High-rigidity pcb cemented carbide micro drill

Abstract

The utility model discloses a high rigid PCB hard alloy micro drill relates to PCB processing technical field, including hard alloy micro drill component and reinforced coating structure, the lower end surface of hard alloy micro drill component is covered with reinforced coating structure, and the upper end of hard alloy micro drill component is connected with support assembly, and the upper end of support assembly and hard alloy micro drill component junction installs and is connected with bearing seat component. The high rigid PCB hard alloy micro drill, through the structural characteristics of hard alloy micro drill component own material, cooperate in the reinforced coating structure that drills the blade structure, drill neck structure surface covers, can make whole hard alloy micro drill component has enough structural strength and wear resistance, thereby guarantees the service life, and support assembly and bearing seat component cooperation setting, in guaranteeing hard alloy micro drill component stable operation's simultaneously, can avoid hard alloy micro drill component to appear unnecessary structural damage when the machining operation, and also can not cause structural interference.

Description

Technical Field

[0001] This utility model relates to the field of PCB processing technology, specifically to a high-rigidity PCB cemented carbide micro-drill. Background Technology

[0002] PCB carbide micro drills are tiny-diameter drill bits used in the manufacturing process of printed circuit boards (PCBs), typically made of carbide. Carbide micro drills offer high hardness, high wear resistance, and high precision, making them suitable for high-precision drilling requirements.

[0003] PCB carbide micro drills refer to drill bits with a diameter of 0.35 mm or less, primarily used for micro-hole machining on printed circuit boards. The core component of this micro drill is the cutting edge, which is responsible for the actual drilling operation; the shank is used to connect to the drill press and transmit power; and the neck provides support and stability.

[0004] Conventional carbide micro drills are prone to structural damage due to their size and shape, which can affect the quality of machining operations. Utility Model Content

[0005] The purpose of this invention is to provide a high-rigidity PCB cemented carbide micro-drill to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-rigidity PCB cemented carbide micro-drill, comprising a cemented carbide micro-drill component and a reinforcing coating structure. The lower end surface of the cemented carbide micro-drill component is covered with the reinforcing coating structure, and the upper end of the cemented carbide micro-drill component is connected to a support assembly. Furthermore, a bearing seat component is installed and connected at the connection between the support assembly and the upper end of the cemented carbide micro-drill component. The reinforcing coating structure is made using NACO nanocomposite coating technology.

[0007] Furthermore, the cemented carbide micro-drill component includes a drill bit structure, a drill neck structure, a drill rod structure, and a drill shank structure. The drill neck structure is connected to the top of the drill bit structure, the drill rod structure is connected to the top of the drill neck structure, and the drill shank structure is connected to the top of the drill rod structure.

[0008] Furthermore, the drill bit structure, drill neck structure, drill rod structure, and drill shank structure are integrated into each other, and all of them are located on the same vertical central axis.

[0009] Furthermore, the drill bit structure is made of ultra-fine grained cemented carbide material, and the reinforced coating structure completely covers the outer surface of the drill bit structure and the drill neck structure.

[0010] Furthermore, the bracket assembly includes an upper support seat, a connecting seat, a buffer rod, a lower support seat, and a protective ring seat. The upper support seat has a connecting seat at its upper interior, and buffer rods are vertically installed at the four opposite corners of the bottom of the upper support seat. The bottom end of the buffer rod is connected to the lower support seat, and a ring is provided at the top center of the lower support seat.

[0011] Furthermore, the upper support seat and the connecting seat are fixedly connected, and the lower support seat and the protective ring seat are integrally formed. Moreover, the upper support seat and the lower support seat are parallel to each other, and the carbide micro-drill component is vertically arranged in the middle of the interior of the upper support seat and the lower support seat.

[0012] Furthermore, the bearing housing component includes a support sleeve, a fixed seat, and a support bearing. The bottom of the support sleeve is connected to the fixed seat, and the support bearing is fixedly installed in the middle of the inside of the support sleeve.

[0013] Furthermore, the upper end of the drill rod structure is vertically inserted into the middle of the support bearing, and the support sleeve and the fixed seat are integrally formed, with the fixed seat connected and installed on the top surface of the connecting seat.

[0014] This invention provides a high-rigidity PCB cemented carbide micro-drill, which has the following beneficial effects:

[0015] 1. In this utility model, the drill bit structure is made of PCB cemented carbide micro-drills, which are usually made of ultra-fine grain cemented carbide materials. This material has excellent hardness and wear resistance. Combined with advanced production processes and material ratios, this allows the micro-drill to achieve a very small diameter, thereby meeting different processing needs. In addition, the outer surface of the drill bit structure and drill neck structure is covered with a reinforcing coating structure. The reinforcing coating structure adopts NACO nanocomposite coating. Specifically, it is a new generation of NACO Si-containing nanocomposite coating developed using LARC technology. This coating is achieved by embedding 3nm AITIN crystals into amorphous Si3N4 under the action of strong plasma, forming a 1nm thick Si3N4 layer. This significantly improves the mechanical properties and thermal stability of the coating. Therefore, this reinforced coating structure is applied to the surface of the drill bit structure and drill neck structure substrate by vapor deposition, coating a refractory metal or non-metal compound with sufficient wear resistance. This coating has characteristics such as high hardness, good wear resistance, chemical stability, heat and oxidation resistance, low coefficient of friction and low thermal conductivity. It can greatly improve production efficiency and reduce production costs, while also effectively ensuring the performance of the cemented carbide micro-drill components themselves, thereby extending their service life.

[0016] 2. This utility model, through the structural connection of the bearing seat component, vertically sets the entire cemented carbide micro-drill component in the middle of the support assembly. Utilizing the structural mobility provided by the support bearing, the support assembly and bearing seat component provide stable structural support and protection for the cemented carbide micro-drill component without causing unnecessary structural interference to the high-speed rotating component. Simultaneously, it ensures good structural stability of the cemented carbide micro-drill component during operation, avoiding unnecessary axial rotation polarization problems, thereby ensuring drilling accuracy. Furthermore, the lower support seat and protective ring seat can, to a certain extent, prevent unnecessary influence from external factors during drilling. Combined with the structure of the buffer rod, a stable structural support is formed, and the elastic extension and contraction of the buffer rod itself ensures that the cemented carbide micro-drill component is not affected by the structure of the support assembly during vertical drilling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the axial side view of the body structure of a high-rigidity PCB cemented carbide micro-drill according to the present invention.

[0018] Figure 2 This is a schematic diagram of the cemented carbide micro-drill component structure of a high-rigidity PCB cemented carbide micro-drill according to the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of a support assembly for a high-rigidity PCB cemented carbide micro-drill according to the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of a bearing seat component for a high-rigidity PCB cemented carbide micro-drill according to the present invention.

[0021] In the figure: 1. Carbide micro-drill component; 101. Drill bit structure; 102. Drill neck structure; 103. Drill rod structure; 104. Drill shank structure; 2. Reinforced coating structure; 3. Support assembly; 301. Upper support seat; 302. Connecting seat; 303. Buffer rod; 304. Lower support seat; 305. Protective ring seat; 4. Bearing seat component; 401. Support sleeve; 402. Fixing seat; 403. Support bearing. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] like Figures 1 to 4As shown, a high-rigidity PCB cemented carbide micro-drill includes a cemented carbide micro-drill component 1 and a reinforcing coating structure 2. The lower surface of the cemented carbide micro-drill component 1 is covered with the reinforcing coating structure 2, and the upper end of the cemented carbide micro-drill component 1 is connected to a support assembly 3. A bearing seat component 4 is installed and connected at the connection between the support assembly 3 and the upper end of the cemented carbide micro-drill component 1. The reinforcing coating structure 2 is made using NACO nanocomposite coating technology. The cemented carbide micro-drill component 1 includes a drill bit structure 101, a drill neck structure 102, a drill rod structure 103, and a drill shank structure 104. The top end of the drill bit structure 101 is connected to the drill neck structure 102, and the top end of the drill neck structure 102 is connected to the drill rod structure 103. The top end of the drill rod structure 103 is connected to the drill shank. Structure 104, including drill bit structure 101, drill neck structure 102, drill rod structure 103, and drill shank structure 104, is an integrated structure. All three structures are located on the same vertical central axis. Drill bit structure 101 is made of ultra-fine grain cemented carbide material, and the reinforcing coating structure 2 completely covers the outer surfaces of drill bit structure 101 and drill neck structure 102. Drill bit structure 101 is typically made of ultra-fine grain cemented carbide material for PCB micro-drills. The reinforcing coating structure 2 effectively ensures the performance of the cemented carbide micro-drill component 1 and extends its service life.

[0024] like Figures 1 to 4As shown, the support assembly 3 includes an upper support base 301, a connecting base 302, a buffer rod 303, a lower support base 304, and a protective ring seat 305. The connecting base 302 is located at the upper inner end of the upper support base 301, and buffer rods 303 are vertically installed at the four opposite corners of the bottom of the upper support base 301. The bottom ends of the buffer rods 303 are connected to the lower support base 304, and a ring seat is located at the top center of the lower support base 304. The upper support base 301 and the connecting base 302 are fixedly connected, and the lower support base 304 and the protective ring seat 305 are integrally formed. The upper support base 301 and the lower support base 304 are parallel to each other, and the carbide micro-drill component 1 is vertically disposed within the upper support base 301 and the lower support base 304. In the middle of the part, the bearing housing component 4 includes a support sleeve 401, a fixed seat 402, and a support bearing 403. The bottom of the support sleeve 401 is connected to the fixed seat 402, and the support bearing 403 is fixedly installed in the middle of the inside of the support sleeve 401. The upper end of the drill rod structure 103 is vertically inserted into the middle of the inside of the support bearing 403. The support sleeve 401 and the fixed seat 402 are set as an integral structure, and the fixed seat 402 is connected and installed on the top surface of the connecting seat 302. Utilizing the structural mobility provided by the support bearing 403, the bracket assembly 3 and the bearing housing component 4 provide stable structural support and structural protection for the carbide micro-drill component 1, while cooperating with the structural setting of the buffer rod 303 to form a stable structural support.

[0025] In summary, as Figures 1 to 4 As shown, in use, the high-rigidity PCB carbide micro-drill is first vertically inserted into the middle of the bearing seat component 4. Then, the drill rod structure 103 and the support bearing 403 inside the support sleeve 401 are inserted and connected. At the same time, the support sleeve 401 is installed on the top of the connecting seat 302 using the fixing seat 402. The carbide micro-drill component 1 is vertically positioned in the middle of the support assembly 3. The drill bit structure 101 at the bottom of the drill neck structure 102 is vertically positioned between the lower support seat 304 and the protective ring seat 305. The drill rod structure 103 and the drill shank structure 104 connected to the bearing seat component 4 are vertically positioned between the upper support seat 301 and the connecting seat 302. During the drilling process, the buffer rod 303 will extend and retract synchronously with the vertical up and down displacement of the carbide micro-drill component 1, providing stable support while ensuring sufficient flexibility.

[0026] Carbide micro-drill components 1, reinforced coating structure 2, support assembly 3, and bearing housing components 4

[0027] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A high-rigidity PCB cemented carbide micro-drill, comprising a cemented carbide micro-drill component (1) and a reinforcing coating structure (2), characterized in that: The lower surface of the carbide micro-drill component (1) is covered with a reinforced coating structure (2), and the upper end of the carbide micro-drill component (1) is connected to a support assembly (3), and a bearing seat component (4) is installed at the connection between the support assembly (3) and the upper end of the carbide micro-drill component (1).

2. The high-rigidity PCB cemented carbide micro-drill according to claim 1, characterized in that, The cemented carbide micro-drill component (1) includes a drill bit structure (101), a drill neck structure (102), a drill rod structure (103), and a drill shank structure (104). The drill bit structure (101) is connected to the drill neck structure (102) at its top end, and the drill neck structure (102) is connected to the drill rod structure (103) at its top end. The drill rod structure (103) is connected to the drill shank structure (104) at its top end.

3. The high-rigidity PCB cemented carbide micro-drill according to claim 2, characterized in that, The drill bit structure (101), drill neck structure (102), drill rod structure (103) and drill shank structure (104) are integrated into one structure, and the drill bit structure (101), drill neck structure (102), drill rod structure (103) and drill shank structure (104) are all located on the same vertical central axis.

4. The high-rigidity PCB cemented carbide micro-drill according to claim 2, characterized in that, The drill bit structure (101) is made of a cemented carbide material with ultra-fine grains, and the reinforced coating structure (2) completely covers the outer surfaces of the drill bit structure (101) and the drill neck structure (102).

5. A high-rigidity PCB cemented carbide micro-drill according to claim 2, characterized in that, The bracket assembly (3) includes an upper support seat (301), a connecting seat (302), a buffer rod (303), a lower support seat (304), and a protective ring seat (305). The upper support seat (301) is provided with a connecting seat (302) at its upper internal end, and a buffer rod (303) is vertically installed at each of the four diagonal corners of the bottom of the upper support seat (301). The bottom end of the buffer rod (303) is connected to the lower support seat (304), and a ring is provided at the top center of the lower support seat (304).

6. A high-rigidity PCB cemented carbide micro-drill according to claim 5, characterized in that, The upper support (301) and the connecting seat (302) are fixedly connected, and the lower support (304) and the protective ring seat (305) are integrally structured. The upper support (301) and the lower support (304) are parallel to each other, and the carbide micro-drill component (1) is vertically arranged in the middle of the upper support (301) and the lower support (304).

7. A high-rigidity PCB cemented carbide micro-drill according to claim 5, characterized in that, The bearing housing component (4) includes a support sleeve (401), a fixed seat (402) and a support bearing (403). The bottom of the support sleeve (401) is connected to the fixed seat (402), and the support bearing (403) is fixedly installed in the middle of the inside of the support sleeve (401).

8. A high-rigidity PCB cemented carbide micro-drill according to claim 7, characterized in that, The upper end of the drill rod structure (103) is vertically inserted into the middle of the support bearing (403). The support sleeve (401) and the fixed seat (402) are integrated into one structure, and the fixed seat (402) is connected and installed on the top surface of the connecting seat (302).

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