PCB drill bit detection auxiliary jig
By designing an auxiliary fixture for PCB drill bit inspection, using multiple positioning slots and a spinning assembly, parallel positioning and synchronous inspection of multiple drill bits are achieved. This solves the problem that traditional fixtures cannot inspect multiple drill bits at once, improves inspection efficiency and compatibility, and enables 360° imaging without blind spots.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU YUDINGHONG TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional PCB drill bit inspection fixtures cannot inspect multiple drill bits at once, resulting in low inspection efficiency.
Design a PCB drill bit inspection auxiliary fixture. The drill bit is positioned by multiple positioning slots spaced apart along a first direction on the substrate. Combined with a rotating mechanism, multiple positioning devices, including a reference block and a spinning assembly, are used to achieve parallel positioning and synchronous inspection of multiple drill bits.
It significantly increases the number of tests per run, shortens the testing cycle, improves testing efficiency, and can adapt to drill bits of different lengths, enhancing testing compatibility and synchronization, and achieving 360° imaging testing without blind spots.
Smart Images
Figure CN224500693U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of PCB drill bit manufacturing technology, and in particular to an auxiliary fixture for PCB drill bit inspection. Background Technology
[0002] Drill bits are typically made of cemented carbide or high-speed steel and are mainly used for drilling holes on PCBs. After the micro drill bits are formed, they need to be inspected before leaving the factory to ensure that their dimensions and cutting edge structure meet the qualified standards. The cutting edge structure is magnified using a camera mechanism, which is then observed by the operator on a screen. Currently, the general inspection process involves placing the drill bit to be tested on a fixture to fix it in place, and then rotating the camera mechanism or the drill bit itself to achieve multi-angle inspection. Due to the limitations of traditional fixtures, it is not possible to inspect multiple drill bits at once, resulting in low inspection efficiency. Utility Model Content
[0003] The purpose of this application is to provide an auxiliary fixture for PCB drill bit inspection to solve at least one of the above-mentioned technical problems.
[0004] To solve the above-mentioned technical problems, this application provides a PCB drill bit inspection auxiliary fixture, including a substrate, on which a plurality of positioning grooves are formed at intervals along a first direction, and the positioning grooves extend along a second direction;
[0005] A reference block, which is slidably disposed on the substrate along a second direction;
[0006] The spinning assembly includes a mounting frame, rotating rollers, and a rotation drive assembly. The mounting frame has a receiving groove, and a plurality of rotating rollers are rotatably disposed in the receiving groove. The axial direction of the rotating rollers is parallel to the second direction and corresponds one-to-one with the positioning groove. The rotation drive assembly is used to drive the rotating rollers to rotate. The mounting frame can be lifted and lowered on the substrate.
[0007] Among them, the first direction and the second direction are perpendicular to each other;
[0008] In the above implementation process, this solution achieves parallel positioning and clamping of multiple PCB drill bits through multiple positioning slots spaced apart along the first direction on the substrate. Compared with the traditional single-needle detection method, the number of drill bits detected at one time is increased several times, significantly shortening the detection cycle. After multiple drill bits are placed, the reference block is moved along the second direction by manual or motor-driven means, so that multiple drill bits can be simultaneously aligned with the reference and pushed to the clamping position. This solution can also be applied to the detection of drill bits of different lengths, improving applicability and compatibility. After the drill bit reaches the clamping position, the mounting frame moves down, and the rotating roller abuts against the outer surface of the rod of the drill bit to be tested, which can drive the drill bit to rotate slowly, thereby cooperating with the detection mechanism for detection. This solution can simultaneously detect multiple drill bits, improving detection efficiency, and can cooperate with the detection mechanism to make the drill bits rotate to achieve 360° imaging detection without blind spots.
[0009] Preferably, the rotating roller includes a main roller body and an outer protective layer disposed on the outer layer of the main roller body;
[0010] Anti-slip textures are formed on the outer protective layer;
[0011] In the above implementation process, the drill bit surface is smooth (especially the coated drill bit), and traditional metal rollers are prone to causing rotational slippage. This solution sets anti-slip texture to increase the surface friction coefficient, ensuring that the drill bit and the rotating roller rotate synchronously and avoiding drive slippage.
[0012] Preferably, the outer protective layer is made of anti-slip silicone material;
[0013] In the above implementation process, this solution uses anti-slip silicone material as the outer protective layer. Silicone material naturally has a high coefficient of friction and elastic deformation capability. When the drill bit is pressed, the silicone layer undergoes micro-deformation to increase the contact area and further improve the anti-slip effect. It automatically recovers after unloading, avoiding unevenness of the roller surface caused by permanent deformation. In addition, its chemical inertness also prevents it from reacting with the drill bit coating.
[0014] Preferably, an electric push rod is provided on the base plate, the electric push rod being adapted to drive the mounting frame to rise and fall;
[0015] In the above process, the electric actuator can be programmed to set its lifting stroke, ensuring that the rotating roller contacts the drill bit with constant pressure. Compared to manual adjustment, this eliminates the problems of excessively loose clamping (asynchronous rotation) or excessively tight clamping (drill bit deformation) caused by differences in human subjective force.
[0016] Preferably, the rotary drive assembly includes a first gear, a drive gear, a toothed belt, and a rotary motor;
[0017] The first gear is provided in multiple parts and is coaxially arranged with the rotating roller. The driving gear is connected to the rotary motor. The toothed belt is sleeved on the first gear and the driving gear and is in a meshing state.
[0018] In the above implementation process, this solution uses a toothed belt to link multiple first gears and a drive gear. The rotary motor drives the drive gear to rotate. When the drive gear rotates, it drives the first gear to rotate through the toothed belt. Compared with the independent motor drive solution, this solution can effectively reduce costs and avoid coordination errors under multiple motors.
[0019] Preferably, a limiting groove extending in the second direction is formed on the substrate, and a limiting block adapted to the limiting groove is provided on the reference block;
[0020] In the above implementation process, the limiting groove and the limiting block cooperate in this solution, and the constrained reference block retains only a single degree of freedom of movement, eliminating the risk of lateral offset or deflection.
[0021] Compared with existing technologies, the advantages of this application are as follows: This solution achieves parallel positioning and clamping of multiple PCB drill bits through multiple positioning slots spaced apart along the first direction on the substrate. Compared with the traditional single-needle detection method, the number of drill bits detected at one time is increased several times, significantly shortening the detection cycle. After multiple drill bits are placed, the reference block is moved along the second direction by manual or motor-driven means, so that multiple drill bits can be simultaneously aligned with the reference and pushed to the clamping position. This solution can also be applied to the detection of drill bits of different lengths, improving applicability and compatibility. After the drill bit reaches the clamping position, the mounting frame moves down, and the rotating roller abuts against the outer surface of the rod of the drill bit to be tested, which can drive the drill bit to rotate slowly, thereby cooperating with the detection mechanism for detection. This solution can simultaneously detect multiple drill bits, improving detection efficiency, and can cooperate with the detection mechanism to make the drill bit rotate to achieve 360° imaging detection without blind spots. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;
[0024] Figure 2 This is a schematic diagram of the internal structure of a spinning assembly according to one embodiment of this application;
[0025] Figure 3 This is a schematic diagram of the structure of a rotating roller according to one embodiment of this application;
[0026] Wherein: 10, substrate; 11, positioning groove; 12, limiting groove; 20, reference block; 21, limiting block; 30, spinning assembly; 31, mounting frame; 32, rotating roller; 321, main roller body; 322, outer protective layer; 40, electric push rod; 51, first gear; 52, drive gear; 53, toothed belt; 54, rotary motor;
[0027] C1, first direction; C2, second direction. Detailed Implementation
[0028] The following drawings disclose several embodiments of this application. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this application. That is, in some embodiments of this application, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.
[0029] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.
[0030] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit this application. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0031] To further understand the utility model content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:
[0032] Example
[0033] Drill bits are typically made of cemented carbide or high-speed steel and are mainly used for drilling holes on PCBs. After the micro drill bits are formed, they need to be inspected before leaving the factory to ensure that their dimensions and cutting edge structure meet the qualified standards. The cutting edge structure is magnified using a camera mechanism, and the operator observes it on a screen. Currently, the general inspection process involves the operator placing the drill bit to be tested on a fixture to fix it in place, and then rotating the camera mechanism or the drill bit itself to achieve multi-angle inspection. Due to the clamping characteristics of traditional fixtures, it is not possible to inspect multiple drill bits at once, resulting in low inspection efficiency. To solve the above technical problems, this embodiment provides the following technical solution:
[0034] For details, please see Figure 1-3 This embodiment provides a PCB drill bit inspection auxiliary fixture, including a substrate 10, a reference block 20 and a spinning assembly 30;
[0035] Specifically, a plurality of positioning grooves 11 are formed at intervals along a first direction on the substrate 10, and the positioning grooves 11 extend along a second direction.
[0036] Specifically, the reference block 20 is slidably disposed on the substrate 10 along the second direction;
[0037] Specifically, the spinning assembly 30 includes a mounting frame 31, rotating rollers 32, and a rotation drive assembly. The mounting frame 31 has a receiving groove, and a plurality of rotating rollers 32 are rotatably disposed in the receiving groove. The axial direction of the rotating rollers 32 is parallel to the second direction and corresponds one-to-one with the positioning grooves 11. The rotation drive assembly is used to drive the rotating rollers 32 to rotate. The mounting frame 31 can be lifted and lowered on the base plate 10.
[0038] In one embodiment, the first direction and the second direction are perpendicular to each other;
[0039] In the above solution, multiple positioning slots 11 spaced apart along the first direction on the substrate 10 enable parallel positioning and clamping of multiple PCB drill bits. Compared to the traditional single-needle detection method, the number of drill bits detected at one time is increased several times, significantly shortening the detection cycle. After multiple drill bits are placed, the reference block 20 is moved along the second direction by manual or motor-driven means, enabling multiple drill bits to be simultaneously aligned with the reference and pushed to the clamping position. This solution can also be applied to the detection of drill bits of different lengths, improving applicability and compatibility. After the drill bit reaches the clamping position, the mounting frame 31 moves down, and the rotating roller 32 abuts against the outer surface of the rod of the drill bit to be tested, which can drive the drill bit to rotate slowly, thereby cooperating with the detection mechanism for detection. This solution can simultaneously detect multiple drill bits, improving detection efficiency, and can cooperate with the detection mechanism to make the drill bits rotate to achieve 360° imaging detection without blind spots.
[0040] It should be noted that this solution is a fixture for completing drill bit testing in conjunction with the testing mechanism. In actual use, a camera mechanism can be set on one side of the fixture. Furthermore, the outer surface of the substrate 10 can be treated to exhibit smooth and wear-resistant properties. Therefore, when the spinning assembly 30 drives the drill bit to rotate, it will not cause excessive wear to the drill bit, and thus will not affect the product. In addition, the rotation speed of the rotating roller 32 is relatively low, so the wear on the drill bit is negligible.
[0041] Specifically, the rotating roller 32 includes a main roller body 321 and an outer protective layer 322 disposed on the outer layer of the main roller body 321;
[0042] Furthermore, anti-slip textures are formed on the outer protective layer 322;
[0043] In the above scheme, the drill bit surface is smooth (especially the coated drill bit), and traditional metal rollers are prone to causing rotational slippage. This scheme sets anti-slip texture to increase the surface friction coefficient, ensuring that the drill bit and the rotating roller 32 rotate synchronously and avoiding drive slippage.
[0044] Specifically, the outer protective layer 322 is made of anti-slip silicone material;
[0045] In the above scheme, this scheme uses anti-slip silicone material as the outer protective layer 322. Silicone material naturally has a high coefficient of friction and elastic deformation ability. When the drill bit is pressed, the silicone layer undergoes micro-deformation to increase the contact area and further improve the anti-slip effect. It automatically recovers after unloading, avoiding unevenness of the roller surface caused by permanent deformation. In addition, its chemical inertness also prevents it from reacting with the drill bit coating.
[0046] Specifically, an electric push rod 40 is provided on the base plate 10, which is adapted to drive the mounting frame 31 to rise and fall.
[0047] In the above solution, the electric push rod 40 can be programmed to lift and lower, ensuring that the rotating roller 32 contacts the drill bit with constant pressure. Compared with manual adjustment, this eliminates the problems of excessively loose clamping (asynchronous rotation) or excessively tight clamping (drill bit deformation) caused by differences in human subjective force.
[0048] For details, please see Figure 2 The rotary drive assembly includes a first gear 51, a drive gear 52, a toothed belt 53, and a rotary motor 54.
[0049] Furthermore, the first gear 51 is provided with multiple gears and is coaxially arranged with the rotating roller 32, the driving gear 52 is connected to the rotary motor 54, and the toothed belt 53 is sleeved on the first gear 51 and the driving gear 52 and is in a meshing state.
[0050] In the above scheme, the toothed belt 53 links multiple first gears 51 and drive gears 52. The rotary motor 54 drives the drive gear 52 to rotate. When the drive gear 52 rotates, it drives the first gear 51 to rotate through the toothed belt 53. Compared with the independent motor drive scheme, this scheme can effectively reduce costs and avoid coordination errors under multiple motors.
[0051] Specifically, a limiting groove 12 extending in the second direction is formed on the substrate 10, and a limiting block 21 adapted to the limiting groove 12 is provided on the reference block 20.
[0052] In the above scheme, the limiting groove 12 cooperates with the limiting block 21, and the constraint reference block 20 retains only a single degree of freedom of movement, eliminating the risk of lateral offset or deflection.
[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application shall fall within the scope of the technical solution of this application.
Claims
1. A PCB drill bit inspection auxiliary fixture, characterized in that: include A substrate having a plurality of positioning grooves spaced apart along a first direction, the positioning grooves extending along a second direction; A reference block, which is slidably disposed on the substrate along a second direction; The spinning assembly includes a mounting frame, rotating rollers, and a rotation drive assembly. The mounting frame has a receiving groove, and a plurality of rotating rollers are rotatably disposed in the receiving groove. The axial direction of the rotating rollers is parallel to the second direction and corresponds one-to-one with the positioning groove. The rotation drive assembly is used to drive the rotating rollers to rotate. The mounting frame can be lifted and lowered on the substrate. The first direction and the second direction are perpendicular to each other.
2. The PCB drill bit inspection auxiliary fixture according to claim 1, characterized in that: The rotating roller includes a main roller body and an outer protective layer disposed on the outer layer of the main roller body; Anti-slip textures are formed on the outer protective layer.
3. The PCB drill bit inspection auxiliary fixture according to claim 2, characterized in that: The outer protective layer is made of non-slip silicone material.
4. The PCB drill bit inspection auxiliary fixture according to claim 1, characterized in that: An electric push rod is provided on the base plate, which is adapted to drive the mounting frame to rise and fall.
5. The PCB drill bit inspection auxiliary fixture according to claim 1, characterized in that: The rotary drive assembly includes a first gear, a drive gear, a toothed belt, and a rotary motor; The first gear has multiple gears and is coaxially arranged with the rotating roller. The driving gear is connected to the rotary motor. The toothed belt is sleeved on the first gear and the driving gear and is in a meshing state.
6. The PCB drill bit inspection auxiliary fixture according to claim 1, characterized in that: A limiting groove extending in a second direction is formed on the substrate, and a limiting block adapted to the limiting groove is provided on the reference block.