Automatic surfacing equipment for efficient surfacing machining of surfaces of precise shaft workpieces

Abstract

The utility model discloses automatic surfacing equipment for high-efficiency surfacing processing of the surface of a precise shaft workpiece, which comprises a control module, a lathe bed, and a rotary headstock, a tailstock, a lifting bracket, a four-axis trolley, a welding gun configuration, an arc light blocking component and a welding matching device which are connected with the control module through a circuit, a headstock mounting seat and a first linear guide rail are fixedly arranged on the lathe bed, the first linear guide rail is transversely arranged, a four-axis trolley stand column mounting seat is fixedly mounted on the lathe bed, the two rotary headstocks are fixedly mounted at the two ends of the lathe bed, the two tail stocks are fixedly mounted in the middle of the lathe bed, and the arc light blocking assembly is located between the two tail stocks. And automatic switching of the welding guns is achieved. The use efficiency and the surfacing machining of the equipment are improved, and meanwhile, the technical requirements on operators are also reduced. The idle time of the welding gun is shortened. The idle time of the welding gun is shortened, the utilization rate of the welding gun is improved, and the surfacing operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of surfacing welding equipment, in particular to an automatic surfacing welding equipment for high-efficiency surfacing welding processing on the surface of precision shaft workpieces. Background Art

[0002] The outer wall of the oil cylinder of large-scale mining machinery and engineering machinery needs to be surfacing, the main reason is to improve its wear resistance, corrosion resistance and service life. ‌ Surfacing technology significantly improves the use effect and life of the oil cylinder by covering the outer wall surface of the oil cylinder with a layer of alloy material with excellent performance. In addition, some heavy machinery drive shafts often need to be surfacing on alloy drive shafts in order to improve transmission efficiency and wear resistance. In order to better achieve surfacing quality and performance, transition layers and composite layers of materials are usually applied to the surface of the workpiece. The functions of the transition layer include connecting the surface layer and the base material, diluting the surface stress of the base material to prevent cracking during welding and use, and serving as a stress buffer layer for repair conditions, thereby extending the service life of the surface layer and the overall workpiece.

[0003] Therefore, when performing cladding welding of two materials, changing welding wire and loading and unloading the workpiece often takes a long time, resulting in long periods of idle equipment and reduced efficiency in both equipment utilization and workpiece cladding processing. Because automatic torch switching is not possible during welding operations, the cladding torch and corresponding welding wire must be replaced by the operator when changing cladding materials, increasing the operator's skill requirements and reducing production efficiency. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide an automatic surfacing welding equipment for efficient surfacing welding of the surface of precision shaft workpieces, which adopts a double-station structure design with double guns and double wire feeds to solve the problem of low surfacing welding efficiency and equipment utilization efficiency in surfacing welding of workpieces of two different materials of precision shaft parts.

[0005] In order to solve the above technical problems, the present invention is implemented through the following technical solutions: including a control module and a bed, as well as a rotary head frame, a tail frame, a lifting bracket, a four-axis trolley, a welding gun configuration, an arc light shielding component, and a welding supporting device connected to the control module circuit, the bed is fixedly provided with a head frame mounting seat and a first linear guide rail, the first linear guide rail is arranged horizontally, the bed is fixedly provided with a four-axis trolley column mounting seat, two rotary head frames are fixedly installed at both ends of the bed, two tail frames are fixedly installed in the middle of the bed, and the arc light shielding component is located between the two tail frames;

[0006] The welding supporting device consists of a dual-gun dual-wire feeding power supply, a temperature-controlled cold water tank, a PLC electric control cabinet, and a hydraulic station, which are respectively fixedly installed on the bed;

[0007] The arc light blocking assembly is composed of a fixed seat, a first telescopic cylinder, an acrylic plate, an aluminum profile frame and a second linear guide rail, the fixed seat is fixedly mounted on the bed, the acrylic plate is fixedly mounted in the aluminum profile frame, the cylinder body of the first telescopic cylinder is fixedly mounted on the fixed seat, the first telescopic cylinder is fixedly connected to the aluminum profile frame, the aluminum profile frame is slidably mounted in the fixed seat, a guide hole matching the second linear guide rail is provided on the fixed seat, the upper end of the second linear guide rail is fixedly mounted on the aluminum profile frame, and the lower end of the second linear guide rail is slidably mounted in the guide hole of the fixed seat;

[0008] The rotary head frame is composed of a first housing, a flange, a three-jaw self-centering chuck, a drive motor and an RV reducer. The first housing is fixedly mounted on the head frame mounting seat, the drive motor and the RV reducer are both fixedly mounted on the first housing, the flange is rotatably mounted on the first housing, the three-jaw self-centering chuck is coaxial and fixedly mounted on the flange, and the output shafts of the drive motor and the RV reducer are both transmission-connected to the central rotating shaft of the three-jaw self-centering chuck;

[0009] The tailstock is composed of a tailstock, a second box body, a first oil cylinder, a first connecting plate, a telescopic sleeve, a rotating shaft, a second connecting plate, a conductive rod, a conductive plate, a top cone and a first slider, the first slider is fixedly installed on the bottom of the tailstock, the first slider is slidably installed on the first linear guide rail of the bed, the cylinder body of the first oil cylinder is fixedly installed on the fixed seat, the second box body is fixedly installed on the top of the second box body, the first connecting plate, the second connecting plate and the telescopic sleeve are all fixedly installed on the second box body, the rotating shaft is slidably installed in the telescopic sleeve, and the two ends of the rotating shaft are rotatably installed on the first connecting plate and the second connecting plate respectively, the outer end of the piston rod of the first oil cylinder is fixedly connected to the first connecting plate, the conductive plate is rotatably installed on the second connecting plate, the top cone is coaxial and fixedly installed on the outer end surface of the conductive plate, and the conductive rod is fixedly installed on the second connecting plate to form a conductive path with the conductive plate;

[0010] The lifting bracket is composed of a base, a second slider, left and right screw nuts, a forward and reverse screw, a bracket, a handwheel, a connecting rod, a fork plate and a roller, the second slider is fixedly installed on the bottom of the base, the second slider is slidably installed on the first linear guide rail, the two brackets are fixedly installed in the base, the forward and reverse screws are rotatably installed on the two brackets, the handwheel is fixedly installed on the outer end of the forward and reverse screws, the two left and right screw nuts are threadedly installed at both ends of the forward and reverse screws, and the outer ends of the left and right nuts are rotatably installed with guide wheels. A guide groove is formed in the base, and the guide wheel is slidably installed in the guide groove. The lower end of the fork plate is hingedly installed on the base, and the roller is rotatably installed on the top of the fork plate. The lower end of the connecting rod is hingedly installed on the wheel axle of the roller, and the upper end of the connecting rod is hinged to the middle position of the fork plate;

[0011] The four-axis trolley is composed of a column, an X drive shaft, a Y drive shaft, a boom and a Z drive shaft. The column is fixedly mounted on the four-axis trolley column mounting seat, the X drive shaft is fixedly mounted on the column, the Y drive shaft is fixedly mounted on the execution end of the X drive shaft, and the two Z drive shafts are fixedly mounted on the execution end of the Y drive shaft;

[0012] The welding gun configuration consists of a dual wire feeding assembly, a dual-gun wire feeding reel, a buffer, a driving swing shaft, a welding gun and a molten pool camera. The dual wire feeding assembly, the dual-gun wire feeding reel and the buffer are all fixedly mounted on the Y driving shaft, the two driving swing shafts are respectively fixedly mounted on the execution ends of the two Z driving shafts, the molten pool camera is fixedly mounted on the execution end of the Y driving shaft, and the welding gun is fixedly mounted on the execution end of the driving swing shaft.

[0013] Preferably, it further comprises a foot switch, wherein the foot switch circuit is connected to the control module.

[0014] Preferably, the telescopic sleeve is fixed on the second box body by a shaft pin.

[0015] Preferably, a buffer block is fixedly installed on the tailstock, and a limit block that cooperates with the buffer block is fixedly installed on the bed.

[0016] Preferably, a cover for protecting the first oil cylinder is fixedly mounted on the fixing seat.

[0017] Preferably, a first handle is fixedly mounted on the tailstock.

[0018] Preferably, a second handle is fixedly mounted on the base.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] Automatic welding gun switching is achieved. When the cladding material is changed, the cladding welding gun and the corresponding welding wire do not need to be replaced by the operator. The welding gun and its corresponding welding wire can be automatically switched, saving the time of changing the gun, improving the efficiency of equipment use and cladding processing, and also reducing the technical requirements of the operator.

[0021] Shortened welding gun idle time. After cladding is completed at one station and workpieces are being unloaded, the welding gun can be moved to another station via a four-axis trolley to continue welding. Furthermore, if the workpiece process flow permits, the equipment's two stations can perform cladding operations on different welding materials without the need for manual gun and wire changes. This shortens welding gun idle time, improves welding gun utilization, and enhances cladding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a structural diagram of the present utility model.

[0024] Figure 2 It is a schematic diagram of the installation structure of the welding supporting device.

[0025] Figure 3 It is a structural diagram of the rotary head frame.

[0026] Figure 4 It is a structural diagram of the tailstock.

[0027] Figure 5 It is a structural diagram of the lifting bracket.

[0028] Figure 6 It is a structural diagram of a four-axle trolley.

[0029] Figure 7 It is a structural diagram of the welding gun configuration.

[0030] Figure 8 It is a structural diagram of the arc light blocking component.

[0031] Figure 9 It is a top view of the installation structure of the four-axis trolley column mounting seat.

[0032] Figure 10 yes Figure 9 AA section view. DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with specific embodiments:

[0034] like Figures 1 to 8 The illustrated automatic surfacing equipment for efficient surfacing of precision shaft workpieces includes a control module and a bed 1, as well as a rotary headstock 2, a tailstock 3, a lifting bracket 4, a four-axis trolley 5, a welding gun assembly 6, an arc shield assembly 7, and a welding accessory 8, all connected to the control module circuit. The bed 1 is fixedly provided with headstock mounting blocks 11 and 12 and a first linear guide 52, which is arranged horizontally. A four-axis trolley column mounting block 51 is fixedly provided on the bed 1. Two rotary headstocks 2 are fixedly provided at both ends of the bed 1, and two tailstocks 3 are fixedly provided in the middle of the bed 1. The arc shield assembly 7 is located between the two tailstocks 3. The layout of the two workstations on the bed is mirror-symmetrical with respect to the arc shield assembly. The two sets of rotary headstocks 2, tailstocks 3, lifting brackets 4, four-axis trolleys 5, and welding gun assembly 6 constitute the two workstations. A folding plate 5201 is also fixedly provided on the bed 1 to shield and protect the first linear guide 52.

[0035] The welding supporting device consists of a dual-gun dual-wire feeding power supply 81, a temperature-controlled cold water tank 82, a PLC electric control cabinet 83, and a hydraulic station 84, which are respectively fixedly installed on the bed 1. The dual-gun dual-wire feeding power supply 81 is used to power the dual-wire feeding assembly 61, the hydraulic station 84 is used to control the hydraulic cylinder, the PLC electric control cabinet 83 is used for electronic control operation, and the temperature-controlled cold water tank 82 is used to cool high-temperature components.

[0036] The arc light blocking assembly 7 is composed of a fixed seat 71, a first telescopic cylinder 72, an acrylic plate 73, an aluminum profile frame 74 and a second linear guide rail 75. The fixed seat 71 is fixedly mounted on the bed 1, the acrylic plate 73 is fixedly mounted in the aluminum profile frame 74, the cylinder body of the first telescopic cylinder 72 is fixedly mounted on the fixed seat 71, the first telescopic cylinder 72 is fixedly connected to the aluminum profile frame 74, the aluminum profile frame 74 is slidably mounted in the fixed seat 71, and a guide hole matching the second linear guide rail 75 is provided on the fixed seat 71. The upper end of the second linear guide rail 75 is fixedly mounted on the aluminum profile frame 74, and the lower end of the second linear guide rail 75 is slidably mounted in the guide hole of the fixed seat 71; the function of the arc light blocking assembly 7 is to shield the strong arc light generated during the welding process. The arc blocking assembly 7 is fixed between the two workstations, wherein the combination of the middle acrylic plate and the aluminum profile frame 74 can be controlled by the first telescopic cylinder 72 to realize the automatic lifting function. When the four-axis 5 trolley moves to another workstation, the acrylic plate 73 automatically descends.

[0037] The rotary head frame 2 is composed of a first box body 21, a flange 22, a three-jaw self-centering chuck 23, a drive motor 24 and an RV reducer 25. The first box body 21 is fixedly mounted on the head frame mounting seats 11 and 12, and the drive motor 24 and the RV reducer 25 are both fixedly mounted on the first box body 21. The flange 22 is rotatably mounted on the first box body 21. The three-jaw self-centering chuck 23 is coaxial and fixedly mounted on the flange 22. The rotation of the flange 22 is driven by the drive motor 24 to ensure that the self-centering three-jaw chuck 23 and the workpiece fixed thereon can rotate accurately, and the flange 22 is decelerated and controlled by the RV reducer 25. The self-centering three-jaw chuck 23 is used to fix one end of the workpiece, and its jaws can be adjusted according to the diameter of the workpiece. The output shafts of the drive motor 24 and the RV reducer 25 are both transmission-connected to the central rotating shaft of the flange 22; the first box body 21 has high rigidity and stability to ensure that the welding quality will not be reduced due to vibration during the welding process.

[0038] The tailstock 3 is composed of a tailstock 31, a second box body 32, a first oil cylinder 34, a first connecting plate 35, a telescopic sleeve 36, a rotating shaft 37, a second connecting plate 310, a conductive rod 311, a conductive plate 312, a top cone 313 and a first slider 314. The first slider 314 is fixedly installed at the bottom of the tailstock 31, and the first slider 314 is slidably installed on the first linear guide rail 52 of the bed 1. The cylinder body of the first oil cylinder 34 is fixedly installed on the fixed seat 71, and the second box body 32 is fixedly installed on the top of the second box body 32. The first connecting plate 35, the second connecting plate 310, the telescopic sleeve 36 are all fixedly installed. The tailstock 3 is fixedly mounted on the second housing 32. The rotating shaft 37 is slidably mounted within the telescopic sleeve 36. The ends of the rotating shaft 37 are rotatably mounted on the first connecting plate 35 and the second connecting plate 310, respectively. The outer end of the piston rod of the first oil cylinder 34 is fixedly connected to the first connecting plate 35. The conductive plate 312 is rotatably mounted on the second connecting plate 310. The top cone 313 is coaxially and fixedly mounted on the outer end surface of the conductive plate 312. The conductive rod 311 is fixedly mounted on the second connecting plate 310 to form a conductive path with the conductive plate 312. The top cone 313 in the tailstock 3 is tightened by the first oil cylinder 34. Operating the hydraulic control valve extends the piston rod of the first oil cylinder 34, pushing the rotating shaft 37 outward, thereby tightening the top cone 313 against the other end of the workpiece, meeting the requirements of the welding operation. The foot switch 9 is connected to the PLC electrical control cabinet 83, and the control system controls the hydraulic system, thereby driving the top cone 313 to tighten and loosen the workpiece.

[0039] The lifting bracket 4 is composed of a base 41, a second slider 42, left and right screw nuts 44, a forward and reverse screw 45, a bracket 46, a hand wheel 47, a connecting rod 48, a fork plate 49 and a roller 410. The second slider 42 is fixedly installed at the bottom of the base 41, and the second slider 42 is slidably installed on the first linear guide rail 52. The two brackets 46 are fixedly installed in the base 41, and the forward and reverse screw 45 is rotatably installed on the two brackets 46. The hand wheel 47 is fixedly installed on the outer end of the forward and reverse screw 45, and the two left and right screw nuts 44 are threadedly installed on the forward and reverse screws. At both ends of the counter-threaded lead screw 45, the outer ends of the left and right screw nuts 44 are rotatably mounted with guide wheels. A guide groove is formed in the base 41, and the guide wheels are slidably mounted in the guide groove. The lower end of the fork plate 49 is hingedly mounted on the base 41, and the roller 410 is rotatably mounted on the top of the fork plate 49. The lower end of the connecting rod 48 is hingedly mounted on the wheel axle of the roller 410, and the upper end of the connecting rod 48 is hingedly connected to the middle position of the fork plate 49. By manually rotating the handwheel 47, the left and right screw nuts 44 are engaged with the positive and negative threaded lead screws 45, and the workpiece 10 can be raised and lowered. According to the diameter of the workpiece 10, the height of the roller 410 can be adjusted to raise the workpiece 10 to a position suitable for clamping. When the workpiece 10 is clamped in place and ready to start welding, the roller 410 needs to be lowered to avoid over-positioning of the workpiece 10 during welding, which may affect the welding quality.

[0040] The four-axis trolley 5 consists of a column 53, an X-drive shaft 54, a Y-drive shaft 55, a boom 56, and a Z-drive shaft 57. The column 53 is fixedly mounted on the four-axis trolley column mounting base 51, the X-drive shaft 54 ​​is fixedly mounted on the column 53, the Y-drive shaft 55 is fixedly mounted on the actuating end of the X-drive shaft 54, and two Z-drive shafts 57 are fixedly mounted on the actuating ends of the Y-drive shaft 55. The boom 56 serves to suspend the cables. The X-drive shaft 54 ​​and the Y-drive shaft 55 are both driven by the meshing of a gear and rack, while the Z-drive shaft 57 is driven by a pulley and a lead screw. When the welding operation at the left station is completed and the workpiece is ready for loading and unloading, the four-axis trolley 5 can be moved to the right station, the welding gun 65 can be switched, and the workpiece at the right station can be subjected to a different material buildup welding operation.

[0041] The welding gun configuration 6 consists of a dual wire feeding assembly 61, a dual-gun wire feeding reel 62, a buffer 63, a driving swing shaft 64, a welding gun 65 and a molten pool camera 66. The dual wire feeding assembly 61, the dual-gun wire feeding reel 62 and the buffer 63 are all fixedly mounted on the Y driving shaft 55. The two driving swing shafts 64 are respectively fixedly mounted on the execution ends of the two Z driving shafts 57. The molten pool camera 66 is fixedly mounted on the execution end of the Y driving shaft 55, and the welding gun 65 is fixedly mounted on the execution end of the driving swing shaft 64. The images and videos recorded by the molten pool camera 66 are fed back to the control module, which is helpful for fault analysis and process improvement. The dual swing shaft 64 is driven by a linear motor to control the angle and swing of the welding gun 65. The swing shaft 64 can also be manually adjusted to achieve different welding positions. The CMT process requires the storage of a section of welding wire, and the buffer 63 serves the purpose of storing the wire.

[0042] It also includes a foot switch 9, the foot switch 9 circuit is connected to the control module to facilitate the operator to perform foot control.

[0043] The telescopic shaft sleeve 36 is fixed on the second box body 32 by a shaft pin 39 to limit the telescopic shaft sleeve 36.

[0044] The tailstock 31 is fixedly mounted with a buffer block 315 , and the bed 1 is fixedly mounted with a limit block 13 that matches the buffer block 315 . The contact between the buffer block 315 and the limit block 13 limits the extreme movement position of the tailstock 3 .

[0045] A cover shell 33 for protecting the first oil cylinder 34 is fixedly mounted on the fixing seat 71 to protect the first oil cylinder 34. At the same time, the other end of the cover shell 33 is fixedly connected to the second box body 32, and can also protect the first connecting plate 35 and the rotating shaft 37 therein.

[0046] A first handle 38 is fixedly mounted on the tailstock 31 to facilitate manual movement of the tailstock 3 .

[0047] A second handle 43 is fixedly mounted on the base 41 to facilitate manual movement of the lifting bracket 4 .

Claims

1. An automatic surfacing welding device for efficient surfacing welding of precision shaft workpieces, characterized by: The invention comprises a control module and a bed (1), a rotary head frame (2), a tail frame (3), a lifting bracket (4), a four-axis trolley (5), a welding gun configuration (6), an arc light shielding component (7), and a welding supporting device (8) connected to the control module circuit, wherein the bed (1) is fixedly provided with a head frame mounting seat (11, 12) and a first linear guide rail (52), the first linear guide rail (52) is arranged horizontally, the bed (1) is fixedly provided with a four-axis trolley column mounting seat (51), two rotary head frames (2) are fixedly installed at the two end positions of the bed (1), two tail frames (3) are fixedly installed at the middle position of the bed (1), and the arc light shielding component (7) is located between the two tail frames (3); The welding supporting device is composed of a dual-gun dual-wire feeding power supply (81), a temperature-controlled cold water tank (82), a PLC electric control cabinet (83), and a hydraulic station (84) respectively fixedly mounted on the bed (1); The arc light blocking assembly (7) is composed of a fixed seat (71), a first telescopic cylinder (72), an acrylic plate (73), an aluminum profile frame (74) and a second linear guide rail (75), wherein the fixed seat (71) is fixedly mounted on the bed (1), the acrylic plate (73) is fixedly mounted in the aluminum profile frame (74), the cylinder body of the first telescopic cylinder (72) is fixedly mounted on the fixed seat (71), the first telescopic cylinder (72) is fixedly connected to the aluminum profile frame (74), the aluminum profile frame (74) is slidably mounted in the fixed seat (71), a guide hole matching the second linear guide rail (75) is provided on the fixed seat (71), the upper end of the second linear guide rail (75) is fixedly mounted on the aluminum profile frame (74), and the lower end of the second linear guide rail (75) is slidably mounted in the guide hole of the fixed seat (71); The rotary head frame (2) is composed of a first housing (21), a flange (22), a three-jaw self-centering chuck (23), a driving motor (24) and an RV reducer (25), wherein the first housing (21) is fixedly mounted on the head frame mounting base (11, 12), the driving motor (24) and the RV reducer (25) are both fixedly mounted on the first housing (21), the flange (22) is rotatably mounted on the first housing (21), the three-jaw self-centering chuck (23) is coaxial and fixedly mounted on the flange (22), and the output shafts of the driving motor (24) and the RV reducer (25) are both transmission-connected to the central rotating shaft of the three-jaw self-centering chuck (23); The tailstock (3) is composed of a tailstock (31), a second box (32), a first oil cylinder (34), a first connecting plate (35), a telescopic sleeve (36), a rotating shaft (37), a second connecting plate (310), a conductive rod (311), a conductive plate (312), a top cone (313) and a first slider (314). The first slider (314) is fixedly mounted on the bottom of the tailstock (31), the first slider (314) is slidably mounted on the first linear guide rail (52) of the bed (1), the cylinder body of the first oil cylinder (34) is fixedly mounted on the fixed seat (71), the second box (32) is fixedly mounted on the top of the second box (32), and the first connecting plate (35) is fixedly mounted on the top of the second box (32). The second connecting disk (310) and the telescopic sleeve (36) are all fixedly mounted on the second box body (32); the rotating shaft (37) is slidably mounted in the telescopic sleeve (36); both ends of the rotating shaft (37) are rotatably mounted on the first connecting disk (35) and the second connecting disk (310); the outer end of the piston rod of the first oil cylinder (34) is fixedly connected to the first connecting disk (35); the conductive disk (312) is rotatably mounted on the second connecting disk (310); the top cone (313) is coaxially and fixedly mounted on the outer end surface of the conductive disk (312); and the conductive rod (311) is fixedly mounted on the second connecting disk (310) to form a conductive path with the conductive disk (312); The lifting bracket (4) is composed of a base (41), a second slider (42), left and right screw nuts (44), a positive and negative threaded screw (45), a bracket (46), a hand wheel (47), a connecting rod (48), a fork plate (49) and a roller (410). The second slider (42) is fixedly installed at the bottom of the base (41), and the second slider (42) is slidably installed on the first linear guide rail (52). The two brackets (46) are fixedly installed in the base (41), and the positive and negative threaded screw (45) is rotatably installed on the two brackets (46). The hand wheel (47) is fixedly installed. At the outer end of the positive and negative threaded screw (45), two left and right screw nuts (44) are threadedly installed at both ends of the positive and negative threaded screw (45), and the outer ends of the left and right screw nuts (44) are rotatably installed with guide wheels. A guide groove is formed in the base (41), and the guide wheel is slidably installed in the guide groove. The lower end of the fork plate (49) is hingedly installed on the base (41), and the roller (410) is rotatably installed on the top of the fork plate (49). The lower end of the connecting rod (48) is hingedly installed on the wheel shaft of the roller (410), and the upper end of the connecting rod (48) is hingedly installed at the middle position of the fork plate (49); The four-axis trolley (5) is composed of a column (53), an X drive shaft (54), a Y drive shaft (55), a boom (56) and a Z drive shaft (57), wherein the column (53) is fixedly mounted on the four-axis trolley column mounting seat (51), the X drive shaft (54) is fixedly mounted on the column (53), the Y drive shaft (55) is fixedly mounted on the execution end of the X drive shaft (54), and the two Z drive shafts (57) are fixedly mounted on the execution ends of the Y drive shaft (55); The welding gun configuration (6) consists of a double wire feeding assembly (61), a double-gun wire feeding reel (62), a buffer (63), a driving swing shaft (64), a welding gun (65) and a molten pool camera (66). The double wire feeding assembly (61), the double-gun wire feeding reel (62) and the buffer (63) are all fixedly mounted on the Y driving shaft (55), the two driving swing shafts (64) are respectively fixedly mounted on the execution ends of the two Z driving shafts (57), the molten pool camera (66) is fixedly mounted on the execution end of the Y driving shaft (55), and the welding gun (65) is fixedly mounted on the execution end of the driving swing shaft (64).

2. The automatic surfacing welding equipment for high-efficiency surfacing welding of precision shaft workpieces according to claim 1 is characterized in that: It also includes a foot switch (9), wherein the foot switch (9) is connected to the control module.

3. The automatic surfacing welding equipment for high-efficiency surfacing welding of precision shaft workpieces according to claim 1 is characterized in that: The telescopic shaft sleeve (36) is fixed on the second box body (32) via a shaft pin (39).

4. The automatic surfacing welding equipment for high-efficiency surfacing welding of precision shaft workpieces according to claim 1 is characterized in that: A buffer block (315) is fixedly mounted on the tailstock (31), and a limit block (13) matching the buffer block (315) is fixedly mounted on the bed (1).

5. The automatic surfacing welding equipment for high-efficiency surfacing welding of precision shaft workpieces according to claim 1 is characterized in that: A cover (33) for protecting the first oil cylinder (34) is fixedly mounted on the fixing seat (71).

6. The automatic surfacing welding equipment for high-efficiency surfacing welding of precision shaft workpieces according to claim 1 is characterized in that: A first handle (38) is fixedly mounted on the tailstock (31).

7. The automatic surfacing welding equipment for high-efficiency surfacing welding of precision shaft workpieces according to claim 1 is characterized in that: A second handle (43) is fixedly mounted on the base (41).

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