Polishing device for machining of generator cylinder head

Abstract

The invention relates to the technical field of cylinder head polishing, and discloses a polishing device for machining a generator cylinder head, which comprises an external driving motor and a rotating shaft arranged at the output end of the external driving motor, the rotating shaft is sleeved with a polishing annular belt for polishing the generator cylinder head, the polishing annular belt is bent to be C-shaped and is coaxially arranged with the rotating shaft, and the polishing annular belt is arranged on the rotating shaft. The rotating shaft is coaxially and fixedly provided with two end expansion rings through a support assembly. The structure that the outer semi-ring arc plate rotates on the C-shaped ring through the rotating supporting semi-ring arranged in the rotating groove is adopted, the outer semi-ring arc plate rotates on the C-shaped ring in a reset mode through the reset spring and the rotating supporting semi-ring, and in the initialization state, the outer semi-ring arc plate is vertically arranged; the multiple outer semi-ring arc plates are matched with the inner notch ring to form a ring, and therefore in the process that the outer semi-ring arc plates rotate and expand on the outer side wall of the C-shaped ring through the supporting semi-rings, the end expansion ring originally serving as a whole will be in an expansion state.

Description

Technical Field

[0001] The present invention relates to the technical field of cylinder head grinding, and particularly to a grinding device for processing a generator cylinder head. Background Art

[0002] During the processing of a generator cylinder head, a grinding device is required to grind the generator cylinder head. Usually, the following problems are encountered during the grinding process on the surface of the generator cylinder head: Firstly, there are some cylindrical grooves in the generator cylinder head, and the side walls of these cylindrical grooves need to be ground. However, conventional grinding devices are used to grind the surface of the generator cylinder head and it is difficult to extend into the corresponding cylindrical grooves. Therefore, secondary grinding is required later, that is, first, the surface of the generator cylinder head is preliminarily ground, and then the side walls of the cylindrical grooves in the generator cylinder head are ground again. However, for the grinding of the side walls of the cylindrical grooves, the existing circular grinding disc cannot change the abrasive grain size of the side walls, and this grinding method usually uses multiple switching of grinding devices, resulting in low grinding efficiency; Secondly, the existing grinding is not completed in one grinding. Multiple grinding devices with different abrasive grain sizes are required to grind the surface of the generator cylinder head and the inner wall of the cylindrical groove multiple times. This requires continuous replacement of grinding tools, and at the same time, the pressing degree of the corresponding grinding tools against the inner wall of the cylindrical groove also needs to be adjusted accordingly, that is, when using a grinding tool with a low mesh number for grinding, the pressing degree against the inner wall of the cylindrical groove should be slightly less than that of a grinding tool with a high mesh number against the inner wall of the cylindrical groove, so as to ensure that during the process of replacing the grinding tool with a low mesh number to a grinding tool with a high mesh number, the grinding tool always presses against the inner wall of the cylindrical groove, enabling the smooth grinding of the inner wall of the cylindrical groove.

[0003] Therefore, we have designed a grinding device for processing a generator cylinder head. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem of continuously replacing grinding tools when using grinding devices with different abrasive grain sizes to grind the surface of the generator cylinder head and the inner wall of the cylindrical groove, and to propose a grinding device for processing a generator cylinder head.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A grinding device for processing a generator cylinder head includes an external driving motor and a rotating shaft arranged at the output end of the external driving motor. A grinding annular belt for grinding the generator cylinder head is sleeved outside the rotating shaft. The grinding annular belt is bent into a C shape and is coaxially arranged with the rotating shaft. The rotating shaft is coaxially fixed with two end expansion rings through a bracket assembly. The C-shaped grinding annular belt is threaded through the two end expansion rings; The grinding annular belt includes a first grinding belt, a second grinding belt, and a third grinding belt that are connected end to end in sequence, and a limiting clamping assembly for transposing and positioning the grinding annular belt is provided on the support assembly.

[0006] Preferably, the first grinding belt, the second grinding belt, and the third grinding belt are grinding belts with gradually increasing abrasive grain sizes, and the grinding annular belt is wound around the outer sidewall of the end expansion ring.

[0007] Preferably, the support assembly includes: Two end discs, the end discs are coaxially fixed to the rotating shaft, and the end expansion ring is connected to the end discs through a connecting frame; A brush disc slides along the axis on the rotating shaft, and bristles that abut against the grinding annular belt are provided on the brush disc. An electric push rod for driving the brush disc to lift and lower is provided on one of the end discs.

[0008] Preferably, the end expansion ring includes: Arc-shaped end blocks and C-shaped rings. The C-shaped rings are detachably installed on both sides of the arc-shaped end blocks, and the bottom of the C-shaped rings is flush with the bottom of the arc-shaped end blocks; Inner notched rings and outer semi-circular arc plates. The inner notched rings are fixed to the C-shaped rings, and both ends of the inner notched rings are fixed to both ends of the arc-shaped end blocks. A plurality of outer semi-circular arc plates are provided and are circumferentially equidistant and rotatably arranged on the C-shaped rings.

[0009] Preferably, a plurality of rotating grooves are formed in the inner notched rings, the plurality of rotating grooves are circumferentially equidistant, and the outer semi-circular arc plates rotate on the C-shaped rings through rotating support semi-rings arranged in the rotating grooves.

[0010] Preferably, a lifting arc hole is formed in the arc-shaped end block, and an annular plate slides in the lifting arc hole. A pushing ring plate for pushing the outer semi-circular arc plate to flip is arranged on one side of the annular plate facing the outer semi-circular arc plate.

[0011] Preferably, a connecting cylinder is arranged between the two end expansion rings, and the connecting cylinder is installed on the top of the arc-shaped end block through an installation groove. A through hole communicating with the lifting arc hole is formed in the installation groove. A rotating rod driven by an external driving device is coaxially arranged in the connecting cylinder. A first threaded hole is formed in the annular plate, and a spiral block that extends into the lifting arc hole and is adapted to the first threaded hole on the annular plate is arranged at one end of the rotating rod.

[0012] Preferably, the limiting clamping assembly includes: A first clamping plate and a second clamping plate. The first clamping plate is arranged at the opposite ends of the C-shaped grinding annular belt. Two second clamping plates are provided and are symmetrically arranged on both sides of the first clamping plate. The second clamping plates move on the first clamping plate through a driving member and clamp the grinding annular belt.

[0013] Preferably, the limiting clamping assembly further includes: Rotate the lead screw and the lifting plate. A second threaded hole is provided on the lifting plate. The rotating lead screw is connected to the lifting plate through the second threaded hole, and the lifting plate is connected to the first clamping plate. A driving motor is used to drive the rotating lead screw to rotate forward and backward to drive the first clamping plate to lift.

[0014] Preferably, the driving member is a hydraulic rod. The output end of the hydraulic rod is connected to the second clamping plate and drives the second clamping plate to move towards the first clamping plate. The polishing annular belt is located between the second clamping plate and the first clamping plate.

[0015] The beneficial effects of the present invention are as follows: The present invention adopts a structure in which the outer semi-circular arc plate rotates on the C-shaped ring through the rotating support semi-ring arranged in the rotating groove. Among them, the outer semi-circular arc plate rotates and resets on the C-shaped ring through the reset spring and the rotating support semi-ring. In the initial state, the outer semi-circular arc plate is vertically arranged. A plurality of outer semi-circular arc plates cooperate with the inner notch ring to form a ring. Therefore, during the process of the outer semi-circular arc plate rotating and expanding on the outer side wall of the C-shaped ring through the support semi-ring, the originally integral end expansion ring will be in an expanded state.

[0016] The present invention turns on the peripheral driving device, so that the peripheral driving device drives the spiral block on the rotating rod to rotate, thereby driving the annular plate to lift. During the lifting process of the annular plate, the pushing ring plate will also be lifted together, and the outer semi-circular arc plate will be pushed to turn over. The turning direction is outward turning. Finally, it is realized that the outer diameter of the polishing annular belt will be slightly increased compared with before. At this time, the mesh number of the second polishing belt for polishing increases. Combined with the slightly increased outer diameter of the polishing annular belt, it will fit more closely to the inner wall of the cylindrical groove on the surface of the generator cylinder head. Let the second polishing belt with a multi-mesh number continuously perform secondary polishing on the inner wall of the cylindrical groove, and then repeat the above operation, so that the third polishing belt closely adheres to the inner wall of the cylindrical groove again for three times of polishing. Among them, during this process, through primary polishing, secondary polishing and tertiary polishing, the outer diameter of the polishing annular belt will be expanded three times in sequence, so that subsequent polishing can better fit the polishing. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a polishing device for processing a generator cylinder head proposed by the present invention; Figure 2 is Figure 1 The enlarged structural diagram at A in Figure 3 It is a schematic structural diagram of the polishing annular belt in a polishing device for processing a generator cylinder head proposed by the present invention; Figure 4 It is a schematic structural diagram of the end expansion ring in a polishing device for processing a generator cylinder head proposed by the present invention; Figure 5 is Figure 4Schematic enlarged view of the structure at position B in [the figure]; Figure 6 For Figure 4 Schematic enlarged view of the structure at position C in [the figure]; Figure 7 Partial explosion view of the end expansion ring in a grinding device for machining a generator cylinder head proposed by the present invention; Figure 8 For Figure 7 Schematic enlarged view of the structure at position D in [the figure].

[0018] In the figure: 1, rotating shaft; 2, end disc; 3, grinding ring belt; 31, first grinding belt; 32, second grinding belt; 33, third grinding belt; 4, end expansion ring; 41, arc end block; 42, inner notch ring; 43, outer semi-circular arc plate; 44, rotating groove; 45, rotating support semi-ring; 46, C-shaped ring; 5, connecting cylinder; 6, rotating lead screw; 7, brush disc; 8, electric push rod; 9, connecting frame; 10, driving motor; 11, lifting plate; 12, first clamping plate; 13, driving part; 14, second clamping plate; 15, rotating rod; 16, spiral block; 17, installation groove; 18, lifting arc hole; 19, annular plate; 20, pushing ring plate. Detailed implementation manner

[0019] Referring to Figures 1-8 , a grinding device for machining a generator cylinder head includes an external driving motor and a rotating shaft 1 arranged at the output end of the external driving motor. Therefore, starting the external driving motor will drive the rotating shaft 1 to rotate together. Since a grinding ring belt 3 for grinding the generator cylinder head is sleeved outside the rotating shaft 1, it can drive the grinding ring belt 3 to rotate together and play a role in grinding and machining the surface of the generator cylinder head.

[0020] Referring to Figure 1 In the [specific] state, the rotating shaft 1 rotates and drives the grinding ring belt 3 to rotate together. Therefore, it can form grinding on the annular area where the grinding ring belt 3 contacts the surface of the generator cylinder head. So, it is necessary to continuously move the external driving motor to drive the rotating shaft 1 to move on the surface of the generator cylinder head.

[0021] Referring to Figure 1 And Figure 3In the state, the grinding annular belt 3 is bent into a C shape and coaxially arranged with the rotating shaft 1. The rotating shaft 1 is coaxially fixed with two end expansion rings 4 through a bracket assembly. The grinding annular belt 3 arranged in a C shape is sleeved on the two end expansion rings 4. The two end expansion rings 4 are coaxially arranged up and down. Among them, the grinding annular belt 3 is sleeved on the two end expansion rings 4 to provide support for the vertical arrangement of the grinding annular belt 3 arranged in a C shape. Therefore, the grinding annular belt 3 covered on the outer wall of the end expansion ring 4 close to the surface of the generator cylinder head is the area for grinding.

[0022] Refer to Figure 3 In the state, the grinding annular belt 3 includes a first grinding belt 31, a second grinding belt 32 and a third grinding belt 33 that are connected end to end in sequence. Among them, the mesh number of the abrasive grains on the first grinding belt 31, the second grinding belt 32 and the third grinding belt 33 increases in sequence. Therefore, the grinding annular belt 3 will grind the surface of the generator cylinder head multiple times, so that the surface of the motor cylinder head forms states with different surface roughnesses.

[0023] The bracket assembly is provided with a limit clamping assembly for transposing and positioning the grinding annular belt 3. Among them, the limit clamping assembly is used to drive the grinding annular belt 3 to slide on the end expansion rings 4 arranged up and down. The limit clamping assembly is a prior art and drives the transposition and positioning of the grinding annular belt 3, which will not be elaborated here too much.

[0024] Refer to Figure 1 As shown, the bracket assembly includes two end discs 2. The end discs 2 are coaxially fixed with the rotating shaft 1, and the end expansion ring 4 is connected to the end disc 2 through a connecting frame 9. Therefore, it provides stable support for the setting of the end expansion ring 4. At the same time, when the rotating shaft 1 rotates, it can also drive the end expansion ring 4 to rotate together, and finally drive the grinding annular belt 3 on the end expansion ring 4 to rotate together.

[0025] Among them, a brush disc 7 slides along the axis on the rotating shaft 1, and the brush disc 7 is provided with bristles that abut against the grinding annular belt 3. An electric push rod 8 for driving the brush disc 7 to lift is provided on one of the end discs 2. Therefore, during the process of the grinding annular belt 3 completing the transposition, some of the debris generated by the grinding of the grinding annular belt 3 will adhere to the grinding annular belt 3. As the grinding annular belt 3 is displaced, the side with the adhered debris faces the rotating shaft 1. Therefore, the electric push rod 8 is turned on to drive the brush disc 7 to lift. In this way, the bristles on the outer side wall of the brush disc 7 abut against the grinding annular belt 3. During the lifting process of the brush disc 7, the bristles will clean and brush off the adhered debris, facilitating subsequent continuous grinding.

[0026] Therefore, originally located Figure 2Among them, the first grinding belt 31 wound around the surface of the end expansion ring 4 near the surface of the generator cylinder head is traction-shifted and moved out of the surface of the end expansion ring 4 near the surface of the generator cylinder head. When the second grinding belt 32 moves to the surface of the end expansion ring 4 near the surface of the generator cylinder head, the driving limit clamping assembly is stopped, so as to complete the switching and replacement of the grinding belts with different abrasive grain sizes in the grinding area.

[0027] Among them, the first grinding belt 31, the second grinding belt 32 and the third grinding belt 33 are grinding belts with gradually increasing abrasive grain sizes. The grinding annular belt 3 is wound around the outer side wall of the end expansion ring 4. Therefore, when the first grinding belt 31 or the second grinding belt 32 or the third grinding belt 33 moves to the surface of the end expansion ring 4 near the surface of the generator cylinder head, the corresponding grinding roughness will be changed. Finally, under the state of non-stop grinding, the change of the grinding roughness is completed, improving the grinding adaptability and the diversity of grinding.

[0028] Referring to Figures 4-8 the state, the end expansion ring 4 includes an arc end block 41 and a C-shaped ring 46. The C-shaped ring 46 is detachably installed on both sides of the arc end block 41, and the bottom of the C-shaped ring 46 is flush with the bottom of the arc end block 41. Such a setting ensures that the plane where the bottoms of the arc end block 41 and the C-shaped ring 46 are located is a plane. In this way, when the rotating shaft 1 rotates, the end expansion ring 4 drives the grinding annular belt 3 to rotate together, and the area in contact with the grinding annular belt 3 is the plane at the bottoms of the arc end block 41 and the C-shaped ring 46. Therefore, the plane where the grinding annular belt 3 to be ground is located is a plane, making the grinding smoother.

[0029] The end expansion ring 4 further includes an inner notch ring 42 and an outer semi-circular arc plate 43. The inner notch ring 42 is fixed on the C-shaped ring 46, and both ends of the inner notch ring 42 are fixed on both ends of the arc end block 41. The setting of the inner notch ring 42 provides a smooth surface for the movement of the grinding annular belt 3, making the displacement of the first grinding belt 31, the second grinding belt 32 and the third grinding belt 33 smoother and silkier.

[0030] Among them, multiple outer semi-circular arc plates 43 are provided, and they are arranged at equal circumferential intervals and rotatably arranged on the C-shaped ring 46. Referring to Figure 6 the state, multiple rotating grooves 44 are opened on the inner notch ring 42, and the multiple rotating grooves 44 are arranged at equal circumferential intervals. The outer semi-circular arc plates 43 rotate on the C-shaped ring 46 through the rotating support semi-rings 45 arranged in the rotating grooves 44. Among them, the outer semi-circular arc plates 43 are reset and rotated on the C-shaped ring 46 through the resetting spring and the rotating support semi-rings 45. In the initial state, the outer semi-circular arc plates 43 are vertically arranged, and the multiple outer semi-circular arc plates 43 form a ring in cooperation with the inner notch ring 42. Therefore, during the process of the outer semi-circular arc plates 43 rotating and expanding on the outer side wall of the C-shaped ring 46 through the support semi-rings 45, the originally integral end expansion ring 4 will be in an expanded state.

[0031] Among them, a lifting arc hole 18 is formed in the arc-shaped end block 41, and an annular plate 19 slides in the lifting arc hole 18. Therefore, the annular plate 19 vertically slides on the arc-shaped end block 41 through the lifting arc hole 18. A connecting cylinder 5 is arranged between the two end expansion rings 4, and the connecting cylinder 5 is installed on the top of the arc-shaped end block 41 through the installation groove 17. A through hole communicating with the lifting arc hole 18 is formed in the installation groove 17. A rotating rod 15 driven by an external driving device is coaxially arranged in the connecting cylinder 5. A first threaded hole is formed in the annular plate 19. One end of the rotating rod 15 is provided with a spiral block 16 extending into the lifting arc hole 18 and adapted to the first threaded hole on the annular plate 19. It should be noted that the spiral blocks 16 arranged at both ends of the rotating rod 15 have opposite helix directions. The external driving device is a driving motor. Therefore, after the external driving device is turned on, the rotating rod 15 is driven to rotate, and the spiral block 16 extending into the lifting arc hole 18 rotates, driving the annular plate 19 to lift and lower in the lifting arc hole 18.

[0032] A pushing ring plate 20 for pushing the outer half-ring arc plate 43 to flip is arranged on the side of the annular plate 19 facing the outer half-ring arc plate 43. Therefore, the pushing ring plate 20 will also be lifted together during the lifting process of the annular plate 19. It should be noted that when the pushing ring plate 20 is not lifted at the initial position, the pushing ring plate 20 abuts against the inner wall of the outer half-ring arc plate 43 at this time. When the pushing ring plate 20 is lifted, the pushing ring plate 20 will push the inner wall of the outer half-ring arc plate 43 and push the outer half-ring arc plate 43 to flip, and its flipping direction is outward. Therefore, at this time, the outer wall of the end expansion ring 4 as a whole shows an expansion trend, and pushes the polishing annular belt 3 originally located on the outer side wall of the end expansion ring 4 to open, that is, the original Figure 3 The outer diameter of the polishing annular belt 3 in the state will be larger than before.

[0033] It should be noted that as the pushing ring plate 20 is lifted, it pushes the outer half-ring arc plate 43 to flip. Therefore, the polishing annular belt 3 will be slightly tightened, which will not affect the polishing of the surface of the generator cylinder head by the polishing annular belt 3.

[0034] Furthermore, due to the expansion of the outer diameter of the polishing annular belt 3, it further adapts to different polishing states. The specific adaptation states are as follows: First, the C-shaped grinding annular belt 3 is extended into the cylindrical groove on the surface of the generator cylinder head to complete the preliminary grinding of the inner wall of the cylindrical groove. Then, the grinding area of ​​the grinding annular belt 3 is adjusted, that is, after the first grinding belt 31 is switched to the second grinding belt 32 in the grinding area, the external driving device is turned on to rotate the spiral block 16 on the rotating rod 15, thereby driving the annular plate 19 to lift. During the lifting process of the annular plate 19, the pushing annular plate 20 will also be lifted, and the outer semi-annular arc plate 43 will be flipped, and the flipping direction is outward, so as to finally achieve the grinding annular plate 19. The outer diameter of the annular belt 3 will be slightly larger than before. At this time, the mesh number of the second grinding belt 32 is increased, and the outer diameter of the grinding annular belt 3 is slightly increased, so it will fit more closely to the inner wall of the cylindrical groove on the surface of the generator cylinder head, so that the second grinding belt 32 with multiple meshes continues to grind the inner wall of the cylindrical groove for the second time, and then repeat the above operation, so that the third grinding belt 33 is once again close to the inner wall of the cylindrical groove for three times of grinding. In this process, the outer diameter of the grinding annular belt will be enlarged three times in sequence after preliminary grinding, secondary grinding and tertiary grinding, so that the subsequent grinding can better fit the grinding.

[0035] Reference Figure 2 State, the limit clamping assembly includes a first clamping plate 12 and a second clamping plate 14, the first clamping plate 12 is arranged at the opposite end of the grinding annular belt 3 arranged in a C shape, and the second clamping plate 14 is arranged in two and is symmetrically arranged on both sides of the first clamping plate 12, the first clamping plate 12 is lifted and slid on the outer wall of the connecting tube 5 through the connecting rod and the sliding groove, and the second clamping plate 14 moves on the first clamping plate 12 through the driving member 13 and clamps the grinding annular belt 3. In this state, the first clamping plate 12 and the second clamping plate 14 clamp the third grinding belt 33 to provide clamping force for pulling and lifting, wherein due to the clamping of the driving members 13 at both ends of the first clamping plate 12, it can ensure that the grinding annular belt 3 provides stable support in the end expansion ring 4 setting, prevent the grinding annular belt 3 from rotating around the rotating shaft 1, and provide side support for the stable grinding of the grinding annular belt 3.

[0036] The limit clamping assembly further includes a rotating lead screw 6 and a lifting plate 11. A second threaded hole is provided on the lifting plate 11, and the rotating lead screw 6 is connected to the lifting plate 11 through the second threaded hole. The lifting plate 11 is connected to the first clamping plate 12. The driving member 13 is a hydraulic rod, and the output end of the hydraulic rod is connected to the second clamping plate 14 and drives the second clamping plate 14 to move towards the first clamping plate 12. The polishing annular belt 3 is located between the second clamping plate 14 and the first clamping plate 12. Therefore, by rotating the lead screw 6 forward and backward, the clamped polishing annular belt 3 can be driven to change positions. The driving motor 10 is used to drive the lead screw 6 to rotate forward and backward to drive the first clamping plate 12 to lift. After the position change is completed, the driving member 13 is used to move the second clamping plate 14 away from the first clamping plate 12 to release the polishing annular belt 3. Then, the lead screw 6 is rotated in reverse to lower the first clamping plate 12 and the second clamping plate 14, and the driving member 13 is turned on again to clamp the first polishing belt 31 with the first clamping plate 12 and the second clamping plate 14. At this time, the second polishing belt 32 is coated on the lower end expansion ring 4, which means that the secondary polishing is started and the position change is completed.

[0037] The working principle of the present invention is as follows: First, turn on the external driving motor to drive the rotating shaft 1 to rotate with the external driving motor. Under the pushing action, the rotating shaft 1 rotates and drives the polishing annular belt 3 to rotate together. Therefore, the annular area where the polishing annular belt 3 contacts the surface of the generator cylinder head can be polished. For polishing the inner wall of the cylindrical groove on the surface of the generator cylinder head, the end expansion ring 4 adapted to the cylindrical groove can be selected and adjusted. The outer wall of the end expansion ring 4 is coated with the polishing annular belt 3. Therefore, during the reciprocating lifting of the rotating shaft 1 in the cylindrical groove, the inner wall of the cylindrical groove on the surface of the generator cylinder head can be polished.

[0038] Through the limit clamping assembly, the position of the first polishing belt 31, the second polishing belt 32, or the third polishing belt 33 on the end expansion ring 4 moved out and close to the surface of the generator cylinder head is changed, and finally the corresponding polishing roughness is changed. Finally, without stopping the polishing, the change of the polishing roughness is completed, which improves the polishing adaptability and the diversity of polishing.

[0039] The above is only a preferred specific embodiment 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 of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A grinding device for processing a generator cylinder head, comprising an externally provided driving motor and a rotating shaft arranged at the output end of the externally provided driving motor, characterized in that, A grinding annular belt for grinding the generator cylinder head is sleeved outside the rotating shaft. The grinding annular belt is bent into a C shape and is coaxially arranged with the rotating shaft. The rotating shaft is coaxially fixed with two end expansion rings through a bracket assembly. The grinding annular belt arranged in a C shape is threaded through the two end expansion rings. The grinding annular belt includes a first grinding belt, a second grinding belt, and a third grinding belt that are connected end to end in sequence. The bracket assembly is provided with a limit clamping assembly for transposing and positioning the grinding annular belt. The end expansion ring includes: An arc-shaped end block and a C-shaped ring. The C-shaped ring is detachably installed on both sides of the arc-shaped end block, and the bottom of the C-shaped ring is flush with the bottom of the arc-shaped end block. An inner notch ring and an outer semi-circular arc plate. The inner notch ring is fixed on the C-shaped ring, and both ends of the inner notch ring are fixed at both ends of the arc-shaped end block. A plurality of outer semi-circular arc plates are provided and are arranged at equal circumferential intervals and rotatably arranged on the C-shaped ring.

2. The grinding device for machining the generator cylinder head according to claim 1, characterized in that, The first grinding belt, the second grinding belt, and the third grinding belt are grinding belts with gradually increasing abrasive grain sizes. The grinding annular belt is wound around the outer side wall of the end expansion ring.

3. A grinding device for processing a generator cylinder head according to claim 1, characterized in that, The bracket assembly includes: Two end plates. The end plates are coaxially fixed with the rotating shaft, and the end expansion ring is connected to the end plate through a connecting frame. A brush disc slides along the axis on the rotating shaft, and bristles that abut against the grinding annular belt are provided on the brush disc. An electric push rod for driving the brush disc to lift is provided on one of the end plates.

4. A grinding device for machining a generator cylinder head according to claim 1, characterized in that, A plurality of rotating grooves are formed in the inner notch ring, and the plurality of rotating grooves are arranged at equal circumferential intervals. The outer semi-circular arc plate rotates on the C-shaped ring through a rotating support semi-ring arranged in the rotating groove.

5. A grinding device for machining a generator cylinder head according to claim 1, characterized in that, A lifting arc hole is formed in the arc-shaped end block, and an annular plate slides in the lifting arc hole. A pushing ring plate for pushing the outer semi-circular arc plate to flip is arranged on one side of the annular plate facing the outer semi-circular arc plate.

6. A grinding device for machining a generator cylinder head according to claim 5, characterized in that, A connecting cylinder is arranged between the two end expansion rings, and the connecting cylinder is installed on the top of the arc-shaped end block through an installation groove. A through hole communicating with the lifting arc hole is formed in the installation groove. A rotating rod driven by an external driving device is coaxially arranged in the connecting cylinder. A first threaded hole is formed in the annular plate, and a spiral block that extends into the lifting arc hole and is adapted to the first threaded hole on the annular plate is arranged at one end of the rotating rod.

7. A grinding device for processing a generator cylinder head according to claim 1, characterized in that, The limit clamping assembly includes: A first clamping plate and a second clamping plate. The first clamping plate is arranged at the opposite ends of the grinding annular belt arranged in a C shape. Two second clamping plates are provided and are symmetrically arranged on both sides of the first clamping plate. The second clamping plate moves on the first clamping plate through a driving member and clamps the grinding annular belt.

8. A grinding device for processing a generator cylinder head according to claim 7, characterized in that, The limit clamping assembly further includes: A rotating lead screw and a lifting plate. A second threaded hole is formed in the lifting plate, and the rotating lead screw is connected to the lifting plate through the second threaded hole. The lifting plate is connected to the first clamping plate. A driving motor is used to drive the rotating lead screw to rotate forward and backward to drive the first clamping plate to lift.

9. A grinding device for machining a generator cylinder head according to claim 1, characterized in that, The driving member is a hydraulic rod. The output end of the hydraulic rod is connected to the second clamping plate and drives the second clamping plate to move towards the first clamping plate. The grinding annular belt is located between the second clamping plate and the first clamping plate.

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