A circuit board drilling device with a stable clamping structure

Abstract

The application belongs to the technical field of integrated circuit manufacturing, and relates to a circuit board drilling device with a stable clamping structure. The device comprises a shell, the shell is fixedly connected with a connecting frame, the connecting frame is slidably connected with a first electric sliding frame, the first electric sliding frame is slidably connected with a second electric sliding frame, the second electric sliding frame is slidably connected with a third electric sliding frame, the third electric sliding frame is fixedly connected with a shell body, the shell body is rotationally connected with a rotating shaft, the rotating shaft is provided with a drill bit, the rotating shaft is slidably and rotationally connected with a rotating cylinder, the rotating cylinder is rotationally connected with an upper pressing plate, the upper pressing plate is slidably connected with a lower pressing plate, and the lower pressing plate is rotationally connected with a rotating pressing ring. The circuit board is clamped by the rotating pressing ring and the supporting frame. When the circuit board is twisted around the drilling position under stress, the clamping block no longer clamps the circuit board. The circuit board drives the rotating pressing ring to rotate, reduces the stress damage of the circuit board drilling position, and even reduces the probability of deformation of the circuit board, so as to guarantee the accuracy of the circuit board drilling and improve the quality of the circuit board drilling.

Description

Technical Field

[0001] This invention relates to the field of integrated circuit manufacturing technology, and in particular to a circuit board drilling device with a stable clamping structure. Background Technology

[0002] Circuit boards are the core components of electronic devices, and the drilling accuracy of circuit boards directly affects the performance of electronic devices. During the drilling process, clamping structures are usually used to fix the circuit boards to prevent displacement and vibration during drilling.

[0003] Currently, most common circuit board drilling clamping devices use rigid clamping methods, such as applying a fixed clamping force to the circuit board from all sides using multiple clamping blocks. However, during the actual drilling process, torsional forces are generated at the contact point between the drill bit and the circuit board. These torsional forces can cause local deformation of the circuit board, and even cause the circuit board to twist slightly around the drilled hole. Under the traditional rigid clamping method, the circuit board cannot release the torsional stress it is subjected to. This can lead to cracks, delamination, or even overall deformation and displacement of the circuit board around the drilled hole, resulting in inaccurate positioning of subsequent drilling and thus affecting the quality of the circuit board after drilling. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a circuit board drilling device with a stable clamping structure.

[0005] The technical solution is as follows: A circuit board drilling device with a stable clamping structure includes a housing, four clamping blocks slidably connected to the housing, each clamping block having an inclined surface on its opposite side, a pressure sensor installed on the inclined surface of each clamping block, a plurality of electromagnetic slide rails provided on the housing, electromagnetic sliders fixedly connected to the clamping blocks and sliding within the corresponding electromagnetic slide rails on the housing, a connecting frame fixedly connected to the housing, a first electric slide slidably connected to the connecting frame, a second electric slide slidably connected to the first electric slide, a support frame fixedly connected to the second electric slide, a third electric slide slidably connected to the second electric slide, a housing fixedly connected to the third electric slide, a rotating shaft rotatably connected to the housing, a drill bit mounted on the rotating shaft, a rotating cylinder slidably and rotatably connected to the rotating shaft, an upper pressure plate rotatably connected to the rotating cylinder, a lower pressure plate slidably connected to the upper pressure plate, an airbag fixedly connected between the upper pressure plate and the lower pressure plate, a rotating pressure ring rotatably connected to the lower pressure plate, and a compression spring fixedly connected between the rotating pressure ring and the rotating cylinder.

[0006] Preferably, a sliding plate is slidably connected inside the clamping block, a return spring is fixedly connected between the sliding plate and the adjacent clamping block, a pneumatic rod is fixedly connected inside the clamping block, the telescopic part of the pneumatic rod is fixedly connected to the adjacent sliding plate, and the pneumatic rod communicates with the airbag.

[0007] Preferably, the clamping block is slidably connected to a pressure bar, and the pressure bar is driven by a transmission component to the adjacent sliding plate.

[0008] Preferably, the pressure strip is slidably connected with a plurality of sliding rods.

[0009] Preferably, the housing is equipped with an electric telescopic rod, the telescopic part of which is fixedly connected to the upper pressure plate, and the rotating cylinder is rotatably connected to a second gear, which is splinedly connected to the rotating shaft.

[0010] Preferably, the housing is equipped with a motor, the output shaft of the motor is fixedly connected to a first bevel gear, the housing is rotatably connected to symmetrically distributed first gears, the first gears are used to drive the second gears, the first gears are coaxially connected to the second bevel gears, and the symmetrically distributed second bevel gears all mesh with the first bevel gears.

[0011] Preferably, the support frame is fixedly connected to a guide platform, and the support frame is provided with a plurality of through holes distributed circumferentially, with the guide platform located between all the through holes.

[0012] Preferably, the support frame is slidably connected with a sliding ring, the guide platform is located between all the through holes, the guide platform and all the through holes are located inside the sliding ring, and an elastic element is fixedly connected between the sliding ring and the support frame.

[0013] Preferably, the central axis of the sliding ring, the central axis of the guide platform, and the axis of rotation of the drill bit are collinear.

[0014] Preferably, the sliding ring has a plurality of circumferentially evenly distributed rotating balls rotatably connected to the side near the drill bit.

[0015] Compared with the prior art, this application has the following beneficial effects: The present invention clamps the circuit board by rotating the pressure ring and the support frame. When the circuit board is subjected to force and twists around the drilled hole, the clamping block no longer clamps the circuit board, and the circuit board drives the rotating pressure ring to rotate, reducing the probability of damage to the circuit board at the drilled hole and even deformation of the circuit board, thereby ensuring the accuracy of the circuit board drilling and improving the quality of the circuit board drilling. The sliding rod is used to press the surface of the circuit board to ensure that the surface of the circuit board is flat after placement, thereby ensuring the accuracy of the circuit board drilling and improving the quality of the circuit board drilling. When the circuit board is subjected to torsional force and there is a tendency to skew, the clamping of the circuit board is released and the circuit board is rotated around the current drilled hole position, reducing the probability of damage to the circuit board. The drill bit is reversed to perform reverse grinding at the drilled hole, reducing the difficulty of drilling. During the reverse drilling process, the sliding plate is used to straighten and reset the circuit board, improving the stability of the circuit board drilling. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the clamping block of the present invention; Figure 3 This is a three-dimensional structural diagram of the support frame of the present invention; Figure 4 This is a three-dimensional structural diagram of the housing of the present invention; Figure 5 This is a three-dimensional structural diagram of the sliding ring of the present invention; Figure 6 This is a three-dimensional structural diagram of the sliding rod of the present invention; Figure 7 This is a three-dimensional structural diagram of the rotating ball of the present invention.

[0017] The following are the labels in the diagram: 1. Outer shell, 2. Clamping block, 201. Pressure sensor, 3. Electromagnetic slider, 4. Connecting frame, 5. First electric slide, 6. Second electric slide, 7. Support frame, 8. Third electric slide, 9. Shell, 10. Rotating shaft, 11. Drill bit, 12. Rotating cylinder, 13. Upper pressure plate, 14. Airbag, 15. Lower pressure plate, 1501. Rotating pressure ring, 16. Sliding plate, 17. Pneumatic rod, 18. Pressure bar, 19. Sliding rod, 20. Electric telescopic rod, 21. Motor, 22. First bevel gear, 23. First gear, 24. Second bevel gear, 25. Second gear, 26. Guide table, 27. Through hole, 28. Elastic element, 29. Sliding ring, 30. Rotating ball. Detailed Implementation

[0018] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0019] Example 1: Under the traditional rigid clamping method, the circuit board cannot release the torsional stress it is subjected to. This will cause cracks, delamination and even deformation and displacement of the circuit board around the drilled holes, resulting in inaccurate positioning of subsequent drill holes and affecting the quality of the circuit board after drilling.

[0020] A circuit board drilling device with a stable clamping structure, such as Figures 1-7As shown, the device includes a housing 1, on which a control terminal (not shown) is mounted. Four clamping blocks 2 are slidably connected to the housing 1. Each clamping block 2 has an inclined surface on its opposite side. A pressure sensor 201, electrically connected to the control terminal, is mounted on the inclined surface of each clamping block 2. The housing 1 has several electromagnetic rails. Electromagnetic sliders 3, which slide within the corresponding electromagnetic rails on the clamping blocks 2, are fixed to the clamping blocks 1 and electrically connected to the control terminal. A connecting frame 4 is fixed to the housing 1. A first electric slide 5 is slidably connected to the connecting frame 4. A second electric slide 6 is slidably connected to the first electric slide 5. A support frame 7 is fixed to the second electric slide 6. The support frame 7 is connected to the circuit board. The contact area is a smooth surface to reduce the friction on the circuit board during the movement of the support frame 7. The second electric slide 6 is slidably connected to the third electric slide 8. The first electric slide 5, the second electric slide 6, and the third electric slide 8 are all electrically connected to the control terminal. The first electric slide 5 is used to drive the second electric slide 6 to move back and forth, so that the third electric slide 8 can move back and forth. The second electric slide 6 is used to drive the support frame 7 and the third electric slide 8 to move left and right. The third electric slide 8 is fixedly connected to the housing 9 and is used to drive the housing 9 to move up and down. The housing 9 is rotatably connected to a rotating shaft 10, and a drill bit 11 is installed on the rotating shaft 10. In this embodiment... The existing drive device drives the rotating shaft 10 to rotate, causing the drill bit 11 to rotate. The rotating shaft 10 is slidably and rotatably connected to the rotating cylinder 12. The rotating cylinder 12 is rotatably connected to the upper pressure plate 13. The upper pressure plate 13 is slidably connected to the lower pressure plate 15. An airbag 14 is fixed between the upper pressure plate 13 and the lower pressure plate 15. The lower pressure plate 15 is rotatably connected to the rotating pressure ring 1501. The axis of rotation of the drill bit 11, the central axis of the rotating cylinder 12, and the central axis of the rotating pressure ring 1501 are all collinear. A compression spring is fixed between the rotating pressure ring 1501 and the rotating cylinder 12. When drilling is required on the circuit board, the circuit board is clamped by all the clamping blocks 2. The rotating pressure ring 1501 and the rotating cylinder 12 are clamped together. There is a distance between the circuit boards, and the pressure sensor 201 is in contact with the circuit board. When the circuit board is subjected to force and has a tendency to move during the drilling process, the pressure on the pressure sensor 201 changes. At this time, the upper pressure plate 13 drives the air bag 14 and the lower pressure plate 15 to move downward, and the electromagnetic slider 3 drives the corresponding clamping block 2 to move. The clamping block 2 no longer clamps the circuit board, and the circuit board is clamped by the rotating pressure ring 1501 and the support frame 7. When the circuit board is subjected to force and twists around the drilling point, the circuit board drives the rotating pressure ring 1501 to rotate, reducing the probability of damage to the circuit board at the drilling point or even deformation of the circuit board, thereby ensuring the accuracy of the circuit board drilling and improving the quality of the circuit board drilling.

[0021] like Figure 6As shown, a sliding plate 16 is slidably connected inside the clamping block 2. A return spring is fixed between the sliding plate 16 and the adjacent clamping block 2. When the clamping block 2 clamps the circuit board, because the clamping block 2 is provided with an inclined surface, the thinner the circuit board, the deeper the circuit board is inserted into the clamping block 2. That is, the thinner the circuit board, the greater the distance the sliding plate 16 moves under the pressure of the circuit board. A pneumatic rod 17 is fixed inside the clamping block 2. The telescopic part of the pneumatic rod 17 is fixed to the adjacent sliding plate 16. The pneumatic rod 17 is connected to the air bag 14. The greater the moving distance of the sliding plate 16, the greater the contraction distance of the telescopic part of the pneumatic rod 17. The more gas the pneumatic rod 17 squeezes into the air bag 14, and the greater the downward movement distance of the lower pressure plate 15 compared to the upper pressure plate 13. This maintains the distance between the rotating pressure ring 1501 and circuit boards of different thicknesses, ensuring the trigger speed of the rotating pressure ring 1501 when it moves downward during the drilling process of circuit boards of different thicknesses.

[0022] like Figure 6 As shown, the clamping block 2 is slidably connected to a pressure strip 18. The pressure strip 18 is driven by a transmission component to the adjacent sliding plate 16. The transmission component consists of two racks and a gear. The two racks are fixedly connected to the pressure strip 18 and the sliding plate 16 respectively. The gear is rotatably connected to the clamping block 2. The pressure strip 18 is slidably connected to several sliding rods 19. When fixing the circuit board, the movement of the sliding plate 16 drives the pressure strip 18. The thinner the circuit board, the greater the downward distance the pressure strip 18 moves. Different types of circuit boards are clamped. Before drilling the circuit board using this device, the position of the sliding rods 19 is adjusted so that the sliding rods 19 do not interfere with the drilling position of the circuit board. The sliding rods 19 are used to press the upper side of the circuit board to ensure the flatness of the circuit board surface, thereby ensuring the accuracy of the circuit board drilling and improving the quality of the circuit board drilling.

[0023] like Figure 6 and Figure 7 As shown, the housing 9 is equipped with an electric telescopic rod 20 that is electrically connected to the control terminal. The telescopic part of the electric telescopic rod 20 is fixedly connected to the upper pressure plate 13. The rotating cylinder 12 is rotatably connected to a second gear 25, and the second gear 25 is splinedly connected to the rotating shaft 10.

[0024] The specific workflow is as follows: When the operator needs to use this device to drill holes in the circuit board, the circuit board is placed between the four clamping blocks 2. All electromagnetic sliders 3 are turned on through the control terminal. The electromagnetic sliders 3 drive the clamping blocks 2 to move. All clamping blocks 2 move in opposite directions to clamp the circuit board, so that the pressure sensor 201 is in contact with the circuit board. All electromagnetic sliders 3 are turned off and the pressure sensor 201 is turned on through the control terminal.

[0025] After the circuit board is clamped, the operator activates the first electric slide 5, the second electric slide 6, and the third electric slide 8 via the control terminal. The movement of these slides adjusts the left-right, front-back, and height positions of the third electric slide 8, causing the housing 9 to move the drill bit 11 via the rotating shaft 10. Once the drill bit 11 reaches the designated drilling position, the operator controls the third electric slide 8 to move downwards. The third electric slide 8, through the housing 9 and the rotating shaft 10, moves the drill bit 11 downwards. Simultaneously, the existing drive device rotates the rotating shaft 10, causing the drill bit 11 to rotate. The drill bit 11 moves downwards and rotates, drilling a hole in the circuit board. Then, the third electric slide 8 moves the housing 9, the rotating shaft 10, and the drill bit 11 upwards. Using the movement of the first electric slide 5, the second electric slide 6, and the third electric slide 8, the drill bit 11 moves to the next drilling position. This process is repeated to drill holes at various locations on the circuit board.

[0026] During the drilling process of the circuit board, if the circuit board tends to move due to the torsional force generated by the drill bit 11, the pressure on the pressure sensor 201 changes. The pressure sensor 201 transmits a signal to the control terminal, which controls the electric telescopic rod 20 to open. The telescopic part of the electric telescopic rod 20 drives the upper pressure plate 13 to move downward. The upper pressure plate 13 drives the airbag 14 and the lower pressure plate 15 to move downward. The electromagnetic slider 3 drives the clamping block 2 to move. The clamping block 2 no longer clamps the circuit board. The circuit board is clamped by the rotating pressure ring 1501 and the support frame 7. When the circuit board is subjected to force and twists around the drilled hole, the circuit board drives the rotating pressure ring 1501 to rotate, reducing the probability of damage to the circuit board at the drilled hole or even deformation of the circuit board. This ensures the accuracy of the circuit board drilling and improves the quality of the circuit board drilling.

[0027] When the circuit board moves, all electromagnetic sliders 3 are activated via the control terminal. The electromagnetic sliders 3 drive the clamping blocks 2 to move, straightening the circuit board so that drilling can continue.

[0028] During the clamping process of clamping the circuit board, clamping block 2 drives the pneumatic rod 17 and sliding plate 16 to move. The sliding plate 16 is subjected to the reaction force of the circuit board. Since clamping block 2 is provided with an inclined surface, the thinner the circuit board, the deeper the circuit board is inserted into clamping block 2. That is, the thinner the circuit board, the more distance the sliding plate 16 moves under the pressure of the circuit board. The more distance the sliding plate 16 moves, the more distance the telescopic part of the pneumatic rod 17 contracts. The more gas the pneumatic rod 17 squeezes into the air bag 14, and the more distance the lower pressure plate 15 moves downward relative to the upper pressure plate 13. This is to maintain the distance between the rotating pressure ring 1501 and circuit boards of different thicknesses, and to ensure the trigger speed of the rotating pressure ring 1501 when it moves downward during the drilling process of circuit boards of different thicknesses.

[0029] During the process of fixing the circuit board and moving the sliding plate 16, the movement of the sliding plate 16 drives the pressure bar 18. The thinner the circuit board, the greater the downward movement of the pressure bar 18, thus pressing the upper side of different types of circuit boards. Furthermore, before drilling holes in the circuit board using this device, the position of the sliding rod 19 is adjusted so that the sliding rod 19 does not interfere with the drilling position of the circuit board. The sliding rod 19 is used to press the upper side of the circuit board to ensure the flatness of the circuit board surface, thereby ensuring the accuracy of the circuit board drilling and improving the quality of the circuit board drilling.

[0030] After the circuit board is drilled, all electromagnetic sliders 3 are activated via the control terminal. The electromagnetic sliders 3 drive the clamping blocks 2 to reset. The operator collects the drilled circuit board and then turns off the pressure sensor 201, electromagnetic sliders 3, first electric slide 5, second electric slide 6 and third electric slide 8.

[0031] Example 2: Based on Example 1 above, as follows Figure 5 and Figure 7As shown, the housing 9 is equipped with a motor 21 electrically connected to the control terminal. A first bevel gear 22 is fixedly connected to the output shaft of the motor 21. Two first gears 23, symmetrically distributed vertically, are rotatably connected to the housing 9. The first gears 23 are used to drive a second gear 25. A second bevel gear 24 is coaxially connected to the first gears 23. In the above embodiment, the rotating shaft 10 is driven by an existing drive device. In this embodiment, no existing drive device is required; the rotation is achieved through the output shaft of the motor 21, the first bevel gear 22, one of the second bevel gears 24, and one of the first bevel gears 25. Gear 23 drives the second gear 25. The symmetrically distributed second bevel gears 24 all mesh with the first bevel gear 22. Initially, the second gear 25 meshes with the upper first gear 23. When the circuit board is subjected to force and has a deformation tendency during drilling, and the pressure on the pressure sensor 201 changes, the telescopic part of the electric telescopic rod 20 extends and drives the rotating cylinder 12 to move downward through the upper pressure plate 13. The rotating cylinder 12 drives the second gear 25 to move downward. When the airbag 14 drives the rotating pressure ring 1501 to move downward through the lower pressure plate 15 to press the circuit board, the clamping block... 2. After the circuit board is no longer clamped, the second gear 25 quickly disengages from the upper first gear 23, causing the rotating shaft 10 to stop driving the drill bit 11 to rotate. As the rotating cylinder 12 moves downwards, the second gear 25 moves to engage with the lower first gear 23 (the output shaft of the motor 21 drives the second gear 25 through the first bevel gear 22, the lower second bevel gear 24, and the lower first gear 23, causing the second gear 25 to drive the drill bit 11 to reverse direction via the rotating shaft 10). During the downward movement of the upper pressure plate 13, the upper pressure plate 13 squeezes the gas out of the airbag 14. The pneumatic rod 17 extends and drives the sliding plate 16 to move. The sliding plate 16 is used to straighten and reset the circuit board. When the circuit board is subjected to torsional force and there is a tendency to tilt, the clamping on the circuit board is released and the circuit board is actively rotated around the current drilling position, reducing the probability of damage to the circuit board. The drill bit 11 is reversed to perform reverse grinding on the drilled area, reducing the difficulty of drilling and making it easier to drill again. During the reverse drilling process, the sliding plate 16 is used to straighten and reset the circuit board, improving the stability of the circuit board drilling.

[0032] Example 3: Based on Example 2 above, as follows Figure 6 and Figure 7As shown, a guide platform 26 is fixedly connected to the support frame 7. The guide platform 26 is conical and its diameter gradually increases from top to bottom. In the above embodiment, the support frame 7 supports the lower side of the circuit board. The support frame 7 is provided with a plurality of circumferentially distributed through holes 27. The guide platform 26 is located between all the through holes 27. The guide platform 26 is used to guide the drilling debris into the through holes 27 for easy collection of the debris. A sliding ring 29 is slidably connected to the support frame 7. The guide platform 26 and all the through holes 27 are located inside the sliding ring 29. A plurality of circumferentially evenly distributed rotating balls 30 are rotatably connected to the upper side of the sliding ring 29. In this example, the circuit board does not need to be supported by the support frame 7. Instead, the circuit board is supported by the rotating ball 30. An elastic element 28 is fixed between the sliding ring 29 and the support frame 7. The elastic element 28 is a compression spring. When the circuit board presses against the rotating ball 30, the elastic element 28 is in a compressed state to increase the stability of the circuit board when it is clamped. When the support frame 7 moves, causing the rotating ball 30 to move relative to the circuit board, the rotation of the rotating ball 30 reduces the friction force on the circuit board, thereby reducing the probability of the circuit board being worn. The central axis of the sliding ring 29, the central axis of the guide table 26, and the axis of rotation of the drill bit 11 are collinear.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A circuit board drilling device with a stable clamping structure, characterized in that, The device includes a housing (1), which is slidably connected to four clamping blocks (2). Each of the four clamping blocks (2) has an inclined surface on its opposite side. A pressure sensor (201) is installed on the inclined surface of each clamping block (2). The housing (1) is provided with several electromagnetic slide rails. Each clamping block (2) is fixedly connected to an electromagnetic slider (3) that slides within the corresponding electromagnetic slide rail on the housing (1). The housing (1) is fixedly connected to a connecting frame (4). The connecting frame (4) is slidably connected to a first electric slide (5). The first electric slide (5) is slidably connected to a second electric slide (6). The second electric slide (6) is fixedly connected to a support frame (7). A third electric slide (8) is slidably connected to the housing (9), which is fixedly connected to the housing (9). A rotating shaft (10) is rotatably connected to the housing (9). A drill bit (11) is installed on the rotating shaft (10). A rotating cylinder (12) is slidably and rotatably connected to the rotating shaft (10). An upper pressure plate (13) is rotatably connected to the rotating cylinder (12). A lower pressure plate (15) is slidably connected to the upper pressure plate (13) and the lower pressure plate (15). An airbag (14) is fixedly connected between the upper pressure plate (13) and the lower pressure plate (15). A rotating pressure ring (1501) is rotatably connected to the lower pressure plate (15). A compression spring is fixedly connected between the rotating pressure ring (1501) and the rotating cylinder (12).

2. The circuit board drilling device with a stable clamping structure according to claim 1, characterized in that, A sliding plate (16) is slidably connected inside the clamping block (2). A return spring is fixed between the sliding plate (16) and the adjacent clamping block (2). A pneumatic rod (17) is fixed inside the clamping block (2). The telescopic part of the pneumatic rod (17) is fixed to the adjacent sliding plate (16). The pneumatic rod (17) is connected to the airbag (14).

3. A circuit board drilling device with a stable clamping structure according to claim 2, characterized in that, The clamping block (2) is slidably connected to a pressure strip (18), and the pressure strip (18) is driven by a transmission component to the adjacent sliding plate (16).

4. A circuit board drilling device with a stable clamping structure according to claim 3, characterized in that, The pressure strip (18) is slidably connected to several sliding rods (19).

5. A circuit board drilling device with a stable clamping structure according to claim 1, characterized in that, The housing (9) is equipped with an electric telescopic rod (20), the telescopic part of the electric telescopic rod (20) is fixedly connected to the upper pressure plate (13), and the rotating cylinder (12) is rotatably connected to a second gear (25), which is splinedly connected to the rotating shaft (10).

6. A circuit board drilling device with a stable clamping structure according to claim 5, characterized in that, The housing (9) is equipped with a motor (21), and the output shaft of the motor (21) is fixedly connected to a first bevel gear (22). The housing (9) is rotatably connected to a symmetrically distributed first gear (23), which is used to drive the second gear (25). The first gear (23) is coaxially connected to a second bevel gear (24), and the symmetrically distributed second bevel gears (24) all mesh with the first bevel gear (22).

7. A circuit board drilling device with a stable clamping structure according to claim 1, characterized in that, The support frame (7) is fixedly connected to a guide platform (26), and the support frame (7) is provided with a plurality of through holes (27) distributed circumferentially, and the guide platform (26) is located between all the through holes (27).

8. A circuit board drilling device with a stable clamping structure according to claim 7, characterized in that, The support frame (7) is slidably connected to a sliding ring (29), the guide platform (26) is located between all the through holes (27), the guide platform (26) and all the through holes (27) are located inside the sliding ring (29), and an elastic element (28) is fixedly connected between the sliding ring (29) and the support frame (7).

9. A circuit board drilling device with a stable clamping structure according to claim 8, characterized in that, The central axis of the sliding ring (29), the central axis of the guide plate (26), and the axis of rotation of the drill bit (11) are collinear.

10. A circuit board drilling device with a stable clamping structure according to claim 9, characterized in that, The sliding ring (29) has several circumferentially evenly distributed rotating balls (30) rotatably connected to one side of the sliding ring (29) near the drill bit (11).

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