CN220028780U - Multi-section type PCB drill bit - Google Patents
Multi-section type PCB drill bit Download PDFInfo
- Publication number
- CN220028780U CN220028780U CN202321536383.5U CN202321536383U CN220028780U CN 220028780 U CN220028780 U CN 220028780U CN 202321536383 U CN202321536383 U CN 202321536383U CN 220028780 U CN220028780 U CN 220028780U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- cutting edge
- main
- drill
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims 2
- 238000005553 drilling Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000010405 clearance mechanism Effects 0.000 abstract description 2
- 230000008719 thickening Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model relates to the technical field of PCB drill bits, in particular to a multi-section PCB drill bit, which comprises: the drill comprises a drill handle, wherein the bottom end of the drill handle is fixedly connected with a secondary drill bit, the bottom end of the secondary drill bit is fixedly connected with a main drill bit, the surface of the main drill bit is wound with a first double-spiral cutting edge, the surface of the main drill bit is wound with a second double-spiral cutting edge, and the first double-spiral cutting edge and the second double-spiral cutting edge are arranged; through the depth that is greater than two junk slots with the core thickness design of main drill bit, make the core of main drill bit thicker to can reduce the probability of the appearance rupture of PCB drill bit, reduce manufacturing cost, first abrasive plate and second abrasive plate in the clearance mechanism rotate in the drilling along with the rotation of secondary drill bit, thereby can take out the remaining sweeps in the drilling, thereby can promote the chip removal effect of main drill bit, avoid remaining difficult exhaust problem in the drilling because of with the core thickness thickening back sweeps of main drill bit.
Description
Technical Field
The utility model relates to the technical field of PCB drill bits, in particular to a multi-section PCB drill bit.
Background
The PCB drill bit is mainly used for PCB manufacture, the PCB is generally bonded by a plurality of layers of resin materials, copper foil wiring is adopted in the PCB, four, six and eight layers of copper foil wiring are adopted, drilling accounts for 30-40% of the cost of the PCB, special equipment and a drill bit are often required for mass production, the good PCB drill bit is made of hard alloy materials with good quality, and the PCB drill bit has the excellent characteristics of high hardness, high wear resistance, high strength, bending resistance, fracture resistance, long service life of a cutter, high rigidity, high hole site precision, good hole wall quality, long service life and the like.
Therefore, a multi-stage PCB drill is proposed to solve the above problems.
Disclosure of Invention
The utility model aims to solve the problems and provide a multi-section type PCB drill bit, which solves the problem that the drill bit is easy to break when the drill core thickness of the drill bit is designed to be thinner in order to achieve good chip removal effect.
The utility model realizes the above purpose by the following technical scheme, a multi-section type PCB drill bit, comprising: the drill comprises a drill handle, wherein a secondary drill bit is fixedly connected to the bottom end of the drill handle, a main drill bit is fixedly connected to the bottom end of the secondary drill bit, a first double-spiral cutting edge is wound on the surface of the main drill bit, a second double-spiral cutting edge is wound on the surface of the main drill bit, double-spiral arrangement is formed between the first cutting edge and the second cutting edge, two double-spiral chip grooves are formed between the first cutting edge and the second cutting edge, and the thickness of a drill core of the main drill bit is larger than the depth of the two chip grooves; the cleaning mechanism is arranged on the surface of the secondary drill bit, the top end of the cleaning mechanism is fixedly connected with the drill shank, and the drill core thickness of the main drill bit is designed to be greater than the depth of two chip removal grooves, so that the drill core of the main drill bit is thicker, the probability of breakage of the PCB drill bit can be reduced, and the production cost is reduced.
Preferably, the cleaning mechanism comprises a first grinding plate wound on the surface of the secondary drill bit, the cleaning mechanism comprises a second grinding plate wound on the surface of the secondary drill bit and arranged in a double-spiral mode with the first grinding plate, and the cleaning mechanism is arranged to enable the first grinding plate and the second grinding plate to rotate in a drilled hole along with the rotation of the secondary drill bit, so that residual scraps in the drilled hole can be brought out, the chip removal effect of the main drill bit can be improved, and the problem that scraps are not easy to discharge in the drilled hole due to the fact that the scraps remain in the drilled hole after the thickness of the drill core of the main drill bit is thickened is avoided.
Preferably, the bottoms of the first grinding plate and the second grinding plate are provided with knife edges, the knife edges are located above the chip grooves, and the knife edges at the bottoms of the first grinding plate and the second grinding plate cut off the scraps which have not completely leaked out of the drilled holes, so that the scraps are prevented from clamping the secondary drill bit, and the practicability of the cleaning mechanism is improved.
Preferably, the surface of first mill board is provided with the coarse grinding layer, the surface of second mill board is provided with the fine grinding layer, through setting up coarse grinding layer and fine grinding layer, the coarse grinding layer on first mill board surface can carry out first step to the remaining burr of drilling inner wall and polish, and the fine grinding layer on second mill board surface can carry out meticulously to the drilling inner wall to remain the burr in avoiding the drilling, influence PCB's follow-up processing.
Preferably, a groove with two numbers is formed between the first grinding plate and the second grinding plate, the grooves are arranged in a double-spiral mode, and through the arrangement of the grooves, waste materials generated after cutting and polishing can be discharged through the grooves, so that the practicability of the cleaning mechanism is improved.
Preferably, the main drill bit and the secondary drill bit are tungsten steel members, and the materials of the main drill bit and the secondary drill bit are arranged to be tungsten steel members, so that the tungsten steel has the characteristics of high hardness, high wear resistance, high strength, bending resistance and breakage resistance, and the service life of the cutter can be prolonged.
The beneficial effects of the utility model are as follows:
the drill core thickness of the main drill bit is designed to be greater than the depth of the two chip grooves, so that the drill core of the main drill bit is thicker, the probability of breakage of the PCB drill bit can be reduced, the production cost is reduced, the first grinding plate and the second grinding plate in the cleaning mechanism rotate in the drill holes along with the rotation of the secondary drill bit, and therefore the waste chips remained in the drill holes can be brought out, the chip removal effect of the main drill bit can be improved, and the problem that the waste chips remained in the drill holes are difficult to discharge after the thickness of the drill core of the main drill bit is thickened is avoided;
through setting up the edge of a knife, the edge of a knife of first abrasive plate and second abrasive plate bottom can cut off the sweeps that have not leaked the drilling completely yet, avoids sweeps to block the secondary drill bit, promotes clearance mechanism's practicality, through setting up coarse grinding layer and fine grinding layer, the coarse grinding layer on first abrasive plate surface can carry out first step to the remaining burr of drilling inner wall and polish, the fine grinding layer on second abrasive plate surface can carry out the meticulous grinding to the drilling inner wall to it has the burr to avoid remaining in the drilling, influence PCB's follow-up processing.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic bottom view of the present utility model;
FIG. 3 is a schematic illustration of the connection of the secondary drill bit and the cleaning mechanism of the present utility model;
fig. 4 is an enlarged view of a in fig. 2.
In the figure: 1. a drill shank; 2. a secondary drill bit; 3. a main drill bit; 301. a first margin; 302. a second margin; 303. a chip removal groove; 4. a cleaning mechanism; 401. a first grind plate; 402. a second grind plate; 403. a groove; 404. finely grinding the layer; 405. a knife edge; 406. coarsely grinding the layer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The specific implementation method comprises the following steps: as shown in fig. 1-4, a multi-section PCB drill bit, comprising: the drill stem 1, the bottom end of the drill stem 1 is fixedly connected with a secondary drill bit 2, the bottom end of the secondary drill bit 2 is fixedly connected with a main drill bit 3, a first cutting edge 301 which is double-spiral is wound on the surface of the main drill bit 3, a second cutting edge 302 which is double-spiral is wound on the surface of the main drill bit 3, double-spiral arrangement is formed between the first cutting edge 301 and the second cutting edge 302, two double-spiral chip grooves 303 are formed between the first cutting edge 301 and the second cutting edge 302, and the drill core thickness of the main drill bit 3 is larger than the depth of the two chip grooves 303; the cleaning mechanism 4, the cleaning mechanism 4 sets up in the surface of secondary drill bit 2, and the top and the drill shank 1 fixed connection of cleaning mechanism 4, and in drilling process, first margin 301 and second margin 302 can cut the PCB, and the waste material that the cutting produced can pass through junk slot 303 discharge.
As shown in fig. 2, 3 and 4, the cleaning mechanism 4 includes a first abrasive plate 401 wound on the surface of the secondary drill bit 2, the cleaning mechanism 4 includes a second abrasive plate 402 wound on the surface of the secondary drill bit 2 and arranged in double spiral with the first abrasive plate 401, and as the primary drill bit 3 goes deep into the borehole, the secondary drill bit 2 drives the first abrasive plate 401 and the second abrasive plate 402 into the borehole to clean the residual waste in the borehole.
As shown in fig. 3 and 4, the bottoms of the first grinding plate 401 and the second grinding plate 402 are respectively provided with a knife edge 405, the knife edges 405 are located above the junk slots 303, and as the secondary drill bit 2 enters the drill hole, the knife edges 405 at the bottoms of the first grinding plate 401 and the second grinding plate 402 can gradually enter the drill hole along with the secondary drill bit 2 to cut off junk which has not completely leaked out of the drill hole.
As shown in fig. 3 and 4, the surface of the first grinding plate 401 is provided with a rough grinding layer 406, the surface of the second grinding plate 402 is provided with a fine grinding layer 404, and the rough grinding layer 406 and the fine grinding layer 404 grind the inner wall of the drill hole along with the rotation of the first grinding plate 401 and the second grinding plate 402.
As shown in fig. 3 and 4, a number of grooves 403 are formed between the first grinding plate 401 and the second grinding plate 402, the grooves 403 are arranged in a double spiral shape, and the grooves 403 discharge scraps as the first grinding plate 401 and the second grinding plate 402 rotate in the drill hole.
As shown in fig. 1, 2, 3 and 4, the main bit 3 and the sub bit 2 are tungsten steel members.
When the utility model is used, in the drilling process, the first margin 301 and the second margin 302 can cut the PCB, waste materials generated by cutting can be discharged through the junk slots 303, and as the main drill bit 3 goes deep into the drilling hole, the secondary drill bit 2 can drive the first grinding plate 401 and the second grinding plate 402 to enter the drilling hole to clean residual waste materials in the drilling hole.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A multi-section PCB drill bit, comprising:
the drill handle (1), the bottom fixedly connected with secondary drill bit (2) of drill handle (1), the bottom fixedly connected with main drill bit (3) of secondary drill bit (2), the surface winding of main drill bit (3) has first cutting edge (301) that is double helix form, the surface winding of main drill bit (3) has second cutting edge (302) that is double helix form, be double helix arrangement between first cutting edge (301) and second cutting edge (302), be formed with between first cutting edge (301) and second cutting edge (302) a quantity and be chip groove (303) that double helix is formed.
The cleaning mechanism (4), the cleaning mechanism (4) is arranged on the surface of the secondary drill bit (2), and the top end of the cleaning mechanism (4) is fixedly connected with the drill shank (1).
2. The multi-section PCB drill of claim 1, wherein: the cleaning mechanism (4) comprises a first grinding plate (401) wound on the surface of the secondary drill bit (2), and the cleaning mechanism (4) comprises a second grinding plate (402) wound on the surface of the secondary drill bit (2) and arranged in a double-spiral mode with the first grinding plate (401).
3. A multi-section PCB drill bit according to claim 2, wherein: the bottoms of the first grinding plate (401) and the second grinding plate (402) are respectively provided with a knife edge (405), and the knife edges (405) are positioned above the chip grooves (303).
4. A multi-section PCB drill bit according to claim 2, wherein: the surface of the first grinding plate (401) is provided with a coarse grinding layer (406), and the surface of the second grinding plate (402) is provided with a fine grinding layer (404).
5. A multi-section PCB drill bit according to claim 2, wherein: two grooves (403) are formed between the first grinding plate (401) and the second grinding plate (402), and the two grooves (403) are arranged in a double-spiral mode.
6. The multi-section PCB drill of claim 1, wherein: the main drill bit (3) and the secondary drill bit (2) are tungsten steel components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321536383.5U CN220028780U (en) | 2023-06-16 | 2023-06-16 | Multi-section type PCB drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321536383.5U CN220028780U (en) | 2023-06-16 | 2023-06-16 | Multi-section type PCB drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220028780U true CN220028780U (en) | 2023-11-17 |
Family
ID=88723747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321536383.5U Active CN220028780U (en) | 2023-06-16 | 2023-06-16 | Multi-section type PCB drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220028780U (en) |
-
2023
- 2023-06-16 CN CN202321536383.5U patent/CN220028780U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10751810B2 (en) | Vertical-edge double-step sawtooth cutter for preparing high-quality holes of composite material and hybrid stack structure thereof | |
| CN110744108B (en) | Method for machining drill bit with edge-inclined groove structure for machining composite material | |
| CN220028780U (en) | Multi-section type PCB drill bit | |
| CN201295785Y (en) | Multi-point thin-plate twist drill with a slotting-cutter-shaped outer edge and with 120 degrees sharp angle of the outer edge | |
| CN211304915U (en) | Double-edge chamfering extrusion drilling reamer | |
| CN201079854Y (en) | Integral hard alloy printing circuit board drill | |
| CN202336614U (en) | Mini drill head | |
| CN209736719U (en) | Drilling and milling composite cutter with dovetail serrations for carbon fiber composite material | |
| CN214819151U (en) | Novel drill bit | |
| CN214640470U (en) | Cutting tool | |
| CN110625170A (en) | Double-right-handed cemented carbide milling cutter for multilayer copper high-end communication board and manufacturing method thereof | |
| CN111014785A (en) | Double-edge chamfering extrusion drilling reamer | |
| CN112191957A (en) | Single-tooth single-tooth staggered-tooth thread milling cutter | |
| CN113146734A (en) | Novel drill bit | |
| CN221389190U (en) | Coarse-fine composite high-precision reamer | |
| CN112453504A (en) | Twist drill with hole-dividing alloy tool bit | |
| CN217192797U (en) | Multifunctional chamfering centering drilling and milling cutter for metal cutting | |
| CN217044764U (en) | Double-cutting drill point type milling cutter | |
| CN218775844U (en) | PCD cutter for efficiently machining threads | |
| CN218461056U (en) | Drilling reamer with high-strength cutting edge | |
| CN206122775U (en) | Special hard alloy milling cutter of aluminium base board | |
| CN219112987U (en) | Milling cutter | |
| CN218168818U (en) | Drill bit for processing composite material | |
| CN219093751U (en) | Small-diameter multi-groove drilling tool for communication thick plate | |
| CN214520682U (en) | Miniature circuit board drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |