Multi-layer circuit board drilling positioning structure
By designing a multi-layer circuit board drilling positioning structure, the connecting rod and bearing are driven by rotary threaded collars to achieve positioning of the drill bit, solving the problems of poor stability and large errors caused by drill bit shaking, and significantly improving the stability and accuracy of the drill hole.
Patent Information
- Application Number
- CN202421798622.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-29
AI Technical Summary
During the drilling process of multi-layer circuit boards in existing drilling machines, the drill bit is prone to shaking, resulting in poor stability and large drilling errors, resulting in a large number of bad products.
A multi-layer circuit board drilling positioning structure is designed, and the connecting rod, sleeve and bearing are driven by rotating the threaded sleeve ring, and move up and down along the outer surface of the drill bit body to position the drill bits of different lengths to avoid shaking the drill bits.
It greatly improves the stability of circuit board drilling, reduces drilling errors, and reduces the generation of defective products.
Smart Images
Figure CN222819137U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit board processing, in particular to a multi-layer circuit board drilling positioning structure. Background Art
[0002] A multilayer circuit board is a printed circuit board with multiple conductive layers, which are connected by insulating layers and through holes. This design allows more components and circuits to be arranged in a limited space on the multilayer circuit board, thereby achieving higher integration and more complex circuit design. At the same time, the multilayer circuit board has at least three conductive layers, two of which are on the outer surface, and the remaining one or more layers are synthesized in the insulating board. These conductive layers are separated by insulating layers to ensure electrical isolation. In order to install the finished circuit board and position the components for welding, circuit board drilling is a common process in the processing of multilayer circuit boards.
[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: during the current drilling operation of a multi-layer circuit board by a drilling machine, the drill bit is inserted into the main shaft, so the drill bit rotates at high speed for a long time, which is prone to shaking, thereby reducing stability and increasing the drilling error of the circuit board, resulting in a large number of defective products. Therefore, we propose a multi-layer circuit board drilling positioning structure to solve the above-mentioned problems. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a multi-layer circuit board drilling positioning structure, which solves the problem that the drill bit is prone to shaking when the drilling machine is operated for a long time, thereby reducing stability and increasing the circuit board drilling error, thereby causing a large number of defective products.
[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a multi-layer circuit board drilling positioning structure, including a drilling machine body and a drill bit body, a main shaft body is installed at the bottom of the drilling machine body, a fixed sleeve is installed at the bottom of the main shaft body, the drill bit body is installed inside the fixed sleeve, the external threaded sleeve of the main shaft body is connected with a threaded ring, and more than one connecting rod is fixedly installed on the outer surface of the threaded ring, and the other end of the connecting rod is fixedly connected with a sleeve, the interior of the sleeve is provided with a bearing, and the bearing is in contact with the outer wall of the drill bit body.
[0006] Preferably, a thread groove is formed on the outer surface of the main shaft body, and the threaded collar is sleeved on the inner wall of the thread groove.
[0007] Preferably, the number of the connecting rods is three, and the three connecting rods are all fixedly mounted on the outer wall of the threaded collar, while the other ends of the three connecting rods are fixedly connected to the outer wall of the sleeve.
[0008] Preferably, the bearing is sleeved on the outer surface of the drill body, and the inner diameter of the bearing is matched with the outer diameter of the drill body.
[0009] Preferably, an oil filling hole is provided at the top of the sleeve, and the oil filling hole is communicated with the inner wall of the bearing.
[0010] Preferably, a raised retaining ring is provided at the bottom of the main shaft body, and the outer diameter of the raised retaining ring is greater than the inner diameter of the threaded collar.
[0011] Preferably, the outer surface of the thread groove formed on the outer wall of the main shaft body is coated with an anti-corrosion coating.
[0012] Beneficial Effects
[0013] The utility model provides a multi-layer circuit board drilling positioning structure. Compared with the prior art, it has the following beneficial effects:
[0014] The multi-layer circuit board drilling positioning structure rotates the threaded collar, and under the action of the thread, drives the connecting rod, the sleeve and the bearing to move up and down along the outer surface of the drill body, thereby positioning the drill bodies of different lengths, and preventing the drill body from shaking when drilling holes in the circuit board, thereby greatly improving the stability of the circuit board drilling performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the installation of local parts of the overall structure of the utility model;
[0018] Figure 4 It is a schematic cross-sectional view of the overall structure of the utility model.
[0019] In the figure: 1. Drilling machine body; 2. Spindle body; 3. Drill bit body; 4. Sleeve; 5. Fixed sleeve; 6. Thread groove; 7. Threaded collar; 8. Bearing; 9. Connecting rod; 10. Oil filling hole. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-4 The utility model provides a technical solution: a multi-layer circuit board drilling positioning structure, including a drilling machine body 1 and a drill bit body 3, a main shaft body 2 is installed at the bottom of the drilling machine body 1, a fixing sleeve 5 is installed at the bottom of the main shaft body 2, the drill bit body 3 is installed inside the fixing sleeve 5, the external thread sleeve of the main shaft body 2 is connected with a threaded collar 7, and more than one connecting rod 9 is fixedly installed on the outer surface of the threaded collar 7, and the other end of the connecting rod 9 is fixedly connected with a sleeve 4, a bearing 8 is sleeved inside the sleeve 4, and the bearing 8 is in contact with the outer wall of the drill bit body 3.
[0022] The drill body 3 can be installed through the fixing sleeve 5. Since the fixing sleeve 5 is fixedly installed on the bottom of the main shaft body 2, and the main shaft body 2 is threadedly sleeved with a threaded ring 7, the upper and lower ends of the connecting rod 9 are respectively fixedly installed on the outer surfaces of the threaded ring 7 and the sleeve 4, and the bearing 8 is sleeved on the inner wall of the sleeve 4, so that the threaded ring 7 is rotated. Under the action of the thread, the threaded ring 7 can respectively drive the connecting rod 9, the sleeve 4 and the bearing 8 to move up and down along the outer surface of the drill body 3, so as to position the drill body 3 of different lengths, avoid shaking of the drill body 3 when drilling holes in the circuit board, and improve the stability of drilling holes in the multi-layer circuit board.
[0023] See also Figure 1 , Figure 2 A thread groove 6 is provided on the outer surface of the main shaft body 2, and a threaded ring 7 is sleeved on the inner wall of the threaded groove 6. There are three connecting rods 9, and the three connecting rods 9 are all fixedly installed on the outer wall of the threaded ring 7. At the same time, the other ends of the three connecting rods 9 are fixedly connected to the outer wall of the sleeve 4.
[0024] The threaded collar 7 can be installed through the main shaft body 2, so that the threaded collar 7 is rotated to make the threaded collar 7 move up and down along the thread groove 6. Since the upper and lower ends of the three connecting rods 9 are fixedly connected to the threaded collar 7 and the connecting rod 9, when the threaded collar 7 moves up and down, it can respectively drive the three connecting rods 9, the sleeve 4 and the bearing 8 to slide along the outer surface of the drill body 3, so that the bearing 8 can position the drill body 3 of different lengths.
[0025] See also Figure 3 , Figure 4 The bearing 8 is sleeved on the outer surface of the drill body 3, and the inner diameter value of the bearing 8 is matched with the outer diameter value of the drill body 3. An oil filling hole 10 is opened on the top of the sleeve 4, and the oil filling hole 10 is connected to the inner wall of the bearing 8.
[0026] The bearing 8 is sleeved on the outer surface of the drill body 3, and the bearing 8 is sleeved on the inner wall of the sleeve 4, so that when the drill body 3 drills a hole in the circuit board, the bearing 8 can limit the drill body 3, thereby preventing the drill body 3 from shaking after the drill body 3 has worked for a long time, thereby affecting the drilling quality of the circuit board. Since an oil filling hole 10 is opened on the top of the sleeve 4, and the oil filling hole 10 is connected with the inner wall of the bearing 8, after the lubricating oil is added to the inside of the oil filling hole 10, the lubricating oil can reach the surface of the bearing 8 along the oil filling hole 10. The lubricating oil can reduce the friction power consumption and wear of the bearing 8, and can also play a role in cooling, dust prevention and rust prevention, thereby extending the service life of the device.
[0027] See also Figure 2 , Figure 4 A raised retaining ring is provided at the bottom of the main shaft body 2, and the outer diameter of the raised retaining ring is greater than the inner diameter of the threaded collar 7, and the outer surface of the threaded groove 6 provided on the outer wall of the main shaft body 2 is coated with an anti-corrosion coating.
[0028] A raised retaining ring is arranged at the bottom of the main shaft body 2, which can limit the threaded collar 7, and an anti-corrosion coating is coated on the outer surface of the threaded groove 6. The anti-corrosion coating can reduce the maintenance requirements, thereby reducing the burden and cost of maintenance work, and can also increase the gloss and texture, making it more beautiful.
[0029] During operation, the drill body 3 can be installed through the fixing sleeve 5. Since the fixing sleeve 5 is fixedly installed on the bottom of the main shaft body 2, and the main shaft body 2 is threadedly sleeved with a threaded ring 7, the upper and lower ends of the connecting rod 9 are respectively fixedly installed on the outer surfaces of the threaded ring 7 and the sleeve 4, and the bearing 8 is sleeved on the inner wall of the sleeve 4, so that the threaded ring 7 is rotated. Under the action of the thread, the threaded ring 7 can respectively drive the connecting rod 9, the sleeve 4 and the bearing 8 to move up and down along the outer surface of the drill body 3, and then the drill body 3 of different lengths can be positioned to avoid shaking of the drill body 3 when drilling holes in the circuit board, and at the same time improve the stability of drilling holes in the multi-layer circuit board.
[0030] The threaded collar 7 can be installed through the main shaft body 2, so that the threaded collar 7 is rotated to make the threaded collar 7 move up and down along the thread groove 6. Since the upper and lower ends of the three connecting rods 9 are fixedly connected to the threaded collar 7 and the connecting rod 9, when the threaded collar 7 moves up and down, it can respectively drive the three connecting rods 9, the sleeve 4 and the bearing 8 to slide along the outer surface of the drill body 3, so that the bearing 8 can position the drill body 3 of different lengths.
[0031] The bearing 8 is sleeved on the outer surface of the drill body 3, and the bearing 8 is sleeved on the inner wall of the sleeve 4, so that when the drill body 3 drills a hole in the circuit board, the bearing 8 can limit the drill body 3, thereby preventing the drill body 3 from shaking after the drill body 3 has worked for a long time, thereby affecting the drilling quality of the circuit board. Since an oil filling hole 10 is opened on the top of the sleeve 4, and the oil filling hole 10 is connected with the inner wall of the bearing 8, after the lubricating oil is added to the inside of the oil filling hole 10, the lubricating oil can reach the surface of the bearing 8 along the oil filling hole 10. The lubricating oil can reduce the friction power consumption and wear of the bearing 8, and can also play a role in cooling, dust prevention and rust prevention, thereby extending the service life of the device.
[0032] A raised retaining ring is arranged at the bottom of the main shaft body 2, which can limit the threaded collar 7, and an anti-corrosion coating is coated on the outer surface of the threaded groove 6. The anti-corrosion coating can reduce the maintenance requirements, thereby reducing the burden and cost of maintenance work, and can also increase the gloss and texture, making it more beautiful.
[0033] In summary, the device rotates the threaded collar 7, and under the action of the threaded groove 6, drives the connecting rod 9, the sleeve 4 and the bearing 8 respectively to move up and down along the outer surface of the drill body 3, thereby being able to position the drill body 3 of different lengths, and at the same time avoiding the shaking of the drill body 3 when drilling a hole in the circuit board, thereby greatly improving the stability of drilling holes in the circuit board.
[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
Claims
1. A multi-layer circuit board drilling positioning structure, comprising a drilling machine body (1) and a drill head body (3), characterized in that: A main shaft (2) is installed at the bottom of the drilling machine body (1), a fixing sleeve (5) is installed at the bottom of the main shaft (2), the drill head body (3) is installed inside the fixing sleeve (5), the external thread sleeve of the main shaft body (2) is connected with a threaded collar (7), and more than one connecting rod (9) is fixedly installed on the outer surface of the threaded collar (7), and the other end of the connecting rod (9) is fixedly connected with a sleeve (4), the interior of the sleeve (4) is provided with a bearing (8), and the bearing (8) is in contact with the outer wall of the drill head body (3).
2. A multi-layer circuit board drilling positioning structure according to claim 1, characterized in that: The outer surface of the main shaft body (2) is provided with a thread groove (6), and the threaded collar (7) is sleeved on the inner wall of the thread groove (6).
3. A multi-layer circuit board drilling positioning structure according to claim 1, characterized in that: The number of the connecting rods (9) is three, and the three connecting rods (9) are all fixedly mounted on the outer wall of the threaded collar (7), while the other ends of the three connecting rods (9) are fixedly connected to the outer wall of the sleeve (4).
4. A multi-layer circuit board drilling positioning structure according to claim 1, characterized in that: The bearing (8) is sleeved on the outer surface of the drill bit body (3), and the inner diameter value of the bearing (8) is matched with the outer diameter value of the drill bit body (3).
5. A multi-layer circuit board drilling positioning structure according to claim 1, characterized in that: An oil injection hole (10) is provided at the top of the sleeve (4), and the oil injection hole (10) is communicated with the inner wall of the bearing (8).
6. A multi-layer circuit board drilling positioning structure according to claim 1, characterized in that: A raised retaining ring is provided at the bottom of the main shaft body (2), and the outer diameter of the raised retaining ring is greater than the inner diameter of the threaded collar (7).
7. A multi-layer circuit board drilling positioning structure according to claim 2, characterized in that: The outer surface of the thread groove (6) formed on the outer wall of the main shaft body (2) is coated with an anti-corrosion coating.