Perforating device for generator cylinder head

Abstract

The invention relates to the technical field of cylinder head punching, and discloses a punching device for a generator cylinder head, which comprises a generator cylinder head and a top bracket arranged above the generator cylinder head, the top bracket clamps the generator cylinder head through a plurality of side edge clamping parts, and a drill rod for punching the generator cylinder head is arranged on the top bracket. The top support is further provided with an offset part used for adjusting the angle of the drill rod, the offset part comprises a built-in box body, the drill rod is installed on the built-in box body, the drill rod is coaxially provided with a spraying cavity, a penetrating rod fixed to the built-in box body is coaxially inserted into the spraying cavity, and a spiral belt is wound around the outer side wall of the penetrating rod. And an input part for inputting cooling liquid into the spraying cavity is arranged on the built-in box body. The overturning sleeve rotates on the rotating support and is close to the top of the generator cylinder head, so that the drilling rod is in a stable state in the drilling process, and the drilling rod is prevented from shaking and trembling in the inclined drilling process, so that the drilling failure is avoided.

Description

Technical Field

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

[0002] Drilling devices are commonly used to accurately drill holes in generator cylinder heads to ensure accurate hole positions and consistent sizes. Since they are often used in mass production operations, cooling and lubrication protection are required, that is, part of the lubricating fluid is also needed to lubricate the drill bit during the drilling process. Moreover, in the actual drilling process, the drilling device not only performs one type of hole operation, but also needs to perform drilling operations for various hole types including inclined holes. However, limited by the structural conditions, the existing drilling devices are prone to the following problems: First, for drilling inclined holes in the generator cylinder head, the drill bit needs to be tilted and adjusted. After the adjustment is completed, it is aligned with the corresponding position on the generator cylinder head for drilling. However, due to different degrees of inclination during drilling, the drill rod and the drill bit will also vibrate to varying degrees during the drilling process. Therefore, stress treatment needs to be performed on this vibration force to reduce or even avoid the negative impact of this vibration force on the drilling operation; Second, the conventional drill rod has threaded grooves, which have a chip removal function, but at the same time, due to incomplete structure, the coolant will leak out, and it cannot be ensured that the coolant can stay on the drill rod or the drill bit for a long time or all the time. Under the existing conditions, although the method of adding coolant from the outside of the drill rod is adopted, there is a problem that the coolant cannot reach the parts that need to be cooled in the drill rod or the drill bit in time, and even flows to the position of the threaded grooves on the drill rod and is discharged, unable to provide cooling protection for the drill rod and the drill bit.

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

[0004] The purpose of the present invention is to solve the problem in the prior art that the end of the drill bit is the area that urgently needs to be cooled, but the coolant cannot reach this area and is discharged by the threaded grooves on the drill rod, unable to play a cooling role, and to propose a drilling device for a generator cylinder head.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A drilling device for a generator cylinder head, comprising a generator cylinder head and a top bracket arranged above the generator cylinder head. The top bracket clamps the generator cylinder head through a plurality of side clamping parts. A drill rod for drilling the generator cylinder head is arranged on the top bracket. An offset part for adjusting the angle of the drill rod is also arranged on the top bracket. The offset part includes an inner box body. The drill rod is installed on the inner box body, and a spray cavity is coaxially arranged on the drill rod. A through rod fixed to the inner box body is coaxially inserted into the spray cavity. A spiral belt is wound around the outer side wall of the through rod. An input part for inputting coolant into the spray cavity is arranged on the inner box body. A twisting part for changing the number of turns of the spiral belt is also arranged in the inner box body.

[0006] Preferably, the side clamping part includes: A side bracket and a clamping bracket. The top bracket is in the shape of a cross plate, and the side bracket is installed at the end of the top bracket. The clamping bracket slides on the side bracket through a sliding rod, and the clamping bracket clamps the side wall of the generator cylinder head through a pressing spring.

[0007] Preferably, four sliding frames are arranged at the bottom of the top bracket, and two adjacent sliding frames are perpendicular to each other. A first lead screw and a second lead screw arranged in a cross shape are arranged at the bottom of the top bracket, and the first lead screw and the second lead screw slide on the sliding frames through sliders and first sliding grooves. The first lead screw and the second lead screw arranged in a cross shape perpendicularly penetrate the same base.

[0008] Preferably, the offset part further includes: A sliding cylinder and a flipping frame. The sliding cylinder rotates in the base through the flipping frame. The inner box body slides axially in the sliding cylinder through a sliding block and a second sliding groove. An electric lifting rod for pushing the inner box body to move is arranged in the sliding cylinder.

[0009] Preferably, a rotating bracket is arranged at the end of the sliding cylinder, and a flipping sleeve coaxially arranged with the sliding cylinder rotates on the rotating bracket. An expansion rod is connected between the sliding cylinder and the flipping sleeve. The drill rod coaxially penetrates the flipping sleeve and abuts against the generator cylinder head.

[0010] Preferably, an end frame is arranged at the end of the drill rod located in the inner box body, and a meshing gear is coaxially fixed on the end frame. A transmission gear for driving the meshing gear to rotate is also arranged in the inner box body. The drill rod rotates in the inner box body through the end frame.

[0011] Preferably, the input part includes: Multiple groups of liquid inlet holes are opened on the end frame and are used to connect the spray cavity and the inner box body. One-way valves are installed in the liquid inlet holes, and the flow direction of the one-way valves is towards the spray cavity; A rotating disk is arranged in the spray cavity. The through rod rotates coaxially with the rotating disk. One end of the spiral belt is fixed to the rotating disk, and the other end of the spiral belt is fixed to the outer side wall of the end of the through rod far away from the rotating disk.

[0012] Preferably, the input part further includes: The bottom groove is opened at the other end of the drill pipe. The bottom groove communicates with the injection cavity, and the inner diameter of the bottom groove is larger than that of the injection cavity; The metal disk is placed in the bottom groove. There are grooves on the bottom groove, and elastic ropes connected to the metal disk are arranged in the grooves.

[0013] Preferably, the metal disk seals the injection cavity through the elastic rope, and there is a gap between the metal disk and the bottom groove. The thickness of the metal disk is less than the height of the bottom groove. There is a bottom plate in the bottom groove, and a plurality of liquid through holes are opened on the bottom plate.

[0014] Preferably, the torsion part includes: The rotating cylinder rotates in the drill pipe through the rotating groove. The rotating cylinder is coaxially fixed with the rotating disk. A spiral groove is opened on the outer side wall of the rotating cylinder. A lifting groove is arranged on the side wall of the rotating groove, and an L-shaped frame is arranged in the lifting groove. A driving mechanism for driving the L-shaped frame to move up and down is arranged in the built-in box body.

[0015] The beneficial effects of the present invention are as follows: In the present invention, the flipping sleeve rotates on the rotating bracket and is close to the top of the generator cylinder head. Therefore, it has a stable state during the drilling process of the drill pipe, avoiding the problem of the drill pipe shaking and trembling during the inclined drilling process, which may lead to the failure of drilling.

[0016] In the present invention, the driving mechanism is turned on to make the L-shaped frame move horizontally in the lifting groove, so that one end of the L-shaped frame is buckled into the spiral groove on the outer side wall of the rotating cylinder. Then, the L-shaped frame is pressed down to make the rotating cylinder drive the rotating disk to rotate coaxially, and finally drive the spiral belt to twist, changing the number of turns of the spiral belt. Therefore, finally, by adjusting the number of turns of the spiral belt, the spraying amount of the coolant is controlled. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a drilling device for a generator cylinder head proposed by the present invention; Figure 2 It is a schematic internal structure diagram of a sliding cylinder in a drilling device for a generator cylinder head proposed by the present invention; Figure 3 It is a schematic internal structure diagram of a drill pipe in a drilling device for a generator cylinder head proposed by the present invention; Figure 4 For Figure 3 The enlarged structural diagram at position A in Figure 5 For Figure 3 The enlarged structural diagram at position B in Figure 6 It is a cross-sectional view of a drill pipe in a drilling device for a generator cylinder head proposed by the present invention; Figure 7 For Figure 6Schematic enlarged view of the structure at position C in the [specific object].

[0018] In the figure: 1. Generator cylinder head; 2. Top bracket; 3. Side bracket; 4. Sliding frame; 5. First sliding groove; 6. First lead screw; 7. Second lead screw; 8. Base; 9. Drill rod; 10. Pressing spring; 11. Clamping bracket; 12. Sliding cylinder; 13. Built-in box; 14. Sliding block; 15. Second sliding groove; 16. Electric lifting rod; 17. Flipping frame; 18. Telescopic rod; 19. Rotating bracket; 20. Flipping sleeve; 21. Injection cavity; 22. Through rod; 23. Spiral band; 24. Rotating disc; 25. Rotating cylinder; 26. Spiral groove; 27. Lifting groove; 28. L-shaped bracket; 29. Liquid inlet hole; 30. Check valve; 31. End bracket; 32. Meshing gear; 33. Metal disc; 34. Groove; 35. Elastic rope; 36. Bottom groove; 37. Bottom plate; 38. Liquid through hole. Detailed implementation method Embodiment

[0019] Refer to Figures 1-7 , a drilling device for a generator cylinder head, including a generator cylinder head 1 and a top bracket 2 arranged above the generator cylinder head 1. The top bracket 2 clamps the generator cylinder head 1 through a plurality of side clamping parts. Among them, the generator cylinder head 1 is fixed below the top bracket 2 by the side clamping parts. The side clamping parts are prior art and will not be elaborated here. A drill rod 9 for drilling the generator cylinder head 1 is arranged on the top bracket 2, and this drill rod 9 is used to drill the generator cylinder head 1.

[0020] Wherein, an offset part for adjusting the angle of the drill rod 9 is also arranged on the top bracket 2. This offset part is used to adjust the position of the drill rod 9 at the top of the generator cylinder head 1 and the drilling angle, and can realize inclined drilling of the generator cylinder head 1, so as to meet the different drilling requirements for the generator cylinder head 1.

[0021] The offset part includes a built-in box 13. The drill rod 9 is installed on the built-in box 13. A driving motor for driving the rotation of the drill rod 9 is arranged inside the built-in box 13 to provide power for the rotation of the drill rod 9. Among them, the offset part is used to drive the change of the position of the drill rod 9 at the top of the generator cylinder head 1 and the adjustment of the angle deflection.

[0022] The drill pipe 9 is coaxially provided with a jet cavity 21, in which a coolant is filled. A through rod 22 fixed to the built-in box body 13 is coaxially inserted into the jet cavity 21. A spiral band 23 is wound around the outer side wall of the through rod 22. It should be noted that the through rod 22 is in a fixed state, and the drill pipe 9 rotates under the driving action of a driving motor. In this way, under the action of the spiral band 23, the spiral band 23 rotates spirally downward relative to the drill pipe 9, squeezing the coolant in the jet cavity 21 out of the jet cavity 21. This part of the coolant is used to cool the temperature generated by drilling. At the same time, the coolant can flow along the thread groove on the drill pipe 9, carrying debris out of the hole, completing the cooling and chip removal of the hole, and facilitating the continuous drilling of the hole without obstruction.

[0023] An input part for inputting the coolant into the jet cavity 21 is provided on the built-in box body 13. The input part is used to transport the coolant into the jet cavity 21 of the drill pipe 9 to timely supplement the coolant in the jet cavity 21. The input part is a coolant pumping pump, which can timely supplement the coolant. This is prior art and will not be elaborated here.

[0024] A twisting part for changing the number of turns of the spiral band 23 is also provided in the built-in box body 13. It should be noted that the through rod 22 rotates in the jet cavity 21, and the number of turns of the spiral band 23 can be changed. When the rotation speed of the drill pipe 9 is the same, the smaller the number of turns of the spiral band 23, the greater the amount of coolant squeezed out of the jet cavity 21. Therefore, by adjusting the number of turns of the spiral band 23, the amount of coolant squeezed out of the jet cavity 21 can be controlled. When the amount of debris generated during the drilling progress increases and the temperature rises, the number of turns of the spiral band 23 needs to be adjusted in time through the twisting part, so as to control the ejection amount of the coolant.

[0025] The working principle of the present invention is as follows: First, the generator cylinder head 1 to be drilled is clamped below the top bracket 2 through the side clamping part, and then the drill pipe 9 is moved to the corresponding position of the generator cylinder head 1 through the offset part, and then the deflection angle of the drill pipe 9 is adjusted, that is, the drill pipe 9 is adjusted according to the required drilling.

[0026] Then the driving motor is used to provide power for the drill pipe 9. When the drill pipe 9 is drilling, the through rod 22 rotates in the jet cavity 21. As the number of turns of the spiral band 23 changes, the smaller the number of turns of the spiral band 23, the greater the amount of coolant squeezed out of the jet cavity 21. Therefore, by adjusting the number of turns of the spiral band 23, the amount of coolant squeezed out of the jet cavity 21 can be controlled. When the amount of debris generated during the drilling progress increases and the temperature rises, the number of turns of the spiral band 23 needs to be adjusted in time through the twisting part, so as to control the ejection amount of the coolant; The coolant in the jet cavity 21 is squeezed out of the jet cavity 21. This part of the coolant is used to cool the temperature generated by drilling. At the same time, the coolant can flow along the thread groove on the drill pipe 9, carrying debris out of the hole, completing the cooling and chip removal of the hole, and facilitating the continuous drilling of the hole without obstruction. Embodiment

[0027] The side clamping part includes a side bracket 3 and a clamping bracket 11. The top bracket 2 is in the shape of a cross plate, and the side bracket 3 is installed at the end of the top bracket 2. The clamping bracket 11 slides on the side bracket 3 through a sliding rod. The clamping bracket 11 clamps the side wall of the generator cylinder head 1 through a pressing spring 10. Therefore, the two relatively arranged clamping brackets 11 clamp and fix the generator cylinder head 1 through the pressing spring 10.

[0028] Four sliding brackets 4 are arranged at the bottom of the top bracket 2, and two adjacent sliding brackets 4 are perpendicular to each other. A first lead screw 6 and a second lead screw 7 arranged in a cross shape are arranged at the bottom of the top bracket 2. The first lead screw 6 and the second lead screw 7 are arranged vertically, and the first lead screw 6 and the second lead screw 7 slide on the sliding bracket 4 through a slider and a first sliding groove 5. The first lead screw 6 and the second lead screw 7 arranged in a cross shape penetrate through the same base 8 perpendicularly, and the base 8 slides on the first lead screw 6 and the second lead screw 7 through a lead screw hole.

[0029] The sliding of the slider and the first sliding groove 5 on the sliding bracket 4 relies on electric drive to change the positions of the first lead screw 6 and the second lead screw 7 on the sliding bracket 4. The sliding of the slider relying on electric drive is a prior art and will not be elaborated here.

[0030] The offset part further includes a sliding cylinder 12 and a flipping bracket 17. The sliding cylinder 12 rotates in the base 8 through the flipping bracket 17. The flipping bracket 17 is arranged on the base 8, and the flipping bracket 17 drives the sliding cylinder 12 to rotate horizontally, and the sliding cylinder 12 swings in the vertical plane through the flipping bracket 17. The horizontal rotation of the flipping bracket 17 on the base 8 and the swinging of the flipping bracket 17 in the vertical plane are both driven by an external drive mechanism, and the external drive mechanism is a prior art and will not be elaborated here.

[0031] The built-in box 13 slides axially in the sliding cylinder 12 through a sliding block 14 and a second sliding groove 15. An electric lifting rod 16 for pushing the built-in box 13 to move is arranged in the sliding cylinder 12. The electric lifting rod 16 is arranged in the sliding cylinder 12, and the output end of the electric lifting rod 16 is fixed to the built-in box 13. Turning on the electric lifting rod 16 will cause the built-in box 13 to slide axially in the sliding cylinder 12, thereby pushing the drill rod 9 installed on the built-in box 13 towards the generator cylinder head 1, so as to give the drill rod 9 a driving force for advancement. Embodiment

[0032] Refer to Figure 2State, a rotating bracket 19 is provided at the end of the sliding cylinder 12, and a turning sleeve 20 coaxially arranged with the sliding cylinder 12 is rotatably mounted on the rotating bracket 19. An expansion rod 18 is connected between the sliding cylinder 12 and the turning sleeve 20. The drill rod 9 coaxially penetrates the turning sleeve 20 and abuts against the generator cylinder head 1. The setting of the expansion rod 18 provides support for the coaxial arrangement of the sliding cylinder 12 and the turning sleeve 20. At the same time, as the sliding cylinder 12 swings, the rotating bracket 19 always pushes the turning sleeve 20 with the rotating bracket 19 against the top of the generator cylinder head 1 under the action of the expansion rod 18. Meanwhile, an external pressing device is also provided to make the rotating bracket 19 abut against the top of the generator cylinder head 1 to provide turning support for the turning sleeve 20. It should be noted that the expansion rod 18 is an electric expansion rod driven by electricity, which is a prior art and will not be elaborated here. The turning sleeve 20 rotates on the rotating bracket 19 and is close to the top of the generator cylinder head 1. Therefore, during the drilling process of the drill rod 9, it has a stable state, avoiding the problem of shaking and tremor of the drill rod 9 during the inclined drilling process, resulting in the failure of drilling.

[0033] Refer to Figure 4 State, an end frame 31 is provided at the end of the drill rod 9 located in the built-in box 13, and a meshing gear 32 is coaxially fixed on the end frame 31. A transmission gear for driving the meshing gear 32 to rotate is also provided in the built-in box 13. The drill rod 9 rotates in the built-in box 13 through the end frame 31. The built-in box 13 is divided into a driving chamber and a liquid chamber. The driving mechanism is arranged in the driving chamber, and the output end is fixed to the transmission gear. The transmission gear meshes with the meshing gear 32 for transmission. Therefore, relying on the end frame 31 coaxially fixed with the meshing gear 32, the drill rod 9 is driven to rotate together to complete the drilling of the generator cylinder head 1. The liquid chamber is filled with coolant, and this part of the coolant is communicated with the injection chamber 21 through the liquid inlet hole 29 to provide coolant for the injection chamber 21. Embodiment

[0034] Refer to Figures 3-7 State, the input part includes a plurality of liquid inlet holes 29. The liquid inlet holes 29 are opened on the end frame 31 and are used to communicate the injection chamber 21 and the built-in box 13. The liquid inlet holes 29 are communicated with the liquid chamber in the built-in box 13. A one-way valve 30 is installed in the liquid inlet hole 29, and the flow direction of the one-way valve 30 is towards the injection chamber 21. Therefore, the setting of the one-way valve 30 ensures that the coolant in the liquid chamber can flow into the injection chamber 21 along the liquid inlet hole 29 through the one-way valve 30, facilitating the timely replenishment of the coolant.

[0035] A rotating disk 24 is provided inside the injection cavity 21. The through rod 22 rotates coaxially with the rotating disk 24. One end of the spiral belt 23 is fixed to the rotating disk 24, and the other end of the spiral belt 23 is fixed to the outer sidewall of the end of the through rod 22 away from the rotating disk 24. The spiral belt 23 abuts against the inner wall of the injection cavity 21. Since the through rod 22 is stationary while the drill rod 9 is in a rotating state, the spiral belt 23 on the through rod 22 rotates spirally downward relative to the injection cavity 21. Therefore, the coolant existing in the injection cavity 21 will be pushed out of the injection cavity 21, thus completing the functions of cooling and flushing debris during the drilling process.

[0036] Further, when the coolant is pushed out by the spiral belt 23, the pressure inside the injection cavity 21 decreases. Therefore, the coolant in the liquid cavity will be pumped into the injection cavity 21 through the liquid inlet hole 29 to complete the liquid supplement operation.

[0037] The input part further includes a bottom groove 36, which is opened at the other end of the drill rod 9. The bottom groove 36 communicates with the injection cavity 21. A metal disk 33 is placed in the bottom groove 36. A groove 34 is opened on the bottom groove 36, and an elastic rope 35 connected to the metal disk 33 is provided in the groove 34. It should be noted that this setting can ensure that the coolant in the injection cavity 21 squeezes and pushes the metal disk 33, pushing the metal disk 33 away from the originally blocked injection cavity 21. The inner diameter of the bottom groove 36 is larger than the inner diameter of the injection cavity 21. Therefore, when the metal disk 33 is pushed away from the injection cavity 21, the coolant will spray out from the bottom groove 36 and reach the drilling area to complete the cooling, heat dissipation and chip removal operations.

[0038] The metal disk 33 blocks the injection cavity 21 through the elastic rope 35, and there is a gap between the metal disk 33 and the bottom groove 36. The thickness of the metal disk 33 is less than the height of the bottom groove 36. In this way, when the drill rod 9 rotates for drilling, the metal disk 33 exists in the bottom groove 36. A bottom plate 37 is provided in the bottom groove 36, and a plurality of liquid through holes 38 are opened on the bottom plate 37. Therefore, the coolant sprayed out from the injection cavity 21 will spray out from the liquid through holes 38, and at the same time, it does not affect the drilling of the drill rod 9.

[0039] The torsion part includes a rotating cylinder 25. The rotating cylinder 25 rotates inside the drill rod 9 through a rotating groove. The rotating cylinder 25 is coaxially fixed to the rotating disk 24. A spiral groove 26 is opened on the outer sidewall of the rotating cylinder 25. A lifting groove 27 is provided on the sidewall of the rotating groove, and an L-shaped frame 28 is arranged in the lifting groove 27. A driving mechanism for driving the L-shaped frame 28 to move up and down and horizontally is provided inside the built-in box body 13. It should be noted that the driving mechanism is a prior art. In order to drive the L-shaped frame 28 to move vertically and horizontally, a link mechanism is adopted for the driving mechanism, which will not be elaborated here too much.

[0040] When it is necessary to twist the spiral belt 23, only need to activate the drive mechanism to make the L-shaped frame 28 move horizontally in the lifting groove 27, so that one end of the L-shaped frame 28 is buckled into the spiral groove 26 on the outer side wall of the rotating cylinder 25, and then press down the L-shaped frame 28 to make the rotating cylinder 25 drive the rotating disk 24 to rotate coaxially, and finally drive the spiral belt 23 to twist, so that the number of turns of the spiral belt 23 changes. Therefore, finally, by adjusting the number of turns of the spiral belt 23, the spraying amount of the coolant can be controlled.

[0041] 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 and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A drilling device for a generator cylinder head, comprising a generator cylinder head and a top bracket arranged above the generator cylinder head, characterized in that, The top bracket clamps the generator cylinder head through multiple side clamping parts. A drill rod for drilling holes in the generator cylinder head is provided on the top bracket. An offset part for adjusting the angle of the drill rod is also provided on the top bracket. The offset part includes an inner box body. The drill rod is installed on the inner box body, and a spray cavity is coaxially provided in the drill rod. A through rod fixed to the inner box body is coaxially inserted into the spray cavity. A spiral band is wound around the outer side wall of the through rod. An input part for inputting coolant into the spray cavity is provided on the inner box body. A twisting part for changing the number of turns of the spiral band is also provided in the inner box body.

2. The punching device for a generator cylinder head according to claim 1, characterized in that, The side clamping parts include: A side bracket and a clamping bracket. The top bracket is in the shape of a cross plate, and the side bracket is installed at the end of the top bracket. The clamping bracket slides on the side bracket through a sliding rod, and the clamping bracket clamps the side wall of the generator cylinder head through a pressing spring.

3. The drilling device for the generator cylinder head according to claim 1, characterized in that, Four sliding frames are provided at the bottom of the top bracket, and two adjacent sliding frames are perpendicular to each other. A first lead screw and a second lead screw arranged in a cross shape are provided at the bottom of the top bracket, and the first lead screw and the second lead screw slide on the sliding frames through sliders and a first sliding groove. The first lead screw and the second lead screw arranged in a cross shape perpendicularly penetrate through the same base.

4. The drilling device for a generator cylinder head according to claim 1, characterized in that, The offset part further includes: A sliding cylinder and a flipping frame. The sliding cylinder rotates in the base through the flipping frame. The inner box body slides axially in the sliding cylinder through a sliding block and a second sliding groove. An electric lifting rod for pushing the inner box body to move is provided in the sliding cylinder.

5. The punching device for a generator cylinder head according to claim 4, characterized in that, A rotating bracket is provided at the end of the sliding cylinder, and a flipping sleeve coaxially arranged with the sliding cylinder rotates on the rotating bracket. An expansion rod is connected between the sliding cylinder and the flipping sleeve. The drill rod coaxially penetrates through the flipping sleeve and abuts against the generator cylinder head.

6. A punching device for a generator cylinder head according to claim 1, characterized in that, An end bracket is provided at the end of the drill rod located in the inner box body, and a meshing gear is coaxially fixed on the end bracket. A transmission gear for driving the meshing gear to rotate is also provided in the inner box body. The drill rod rotates in the inner box body through the end bracket.

7. A punching device for a generator cylinder head according to claim 6, characterized in that, The input part includes: Multiple groups of liquid inlet holes are opened in the end bracket and are used to connect the spray cavity and the inner box body. One-way valves are installed in the liquid inlet holes, and the flow direction of the one-way valves is towards the spray cavity; A rotating disk is provided in the spray cavity. The through rod rotates coaxially with the rotating disk. One end of the spiral band is fixed to the rotating disk, and the other end of the spiral band is fixed to the outer side wall of the end of the through rod away from the rotating disk.

8. A punching device for a generator cylinder head according to claim 7, characterized in that, The input part further includes: A bottom groove is opened at the other end of the drill rod. The bottom groove is communicated with the spray cavity, and the inner diameter of the bottom groove is larger than the inner diameter of the spray cavity; A metal disk is placed in the bottom groove. A groove is opened on the bottom groove, and an elastic rope connected to the metal disk is provided in the groove.

9. The punching device for a generator cylinder head according to claim 8, characterized in that, The metal disk seals the spray cavity through the elastic rope, and there is a gap between the metal disk and the bottom groove. The thickness of the metal disk is smaller than the height of the bottom groove. A bottom plate is provided in the bottom groove, and multiple liquid through holes are opened on the bottom plate.

10. The punching device for a generator cylinder head according to claim 1, characterized in that, The twisting part includes: A rotating cylinder rotates in the drill rod through a rotating groove. The rotating cylinder is coaxially fixed to the rotating disk. A spiral groove is opened on the outer side wall of the rotating cylinder. A lifting groove is provided on the side wall of the rotating groove, and an L-shaped frame is provided in the lifting groove. A driving mechanism for driving the L-shaped frame to lift and move is provided in the inner box body.

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