A deep hole machining axis correction device

Abstract

The present application relates to the technical field of drilling device, disclose a kind of deep hole machining axis deviation rectification device, including drill bit, the drive component of driving drill bit rotation, with the support round plate in drive component is connected drill rod, the power component of driving drill rod advancement rotation, still include adjusting mechanism, the present application has following advantages and effects: first, the drill bit is returned to normal, ensure that always keep the central state of head when advancing, drill hole deviation does not appear, after the drill bit is returned to normal, the adjusting mechanism of being set, the drill rod of offset is returned to normal, ensure that drilling is successfully completed, guarantee axis precision, improve product quality.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and in particular to a device for correcting the axis of deep hole machining. Background Technology

[0002] With the continuous development of technology and the unremitting efforts of deep hole machining system manufacturers, deep hole machining has become a convenient and efficient machining method. It is widely used in industries such as automotive, aerospace, structural construction, medical devices, mold / tool / fixture, and hydraulic and pneumatic systems. Gun drilling is an ideal solution for deep hole machining, achieving precise machining results with accurate hole positioning, high straightness and coaxiality, and excellent surface finish and repeatability. It can easily machine various types of deep holes, and is also effective for special deep holes such as intersecting holes, blind holes, and flat-bottomed blind holes. However, during deep hole machining, due to the long drill rod, the drill bit is prone to deviation over long distances, causing the hole axis to shift and affecting the quality of the final product. Therefore, a device is needed to monitor and correct this deviation in real time during the drilling process. Summary of the Invention

[0003] The purpose of this invention is to provide a deep hole machining axis correction device, which has the effects of real-time monitoring, timely correction, ensuring drilling effect, and improving the quality of finished products.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: including a drill bit, a drive assembly for driving the drill bit to rotate, a drill rod connected to a support circular plate in the drive assembly, and a power assembly for driving the drill rod to rotate forward.

[0005] The drive assembly includes a drive plate fixed to one end face of the drill bit. A drive rod is vertically fixed to the drive plate. The drive rod passes through an arc-shaped plate one and an arc-shaped plate two in sequence, and its other end is vertically fixed to a drive block. The arc-shaped plates one and two have elongated through holes. The outer surface of the arc-shaped plate two is fitted to the inner surface of the arc-shaped plate one. The drive block is slidably connected to a drive ball. The outer surface of the drive ball has two perpendicular, concave annular grooves one and two. The drive block is slidably connected to the annular groove two. In this configuration, the second annular groove and the second arc plate are located on the same horizontal plane. A fixed block is slidably connected in the first annular groove on the other side of the driving ball relative to the driving block. The fixed block is fixed to the supporting circular plate. Support plates are evenly and vertically fixed on the four sides of the supporting circular plate. Drive motor one and drive motor two are fixed on two adjacent support plates respectively. The output shafts of drive motor one and drive motor two are fixed to one end of arc plate one and arc plate two respectively. The other ends of arc plate one and arc plate two are rotatably connected to two other adjacent support plates.

[0006] The power assembly includes a power motor connected to the drill pipe, the power motor being fixed to a support plate, a support rod being vertically fixed to the bottom of the support plate, the support rod being vertically fixed to a sliding plate, the sliding plate being slidably connected to a parallel lead screw and a slide rod, the lead screw being rotatably connected to the base plate, and the end of the lead screw being coaxially fixedly connected to the output shaft of the rotating motor via a coupling.

[0007] By adopting the above technical solution, the power component drives the drill rod to rotate, and the drill rod drives the support plate (i.e., the drill bit) to rotate, thereby realizing deep hole machining of the workpiece. When the drill bit deviates during its movement, the drive motor in the drive component drives the arc plate to rotate. Since the drive rod passes through the arc plate, and the groove in the arc plate is parallel to the annular groove, the drive block can slide in the arc groove. At this time, when the arc plate drives the drive rod to rotate left and right, the arc plate does not obstruct the movement of the drive rod. That is, the arc plate will drive the drive rod to rotate left and right while sliding in the annular groove. Therefore, the drill bit can be rotated left and right. The drill bit returns to center in the left and right directions; then the second drive motor is started, which drives the second arc plate to rotate. At this time, the arc rod drives the drive block to rotate, and the drive block drives the drive ball to rotate. The second arc plate drives the drive rod to rotate up and down, that is, the drill bit returns to center in the up and down directions. Finally, the drill bit returns to its initial centered position, avoiding the axis deviation after the drill bit deviates, which would affect the quality of the subsequent finished product. Driving the drill bit to center first is beneficial for real-time correction during drilling. The drill rod can be adjusted and centered later to ensure the accurate machining of the axis. The setting of the power component ensures that the rotating rod rotates during drilling.

[0008] A further provision of the present invention is that an indicator assembly is provided on the base plate away from the power motor, including an indicator cylinder sleeved on the drill rod. The inner wall of the indicator cylinder is uniformly recessed with four hollow grooves. Each hollow groove is slidably connected to a pressure plate partially located outside the hollow groove. A spring is connected to the pressure plate located inside the hollow groove. The other end of the spring is connected to the inner circumference of the indicator cylinder. The spring drives the four pressure plates to move closer together.

[0009] A further feature of the present invention is that distance sensors are provided on the end faces of the four pressure plates located within the hollow grooves.

[0010] By adopting the above technical solution, when the drill bit and drill rod deviate, the pressure plate slides to varying degrees in the hollow groove, and the spring also deforms to varying degrees. At this time, the distance between the distance sensor and the inner wall of the hollow groove changes, so the value on the distance sensor changes, indicating that the drill rod has deviated. The deviation of the drill rod indicates that the drill bit has deviated, indicating that the drill bit needs to be aligned first to ensure the accuracy of the axis.

[0011] A further feature of the present invention is that: the end face of the indicator cylinder away from the power motor is evenly distributed with indicator strips, and the end face of the drill bit near the drive plate is evenly distributed with infrared emitters, and the infrared rays emitted by the infrared emitters correspond to and cooperate with the indicator holes in the middle of the indicator strips.

[0012] By adopting the above technical solution and setting indicator strips, the drill bit can be initially centered in the horizontal direction. This action is the basis for subsequent centeredness in the vertical direction. When the drill bit rotates to the point where the rays emitted by the two infrared generators in the vertical direction are on the vertical indicator strips on the indicator tube, it indicates that subsequent vertical rotation can be performed, allowing the drill bit to drill a hole. At this point, the rays emitted by the two infrared generators in the horizontal direction enter the horizontal indicator strip on the indicator tube. All four rays are aligned with the indicator holes in the middle of the four indicator strips, thus centered the drill bit. By using the moving drill bit and the fixed indicator tube, the centeredness of the offset drill bit can be achieved, the direction of the drill bit's movement can be adjusted, and the accuracy of drilling can be ensured.

[0013] A further feature of the present invention is that it also includes an adjustment mechanism, the adjustment mechanism comprising four adjustment cylinders evenly distributed on an adjustment plate, a circular hole at the center of the adjustment plate, the drill rod passing through the circular hole, an adjustment arc plate connected to the piston rod end of the adjustment cylinder, and the adjustment plate being fixed to the base plate by a connecting rod.

[0014] A further feature of the present invention is that the four pressure plates and the four adjusting cylinders are arranged in a one-to-one correspondence in the horizontal and vertical directions.

[0015] By adopting the above technical solution, when deviation occurs, the drill bit is first centered to ensure that the borehole does not deviate during travel and the drill head remains centered. After the drill bit is centered, the offset drill rod is centered through the set adjustment mechanism. Since the adjustment cylinder and pressure plate are set one-to-one, it is convenient to drive the corresponding adjustment cylinder by changing the vertical position of the distance sensor on the pressure plate, so that the value on the distance sensor returns to the initial state, and finally drives the drill rod to be centered. After the drill rod is centered, the drive mechanism can still work to ensure the centering of the drill bit.

[0016] A further feature of the present invention is that ball bearings are provided on the sides of the adjusting arc plate and the pressure rod near the drill rod.

[0017] By adopting the above technical solution, since the drill rod rotates while moving forward, the ball bearings help reduce friction with the drill rod, ensuring smooth drilling.

[0018] A further configuration of the present invention is as follows: the widths of the first annular groove and the second annular groove are the same; the driving block is a cuboid, the width of which is the same as the width of the second annular groove and the length of which is greater than the width of the second annular groove; and the fixing block is configured in the same way as the driving block and is slidably connected to the first annular groove in a perpendicular manner to the driving block.

[0019] By adopting the above technical solution, if the width of the drive block is the same as the width of the second annular groove, the drive block can slide in the second annular groove. At this time, the drive ball will not move, which is beneficial to adjust the left and right position of the drill bit when the first annular plate rotates. If the width of the drive block is greater than the width of the second annular groove, the second annular plate will drive the drive block to rotate when it rotates. The drive block will further drive the drive ball to rotate. At this time, the fixed block and the drive ball move relative to each other. The fixed block slides in the first annular groove, realizing the vertical adjustment of the drill bit.

[0020] A further feature of the present invention is that the diameter of the drill bit is larger than the diameter of the supporting circular plate.

[0021] By adopting the above technical solution, the drill bit diameter is large, so the drive assembly will not contact the inner wall of the workpiece hole, ensuring that the drive assembly has space for operation and adjustment.

[0022] The beneficial effects of this invention are as follows: The power assembly drives the drill rod to rotate, and the drill rod drives the supporting circular plate, i.e., the drill bit, to rotate, thereby realizing deep hole machining of the workpiece. When the drill bit deviates during its movement, the drive motor in the drive assembly drives the arc plate to rotate. Since the drive rod passes through the arc plate, and the groove in the arc plate is parallel to the annular groove, the drive block can slide in the arc groove. At this time, when the arc plate drives the drive rod to rotate left and right, the arc plate does not obstruct the movement of the drive rod. That is, the arc plate will drive the drive rod to rotate left and right while sliding in the annular groove. Therefore, the drill bit can be... The drill bit is centered in the left and right directions. Then, the second drive motor is started, which drives the second arc plate to rotate. At this time, the arc rod drives the drive block to rotate, and the drive block drives the drive ball to rotate. The second arc plate drives the drive rod to rotate up and down, that is, the drill bit is centered in the up and down directions. Finally, the drill bit returns to its initial centered position, which avoids the axis from shifting after the drill bit deviates, which would affect the quality of the subsequent finished product. Driving the drill bit to center first is beneficial for real-time correction during drilling. The drill rod can be adjusted and centered later to ensure the accurate machining of the axis. The setting of the power component ensures that the rotating rod rotates during drilling. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention.

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure from another side.

[0026] Figure 3 This is a schematic diagram of the driving component in this invention.

[0027] Figure 4 yes Figure 3 A schematic diagram of the explosion mechanism.

[0028] Figure 5 This is a schematic diagram of the structure of the indicator component in this invention.

[0029] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure.

[0030] Figure 7 This is a schematic diagram of the power component in this invention.

[0031] In the diagram: 1. Drill bit; 2. Drive assembly; 201. Support plate; 202. Drive plate; 203. Drive rod; 204. Arc plate one; 205. Arc plate two; 206. Drive block; 207. Drive ball; 208. Annular groove one; 209. Annular groove two; 210. Fixing block; 211. Drive motor one; 212. Drive motor two; 3. Drill rod; 4. Power assembly; 41. Support plate; 42. Support rod; 43. Sliding rod; 44. Base plate; 5. Indicator assembly; 51. Indicator cylinder; 52. Hollow groove; 53. Pressure plate; 54. Spring; 55. Distance sensor; 56. Indicator hole; 6. Adjustment assembly; 61. Adjustment cylinder; 62. Adjustment plate; 63. Adjustment arc plate; 7. Infrared emitter; 8. Ball bearing. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] Example: A device for correcting axis deviation in deep hole machining, such as... Figure 1-7The system includes a drill bit 1, a drive assembly 2 for rotating the drill bit 1, a drill rod 3 connected to a support circular plate 201 in the drive assembly 2, and a power assembly 4 for driving the drill rod 3 forward and rotating. The drive assembly 2 includes a drive plate 202 fixed to one end face of the drill bit 1. A drive rod 203 is vertically fixed on the drive plate 202. The drive rod 203 passes through an arc-shaped plate 1 204 and an arc-shaped plate 205 in sequence, and its other end is vertically fixed to a drive block 206. The arc plates of the arc plates 1 204 and 2 205 are provided with elongated through holes. The outer side of the arc plate 205 is attached to the inner side of the arc plate 1 204. The drive block 206 is slidably connected to a drive ball 2. On the outer side of the drive ball 207, there are two perpendicular concave annular grooves 208 and 209. The drive block 206 is slidably connected in the annular groove 209. The annular groove 209 and the arc plate 205 are located on the same horizontal plane. On the other side of the drive ball 207 opposite to the drive block 206, a fixing block 210 is slidably connected in the annular groove 208. The fixing block 210 is fixed on the support circular plate 201. Support plates are evenly and vertically fixed on the four sides of the support circular plate 201. Drive motor 211 and drive motor 212 are fixed on two adjacent support plates respectively. The output shafts of drive motor 211 and drive motor 212 are... One end of each of the two arc-shaped plates 204 and 205 is fixed to one end, and the other ends of the arc-shaped plates 204 and 205 are rotatably connected to two other adjacent support plates. The power assembly 4 includes a power motor connected to the drill rod 3, which is fixed to the support plate 41. A support rod 42 is vertically fixed to the bottom of the support plate 41 and is vertically fixed to a sliding plate. The sliding plate is slidably connected to a parallel lead screw and a slide rod. The lead screw is rotatably connected to the base plate 44, and the end of the lead screw is coaxially fixed to the output shaft of the rotating motor through a coupling. The power assembly 4 drives the drill rod 3 to rotate, and the drill rod 3 drives the support plate 201, i.e., the drill bit 1. Rotation enables deep hole machining of the workpiece. When the drill bit 1 deviates during its travel, the drive motor 211 in the drive assembly 2 drives the arc plate 204 to rotate. Since the drive rod 203 passes through the arc plate 204 and the groove in the arc plate 204 is parallel to the annular groove 209, and the drive block 206 can slide in the arc groove 2, when the arc plate 204 drives the drive rod 203 to rotate left and right, the arc plate 205 will not hinder the movement of the drive rod 203. That is, the arc plate 204 will drive the drive rod 203 to slide in the annular groove 209 to achieve left and right rotation. Therefore, the drill bit 1 can be returned to center in the left and right directions.Then, drive motor 212 is started, which drives arc plate 205 to rotate. At this time, arc rod drives drive block 206 to rotate, and drive block 206 drives drive ball 207 to rotate. Arc plate 205 drives drive rod 203 to achieve up-and-down rotation, that is, drill bit 1 returns to its initial center position, thus preventing the axis from shifting after drill bit 1 deviates, which would affect the quality of the subsequent finished product. Driving drill bit 1 to return to center first is beneficial for real-time correction during drilling. The drill rod 3 can be adjusted and returned to center later to ensure accurate machining of the axis. The setting of power component 4 ensures that the rotating rod rotates during drilling.

[0034] Furthermore, an indicator assembly 5 is provided on the base plate 44, which is away from the power motor. This assembly includes an indicator cylinder 51 fitted over the drill rod 3. The inner wall of the indicator cylinder 51 is uniformly recessed with four hollow grooves 52. Each hollow groove 52 has a pressure plate 53 partially connected to it. A spring 54 is connected to the pressure plate 53 located inside the hollow groove 52. The other end of the spring 54 is connected to the inner circumference of the indicator cylinder 51. The spring 54 drives the four pressure plates 53 to move closer together. A distance sensor 55 is provided on the end face of the four pressure plates 53 located inside the hollow groove 52. When the drill bit 1 and the drill rod 3 deviate, the pressure plate 53 slides to different degrees within the hollow groove 52, and the spring 54 also deforms to different degrees. At this time, the distance between the distance sensor 55 and the inner wall of the hollow groove 52 changes, so the value on the distance sensor 55 changes, indicating that the drill rod 3 has deviated. The deviation of the drill rod 3 indicates that the drill bit 1 has deviated, indicating that the drill bit 1 needs to be aligned first to ensure the accuracy of the axis.

[0035] Furthermore, indicator strips are evenly distributed on the end face of the indicator cylinder 51 away from the power motor, and infrared emitters 7 are evenly distributed on the end face of the drill bit 1 near the drive plate 202. The infrared rays emitted by the infrared emitters 7 correspond to the indicator holes 56 in the middle of the indicator strips. By setting the indicator strips, the drill bit 1 can be initially centered in the horizontal direction. This action is the basis for subsequent centeredness in the vertical direction. When the drill bit 1 rotates to the point where the rays emitted by the two infrared generators in the vertical direction are on the vertical indicator strips on the indicator cylinder 51, it indicates that subsequent vertical rotation can be performed so that the drill bit 1 can drill a hole. The rays emitted by the two infrared generators in the horizontal direction enter the horizontal indicator strip on the indicator cylinder 51. At this time, all four rays are aligned with the indicator holes 56 in the middle of the four indicator strips, realizing the centeredness of the drill bit 1. By using the moving drill bit 1 and the fixed indicator cylinder 51, the centeredness of the offset drill bit 1 can be realized, the travel direction of the drill bit 1 can be adjusted, and the drilling accuracy can be ensured.

[0036] Furthermore, it also includes an adjustment mechanism, which includes four adjusting cylinders 61 evenly distributed on an adjusting plate 62. The adjusting plate 62 has a central hole through which the drill rod 3 passes. An adjusting arc plate 63 is connected to the piston rod end of each adjusting cylinder 61. The adjusting plate 62 is fixed to the base plate 44 via a connecting rod. Four pressure plates 53 and four adjusting cylinders 61 are arranged in a horizontal and vertical correspondence. When deviation occurs, the drill bit 1 is first rectified to ensure that it does not deviate during travel. If drilling deviation occurs, the drill head is kept centered. After the drill bit 1 is centered, the offset drill rod 3 is centered through the adjustment mechanism. Since the adjustment cylinder 61 and the pressure plate 53 are set one-to-one, it is convenient to drive the corresponding adjustment cylinder 61 by changing the vertical position of the distance sensor 55 on the pressure plate 53, so that the value on the distance sensor 55 returns to the initial state, and finally drives the drill rod 3 to be centered. After the drill rod 3 is centered, the drive mechanism can still work to ensure the centering of the drill bit 1.

[0037] Furthermore, ball bearings 8 are provided on the side of the adjusting arc plate 63 and the pressure rod near the drill rod 3. Since the drill rod 3 moves forward and rotates at the same time, the ball bearings 8 help to reduce friction with the drill rod 3 and ensure that the drill rod 3 can drill smoothly.

[0038] Furthermore, the widths of annular groove 1 208 and annular groove 209 are the same. The driving block 206 is a cuboid, with its wide side being the same as the width of annular groove 209 and its long side being greater than the width of annular groove 209. The fixed block 210 is configured identically to the driving block 206 and is slidably connected to the driving block 206 in annular groove 1 208. Since the wide side of the driving block 206 is the same as the width of annular groove 209, the driving block 206 can slide in annular groove 209. At this time, the driving ball 207 will not move, which is beneficial for adjusting the left and right position of the drill bit 1 when annular plate 1 rotates. Since the wide side of the driving block 206 is greater than the width of annular groove 209, when annular plate 2 rotates, it drives the driving block 206 to rotate. The driving block 206 further drives the driving ball 207 to rotate. At this time, the fixed block 210 moves relative to the driving ball 207 and slides in annular groove 1 208, realizing the vertical adjustment of the drill bit 1.

[0039] Furthermore, the diameter of drill bit 1 is larger than the diameter of the supporting circular plate 201. Because drill bit 1 has a larger diameter, the drive assembly 2 will not contact the inner wall of the workpiece borehole, ensuring that the drive assembly 2 has sufficient space for adjustment.

[0040] Working principle of a deep hole machining axis correction device:

[0041] When the lead screw in the power assembly 4 rotates, it causes the sliding plate to slide, which in turn causes the support plate 41 to slide. The power motor drives the drill rod 3 to rotate while sliding, thus realizing the drilling of the workpiece.

[0042] When the value on the distance sensor 55 in the indicating component 5 changes, it indicates that the drill bit 1 has deviated. The drive motor 211 in the drive component 2 drives the arc plate 204 to rotate. Since the drive rod 203 passes through the arc plate 204, and the groove in the arc plate 204 is parallel to the annular groove 209, and the drive block 206 can slide in the annular groove 209, at this time, when the arc plate 204 drives the drive rod 203 to rotate left and right, the arc plate 205 will not hinder the movement of the drive rod 203. That is, the arc plate 204... 04 will cause the drive rod 203 to slide in the annular groove 209 to rotate left and right, so that the drill bit 1 can first be returned to the center position in the left and right directions; then the drive motor 212 is started, and the drive motor 212 drives the arc plate 205 to rotate. At this time, the arc rod drives the drive block 206 to rotate, and the drive block 206 drives the drive ball 207 to rotate. At this time, the arc plate 205 drives the drive rod 203 to achieve up and down rotation, that is, the drill bit 1 returns to the center position in the up and down directions, and finally the drill bit 1 returns to the initial center position.

[0043] First, drill bit 1 is centered to ensure that the drilling does not deviate during travel and that the head remains centered. After centered drill bit 1, the offset drill rod 3 is centered through the set adjustment mechanism. Since the adjustment cylinder 61 and pressure plate 53 are set one-to-one, it is convenient to drive the corresponding adjustment cylinder 61 by changing the vertical position of the distance sensor 55 on the pressure plate 53, so that the value on the distance sensor 55 returns to the initial state, and finally drives the drill rod 3 to be centered. After the drill rod 3 is centered, the drive mechanism can still work to ensure the centered state of drill bit 1.

Claims

1. A device for correcting axis deviation in deep hole machining, characterized in that: It includes a drill bit (1), a drive assembly (2) for driving the drill bit (1) to rotate, a drill rod (3) connected to a support circular plate (201) in the drive assembly (2), and a power assembly (4) for driving the drill rod (3) to rotate forward. The drive assembly (2) includes a drive plate (202) fixed to a section of the drill bit (1). A drive rod (203) is vertically fixed on the drive plate (202). The drive rod (203) passes through the first arc plate (204) and the second arc plate (205) in sequence, and its other end is vertically fixed on the drive block (206). The arc plates of the first arc plate (204) and the second arc plate (205) are provided with elongated through holes. The outer side of the second arc plate (205) is attached to the inner side of the first arc plate (204). The drive block (206) is slidably connected to the drive ball (207). The outer side of the drive ball (207) is provided with two perpendicular concave annular grooves, the first annular groove (208) and the second annular groove (209). The drive block (206) is slidably connected to the annular grooves. In the second (209), the second annular groove (209) and the second arc plate (205) are located on the same horizontal plane. A fixed block (210) is slidably connected in the first annular groove (208) on the other side of the driving ball (207) relative to the driving block (206). The fixed block (210) is fixed on the supporting circular plate (201). The four sides of the supporting circular plate (201) are uniformly and vertically fixed with support plates. The first driving motor (211) and the second driving motor (212) are fixed on two adjacent support plates respectively. The output shafts of the first driving motor (211) and the second driving motor (212) are fixed to one end of the first arc plate (204) and the second arc plate (205) respectively. The other ends of the first arc plate (204) and the second arc plate (205) are rotatably connected to two other adjacent support plates. The power assembly (4) includes a power motor connected to the drill rod (3). The power motor is fixed on a support plate (41). A support rod (42) is vertically fixed to the bottom of the support plate (41). The support rod (42) is vertically fixed to a sliding plate. The sliding plate is slidably connected to a parallel lead screw and a slide rod. The lead screw is rotatably connected to a base plate (44). The end of the lead screw is coaxially fixedly connected to the output shaft of the rotating motor through a coupling. An indicator assembly (5) is provided on the base plate (44) away from the power motor, including an indicator cylinder (51) sleeved outside the drill rod (3). The inner wall of the indicator cylinder (51) is uniformly recessed with four hollow grooves (52). Each hollow groove (52) is slidably connected with a pressure plate (53) partially located outside the hollow groove (52). A spring (54) is connected to the pressure plate (53) located inside the hollow groove (52). The other end of the spring (54) is connected to the inner circumference of the indicator cylinder (51). The spring (54) drives the four pressure plates (53) to move closer together. A distance sensor (55) is provided on the end face of the four pressure plates (53) located inside the hollow groove (52). The end face of the indicator tube (51) away from the power motor is evenly distributed with indicator strips. The end face of the drill bit (1) near the drive plate (202) is evenly distributed with infrared emitters (7). The infrared rays emitted by the infrared emitters (7) correspond to the indicator holes (56) in the middle of the indicator strips. The device also includes an adjustment mechanism. The adjustment mechanism includes adjustment cylinders (61). There are 4 adjustment cylinders (61) evenly distributed on the adjustment plate (62). The adjustment plate (62) has a circular hole in the center. The drill rod (3) passes through the circular hole. The piston rod end of the adjustment cylinder (61) is connected to an adjustment arc plate (63). The adjustment plate (62) is fixed to the base plate (44) by a connecting rod.

2. The deep hole machining axis correction device according to claim 1, characterized in that: The four pressure plates (53) and the four adjusting cylinders (61) are set in a one-to-one correspondence in the horizontal and vertical directions.

3. The deep hole machining axis correction device according to claim 2, characterized in that: Both the adjusting arc plate (63) and the pressure rod are provided with ball bearings (8) on the side near the drill rod (3).

4. The deep hole machining axis correction device according to claim 3, characterized in that: The widths of the first annular groove (208) and the second annular groove (209) are the same. The driving block (206) is a cuboid with its wide side being the same as the width of the second annular groove (209) and its long side being greater than the width of the second annular groove (209). The fixing block (210) is configured the same as the driving block (206) and is slidably connected to the first annular groove (208) in a perpendicular manner to the driving block (206).

5. The deep hole machining axis correction device according to claim 4, characterized in that: The diameter of the drill bit (1) is larger than the diameter of the supporting circular plate (201).

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