High-stability hole drilling machine

Abstract

The application discloses a high-stability hole drilling machine, which comprises a machine body, two driving members, two transmission devices, two inner clamping devices, two outer clamping devices and a drilling device, the inner clamping devices and the outer clamping devices are adjustable, the driving members are used for driving the inner clamping devices to adjust, the transmission devices are used for driving the outer clamping devices to adjust, the inner clamping devices comprise a plurality of rollers, a plurality of first gears and a plurality of connecting rods, and the connecting rods are fixedly connected with the corresponding rollers and the first gears at two ends respectively. The application has the effect of improving the stability of the tubular workpiece in the machining process, so that the machining precision of the hole drilling machine on the tubular workpiece is improved.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and in particular to a highly stable drilling machine. Background Technology

[0002] When processing raw materials such as steel pipes, drilling is often required due to assembly needs or functional requirements such as ventilation and drainage. The equipment used in the processing is a drilling machine, also known as a hole drill. It is a device that uses a tool that is harder and sharper than the workpiece to drill holes in the workpiece through rotary cutting or rotary extrusion.

[0003] For related technology, please refer to Chinese Patent Publication No. CN112775458A, which discloses a semi-automatic pipe double-sided drilling machine, including a support frame. A drive assembly is set in the middle of the support frame. The drive assembly consists of two support seats, two electric slide rails and a support plate. Two fixing components are set on the top of the support plate. A drilling assembly is set on the top of each of the two support seats. The fixing components consist of a fixing frame, a hydraulic cylinder, an upper clamp and a lower clamp. The drilling assembly consists of a motor frame, a servo motor and a drill bit.

[0004] Regarding the aforementioned technologies, the pipe fittings are fixed by two fixing components during the processing. The upper clamp and the lower clamp clamp the pipe fitting from above and below, respectively. The fixing components only clamp the outside of the pipe fitting. During the processing of the pipe fittings, the pipe fittings are still prone to displacement or rotation, resulting in a decrease in the processing accuracy of the pipe fittings. Summary of the Invention

[0005] In order to improve the stability of tubular workpieces during processing and thus improve the accuracy of drilling machines in processing tubular workpieces, this application provides a high-stability drilling machine.

[0006] This application provides a highly stable hole-drilling machine, which adopts the following technical solution:

[0007] A high-stability drilling machine includes a body, which is equipped with two driving components, two transmission devices, two inner clamping devices, two outer clamping devices, and a drilling device. Both the inner and outer clamping devices are adjustable. The driving components are used to drive the inner clamping devices for adjustment, and the transmission devices are used to drive the outer clamping devices for adjustment. The inner clamping devices include several rollers, several first gears, and several connecting rods. The two ends of the connecting rods are fixedly connected to the corresponding rollers and first gears, respectively.

[0008] By adopting the above technical solution, two inner clamping devices and two outer clamping devices clamp the two ends of the tubular workpiece respectively. The inner clamping device and the outer clamping device at the same end of the tubular workpiece are driven by the same driving component. The operation of the driving component causes the inner clamping device to be adjusted, and at the same time, the outer clamping device is driven to be adjusted via the transmission device. The outer clamping device and the inner clamping device cooperate with each other to apply force to the inner and outer walls of the tubular workpiece simultaneously, so that the clamping force on the tubular workpiece is greater, and the tubular workpiece is more stable during the drilling process of the drilling device, which is conducive to improving the processing accuracy of the drilling machine on the tubular workpiece.

[0009] Optionally, the external clamping device includes a first synchronous wheel, a plurality of second synchronous wheels, a synchronization device, a rotating wheel, an arc-shaped plate, a fixed rod, and an elastic telescopic rod. The first synchronous wheel and the second synchronous wheels are both located in the synchronization device. The first synchronous wheel and the second synchronous wheel are both fixedly connected to the corresponding fixed rod. The other end of the fixed rod is fixedly connected to the corresponding rotating wheel. One end of the elastic telescopic rod is fixedly connected to the rotating wheel, and the other end of the elastic telescopic rod is rotatably connected to the arc-shaped plate.

[0010] By adopting the above technical solution, the transmission device drives the first synchronous wheel to rotate, and through the synchronization device, all the second synchronous wheels rotate, thereby driving the fixed rod and the rotating wheel to rotate with the first and second synchronous wheels. The elastic telescopic rod and the arc plate move with the rotating wheel, so that the arc plate abuts against the outer wall of the tubular workpiece, and the arc plate clamps the outer wall of the tubular workpiece.

[0011] Optionally, a limiting block is fixedly connected to one end of the elastic telescopic rod near the arc-shaped plate, and the limiting block is located on the side of the arc-shaped plate away from the inner clamping device.

[0012] By adopting the above technical solution, the limiting block limits the arc plate, so that the arc plate can only rotate towards the side closer to the inner clamping device, ensuring that when the arc plate contacts the outer wall of the tubular workpiece, the concave surface of the arc plate faces the tubular workpiece, thereby ensuring the clamping effect of the arc plate on the tubular workpiece.

[0013] Optionally, the rotation point of the elastic telescopic rod and the arc plate is located at the eccentric position of the arc plate.

[0014] By adopting the above technical solution, the rotation point is located at the eccentric position of the arc plate, so that the end of the arc plate that is farther away from the rotation point first contacts the outer wall of the tubular workpiece, further ensuring that the concave surface of the arc plate contacts the tubular workpiece.

[0015] Optionally, the transmission device includes a first drive gear, a second drive gear, and a transmission rod. The drive component is fixedly connected to the first drive gear, and the first synchronous pulley and the second drive gear are coaxially arranged with the transmission rod. A plurality of transmission gears are provided between the first drive gear and the second drive gear.

[0016] By adopting the above technical solution, the driving component drives the first driving gear to rotate, and the first driving gear drives the second driving gear to rotate via the transmission gear, thereby driving the transmission rod and the first synchronous wheel to rotate, so that the driving component can simultaneously drive the inner clamping device and the outer clamping device to make adjustments.

[0017] Optionally, the transmission device further includes a moving part and a locking disc. The moving part is rotatably connected to the second drive gear, and the locking disc is disposed between the moving part and the second drive gear. The locking disc has a locking groove adapted to the second drive gear.

[0018] By adopting the above technical solution, the moving part drives the transmission rod to move, so that the second drive gear enters the locking groove. The locking plate limits the second drive gear, so that the transmission rod will not rotate, thereby ensuring the clamping effect of the outer clamping device. At the same time, the outer clamping device remains unchanged, and the driving part adjusts the inner clamping device separately, so that the inner clamping device and the outer clamping device can adapt to more types of tubular workpieces.

[0019] Optionally, the drilling device includes a drilling assembly and a rotary drum. The drilling assembly is slidably connected to the rotary drum along the radial direction. A sliding plate is slidably connected to the machine body, and the rotary drum is disposed on the sliding plate.

[0020] By adopting the above technical solution, the rotating drum and the workpiece are set coaxially, and the drilling assembly moves along the radial direction of the rotating drum, which can perform the machining process of holes opened along the radial direction of the workpiece. The sliding plate drives the drilling device to move along the length direction of the tubular workpiece, and drills holes at different positions of the tubular workpiece.

[0021] Optionally, the machine body is provided with a rotating component, a drive gear is slidably connected to the rotating component, a limit strip is fixedly connected to the rotating component, the drive gear is slidably connected to the limit strip, a tooth that meshes with the drive gear is fixedly connected to the outside of the rotating drum, two limit rings are fixedly connected to the rotating drum, and the drive gear is located between the two limit rings.

[0022] By adopting the above technical solution, the rotating component drives the drive gear to rotate, which in turn causes the drum to rotate, allowing the drilling assembly to rotate around the tubular workpiece and drill holes at different positions on different generatrices of the tubular workpiece.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up an external clamping device and an internal clamping device, when processing tubular workpieces, the external clamping device and the internal clamping device cooperate with each other to apply force to the outer wall and the inner wall of the tubular workpiece at the same time, so that the inner wall and the outer wall at both ends of the tubular workpiece are clamped at the same time, which improves the stability of the tubular workpiece during processing, and thus improves the accuracy of the drilling machine in processing tubular workpieces.

[0025] 2. By setting up a moving part and a locking plate, the outer clamping device can be locked, and the driving part can adjust the inner clamping device separately, so that the inner clamping device and the outer clamping device can adapt to more types of tubular workpieces.

[0026] 3. By setting up a rotating drum and rotating components, the drilling assembly can rotate around the workpiece, allowing the drilling machine to perform drilling operations at different generatrices of the tubular workpiece without rotating the workpiece. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a highly stable drilling machine.

[0028] Figure 2 This is a partial structural diagram of a highly stable drilling machine.

[0029] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0030] Explanation of reference numerals in the attached drawings: 1. Body; 2. Drive component; 3. Transmission device; 31. First drive gear; 32. Second drive gear; 34. Transmission rod; 35. Transmission gear; 36. Moving component; 37. Locking disc; 4. Inner clamping device; 41. Roller; 42. First gear; 43. Connecting rod; 5. Outer clamping device; 51. First synchronous pulley; 52. Second synchronous pulley; 53. Synchronization device; 54. Rotating wheel; 55. Arc plate; 56. Fixed rod; 57. Elastic telescopic rod; 58. Limiting block; 6. Drilling device; 61. Drilling assembly; 62. Rotary drum; 63. Moving seat; 64. Rotating component; 65. Drive gear; 66. Limiting strip; 67. Limiting ring. Detailed Implementation

[0031] The present application will be further described in detail below with reference to all the accompanying drawings.

[0032] This application discloses a highly stable drilling machine. Example

[0033] Reference Figure 1 and Figure 2 A high-stability drilling machine includes a body 1. The body 1 is provided with two driving components 2, two transmission devices 3, two inner clamping devices 4, two outer clamping devices 5, and a drilling device 6. The body 1 is provided with two movable frames, which are slidably connected to the body 1. The two inner clamping devices 4 are respectively disposed on the two movable frames, and the two outer clamping devices 5 are respectively disposed on the two movable frames. The body 1 is slidably connected to a movable seat 63, and the drilling device 6 is disposed on the movable seat 63. The two inner clamping devices 4, the two outer clamping devices 5, and the drilling device 6 can all move along the length direction of the body 1.

[0034] Reference Figure 1 and Figure 2 In the initial state, the distance between the two moving frames is greater than the length of the tubular workpiece, and the distance between the inner clamping device 4 and the outer clamping device 5 located at the same end of the machine body 1 is greater than the wall thickness of the tubular workpiece. The operator places one end of the tubular workpiece on the outer clamping device 5 at one end of the machine body 1, so that the inner clamping device 4 on the same side is inserted into the interior of the tubular workpiece. Then, the moving frame and the moving seat 63 are moved so that the tubular workpiece is located inside the drilling device 6, and the other end of the tubular workpiece is placed on the outer clamping device 5 at the other end of the machine body 1.

[0035] Reference Figure 1 and Figure 2 Both the inner clamping device 4 and the outer clamping device 5 are adjustable. The driving component 2 is used to drive the inner clamping device 4 for adjustment, and the transmission device 3 is used to drive the outer clamping device 5 for adjustment. The operator starts the two driving components 2 to adjust the outer clamping device 5 and the inner clamping device 4 at both ends of the machine body 1. The inner clamping device 4 exerts a force away from the center on the inner wall of the tubular workpiece, and the outer clamping device 5 exerts a force towards the center on the tubular workpiece. The inner clamping device 4 and the outer clamping device 5 clamp the inner and outer walls of the tubular workpiece respectively, which helps to improve the stability of the tubular workpiece during the working process, thereby improving the accuracy of the drilling machine in processing tubular workpieces.

[0036] Reference Figure 1 and Figure 2 Since the driving adjustment processes of the driving components 2, transmission devices 3, inner clamping devices 4 and outer clamping devices 5 at both ends are completely identical, the explanation will focus on the driving components 2, transmission devices 3, inner clamping devices 4 and outer clamping devices 5 on one side.

[0037] Reference Figure 2 and Figure 3 The driving component 2 consists of a drive motor and a rotating gear. The internal clamping device 4 includes a roller 41, several first gears 42, and several connecting rods 43. The drive motor is fixedly connected to the moving frame, and the output shaft of the drive motor is fixedly connected to the rotating gear. All the first gears 42 mesh with the rotating gear. The drive motor drives the rotating gear to rotate, which in turn drives all the first gears 42 to rotate. The two ends of the connecting rods 43 are fixedly connected to the corresponding rollers 41 and first gears 42, respectively. The rotation of the first gears 42 drives the corresponding connecting rods 43 and rollers 41 to rotate, thereby adjusting the distance between the center of the rollers 41 and the rotating gears.

[0038] Reference Figure 1 and Figure 3The external clamping device 5 includes a first synchronous pulley 51, several second synchronous pulleys 52, a synchronization device 53, a rotating wheel 54, an arc plate 55, a fixed rod 56, and an elastic telescopic rod 57. The first synchronous pulley 51 and all the second synchronous pulleys 52 are located in the synchronization device 53. The synchronization device 53 is an annular cylinder and a synchronization belt. The first synchronous pulley 51 and all the second synchronous pulleys 52 are rotatably connected to the annular cylinder. The first synchronous pulley 51 and all the second synchronous pulleys 52 are located in the synchronization belt. When the first synchronous pulley 51 rotates, it drives the synchronization belt to rotate, thereby causing all the second synchronous pulleys 52 to rotate.

[0039] Reference Figure 1 and Figure 3 Both the first synchronous pulley 51 and the second synchronous pulley 52 are fixedly connected to the corresponding fixed rod 56. The other end of the fixed rod 56 is fixedly connected to the corresponding rotating wheel 54. One end of the elastic telescopic rod 57 is fixedly connected to the rotating wheel 54, and the other end of the elastic telescopic rod 57 is rotatably connected to the arc plate 55. When the first synchronous pulley 51 and the second synchronous pulley 52 rotate, the fixed rod 56 and the rotating wheel 54 rotate together, causing the elastic telescopic rod 57 and the arc plate 55 to rotate.

[0040] Reference Figure 1 and Figure 3 When one end of the arc plate 55 comes into contact with the outer wall of the tubular workpiece, the first synchronous wheel 51 and the second synchronous wheel 52 rotate further, causing the outer wall of the tubular workpiece to push the arc plate 55 and the elastic telescopic rod 57 to rotate relative to each other. The arc plate 55 fits against the outer wall of the tubular workpiece, so that the arc plate 55 clamps the outer wall of the tubular workpiece.

[0041] Reference Figure 1 and Figure 3 The rotation point of the elastic telescopic rod 57 and the arc plate 55 is located at the eccentric position of the arc plate 55. During the rotation, due to gravity, the end of the arc plate 55 away from the rotation point first contacts the outer wall of the tubular workpiece. The end of the elastic telescopic rod 57 near the arc plate 55 is fixedly connected to the limiting block 58. The limiting block 58 is located on the side of the arc plate 55 away from the inner clamping device 4, so that the concave surface of the arc plate 55 faces the tubular workpiece. This ensures that during the adjustment of the outer clamping device 5, the concave surface of the arc plate 55 faces the tubular workpiece, and finally the concave surface of the arc plate 55 clamps the tubular workpiece.

[0042] Reference Figure 1 and Figure 3A pressure sensor is installed at the end of the arc plate 55 near the rotation point. When the operator places the tubular workpiece, due to gravity, the tubular workpiece first comes into contact with the arc plate 55 at the lower end of the outer clamping device 5. At this time, the arc plate 55 at the upper end of the outer clamping device 5 does not come into contact with the tubular workpiece. When the outer clamping device 5 is adjusted, the arc plate 55 at the lower end rotates, lifting the tubular workpiece upward, so that the upper end of the tubular workpiece comes into contact with the arc plate 55 at the upper end of the outer clamping device 5. The end of the arc plate 55 away from the rotation point first comes into contact with the outer wall of the tubular workpiece. When the arc plate 55 is in contact with the outer wall of the tubular workpiece, the end of the arc plate 55 near the rotation point is subjected to force, and the reading of the pressure sensor is not zero at this time.

[0043] Reference Figure 1 and Figure 2 The transmission device 3 includes a first drive gear 31, a second drive gear 32, and a transmission rod 34. The drive component 2 is fixedly connected to the first drive gear 31, that is, the output shaft of the drive motor is fixedly connected to the first drive gear 31. Several transmission gears 35 are provided between the first drive gear 31 and the second drive gear 32. When the first drive gear 31 rotates, the transmission gears 35 and the second drive gear 32 rotate. The first synchronous pulley 51 and the second drive gear 32 are both coaxially arranged with the transmission rod 34. The transmission rod 34 is fixedly connected to a limit strip 66. The second drive gear 32 is slidably connected to the transmission rod 34 and the limit strip 66. The second drive gear 32 drives the transmission rod 34 and the first synchronous pulley 51 to rotate. The first synchronous pulley 51 causes all the second synchronous pulleys 52 to rotate through the synchronization device 53, completing the driving process of the external clamping device 5.

[0044] Reference Figure 1 and Figure 2 The transmission device 3 also includes a movable member 36 and a locking disc 37. The locking disc 37 is disposed between the movable member 36 and the second drive gear 32. The locking disc 37 has a locking groove adapted to the second drive gear 32. The movable member 36 is rotatably connected to the second drive gear 32. In the initial state, the second drive gear 32 is located outside the locking groove and meshes with the transmission gear 35. When the first drive gear 31 rotates, it can drive the second drive gear 32 and the transmission rod 34 to rotate.

[0045] Reference Figure 1 and Figure 3 When the arc-shaped plate 55 at the upper end of the external clamping device 5 is in contact with the outer wall of the tubular workpiece, that is, when the value of the pressure sensor is not zero, the moving part 36 works, causing the second drive gear 32 to slide relative to the transmission rod 34. At the same time, the second drive gear 32 enters the locking groove, and the locking plate 37 limits the locking groove, so that the second drive gear 32 and the transmission rod 34 are stationary, keeping the external clamping device 5 unchanged.

[0046] Reference Figure 2 and Figure 3 At this time, the operator continues to drive the first gear 42 to rotate, which in turn drives the roller 41 to rotate, so that the roller 41 comes into contact with the inner wall of the tubular workpiece, thereby achieving the clamping of the inner wall of the tubular workpiece by the inner clamping device 4. At the same time, the axes of the tubular workpiece, the inner clamping device 4, the outer clamping device 5 and the drilling device 6 are all on the same straight line.

[0047] Reference Figure 2 and Figure 3 During the individual adjustment of the inner clamping device 4, the tubular workpiece moves upward, the arc plate 55 at the upper end of the outer clamping device 5 experiences increased force, the elastic telescopic rod 57 is compressed, and at the same time the arc plate 55 at the lower end of the outer clamping device 5 experiences reduced force, the elastic telescopic rod 57 extends under the action of elastic force, so that the force on all arc plates 55 is similar, reducing the possibility of the lower arc plate 55 having a shortened life due to excessive force.

[0048] Reference Figure 2 and Figure 3 Before clamping the tubular workpiece, the operator needs to adjust the initial state of the external clamping device 5 and the internal clamping device 4 so that the reading of the pressure sensor is not zero. That is, when all the arc plates 55 are in contact with the tubular workpiece, all the rollers 41 of the internal clamping device 4 do not contact the inner wall of the tubular workpiece, thus reducing the possibility of the rollers 41 being damaged due to excessive force.

[0049] Reference Figure 1 and Figure 2 The drilling device 6 includes a drilling assembly 61 and a rotating cylinder 62. The drilling assembly 61 is slidably connected to the rotating cylinder 62 in the radial direction. The rotating cylinder 62 is mounted on a movable seat 63. The movable seat 63 has a through groove, and the rotating cylinder 62 is located in the through groove. The movable seat 63 is fixedly connected to a limiting plate. The rotating cylinder 62 has an annular groove that matches the limiting plate. The movable seat 63 provides support and limitation for the rotating cylinder 62 through the limiting plate.

[0050] Reference Figure 1 and Figure 2 The machine body 1 is provided with a rotating component 64, a drive gear 65 is slidably connected to the rotating component 64, and a limit strip 66 is fixedly connected to the rotating component 64. The drive gear 65 is slidably connected to the limit strip 66. A tooth that meshes with the drive gear 65 is fixedly connected to the outer side of the rotating drum 62. The rotating component 64 is a rotating motor. The output shaft of the rotating motor is fixedly connected to the limit strip 66. When the output shaft of the rotating motor rotates, the limit strip 66 limits the drive gear 65, causing the drive gear 65 to rotate. The drive gear 65 meshes with the tooth on the outer side of the rotating drum 62, causing the drive gear 65 to drive the rotating drum 62 to rotate. At the same time, the limit plate slides in the annular groove.

[0051] Reference Figure 1 and Figure 2 The operator causes the rotating drum 62 to slide along the length of the machine body 1. The rotating drum 62 is fixedly connected to two limiting rings 67. The drive gear 65 is located between the two limiting rings 67. When the rotating drum 62 moves with the moving seat 63, the two limiting rings 67 limit the drive gear 65, causing the drive gear 65 to slide with the output shaft of the rotating motor and the limiting strip 66, ensuring that the teeth of the drive gear 65 and the outer side of the rotating drum 62 are always in a meshing state.

[0052] Reference Figure 1 and Figure 2 When the rotating component 64 is working, the drive gear 65 drives the rotating drum 62 to rotate, which in turn drives the drilling assembly 61 on the rotating drum 62 to rotate. This causes the drilling assembly 61 to correspond to different generatrices of the tubular workpiece. The drilling assembly 61 slides against the rotating drum 62, causing the drilling assembly 61 to move radially along the tubular workpiece, thus drilling the tubular workpiece. The rotating component 64 cooperates with the moving seat 63, allowing the drilling assembly 61 to perform drilling on the tubular workpiece at different generatrices and lengths without rotating the tubular workpiece.

[0053] The implementation principle of a high-stability drilling machine according to an embodiment of this application is as follows: the driving component 2 can simultaneously adjust the inner clamping device 4 and the outer clamping device 5, and the second driving gear 32 can be moved by the moving component 36. Alternatively, the driving component 2 can adjust the inner clamping device 4 alone, so that the drilling machine can adapt to a wider range of tubular workpiece models. By setting the inner clamping device 4 and the outer clamping device 5, the drilling machine can clamp the inner wall and the outer wall of the tubular workpiece at the same time, which is beneficial to improving the stability of the tubular workpiece when the drilling machine processes it, and thus improving the accuracy of the drilling machine in processing the tubular workpiece.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-stability drilling machine, characterized in that: The machine includes a body (1), which is provided with two driving components (2), two transmission devices (3), two inner clamping devices (4), two outer clamping devices (5) and a drilling device (6). Both the inner clamping devices (4) and the outer clamping devices (5) are adjustable. The driving components (2) are used to drive the inner clamping devices (4) to adjust, and the transmission devices (3) are used to drive the outer clamping devices (5) to adjust. The inner clamping devices (4) include several rollers (41), several first gears (42) and several connecting rods (43). The two ends of the connecting rods (43) are fixedly connected to the corresponding rollers (41) and first gears (42) respectively. The external clamping device (5) includes a first synchronous wheel (51), several second synchronous wheels (52), a synchronization device (53), a rotating wheel (54), an arc plate (55), a fixed rod (56), and an elastic telescopic rod (57). The first synchronous wheel (51) and the second synchronous wheels (52) are both located in the synchronization device (53). The first synchronous wheel (51) and the second synchronous wheels (52) are both fixedly connected to the corresponding fixed rod (56). The other end of the fixed rod (56) is fixedly connected to the corresponding rotating wheel (54). One end of the elastic telescopic rod (57) is fixedly connected to the rotating wheel (54), and the other end of the elastic telescopic rod (57) is rotatably connected to the arc plate (55). The transmission device (3) includes a first drive gear (31), a second drive gear (32) and a transmission rod (34). The drive member (2) is fixedly connected to the first drive gear (31). The first synchronous pulley (51) and the second drive gear (32) are coaxially arranged with the transmission rod (34). A plurality of transmission gears (35) are provided between the first drive gear (31) and the second drive gear (32). The transmission device (3) further includes a moving part (36) and a locking plate (37). The moving part (36) is rotatably connected to the second drive gear (32). The locking plate (37) is disposed between the moving part (36) and the second drive gear (32). The locking plate (37) has a locking groove that is adapted to the second drive gear (32).

2. The high-stability drilling machine according to claim 1, characterized in that: The elastic telescopic rod (57) is fixedly connected to a limiting block (58) at one end near the arc plate (55), and the limiting block (58) is located on the side of the arc plate (55) away from the inner clamping device (4).

3. The high-stability drilling machine according to claim 2, characterized in that: The rotation point of the elastic telescopic rod (57) and the arc plate (55) is located at the eccentric position of the arc plate (55).

4. The high-stability drilling machine according to claim 1, characterized in that: The drilling device (6) includes a drilling assembly (61) and a rotating drum (62). The drilling assembly (61) is slidably connected to the rotating drum (62) in the radial direction. The machine body (1) is slidably connected to a sliding plate, and the rotating drum (62) is disposed on the sliding plate.

5. A high-stability drilling machine according to claim 4, characterized in that: The body (1) is provided with a rotating part (64), the rotating part (64) is slidably connected to a drive gear (65), the rotating part (64) is fixedly connected to a limit strip (66), the drive gear (65) is slidably connected to the limit strip (66), the outer side of the rotating drum (62) is fixedly connected to a tooth that meshes with the drive gear (65), the rotating drum (62) is fixedly connected to two limit rings (67), and the drive gear (65) is located between the two limit rings (67).

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