Outer circle grinding device for automobile parts and using method of outer circle grinding device

Abstract

The invention discloses an outer circle grinding device for automobile parts and a using method of the outer circle grinding device, and relates to the technical field of automobile part machining. According to the outer circle grinding device for the automobile parts and the using method of the outer circle grinding device, the outer circle grinding device comprises a workbench body, and a fixing plate is assembled on the top of the workbench body; and the grinding wheel is assembled in the fixing plate and driven by a servo motor, and a fixing groove is formed in the fixing plate. According to the outer circle grinding device for the automobile parts and the using method of the outer circle grinding device, the tubular automobile parts are placed in the fixing groove, a servo motor used for driving a grinding wheel is started to conduct corresponding grinding operation on the parts, a first chain wheel, a chain, a rotating rod, a second chain wheel, a reciprocating lead screw, a movable base and a sliding groove are matched, and a cleaning plate reciprocates in the horizontal direction; a large number of metal scraps possibly attached to the surfaces of the accessories are brushed off, and the follow-up accessory grinding effect of the grinding wheel is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts processing, and specifically relates to an outer circle grinding device for automobile parts and its use method. Background Technique

[0002] An outer circle grinding device is a device commonly used in machining for high-precision outer circle grinding of circular workpieces. In the automotive manufacturing industry, outer circle grinding is often used for processing automotive parts, especially those parts that require high-precision dimensions and surface finish, such as automotive engine shafts, drive shafts, gears, bearings, etc. Traditional outer circle grinding equipment usually consists of a grinding machine, a grinding head, a grinding wheel, and a workpiece clamping device. The grinding process relies on the relative movement between the high-speed rotation of the grinding wheel and the workpiece to remove the material on the surface of the workpiece, so as to achieve the required dimensional accuracy and surface finish. In the manufacturing process of automotive parts, the outer circle grinding device needs to have extremely high precision and stability. As the requirements for the quality of automotive parts are getting higher and higher, the precision of traditional outer circle grinding technology often fails to meet the requirements in modern automotive parts manufacturing. This leads to the need for more advanced grinding devices to reduce errors, improve processing efficiency, and reduce thermal deformation during the processing.

[0003] The existing outer circle grinding device for automotive parts includes a grinding workbench. The four corner ends of the bottom surface of the grinding workbench are respectively fixedly connected with bases, and a controller is fixedly connected to the left side wall of the grinding workbench. A material collection box is arranged behind the grinding workbench. A material feeding mechanism is arranged on the top surface of the grinding workbench, and the material feeding mechanism includes a guide pipe, a fixed seat, a lead screw, a first driving motor, a movable block, and a pushing rod. The guide pipe is fixedly connected to the top surface of the grinding workbench through supporting plates on both sides, and the fixed seat is fixedly connected to the top surface of the grinding workbench and is located below the guide pipe. The lead screw is movably connected to the inner top surface of the fixed seat through rotating rods at both left and right ends.

[0004] The outer circle grinding device for automotive parts improves the grinding efficiency through the coordinated use of the arranged material feeding mechanism, grinding mechanism, and clamping mechanism. However, when grinding the parts, a large amount of metal chips adhere to the outer surface of the parts, thus affecting the subsequent grinding effect of the grinding wheel on the parts. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an outer circle grinding device for automotive parts and its use method, which solves the problems raised in the above background technique. To achieve the above objectives, the present invention is realized through the following technical solutions: An outer circle grinding device for automotive parts, comprising: A workbench main body, and a fixing plate is assembled on the top of the workbench main body; A grinding wheel, the grinding wheel is assembled in a fixing plate and driven by a servo motor. A fixing groove is provided inside the fixing plate, and a grinding fluid input pipe is assembled on the side of the fixing plate; One side of the grinding wheel is drivingly connected to a first sprocket. A chain is assembled outside the first sprocket. A rotating rod passing through is rotatably connected inside the fixing plate. A second sprocket is fixedly connected to the outside of the rotating rod. A reciprocating screw rod is fixedly connected to the side of the rotating rod. A moving seat is threadedly connected to the outside of the reciprocating screw rod. A sliding groove is provided at the top of the workbench main body. A cleaning plate is assembled on the side of the moving seat. An auxiliary cleaning component for improving the cleaning effect is assembled on the top of the workbench main body. An auxiliary grinding component for improving the grinding effect is assembled on the top of the workbench main body. Through the setting of the device, the cleaning plate reciprocates horizontally, brushing off a large amount of metal debris that may adhere to the surface of the fitting, improving the subsequent grinding effect of the grinding wheel on the fitting.

[0006] Preferably, one end of the chain away from the first sprocket is assembled at the outer side position of the second sprocket.

[0007] Preferably, the moving seat is located at the top of the sliding groove, and the moving seat is slidably connected to the workbench main body through the sliding groove.

[0008] Preferably, the auxiliary cleaning component includes a cam assembled on the outside of the rotating rod. A first hydraulic chamber is assembled on the side of the workbench main body. A force-bearing rod one is slidably connected to the side of the first hydraulic chamber through a piston. A first spring is assembled on the side of the force-bearing rod one. A first hose is assembled on the side of the first hydraulic chamber. A second hydraulic chamber is assembled on the side of the moving seat. An arc-shaped rod one is slidably connected to the side of the second hydraulic chamber through a piston. A transmission rod is rotatably connected to the top of the moving seat. A force-bearing rod two is fixedly connected to the outside of the transmission rod. A cleaning brush is assembled on the side of the transmission rod. Through the setting of the auxiliary cleaning component, the cleaning brush rotates reciprocally synchronously when moving horizontally, further improving the cleaning effect of the device on metal debris, thereby improving the grinding effect of the device.

[0009] Preferably, the force-bearing rod one is located at the side position of the cam and is in contact with the cam.

[0010] Preferably, the force-bearing rod two is located at the side position of the arc-shaped rod one and is in a fixed state with the arc-shaped rod one.

[0011] Preferably, the auxiliary grinding assembly includes a second hose assembled on one side of the hydraulic chamber. A third hydraulic chamber is assembled on the side of the grinding fluid input pipeline. An arc-shaped rod two is slidably connected to the side of the third hydraulic chamber by means of a piston. A pipeline joint is rotatably connected to the side of the grinding fluid input pipeline. A connecting rod is fixedly connected to the side of the pipeline joint. A third force-bearing rod is fixedly connected to the outer side of the connecting rod. A nozzle is assembled on the side of the pipeline joint. By setting the auxiliary grinding assembly, the grinding fluid can be sprayed out in a reciprocating rotation at a certain angle through the nozzle, improving the coverage range of the grinding fluid for the device and further improving the grinding effect of the device.

[0012] Preferably, one end of the second hose away from the first hydraulic chamber is assembled at the side position of the third hydraulic chamber and is in communication with the third hydraulic chamber.

[0013] Preferably, the third force-bearing rod is located at the side position of the arc-shaped rod two and is fixed to the arc-shaped rod two.

[0014] A method for using an external cylindrical grinding device for automotive parts includes the following steps: Step 1: Place the tubular automotive part in the fixed groove; Step 2: Start the servo motor for driving the grinding wheel to perform corresponding grinding operations on the part; Step 3: Start the liquid pump connected to the grinding fluid input pipeline to inject grinding fluid between the grinding wheel and the part.

[0015] The present invention provides an external cylindrical grinding device for automotive parts and a method for using the same. It has the following beneficial effects: (1) For the external cylindrical grinding device for automotive parts and the method for using the same, the tubular automotive part is placed in the fixed groove, and the servo motor for driving the grinding wheel is started to perform corresponding grinding operations on the part. In cooperation with the first sprocket, the chain, the rotating rod, the second sprocket, the reciprocating lead screw, the moving seat and the sliding groove, the cleaning plate reciprocates horizontally to brush off a large amount of metal debris that may adhere to the surface of the part, improving the subsequent grinding effect of the grinding wheel on the part.

[0016] (2) For the external cylindrical grinding device for automotive parts and the method for using the same, when the rotating rod is in a rotating state, the rotating rod can drive the cam assembled on its outer side to rotate. In cooperation with the first hydraulic chamber, the first force-bearing rod, the first spring, the first hose, the second hydraulic chamber, the first arc-shaped rod, the transmission rod and the second force-bearing rod, the cleaning brush reciprocates synchronously while moving horizontally, further improving the cleaning effect of the device on the metal debris, thereby improving the grinding effect of the device.

[0017] (3)The outer circle grinding device of the automotive parts and its use method. When performing corresponding grinding operations on the parts, start the liquid pump connected to the grinding fluid input pipeline, inject the grinding fluid between the grinding wheel and the parts, and cooperate with the second hose, the third hydraulic chamber, the second arc-shaped rod, the pipeline joint, the connecting rod, and the third stress rod, so that the grinding fluid can be reciprocally rotated and sprayed at a certain angle through the nozzle, improving the coverage range of the grinding fluid for the device and further improving the grinding effect of the device. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structure diagram of some parts of the present invention; Figure 2 It is a three-dimensional structure diagram of the overall sectional view of the present invention; Figure 3 It is a three-dimensional structure diagram of the overall sectional view of the present invention from another perspective; Figure 4 It is a three-dimensional structure diagram of the auxiliary cleaning component of the present invention; Figure 5 It is a three-dimensional structure diagram of some parts of the auxiliary cleaning component of the present invention; Figure 6 For the present invention Figure 5 The enlarged structure diagram at A in; Figure 7 It is a three-dimensional structure diagram of the auxiliary grinding component of the present invention; Figure 8 It is a three-dimensional structure diagram of some parts of the auxiliary grinding component of the present invention.

[0019] In the figure: 100, workbench main body; 200, fixing plate; 300, grinding wheel; 400, fixing groove; 800, grinding fluid input pipeline; 501, sprocket one; 502, chain; 503, rotating rod; 504, sprocket two; 505, reciprocating lead screw; 506, moving seat; 507, sliding groove; 508, cleaning plate; 600, auxiliary cleaning component; 601, cam; 602, first hydraulic chamber; 603, first stress rod; 604, first spring; 605, first hose; 606, second hydraulic chamber; 607, first arc-shaped rod; 608, transmission rod; 609, second stress rod; 610, cleaning brush; 700, auxiliary grinding component; 701, second hose; 702, third hydraulic chamber; 703, second arc-shaped rod; 704, pipeline joint; 705, connecting rod; 706, third stress rod; 707, nozzle. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example 1. Please refer to Figures 1 - 3 , an outer circle grinding device for automotive parts and its use method, including: A workbench main body 100, and a fixing plate 200 is assembled on the top of the workbench main body 100; A grinding wheel 300, the grinding wheel 300 is assembled in the fixing plate 200 and is driven by a servo motor. A fixing groove 400 is opened inside the fixing plate 200, and a grinding fluid input pipe 800 is assembled on the side of the fixing plate 200; A first sprocket 501 is drivingly connected to the side of the grinding wheel 300, a chain 502 is assembled on the outside of the first sprocket 501, a through rotating rod 503 is rotatably connected inside the fixing plate 200, and a second sprocket 504 is fixedly connected to the outside of the rotating rod 503. One end of the chain 502 away from the first sprocket 501 is assembled at the outside position of the second sprocket 504. Place the tubular automotive part in the fixing groove 400, start the servo motor for driving the grinding wheel 300, and perform corresponding grinding operations on the part. At this time, the rotating grinding wheel 300 drives the first sprocket 501 drivingly connected thereto to rotate. Cooperating with the chain 502 assembled on the outside of the first sprocket 501, the second sprocket 504 drivingly connected to the first sprocket 501 through the chain 502 rotates, and the second sprocket 504 drives the rotating rod 503 fixedly connected thereto to rotate.

[0022] A reciprocating lead screw 505 is fixedly connected to the side of the rotating rod 503. A moving seat 506 is threadedly connected to the outside of the reciprocating lead screw 505. A sliding groove 507 is opened on the top of the workbench main body 100. The moving seat 506 is located at the top of the sliding groove 507, and the moving seat 506 and the workbench main body 100 are slidably connected through the sliding groove 507. A cleaning plate 508 is assembled on the side of the moving seat 506. When the rotating rod 503 rotates, the rotating rod 503 drives the reciprocating lead screw 505 fixedly connected thereto to rotate. And the moving seat 506 threadedly assembled on the outside of the reciprocating lead screw 505 is restricted by the workbench main body 100 slidably connected to it through the sliding groove 507 at the same time. When the reciprocating lead screw 505 rotates, the moving seat 506 reciprocates horizontally, so that the moving seat 506 drives the cleaning plate 508 assembled on its side to reciprocate together, brushing off a large amount of metal debris that may adhere to the surface of the part, improving the subsequent grinding effect of the grinding wheel 300 on the part.

[0023] During use, place the tubular automotive fitting in the fixed groove 400, activate the servo motor for driving the grinding wheel 300, and perform corresponding grinding operations on the fitting. At this time, the rotating grinding wheel 300 drives the first sprocket 501 connected to it in transmission. Cooperating with the chain 502 assembled outside the first sprocket 501, the second sprocket 504 connected to the first sprocket 501 through the chain 502 rotates. The second sprocket 504 drives the rotating rod 503 fixedly connected to it to rotate, causing the rotating rod 503 to drive the reciprocating screw rod 505 fixedly connected to it to rotate. The moving seat 506 threadedly assembled outside the reciprocating screw rod 505 is restricted by the workbench main body 100 slidably connected to it through the chute 507. When the reciprocating screw rod 505 rotates, the moving seat 506 reciprocates horizontally, causing the moving seat 506 to drive the cleaning plate 508 assembled on its side to reciprocate together, brushing off a large amount of metal debris that may adhere to the surface of the fitting.

[0024] Embodiment 2. Please refer to Figures 1 - 6 , based on Embodiment 1, an auxiliary cleaning assembly 600 for improving the cleaning effect is assembled on the top of the workbench main body 100. The auxiliary cleaning assembly 600 includes a cam 601 assembled outside the rotating rod 503. A first hydraulic chamber 602 is assembled on the side of the workbench main body 100. A first force-bearing rod 603 is slidably connected to the side of the first hydraulic chamber 602 through a piston. The first force-bearing rod 603 is located on the side of the cam 601 and is in contact with the cam 601. A first spring 604 is assembled on the side of the first force-bearing rod 603. When the rotating rod 503 is in a rotating state, the rotating rod 503 can drive the cam 601 assembled outside it to rotate. When the protruding part of the cam 601 rotates to the position of the first force-bearing rod 603, the first force-bearing rod 603 can be squeezed. At this time, the first force-bearing rod 603 compresses the first spring 604 and slides into the first hydraulic chamber 602, thereby squeezing the oil in the first hydraulic chamber 602.

[0025] A hose one 605 is assembled on the side of the hydraulic chamber one 602, a hydraulic chamber two 606 is assembled on the side of the moving seat 506, an arc-shaped rod one 607 is slidably connected to the side of the hydraulic chamber two 606 by arranging a piston, a transmission rod 608 is rotatably connected to the top of the moving seat 506, a force-receiving rod two 609 is fixedly connected to the outside of the transmission rod 608, the force-receiving rod two 609 is located at the side position of the arc-shaped rod one 607 and is in a fixed state with the arc-shaped rod one 607, and a cleaning brush 610 is assembled on the side of the transmission rod 608. When the oil in the hydraulic chamber one 602 is squeezed, part of the oil originally stored in the hydraulic chamber one 602 flows into the hose one 605 communicated with the hydraulic chamber one 602 due to being squeezed, so that part of the oil in the hose one 605 flows into the hydraulic chamber two 606, and the oil originally stored in the hydraulic chamber two 606 then flows towards the end close to the arc-shaped rod one 607, squeezing the arc-shaped rod one 607 out of the hydraulic chamber two 606, so that the arc-shaped rod one 607 drives the force-receiving rod two 609 fixedly connected to it to rotate at a certain angle. When the protruding part of the cam 601 continues to rotate and moves away from the force-receiving rod one 603, the force-receiving rod one 603 loses the action of the cam 601 and can be reset under the action of the spring one 604. Similarly, the force-receiving rod two 609 is reset. In this way, when the cam 601 is in a rotating state, the force-receiving rod two 609 can be in a reciprocating rotating state, thereby driving the transmission rod 608 fixedly connected to the force-receiving rod two 609 to rotate reciprocally, so that the transmission rod 608 drives the cleaning brush 610 assembled on its side to rotate reciprocally, that is, the cleaning brush 610 rotates reciprocally while moving horizontally, further improving the cleaning effect of the device on metal debris and thus improving the grinding effect of the device.

[0026] During use, based on the first embodiment, when the rotating rod 503 is in a rotating state, the rotating rod 503 can drive the cam 601 assembled on its outer side to rotate. When the protruding part of the cam 601 rotates to the first stress rod 603, the first stress rod 603 can be squeezed. At this time, the first stress rod 603 compresses the first spring 604 and slides into the first hydraulic chamber 602, thereby squeezing the hydraulic oil in the first hydraulic chamber 602. As a result, some of the hydraulic oil originally stored in the first hydraulic chamber 602 flows into the first hose 605 connected to the first hydraulic chamber 602 due to the squeeze. Some of the hydraulic oil in the first hose 605 then flows into the second hydraulic chamber 606. The hydraulic oil originally stored in the second hydraulic chamber 606 immediately flows towards the end close to the first arc-shaped rod 607, squeezing the first arc-shaped rod 607 out of the second hydraulic chamber 606, causing the first arc-shaped rod 607 to drive the second stress rod 609 fixedly connected thereto to rotate at a certain angle. When the protruding part of the cam 601 continues to rotate and moves away from the first stress rod 603, the first stress rod 603 loses the effect of the cam 601 and can be reset under the action of the first spring 604. Similarly, the second stress rod 609 is reset. In this way, when the cam 601 is in a rotating state, the second stress rod 609 can be in a reciprocating rotation state, thereby driving the transmission rod 608 fixedly connected to the second stress rod 609 to rotate reciprocally, causing the transmission rod 608 to drive the cleaning brush 610 assembled on its side to rotate reciprocally.

[0027] Embodiment 3. Please refer to Figures 1 - 8 , based on the first and second embodiments, an auxiliary grinding assembly 700 for improving the grinding effect is assembled on the top of the workbench main body 100. The auxiliary grinding assembly 700 includes a second hose 701 assembled on the side of the first hydraulic chamber 602. A third hydraulic chamber 702 is assembled on the side of the grinding fluid input pipe 800. One end of the second hose 701 away from the first hydraulic chamber 602 is assembled at the side position of the third hydraulic chamber 702 and is interconnected with the third hydraulic chamber 702. The side of the third hydraulic chamber 702 is slidably connected with a second arc-shaped rod 703 through a piston. When performing corresponding grinding operations on the fittings, the liquid pump connected to the grinding fluid input pipe 800 is activated to inject grinding fluid between the grinding wheel 300 and the fittings. When the hydraulic oil in the first hydraulic chamber 602 flows, some of the hydraulic oil flows into the second hose 701 connected to the first hydraulic chamber 602, causing some of the hydraulic oil originally stored in the second hose 701 to flow into the third hydraulic chamber 702 connected to the second hose 701, driving the second arc-shaped rod 703 slidably connected to the third hydraulic chamber 702 through a piston to extend out of the third hydraulic chamber 702.

[0028] A pipe joint 704 is rotatably connected to the side of the grinding fluid input pipe 800. A connecting rod 705 is fixedly connected to the side of the pipe joint 704. A third force-bearing rod 706 is fixedly connected to the outside of the connecting rod 705. The third force-bearing rod 706 is located on the side of the second arc-shaped rod 703 and is fixed to the second arc-shaped rod 703. A spray head 707 is assembled on the side of the pipe joint 704. When the second arc-shaped rod 703 extends out of the third hydraulic chamber 702, it can drive the third force-bearing rod 706 fixedly connected to it to rotate at a certain angle. When the protruding part of the cam 601 continues to rotate and moves away from the first force-bearing rod 603, the first force-bearing rod 603 loses the action of the cam 601 and can be reset under the action of the first spring 604. Similarly, the third force-bearing rod 706 is reset. The third force-bearing rod 706 in a reciprocating rotation state can drive the connecting rod 705 fixedly connected to it to reciprocate, causing the connecting rod 705 to drive the pipe joint 704 fixedly connected to it to reciprocate. The pipe joint 704 then drives the spray head 707 assembled on its side to reciprocate at a certain angle, spraying the grinding fluid introduced into the grinding fluid input pipe 800 through the rotating spray head 707, improving the coverage range of the grinding fluid for the device and further improving the grinding effect of the device.

[0029] During use, on the basis of Embodiment 1 and Embodiment 2, when performing corresponding grinding operations on the accessories, the liquid pump connected to the grinding fluid input pipe 800 is enabled to inject grinding fluid between the grinding wheel 300 and the accessories. When the oil fluid in the first hydraulic chamber 602 flows, part of the oil fluid flows into the second hose 701 communicating with the first hydraulic chamber 602, causing part of the oil fluid originally stored in the second hose 701 to flow into the third hydraulic chamber 702 communicating with the second hose 701, driving the second arc-shaped rod 703, which is slidably connected to the third hydraulic chamber 702 through a piston, to extend out of the third hydraulic chamber 702, causing the second arc-shaped rod 703 to drive the third force-bearing rod 706 fixedly connected to it to rotate at a certain angle. When the protruding part of the cam 601 continues to rotate and moves away from the first force-bearing rod 603, the first force-bearing rod 603 loses the action of the cam 601 and can be reset under the action of the first spring 604. Similarly, the third force-bearing rod 706 is reset. The third force-bearing rod 706 in a reciprocating rotation state can drive the connecting rod 705 fixedly connected to it to reciprocate, causing the connecting rod 705 to drive the pipe joint 704 fixedly connected to it to reciprocate. The pipe joint 704 then drives the spray head 707 assembled on its side to reciprocate at a certain angle, spraying the grinding fluid introduced into the grinding fluid input pipe 800.

[0030] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. An outer circle grinding device for automobile parts, characterized in that, include: A workbench body, the top of which is equipped with a fixing plate; A grinding wheel is mounted in a fixed plate and driven by a servo motor. A fixing groove is provided inside the fixed plate, and a grinding fluid input pipe is provided on the side of the fixed plate. The side of the grinding wheel is connected to the sprocket one for transmission, the outside of the sprocket one is equipped with a chain, the inside of the fixed plate is rotatably connected to a penetrating rotating rod, the outside of the rotating rod is fixedly connected to the sprocket two, the side of the rotating rod is fixedly connected to a reciprocating screw rod, the outside of the reciprocating screw rod is connected to a movable seat by setting a thread, a slide groove is provided on the top of the workbench body, a cleaning plate is equipped on the side of the movable seat, the top of the workbench body is equipped with an auxiliary cleaning component for improving the cleaning effect, and the top of the workbench body is equipped with an auxiliary grinding component for improving the grinding effect.

2. The external cylindrical grinding device for an automotive part according to claim 1, wherein: One end of the chain away from the first sprocket is assembled on the outer side of the second sprocket.

3. The external cylindrical grinding device for an automotive part according to claim 1, characterized in that: The movable seat is located at the top of the sliding groove, and the movable seat and the workbench body are slidably connected through the sliding groove.

4. The outer circle grinding device for an automotive accessory according to claim 1, characterized in that: The auxiliary cleaning assembly includes a cam assembled on the outside of the rotating rod, a hydraulic tank 1 is assembled on the side of the workbench body, the side of the hydraulic tank 1 is slidably connected to a force-bearing rod 1 by setting a piston, the side of the force-bearing rod 1 is assembled with a spring 1, the side of the hydraulic tank 1 is assembled with a hose 1, the side of the movable seat is assembled with a hydraulic tank 2, the side of the hydraulic tank 2 is slidably connected to an arc rod 1 by setting a piston, the top of the movable seat is rotatably connected to a transmission rod, the outside of the transmission rod is fixedly connected to the force-bearing rod 2, and the side of the transmission rod is assembled with a cleaning brush.

5. The outer circle grinding device for an automotive part according to claim 4, characterized in that: The force-bearing rod 1 is located at a side position of the cam and is in contact with the cam.

6. The external cylindrical grinding device for an automotive part according to claim 4, characterized in that: The second force-bearing rod is located on the side of the first arc-shaped rod and is fixed to the first arc-shaped rod.

7. An outer circle grinding device for an automobile accessory according to claim 4, characterized in that: The auxiliary grinding assembly includes a hose 2 mounted on a side of a hydraulic tank 1, a hydraulic tank 3 mounted on the side of the grinding fluid input pipe, an arc-shaped rod 2 being slidably connected to the side of the hydraulic tank 3 by setting a piston, a pipe joint being rotatably connected to the side of the grinding fluid input pipe, a connecting rod being fixedly connected to the side of the pipe joint, a force-bearing rod 3 being fixedly connected to the outer side of the connecting rod, and a nozzle being mounted on the side of the pipe joint.

8. An outer circle grinding device for an automotive part according to claim 7, characterized in that: One end of the hose 2 away from the hydraulic tank 1 is assembled on the side of the hydraulic tank 3 and is communicated with the hydraulic tank 3.

9. An outer circle grinding device for an automotive accessory according to claim 7, characterized in that: The stress-bearing rod three is located on the side of the arc-shaped rod two and is in a fixed state with the arc-shaped rod two.

10. The usage method of an outer circle grinding device for an automotive accessory according to any one of claims 1 to 9, characterized in that, The following steps are involved: Step 1: Place the tubular auto parts in the fixing groove; Step 2: Activate the servo motor for driving the grinding wheel to perform corresponding grinding operations on the accessories; Step 3: Start the liquid pump connected to the grinding fluid input pipe and inject the grinding fluid into the space between the grinding wheel and the accessories.

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