Bent pipe welding clamp capable of meeting different tolerance requirements and using method thereof

Abstract

The invention discloses a bent pipe welding clamp capable of meeting different tolerance requirements and a using method thereof, and belongs to the technical field of welding clamps. The positioning plate, the clamping plate and the surface plate are connected with the base, a positioning frame is arranged at the upper end of the positioning plate, the upper end of the positioning frame is connected with an outer sleeve, and a positioning shaft is inserted in the outer sleeve in a sliding limiting mode. The front end of the positioning shaft is connected with the mounting plate. The upper end of the vertical plate is provided with a first part containing groove, and the upper end face of the vertical plate is fixedly connected with the plane pressing plate in a limiting mode through a locking screw arranged in a kidney-shaped hole of the plane pressing plate. A second part containing groove is formed in the supporting plate perpendicularly fixed to the plane plate. A traditional manual alignment welding mode is replaced, the problem of welding deviation is solved, and the quality and reliability of a welded joint are improved. By adjusting the positioning shafts of different specifications, precise positioning of pipe orifices with different tolerance requirements is achieved, and the problem that multiple sets of tools are needed for auxiliary welding in the prior art is solved.

Description

Technical Field

[0001] The invention relates to a pipe bending welding fixture capable of meeting different tolerance requirements and a use method thereof, belonging to the technical field of welding fixtures. Background Art

[0002] During the installation of aviation parts, welding of elbows and corresponding connectors is a key process. At present, this process mainly adopts manual alignment method for welding. However, there are many shortcomings in manual alignment welding, the most prominent of which is the easy occurrence of welding deviation, which directly affects the quality and reliability of the welded joint. In addition, when encountering pipe mouths with different tolerance requirements, it is necessary to prepare multiple sets of tooling to assist welding, which not only increases the cost and management difficulty of the tooling, but also the operation process is time-consuming and labor-intensive, seriously reducing production efficiency. Therefore, there is an urgent need for a new technology that can accurately and efficiently complete the welding of elbows and connectors to solve the problems existing in the prior art. Summary of the invention

[0003] In order to solve the problems existing in the background technology, the present invention provides a pipe bending welding fixture which can meet different tolerance requirements and a method of using the same.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a bend pipe welding fixture that can meet different tolerance requirements, including a base, a positioning mechanism, a clamping mechanism and a supporting mechanism; the positioning mechanism, the clamping mechanism and the supporting mechanism are cooperatively arranged and fixed on the upper end of the base, the clamping mechanism is used to fix the middle part of the main pipe, the positioning mechanism is used to fix the two ends of the main pipe and the auxiliary parts welded with the main pipe, and the supporting mechanism is used to support the main pipe.

[0005] The positioning mechanism includes a positioning shaft, an outer sleeve, a positioning plate and a positioning frame; the positioning plate is fixedly connected to the upper end of the base, the upper end of the positioning plate is fixed with the positioning frame, the upper end of the positioning frame is fixedly connected to the outer side wall of the horizontally arranged outer sleeve, and the positioning shaft is inserted into the outer sleeve for sliding limiting.

[0006] The rear end surface of the outer sleeve is provided with a radial limit groove along its axial direction, the middle part of the outer sleeve is provided with an axial limit groove 1 along its radial direction, the outer wall of the positioning shaft is fixed with a radial limit block, the radial limit block is slidably inserted in the radial limit groove, the middle part of the outer wall of the positioning shaft is provided with an axial limit groove 2 along its radial direction, the axial limit groove 2 is arranged corresponding to the axial limit groove 1, and the positioning shaft and the outer sleeve are fixedly connected by pins inserted into the axial limit groove 1 and the axial limit groove 2.

[0007] The front end portion of the positioning shaft is fixedly connected to the mounting plate.

[0008] The clamping mechanism includes a vertical plate, a clamping plate and a flat pressure plate; the clamping plate is fixedly connected to the upper end of the base, the upper end of the clamping plate is fixedly connected to the lower end of the vertical plate, the upper end of the vertical plate is provided with a parts placement groove, and the upper end surface of the vertical plate is fixedly connected to the flat pressure plate by a locking screw arranged in the waist-shaped hole of the flat pressure plate.

[0009] The support mechanism comprises a plane plate and a support plate which are vertically welded and fixed, and a second parts placement groove is arranged at the upper end of the support plate.

[0010] Limit bolts are arranged on both sides of the upper end of the support plate.

[0011] A method for using a pipe bending welding fixture that can meet different tolerance requirements of the present invention comprises the following steps:

[0012] S1: Fix the base on the welding workbench;

[0013] S2: Fix the middle part of the main pipe through the parts placement groove 1 of the clamping mechanism and the flat pressure plate;

[0014] S3: Place the two ends of the main pipe on the corresponding supporting mechanisms respectively;

[0015] S4: Position and fix the two ends of the main pipe respectively through corresponding positioning mechanisms;

[0016] S5: After all the auxiliary parts are placed at the corresponding positions of the main pipe, they are positioned and fixed by corresponding positioning mechanisms;

[0017] S6: After the above clamping is completed, the main pipe and the auxiliary parts are welded to obtain a bent pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention replaces the traditional manual alignment welding method, solves the problem of welding deviation, and improves the quality and reliability of the welded joint. At the same time, by adjusting the positioning shafts of different specifications, the precise positioning of the pipes with different tolerance requirements is achieved, solving the problem of needing multiple sets of tooling to assist welding in the past, filling the gap in the industry, improving production efficiency, and reducing tooling costs and management difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the positioning mechanism;

[0022] Figure 3 is a structural schematic diagram of the clamping mechanism;

[0023] Figure 4It is a structural diagram of the supporting mechanism. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] A pipe bending welding fixture that can meet different tolerance requirements includes a base 1, a positioning mechanism 2, a clamping mechanism 3 and a supporting mechanism 15; the positioning mechanism 2, the clamping mechanism 3 and the supporting mechanism 15 are cooperatively arranged and fixed on the upper end of the base 1, the clamping mechanism 3 is used to fix the middle part of the main pipe 7, the positioning mechanism 2 is used to fix the two ends of the main pipe 7 and the auxiliary part 14 welded with the main pipe 7, and the supporting mechanism 15 is used to support the main pipe 7.

[0026] The positioning mechanism 2 includes a positioning shaft 4, an outer sleeve 5, a positioning plate 6 and a positioning frame 8; the positioning plate 6 is fixedly connected to the upper end of the base 1 by bolts, and the upper end of the positioning plate 6 is integrally formed with a T-shaped positioning frame 8, and the upper end of the positioning frame 8 is fixedly connected to the outer side wall of the horizontally arranged outer sleeve 5, and the positioning shaft 4 is inserted into the outer sleeve 5 for sliding limiting.

[0027] The rear end face of the outer sleeve 5 is provided with a radial limit groove 16 along its axial direction, and the middle part of the outer sleeve 5 is provided with an axial limit groove 1 along its radial direction. The outer wall of the positioning shaft 4 is integrally formed with a radial limit block 12, and the radial limit block 12 is slidably inserted in the radial limit groove 16 to achieve radial limitation of the positioning shaft 4; the middle part of the outer wall of the positioning shaft 4 is provided with an axial limit groove 2 along its radial direction, and the axial limit groove 2 is arranged corresponding to the axial limit groove 1. The positioning shaft 4 and the outer sleeve 5 are fixedly connected by inserting a pin 13 into the axial limit groove 1 and the axial limit groove 2 to achieve axial limitation of the positioning shaft 4.

[0028] The front end of the positioning shaft 4 is fixedly connected to the mounting plate 9 via a positioning pin, so as to fix the plate-shaped auxiliary component 14 .

[0029] The clamping mechanism 3 includes a vertical plate 10, a clamping plate 11 and a flat pressure plate 18; the clamping plate 11 is fixedly connected to the upper end of the base 1 by bolts, and the upper end of the clamping plate 11 is fixedly connected to the lower end of the vertical plate 10. A parts placement groove 21 is provided at the upper end of the vertical plate 10, and the upper end surface of the vertical plate 10 is fixedly connected to the flat pressure plate 18 by a locking screw 19 arranged in the waist-shaped hole of the flat pressure plate 18.

[0030] The support mechanism 15 includes a plane plate 24 and a support plate 25 which are vertically welded and fixed. A second parts placement slot 22 is provided at the upper end of the support plate 25. The plane plate 24 is fixedly connected to the upper end of the base 1 by bolts.

[0031] Limit bolts 26 are provided on both sides of the upper end of the support plate 25 for limiting and fixing the main pipe 7 with a flange at the end.

[0032] A method for using a pipe bending welding fixture that can meet different tolerance requirements of the present invention comprises the following steps:

[0033] S1: Fix the base 1 on the welding workbench;

[0034] S2: Fix the middle part of the main pipe 7 through the parts placement groove 21 of the clamping mechanism 3 and the flat pressing plate 18;

[0035] S3: placing the two ends of the main pipe 7 on the corresponding supporting mechanisms 15 respectively;

[0036] S4: Position and fix the two ends of the main pipe 7 through the corresponding positioning mechanisms 2 respectively;

[0037] S5: After all the auxiliary components 14 are placed at the corresponding positions of the main pipe 7, they are positioned and fixed by the corresponding positioning mechanisms 2;

[0038] S6: After the above clamping is completed, the main pipe 7 and the auxiliary part 14 are welded to obtain a bent pipe.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pipe bending welding fixture that can meet different tolerance requirements, characterized by: The invention comprises a base (1), a positioning mechanism (2), a clamping mechanism (3) and a supporting mechanism (15); the positioning mechanism (2), the clamping mechanism (3) and the supporting mechanism (15) are arranged in cooperation and fixed on the upper end of the base (1); the clamping mechanism (3) is used to fix the middle part of the main pipe (7); the positioning mechanism (2) is used to fix the two ends of the main pipe (7) and a sub-component (14) welded to the main pipe (7); and the supporting mechanism (15) is used to support the main pipe (7).

2. The elbow welding fixture that can meet different tolerance requirements according to claim 1 is characterized in that: The positioning mechanism (2) comprises a positioning shaft (4), an outer sleeve (5), a positioning plate (6) and a positioning frame (8); the positioning plate (6) is fixedly connected to the upper end of the base (1); the upper end of the positioning plate (6) is fixedly connected to the outer side wall of the horizontally arranged outer sleeve (5); and the positioning shaft (4) is inserted into the outer sleeve (5) in a sliding and limiting manner.

3. The elbow welding fixture capable of meeting different tolerance requirements according to claim 2, characterized in that: The rear end surface of the outer sleeve (5) is provided with a radial limit groove (16) along its axial direction, and the middle part of the outer sleeve (5) is provided with an axial limit groove 1 along its radial direction. The outer wall of the positioning shaft (4) is fixed with a radial limit block (12), and the radial limit block (12) is slidably inserted in the radial limit groove (16). The middle part of the outer wall of the positioning shaft (4) is provided with an axial limit groove 2 along its radial direction, and the axial limit groove 2 is arranged corresponding to the axial limit groove 1. The positioning shaft (4) and the outer sleeve (5) are fixedly connected by a pin (13) inserted into the axial limit groove 1 and the axial limit groove 2.

4. A pipe bending welding fixture capable of meeting different tolerance requirements according to claim 2 or 3, characterized in that: The front end of the positioning shaft (4) is fixedly connected to the mounting plate (9).

5. The elbow welding fixture capable of meeting different tolerance requirements according to claim 1, characterized in that: The clamping mechanism (3) comprises a vertical plate (10), a clamping plate (11) and a flat pressure plate (18); the clamping plate (11) is fixedly connected to the upper end of the base (1), the upper end of the clamping plate (11) is fixedly connected to the lower end of the vertical plate (10), the upper end of the vertical plate (10) is provided with a parts placement groove (21), and the upper end surface of the vertical plate (10) is fixedly connected to the flat pressure plate (18) by a locking screw (19) arranged in a waist-shaped hole of the flat pressure plate (18).

6. The pipe bending welding fixture capable of meeting different tolerance requirements according to claim 1, characterized in that: The support mechanism (15) comprises a plane plate (24) and a support plate (25) which are vertically welded and fixed, and a second part placement groove (22) is provided at the upper end of the support plate (25).

7. The elbow welding fixture capable of meeting different tolerance requirements according to claim 6, characterized in that: Limit bolts (26) are provided on both sides of the upper end of the support plate (25).

8. A method for using the pipe bending welding fixture that can meet different tolerance requirements according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: S1: Fix the base (1) on the welding workbench; S2: Fixing the middle part of the main pipe (7) by means of the part placement groove (21) of the clamping mechanism (3) and the flat pressing plate (18); S3: placing the two ends of the main pipe (7) on corresponding support mechanisms (15); S4: Positioning and fixing the two ends of the main pipe (7) respectively by corresponding positioning mechanisms (2); S5: After all the auxiliary components (14) are placed at corresponding positions of the main pipe (7), they are positioned and fixed by corresponding positioning mechanisms (2); S6: After the above clamping is completed, the main pipe (7) and the auxiliary part (14) are welded to obtain a bent pipe.

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