Punching drill bit for processing PCB (Printed Circuit Board)

Abstract

The utility model discloses a punching drill bit for processing a PCB (Printed Circuit Board). The punching drill bit comprises a connecting rod, a fixed disc and a supporting assembly, wherein the fixed disc is arranged above the connecting rod in a threaded manner; the supporting assembly is arranged above the fixed disc; a drill bit is installed above the fixing disc in a threaded mode, and a fixing structure is arranged at the joint of the connecting rod and the drill bit. Connection of the supporting disc on one side of the supporting rods is achieved through the multiple supporting rods of the supporting assembly, the supporting effect of the drill bit in the punching process is achieved through the supporting disc and the auxiliary fixing plate arranged in the middle of the supporting disc, and the detachable installation effect between the drill bit and the connecting rod is achieved through the fixing structure.

Description

Technical Field

[0001] This utility model relates to a drilling bit, specifically a drilling bit for processing PCB circuit boards, and belongs to the field of drilling bit technology. Background Technology

[0002] A PCB (Printed Circuit Board) is a support structure for electronic components, used to achieve electrical connections between them. During the manufacturing process of a PCB, it is generally necessary to use drill bits to make holes on the surface of the PCB to facilitate the mounting of electronic components.

[0003] In existing technologies, such as the PCB board processing drill bit disclosed in CN217775669U, a chisel edge grinding and a second cutting face grinding are added at specific positions on the basis of the existing single-flute drill bit. The chisel edge grinding can increase the cutting edge length, which can increase the service life of the single-flute drill when the cutting face wear is large for high Tg and halogen-free boards.

[0004] However, in actual use, when using the drill bit for processing the aforementioned PCB board, although it is possible to increase the service life of the single-edged drill by adding chisel edge grinding and second face grinding at specific positions, and chisel edge grinding can increase the cutting edge length, the drill bit generally needs to be held manually during the drilling process. If the drill bit is tilted during the drilling process, it is easy to cause the PCB board drilling failure. Utility Model Content

[0005] This utility model addresses the problem that, while drill bits used in PCB board processing can increase the lifespan of a single-blade drill by adding cross-cutting and second-face grinding at specific locations, the drilling process generally requires manual holding of the drill bit. If the drill bit becomes misaligned during the drilling process, it can easily lead to drilling failure. Therefore, this invention provides a drilling drill bit for processing PCB boards.

[0006] The present invention achieves the above objectives through the following technical solution: a drilling bit for processing PCB circuit boards, including a connecting rod, a fixed plate threaded on the connecting rod and a support assembly on the fixed plate, the drill bit being threaded on the top of the fixed plate, and a fixing structure being provided at the connection between the connecting rod and the drill bit.

[0007] The support assembly includes multiple support rods, which are fixedly installed on the surface of the fixed plate. The support plate is fixedly connected to the side of the support rod away from the fixed plate. An auxiliary fixing plate is set in the middle of the support plate. A rotating rod is rotatably installed on the outer side of the auxiliary fixing plate through a bearing. A tension spring is sleeved on the outer side of the rotating rod.

[0008] Preferably, the outer side of the rotating rod is threaded, and the support plate and the rotating rod are connected by a thread.

[0009] Preferably, one end of the tension spring is fixedly mounted on the auxiliary fixing plate, and the other end is fixedly mounted on the inner side of the support plate.

[0010] Preferably, the fixing structure includes a pull plate, with limit rods fixedly installed at both ends of the inner side of the pull plate, and a compression spring sleeved on the outer side of the limit rod, with the other end of the compression spring fixedly installed inside the connecting rod.

[0011] Preferably, one end of the limiting rod passes through the connecting rod and the drill bit, and a limiting groove matching the limiting rod is provided at the connection between the drill bit and the limiting rod, and the limiting groove is provided on the drill bit.

[0012] Preferably, the drill bit includes a drill body and a drill tip, with the drill tip fixedly installed on the top of the drill body, and a cutting section provided on the outer side of the drill body, the cutting section being threaded on the outer side of the drill body.

[0013] Preferably, both the fixing plate and the support assembly are made of rigid plastic.

[0014] The beneficial effects of this utility model are:

[0015] 1) The support plate on one side of the support rod is connected by multiple support rods of the support component, and the support plate and the auxiliary fixing plate set in the middle of the support plate provide support during the drilling process of the drill bit. During the use of the auxiliary fixing plate, the rotating rod can be rotated to push and pull the auxiliary fixing plate, thus avoiding the auxiliary fixing plate from contacting the drill bit and thus avoiding affecting the operation of the drill bit.

[0016] 2) By pulling the set pull plate, the pull plate moves the limit rod inside the connecting rod. When installing the drill bit, it can pull the pull plate to make the limit rod disengage from the inside of the connecting rod. After the drill bit is installed, the pull plate is released, the compression spring pulls back the limit rod, and the limit rod is inserted into the limit groove of the drill bit, thereby achieving the effect of fixing the drill bit and preventing the drill bit from falling off the connecting rod during the drilling process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the drill bit and the fixed plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of some of the support components of this utility model;

[0020] Figure 4 This is a structural diagram of the fixing plate, connecting rod, and fixing structure of this utility model.

[0021] In the diagram: 1. Connecting rod; 2. Fixing plate; 3. Support assembly; 301. Support rod; 302. Supporting plate; 303. Auxiliary fixing plate; 304. Rotating rod; 305. Tension spring; 4. Drill bit; 5. Fixing structure; 501. Pull plate; 502. Limiting rod; 503. Compression spring; 6. Drill body; 7. Drill tip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1, as Figures 1 to 4 As shown, this embodiment provides a drilling bit for processing PCB circuit boards, including a connecting rod 1, a fixed plate 2 threadedly installed on the connecting rod 1, and a support assembly 3 on the fixed plate 2. The fixed plate 2 and the support assembly 3 are both made of rigid plastic. A drill bit 4 is threadedly installed on the top of the fixed plate 2, and a fixing structure 5 is provided at the connection between the connecting rod 1 and the drill bit 4.

[0024] The support assembly 3 includes multiple support rods 301, which are fixedly installed on the surface of the fixed plate 2. A support plate 302 is fixedly connected to the side of the support rod 301 away from the fixed plate 2. An auxiliary fixing plate 303 is provided in the middle of the support plate 302. A rotating rod 304 is rotatably installed on the outer side of the auxiliary fixing plate 303 through a bearing. A tension spring 305 is sleeved on the outer side of the rotating rod 304. The outer side of the rotating rod 304 is threaded, and the support plate 302 and the rotating rod 304 are threadedly connected. One end of the tension spring 305 is fixedly installed on the auxiliary fixing plate 303, and the other end is fixedly installed on the inner side of the support plate 302.

[0025] Example 2, in addition to all the technical features of Example 1, also includes: the fixing structure 5 includes a pull plate 501, with limit rods 502 fixedly installed at both ends of the inner side of the pull plate 501, and a compression spring 503 sleeved on the outer side of the limit rod 502. The other end of the compression spring 503 is fixedly installed inside the connecting rod 1. One end of the limit rod 502 passes through the connecting rod 1 and the drill bit 4, and a limiting groove matching the limit rod 502 is provided at the connection between the drill bit 4 and the limit rod 502. A limiting groove is provided on the drill bit 4. By pulling the pull plate 501, the limiting rod 502 is moved inside the connecting rod 1. When the drill bit 4 is installed, it can pull the pull plate 501 to make the limiting rod 502 disengage from the inside of the connecting rod 1. After the drill bit 4 is installed, the pull plate 501 is released, and the compression spring 503 pulls back the limiting rod 502, so that the limiting rod 502 is inserted into the limiting groove of the drill bit 4, thereby achieving the effect of fixing the drill bit 4 and preventing the drill bit 4 from falling off the connecting rod 1 during the drilling process.

[0026] The drill bit 4 includes a drill body 6 and a drill tip 7. The drill tip 7 is fixedly installed on the top of the drill body 6, and a cutting part is provided on the outside of the drill body 6. The cutting part is threaded on the outside of the drill body 6. The drill tip 7 can realize the drilling effect on the PCB circuit board, and after the drilling is completed, the subsequent drilling effect is achieved through the cutting part on the outside of the drill body 6.

[0027] First, thread the fixing plate 2 onto the connecting rod 1. Then, thread the drill bit 4 onto the fixing plate 2 and the connecting rod 1. During installation, pull the pull plate 501 to disengage the limiting rod 502 from the connecting rod 1. After the drill bit 4 is installed, release the pull plate 501 to pull the compression spring 503 back the limiting rod 502, causing it to insert into the limiting groove of the drill bit 4. This secures the drill bit 4 and prevents it from detaching from the connecting rod 1 during drilling. Next, install the connecting rod 1 onto the drive source that rotates the drill bit 4. Finally, place the support plate 302 on the PCB to be processed. Since the thickness of a PCB circuit board is generally not very thick, the length of the drill bit 4 will be slightly longer than that of the support plate 302. In this way, during the drilling process, the support plate 302 on the outside of the drill bit 4 can provide support for the overall structure when the drill body 6 continues to drill after the drill tip 7 has finished drilling. In addition, during the use of the auxiliary fixing plate 303, the rotating rod 304 can be rotated to push and pull the auxiliary fixing plate 303, thus preventing the auxiliary fixing plate 303 from contacting the drill bit 4 and thus avoiding affecting the operation of the drill bit 4. Finally, the rotating rod 304 can be fixed with a limit nut.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A punch drill for processing a PCB circuit board, characterized by: Including connecting rod (1), and the fixed disc (2) and the support assembly (3) above the fixed disc (2) are screw mounted above the connecting rod (1), the top of the fixed disc (2) is screw mounted with drill bit (4), and the connecting rod (1) is provided with fixing structure (5) at the connecting place of the drill bit (4); The support assembly (3) includes a plurality of support rods (301), the support rods (301) are fixedly installed on the surface of the fixed disc (2), the side of the support rod (301) away from the fixed disc (2) is fixedly connected with the support disc (302), the middle of the support disc (302) is provided with the auxiliary fixing plate (303), the outer side of the auxiliary fixing plate (303) is rotatably installed with the rotating rod (304) through the bearing, and the outer side of the rotating rod (304) is sleeved with the tension spring (305).

2. The piercing drill bit of claim 1, wherein: The outer side of the rotating rod (304) is provided with a thread, and the support disc (302) and the rotating rod (304) are screw connected.

3. The piercing drill bit of claim 1, wherein: One end of the tension spring (305) is fixedly installed on the auxiliary fixing plate (303), and the other end is fixedly installed on the inner side of the support disc (302).

4. The piercing drill bit of claim 1, wherein: The fixing structure (5) includes a pull plate (501), the two ends of the inner side of the pull plate (501) are fixedly installed with limit rods (502), the outer side of the limit rod (502) is sleeved with a compression spring (503), and the other end of the compression spring (503) is fixedly installed in the connecting rod (1).

5. The piercing drill bit of claim 4, wherein: One end of the limit rod (502) penetrates the connecting rod (1) and the drill bit (4), and the connecting place of the drill bit (4) and the limit rod (502) is provided with a limit groove matched with the limit rod (502), and the limit groove is arranged on the drill bit (4).

6. The piercing drill bit of claim 1 or 5, wherein: The drill bit (4) includes a drill body (6) and a drill tip (7), the drill tip (7) is fixedly installed on the top of the drill body (6), and the outer side of the drill body (6) is provided with a cutting part, and the cutting part is arranged in a threaded manner on the outer side of the drill body (6).

7. The piercing drill bit of claim 6, wherein: The fixed disc (2) and the support assembly (3) are made of hard plastic material.

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