Motorcycle engine connecting rod oil hole drilling device

Abstract

The invention relates to the technical field of industrial production drilling equipment, and particularly discloses a motorcycle engine connecting rod oil hole drilling device which comprises a base, the end of the base is fixedly sleeved with a supporting rod, the top of the supporting rod is slidably connected with a top seat, and the side face of the top seat is rotatably connected with a first adjusting rod; the side face of the side, away from the first adjusting rod, of the top base is rotationally connected with a second adjusting rod. In the drilling process of the engine connecting rod, the outer surface of the drill rod is supported through the first stabilizing pipe and the second stabilizing pipe, the overall structural strength of the drill rod during working is greatly improved, the possibility of breakage of the drill rod is greatly reduced, the drill rod is strongly protected, the overall working stability of the device is improved, and the service life of the drill rod is prolonged. And meanwhile, the problem that drilling is not accurate enough due to the fact that the drill rod vibrates and deviates in the drilling process can be greatly solved, and meanwhile the possibility that the drill rod deforms can be reduced through the limiting effect of the first stabilizing pipe and the second stabilizing pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial drilling equipment, specifically a motorcycle engine connecting rod oil hole drilling device. BACKGROUND

[0002] In the production process of motorcycle engines, drilling of the connecting rod oil hole is one of the key steps to ensure engine performance. Traditional drilling devices often have some limitations that can affect drilling accuracy and efficiency, and even cause damage to the engine connecting rod. The following are the problems faced by traditional motorcycle engine connecting rod oil hole drilling devices: Insufficient drilling accuracy: During drilling, the stability of the drill rod is crucial to drilling accuracy. Traditional devices may not provide sufficient support, causing the drill rod to vibrate or deviate during drilling, affecting drilling accuracy.

[0003] Drill rod breakage risk: During drilling, the drill rod needs to withstand a lot of force. If the structural strength of the device is not enough, the drill rod may break, which not only causes production interruption, but also may cause injury to the operator.

[0004] Drill rod deformation problem: The drill rod may deform during drilling due to uneven force, which affects the straightness of the drill hole and the smoothness of the hole wall.

[0005] Cooling and cleaning difficulties: During drilling, a large amount of heat and debris is generated. If not cooled and cleaned in time, it may cause the drill bit to overheat and the hole wall to be rough, affecting the quality of drilling.

[0006] Complex operation: The operation of many traditional devices is complex, requiring operators to make fine adjustments and controls, which not only increases the difficulty of operation, but also reduces production efficiency. SUMMARY

[0007] The present application provides a motorcycle engine connecting rod oil hole drilling device to solve the problems mentioned in the background.

[0008] To achieve the above purpose, the present application is implemented by the following technical scheme: a motorcycle engine connecting rod oil hole drilling device, comprising a base, the end of the base is fixedly sleeved with a support rod, the top of the support rod is slidably connected with a top seat, the side of the top seat is rotatably connected with a first adjusting rod, the side of the top seat away from the first adjusting rod is rotatably connected with a second adjusting rod, further comprising: A drilling mechanism is fixedly installed on the bottom surface of the top seat near the second adjusting rod, and the drilling mechanism is used for drilling the engine connecting rod. The cleaning mechanism is fixedly installed inside the drilling mechanism, is used for cooperating with the drilling mechanism to work, and is used for conveying the cooling liquid during the working of the drilling mechanism. The drilling mechanism comprises a drill rod, the top of the drill rod is rotationally connected to the bottom surface of the top base near one side of the second adjusting rod, the drill rod is vertically arranged, a first stabilizing pipe is slidingly sleeved on the outer surface of the middle part of the drill rod, a positioning rod is slidingly connected through the upper surface of the first stabilizing pipe, three positioning rods are fixedly arranged at equal intervals around the central axis of the first stabilizing pipe, the top of the positioning rod is fixedly connected to the bottom surface of the top base near one side of the second adjusting rod, the positioning rod is arranged on the outer side of the drill rod, the bottom of the positioning rod is slidingly inserted into the second stabilizing pipe, and the second stabilizing pipe is slidingly sleeved on the bottom of the drill rod. If it is required to drill the oil hole of the engine connecting rod, the engine connecting rod can be fixed on the base, then the first adjusting rod and the second adjusting rod are rotated to the specified point, and then the drill rod can be driven to drill the hole in the engine connecting rod. During the drilling of the hole in the engine connecting rod by the drill rod, the drill rod is continuously lowered, and the position of the positioning rod is unchanged.

[0009] Preferably, the bottom of the second stabilizing pipe is fixedly connected with a mounting pipe, the outer surface of the mounting pipe is fixedly sleeved with a positioning ring, the bottom surface of the positioning ring is fixedly connected with a pressure ring, the inner surface of the pressure ring is attached to the outer surface of the mounting pipe, and the bottom of the pressure ring protrudes from the bottom of the mounting pipe.

[0010] Preferably, the bottom outer surface of the pressure ring is slidingly sleeved with a closed outer ring, the inner side of the closed outer ring is provided with a closed inner ring, the top outer surface of the closed inner ring is slidingly connected to the bottom inner surface of the mounting pipe, the closed outer ring and the closed inner ring are arranged on the same central axis, and a cavity is arranged between the closed outer ring and the closed inner ring.

[0011] Preferably, the bottom surface of the pressure ring is fixedly connected with an extrusion ring, the inner and outer sides of the extrusion ring are slidingly connected to the outer surface of the closed inner ring and the inner surface of the closed outer ring respectively, the bottom surface of the extrusion ring is fixedly connected with a bellows, the bellows is made of elastic rubber material, and the bellows is arranged in the cavity between the closed outer ring and the closed inner ring.

[0012] Preferably, the bottom of the bellows is fixedly connected with a sealing ring, the sealing ring is made of rubber material, the inner and outer sides of the sealing ring are fixedly connected to the bottom outer surface of the closed inner ring and the bottom inner surface of the closed outer ring respectively, and the bottom surface of the sealing ring is in the same horizontal plane as the bottom surfaces of the closed outer ring and the closed inner ring.

[0013] Preferably, a cavity is provided between the bellows and the closed inner ring. A pressure relief hole is provided through the upper surface of the extrusion ring, wherein a one-way valve is provided in the pressure relief hole. The pressure relief holes are fixedly spaced at eight intervals around the central axis of the extrusion ring. A venting groove is provided inside the pressure ring. The top of the venting groove is connected to the outside through a through hole. The bottom of the venting groove is connected to the top cavity of the extrusion ring. A negative pressure hole is provided through the upper surface of the sealing ring. The negative pressure hole is fixedly spaced at eight intervals around the central axis of the sealing ring. An expansion groove is provided inside the sealing ring. The expansion groove is connected to the negative pressure hole. Before the second stabilizing tube contacts the engine connecting rod, the closed outer ring, the closed inner ring, and the sealing ring at its bottom will first contact the surface of the engine connecting rod. At this time, as the drill rod continues to move downward, the extrusion force on the closed outer ring and the closed inner ring will gradually increase, thereby causing the closed outer ring and the closed inner ring to move upward.

[0014] Preferably, the cleaning mechanism includes a liquid storage tank, which is located at the bottom of the second stabilizing tube. The bottom of the liquid storage tank is open. The top outer surface of the second stabilizing tube is symmetrically provided with liquid inlet holes, which are connected to the liquid storage tank. A pressure tube is slidably connected to the bottom opening of the liquid storage tank.

[0015] Preferably, a drive ring is slidably sleeved on the bottom outer surface of the pressure tube by a spring, and an injection tube is fixedly connected through the upper surface of the drive ring. The bottom of the injection tube is hollow, and the top of the injection tube is closed.

[0016] Preferably, the top side of the injection pipe has an injection hole, which is initially located below the top of the pressure pipe. The top of the injection pipe is initially at the same level as the upper surface of the pressure pipe. The side of the drive ring is fixedly connected to the top inner surface of the sealing inner ring. When the sealing inner ring is squeezed during drilling, it will also drive the drive ring at its top to move upward. The drive ring and the pressure pipe are elastically connected by a spring. Therefore, when the drive ring moves upward, it will first drive the pressure pipe to move upward as a whole, and then squeeze the liquid storage tank through the top of the pressure pipe, causing the cooling water pressure in the liquid storage tank to increase. When the pressure is greater than the elastic force between the drive ring and the pressure pipe, the pressure pipe stops moving. At this time, the drive ring will drive the injection pipe to continue to move upward, so that the top of the injection pipe protrudes out of the pressure pipe and enters the liquid storage tank until the injection hole enters the liquid storage tank. At this time, under the action of pressure, the coolant enters the injection pipe through the injection hole and enters the drilling location through the bottom of the injection pipe under the action of pressure.

[0017] This invention provides a drilling device for oil holes in connecting rods of motorcycle engines. It has the following advantages: 1. In this motorcycle engine connecting rod oil hole drilling device, before the drill rod contacts the engine connecting rod, the second stabilizing tube contacts the engine connecting rod first, causing the second stabilizing tube to move upward along the positioning rod and gradually approach the first stabilizing tube. This ensures that during the drilling process, the drill rod's outer surface is supported by the first and second stabilizing tubes, greatly improving the overall structural strength of the drill rod during operation and significantly reducing the possibility of drill rod breakage. This not only provides strong protection for the drill rod and improves the overall stability of the device, but also greatly avoids the problem of insufficient drilling accuracy caused by vibration and displacement of the drill rod during drilling. At the same time, the limiting effect of the first and second stabilizing tubes reduces the possibility of drill rod deformation.

[0018] 2. In this motorcycle engine connecting rod oil hole drilling device, when the outer and inner sealing rings move upward, the pressure ring exerts a compressive force on the compression ring at its bottom, which in turn causes the compression ring to exert a compressive force on the bellows, causing the bellows to be compressed and contracted. This ensures that the outer and inner sealing rings are tightly attached to the outer surface of the engine connecting rod, thus sealing the area around the drill hole during drilling and greatly reducing the occurrence of flying debris during drilling. Simultaneously, as the bellows is compressed, air pressure is also input into the expansion groove through the negative pressure hole, causing the bottom surface of the sealing ring to expand, thereby improving the sealing effect between the sealing ring and the engine connecting rod. If the pressure is further increased, and when the bellows is squeezed to the point where it can no longer deform, the pressure relief hole will open due to the air pressure, allowing some of the air pressure inside the bellows to be released through the pressure relief hole. The released air pressure will be transported to the outside through the vent groove in the pressure ring. After drilling is completed, as the drill rod is reset, the compressive force on the bellows gradually decreases until the sealing outer ring and sealing inner ring disengage from the engine connecting rod, thereby allowing the negative pressure hole to connect with the outside. Air pressure is drawn from the outside through the negative pressure hole to compensate for the negative pressure state inside the bellows, causing the bellows to reset for the next drilling operation, which greatly improves the automatic continuity of the device during operation.

[0019] 3. This motorcycle engine connecting rod oil hole drilling device automatically cools the drill rod during operation by introducing coolant. Simultaneously, in conjunction with the drilling mechanism, a sealing ring seals the coolant, greatly reducing the possibility of coolant leakage. By automatically injecting coolant during drilling, the engine connecting rod and drill rod are cooled, significantly extending the service life of the drill rod. The coolant also acts as a lubricant and carries away drilling debris, preventing it from scraping the hole wall and increasing its roughness, thus reducing drilling efficiency. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the external structure of the drilling mechanism of the present invention; Figure 4 This is a schematic diagram of the disassembled structure of the drilling mechanism of the present invention; Figure 5 This is a partial structural schematic diagram of the drilling mechanism of the present invention; Figure 6 This is a schematic diagram of the overall structure of the drilling mechanism of the present invention; Figure 7 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 8 This is a schematic diagram of the injection tube structure of the present invention; Figure 9 This is a schematic diagram of the sealing ring structure of the present invention.

[0021] In the diagram: 1. Base; 2. Support rod; 3. Top seat; 4. First adjusting rod; 5. Second adjusting rod; 6. Drilling mechanism; 61. Drill rod; 62. First stabilizing tube; 63. Positioning rod; 64. Second stabilizing tube; 65. Mounting tube; 66. Positioning ring; 67. Pressure ring; 68. Outer closed ring; 69. Inner closed ring; 610. Extrusion ring; 611. Bellows; 612. Sealing ring; 613. Pressure relief hole; 614. Ventilation groove; 615. Negative pressure hole; 616. Expansion groove; 7. Cleaning mechanism; 71. Liquid storage tank; 72. Liquid inlet; 73. Pressure tube; 74. Drive ring; 75. Injection tube; 76. Injection hole. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] First embodiment: as follows Figures 1 to 9 As shown, the present invention provides a technical solution: a drilling device for oil holes in a motorcycle engine connecting rod, including a base 1, a support rod 2 fixedly sleeved at the end of the base 1, a top seat 3 slidably connected to the top of the support rod 2, a first adjusting rod 4 rotatably connected to the side of the top seat 3, and a second adjusting rod 5 rotatably connected to the side of the top seat 3 away from the first adjusting rod 4, and further including: Drilling mechanism 6 is fixedly installed on the bottom surface of the top seat 3 near the second adjusting rod 5. Drilling mechanism 6 is used to drill holes in the engine connecting rod. Cleaning mechanism 7 is fixedly installed inside drilling mechanism 6. Cleaning mechanism 7 is used to work in conjunction with drilling mechanism 6. Cleaning mechanism 7 is also used to deliver coolant when drilling mechanism 6 is working. The drilling mechanism 6 includes a drill rod 61. The top of the drill rod 61 is rotatably connected to the bottom surface of the top seat 3 near the second adjusting rod 5. The drill rod 61 is vertically arranged. A first stabilizing tube 62 is slidably sleeved on the outer surface of the middle part of the drill rod 61. A positioning rod 63 is slidably connected through the upper surface of the first stabilizing tube 62. Three positioning rods 63 are arranged at fixed intervals around the central axis of the first stabilizing tube 62. The top of the positioning rod 63 is fixedly connected to the bottom surface of the top seat 3 near the second adjusting rod 5. The positioning rod 63 is located on the outside of the drill rod 61. A second stabilizing tube 64 is slidably inserted into the bottom of the positioning rod 63. The second stabilizing tube 64 is slidably sleeved on the bottom of the drill rod 61.

[0024] During operation, if drilling of the oil hole in the engine connecting rod is required, the engine connecting rod can be fixed on the base 1. Then, the first adjusting rod 4 and the second adjusting rod 5 are rotated until the drill rod 61 is at the designated point, thereby driving the drill rod 61 to drill the engine connecting rod. During the drilling process, the drill rod 61 will continuously move downwards, while the position of the positioning rod 63 remains unchanged. Therefore, before the drill rod 61 contacts the engine connecting rod, the second stabilizing tube 64 will first contact the engine connecting rod, causing the second stabilizing tube 64 to move upwards along the positioning rod 63 and gradually approach the first stabilizing tube 62. Even when the drill rod 61 is drilling the engine connecting rod, the first stabilizing tube 62 and the second stabilizing tube 64 support the outer surface of the drill rod 61, which greatly improves the overall structural strength of the drill rod 61 during operation and significantly reduces the possibility of the drill rod 61 breaking. This not only provides strong protection for the drill rod 61 and improves the overall stability of the device, but also greatly avoids the problem of insufficient drilling accuracy caused by vibration and displacement of the drill rod 61 during drilling. At the same time, the limiting effect of the first stabilizing tube 62 and the second stabilizing tube 64 can reduce the possibility of deformation of the drill rod 61.

[0025] Second embodiment: as follows Figures 1 to 9 As shown, the bottom of the second stabilizing tube 64 is fixedly connected to the mounting tube 65, the outer surface of the mounting tube 65 is fixedly sleeved with a positioning ring 66, the bottom surface of the positioning ring 66 is fixedly connected to a pressure ring 67, the inner surface of the pressure ring 67 is attached to the outer surface of the mounting tube 65, and the bottom of the pressure ring 67 protrudes from the bottom of the mounting tube 65.

[0026] A closed outer ring 68 is slidably sleeved on the bottom outer surface of the pressure ring 67. A closed inner ring 69 is provided on the inner side of the closed outer ring 68. The top outer surface of the closed inner ring 69 is slidably connected to the bottom inner surface of the mounting tube 65. The closed outer ring 68 and the closed inner ring 69 are arranged on the same central axis. A cavity is provided between the closed outer ring 68 and the closed inner ring 69.

[0027] A compression ring 610 is fixedly connected to the bottom surface of the pressure ring 67. The inner and outer sides of the compression ring 610 are slidably connected to the outer surface of the inner closed ring 69 and the inner surface of the outer closed ring 68, respectively. A bellows 611 is fixedly connected to the bottom surface of the compression ring 610. The bellows 611 is made of elastic rubber material and is disposed in the cavity between the outer closed ring 68 and the inner closed ring 69.

[0028] A sealing ring 612 is fixedly connected to the bottom of the bellows 611. The sealing ring 612 is made of rubber material. The inner and outer sides of the sealing ring 612 are fixedly connected to the bottom outer surface of the inner closed ring 69 and the bottom inner surface of the outer closed ring 68, respectively. The bottom surface of the sealing ring 612 is at the same level as the bottom surfaces of the outer closed ring 68 and the inner closed ring 69.

[0029] A cavity is provided between the bellows 611 and the closed inner ring 69. A pressure relief hole 613 is provided through the upper surface of the compression ring 610. A one-way valve is provided in the pressure relief hole 613. Eight pressure relief holes 613 are set at fixed intervals around the central axis of the compression ring 610. A venting groove 614 is provided inside the pressure ring 67. The top of the venting groove 614 is connected to the outside through a through hole. The bottom of the venting groove 614 is connected to the top cavity of the compression ring 610. A negative pressure hole 615 is provided through the upper surface of the sealing ring 612. Eight negative pressure holes 615 are set at fixed intervals around the central axis of the sealing ring 612. An expansion groove 616 is provided inside the sealing ring 612. The expansion groove 616 is connected to the negative pressure hole 615.

[0030] During operation, before the second stabilizing tube 64 contacts the engine connecting rod, its bottom outer sealing ring 68, inner sealing ring 69, and sealing ring 612 first contact the surface of the engine connecting rod. As the drill rod 61 continues to move downwards, the compressive force on the outer sealing ring 68 and inner sealing ring 69 gradually increases, causing them to move upwards. When the outer sealing ring 68 and inner sealing ring 69 move upwards, the pressure ring 67 generates a compressive force on its bottom compression ring 610, which in turn causes the compression ring 610 to generate a compressive force on the bellows 611, causing the bellows 611 to be compressed and contracted. This ensures that the outer sealing ring 68 and inner sealing ring 69 are tightly attached to the outer surface of the engine connecting rod, thus sealing the area around the drill hole when the drill rod 61 is drilling. This greatly reduces the occurrence of flying debris during drilling. Simultaneously, as the bellows 611 is compressed, it also reduces air pressure. The pressure is introduced into the expansion groove 616 through the negative pressure hole 615, causing the bottom surface of the sealing ring 612 to expand, thereby further strengthening the sealing effect between the sealing ring 612 and the engine connecting rod. When the bellows 611 is squeezed to the point where it can no longer deform, the pressure relief hole 613 will open due to air pressure, allowing some of the air pressure inside the bellows 611 to be released through the pressure relief hole 613. The released air pressure will be transported to the outside through the vent groove 614 in the pressure ring 67. After drilling is completed, as the drill rod 61 is reset, the compressive force on the bellows 611 gradually decreases until the outer sealing ring and the inner sealing ring are separated from the engine connecting rod, thereby opening the negative pressure hole 615 to the outside. Air pressure is drawn from the outside through the negative pressure hole 615 to compensate for the negative pressure state inside the bellows 611, causing the bellows 611 to reset for the next drilling operation, greatly improving the automatic continuity of the device during operation.

[0031] Third embodiment: as follows Figures 1 to 9 As shown, the cleaning mechanism 7 includes a liquid storage tank 71, which is located at the bottom of the second stabilizing tube 64. The bottom of the liquid storage tank 71 is open. The top outer surface of the second stabilizing tube 64 is symmetrically provided with liquid inlet holes 72, which are connected to the liquid storage tank 71. A pressure tube 73 is slidably connected to the bottom opening of the liquid storage tank 71.

[0032] A drive ring 74 is slidably sleeved on the bottom outer surface of the pressure tube 73 by a spring. An injection tube 75 is fixedly connected through the upper surface of the drive ring 74. The bottom of the injection tube 75 is hollow and the top of the injection tube 75 is closed.

[0033] The top side of the injection tube 75 is provided with an injection hole 76. The injection hole 76 is initially located below the top of the pressure tube 73. The top of the injection tube 75 is initially set to the same horizontal plane as the upper surface of the pressure tube 73. The side of the drive ring 74 is fixedly connected to the top inner surface of the closed inner ring 69.

[0034] During operation, when the inner sealing ring is squeezed during drilling, it also drives the drive ring 74 at its top to move upward. The drive ring 74 and the pressure pipe 73 are elastically connected by a spring. Therefore, when the drive ring 74 moves upward, it first drives the pressure pipe 73 to move upward as a whole, thus squeezing the liquid storage tank 71 through the top of the pressure pipe 73. This causes the cooling water pressure in the liquid storage tank 71 to increase. When the pressure exceeds the elastic force between the drive ring 74 and the pressure pipe 73, the pressure pipe 73 stops moving. At this time, the drive ring 74 drives the injection pipe 75 to continue moving upward, causing the top of the injection pipe 75 to protrude from the pressure pipe 73 and enter the liquid storage tank 71 until the injection hole 76 enters the liquid storage tank 71. At this point, under the influence of pressure... During operation, coolant enters the injection pipe 75 through the injection hole 76 and, under pressure, flows through the bottom of the injection pipe 75 into the drilling location. This automatic coolant injection cools the drill rod 61 during operation. Simultaneously, in conjunction with the drilling mechanism 6, the coolant is sealed by the sealing ring 612, greatly reducing the possibility of coolant leakage. By automatically injecting coolant during drilling, the engine connecting rod and drill rod 61 are cooled, significantly extending the service life of the drill rod 61. The coolant also acts as a lubricant and carries away drilling debris, preventing it from scraping the hole wall and increasing its roughness, thus reducing drilling efficiency.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A device for drilling the oil hole of a motorcycle engine connecting rod, comprising a base (1), characterized in that: The end of the base (1) is fixedly sleeved with a supporting rod (2), the top of the supporting rod (2) is slidably connected with a top base (3), the side of the top base (3) is rotatably connected with a first adjusting rod (4), the side, away from the first adjusting rod (4), of the top base (3) is rotatably connected with a second adjusting rod (5), and the device further comprises: a drilling mechanism (6) is fixedly installed on the bottom surface of the top base (3) near the side of the second adjusting rod (5), and the drilling mechanism (6) is used for drilling the engine connecting rod; a cleaning mechanism (7) is fixedly installed in the drilling mechanism (6), the cleaning mechanism (7) is used for working in cooperation with the drilling mechanism (6), and the cleaning mechanism (7) is used for conveying cooling liquid when the drilling mechanism (6) works; wherein the drilling mechanism (6) comprises a drill rod (61), the top of the drill rod (61) is rotatably connected to the bottom surface of the top base (3) near the side of the second adjusting rod (5), the drill rod (61) is vertically arranged, the middle outer surface of the drill rod (61) is slidably sleeved with a first stabilizing pipe (62), the upper surface of the first stabilizing pipe (62) is slidably connected with a positioning rod (63), the positioning rod (63) is fixedly arranged at an interval of three around the central axis of the first stabilizing pipe (62), the top of the positioning rod (63) is fixedly connected to the bottom surface of the top base (3) near the side of the second adjusting rod (5), the positioning rod (63) is arranged outside the drill rod (61), and the bottom of the positioning rod (63) is slidably inserted with a second stabilizing pipe (64), the second stabilizing pipe (64) is slidably sleeved at the bottom of the drill rod (61).

2. A motorcycle engine connecting rod oil hole drilling apparatus according to claim 1, characterized in that: The bottom of the second stabilizing pipe (64) is fixedly connected with a mounting pipe (65), the outer surface of the mounting pipe (65) is fixedly sleeved with a positioning ring (66), the bottom surface of the positioning ring (66) is fixedly connected with a pressure ring (67), the inner surface of the pressure ring (67) is attached to the outer surface of the mounting pipe (65), and the bottom of the pressure ring (67) protrudes from the bottom of the mounting pipe (65).

3. A motorcycle engine connecting rod oil hole drilling apparatus according to claim 2, characterized in that: The bottom outer surface of the pressure ring (67) is slidably sleeved with a closed outer ring (68), the inner side of the closed outer ring (68) is provided with a closed inner ring (69), the top outer surface of the closed inner ring (69) is slidably connected to the bottom inner surface of the mounting pipe (65), the closed outer ring (68) and the closed inner ring (69) are arranged on the same central axis, and a cavity is arranged between the closed outer ring (68) and the closed inner ring (69).

4. A motorcycle engine connecting rod oil hole drilling apparatus according to claim 3, characterized in that: The bottom surface of the pressure ring (67) is fixedly connected with an extrusion ring (610), the inner and outer sides of the extrusion ring (610) are slidably connected to the outer surface of the closed inner ring (69) and the inner surface of the closed outer ring (68) respectively, the bottom surface of the extrusion ring (610) is fixedly connected with a bellows (611), the bellows (611) is made of elastic rubber material, and the bellows (611) is arranged in the cavity between the closed outer ring (68) and the closed inner ring (69).

5. A motorcycle engine connecting rod oil hole drilling apparatus according to claim 4, characterized in that: The bottom of the bellows (611) is fixedly connected with a sealing ring (612) made of rubber material, the inner and outer sides of the sealing ring (612) are fixedly connected to the bottom outer surface of the closed inner ring (69) and the bottom inner surface of the closed outer ring (68) respectively, and the bottom surface of the sealing ring (612) is at the same horizontal plane as the bottom surfaces of the closed outer ring (68) and the closed inner ring (69).

6. A motorcycle engine connecting rod oil hole drilling apparatus according to claim 5, characterized in that: A cavity is arranged between the bellows (611) and the closed inner ring (69), the upper surface of the extrusion ring (610) is provided with eight pressure relief holes (613) arranged at a fixed interval around the central axis of the extrusion ring (610), the inside of the pressure ring (67) is provided with a gas permeation groove (614), the top of the gas permeation groove (614) is in communication with the outside through a through hole, the bottom of the gas permeation groove (614) is in communication with the top cavity of the extrusion ring (610), the upper surface of the sealing ring (612) is provided with eight negative pressure holes (615) arranged at a fixed interval around the central axis of the sealing ring (612), and the inside of the sealing ring (612) is provided with an expansion groove (616) in communication with the negative pressure holes (615).

7. A motorcycle engine connecting rod oil hole drilling apparatus according to claim 6, characterized in that: The cleaning mechanism (7) comprises a liquid storage tank (71) which is arranged at the bottom of the second stabilizing pipe (64), the bottom of the liquid storage tank (71) is open, the top outer surface of the second stabilizing pipe (64) is symmetrically provided with a liquid inlet hole (72) in communication with the liquid storage tank (71), and the bottom opening of the liquid storage tank (71) is slidably connected with a pressure pipe (73).

8. A motorcycle engine connecting rod oil hole drilling apparatus according to claim 7, characterized in that: The bottom outer surface of the pressure pipe (73) is slidably sleeved with a driving ring (74) through a spring, the upper surface of the driving ring (74) is fixedly connected with a liquid injection pipe (75) penetrating therethrough, the bottom of the liquid injection pipe (75) is hollow, and the top of the liquid injection pipe (75) is closed.

9. A motorcycle engine connecting rod oil hole drilling apparatus according to claim 8, characterized in that: The top side of the liquid injection pipe (75) is provided with a liquid injection hole (76) penetratingly arranged, the liquid injection hole (76) is initially arranged below the top of the pressure pipe (73), and the top of the liquid injection pipe (75) is initially arranged at the same horizontal plane as the upper surface of the pressure pipe (73). The side of the driving ring (74) is fixedly connected to the top inner surface of the closed inner ring (69).

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