Electric arc welding equipment and method for pin shaft machining

Abstract

The invention discloses electric arc welding equipment and method for pin shaft machining, and relates to the technical field of pin shaft machining. The electric arc welding equipment and method for pin shaft machining comprise a welding bin, an electric arc welding device, a welding device and an electric arc welding device, and a placing base is assembled in the welding bin; the rotating part is assembled in the welding bin and is driven by a servo motor, and a movable welding head is assembled at the bottom of the rotating part; a first hydraulic bin connected with the oil pump is assembled in the welding bin. According to the electric arc welding equipment and method for pin shaft machining, a welding bin is opened, a to-be-welded pin shaft is placed in a placing base, an oil pump is driven, oil is introduced into a first hydraulic bin, a partition plate, a first spring, a first transmission rod, a second transmission rod, a sliding plate, a first elastic telescopic rod, a pressing plate, a rotating rod, a hinge rod and a gravity column are matched, and then a shaft base can be stably supported; and the other side of the shaft seat is prevented from tilting during welding, so that the welding effect of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pin shaft processing, in particular to an electric arc welding device and method for pin shaft processing. BACKGROUND

[0002] Welding equipment manufacturing is an industry that involves multiple technical fields, mainly focusing on manufacturing various welding tools and equipment for connecting metal materials. There are various types of welding equipment, including electric arc welding, gas shielded welding, laser welding, spot welding, friction welding, etc. depending on the welding method. In the production and processing of pin shaft products, welding operations are often required to ensure the strength, stability and durability of the products. In the traditional production process of pin shafts, the welding process requires high equipment and technical requirements, especially when dealing with pin shafts, which have complex shapes and different material requirements.

[0003] A kind of electric arc welding device and method for pin shaft processing is disclosed in Chinese patent CN118527781A granted and announced on August 23, 2024, which includes a fixing frame, an electric arc welding machine body, an angle adjusting mechanism and a fixing mechanism.

[0004] In the above application file, the pin shaft is fixed by using a fixing frame, but when the shaft seat and shaft body of the pin shaft are welded, the welding head moves down to the shaft seat, and one side of the shaft seat is subjected to additional force, which may cause the other side of the shaft seat to be raised, thereby affecting the welding effect of the device. SUMMARY

[0005] To overcome the shortcomings of the prior art, the present application provides an electric arc welding device and method for pin shaft processing, which solves the problems raised in the background art. To achieve the above purpose, the present application is realized by the following technical scheme: an electric arc welding device and method for pin shaft processing, comprising: a welding chamber, the inside of the welding chamber is equipped with a placing seat; a rotating member, the rotating member is assembled in the welding chamber and is driven by a servo motor, the bottom of the rotating member is equipped with a movable welding head; the inside of the welding chamber is equipped with a hydraulic chamber I connected with an oil pump, the inside of the placing seat is slidably connected with a sliding plate, the top of the placing seat is rotatably connected with a rotating rod, the hydraulic chamber I, the sliding plate and the rotating rod are equipped with a transmission member for transmission, the side of the sliding plate is connected with a pressing plate through the setting of an elastic expansion rod I, the side of the rotating rod is hinged with a hinge rod, the side of the hinge rod is equipped with a gravity column, the inside of the welding chamber is equipped with an exhaust assembly for extracting exhaust gas, and the inside of the welding chamber is equipped with an adsorption assembly.

[0006] Preferably, the transmission part comprises a partition plate rotatably connected in the hydraulic chamber one, the side of the partition plate is equipped with spring one, one side of the hydraulic chamber one is slidably connected with transmission rod one through setting piston, the other side of the hydraulic chamber one is slidably connected with transmission rod two through setting piston. Through the setting of the device, the shaft seat can be stably supported, preventing the other side of the shaft seat from being raised during welding, and the welding effect of the device is improved.

[0007] Preferably, the transmission rod one is located at the side of the sliding plate and is in a fixed state with the sliding plate.

[0008] Preferably, the rotating rod is located at the side of the transmission rod two and is in a fixed state with the transmission rod two.

[0009] Preferably, the end of the spring one away from the partition plate is equipped on the inner wall of the hydraulic chamber one.

[0010] Preferably, the extraction assembly comprises an extraction pipeline equipped between the welding chamber and the rotating part, the extraction pipeline is composed of two hard pipes and one soft pipe, the side of the transmission rod two is fixedly connected with a connecting rod, the inside of the welding chamber is equipped with a hydraulic chamber two, one end of the hydraulic chamber two is slidably connected with an arc-shaped rod through setting piston, the other end of the hydraulic chamber two is slidably connected with a horizontal rod through setting piston, the side of the horizontal rod is fixedly connected with a gear ring, the bottom of the extraction pipeline is rotatably connected with a pipeline joint, the outside of the pipeline joint is fixedly connected with a gear, and the bottom of the pipeline joint is equipped with an extraction head. Through the setting of the extraction assembly, the extraction head is in a rotating state when extracting waste gas, and the extraction effect of the device on waste gas is further improved.

[0011] Preferably, the arc-shaped rod is located at the side of the connecting rod and is in a fixed state with the connecting rod.

[0012] Preferably, the adsorption assembly comprises a suction cup equipped at the side of the pressing plate, the side of the hydraulic chamber one is equipped with a hydraulic hose in communication therewith, the side of the pressing plate is respectively equipped with a hydraulic chamber three and an air pressure chamber, and the side of the hydraulic chamber three is slidably connected with an air pressure rod through setting piston. Through the setting of the adsorption assembly, the adsorption effect of the suction cup on the pin shaft is improved, and the stability during welding is further improved.

[0013] Preferably, the air pressure rod penetrates through the air pressure chamber and is slidably connected with the air pressure chamber through setting piston.

[0014] A use method of an electric arc welding device for pin shaft machining, comprising the following steps: Step one, open the welding chamber, and place the pin shaft to be welded in the placing seat; Step two, drive the oil pump, and import oil into the hydraulic warehouse one, fix the shaft seat of the pin shaft; Step three, enable the rotating part and the movable welding head driven by the servo motor, and perform corresponding welding operation on the pin shaft.

[0015] The application provides an electric arc welding device and method for pin shaft machining. (1) The electric arc welding device and method for pin shaft machining, open the welding warehouse, place the pin shaft to be welded in the placing seat, drive the oil pump, import oil into the hydraulic warehouse one, cooperate with the baffle, spring one, transmission rod one, transmission rod two, sliding plate, elastic telescopic rod one, pressing plate, rotating rod, hinged rod and gravity column, and the shaft seat can be stably supported, the other side of the shaft seat is prevented from being raised during welding, and the welding effect of the device is improved.

[0016] (2) The electric arc welding device and method for pin shaft machining, when the transmission rod two is moved out of the hydraulic warehouse one, the transmission rod two in the moving state can drive the connecting rod to move, cooperate with the extraction pipeline, connecting rod, hydraulic warehouse two, arc-shaped rod, cross rod, gear ring, pipeline joint and gear, so that the extraction head is in a rotating state during extraction of waste gas, and the extraction effect of the device on the waste gas is further improved.

[0017] (3) The electric arc welding device and method for pin shaft machining, when the pressing plate moves to the side of the pin shaft shaft seat and contacts it, and when the baffle rotates, cooperate with the hydraulic hose, hydraulic warehouse three, air pressure warehouse and air pressure rod, the adsorption effect of the suction cup on the pin shaft can be improved, and the stability during welding is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall appearance three-dimensional structure of the application; Figure 2 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the application; Figure 3 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the application from another perspective; Figure 4 It is a schematic diagram of the three-dimensional structure of part of the application; Figure 5 It is a schematic diagram of the three-dimensional structure of part of the application; Figure 4 It is a schematic diagram of the three-dimensional structure of part of the application; Figure 6 It is a schematic diagram of the three-dimensional structure of the extraction assembly of the application; Figure 7 It is a schematic diagram of the three-dimensional structure of part of the extraction assembly of the application; Figure 8 It is a schematic diagram of the three-dimensional structure of the adsorption assembly of the application; Figure 9Part of the three-dimensional structure of the adsorption assembly of the present application.

[0019] In the figure: 100, welding bin; 200, placing seat; 300, rotating part; 400, welding head; 501, hydraulic bin one; 502, partition; 503, spring one; 504, transmission rod one; 505, transmission rod two; 506, sliding plate; 507, elastic telescopic rod one; 508, pressing plate; 509, rotating rod; 510, hinged rod; 511, gravity column; 600, extraction assembly; 601, extraction pipeline; 602, connecting rod; 603, hydraulic bin two; 604, arc-shaped rod; 605, cross rod; 606, gear ring; 607, pipeline joint; 608, gear; 609, extraction head; 700, adsorption assembly; 701, suction cup; 702, hydraulic hose; 703, hydraulic bin three; 704, air pressure bin; 705, air pressure rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0021] Embodiment one, please refer to Figures 1-5 An electric arc welding device and method for pin shaft machining, comprising: Welding bin 100, the inside of welding bin 100 is equipped with placing seat 200; Rotating part 300, rotating part 300 is equipped in welding bin 100, and is driven by servo motor, the bottom of rotating part 300 is equipped with movable welding head 400; The inside of the welding bin 100 is equipped with a hydraulic bin 1 501 connected with an oil pump, the inside of the placing seat 200 is slidably connected with a sliding plate 506, the top of the placing seat 200 is rotatably connected with a rotating rod 509, the hydraulic bin 1 501 and the sliding plate 506 are equipped with transmission members for transmission between the rotating rod 509, the transmission members include a partition plate 502 rotatably connected in the hydraulic bin 1 501, the side surface of the partition plate 502 is equipped with a spring 1 503, the end of the spring 1 503 away from the partition plate 502 is equipped on the inner wall of the hydraulic bin 1 501, one side of the hydraulic bin 1 501 is slidably connected with a transmission rod 1 504 through setting a piston. Open the welding bin 100, place the pin shaft to be welded in the placing seat 200, drive the oil pump, and input oil into the hydraulic bin 1 501, because the inside of the hydraulic bin 1 501 is rotatably connected with the partition plate 502, and the side surface of the partition plate 502 is equipped with the spring 1 503, so that the oil originally stored in the hydraulic bin 1 501 preferentially flows to the side close to the transmission rod 1 504 under the condition of oil input, and drives the transmission rod 1 504 slidably connected with the hydraulic bin 1 501 to move out of the hydraulic bin 1 501.

[0022] The transmission rod 1 504 is located at the side surface position of the sliding plate 506 and is in a fixed state with the sliding plate 506, the other side of the hydraulic bin 1 501 is slidably connected with a transmission rod 2 505 through setting a piston, the rotating rod 509 is located at the side surface position of the transmission rod 2 505 and is in a fixed state with the transmission rod 2 505, the side surface of the sliding plate 506 is connected with a pressing plate 508 through setting an elastic telescopic rod 1 507. When the transmission rod 1 504 moves out of the hydraulic bin 1 501, the transmission rod 1 504 in the moving state can drive the sliding plate 506 fixedly connected therewith to move, the sliding plate 506 can drive the pressing plate 508 to move to the side surface position of the pin shaft seat and contact with the pin shaft seat through the elastic telescopic rod 1 507, and the sliding plate 506 continues to move, and can apply an additional pressure to the pressing plate 508 through the elastic telescopic rod 1 507 to stably support the shaft seat.

[0023] The side of the rotating rod 509 is hingedly connected with a hinged rod 510, and the side of the hinged rod 510 is provided with a gravity column 511. When the hydraulic chamber one 501 continues to have oil liquid input, the oil liquid can push the partition plate 502, the partition plate 502 can compress the spring one 503 to generate rotation, so that the hydraulic chamber one 501 originally cut off by the partition plate 502 is converted into a communication state, so that the oil liquid in the hydraulic chamber one 501 can flow to the side close to the transmission rod two 505, drive the transmission rod two 505 connected with the hydraulic chamber one 501 through the setting piston to move out of the hydraulic chamber one 501, the transmission rod two 505 in the moving state can drive the rotating rod 509 fixedly connected with it to rotate, so that the rotating rod 509 drives the hinged rod 510 hingedly connected with it to rotate, so that the gravity column 511 fixed on the hinged rod 510 can limit the top position of the pin shaft shaft seat under the action of its own gravity; then, the rotating part 300 driven by the servo motor and the movable welding head 400 are started, so that the pin shaft can be welded correspondingly. In this way, the shaft seat can be stably supported, preventing the other side of the shaft seat from being raised during welding, and improving the welding effect of the device.

[0024] In use, the welding bin 100 is opened, the pin shaft to be welded is placed in the placing seat 200, the oil pump is driven, and oil is input into the hydraulic bin 1 501. The inside of the hydraulic bin 1 501 is rotationally connected with the partition plate 502, and the side surface of the partition plate 502 is assembled with the spring 1 503. Therefore, under the condition that oil is input, the oil originally stored in the hydraulic bin 1 501 preferentially flows to the side close to the transmission rod 1 504, drives the transmission rod 1 504 which is slidably connected with the hydraulic bin 1 501 to move out of the hydraulic bin 1 501, and the transmission rod 1 504 in the moving state drives the sliding plate 506 fixedly connected therewith to move. The sliding plate 506 drives the pressing plate 508 to move to the side of the pin shaft seat through the elastic extension rod 1 507, and the pressing plate 508 moves to the position of the side of the pin shaft seat and contacts with the pin shaft seat. The sliding plate 506 continues to move, and an additional pressure is applied to the pressing plate 508 through the elastic extension rod 1 507, so as to stably support the pin shaft seat. The oil in the hydraulic bin 1 501 continues to be input, the partition plate 502 is pushed, the partition plate 502 is compressed to rotate the spring 1 503, the hydraulic bin 1 501 originally blocked by the partition plate 502 is converted into a communication state, the oil in the hydraulic bin 1 501 flows to the side close to the transmission rod 2 505, the transmission rod 2 505 which is slidably connected with the hydraulic bin 1 501 moves out of the hydraulic bin 1 501, and the transmission rod 2 505 in the moving state drives the rotating rod 509 fixedly connected therewith to rotate, so that the rotating rod 509 drives the hinged rod 510 hinged therewith to rotate, and the gravity column 51 1 fixed on the hinged rod 510 is limited from the top of the pin shaft seat under the action of its own gravity. Then, the rotating piece 300 driven by the servo motor and the movable welding head 400 are started, and the pin shaft is welded.

[0025] Embodiment two, please refer to Figures 1-7On the basis of embodiment one, the inside of the welding bin 100 is equipped with an exhaust assembly 600 for extracting exhaust gas, the exhaust assembly 600 comprises an extraction pipeline 601 assembled between the welding bin 100 and the rotating piece 300, the extraction pipeline 601 is composed of two sections of hard pipes and a section of soft pipe, the side of the transmission rod two 505 is fixedly connected with a connecting rod 602, the inside of the welding bin 100 is equipped with a hydraulic bin two 603, one end of the hydraulic bin two 603 is slidingly connected with an arc-shaped rod 604 through a piston, the arc-shaped rod 604 is located at the side of the connecting rod 602 and is in a fixed state with the connecting rod 602. When the transmission rod two 505 moves out of the hydraulic bin one 501, the transmission rod two 505 in the moving state can drive the connecting rod 602 fixedly connected therewith to move, so that the connecting rod 602 drives the arc-shaped rod 604 fixedly connected therewith to move, and cooperates with the hydraulic bin two 603 slidingly connected with the arc-shaped rod 604 through a piston, so that the arc-shaped rod 604 is synchronously extruded with the oil originally stored in the hydraulic bin two 603 when moving.

[0026] The other end of the hydraulic bin two 603 is slidingly connected with a cross rod 605 through a piston, the side of the cross rod 605 is fixedly connected with a gear ring 606, the bottom of the extraction pipeline 601 is rotatably connected with a pipeline joint 607, the outer side of the pipeline joint 607 is fixedly connected with a gear wheel 608, and the bottom of the pipeline joint 607 is equipped with an extraction head 609. When the oil in the hydraulic bin two 603 is extruded, it can flow to the side close to the cross rod 605, drive the cross rod 605 slidingly connected with the hydraulic bin two 603 to move out of the hydraulic bin two 603, and the cross rod 605 in the moving state can drive the gear ring 606 fixedly connected therewith to move, so that the gear ring 606 moves to the side of the gear wheel 608 and engages with the gear wheel 608. At this time, the rotating piece 300 driven by the servo motor starts to rotate, which can drive the hard extraction pipeline 601 assembled on the rotating piece 300 to rotate, the extraction pipeline 601 drives the pipeline joint 607 connected therewith to revolve, so that the pipeline joint 607 drives the gear wheel 608 fixedly connected therewith to rotate, and the gear wheel 608 is limited by the gear ring 606 engaged therewith at the same time, so that the gear wheel 608 revolves synchronously while rotating, the gear wheel 608 in the rotating state can drive the pipeline joint 607 fixedly connected therewith to rotate, so that the pipeline joint 607 drives the extraction head 609 assembled at the bottom thereof to rotate, which further improves the extraction effect of the device on the exhaust gas.

[0027] When in use, on the basis of Embodiment One, when the transmission rod two 505 is moved out of the hydraulic chamber one 501, the transmission rod two 505 in the moving state can drive the connecting rod 602 fixedly connected thereto to move, so that the connecting rod 602 drives the arc-shaped rod 604 fixedly connected thereto to move, cooperates with the hydraulic chamber two 603 connected through the piston sliding connection with the arc-shaped rod 604, so that the arc-shaped rod 604 is synchronously extruded when moving to the oil originally stored in the hydraulic chamber two 603, the oil is extruded, and can flow to the side close to the horizontal rod 605, drives the horizontal rod 605 connected through the piston sliding connection with the hydraulic chamber two 603 to move out of the hydraulic chamber two 603, the horizontal rod 605 in the moving state can drive the gear ring 606 fixedly connected thereto to move, the gear ring 606 can move to the side surface position of the gear 608 and engage with the gear 608; At this time, the rotating member 300 driven by the servo motor starts to rotate, which can drive the rigid extraction pipeline 601 assembled on the rotating member 300 to rotate, the pipeline joint 607 connected with the rigid extraction pipeline 601 rotates, so that the pipeline joint 607 drives the gear 608 fixedly connected thereto to rotate, and the gear 608 is limited by the gear ring 606 engaged therewith at the same time, so that the gear 608 rotates synchronously when revolving, the gear 608 in the rotating state can drive the pipeline joint 607 fixedly connected thereto to rotate, so that the pipeline joint 607 drives the extraction head 609 assembled at the bottom thereof to rotate.

[0028] Embodiment Three, please refer to Figures 1-9 On the basis of Embodiment One and Embodiment Two, the inside of the welding chamber 100 is assembled with the adsorption assembly 700, and the adsorption assembly 700 comprises the suction disc 701 assembled on the side surface of the pressing plate 508. When the pressing plate 508 moves to the side surface position of the pin shaft seat and contacts with the pin shaft seat, the suction disc 701 assembled on the side surface of the pressing plate 508 can preliminarily adsorb the pin shaft seat.

[0029] The side surface of the hydraulic chamber one 501 is assembled with the hydraulic hose 702 communicated therewith, and the side surface of the pressing plate 508 is respectively assembled with the hydraulic chamber three 703 and the air pressure chamber 704. When the partition plate 502 rotates, part of the oil flowing into the hydraulic chamber one 501 can flow into the hydraulic hose 702, so that part of the oil stored in the hydraulic hose 702 flows into the hydraulic chamber three 703 communicated therewith.

[0030] The side of the hydraulic chamber three 703 is connected with the air pressure rod 705 through setting piston sliding, the air pressure rod 705 penetrates the air pressure chamber 704, and is connected with the air pressure chamber 704 through setting piston sliding.When the oil flows into the hydraulic chamber three 703, the oil in the hydraulic chamber three 703 is extruded, and flows to the side close to the air pressure rod 705, drives the air pressure rod 705 connected with the hydraulic chamber three 703 through setting piston sliding to move out of the hydraulic chamber three 703, cooperates with the air pressure chamber 704 connected with the air pressure rod 705 through setting piston sliding, so that the air pressure rod 705 can extract the residual gas between the suction cup 701 and the pin shaft into the air pressure chamber 704 in the moving process, improves the adsorption effect of the suction cup 701 on the pin shaft, and further improves the stability during welding.

[0031] In use, on the basis of examples one and two, when the pressing plate 508 moves to the side of the pin shaft seat and contacts the pin shaft seat, the suction cup 701 assembled on the side of the pressing plate 508 can preliminarily adsorb the pin shaft seat, and when the partition plate 502 rotates, part of the oil flowing into the hydraulic chamber one 501 can flow into the hydraulic hose 702, so that part of the oil stored in the hydraulic hose 702 flows into the hydraulic chamber three 703 connected therewith, the oil in the hydraulic chamber three 703 is extruded, and flows to the side close to the air pressure rod 705, drives the air pressure rod 705 connected with the hydraulic chamber three 703 through setting piston sliding to move out of the hydraulic chamber three 703, cooperates with the air pressure chamber 704 connected with the air pressure rod 705 through setting piston sliding, so that the air pressure rod 705 can extract the residual gas between the suction cup 701 and the pin shaft into the air pressure chamber 704 in the moving process.

[0032] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An arc welding device for processing pins, characterized in that, include: A welding chamber, the interior of which is equipped with a placement seat; A rotating component, which is assembled inside the welding chamber and driven by a servo motor, has a movable welding head mounted on its bottom. The welding chamber is equipped with a hydraulic chamber I connected to an oil pump. A sliding plate is slidably connected inside the placement seat. A rotating rod is rotatably connected to the top of the placement seat. A transmission component for transmission is assembled between the hydraulic chamber I, the sliding plate, and the rotating rod. A pressure plate is connected to the side of the sliding plate by an elastic telescopic rod. A hinge rod is hinged to the side of the rotating rod. A gravity column is assembled to the side of the hinge rod. An extraction assembly for extracting waste gas is assembled inside the welding chamber. An adsorption assembly is assembled inside the welding chamber.

2. The arc welding equipment for pin processing according to claim 1, characterized in that: The transmission component includes a partition rotatably connected within a hydraulic chamber, a spring being mounted on the side of the partition, a transmission rod being slidably connected to one side of the hydraulic chamber via a piston, and a transmission rod being slidably connected to the other side of the hydraulic chamber via a piston.

3. The arc welding equipment for pin processing according to claim 2, characterized in that: The transmission rod is located on the side of the sliding plate and is fixed to the sliding plate.

4. An arc welding device for pin machining according to claim 2, characterized in that: The rotating rod is located on the side of the second transmission rod and is fixed to the second transmission rod.

5. An arc welding device for pin machining according to claim 2, characterized in that: The end of the spring away from the partition is fitted onto the inner wall of the hydraulic chamber.

6. An arc welding device for pin machining according to claim 2, characterized in that: The extraction assembly includes an extraction pipe assembled between the welding chamber and the rotating component. The extraction pipe consists of two rigid pipe sections and one flexible pipe section. A connecting rod is fixedly connected to the side of the transmission rod two. A hydraulic chamber two is assembled inside the welding chamber. One end of the hydraulic chamber two is slidably connected to an arc-shaped rod via a piston. The other end of the hydraulic chamber two is slidably connected to a crossbar via a piston. A gear ring is fixedly connected to the side of the crossbar. A pipe joint is rotatably connected to the bottom of the extraction pipe. A gear is fixedly connected to the outside of the pipe joint. An extraction head is assembled at the bottom of the pipe joint.

7. An arc welding device for pin machining according to claim 6, characterized in that: The arc-shaped rod is located on the side of the connecting rod and is fixed to the connecting rod.

8. An arc welding device for pin machining according to claim 6, characterized in that: The adsorption assembly includes a suction cup mounted on the side of the pressure plate. A hydraulic hose communicating with the side of the first hydraulic chamber is mounted on the side of the pressure plate. A third hydraulic chamber and a pneumatic chamber are mounted on the side of the pressure plate respectively. A pneumatic rod is slidably connected to the side of the third hydraulic chamber by means of a piston.

9. An arc welding device for pin machining according to claim 8, characterized in that: The pneumatic rod passes through the pneumatic chamber and is slidably connected to the pneumatic chamber via a piston.

10. A method of using an arc welding device for pin machining according to claims 1 to 9, characterized in that, Includes the following steps: Step 1: Open the welding chamber and place the pin to be welded into the placement seat; Step 2: Drive the oil pump to introduce oil into the hydraulic chamber and fix the pin seat. Step 3: Activate the rotating component driven by the servo motor and the movable welding head to perform the corresponding welding operation on the pin shaft.

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