. Baffle; 301. Limiting ring; 302. Support ring; 303. Welded truss; 401. External clamping fixture. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0026] See Figures 1-4As shown, this embodiment provides an assembly tool for riveting plate-beam type cylindrical tubes, which is used in two process processes of welding and riveting the load-bearing structure of the cylindrical tube section and the beam of the aircraft, including a reference platform 101, an adjustable foot support 102, a support assembly, and a welding external clamping tool assembly. The reference platform 101 is used to support the low-rigidity cylindrical tube in the load-bearing structure. The upper part of the reference platform 101 is a first horizontal mounting plate and the bottom is a steel support frame connected to the first horizontal mounting plate. The adjustable foot support 102 is installed on the steel support frame. The bottom of the support assembly is fixed to the first horizontal mounting plate. The support assembly includes a first support assembly and a second support assembly. The first support assembly is used to support the middle part of the load-bearing structure body, and the second support structure is used to support the head and tail of the load-bearing structure body. There are several first support assemblies, which are set according to the welding position and welding deformation. The support assemblies are connected by a welded internal support assembly 107, and the welded internal support assembly 107 is used to support and fix the interior of the load-bearing structure body as a whole. The outer clamping fixture 401 in the welded external clamping fixture assembly is fastened with screws to limit the roundness of the low-rigidity cylindrical tube in the load-bearing structure body.

[0027] Support plate 103 supports the low-rigidity cylindrical tube. Removable plate 104 is screwed to support plate 103 to restrict the cylindrical tube's roundness. Latch locator 105, mounted on removable plate 104, restricts the cylindrical tube's rotational and axial directions. External shape locator 106, mounted on removable plate 104, positions the low-rigidity component.

[0028] Specifically, in this embodiment, the first support assembly includes a support card 103, a detachable card assembly 104, a pin locator 105, and a shape locator 106. The support card 103 is installed on the reference platform 101, the detachable card 104 is bolted to the upper part of the support card 103, the pin locator 105 is installed on the detachable card 104, and the shape locator 106 is installed on the detachable card 104. The shape locator 106 is used to position the low-rigidity cylindrical tube single piece; a reinforcement seat is provided at the bottom of the support card 103, and the reinforcement seat is L-shaped and locked to the reference platform 101. The reinforcement seat includes a second horizontal mounting plate, a first vertical mounting plate, and a reinforcement plate. The second horizontal mounting plate is locked on the first horizontal mounting plate of the reference platform 101, the first vertical mounting plate is locked with the support card 103, and the reinforcement plate connects the first vertical mounting plate with the second horizontal mounting plate.

[0029] Specifically, in this embodiment, rubber pads are pasted on the opposite surfaces of each supporting card plate 103 and the detachable card plate 104, and the rubber pads are fitted with the surface of the low-rigidity cylindrical tube in the load-bearing structure body, and the shape locator 106 is fitted with the shape of the low-rigidity cylindrical tube of the load-bearing structure body.

[0030] Specifically, in this embodiment, the second support assembly has a support clip 103, a detachable clip assembly 104, a pin locator 105, and an outer shape locator 106 that are the same as the first support assembly in connection method and basic dimensions, and the second support assembly also includes a truss locator 108. The truss locator 108 is screwed onto the front and rear end support clips 103 and the detachable clip 104, and is arranged relative to the arrangement of the welded inner support assembly 107. The truss locator 108 on the second support assembly located at the head of the load-bearing structure body is fixed on the left end face of the second support assembly, and the truss locator 108 on the second support assembly located at the tail of the load-bearing structure body is fixed on the right end face of the second support assembly.

[0031] Specifically, in this embodiment, the detachable card plate assembly 104 includes a card plate 201, an adjustable card plate 202, a limit plate 203, a locking pin 204, an adjustable screw 205, and a baffle 206. The card plate 201 and the adjustable card plate 202 are connected and fixed by the locking pin 204 and the nut. The adjustable card plate 202 is installed with the locking pin 204 at a sliding groove. The locking pin 204 slides in the sliding groove. The limit plate 203 is installed in the rectangular groove of the adjustable card plate 202. The adjustable screw 205 screws the baffle 206 to the At the top of the card plate 201, an adjustable screw 205 is screwed to tighten the limit plate 203 located in the rectangular groove. A first semicircular mounting groove is provided on the upper portion of the support card plate 103 and a second semicircular mounting groove is provided on the lower portion of the card plate 201. The first semicircular mounting groove and the second semicircular mounting groove are opposite each other to form a quasi-circular shape. The left and right sides of the lower portion of the card plate 201 are first vertical connecting plates, which are bolted to the second vertical connecting plates on the left and right sides of the support card plate 103. The bottom of the adjustable card plate 202 is curved, and the curvature is the same as the curvature of the second semicircular mounting groove on the card plate 201. The detachable card plate assembly 104 presses the limit plate 203 by tightening the adjustable screw 205, allowing the adjustable card plate 202 to move up and down under the guidance of the locking pin 204.

[0032] Specifically, in this embodiment, the welding inner support fixture assembly 107 includes a limit ring 301, a support ring 302, and a welding truss 303. Several support rings 302 are placed according to the weld seam location. The limit ring 301 is fixed to the support ring 302 via screws, and a certain gap is provided between the limit ring 301 and the support ring 302. Four welding trusses 303 are provided, each corresponding to the center and circumference of the limit ring 301. The welding trusses 303 are fixed to the truss locator 108. The welding truss 303 is T-shaped and is clamped in the fixing groove between the limit ring 301 and the support ring 302. The welding truss 303 is first installed on the truss locator 108, and then four support rings 302 are placed according to the weld seam location. The support rings 302 are adjusted using the screws on the limit ring 301 to cooperate with the detachable clamping plate assembly 104 to control the butt joint gap and step gap to the optimal values required for welding.

[0033] Specifically, in this embodiment, the inner circle of the low-rigidity cylindrical tube in the load-bearing structure body fits with the support ring 302 , and the outer circle of the low-rigidity cylindrical tube fits with the rubber pads attached to the opposite surfaces of the support clamping plate 103 and the detachable clamping plate 104 .

[0034] Working process of the integrated assembly tool for riveting and welding operations of plate beam cylindrical tubes:

[0035] First, the integrated assembly tooling for riveting and welding plate-beam cylindrical tubes is adjusted. A laser tracker is used to measure the target ball position on the reference platform assembly 101. Adjustable anchor assembly 102 is used to adjust the target ball position on the reference platform assembly 101 to the required level. The support plate 103 is decoupled from the removable plate assembly 104. The low-rigidity cylindrical tube is placed on the support plate 103. The removable plate assembly 104 is then screwed to the support plate 103 using latch screws. Latch locators 105 are used to limit the rotational direction and axial position of each low-rigidity cylindrical tube. By tightening the adjustable screw 205 and pressing the limit plate 203, the adjustable plate 202, guided by the locking pin 204, initially controls the roundness of the low-rigidity cylindrical tube. The welded truss 303 is fixed using a truss positioner 108 to control the axial and rotational positions of the welded truss and the low-rigidity cylindrical tube. Four support rings 302 are then installed according to the weld seam position. The support rings 302 are adjusted using the screws on the limit ring 301, and the removable clamp assembly 104 is used to control the butt joint gap and step gap to the optimal values required for welding. After adjusting the step gap and butt joint, spot welding is performed at the weld seam position and the assembly is removed from the frame. The welding external clamping fixture 401 is then assembled to control the deformation of the low-rigidity cylindrical tube during the welding process. The welded assembly is then placed back on the frame, the welding internal support fixture assembly is removed, and the main riveting beam is replaced for riveting. This fixture can accurately and quickly position the low-rigidity cylindrical tube before welding, and avoids the problem of difficult to precisely control the positioning of multiple sections when welding. The welded assembly is then placed back on the fixture to repeat the above positioning and installation operations, ensuring that the single piece before welding and the riveted piece after welding use a unified positioning reference, avoiding the problem of secondary positioning errors caused by switching between the two processes.

[0036] The assembly tooling for riveting and welding plate-beam cylindrical tubes uses latch locators to accurately and quickly position low-rigidity cylindrical tubes, eliminating the difficulty in precisely controlling the positioning of welded multi-section tubes. A single tooling set can simultaneously perform riveting and welding, avoiding secondary positioning errors caused by switching between the two processes. Circular and adjustable clamping plates ensure the coaxiality and roundness of the rotating body, keeping the butt joint gap and step gap of each low-rigidity cylindrical tube at the optimal values for welding, thereby improving weld quality.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assembly tool for riveting plate beam cylindrical tubes, characterized in that: The invention is used in two processes of welding and riveting the load-bearing structure of the cylindrical tube section and the beam of the aircraft, and comprises a reference platform (101), an adjustable foot support (102), a support assembly, and a welding external clamping fixture assembly. The reference platform (101) is used to support the low-rigidity cylindrical tube in the load-bearing structure. The upper part of the reference platform (101) is a first horizontal mounting plate, and the bottom part is a steel support frame connected to the first horizontal mounting plate. The adjustable foot support (102) is installed on the steel support frame. The bottom part of the support assembly is fixed on the first horizontal mounting plate. The support assembly includes a first support assembly and a second support assembly. Support assembly, the first support assembly is used to support the middle part of the load-bearing structure body, the second support structure is used to support the head and tail of the load-bearing structure body, a plurality of the first support assemblies are provided, and they are arranged according to the welding position and welding deformation; the support assemblies are connected by welding internal support assemblies (107), and the welding internal support assembly (107) is used to support and fix the interior of the load-bearing structure body as a whole, and the external clamping fixture (401) in the welding external clamping fixture assembly is fastened with screws to limit the roundness of the low-rigidity cylindrical tube in the load-bearing structure body.

2. The assembly tool for riveting plate beam cylindrical tube according to claim 1, characterized in that: The first support assembly includes a support card (103), a detachable card assembly (104), a latch locator (105), and an outer shape locator (106), wherein the support card (103) is mounted on a reference platform (101), the detachable card (104) is bolted to the upper portion of the support card (103), the latch locator (105) is mounted on the detachable card (104), the outer shape locator (106) is mounted on the detachable card (104), and the outer shape locator (106) is mounted on the detachable card (104). 06) is used for positioning a low-rigidity cylindrical tube; a reinforcement seat is provided at the bottom of the support card plate (103), and the reinforcement seat is locked in an L-shape on the reference platform (101); the reinforcement seat includes a second horizontal mounting plate, a first vertical mounting plate, and a reinforcement plate; the second horizontal mounting plate is locked on the first horizontal mounting plate of the reference platform (101), the first vertical mounting plate is locked with the support card plate (103), and the reinforcement plate connects the first vertical mounting plate with the second horizontal mounting plate.

3. The assembly tool for riveting plate beam cylindrical tube according to claim 2, characterized in that: A rubber pad is pasted on the opposite surface of each supporting card plate (103) and the detachable card plate (104), and the rubber pad is in contact with the surface of the low-rigidity cylindrical tube in the load-bearing structure body, and the shape locator (106) is in contact with the shape of the low-rigidity cylindrical tube of the load-bearing structure body.

4. The assembly tool for riveting plate beam cylindrical tube according to claim 2, characterized in that: The second support assembly has a support card (103), a detachable card assembly (104), a pin locator (105), and an outer shape locator (106) that are the same as the first support assembly in terms of connection method and basic dimensions, and the second support assembly also includes a truss locator (108), the truss locator (108) is screwed to the support card (103) and the detachable card (104) at the front and rear ends, and is arranged relative to the arrangement of the welded inner support assembly (107), the truss locator (108) on the second support assembly at the head of the load-bearing structure body is fixed on the left end face of the second support assembly, and the truss locator (108) on the second support assembly at the tail of the load-bearing structure body is fixed on the right end face of the second support assembly.

5. The assembly tool for riveting plate beam cylindrical tube according to claim 1, characterized in that: The detachable card plate assembly (104) comprises a card plate (201), an adjustable card plate (202), a limit plate (203), a locking pin (204), an adjustable screw (205), and a baffle (206). The card plate (201) and the adjustable card plate (202) are connected and fixed by the locking pin (204) and a nut. The adjustable card plate (202) is provided with a sliding notch where the locking pin (204) is installed. The locking pin (204) slides in the sliding notch. The limit plate (203) is installed in the rectangular groove of the adjustable card plate (202). The adjustable screw (205) screws the baffle (206) into the slot. At the top of the card plate (201), the adjustable screw (205) is screwed to tighten the limit plate (203) located in the rectangular groove, the upper part of the supporting card plate (103) is provided with a first semicircular mounting groove and the lower part of the card plate (201) is provided with a second semicircular mounting groove, the first semicircular mounting groove and the second semicircular mounting groove are opposite to each other to form a quasi-circular shape, the left and right sides of the lower part of the card plate (201) are first vertical connecting plates, which are bolted to the second vertical connecting plates on the left and right sides of the supporting card plate (103), and the bottom of the adjustable card plate (202) is arc-shaped, and the arc is the same as the arc of the second semicircular mounting groove on the card plate (201).

6. The assembly tool for riveting plate beam cylindrical tube according to claim 1, characterized in that: The welding inner support fixture assembly (107) comprises a limiting ring (301), a support ring (302), and a welding truss (303). Several support rings (302) are placed according to the position of the weld. The limiting ring (301) is fixed inside the support ring (302) by screws, and a certain gap is provided between the limiting ring (301) and the support ring (302). Four welding trusses (303) are provided according to the center and circumference of the limiting ring (301). The welding trusses (303) are fixed on the truss positioner (108). The welding truss (303) is T-shaped and is stuck in the fixing groove between the limiting ring (301) and the support ring (302).

7. The assembly tool for riveting plate beam cylindrical tube according to claim 6, characterized in that: The inner circle of the low-rigidity cylindrical tube in the main body of the load-bearing structure is fitted with the support ring (302), and the outer circle of the low-rigidity cylindrical tube is fitted with rubber pads pasted on the opposite surfaces of the support clamping plate (103) and the detachable clamping plate (104).

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