Welding tool special for shell

Abstract

The utility model discloses a welding tool special for a shell, relates to the technical field of shell machining, and can solve the problems that in the prior art, an existing manufacturing process is inconvenient, the welding efficiency is low, the percent of pass is low, and the input human resource cost is high. A plurality of special welding tools are installed on the outer wall of the shell, the convex lugs can be completely attached to the shell flatly, then welding work is carried out, the multiple welding tools installed on the outer wall of the shell are distributed in a circumferential array mode, and the included angles between every two welding tools are the same in degree. By means of the installation mode, the convex lugs can be stably attached to the outer wall of the shell in a flat mode, force borne by all parts of the outer wall of the shell can be dispersed through the uniform installation mode, it is guaranteed that welding openings of the convex lugs are not prone to falling off during welding work, then the welding period is shortened, and the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shell processing, in particular to a special welding tool for shells. Background Art

[0002] As a mechanical mounting component, the housing is widely used in aerospace and other fields. The lugs installed on the housing are very complex, requiring high positioning accuracy and a large manufacturing workload. In order to save costs, the lugs and housings are mostly manufactured using welding technology in the prior art.

[0003] During the manufacturing process, conventional welding technology often uses the method of marking the installation position of the lug on the shell, and then using personnel to assist in welding. At least two assistants are required in this process to make the lug flush with the marked part of the shell. The welders then perform spot welding to fix it. After fixation, the part is sent to the inspector to check whether the welding position is qualified. If not, the lug welding point can only be ground off, and the above welding process must be repeated and re-welded. The disadvantages of this welding process are low welding efficiency, low pass rate, and high human resource cost, so it is no longer suitable for mass production.

[0004] Therefore, in view of the inconvenience of the existing manufacturing process, low welding efficiency, low qualification rate, and high human resource cost, a special shell welding tool is needed to solve the above problems. Utility Model Content

[0005] In order to solve the problems of inconvenient existing manufacturing processes, low welding efficiency, low pass rate and high human resource cost in the prior art, the present application provides a special welding tool for the shell. When installing the shell lugs, multiple special welding toolings are installed on the outer wall of the shell so that the lugs can be completely flush with the shell, and then welding work can be performed, thereby avoiding the low welding efficiency and low pass rate of the existing process, which leads to extended construction period and additional economic costs.

[0006] In order to achieve the above purpose, the technical solution adopted in this application is:

[0007] A special welding tool for a shell, comprising a shell and a lug placed on an operating table, and at least four welding tools detachably connected to the outer wall of the shell, wherein the lug is arranged in a positioning groove provided in the welding tool, a positioning pin hole is provided at the upper end of the welding tool, a limiting groove is provided on the upper end surface of the shell corresponding to the positioning pin hole and directly below the positioning pin hole, and positioning pins for clamping the welding tool and the shell are provided in the positioning pin hole and the limiting groove;

[0008] The welding fixture is also provided with a locking hole, a first mounting hole, and a second mounting hole. The locking holes are respectively provided in bosses extending into the inner cavity of the shell at the upper and lower ends of the welding fixture. The locking holes are provided with locking screws for clamping the welding fixture and the shell.

[0009] A first locking device and a second locking device for making the lug flush against the outer wall of the shell are detachably connected to the first mounting hole and the second mounting hole, respectively.

[0010] As a further improvement of the present invention, the plurality of welding tools disposed outside the shell are distributed in a circular array, and the angles between every two welding tools are the same.

[0011] As a further improvement of the present invention, a groove is formed inside the welding tool through bosses extending from the upper and lower ends, and the upper and lower end surfaces of the shell both abut against the inside of the groove.

[0012] As a further improvement of the present invention, the locking hole is opened obliquely toward the inner wall surface of the shell, and the bottoms of the two locking screws both rest against the inner wall of the shell.

[0013] As a further improvement of the present invention, the first locking device is installed in the first mounting hole by means of bolt connection, and the first mounting hole and the positioning groove are arranged opposite to each other, both are opened inside the welding tooling and are perpendicular to the outer wall of the shell.

[0014] As a further improvement of the present invention, the first locking device includes a first locking seat, a first fastening screw group and a first locking block. The first locking seat is screwed into the first mounting hole through the first fastening screw group, and the first locking block is clamped between the first locking seat and the lug, so that the two end faces of the first locking block respectively conflict with the corresponding end faces of the first locking seat and the lug.

[0015] As a further improvement of the present invention, the second locking device is installed in the second mounting hole by bolt connection, and the second mounting hole is perpendicular to the bottom end surface of the lug and is opened at the bottom position of the welding tool.

[0016] As a further improvement of the present invention, the second locking device includes a second locking seat, a fixing block, a fastening screw column, a second locking block and a second fastening screw group, the second locking seat is screwed into the second mounting hole through the second fastening screw group, the fixing block is installed on the second locking seat, a fixing groove for clamping the fastening screw column is opened on the fixing block, the column body of the fastening screw column is clamped in the fixing groove, and the column head of the fastening screw column contacts the bottom surface of the lug.

[0017] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0018] 1. In the present application, when installing the shell lugs, multiple special welding tools are used to install them on the outer wall of the shell so that the lugs can be completely flush with the shell, and then welding is performed to avoid the low welding efficiency and low pass rate of the existing process, which leads to extended construction period and additional economic costs.

[0019] 2. In the present application, the multiple welding tools installed on the outer wall of the shell are distributed in a circular array, and the angles between every two welding tools are the same. This installation method can smoothly attach the lug to the outer wall of the shell, and the uniform installation method can also disperse the force borne by various parts of the outer wall of the shell, ensuring that the welding joints of the lugs will not fall off easily during welding, thereby shortening the welding cycle and speeding up the welding efficiency.

[0020] 3. In the present application, the lug is arranged in a positioning groove provided in the welding tooling, and the lug is firmly fixed by the cooperation of the first locking device and the second locking device, wherein the first locking device and the second locking device are arranged at a vertical angle, so that the lug can be fastened in the positioning groove, so that the lug can be completely flush with the shell, thereby ensuring the smooth progress of subsequent welding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 It is an axonometric drawing of the utility model.

[0023] Figure 2 It is the front view of the utility model.

[0024] Figure 3 It is a left view of the utility model.

[0025] Figure 4 yes Figure 2 Section view along the cutting symbol AA.

[0026] Figure 5 yes Figure 4 A partial enlarged view of area A in the middle.

[0027] Figure 6 It is a top view of the utility model.

[0028] Figure 7 It is an axonometric view of the welding tool in the utility model.

[0029] Figure 8 It is the front view of the welding tool in the utility model.

[0030] In the figure: 1. shell; 2. lug; 3. welding tool; 4. positioning pin; 5. first locking device; 51. first locking seat; 52. first fastening screw group; 53. first locking block; 6. second locking device; 61. second locking seat; 62. fixing block; 63. fastening screw column; 64. second locking block; 65. second fastening screw group; 7. locking screw; 8. positioning pin hole; 9. locking hole; 10. first mounting hole; 11. second mounting hole; 12. positioning groove. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Example:

[0038] In conjunction with the instruction manual Figure 1-Figure 8 A special welding tool 3 for a shell 1 is shown, comprising a shell 1 and a lug 2 placed on an operating table, and also comprising at least four welding tools 3 detachably connected to the outer wall of the shell 1, wherein the lug 2 is arranged in a positioning groove 12 provided in the welding tool 3, a positioning pin hole 8 is provided at the upper end of the welding tool, and a limiting groove is provided on the upper end surface of the shell 1 corresponding to and directly below the positioning pin hole 8, and a positioning pin 4 for clamping the welding tool 3 and the shell 1 is provided in the positioning pin hole 8 and the limiting groove;

[0039] The welding fixture 3 is also provided with a locking hole 9, a first mounting hole 10 and a second mounting hole 11. The locking holes 9 are respectively provided in bosses extending into the inner cavity of the shell 1 at the upper and lower ends of the welding fixture 3. The locking screws 7 for clamping the welding fixture 3 and the shell 1 are provided inside the locking holes 9.

[0040] A first locking device 5 and a second locking device 6 for attaching the lug 2 to the outer wall of the housing 1 are detachably connected to the first mounting hole 10 and the second mounting hole 11 , respectively.

[0041] It is worth noting that the welding jig 3 described in this embodiment is a jig specially used for fixing a certain type of workpiece, and the welding jig 3 can be manufactured separately according to the actual size of the specific workpiece to be fixed. In the above structure, the multiple jigs connected to the shell 1 are of a unified model, and the positioning groove 12 provided on the welding jig 3 is consistent with the shape of the protrusion of the lug 2, which can conveniently and securely fix the lug 2. The connection operation between the welding jig 3 and the shell 1 is completed on the operating table, which can ensure the safety of the surrounding operators and avoid falling or slipping out of the hands.

[0042] Specifically, the lug 2 is arranged in the positioning groove 12 provided in the welding tool 3, and the lug 2 is firmly fixed by the cooperation of the first locking device 5 and the second locking device 6, wherein the first locking device 5 and the second locking device 6 are arranged at a vertical angle, so that the lug 2 can be fastened in the positioning groove 12, so that the lug 2 can be completely flush with the shell 1, thereby ensuring the smooth progress of subsequent welding work. Among them, the existing welding process takes 120 minutes to weld one piece each time, with a one-time pass rate of 70%, and at least 3 people are required to complete the welding process. The welding tool 3 takes 20 minutes to weld one piece each time, with a one-time pass rate of 98%, and only 1 person is required to complete the welding process, which greatly saves labor costs and shortens the welding cycle.

[0043] It is further worth mentioning that when the lug 2 of the shell 1 is installed, multiple special welding tools 3 are installed on the outer wall of the shell 1 so that the lug 2 can be completely flush with the shell 1, and then welding is performed, avoiding the low welding efficiency and low pass rate of the existing process, which leads to extended construction period and additional economic costs.

[0044] In order to ensure that the lug 2 is flat against the outer wall of the shell 1 and the welding work can proceed smoothly, the multiple welding tools 3 arranged outside the shell 1 are distributed in a circular array, and the angles between every two welding tools 3 are the same. The inside of the welding tool 3 is formed with a groove through the bosses extending from the upper and lower ends, and the upper and lower end surfaces of the shell 1 are both against the inside of the groove.

[0045] It is to be noted that the existing welding process often adopts the method of marking the installation position of the lug 2 on the shell 1, and then assisting the welding with personnel. In this process, at least two assistants are required, and the human resource cost is high. It is not suitable for batch or large-scale welding manufacturing. However, arranging the above-mentioned multiple welding tools 3 at the same angle can enable a single operator to make the lug 2 flat on the outer wall of the shell 1, thereby ensuring the smooth progress of subsequent work.

[0046] Specifically, the multiple welding tools 3 installed on the outer wall of the shell 1 are distributed in a circular array, and the angles between every two welding tools 3 are the same. This installation method can smoothly attach the lug 2 to the outer wall of the shell 1, and the uniform installation method can also disperse the force borne by various parts of the outer wall of the shell 1, ensuring that the welding joints of the lug 2 will not fall off easily during welding, thereby shortening the welding cycle and accelerating the welding efficiency.

[0047] Combined with the accompanying drawings Figure 4 The locking hole 9 is opened obliquely toward the inner wall of the shell 1 , and the bottoms of the two locking screws 7 are both against the inner wall of the shell 1 .

[0048] It is explained that the locking hole 9 in the welding tool 3 is opened at an angle with the hole opening facing the inner wall of the shell 1, in order to cooperate with the installation of the locking screw 7, so that the locking screws 7 at the upper and lower ends can contact the inner wall of the shell 1 through the bottom after installation, thereby making the welding tool 3 firmly stuck on the shell 1.

[0049] Combined with the accompanying drawings Figure 1-Figure 8 The first locking device 5 is installed in the first mounting hole 10 by bolt connection. The opening positions of the first mounting hole 10 and the positioning groove 12 are arranged opposite to each other, both are opened inside the welding tool 3, and are perpendicular to the outer wall of the shell 1. The first locking device 5 includes a first locking seat 51, a first fastening screw group 52 and a first locking block 53. The first locking seat 51 is screwed in the first mounting hole 10 through the first fastening screw group 52. The first locking block 53 is clamped between the first locking seat 51 and the lug 2, so that the two end faces of the first locking block 53 respectively conflict with the corresponding end faces of the first locking seat 51 and the lug 2.

[0050] It is explained that the lug 2 is clamped in the positioning groove 12 and is tightened in the horizontal direction by the first locking device 5. The first locking block 53 in the first locking device 5 can cooperate with the first locking seat 51 to make the lug 2 flat on the outer wall of the shell 1, and the first fastening screw group 52 in the first locking device 5 can adjust the degree of tightening of the lug 2 according to actual needs. The above structure can also facilitate the operator to disassemble after the welding work is completed, shorten the preparation period for the next welding work, and thus improve work efficiency.

[0051] Combined with the accompanying drawings Figure 1-Figure 8 The second locking device 6 is installed in the second mounting hole 11 by bolt connection. The second mounting hole 11 is perpendicular to the bottom end surface of the lug 2 and is opened at the bottom position of the welding tool 3. The second locking device 6 includes a second locking seat 61, a fixing block 62, a fastening screw column 63, a second locking block 64 and a second fastening screw group 65. The second locking seat 61 is screwed into the second mounting hole 11 through the second fastening screw group 65. The fixing block 62 is installed on the second locking seat 61. A fixing groove for clamping the fastening screw column 63 is opened on the fixing block 62. The column body of the fastening screw column 63 is clamped in the fixing groove, and the column head of the fastening screw column 63 contacts the bottom surface of the lug 2.

[0052] It is explained that the cooperation of the second locking seat 61, the fixing block 62 and the fastening screw column 63 in the second locking device 6 can enable the second locking block 64 to press the lug 2 from the vertical direction, ensuring that the lug 2 is in a vertically flush state with the outer wall of the shell 1, and through the second fastening screw group 65 in the second locking device 6, the degree of pressing on the lug 2 can be adjusted according to actual needs. The above structure can also facilitate disassembly by the operator after the welding work is completed, shortening the preparation period for the next welding work, thereby improving work efficiency.

[0053] Brief description of working steps:

[0054] In this embodiment, the shell 1 is first placed flat on the operating table, and then the lug 2 is placed on the outer wall of the shell 1, and then a plurality of welding jigs 3 are taken out, and the shell 1, the lug 2 and the welding jig 3 are clamped and fixed, wherein the lug 2 is placed in the positioning groove 12, and then the positioning pin 4 is inserted into the positioning pin hole 8 and the limit groove, and the upper and lower ends of the welding jig 3 and the shell 1 are aligned at the same time, and the locking screw 7 is installed in the locking hole 9 opened in the upper and lower end bosses of the welding jig 3, so that the welding jig 3 is firmly clamped on the shell 1, and then, after observing whether there is a gap between the lug 2 and the shell 1, the next step is taken, the first locking device 5 is tightened to press the lug 2 in the horizontal direction, and then the second locking device 6 is tightened to press the lug 2 in the vertical direction, and the above steps are repeated to install the remaining plurality of welding jigs 3 on the shell 1 in turn, so that the lug 2 is completely flush with the shell 1, and then the final welding work is carried out.

[0055] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A special welding tool for a shell, comprising a shell (1) and a lug (2) placed on an operating table, characterized in that: It also comprises at least four welding fixtures (3) detachably connected to the outer wall of the shell (1), the lugs (2) being arranged in positioning grooves (12) provided in the welding fixtures (3), a positioning pin hole (8) being provided at the upper end of the welding fixture (3), a limiting groove being provided on the upper end surface of the shell (1) corresponding to and directly below the positioning pin hole (8), and positioning pins (4) for clamping the welding fixture (3) and the shell (1) being provided in the positioning pin hole (8) and the limiting groove; The welding fixture (3) is also provided with a locking hole (9), a first mounting hole (10) and a second mounting hole (11); the locking holes (9) are respectively provided in bosses extending into the inner cavity of the shell (1) at the upper and lower ends of the welding fixture (3); and locking screws (7) for clamping the welding fixture (3) and the shell (1) are provided inside the locking holes (9); A first locking device (5) and a second locking device (6) for making the lug (2) flush against the outer wall of the housing (1) are detachably connected in the first mounting hole (10) and the second mounting hole (11), respectively.

2. A shell-specific welding tool according to claim 1, characterized in that: The plurality of welding tools (3) arranged outside the shell (1) are distributed in a circular array, and the angles between every two welding tools (3) are the same.

3. A shell-specific welding tool according to claim 2, characterized in that: The inside of the welding tool (3) is formed with a slot through bosses extending from the upper and lower ends, and the upper and lower end surfaces of the shell (1) both abut against the inside of the slot.

4. The shell-specific welding tool according to claim 3, characterized in that: The locking hole (9) is opened obliquely toward the inner wall surface of the shell (1), and the bottoms of the two locking screws (7) both abut against the inner wall of the shell (1).

5. The shell-specific welding tool according to claim 1, characterized in that: The first locking device (5) is installed in the first mounting hole (10) by means of bolt connection, and the first mounting hole (10) and the positioning groove (12) are arranged at opposite positions, are both opened inside the welding tool (3), and are perpendicular to the outer wall of the shell (1).

6. The shell-specific welding tool according to claim 5, characterized in that: The first locking device (5) comprises a first locking seat (51), a first fastening screw group (52) and a first locking block (53); the first locking seat (51) is screwed into the first mounting hole (10) through the first fastening screw group (52); the first locking block (53) is clamped between the first locking seat (51) and the lug (2), so that the two end surfaces of the first locking block (53) respectively contact with the corresponding end surfaces of the first locking seat (51) and the lug (2).

7. The shell-specific welding tool according to claim 1, characterized in that: The second locking device (6) is installed in the second mounting hole (11) by means of bolt connection, and the second mounting hole (11) is opened at the bottom of the welding tool (3) perpendicular to the bottom end surface of the lug (2).

8. The shell-specific welding tool according to claim 7, characterized in that: The second locking device (6) comprises a second locking seat (61), a fixing block (62), a fastening screw column (63), a second locking block (64) and a second fastening screw group (65); the second locking seat (61) is screwed into the second mounting hole (11) via the second fastening screw group (65); the fixing block (62) is mounted on the second locking seat (61); a fixing groove for clamping the fastening screw column (63) is provided on the fixing block (62); the column body of the fastening screw column (63) is clamped in the fixing groove; the column head of the fastening screw column (63) contacts the bottom surface of the lug (2).

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