Welding gun position adjusting system for assembling and welding integrated machining of transmission shaft assembly

Abstract

The utility model belongs to the technical field of automobile transmission shafts, and relates to a welding gun position adjusting system for assembling and welding integrated machining of a transmission shaft assembly, which comprises a rack, a front seat, a tail seat, a welding gun and a truss, the first position signal detection device and the second position signal detection device are arranged on the front tool disc and the rear tool disc respectively to detect the distance between the front end and the rear end of the transmission shaft assembly, the servo motor controls the position of the welding gun on the transmission shaft assembly, and therefore accurate, efficient and high-quality welding of the transmission shaft assembly is achieved. The problem that a transmission shaft assembly welding seam and a welding seam pool are not aligned under the condition that the position of a welding gun is manually adjusted in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile transmission shafts and relates to a welding gun position adjustment system for integrated assembly and welding of a transmission shaft assembly. Background Art

[0002] The transmission shaft is a component that transmits power between the automobile gearbox and the drive axle. The transmission shaft is usually composed of a shaft body in the middle and universal joints at both ends. When the transmission shaft assembly is assembled and welded in one piece in the prior art, the universal joints at both ends of the transmission shaft need to be fixed at a certain spacing and then the shaft body in the middle needs to be butt-welded to ensure that the length of the transmission shaft and the angle of the universal joint meet the actual accuracy requirements.

[0003] However, the existing integrated assembly and welding processing method of the transmission shaft assembly requires manual adjustment of the welding gun position after the universal joints at both ends are assembled. There are errors caused by manual adjustment of the welding gun position, which in turn causes the transmission shaft assembly welding weld and the weld pool to be misaligned.

[0004] Therefore, a more accurate, high-quality and efficient welding gun position adjustment device is needed to solve this technical problem. Utility Model Content

[0005] The technical solution adopted by the utility model to solve the technical problem is: a welding gun position adjustment system for integrated welding of a transmission shaft assembly, comprising: a frame, a front seat, a tail seat, a welding gun, and a truss. The upper table surface of the frame is provided with a slide rail in the horizontal direction. The front seat and the tail seat are slidably connected to the slide rail respectively. The front seat and the tail seat can slide back and forth along the slide rail respectively. The front seat and the tail seat are respectively provided with a front tooling disk and a rear tooling disk. The mounting surfaces of the front tooling disk and the rear tooling disk are arranged opposite to each other. The front tooling disk and the rear tooling disk are respectively used for detachably connecting the universal couplings at both ends of the transmission shaft assembly; the truss is arranged above the frame, and a welding gun is horizontally slidably connected to the truss. At least one end of the truss is provided with a motor, and the motor is used to drive the welding gun to slide back and forth horizontally along the truss, and the welding part of the welding gun faces the transmission shaft assembly downward; the front tooling disk and the rear tooling disk are respectively provided with a first position signal detection device and a second position signal detection device; the frame is provided with a control box, and the first position signal detection device, the second The position signal detection device and the motor are electrically connected to the control box respectively; when the transmission shaft assembly is being assembled and welded, the universal couplings at both ends of the transmission shaft assembly are respectively bolted and fixed by the front tooling disk on the front seat and the rear tooling disk on the tail seat, and the distance between the two universal couplings is detected by the first position signal detection device and the second position signal detection device. When the distance meets the length required by the design, the relative positions of the front seat and the tail seat on the slide rail are locked, thereby accurately controlling the length of the transmission shaft; after the positions of both ends of the transmission shaft assembly are determined, the first position signal detection device and the second position signal detection device feed back the position information to the control box, and then the control box controls the motor to rotate, and moves the welding gun horizontally to the middle of the transmission shaft assembly at the feedback position for welding, thereby avoiding the misalignment between the welding weld and the weld pool of the transmission shaft assembly caused by the existing manual adjustment of the welding gun position. After welding is completed, accurate, efficient and high-quality transmission shaft assembly welding is finally achieved.

[0006] Preferably, a welding controller is provided on the frame, and the welding controller is electrically connected to the control box and the welding gun respectively; the welding controller is used to control the switch and size of the current and voltage of the welding gun, so as to control the start and stop and power of the welding gun after receiving instructions from the control box.

[0007] Preferably, the frame is provided with a welding module, which is electrically connected to the welding gun and the welding controller respectively; the welding module is used to output the converted electrical energy to the welding gun, and the welding module is placed on the frame and separated from the welding gun, so that the weight and size of the welding gun are smaller, and the position can be moved more accurately under the drive of the motor, and more complex welding actions can be performed in a smaller space to meet higher transmission shaft assembly welding requirements.

[0008] Preferably, the motor is a servo motor; the servo motor has better controllability and control accuracy.

[0009] Preferably, a protective cover is provided on the frame; the protective cover is used to cover the entire welding and adjustment system to prevent external influences on welding, and prevent the exhaust gas and harmful light radiation generated during welding from escaping.

[0010] Preferably, the slide rails include: dovetail rails and ladder rails; dovetail rails and ladder rails have better load-bearing capacity and better vertical position accuracy.

[0011] Preferably, a pad is provided between the upper surface of the frame and the bottom of the transmission shaft assembly; the pad is used when the transmission shaft assembly is long and only the two ends are fixed, so that it is easy to support when a large deflection occurs after the middle part of the transmission shaft assembly is subjected to force, thereby ensuring the axial stiffness of the transmission shaft assembly during welding.

[0012] Preferably, the welding gun is provided with a third position signal detection device, and the third position signal detection device is electrically connected to the control box; the third position signal detection device cooperates with the first position signal detection device and the second position signal detection device to more accurately detect the welding position of the welding gun in real time and make real-time adjustments to meet the different welding requirements of different models of drive shaft assemblies.

[0013] Preferably, there are two slide rails, which are parallel to each other; the two slide rails have better supporting stability.

[0014] Preferably, the front tooling disk is rotatably connected to the front seat, and the rear tooling disk is rotatably connected to the tail seat, and the rotating axis of the front tooling disk is colinear with the rotating axis of the rear tooling disk; the front tooling disk and the rear tooling disk on the same straight line make the installation of the transmission shaft assembly more convenient and reliable, and the welding accuracy is higher.

[0015] The beneficial effects of the utility model are:

[0016] The utility model realizes accurate, efficient and high-quality welding of the transmission shaft assembly by respectively arranging a first position signal detection device and a second position signal detection device on the front tooling disk and the rear tooling disk to detect the distance between the front and rear ends of the transmission shaft assembly, and then controlling the position of the welding gun on the transmission shaft assembly through a servo motor; and solves the problem of misalignment between the welding seam and the weld pool of the transmission shaft assembly caused by manually adjusting the position of the welding gun in the existing situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a welding gun position adjustment system for a transmission shaft assembly for integrated welding processing;

[0018] Figure 2 It is a control flow chart.

[0019] In the figure, 1, frame; 2, front seat; 3, tail seat; 4, welding gun; 5, truss; 6, slide rail; 7, front tooling plate; 8, rear tooling plate; 9, transmission shaft assembly; 10, universal joint; 11, motor; 12, first position signal detection device; 13, second position signal detection device; 14, control box; 15, welding controller; 16, welding module; 17, protective cover; 18, pad; 19, third position signal detection device. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the relevant technologies in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] refer to Figures 1-2The utility model provides a welding gun position adjustment system for integrated assembly and welding of a transmission shaft, comprising: a frame 1, a front seat 2, a tail seat 3, a welding gun 4, and a truss 5. The upper table of the frame 1 is provided with a slide rail 6 in the horizontal direction. The front seat 2 and the tail seat 3 are respectively slidably connected to the slide rail 6. The front seat 2 and the tail seat 3 can respectively slide back and forth along the slide rail 6. The front seat 2 and the tail seat 3 are respectively provided with a front tooling plate 7 and a rear tooling plate 8. The mounting surfaces of the front tooling plate 7 and the rear tooling plate 8 are arranged opposite to each other. The front tooling plate 7 and the rear tooling plate 8 are respectively used for detachable The universal coupling 10 connecting the two ends of the transmission shaft assembly 9 is removed; the truss 5 is arranged above the frame 1, and the welding gun 4 is horizontally slidably connected to the truss 5. At least one end of the truss 5 is provided with a motor 11, and the motor 11 is used to drive the welding gun 4 to slide horizontally reciprocatingly along the truss 5, and the welding part of the welding gun 4 is downwardly facing the transmission shaft assembly 9; the front tooling plate 7 and the rear tooling plate 8 are respectively provided with a first position signal detection device 12 and a second position signal detection device 13; the frame 1 is provided with a control box 14, the first position signal detection device 12, the second The position signal detection device 13 and the motor 11 are electrically connected to the control box 14 respectively; when the transmission shaft assembly is welded, the universal couplings 10 at both ends of the transmission shaft assembly 9 are bolted and fixedly connected by the front tooling disk 7 on the front seat 2 and the rear tooling disk 8 on the tail seat 3, and the distance between the two universal couplings 10 is detected by the first position signal detection device 12 and the second position signal detection device 13. When the distance meets the design length, the relative position of the front seat 2 and the tail seat 3 on the slide rail 6 is locked, so as to accurately control the length of the transmission shaft; after the positions of the two ends of the transmission shaft assembly 9 are determined, the first position signal detection device 12 and the second position signal detection device 13 feed back the position information to the control box 14, and then the control box 14 controls the motor 11 to rotate, and moves the welding gun 4 horizontally to the middle of the transmission shaft assembly 9 at the feedback position for welding, thereby avoiding the misalignment of the transmission shaft assembly welding weld and the weld pool caused by the existing manual adjustment of the welding gun position. After welding is completed, accurate, efficient and high-quality transmission shaft assembly welding is finally achieved.

[0022] Furthermore, a welding controller 15 is provided on the frame 1, and the welding controller 15 is electrically connected to the control box 14 and the welding gun 4 respectively; the welding controller 15 is used to control the switch and size of the current and voltage of the welding gun 4, so as to control the start and stop and power of the welding gun 4 after receiving the instructions of the control box 14.

[0023] Furthermore, the frame 1 is provided with a welding module 16, which is electrically connected to the welding gun 4 and the welding controller 15 respectively; the welding module 16 is used to output the converted electrical energy to the welding gun 4, and the welding module 16 is placed on the frame 1 and separated from the welding gun 4, so that the weight and size of the welding gun 4 are smaller, and it can be moved more accurately under the drive of the motor 11, and more complex welding actions can be performed in a smaller space to meet higher welding requirements of the transmission shaft assembly 9.

[0024] Furthermore, the motor 11 is a servo motor; the servo motor has better controllability and control accuracy.

[0025] Furthermore, a protective cover 17 is provided on the frame 1; the protective cover 17 is used to cover the entire welding and adjustment system to prevent the influence of the outside world on the welding, and prevent the exhaust gas and harmful light radiation generated during welding from escaping.

[0026] Furthermore, the slide rail 6 includes: a dovetail rail and a ladder rail; the dovetail rail and the ladder rail have better bearing capacity and better vertical position accuracy.

[0027] Furthermore, a pad 18 is provided between the upper surface of the frame 1 and the bottom of the transmission shaft assembly 9; the pad 18 is used when the transmission shaft assembly 9 is long and only the two ends are fixed, so that it is easy to support when a large deflection occurs after the middle part of the transmission shaft assembly 9 is subjected to force, thereby ensuring the axial stiffness of the transmission shaft assembly 9 during welding.

[0028] Furthermore, the welding gun 4 is provided with a third position signal detection device 19, and the third position signal detection device 19 is electrically connected to the control box 14; the third position signal detection device 19 cooperates with the first position signal detection device 12 and the second position signal detection device 13 to more accurately detect the welding position of the welding gun 4 in real time and make real-time adjustments to meet the different welding requirements of different models of drive shaft assemblies 9.

[0029] Furthermore, the slide rails 6 are provided with two, and the slide rails 6 are parallel to each other; the two slide rails 6 have better supporting stability.

[0030] Furthermore, the front tooling disc 7 is rotatably connected to the front seat 2, and the rear tooling disc 8 is rotatably connected to the tail seat 3, and the rotating axis of the front tooling disc 7 and the rotating axis of the rear tooling disc 8 are collinear; the front tooling disc 7 and the rear tooling disc 8 on the same straight line make the installation of the transmission shaft assembly 9 more convenient and reliable, and the welding accuracy is higher.

[0031] Example

[0032] This embodiment uses online detection means to detect the length of the drive shaft assembly 9, and controls the welding gun 4 to move axially to just above the middle of the weld pool according to the length distance, thereby reducing the error caused by manual operation to avoid affecting the alignment of the welding gun and the weld pool, thereby affecting the weld strength.

[0033] In this embodiment, a signal detection controller device is added to the assembly and welding equipment of the transmission shaft assembly 9, and a servo motor 11 is added to the welding module, and the welding 4 can be controlled to move along the axial distance through the welding control box 14 and the welding controller 15. After the assembly of the transmission shaft assembly 9 is completed, the length detection of the transmission shaft assembly 9 before welding is completed by using the detection device installed on the tooling discs at both ends using online detection means, and the detection data is read and saved. At the same time, the total length of the transmission shaft assembly 9 and the distance between the weld pool and the tooling discs at both ends (hereinafter referred to as the weld distance) are transmitted in advance. After the length detection and storage of the transmission shaft assembly 9 is performed in this embodiment, it is coordinated with the weld distance data to systematically determine whether the length of the transmission shaft assembly 9 is qualified. If the length of the transmission shaft assembly 9 is unqualified, the alarm function is activated for timely identification by the operator; if the length of the transmission shaft assembly 9 is qualified, the operation is completed, and after the operation is completed, the signal is transmitted to the welding module 16 and the welding controller 15. The welding controller 15 moves the welding gun 4 axially to the top of the middle of the weld pool through the servo motor 11, and then feeds back the "weld alignment" signal to the welding system. After the welding system obtains the "weld alignment" signal, the transmission shaft assembly 9 welding operation is performed according to the normal welding process. After the present embodiment is put into production, the position of the welding gun 4 is controlled by the acquisition of the length signal of the transmission shaft assembly 9 and the data signal such as the predetermined weld distance, and then the welding gun 4 is controlled to move axially to the top of the middle of the weld pool, thereby reducing the error caused by manual operation and avoiding the influence of the neutrality of the weld and the weld pool on welding and the influence of the weld strength.

[0034] In summary, the utility model respectively provides a first position signal detection device and a second position signal detection device on the front tooling disk and the rear tooling disk to detect the distance between the front and rear ends of the transmission shaft assembly, and then controls the position of the welding gun on the transmission shaft assembly through a servo motor, thereby achieving accurate, efficient and high-quality welding of the transmission shaft assembly; solves the problem of misalignment between the welding weld and the weld pool of the transmission shaft assembly caused by the existing manual adjustment of the welding gun position. Therefore, the utility model has broad application prospects.

[0035] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A welding gun position adjustment system for integrated assembly and welding of a transmission shaft, characterized in that: include: A frame (1), a front seat (2), a tail seat (3), a welding gun (4), and a truss (5); a slide rail (6) is arranged on the upper surface of the frame (1) in the horizontal direction; the front seat (2) and the tail seat (3) are respectively slidably connected to the slide rail (6); the front seat (2) and the tail seat (3) can respectively slide back and forth along the slide rail (6); a front tooling plate (7) and a rear tooling plate (8) are respectively arranged on the front seat (2) and the tail seat (3); the mounting surfaces of the front tooling plate (7) and the rear tooling plate (8) are arranged opposite to each other; the front tooling plate (7) and the rear tooling plate (8) are respectively used for detachably connecting the universal couplings (10) at both ends of the transmission shaft assembly (9); The truss (5) is arranged above the frame (1), the welding gun (4) is horizontally slidably connected to the truss (5), at least one end of the truss (5) is provided with a motor (11), the motor (11) is used to drive the welding gun (4) to slide horizontally back and forth along the truss (5), and the welding part of the welding gun (4) is downwardly facing the transmission shaft assembly (9); The front tooling plate (7) and the rear tooling plate (8) are respectively provided with a first position signal detection device (12) and a second position signal detection device (13); The frame (1) is provided with a control box (14), and the first position signal detection device (12), the second position signal detection device (13), and the motor (11) are electrically connected to the control box (14), respectively.

2. A welding gun position adjustment system for integrated assembly and welding of a transmission shaft according to claim 1, characterized in that: The frame (1) is provided with a welding controller (15), and the welding controller (15) is electrically connected to a control box (14) and a welding gun (4) respectively.

3. A welding gun position adjustment system for integrated assembly and welding of a transmission shaft according to claim 2, characterized in that: The frame (1) is provided with a welding module (16), and the welding module (16) is electrically connected to a welding gun (4) and a welding controller (15) respectively.

4. A welding gun position adjustment system for integrated assembly and welding of a transmission shaft according to claim 1, characterized in that: The motor (11) is a servo motor.

5. The welding gun position adjustment system for integrated assembly and welding of a transmission shaft according to claim 1, characterized in that: The frame (1) is covered with a protective cover (17).

6. The welding gun position adjustment system for integrated assembly and welding of a transmission shaft according to claim 1, characterized in that: The slide rail (6) comprises: a dovetail rail and a ladder rail.

7. A welding gun position adjustment system for integrated assembly and welding of a transmission shaft according to claim 1, characterized in that: A cushion block (18) is provided between the upper surface of the frame (1) and the bottom of the transmission shaft assembly (9).

8. The welding gun position adjustment system for integrated assembly and welding of a transmission shaft according to claim 1, characterized in that: The welding gun (4) is provided with a third position signal detection device (19), and the third position signal detection device (19) is electrically connected to the control box (14).

9. A welding gun position adjustment system for integrated assembly and welding of a transmission shaft according to claim 1, characterized in that: The slide rails (6) are provided with two, and the slide rails (6) are parallel to each other.

10. The welding gun position adjustment system for integrated assembly and welding of a transmission shaft according to claim 1, characterized in that: The front tooling disc (7) is rotatably connected to the front seat (2), and the rear tooling disc (8) is rotatably connected to the tail seat (3). The rotation axis of the front tooling disc (7) and the rotation axis of the rear tooling disc (8) are colinear.

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