Circuit board drill bit polishing device
By designing an automated circuit board drill bit grinding device, the problem of reduced drilling quality caused by drill bit wear was solved, achieving efficient and precise drill bit grinding and quality control, and reducing enterprise costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU JINGHONGTONG ELECTRONIC TECH CO LTD
- Filing Date
- 2025-05-31
- Publication Date
- 2026-05-05
AI Technical Summary
In existing technologies, wear and deformation of circuit board drill bits during use lead to a decline in drilling quality. Traditional manual grinding is inefficient and prone to errors, affecting processing quality, and replacing drill bits is costly.
A circuit board drill bit grinding device was designed, comprising a positioning mechanism, a grinding mechanism, and a vision inspection mechanism. Through automated positioning and grinding, combined with vision inspection, the device achieves precise grinding and quality control of the drill bit.
It has enabled automated grinding of drill bits, improved grinding accuracy and efficiency, reduced human error, ensured that drill bit quality meets standards, and reduced the cost of replacing drill bits.
Smart Images
Figure CN224196467U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board processing, specifically to a circuit board drill bit grinding device. Background Technology
[0002] Circuit boards (PCBs) serve as the support for electronic components and the carrier for their electrical connections, making them an indispensable part of electronic devices. Common PCB types include single-sided, double-sided, and multilayer boards. The manufacturing process involves steps such as material preparation, drilling, circuit pattern creation, copper plating, circuit fabrication, etching, AOI (Automated Optical Inspection), and silkscreen printing. Drilling is used to create vias on PCBs, which are channels connecting circuits between different layers. Vias are typically created by first drilling holes in the substrate; subsequent electroplating processes form a conductive copper film on the hole walls, enabling electrical connections between the different layers. PCB vias are usually created using drilling equipment. The PCB substrate is fixed to the drilling equipment, which drills holes according to pre-defined drilling data. During drilling, the drill bit experiences significant mechanical stress, leading to wear and deformation over time, resulting in decreased drilling quality. Replacing drill bits directly with new ones would increase processing costs, especially for precision drill bits which are inherently expensive. Direct replacement would negatively impact a company's profits. Therefore, when drill bits age, the worn or deformed parts are usually ground and repaired before reuse. The traditional process of grinding drill bits relies on manual operation. With the aid of measuring tools, workers use grinding equipment to grind the drill bits, which is inefficient and prone to errors, affecting the quality of circuit board drilling. Utility Model Content
[0003] To address the aforementioned problems, this utility model provides a circuit board drill bit grinding device.
[0004] This utility model is achieved using the following solution:
[0005] A circuit board drill bit grinding device includes a machine base, a positioning mechanism disposed on the machine base, a grinding mechanism disposed on the machine base, and a vision inspection mechanism disposed on the machine base. The positioning mechanism includes a first moving module disposed on the machine base, a second moving module connected to the first moving module, a position adjustment component disposed on the second moving module, and a clamping and positioning component disposed on the position adjustment component. The clamping and positioning component includes a positioning plate disposed on the position adjustment component, a positioning drive component disposed on the positioning plate, a gearbox connected to the output end of the positioning drive component, and a clamping head connected to the gearbox.
[0006] Furthermore, the position adjustment assembly includes a position adjustment plate rotatably connected to the second moving module, and a first locking member connected to the position adjustment plate. The position adjustment plate is provided with a first arc-shaped hole, and the second moving module has a connecting groove. The first locking member passes through the first arc-shaped hole and connects to the connecting groove.
[0007] Furthermore, the top surface of the position adjustment plate is provided with a scale near the first arc-shaped hole.
[0008] Furthermore, the visual inspection mechanism includes an adjustable slide assembly mounted on the machine base, a support rod mounted on the adjustable slide assembly, a fixed frame connected to the support rod, and a visual sensor mounted on the fixed frame.
[0009] Furthermore, an adjustment frame is provided on the support rod, and the fixed frame is connected to the adjustment frame.
[0010] Furthermore, the polishing mechanism includes a fixed plate disposed on the machine base, a third movable module disposed on one side of the fixed plate, a polishing bracket connected to the second movable module, a polishing drive component disposed on the polishing bracket, and a polishing head disposed on the polishing bracket, wherein the polishing drive component is drively connected to the polishing head.
[0011] Furthermore, the third moving module and the fixed plate are rotatably connected. The fixed plate is provided with a second arc-shaped hole, and a second locking member is provided in the second arc-shaped hole. The second locking member passes through the second arc-shaped hole and is connected to the third moving module.
[0012] Furthermore, the third moving module is provided with a guide on the side facing the fixed plate, and the fixed plate is provided with a third arc-shaped hole that cooperates with the guide, and the guide is connected in the arc-shaped hole.
[0013] Furthermore, the first moving module, the second moving module, and the third moving module each include a lead screw assembly, a moving seat connected to the lead screw assembly, and a moving drive component for driving the lead screw assembly.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] The positioning mechanism of this invention comprises a first moving module and a second moving module. With the assistance of the grinding mechanism, it can automatically grind the drill bit without manual operation. Furthermore, it accurately controls the position of the drill bit during the grinding process, thereby ensuring grinding precision and keeping errors within acceptable limits to guarantee grinding quality. In addition, a visual inspection mechanism can detect whether the drill bit meets standards after grinding, further ensuring the grinding quality of the drill bit. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a circuit board drill bit grinding device provided in an embodiment of the present utility model.
[0017] Figure 2 This is a schematic diagram of the positioning mechanism according to an embodiment of the present utility model.
[0018] Figure 3 This is a schematic diagram of the grinding mechanism according to an embodiment of the present invention.
[0019] The image includes:
[0020] Machine base 1, positioning mechanism 2, first moving module 21, lead screw assembly 211, moving seat 212, moving drive component 213, second moving module 22, connecting groove 221, position adjustment assembly 23, position adjustment plate 231, first locking component 232, first arc-shaped hole 233, clamping and positioning assembly 24, positioning plate 241, positioning drive component 242, gearbox 243, clamping head 244, grinding mechanism 3, fixing plate 31, third moving module 32, grinding bracket 33, grinding drive component 34, grinding head 35, second arc-shaped hole 36, second locking component 37, guide component 38, third arc-shaped hole 39, vision inspection mechanism 4, adjusting slide assembly 41, support rod 42, fixing frame 43, vision sensor 44, adjusting frame 45. Detailed Implementation
[0021] To facilitate understanding of this utility model by those skilled in the art, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0022] Refer to 1 to Figure 3 This utility model provides a circuit board drill bit grinding device, including a machine base 1, a positioning mechanism 2 disposed on the machine base 1, a grinding mechanism 3 disposed on the machine base 1, and a vision inspection mechanism 4 disposed on the machine base 1. The positioning mechanism 2 is used to position the drill bit. After positioning, the grinding mechanism 3 grinds the drill bit. After grinding, the vision inspection mechanism 4 inspects the drill bit to determine whether the drill bit meets the standard.
[0023] The positioning mechanism 2 includes a first moving module 21 mounted on the machine base 1, a second moving module 22 connected to the first moving module 21, a position adjustment component 23 mounted on the second moving module 22, and a clamping and positioning component 24 mounted on the position adjustment component 23. The clamping and positioning component 24 includes a positioning plate 241 mounted on the position adjustment component 23, a positioning drive component 242 mounted on the positioning plate 241, a gearbox 243 connected to the output end of the positioning drive component 242, and a clamping head 244 connected to the gearbox 243. In this embodiment, the first moving module 21 is positioned along the X-axis, and the second moving module 22 is positioned along the Y-axis. The circuit board drill bit is fixed at the clamping head 244 during grinding. The positioning drive component 242 is a motor, and under the drive of the motor, the clamping head 244 can rotate at any angle.
[0024] The position adjustment assembly 23 includes a position adjustment plate 231 rotatably connected to the second moving module 22, and a first locking member 232 connected to the position adjustment plate 231. The position adjustment plate 231 is provided with a first arc-shaped hole 233. The second moving module 22 has a connecting groove 221 (specifically, it is provided on the moving seat 212 of the second moving module 22, arranged along the X-axis direction). The first locking member 232 passes through the first arc-shaped hole 233 and connects to the connecting groove 221. By adjusting the position adjustment plate 231, the orientation of the clamping head 244 can be adjusted, that is, the orientation of the drill bit can be adjusted, flexibly achieving grinding at different angles. The connecting groove 221 has a locking seat that matches the first locking member 232. The first locking member 232 has a threaded structure and forms a threaded connection with the locking seat, so that after the position adjustment plate 231 is rotated to a suitable angle, it can be locked by tightening the first locking member 232.
[0025] The top surface of the position adjustment plate 231 is provided with a scale near the first arc-shaped hole 233. The scale allows the user to intuitively know the current angle of the position adjustment plate 231, facilitating quick adjustment.
[0026] The visual inspection mechanism 4 includes an adjustable slide assembly 41 mounted on the machine base 1, a support rod 42 mounted on the adjustable slide assembly 41, a fixed frame 43 connected to the support rod 42, and a visual sensor mounted on the fixed frame 43. An adjustable frame is mounted on the support rod 42, and the fixed frame 43 is connected to the adjustable frame. The adjustable frame can adjust the height of the fixed frame 43. If needed, a rotation adjustment function can be added. The visual sensor can be a high-definition camera. After acquiring an image of the drill bit, the visual sensor can compare it with a pre-stored standard image to determine whether the drill bit meets the standard. If the drill bit does not meet the standard after grinding, the current drill bit is marked and its defect is recorded for subsequent targeted repair.
[0027] The grinding mechanism 3 includes a fixed plate 31 mounted on the machine base 1, a third moving module 32 mounted on one side of the fixed plate 31, a grinding bracket 33 connected to the second moving module 22, a grinding drive component 34 mounted on the grinding bracket 33, and a grinding head 35 mounted on the grinding bracket 33. The grinding drive component 34 is driveably connected to the grinding head 35 and is a motor that can be driven to the grinding head 35 via a synchronous pulley. In this embodiment, the third moving module 32 is inclined relative to the Z-axis, which can drive the grinding head 35 to move closer to or away from the positioning mechanism 2, that is, closer to or away from the drill bit clamped by the positioning mechanism 2.
[0028] The third moving module 32 and the fixed plate 31 are rotatably connected. The fixed plate 31 is provided with a second arc-shaped hole 36, and a second locking member 37 is provided in the second arc-shaped hole 36. The second locking member 37 passes through the second arc-shaped hole 36 and connects to the third moving module 32. Since the third moving module 32 can rotate relative to the fixed plate 31, the tilt angle of the third moving module 32 can be flexibly adjusted, that is, the tilt angle of the grinding head 35 can be adjusted, thereby flexibly meeting the grinding processing requirements of different angles. The bottom surface of the third moving module 32 is provided with a locking seat. The second locking member 37 has a threaded structure and forms a threaded connection with the locking seat of the third moving module 32. Therefore, after the third moving module 32 is rotated to a suitable angle, it can be locked by tightening the first locking member 232.
[0029] The third moving module 32 is provided with a guide member 38 on the side facing the fixed plate 31. The fixed plate 31 is provided with a third arc-shaped hole 39 that mates with the guide member 38, and the guide member 38 is connected within the arc-shaped hole. The guide member 38 can be a guide rod or a guide wheel. The cooperation between the guide member 38 and the third arc-shaped hole 39 makes the movement of the third moving module 32 more stable during adjustment.
[0030] The first moving module 21, the second moving module 22, and the third moving module 32 each include a lead screw assembly 211, a moving seat 212 connected to the lead screw assembly 211, and a moving drive component 213 for driving the lead screw assembly 211. In a specific implementation, this utility model also includes a control module. By writing a processing program into the control module, the three moving modules and the grinding head 35 can be automatically controlled to perform drill bit grinding.
[0031] In practical use, first, adjust the angles of the position adjustment plate 231 and the third moving module 32 according to the drill bit to be ground. Simultaneously, adjust the adjusting slide assembly 41 and the adjusting frame of the vision inspection mechanism 4 to align the vision sensor with the grinding area. Then, start the grinding process according to the set grinding program. The control module of the grinding device controls each mechanism to automatically grind the drill bit. After grinding, the vision sensor collects an image of the drill bit and compares it with a standard drill bit image to determine if the drill bit has been ground properly. The positioning drive 242 can drive the clamping head 244 to rotate a preset angle and then pause, such as rotating 90° or 180° each time. This allows the vision sensor to collect images of the drill bit from all angles, helping to more accurately judge the grinding effect. After the vision inspection is completed, the grinding operation of the drill bit is finished, and a new drill bit can be replaced.
[0032] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. For example, "upper," "lower," "left," "right," etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0033] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the scope of the appended claims.
Claims
1. A circuit board drill bit grinding device, characterized in that, The system includes a machine base, a positioning mechanism mounted on the machine base, a grinding mechanism mounted on the machine base, and a vision inspection mechanism mounted on the machine base. The positioning mechanism includes a first moving module mounted on the machine base, a second moving module connected to the first moving module, a position adjustment component mounted on the second moving module, and a clamping and positioning component mounted on the position adjustment component. The clamping and positioning component includes a positioning plate mounted on the position adjustment component, a positioning drive component mounted on the positioning plate, a gearbox connected to the output end of the positioning drive component, and a clamping head connected to the gearbox.
2. The circuit board drill bit grinding device according to claim 1, characterized in that, The position adjustment assembly includes a position adjustment plate rotatably connected to the second moving module, and a first locking member connected to the position adjustment plate. The position adjustment plate is provided with a first arc-shaped hole, and the second moving module has a connecting groove. The first locking member passes through the first arc-shaped hole and is connected to the connecting groove.
3. The circuit board drill bit grinding device according to claim 2, characterized in that, The position adjustment plate has a scale on its top surface near the first arc-shaped hole.
4. The circuit board drill bit grinding device according to claim 1, characterized in that, The visual inspection mechanism includes an adjustable slide assembly mounted on the machine base, a support rod mounted on the adjustable slide assembly, a fixed frame connected to the support rod, and a visual sensor mounted on the fixed frame.
5. A circuit board drill bit grinding device according to claim 4, characterized in that, An adjustment frame is provided on the support rod, and the fixed frame is connected to the adjustment frame.
6. The circuit board drill bit grinding device according to claim 1, characterized in that, The polishing mechanism includes a fixed plate disposed on the machine base, a third movable module disposed on one side of the fixed plate, a polishing bracket connected to the second movable module, a polishing drive component disposed on the polishing bracket, and a polishing head disposed on the polishing bracket, wherein the polishing drive component is drively connected to the polishing head.
7. A circuit board drill bit grinding device according to claim 6, characterized in that, The third moving module and the fixed plate are rotatably connected. The fixed plate is provided with a second arc-shaped hole, and a second locking member is provided in the second arc-shaped hole. The second locking member passes through the second arc-shaped hole and is connected to the third moving module.
8. A circuit board drill bit grinding device according to claim 7, characterized in that, The third moving module is provided with a guide on the side facing the fixed plate, and the fixed plate is provided with a third arc-shaped hole that cooperates with the guide, and the guide is connected in the arc-shaped hole.
9. A circuit board drill bit grinding device according to claim 6, characterized in that, The first moving module, the second moving module, and the third moving module each include a lead screw assembly, a moving seat connected to the lead screw assembly, and a moving drive for driving the lead screw assembly.