A core thickness gauge

Abstract

This utility model belongs to the field of PCB drill bit inspection technology, and discloses a core thickness gauge, including a body, a camera, and a rotating assembly. The body provides a location for measuring the core thickness of the PCB drill bit. The camera is used to photograph the PCB drill bit. The rotating assembly includes a drive component, a belt, a rotating platform, and a friction assembly. The drive component is connected to the body, the belt is sleeved on the output shaft of the drive component, the rotating platform is connected to the body, and the friction assembly is connected to the outside of the rotating platform. The friction assembly is used to drive the PCB drill bit to rotate. By combining multi-angle rotation of the PCB drill bit with dynamic imaging by the camera, comprehensive inspection of the PCB drill bit is achieved. The operator then compares and analyzes multiple sets of photographs one by one, significantly improving the accuracy of PCB drill bit core thickness data acquisition.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board drill bit testing technology, and in particular relates to a core thickness gauge. Background Technology

[0002] In the electronics manufacturing industry, printed circuit boards (PCBs) serve as the support for electronic components and the carrier of electrical connections; their manufacturing quality directly affects the performance and reliability of electronic products. The PCB drilling process is a critical step in PCB manufacturing. The drill bit, as the core tool for drilling, directly determines the hole wall quality, hole position accuracy, and interlayer alignment accuracy based on its wear condition and dimensional precision. Therefore, accurate measurement of the PCB drill bit thickness is essential for ensuring drilling quality, extending drill bit lifespan, and reducing production costs.

[0003] Traditional methods for detecting drill bit thickness mainly rely on manual micrometer measurement. However, manual measurement has drawbacks such as low efficiency, large subjective errors, and difficulty in achieving full inspection. Furthermore, during long-term use, the wear pattern of the drill bit may be uneven (such as uneven wear of the cutting edge or deformation of the spiral groove). Detection from a single angle cannot fully reflect the actual wear state of the drill bit, resulting in incomplete core thickness data acquisition and thus affecting the accuracy of borehole quality assessment. Utility Model Content

[0004] This invention addresses the problem that existing methods for detecting drill bit thickness primarily rely on manual micrometer measurement. However, manual measurement suffers from drawbacks such as low efficiency, large subjective errors, and difficulty in achieving full inspection. Furthermore, during long-term use, the wear pattern of the drill bit may exhibit unevenness (e.g., uneven cutting edge wear, helical groove deformation), making it difficult to comprehensively reflect the actual wear state of the drill bit from a single angle. This results in incomplete core thickness data acquisition, thus affecting the accuracy of borehole quality assessment. The following technical solution is proposed:

[0005] A core thickness gauge, comprising:

[0006] The machine body is used to provide a place for measuring the core thickness of PCB board drill bits;

[0007] A camera used to film the drill bits on a PCB board;

[0008] The rotating assembly includes a drive component, a belt, a rotating table, and a friction assembly. The drive component is connected to the machine body, the belt is sleeved on the output shaft of the drive component, the rotating table is connected to the machine body, and the friction assembly is connected to the outside of the rotating table. The friction assembly is used to drive the PCB board drill bit to rotate.

[0009] As a preferred embodiment of the above technical solution, the friction assembly includes:

[0010] A second driving component and a rotating wheel, wherein the second driving component is used to drive the rotating wheel to rotate;

[0011] A rubber ring is fitted onto the rotating wheel to drive the PCB board drill bit to rotate.

[0012] As a preferred embodiment of the above technical solution, the outer surface of the rotating table is connected to a V-block, and a slot is opened inside the V-block, into which the PCB board drill bit is inserted.

[0013] As a preferred embodiment of the above technical solution, a light source is installed at the bottom of the internal structure of the machine body.

[0014] As a preferred embodiment of the above technical solution, a cleaning component is also included, the cleaning component comprising:

[0015] The driving component three and the rotating rod, wherein the driving component three is used to drive the rotating rod to rotate;

[0016] The lower support block and the upper clamping block are used to fix the rotating rod.

[0017] As a preferred embodiment of the above technical solution, the machine body is provided with a glass cabinet door and a protective cover, and a magnetic plate is connected to the outer surface of the machine body, with U-shaped protrusions connected to the magnetic plate.

[0018] The beneficial effects of this utility model are as follows:

[0019] (1) This utility model combines multi-angle rotation of the PCB board drill bit with dynamic photography by a camera to achieve all-round inspection of the PCB board drill bit. The staff then compares and analyzes the multiple sets of photos taken one by one, which significantly improves the accuracy of the core thickness data collection of the PCB board drill bit.

[0020] (2) The present invention can wipe the dust on the protective glass of the light source in a timely manner through the cleaning component, so as to avoid dust contamination of the protective glass, ensure that the brightness of the light source is not obstructed, and thus enable the camera to capture clear images of the PCB board drill bit. Attached Figure Description

[0021] Figure 1 The diagram shown is a schematic of the overall structure of a core thickness gauge;

[0022] Figure 2 The diagram shown is a partial structural schematic of a core thickness gauge;

[0023] Figure 3 The diagram shown is a structural schematic of the internal camera and friction assembly of a core thickness gauge;

[0024] Figure 4 What is shown is Figure 3 Schematic diagram of the structure of region A in the middle;

[0025] Figure 5 What is shown is Figure 3 A schematic diagram of the structure of region B in the middle.

[0026] In the diagram: 1. Body; 2. Camera; 3. Drive component one; 4. Belt; 5. Rotary stage; 6. Drive component two; 7. Rotary wheel; 8. Rubber ring; 9. V-block; 10. Slot; 11. PCB board drill bit; 12. Light source; 13. Drive component three; 14. Lower support block; 15. Rotating rod; 16. Upper clamping block; 17. Glass cabinet door; 18. Protective cover; 19. Magnetic plate; 20. U-shaped protrusion. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0028] Example 1

[0029] This utility model provides a core thickness gauge, such as Figures 1 to 5 As shown, the core thickness gauge includes a body 1, a camera 2, and a rotating assembly. The body 1 provides a location for measuring the core thickness of the PCB board drill bit 11. The camera 2 is used to photograph the PCB board drill bit 11. The rotating assembly includes a drive component 3, a belt 4, a rotating platform 5, and a friction assembly. The drive component 3 is fixedly installed at the bottom of the body 1. The rotating platform 5 is rotatably connected to the inside of the body 1. The belt 4 is connected to the outer surface of the output shaft of the drive component 3 and the outer surface of the rotating platform 5. The friction assembly includes a drive component 6, a rotating wheel 7, and a rubber ring 8. The drive component 6 is fixedly installed on the outside of the rotating platform 5. The rotating wheel 7 is connected to the output shaft of the rotating platform 5. The rubber ring 8 is fitted onto the outside of the rotating wheel 7. A V-block 9 is also fixedly installed on the outer surface of the rotating platform 5. A slot 10 is opened inside the V-block 9. The PCB board drill bit 11 passes through the V-block 9 and is rotatably installed inside the V-block 9. The friction assembly is used to drive the PCB board drill bit 11 to rotate.

[0030] By activating drive component 3, the rotating table 5 is driven to rotate under the action of belt 4. When the rotating table 5 rotates, it drives the friction component and V block 9 to rotate synchronously, thereby causing the PCB board drill bit 11 installed inside the V block 9 to rotate. When drive component 6 activates and drives the rotating wheel 7 to rotate, the rubber ring 8 rubs against the PCB board drill bit 11, thereby causing the PCB board drill bit 11 to rotate inside the V block 9. Subsequently, camera 2 takes pictures of the moving PCB board drill bit 11, thereby realizing multi-angle measurement and shooting of the PCB board drill bit 11, and obtaining more accurate core thickness data of the PCB board drill bit 11.

[0031] In use, the operator inserts the PCB board drill bit 11, whose core thickness needs to be measured, into the V block 9 along the slot 10. Then, the drive unit 3 is powered on, and the rotating table 5 is driven to rotate synchronously through the belt 4. When the rotating table 5 rotates, the friction component and the V block 9 rotate synchronously around the axis of the rotating table 5. Then, the drive unit 6 is powered on and drives the rotating wheel 7 to start rotating. When the rotating wheel 7 rotates, it drives the rubber ring 8 to rub against the outer surface of the PCB board drill bit 11, so that the PCB board drill bit 11 rotates inside the V block 9. This allows the installation position of the PCB board drill bit 11 to be adjusted at multiple angles, making it convenient for the camera 2 to take pictures of the PCB board drill bit 11 from various angles. Then, the operator compares the multiple sets of pictures one by one to obtain more accurate core thickness data of the PCB board drill bit 11.

[0032] Specifically, camera 2 is an existing camera device, specifically a KEYENCE-CV-200M 2-megapixel monochrome industrial camera; drive component 3 and drive component 6 are both set as stepper motors; the rotary wheel 7 is connected to the output shaft of drive component 6 via a flat key; the rubber ring 8 is made of rubber material and is tightly fitted onto the outer ring of the rotary wheel 7.

[0033] To make the photos of the PCB board drill bit 11 taken by camera 2 clearer, such as Figures 2 to 5 As shown, a camera 2 is installed at the bottom of the body 1; the core thickness gauge also includes a cleaning assembly, which includes a drive component 13, a lower support block 14, a rotating rod 15, and an upper clamping block 16; in this embodiment, the drive component 13 is specifically configured as a drive motor, which is fixedly installed inside the body 1; the lower support block 14 is fixedly sleeved on the outside of the output shaft of the drive component 13, and a rotating rod 15 is provided on the outside of the output shaft of the drive component 13 directly above the lower support block 14, and a cleaning cloth is provided at the bottom end of the rotating rod 15; the upper clamping block 16 is installed on the outer surface of the output shaft of the drive component 13 directly above the rotating rod 15 via a threaded connection.

[0034] By installing the rotating rod 15 directly above the lower support block 14, and then threading the upper clamping block 16 onto the output shaft of the drive component 13 (e.g., Figure 5 As shown in the figure, the end of the rotating rod 15 is pressed tightly between the lower support block 14 and the upper clamping block 16. Then, the driving component 13 is energized to drive the lower support block 14 and the upper clamping block 16 to start rotating. While the lower support block 14 and the upper clamping block 16 are rotating, the rotating rod 15 is rotated synchronously, so that the cleaning cloth installed at the bottom of the rotating rod 15 can wipe the dust on the top of the light source 12, effectively cleaning the protective glass on the surface of the light source 12, and making the light provided by the light source 12 more sufficient and clear.

[0035] Specifically, the light source 12 is an existing LED (light-emitting diode) lamp, which has the advantages of energy saving, environmental protection, long life and adjustable brightness. The top of the light source 12 is also equipped with a protective glass. The cleaning cloth installed at the bottom of the rotating rod 15 is a special lens cleaning cloth (such as 3M or Zeiss) or vacuum-packed disposable lens cleaning paper. It is soft and will not shed lint when wiping. It will not scratch the glass when wiping the protective glass on the light source 12.

[0036] In this embodiment, as Figure 1 and Figure 2 As shown, the camera body 1 is also equipped with a glass cabinet door 17 and a protective cover 18. The glass cabinet door 17 is installed on the camera body 1 by hinges. The glass cabinet door 17 allows the staff to easily observe the operating status of the equipment inside the camera body 1 at all times. A magnetic plate 19 is also fixedly installed on the outer surface of the camera body 1. The top of the magnetic plate 19 has an integrally formed U-shaped protrusion 20. The bottom of the protective cover 18 is located on the outer surface of the U-shaped protrusion 20 and has a U-shaped groove. This allows the staff to insert the protective cover 18 into the magnetic plate 19. The magnetic plate 19 is then firmly attached to the camera body 2 by adsorption, thus protecting the camera body 2. At the same time, the magnetically detachable design of the protective cover 18 facilitates timely maintenance and adjustment of the camera body 2 by the staff.

[0037] Working principle: In actual use, the operator inserts the PCB board drill bit 11, which needs to be measured for core thickness, into the V block 9 along the slot 10, closes the glass cabinet door 17, and installs the protective cover 18 on the outside of the camera 2. Then, the operator turns on the switch button on the machine body 1 to power on the drive unit 3. Through the connection of the belt 4, the output shaft of the drive unit 3 rotates, driving the rotating table 5 to rotate synchronously. At the same time, the drive unit 6 is powered on and drives the rotating wheel 7 to start rotating. When the rotating wheel 7 rotates, it drives the rubber ring 8 to rub against the outer surface of the PCB board drill bit 11, so that the PCB board drill bit 11 can rotate inside the V block 9. While the PCB board drill bit 11 rotates inside the V block 9, it also rotates around the center of the rotating table 5, so that the camera 2 can shoot the PCB board drill bit 11 from multiple angles. Then, the operator compares the multiple sets of angles one by one to obtain more accurate core thickness data of the PCB board drill bit 11.

[0038] When camera 2 captures images of the moving PCB board drill bit 11 from multiple angles, light source 12 is powered on and illuminates the space inside the camera body 1 and glass cabinet door 17, enabling camera 2 to clearly capture images of the moving PCB board drill bit 11 and achieve high-precision imaging. During shooting, if dust or other impurities appear on the protective glass at the top of light source 12, affecting the supplementary lighting effect of light source 12, drive component 3 13 is powered on and drives the lower support block 14 and upper clamping block 16 to rotate synchronously. Rotating rod 15 is tightly clamped between the lower support block 14 and upper clamping block 16. Therefore, when the lower support block 14 and upper clamping block 16 rotate, they also drive the rotating rod 15 to rotate synchronously, so that the cleaning cloth installed at the bottom of the rotating rod 15 can clean the impurities attached to the protective glass of light source 12 in time, ensuring the supplementary lighting effect of light source 12.

[0039] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A core thickness gauge characterized by, include: The machine body (1) is used to provide a place for measuring the core thickness of the PCB board drill bit (11); Camera (2) is used to photograph the PCB board drill bit (11); The rotating assembly includes a drive component (3), a belt (4), a rotating platform (5), and a friction assembly. The drive component (3) is connected to the machine body (1), the belt (4) is sleeved on the output shaft of the drive component (3), the rotating platform (5) is connected to the machine body (1), and the friction assembly is connected to the outside of the rotating platform (5). The friction assembly is used to drive the PCB board drill bit (11) to rotate.

2. The core caliper of claim 1, wherein, The friction assembly includes: Drive component 2 (6) and rotating wheel (7), wherein the drive component 2 (6) is used to drive the rotating wheel (7) to rotate; A rubber ring (8) is fitted onto the rotating wheel (7) and is used to drive the PCB board drill bit (11) to rotate.

3. The core caliper of claim 1, wherein, The outer surface of the rotating platform (5) is connected to a V-block (9), and a slot (10) is provided inside the V-block (9). The PCB board drill bit (11) is inserted into the slot (10).

4. The core caliper of claim 1, wherein, A light source (12) is installed at the bottom of the interior of the body (1).

5. The core thickness gauge of claim 1, wherein, It also includes a cleaning component, the cleaning component comprising: The driving component three (13) and the rotating rod (15) are provided, wherein the driving component three (13) is used to drive the rotating rod (15) to rotate; The lower support block (14) and the upper clamping block (16) are used to fix the rotating rod (15).

6. The core thickness gauge of claim 1, wherein, The body (1) is provided with a glass cabinet door (17) and a protective cover (18). A magnetic plate (19) is connected to the outer surface of the body (1), and a U-shaped protrusion (20) is connected to the magnetic plate (19).

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