Numerical control drilling and tapping center with high machining precision

Abstract

The invention relates to the technical field of numerical control drilling and tapping, in particular to a numerical control drilling and tapping center with high machining precision, which comprises a drilling machine base and a drilling machine main body, a workbench is arranged on the drilling machine base, a drill changing disc is arranged on the drilling machine main body, and lifting plates are movably mounted on two sides of the drilling machine base. And movable blocks are movably mounted on the sides, close to each other, of the two lifting plates. The laser distance measuring sensor is arranged, the drilling machine head drives the drill bit set to rotate, in the rotating process of the drill bit set, the distance value between the clamping rod and the drill bit set is measured through the laser distance measuring sensor, and the measured distance value is transmitted to the background control system to be compared with a standard distance value; if the detected distance value exceeds the standard distance value, it is indicated that the drill bit set deviates in the using process, at the moment, a worker overhauls the drill bit set, deviation detection can be conducted on the drill bit set through the operation mode, and therefore the machining precision of the drilling machine can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of CNC drilling and tapping technology, and in particular to a CNC drilling and tapping center with high machining accuracy. Background Technology

[0002] A drilling and tapping center is a high-efficiency, high-precision CNC machine tool that integrates multiple processing functions such as drilling, tapping, and milling. It is also known as a drilling and milling tapping center, drilling and tapping center, drilling and milling center, or drilling and milling machining center.

[0003] When a drilling and tapping machine is in use, the drill bit assembly will shift under high-intensity use and the influence of factors such as vibration and impact. In this case, the machining accuracy of the workpiece by the drill bit assembly will be affected. The worktable of the drilling and tapping machine will also be affected by impact and vibration, causing the worktable to tilt, thereby affecting the machining accuracy of the workpiece. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision CNC drilling and tapping center.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-precision CNC drilling and tapping center includes a drilling machine base and a drilling machine body. The drilling machine base is provided with a worktable, and the drilling machine body is provided with a drill changing plate. Lifting plates are movably installed on both sides of the drilling machine base. Movable blocks are movably installed on the side of the two lifting plates that are close to each other. A first auxiliary mechanism is provided on the movable blocks. Tool plates are movably installed on both sides of the drilling machine body. Detection mechanisms are provided on the tool plates.

[0006] Preferably, a plurality of first electric lifting rods are evenly installed on the bottom of the lifting plate, with the mounting ends of the first electric lifting rods facing downwards. A fixing rod is connected to the mounting end of the first electric lifting rod, and the end of the fixing rod facing the drill base is connected to the drill base.

[0007] Preferably, the lifting plate has a second slot, and the top and bottom inner walls of the second slot are provided with displacement grooves. A displacement electric slider is slidably installed inside the displacement groove, and a moving block is slidably installed inside the second slot. The side of the displacement electric slider close to the moving block is connected to the moving block, and a third electric extension rod is installed on the side of the moving block away from the moving block. The extension end of the third electric extension rod passes through the moving block and is connected to the moving block.

[0008] Preferably, the first auxiliary mechanism includes displacement rods and clamping blocks. Two displacement rods are movably installed on the side of the movable block away from the lifting plate, and two clamping blocks are movably installed on the side of the displacement rods away from the movable block. A cleaning brush is movably installed on the bottom of the movable block.

[0009] Preferably, the movable block has a first sliding groove on the side away from the lifting plate, and the displacement rod is connected to a first electric slider on the side near the movable block. The first electric slider is slidably installed inside the first sliding groove.

[0010] Preferably, a second groove is provided on the side of the displacement rod away from the movable block, and a second electric slider is connected to the end of the clamping block facing the displacement rod. The second electric slider is slidably installed inside the second groove. A second electric lifting rod is embedded in the bottom of the movable block, with the lifting end of the second electric lifting rod facing downward and connected to the top of the cleaning brush.

[0011] Preferably, connecting rods are installed on both sides of the drilling machine body. A first slot is opened on the side of the connecting rod away from the drilling machine body. A threaded rod is rotatably installed inside the first slot. A lifting block is slidably installed inside the first slot. The threaded rod is threaded through the lifting block. A rotary motor is installed on the top of the connecting rod. The output end of the rotary motor is movably connected to the threaded rod through the top of the connecting rod. A first electric extension rod is connected to the side of the lifting block away from the connecting rod. The extension end of the first electric extension rod is away from the connecting rod. The extension end of the first electric extension rod is connected to a second electric extension rod. The extension end of the second electric extension rod faces the drill changing plate. The extension end of the second electric extension rod is connected to an extension block. Tool plates are movably connected to the two extension blocks on their opposite sides.

[0012] Preferably, a first electric telescopic rod is installed on each of the two extension blocks on the side that is far apart from each other. The telescopic end of the first electric telescopic rod passes through the extension block. A first rotary motor is embedded in the tool plate on the side facing the extension block. The mounting end of the first rotary motor faces the extension block. The telescopic end of the first electric telescopic rod is connected to the mounting end of the first rotary motor.

[0013] Preferably, the detection mechanism includes clamping rods and laser ranging sensors. A rotating rod is movably mounted on the top of the tool plate, and two clamping rods are movably mounted on the top of the rotating rods. Laser ranging sensors are embedded in the two clamping rods on their sides that are close to each other, and multiple arc-shaped abutment plates are mounted on the two clamping rods on their sides that are close to each other.

[0014] Preferably, a second rotary motor is embedded in the top of the tool plate, with the output end of the second rotary motor facing upwards. The output end of the second rotary motor is connected to the bottom of the rotating rod. A movable slide groove is provided at the top of the rotating rod, and a connector is provided at the bottom of the clamping rod. The top of the connector is designed with a groove. The bottom end of the clamping rod is rotatably mounted on the top of the connector via an electric rotating shaft. A movable electric slider is installed at the bottom of the connector and is slidably mounted inside the movable slide groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In this invention, a laser rangefinder is installed. The drill head drives the drill bit assembly to rotate. During the rotation of the drill bit assembly, the laser rangefinder measures the distance between the clamping rod and the drill bit assembly. The measured distance value is transmitted to the background control system and compared with the standard distance value. If the detected distance value exceeds the standard distance value, it indicates that the drill bit assembly has deviated during use. At this time, the operator can inspect and repair it. This operation method can detect the deviation of the drill bit assembly, thereby ensuring the machining accuracy of the drill. The distance between the worktable and the clamping rod is detected by a laser rangefinder. By moving the tool plate on the worktable, the distance can be detected at different positions. The detected distance value is then transmitted to the background control system and compared with the standard distance value. If the detected distance value exceeds the standard distance value, it indicates that the worktable is tilted. This operation method can detect the tilt of the worktable, thereby ensuring the flatness of the workpiece placed on the worktable and ensuring the accuracy of the workpiece processing by the device.

[0016] In this invention, clamping rods and clamping blocks are provided. The two clamping rods move closer to each other until the arc-shaped abutment plate abuts against the outside of the drill bit assembly and rotates. This operation allows the drill bit assembly to rotate and disengage at the drill changing table, enabling the drill bit assembly to be removed from the drill changing table. Two clamping rods on the other side of the drill press body hold a new drill bit assembly, and the new drill bit can be installed on the drill changing table by following the reverse operation steps. This operation method can automatically replace the drill bit assembly on the drill changing table, avoiding the manual operation steps of the traditional replacement method. This not only reduces the labor intensity of the workers, but also reduces the operational risks of the workers. When a tilt is detected on the worktable, the four sets of clamps at both ends of the worktable adjust its height according to the detection results of the laser rangefinder. This adjustment continues until the laser rangefinder detects that the worktable is no longer tilted. Then, with the four sets of clamps holding the worktable in place, the operator tightens the fixing bolts of the worktable. This operation method helps to adjust the level of the worktable, which not only reduces the difficulty for the operator in adjusting the level of the worktable, but also ensures the accuracy of the workpiece processing by the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the tool plate connection structure of the present invention; Figure 3 This is a schematic diagram of the first rotating motor mounting structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the movable block mounting structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the installation structure of the displacement rod and the second electric lifting rod of the present invention.

[0018] In the diagram: 1. Drill press base; 2. Drill press body; 3. Drill changing disc; 4. Connecting rod; 5. Fixing rod; 6. First electric lifting rod; 7. Lifting plate; 8. Worktable; 9. First slot; 10. Threaded rod; 11. Rotary motor; 12. Lifting block; 13. First electric extension rod; 14. Second electric extension rod; 15. Extension block; 16. First electric telescopic rod; 17. Tool plate; 18. Rotating rod; 19. Connecting piece; 20. Clamping rod; 21. Arc-shaped abutment plate; 2. Laser rangefinder sensor; 23. First rotating motor; 24. Second rotating motor; 25. Moving slide; 26. Moving electric slider; 29. ​​Movable block; 30. Third electric extension rod; 31. Second slot; 32. Displacement slide; 33. Displacement electric slider; 34. Moving block; 35. First slide; 36. First electric slider; 37. Displacement rod; 38. Second slide; 39. Second electric slider; 40. Clamping block; 41. Cleaning brush; 42. Second electric lifting rod. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figure 1-7 A high-precision CNC drilling and tapping center includes a drill base 1 and a drill body 2. The drill base 1 has a worktable 8, and the drill body 2 has a drill changing disc 3. Lifting plates 7 are movably mounted on both sides of the drill base 1. Movable blocks 29 are movably mounted on the side of each lifting plate 7 that is close to each other. A first auxiliary mechanism is mounted on each movable block 29. Tool plates 17 are movably mounted on both sides of the drill body 2, and detection mechanisms are mounted on each tool plate 17. The first auxiliary mechanism can clean and assist in clamping the worktable 8, thereby achieving horizontal adjustment of the worktable 8. The detection mechanism can perform tilt detection of the drill bit assembly, thus ensuring the machining accuracy of the drilling machine.

[0021] As a technical optimization of the present invention, a plurality of first electric lifting rods 6 are evenly installed on the bottom of the lifting plate 7. The mounting ends of the first electric lifting rods 6 face downwards, and a fixing rod 5 is connected to the mounting ends of the first electric lifting rods 6. The end of the fixing rod 5 facing the drill base 1 is connected to the drill base 1. By raising and lowering the first electric lifting rods 6, the lifting plate 7 can be raised and lowered according to different usage requirements.

[0022] As a technical optimization of the present invention, a second slot 31 is provided on the lifting plate 7. Displacement grooves 32 are provided on the top and bottom inner walls of the second slot 31. A displacement electric slider 33 is slidably installed inside the displacement groove 32, and a moving block 34 is slidably installed inside the second slot 31. The side of the displacement electric slider 33 closest to the moving block 34 is connected to the moving block 34. A third electric extension rod 30 is installed on the side of the moving block 34 away from the movable block 29. The extension end of the third electric extension rod 30 passes through the moving block 34 and is connected to the movable block 29. By sliding the displacement electric slider 33 in the displacement groove 32, the movable block 29 can be moved on the lifting plate 7 according to different usage requirements, and the third electric extension rod 30 can extend the movable block 29 according to different usage requirements.

[0023] As a technical optimization of the present invention, the first auxiliary mechanism includes displacement rods 37 and clamping blocks 40. Two displacement rods 37 are movably installed on the side of the movable block 29 away from the lifting plate 7, and two clamping blocks 40 are movably installed on the side of the displacement rods 37 away from the movable block 29. A cleaning brush 41 is movably installed at the bottom of the movable block 29. The clamping blocks 40 can clamp and fix the worktable 8 according to different usage requirements.

[0024] As a technical optimization of the present invention, a first slide groove 35 is provided on the side of the movable block 29 away from the lifting plate 7, and a first electric slider 36 is connected to the side of the displacement rod 37 near the movable block 29. The first electric slider 36 is slidably installed inside the first slide groove 35. By sliding the first electric slider 36 in the first slide groove 35, the displacement rod 37 can be moved on the movable block 29 according to different usage requirements.

[0025] As a technical optimization of the present invention, a second groove 38 is provided on the side of the displacement rod 37 away from the movable block 29. A second electric slider 39 is connected to the end of the clamping block 40 facing the displacement rod 37. The second electric slider 39 is slidably installed inside the second groove 38. A second electric lifting rod 42 is embedded in the bottom of the movable block 29. The lifting end of the second electric lifting rod 42 faces downward and is connected to the top of the cleaning brush 41. By sliding the second electric slider 39 in the second groove 38, the clamping block 40 can be moved on the displacement rod 37 according to different usage needs. By raising and lowering the cleaning brush 41 through the second electric lifting rod 42, the cleaning brush 41 can reach the top of the worktable 8. Then, by moving the movable block 29 on the worktable 8, the debris on the top of the worktable 8 can be cleaned, increasing the ease of use of the device.

[0026] As a technical optimization of the present invention, connecting rods 4 are installed on both sides of the drill body 2. A first slot 9 is opened on the side of the connecting rod 4 away from the drill body 2. A threaded rod 10 is rotatably installed inside the first slot 9. A lifting block 12 is slidably installed inside the first slot 9. The threaded rod 10 is threaded through the lifting block 12. A rotary motor 11 is installed on the top of the connecting rod 4. The output end of the rotary motor 11 is movably connected to the top of the connecting rod 4 and the threaded rod 10. A first electric extension rod 13 is connected to the side of the lifting block 12 away from the connecting rod 4. The extension end of the first electric extension rod 13 is away from the connecting rod 4. The extension end of the first electric extension rod 13 is connected to a second electric extension rod 14. The extension end of the second electric extension rod 14 faces the drill changing plate 3. The extension end of the second electric extension rod 14 is connected to an extension block 15. Tool plates 17 are movably connected to the two extension blocks 15 on the sides facing each other. By rotating the threaded rod 10 driven by the rotary motor 11, the lifting block 12 can be raised and lowered inside the first slot 9, thereby adjusting the working height of the tool plate 17. The first electric extension rod 13 can drive the second electric extension rod 14 to extend according to different usage needs, and the second electric extension rod 14 can drive the extension block 15 to extend according to different usage needs.

[0027] As a technical optimization of the present invention, each of the two extension blocks 15 is equipped with a first electric telescopic rod 16 on its opposite side. The telescopic end of the first electric telescopic rod 16 passes through the extension block 15. A first rotary motor 23 is embedded in the tool plate 17 facing the extension block 15, with the mounting end of the first rotary motor 23 facing the extension block 15. The telescopic end of the first electric telescopic rod 16 is connected to the mounting end of the first rotary motor 23. The first electric telescopic rod 16 can extend the tool plate 17 according to different usage requirements, and the first rotary motor 23 can rotate the tool plate 17 according to different usage requirements.

[0028] As an optimized technical solution of the present invention, the detection mechanism includes clamping rods 20 and laser rangefinders 22. A rotating rod 18 is movably mounted on the top of the tool plate 17, and two clamping rods 20 are movably mounted on the top of the rotating rod 18. Laser rangefinders 22 are embedded in the two clamping rods 20 on their adjacent sides, and multiple arc-shaped abutment plates 21 are mounted on the adjacent sides of the two clamping rods 20. The arc-shaped abutment plates 21 abut against the outer side of the drill bit assembly to clamp and fix the drill bit assembly. The laser rangefinders 22 can detect the offset of the drill bit assembly and the levelness of the worktable 8.

[0029] As a technical optimization of the present invention, a second rotary motor 24 is embedded in the top of the tool plate 17, with the output end of the second rotary motor 24 facing upwards and connected to the bottom of the rotating rod 18. A movable slide groove 25 is provided at the top of the rotating rod 18, and a connecting member 19 is provided at the bottom of the clamping rod 20. The top of the connecting member 19 has a groove design, and the bottom end of the clamping rod 20 is rotatably mounted on the top of the connecting member 19 via an electric rotating shaft. A movable electric slider 26 is installed at the bottom of the connecting member 19 and slidably mounted inside the movable slide groove 25. The electric rotating shaft can drive the clamping rod 20 to rotate according to different usage requirements. By sliding the movable electric slider 26 in the movable slide groove 25, the connecting member 19 can be moved on the rotating rod 18 according to different usage requirements. The second rotary motor 24 can drive the rotating rod 18 to rotate according to different usage requirements.

[0030] In use, all electrical devices in this invention are powered via external power supplies connected through wires. The devices are controlled by a pre-set control system. The drill base 1, drill body 2, drill changing disc 3, and laser rangefinder 22 used in this invention are all existing mature technologies, and therefore will not be described in detail here. Figure 1 The drill bit changing table 3 shown is equipped with multiple drill bit sets, and the drill bit sets are replaced by direct pulling out. This method is a mature existing technology, so it will not be elaborated further. When the device is in use and the drill bit set needs to be replaced, the rotating motor 11 drives the threaded rod 10 to rotate, so that the lifting block 12 can be raised and lowered inside the first slot 9, thereby adjusting the working height position of the tool plate 17. Then, the second electric extension rod 14 drives the extension block 15 to extend, so that the tool plate 17 moves towards the drill changing plate 3. After the tool plate 17 moves to the preset working position, the first electric telescopic rod 16 drives the tool plate 17 to extend, so that the tool plate 17 moves to the working position below the drill changing plate 3. Then, the tool plate 17 rises upward, so that the two clamping rods 20 move to both sides of the drill bit set to be replaced. Then, the movable electric slider 26 slides in the movable slide groove 25, so that the two clamping rods 20 move closer to each other until the arc-shaped abutment plate 21 abuts against the outside of the drill bit set, completing the clamping and fixing of the drill bit set to be replaced. Subsequently, the second rotating motor 24 drives the rotating rod 18 to rotate, so that the clamping rod 20 can rotate the drill bit assembly while clamping it. This operation allows the drill bit assembly to rotate and disengage from the drill changing plate 3. This rotation and disengagement method is a mature existing technology, so it will not be described in detail. Then, the tool plate 17 moves downward to remove the drill bit assembly from the drill changing plate 3. The operator places the new drill bit set on the two clamping rods 20 on the other side of the drill press body 2 and clamps and fixes it with the clamping rods 20. Then, the clamping rods 20 clamp the new drill bit set and, following the reverse operation steps, can install the new drill bit on the drill changing plate 3. Through this operation method, the drill bit set on the drill changing plate 3 can be automatically replaced, avoiding the manual operation steps of the operator in the traditional replacement method. This not only reduces the labor intensity of the operator, but also reduces the operation risk of the operator.

[0031] like Figure 1 The drill head is located behind the drill changer 3. The drill head automatically connects to different drill bit sets on the drill changer 3 to process the workpiece. The automatic connection of the drill head to different drill bit sets on the drill changer 3 is a mature existing technology, so it will not be elaborated further. When the drill head is connected to the drill bit set, the two clamping rods 20 move to both sides of the drill bit set. Then, the drill head drives the drill bit set to rotate. During the rotation of the drill bit set, the distance between the clamping rods 20 and the drill bit set is measured by the laser distance sensor 22. The measured distance value is transmitted to the background control system and compared with the standard distance value. If the detected distance value exceeds the standard distance value, it indicates that the drill bit set has deviated during use. At this time, the operator will inspect and repair it. This operation method can detect the deviation of the drill bit set, thereby ensuring the processing accuracy of the drill.

[0032] When tilt detection of the worktable 8 is required, the tool plate 17 is rotated by the first rotary motor 23, causing the clamping rod 20 to rotate to a downward-facing position. Then, the clamping rod 20 is rotated by the electric shaft, causing the laser rangefinder 22 to rotate to a downward-facing position. Subsequently, the tool plate 17 moves above the worktable 8, and the laser rangefinder 22 detects the distance between the worktable 8 and the clamping rod 20. By moving the tool plate 17 over the worktable 8, detection can be completed at different positions of the worktable 8. The detected distance value is then transmitted to the background control system and compared with the standard distance value. If the detected distance value exceeds the standard distance value, it indicates that the worktable 8 is tilted. Through this operation, the tilt detection of the worktable 8 can be completed, thereby ensuring the flatness of the workpiece placed on the worktable 8 and ensuring the accuracy of the workpiece processing by the device.

[0033] When a tilt is detected in the worktable 8, the operator loosens the connecting bolts on the worktable 8. Then, the movable blocks 29 at both ends of the worktable 8 move to their preset positions. The second electric slider 39 slides in the second slide groove 38, allowing the clamping blocks 40 to hold the worktable 8. The laser rangefinder 22 then detects the tilt of the worktable 8 again. Based on the detection results, the four sets of clamping blocks 40 at both ends of the worktable 8 adjust its height until the laser rangefinder 22 detects that the worktable 8 is no longer tilted. With the four sets of clamping blocks 40 holding the worktable 8 in place, the operator tightens the fixing bolts. This operation method helps to adjust the level of the worktable 8, reducing the difficulty of adjusting its level and ensuring the accuracy of the workpiece processing.

[0034] When it is necessary to clean the processing debris on the workbench 8, the movable block 29 moves to the top of the workbench 8, and then the cleaning brush 41 is raised and lowered by the second electric lifting rod 42 so that the cleaning brush 41 can reach the top of the workbench 8. Then, by moving the movable block 29 on the workbench 8, the debris on the top of the workbench 8 can be cleaned, which increases the ease of use of the device.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-precision CNC drilling and tapping center, comprising a drilling machine base (1) and a drilling machine body (2), characterized in that, The drill base (1) is provided with a worktable (8), the drill body (2) is provided with a drill changing plate (3), the drill base (1) is movably installed with lifting plates (7) on both sides, the two lifting plates (7) are movably installed with movable blocks (29) on the side that is close to each other, the movable blocks (29) are provided with a first auxiliary mechanism, the drill body (2) is movably installed with tool plates (17) on both sides, and the tool plates (17) are provided with a detection mechanism.

2. The high-precision CNC drilling and tapping center according to claim 1, characterized in that, The bottom of the lifting plate (7) is evenly equipped with a plurality of first electric lifting rods (6), the mounting end of the first electric lifting rod (6) faces downward, and the mounting end of the first electric lifting rod (6) is connected to a fixing rod (5). The end of the fixing rod (5) facing the drill base (1) is connected to the drill base (1).

3. The high-precision CNC drilling and tapping center according to claim 1, characterized in that, The lifting plate (7) is provided with a second slot (31). The top and bottom inner walls of the second slot (31) are provided with displacement grooves (32). A displacement electric slider (33) is slidably installed inside the displacement groove (32). A moving block (34) is slidably installed inside the second slot (31). The side of the displacement electric slider (33) close to the moving block (34) is connected to the moving block (34). A third electric extension rod (30) is installed on the side of the moving block (34) away from the movable block (29). The extension end of the third electric extension rod (30) passes through the moving block (34) and is connected to the movable block (29).

4. A high-precision CNC drilling and tapping center according to claim 1, characterized in that, The first auxiliary mechanism includes displacement rods (37) and clamping blocks (40). Two displacement rods (37) are movably installed on the side of the movable block (29) away from the lifting plate (7). Two clamping blocks (40) are movably installed on the side of the displacement rods (37) away from the movable block (29). A cleaning brush (41) is movably installed on the bottom of the movable block (29).

5. A high-precision CNC drilling and tapping center according to claim 4, characterized in that, The movable block (29) has a first slide groove (35) on the side away from the lifting plate (7), and the displacement rod (37) is connected to a first electric slider (36) on the side close to the movable block (29). The first electric slider (36) is slidably installed inside the first slide groove (35).

6. A high-precision CNC drilling and tapping center according to claim 4, characterized in that, The displacement rod (37) has a second groove (38) on the side away from the movable block (29). The clamping block (40) is connected to a second electric slider (39) at one end facing the displacement rod (37). The second electric slider (39) is slidably installed inside the second groove (38). The bottom of the movable block (29) is embedded with a second electric lifting rod (42). The lifting end of the second electric lifting rod (42) faces downward and is connected to the top of the cleaning brush (41).

7. A high-precision CNC drilling and tapping center according to claim 1, characterized in that, Connecting rods (4) are installed on both sides of the drill body (2). A first slot (9) is opened on the side of the connecting rod (4) away from the drill body (2). A threaded rod (10) is rotatably installed inside the first slot (9). A lifting block (12) is slidably installed inside the first slot (9). The threaded rod (10) is threaded through the lifting block (12). A rotary motor (11) is installed on the top of the connecting rod (4). The output end of the rotary motor (11) movably passes through the top of the connecting rod (4) and the threaded rod (10). Connected, the lifting block (12) is connected to the side away from the connecting rod (4) with a first electric extension rod (13), the extension end of the first electric extension rod (13) is away from the connecting rod (4), the extension end of the first electric extension rod (13) is connected to a second electric extension rod (14), the extension end of the second electric extension rod (14) faces the drill changing plate (3), the extension end of the second electric extension rod (14) is connected to an extension block (15), and the two extension blocks (15) are movably connected to tool plates (17) on the sides facing each other.

8. A high-precision CNC drilling and tapping center according to claim 7, characterized in that, Both of the two extension blocks (15) are equipped with a first electric telescopic rod (16) on their opposite sides. The telescopic end of the first electric telescopic rod (16) passes through the extension block (15). A first rotary motor (23) is embedded in the tool plate (17) on the side facing the extension block (15). The mounting end of the first rotary motor (23) faces the extension block (15). The telescopic end of the first electric telescopic rod (16) is connected to the mounting end of the first rotary motor (23).

9. A high-precision CNC drilling and tapping center according to claim 1, characterized in that, The detection mechanism includes clamping rods (20) and laser rangefinders (22). A rotating rod (18) is movably mounted on the top of the tool plate (17). Two clamping rods (20) are movably mounted on the top of the rotating rod (18). Laser rangefinders (22) are embedded in the two clamping rods (20) on their sides that are close to each other. Multiple arc-shaped abutment plates (21) are installed on the two clamping rods (20) on their sides that are close to each other.

10. A high-precision CNC drilling and tapping center according to claim 9, characterized in that, The tool plate (17) is embedded with a second rotary motor (24) at the top. The output end of the second rotary motor (24) faces upward and is connected to the bottom of the rotating rod (18). The top of the rotating rod (18) is provided with a movable slide groove (25). The bottom of the clamping rod (20) is provided with a connector (19). The top of the connector (19) is designed with a groove. The bottom of the clamping rod (20) is rotatably mounted on the top of the connector (19) through an electric rotating shaft. The bottom of the connector (19) is provided with a movable electric slider (26). The movable electric slider (26) is slidably mounted inside the movable slide groove (25).

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