Countersink device for gearbox end covers

Abstract

This utility model relates to the field of countersink devices, providing a countersink device for gearbox end covers. The countersink device for gearbox end covers includes a support portion for insertion into a mounting hole in the gearbox end cover; a connecting rod portion, the first end of which is slidably connected to the support portion; and a drive portion, slidably connected to the second end of the connecting rod portion, the output end of which is connected to a cleaning cutter head for cleaning the end face of the hole to be cleaned. This countersink device for gearbox end covers avoids problems such as uneven cleaning or excessive cutting caused by positioning deviations, ensuring the accuracy and quality of the cleaning operation. Operators can easily adjust the working position of the drive portion according to the specific position, depth, and angle of the hole to be cleaned in the gearbox end cover, ensuring that the cleaning cutter head accurately reaches the area to be cleaned. It adapts to the cleaning needs of gearbox end covers of various specifications and structures, expanding the applicability of the device; and it can quickly and effectively clean the end face of the hole to be cleaned, improving cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of countersink devices, and provides a countersink device for gearbox end covers. Background Technology

[0002] During gearbox maintenance, the connection between the gearbox cover and the gearbox body needs to be tightened with bolts to ensure the reliability of equipment operation. Traditional cleaning methods mainly use scrapers and utility knives to remove the topcoat, but because the topcoat adheres firmly to the top of the cover, the cleaning work is time-consuming, labor-intensive, and inefficient.

[0003] Existing methods rely on manual operation, which requires high technical skills from operators, makes it difficult to ensure consistent cleaning quality, and can easily cause scratches on the gearbox surface, affecting the surface roughness of the mounting surface, thus significantly increasing costs and leading to the scrapping of the gearbox. Utility Model Content

[0004] This utility model provides a countersink device for gearbox end covers, which solves the problem of low efficiency in cleaning methods for the holes to be cleaned in gearbox end covers in related technologies.

[0005] This utility model embodiment provides a countersink device for a gearbox end cover, comprising:

[0006] Support portion, for insertion into mounting holes on the gearbox end cover;

[0007] A connecting rod portion, the first end of which is slidably connected to the support portion;

[0008] The drive unit is slidably connected to the second end of the connecting rod, and the output end of the drive unit is connected to a cleaning head for cleaning the end face of the hole to be cleaned.

[0009] According to one embodiment of the present invention, a first slider is fixedly connected to the support portion, and the first slider is slidably connected to the connecting rod portion.

[0010] According to one embodiment of the present invention, a second slider is provided on the driving part, and the second slider is slidably connected to the connecting rod part.

[0011] According to one embodiment of the present invention, along the axial direction of the output end of the driving part, the driving part is adapted to be slidably connected to the second slider via a sliding mechanism, and the sliding direction of the second slider is perpendicular to the sliding direction of the driving part.

[0012] According to one embodiment of the present invention, the sliding mechanism includes:

[0013] A groove is provided in one of the drive unit and the second slider;

[0014] A slide rail is embedded in the slide groove, and the slide rail is disposed in another of the drive unit and the second slider.

[0015] According to one embodiment of the present invention, at least one of the driving part and the second slider is provided with a locking member, and the driving part is adapted to lock its relative position with the second slider by the locking member.

[0016] According to one embodiment of the present invention, the second slider is provided with a snap-fit ​​component, and the driving part is adapted to be detachably mounted on the second slider via the snap-fit ​​component.

[0017] According to one embodiment of the present invention, the output end of the drive unit is connected to a transition shaft, and the cleaning blade is detachably mounted on the transition shaft.

[0018] According to one embodiment of the present invention, a positioning bearing is connected to one end of the transition shaft away from the output end of the drive unit, and the positioning bearing is used to position the hole to be cleaned.

[0019] According to one embodiment of the present invention, the cleaning blade includes:

[0020] A connecting segment, which is detachably mounted to the transition shaft;

[0021] The cutter head body comprises multiple cutter head bodies, which are spaced apart circumferentially along the connecting segment. The front angle of each cutter head body is 0 degrees, and the rear angle of each cutter head body is 1 degree.

[0022] According to the embodiments of this utility model, the countersink device for gearbox end covers features a precise insertion and tight fit between the support part and the mounting hole of the gearbox end cover, providing stable support and accurate positioning reference for the device. This allows the cleaning head to accurately align with the end face of the hole to be cleaned during operation, avoiding problems such as uneven cleaning or excessive cutting caused by positioning deviations, thus ensuring the accuracy and quality of the cleaning operation. The slidable connection design between the connecting rod and the support part, and between the drive part and the connecting rod part, allows the drive part to be flexibly adjusted in multiple directions. Operators can easily adjust the working position of the drive part according to the specific position, depth, and angle of the hole to be cleaned on the gearbox end cover, ensuring that the cleaning head can accurately reach the area to be cleaned. This flexible adjustment capability allows the device to adapt to the cleaning needs of gearbox end covers of various specifications and structures, expanding the applicability of the device. The drive part drives the cleaning head to rotate, which can quickly and effectively remove impurities such as burrs, flash, and oxide layers from the end face of the hole to be cleaned. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic perspective view of one angle of the countersink device for the gearbox end cover provided by this utility model.

[0025] Figure 2 This is a schematic three-dimensional representation of the countersink device for the gearbox end cover provided by this utility model from another angle.

[0026] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0027] Figure label:

[0028] 100. Support unit; 102. Connecting rod unit; 104. Drive unit; 106. Cleaning cutter head; 108. First slider; 110. Second slider; 112. Slide groove; 114. Slide rail; 116. Snap-fit ​​component; 118. Transition shaft; 120. Positioning bearing; 122. Connecting section; 124. Cutter head body. Detailed Implementation

[0029] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0030] like Figures 1 to 3 As shown, this utility model embodiment provides a countersink device for a gearbox end cover, comprising:

[0031] Support 100 is used to insert into the mounting hole of the gearbox end cover;

[0032] The first end of the connecting rod portion 102 is slidably connected to the support portion 100;

[0033] The drive unit 104 is slidably connected to the second end of the connecting rod 102, and the output end of the drive unit 104 is connected to a cleaning head 106 for cleaning the end face of the hole to be cleaned.

[0034] According to the embodiment of this utility model, the countersink device for gearbox end covers, with its support 100 precisely inserted and tightly fitted into the mounting hole of the gearbox end cover, provides stable support and a precise positioning reference for the device. This allows the cleaning head 106 to accurately align with the end face of the hole to be cleaned during operation, avoiding problems such as uneven cleaning or excessive cutting caused by positioning deviations, thus ensuring the accuracy and quality of the cleaning operation. The slidable connection design between the connecting rod 102 and the support 100, and between the drive 104 and the connecting rod 102, allows the drive 104 to be flexibly adjusted in multiple directions. The operator can easily adjust the working position of the drive 104 according to the specific position, depth, and angle of the hole to be cleaned on the gearbox end cover, ensuring that the cleaning head 106 can accurately reach the area to be cleaned. This flexible adjustment capability allows the device to adapt to the cleaning needs of gearbox end covers of various specifications and structures, expanding the applicability of the device. The drive 104 drives the cleaning head 106 to rotate, which can quickly and effectively clean impurities such as burrs, flash, and oxide layers from the end face of the hole to be cleaned.

[0035] Please continue reading Figures 1 to 3 The countersink device for gearbox end caps provided in this embodiment of the utility model mainly consists of three parts: a support part 100, a connecting rod part 102, and a drive part 104. Each part is connected by a precision mechanical connection to achieve efficient cleaning of the end face of the hole to be cleaned on the gearbox end cap.

[0036] The support part 100 serves as the basic positioning component of the device. Its shape is designed as a columnar structure that fits precisely into the mounting holes of the gearbox end cover. The outer wall of the support part 100 forms a tight fit with the inner wall of the mounting hole, providing stable support and positioning reference for the entire device and ensuring the accuracy of subsequent cleaning operations. An axially extending sliding channel is provided inside the support part 100 for connection with the connecting rod part 102, allowing the connecting rod part 102 to slide axially within the support part 100.

[0037] The first end of the connecting rod 102 is slidably connected to the sliding channel of the support 100, achieving flexible axial movement through a linear sliding pair. This connection method allows the connecting rod 102 to slide freely within the support 100 while maintaining good guidance, ensuring accurate movement trajectory of the connecting rod 102. The second end of the connecting rod 102 is slidably connected to the drive 104, allowing the drive 104 to slide axially relative to the connecting rod 102, further increasing the range of motion and adjustment flexibility of the device. The connecting rod 102 plays the role of transmitting power and adjusting the position of the drive 104 in the device. Through its sliding connection characteristics, the working position of the drive 104 can be precisely adjusted according to the position and depth of the hole to be cleaned.

[0038] The drive unit 104 is slidably connected to the second end of the connecting rod 102, and a cleaning head 106 is mounted on its output end. The drive unit 104 contains a power mechanism that drives the cleaning head 106 to rotate at high speed, achieving the cleaning operation on the end face of the hole to be cleaned. The cleaning head 106 is designed with different shapes and specifications according to actual cleaning needs, and can effectively clean burrs, flash, oxide layers, etc., on the end face of the hole. When the drive unit 104 is adjusted to a suitable position under the drive of the connecting rod 102, the power mechanism drives the cleaning head 106 to rotate, cutting or grinding the end face of the hole, thereby achieving the cleaning purpose.

[0039] According to one embodiment of the present invention, a first slider 108 is fixedly connected to the support portion 100, and the first slider 108 is slidably connected to the connecting rod portion 102.

[0040] In one embodiment of this utility model, a first slider 108 is fixedly connected to the outer wall of the support portion 100. The first slider 108 is a rectangular block structure, and its length direction is consistent with the axial direction of the support portion 100. A groove 112 adapted to the first slider 108 is provided at the first end of the connecting rod portion 102. The groove 112 has a rectangular cross-section, and the first slider 108 is slidably embedded in the groove 112. The clearance between the first slider 108 and the groove 112 is controlled between 0.01-0.03 mm to ensure that the first slider 108 can slide smoothly within the groove 112 while maintaining good guidance. Through the sliding connection between the first slider 108 and the connecting rod portion 102, the axial sliding function of the connecting rod portion 102 relative to the support portion 100 is realized.

[0041] The precise fit between the first slider 108 and the groove 112 of the connecting rod 102 provides accurate guidance for the sliding of the connecting rod 102, ensuring that the connecting rod 102 does not deviate or wobble when sliding on the support 100. This guarantees the accurate movement trajectory of the drive unit 104 and its cleaning head 106, thereby improving the precision of the cleaning operation. The slidable connection between the first slider 108 and the connecting rod 102 allows the connecting rod 102 to flexibly adjust its extension length on the support 100 according to the depth and position of the hole to be cleaned. This facilitates the operator in accurately moving the cleaning head 106 to the area to be cleaned, improving the applicability and ease of operation of the device.

[0042] According to one embodiment of the present invention, a second slider 110 is provided on the drive unit 104, and the second slider 110 is slidably connected to the connecting rod unit 102.

[0043] In one embodiment of this utility model, a second slider 110 is provided on the outer wall of the drive unit 104. The second slider 110 is T-shaped, with its horizontal portion fixed to the drive unit 104 and its vertical portion slidably connected to the connecting rod portion 102. A T-shaped groove adapted to the vertical portion of the second slider 110 is provided at the second end of the connecting rod portion 102. The vertical portion of the second slider 110 is embedded in the T-shaped groove and can slide along it. The fit between the second slider 110 and the T-shaped groove of the connecting rod portion 102 is a clearance fit with a clearance of 0.02-0.04 mm, ensuring that the drive unit 104 slides flexibly and stably on the connecting rod portion 102.

[0044] The sliding connection between the second slider 110 and the connecting rod 102 allows the drive unit 104 to not only move axially along the support 100 with the connecting rod 102, but also slide within a certain range at the second end of the connecting rod 102. This increases the adjustment range of the drive unit 104, enabling the cleaning head 106 to more accurately align with the holes to be cleaned at different positions, thus improving the operational flexibility of the device. The mating structure of the T-slot and the T-slider has strong resistance to lateral forces, ensuring that the drive unit 104 is stably connected to the connecting rod 102 during sliding, preventing it from easily falling off or shaking due to external forces, thus ensuring the stability and reliability of the cleaning operation.

[0045] According to one embodiment of the present invention, along the axial direction of the output end of the drive unit 104, the drive unit 104 is adapted to be slidably connected to the second slider 110 via a sliding mechanism, and the sliding direction of the second slider 110 is perpendicular to the sliding direction of the drive unit 104.

[0046] In one embodiment of this utility model, the output axis of the drive unit 104 is vertical. The drive unit 104 is connected to the second slider 110 via a sliding mechanism to achieve vertical sliding. The second slider 110 slides horizontally on the connecting rod 102, and the sliding directions of the two are perpendicular to each other, forming a cross sliding structure. The sliding mechanism includes a vertical groove 112 on the second slider 110 and a vertical slide rail 114 on the drive unit 104. The vertical slide rail 114 is embedded in the vertical groove 112, and the drive unit 104 can slide up and down along the vertical groove 112. At the same time, the second slider 110 can slide left and right in the horizontal T-shaped groove of the connecting rod 102, thereby realizing the sliding adjustment of the drive unit 104 in two mutually perpendicular directions, horizontal and vertical.

[0047] The cross-sliding structure between the drive unit 104 and the second slider 110 allows the drive unit 104 to be independently adjusted in both horizontal and vertical directions, achieving precise positioning of the cleaning head 106 in a two-dimensional plane. This enables accurate alignment with holes of different positions and depths, significantly improving the positioning accuracy and applicability of the device. Through sliding adjustments in two mutually perpendicular directions, the device can flexibly adapt to various complexly distributed holes on the gearbox end cover. Even if the location of the hole is tricky, adjusting the position of the drive unit 104 will ensure that the cleaning head 106 accurately reaches the working position, improving the device's adaptability to various working conditions.

[0048] According to one embodiment of the present invention, the sliding mechanism includes:

[0049] Slide 112 is provided in one of the drive unit 104 and the second slider 110;

[0050] The slide rail 114 is embedded in the slide groove 112, and the slide rail 114 is another one of the drive part 104 and the second slider 110.

[0051] In one embodiment of this utility model, the sliding mechanism adopts a mating structure of a groove 112 and a slide rail 114. Specifically, a vertical groove 112 is formed on the inner sidewall of the second slider 110, and the cross-section of the groove 112 is rectangular. A slide rail 114 adapted to the groove 112 is fixedly connected to the outer sidewall of the drive unit 104. The slide rail 114 is embedded in the groove 112, and the two form a sliding pair. The length of the groove 112 is determined according to the stroke that the drive unit 104 needs to adjust, and is generally 20-50mm, to meet the adjustment requirements of holes to be cleaned at different depths. The mating surfaces of the slide rail 114 and the groove 112 are ground to reduce sliding resistance and improve sliding smoothness.

[0052] The precise fit between the slide groove 112 and the slide rail 114, along with the surface grinding treatment, results in low resistance during the sliding process of the drive unit 104. This allows operators to easily adjust the position of the drive unit 104, improving operational convenience and efficiency. The sliding mechanism of the slide groove 112 and the slide rail 114 has a simple structure, mature manufacturing process, and is easy to process and assemble. It also possesses high reliability and stability, ensuring that the drive unit 104 maintains good sliding performance during long-term use and reducing the probability of malfunctions.

[0053] According to one embodiment of the present invention, at least one of the driving part 104 and the second slider 110 is provided with a locking member, and the driving part 104 is adapted to lock its relative position with the second slider 110 by means of the locking member.

[0054] In one embodiment of this utility model, a locking member, namely a locking bolt, is provided on the second slider 110. A threaded hole is provided on the outer side wall of the second slider 110, which communicates with the slide groove 112. The locking bolt passes through the threaded hole and abuts against the side of the slide rail 114. After the drive unit 104 is adjusted to a suitable position, the locking bolt is tightened. The abutting force of the locking bolt against the slide rail 114 locks the relative position of the drive unit 104 and the second slider 110, preventing the drive unit 104 from sliding during operation.

[0055] The locking mechanism securely locks the drive unit 104 to the second slider 110 after the drive unit 104 is adjusted to the appropriate position. This prevents the drive unit 104 from sliding due to vibration or other factors during cleaning operations, ensuring the stability of the cleaning head 106 and thus guaranteeing the accuracy and quality of the cleaning operation. The locking mechanism is simple and quick to operate; operators only need to tighten the locking bolts to lock and unlock the drive unit 104, eliminating the need for complex tools and improving work efficiency. It also facilitates quick fixation of the drive unit 104 when adjusting to different positions.

[0056] According to one embodiment of the present invention, a snap-fit ​​member 116 is provided on the second slider 110, and the drive unit 104 is adapted to be detachably mounted on the second slider 110 via the snap-fit ​​member 116.

[0057] In one embodiment of this utility model, a snap-fit ​​member 116 is provided on the second slider 110. The snap-fit ​​member 116 includes a snap-fit ​​protrusion fixed on the second slider 110 and a snap-fit ​​groove provided on the drive part 104. The snap-fit ​​protrusion is inverted L-shaped, and the snap-fit ​​groove is adapted to the snap-fit ​​protrusion. During installation, the snap-fit ​​groove on the drive part 104 is aligned with the snap-fit ​​protrusion on the second slider 110, and then the drive part 104 is pressed down to make the snap-fit ​​protrusion snap into the snap-fit ​​groove, thereby realizing the snap-fit ​​installation of the drive part 104 and the second slider 110. The snap-fit ​​member 116 is also provided with an unlocking button. Pressing the unlocking button can separate the snap-fit ​​protrusion from the snap-fit ​​groove, thereby realizing the disassembly of the drive part 104.

[0058] The snap-fit ​​connector 116 makes the installation and removal of the drive unit 104 and the second slider 110 simple and quick, without the need for tools. Operators can complete the replacement or repair of the drive unit 104 in a short time, improving equipment maintenance efficiency and reducing downtime. The engaging structure of the snap-fit ​​protrusion and snap-fit ​​groove has a certain locking force, ensuring that the drive unit 104 will not easily fall off during operation. At the same time, it can be easily disassembled by the unlocking button when subjected to greater external force, thus balancing the reliability of the connection and the convenience of disassembly.

[0059] According to one embodiment of the present invention, the output end of the drive unit 104 is connected to a transition shaft 118, and the cleaning head 106 is detachably mounted on the transition shaft 118.

[0060] In one embodiment of this utility model, the output end of the drive unit 104 is connected to a transition shaft 118 via a coupling. The transition shaft 118 is a cylindrical shaft, one end of which is fixedly connected to the output shaft of the drive unit 104, and the other end is used to install the cleaning head 106. An external thread is provided on the outer circumferential surface of the transition shaft 118, and an internal thread adapted to the external thread is provided in the connecting section 122 of the cleaning head 106. The cleaning head 106 and the transition shaft 118 can be detachably installed through the threaded connection.

[0061] The detachable connection between the transition shaft 118 and the cleaning head 106 allows operators to quickly change to different types of cleaning heads 106, such as flat countersinks and conical countersinks, to meet various cleaning needs. This improves the versatility and adaptability of the device and satisfies diverse cleaning operation requirements. The high-precision coaxiality design between the transition shaft 118 and the output shaft of the drive unit 104 ensures that the power from the drive unit 104 is accurately transmitted to the cleaning head 106, avoiding head vibration or eccentric cutting caused by coaxiality deviations, thus guaranteeing the accuracy of the cleaning operation and the service life of the cleaning head.

[0062] According to one embodiment of the present invention, a positioning bearing 120 is connected to one end of the transition shaft 118 away from the output end of the drive unit 104. The positioning bearing 120 is used to position the hole to be cleaned.

[0063] In one embodiment of this utility model, one end of the transition shaft 118 away from the output end of the drive unit 104 is connected to a positioning bearing 120 via a bearing housing. The positioning bearing 120 is a deep groove ball bearing, with its outer ring contacting the inner wall of the hole to be cleaned, and its inner ring fixed on the bearing housing. The bearing housing is fixedly connected to the transition shaft 118. The outer diameter of the positioning bearing 120 is matched with the inner diameter of the hole to be cleaned, generally using a clearance fit, to ensure that the positioning bearing 120 can rotate smoothly within the hole to be cleaned, while also serving a positioning function.

[0064] The positioning bearing 120, in conjunction with the hole to be cleaned, provides a precise positioning reference for the cleaning cutter head 106, ensuring that the axis of the cleaning cutter head 106 is coaxial with the axis of the hole to be cleaned. This guarantees the accuracy of the cleaning operation, resulting in a smoother hole end face and lower surface roughness after cleaning. The positioning bearing 120 supports the transition shaft 118 and the cleaning cutter head 106, reducing vibration of the cutter head during the cleaning operation and improving the stability of the cutting process. This not only improves the cleaning quality but also extends the service life of the cleaning cutter head 106.

[0065] According to one embodiment of the present invention, the cleaning blade 106 includes:

[0066] Connecting section 122 is detachably mounted on transition shaft 118;

[0067] The cutter head body 124 is a plurality of cutter head bodies 124, which are arranged at intervals along the circumference of the connecting section 122, and the front angle of the cutter head body 124 is 0 degrees and the rear angle of the cutter head body 124 is 1 degree.

[0068] In one embodiment of this utility model, the cleaning head 106 consists of a connecting section 122 and multiple head bodies 124. The connecting section 122 is cylindrical, with one end connected to the transition shaft 118 via a thread, and the other end fixedly connected to the head body 124. Multiple head bodies 124 are evenly spaced along the circumference of the connecting section 122, typically 3-6 in number, and are made of cemented carbide. The rake angle of the head body 124 is designed to be 0 degrees, and the clearance angle is 1 degree; both the rake and clearance faces are precision ground. The cutting edges of the head body 124 are sharp, effectively cleaning burrs, flash, and oxide layers from the end face of the hole to be cleaned.

[0069] Multiple cutter heads 124 are spaced circumferentially, increasing the cutting area and improving cleaning efficiency. The 0-degree rake angle and 1-degree clearance angle design give the cutter heads 124 good cutting performance during cutting, ensuring sufficient cutting force while reducing cutting resistance and heat, thus improving cleaning effect and cutter head lifespan. The high-precision grinding and reasonable angle design of the cutter heads 124 ensure that the surface roughness of the cleaned hole end face meets the assembly requirements of the gearbox end cover, avoiding problems such as poor sealing caused by excessive surface roughness, and improving the reliability and service life of the gearbox.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A swage device for a gear box end cover, characterised in that, include: Support (100) for insertion into the mounting hole of the gearbox end cover; Linkage (102), the first end of which is slidably connected to the support (100). The drive unit (104) is slidably connected to the second end of the connecting rod unit (102), and the output end of the drive unit (104) is connected to a cleaning head (106) for cleaning the end face of the hole to be cleaned.

2. A counterflashing device for a gear box end cover as defined in claim 1, wherein, A first slider (108) is fixedly connected to the support part (100), and the first slider (108) is slidably connected to the connecting rod part (102).

3. A counter sinking device for a gear box end cover as claimed in claim 1, wherein, The drive unit (104) is provided with a second slider (110), which is slidably connected to the connecting rod unit (102).

4. A counter sinking device for a gearbox end cover as claimed in claim 3, wherein, Along the axial direction of the output end of the drive unit (104), the drive unit (104) is adapted to be slidably connected to the second slider (110) via a sliding mechanism, and the sliding direction of the second slider (110) is perpendicular to the sliding direction of the drive unit (104).

5. A counterflashing device for a gear box end cover as defined in claim 4, wherein, The sliding mechanism includes: A groove (112) is provided in one of the drive unit (104) and the second slider (110); A slide rail (114) is embedded in the slide groove (112), and the slide rail (114) is disposed in the other of the drive unit (104) and the second slider (110).

6. A counterflashing device for a gear box end cover as defined in claim 5, wherein, At least one of the drive unit (104) and the second slider (110) is provided with a locking member, and the drive unit (104) is adapted to lock its relative position with the second slider (110) by the locking member.

7. A counter sinking device for a gear box end cover as claimed in claim 3, wherein, The second slider (110) is provided with a snap-fit ​​member (116), and the drive unit (104) is adapted to be detachably mounted on the second slider (110) via the snap-fit ​​member (116).

8. A counterflashing device for a gear box end cover according to any one of claims 1 to 7, characterized in that The output end of the drive unit (104) is connected to a transition shaft (118), and the cleaning head (106) is detachably mounted on the transition shaft (118).

9. A counterflashing device for a gear box end cover as defined in claim 8, wherein, The end of the transition shaft (118) opposite to the output end of the drive unit (104) is connected to a positioning bearing (120), which is used to position the hole to be cleaned.

10. A counter sinking device for a gear box end cover as claimed in claim 8, wherein, The cleaning head (106) includes: Connecting segment (122), which is detachably mounted on the transition shaft (118); The cutter head body (124) is a plurality of cutter head bodies (124), which are arranged circumferentially along the connecting section (122), and the front angle of the cutter head body (124) is 0 degrees and the rear angle of the cutter head body (124) is 1 degree.

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