CN220612409U - PCB cutter with thick forked tail ditching structure of core - Google Patents
PCB cutter with thick forked tail ditching structure of core Download PDFInfo
- Publication number
- CN220612409U CN220612409U CN202321902053.3U CN202321902053U CN220612409U CN 220612409 U CN220612409 U CN 220612409U CN 202321902053 U CN202321902053 U CN 202321902053U CN 220612409 U CN220612409 U CN 220612409U
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- CN
- China
- Prior art keywords
- blade surface
- dovetail groove
- ridge
- cutting blade
- cutting
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Links
- 238000005553 drilling Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001568665 Ocinebrellus inornatus Species 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Abstract
The utility model relates to a PCB cutter with a core thick dovetail ditching structure, which comprises: a straight shank; the drill body part is combined with one end of the straight shank part, the front end of the drill body part is provided with a drill tip, two sides of the drill tip form a first cutting blade surface and a second cutting blade surface in an inclined way towards the direction of the straight shank part, the first outer periphery of the first cutting blade surface and the second outer periphery of the second cutting blade surface respectively extend and spiral along the outer diameter of the drill body part towards the direction of the straight shank part so as to form two spiral side edges, a first chip removal groove and a second chip removal groove, a first dovetail groove and a second dovetail groove are respectively formed on the first cutting blade surface and the second cutting blade surface, a first inner edge line is formed between one side of the first dovetail groove and the first cutting blade surface, a second inner edge line is formed between one side of the second dovetail groove and the second cutting blade surface, and the other side of the second dovetail groove extends to the second chip removal groove.
Description
Technical Field
The utility model relates to a cutting tool, in particular to a drill point (drill diameter interval is 0.06-1.2 mm) for drilling a PCB, wherein two sides of a core thick part are respectively provided with a dovetail groove structure, and the structure is designed to improve cutting force, chip removing force, positioning force and drilling quality.
Background
The circuit board is made by layering glass fiber in a woven fabric state and copper foil forming a conductor with epoxy resin and the like, and is subjected to multiple small-diameter perforation processing for conducting electric property in the process of obtaining a finished product. The trend of miniaturization is accelerated by the high performance, high functionality, and miniaturization of electronic devices with the high level of packaging density of holes formed in circuit boards. Accordingly, in recent years, the diameter of the drill for punching the circuit board has been reduced, however, the smaller the drill is, the less easily the precision is maintained, and thus the drill of the prior art still has room for improvement.
In view of this, how to remove the above-mentioned defects is the technical difficulty to be solved by the present inventor; therefore, the present inventors have made diligent studies and experiments to develop and complete the present utility model based on the experiences of the related industries for many years, and have made the present utility model to increase the efficacy.
Disclosure of Invention
In view of the above-mentioned drawbacks, the present utility model provides a PCB cutter with a core thick dovetail trenching structure, comprising: a straight shank portion having a cylindrical shape; the front end of the drill body is provided with a drill tip, the section radius of the drill tip is defined as core thickness, two sides of the drill tip form a first cutting blade surface and a second cutting blade surface in an inclined way towards the direction of the straight shank, the first outer periphery of the first cutting blade surface and the second outer periphery of the second cutting blade surface extend and spiral along the outer diameter of the drill body towards the direction of the straight shank respectively to form two spiral side edges, a first chip removal groove and a second chip removal groove, a first dovetail groove and a second dovetail groove are respectively formed on the first cutting blade surface and the second cutting blade surface, a first inner edge line is formed between one side of the first dovetail groove and the first cutting blade surface, a second inner edge line is formed between one side of the second dovetail groove and the second cutting blade surface, and the other side of the second dovetail groove extends to the second chip removal groove.
Wherein a drill point ridge is formed between the first cutting face and the second cutting face.
The first cutting surface comprises a first main surface and a first secondary surface, the first main surface is smoothly connected with the first secondary surface, and the height of the first main surface is higher than that of the first secondary surface; the second cutting blade surface comprises a second main blade surface and a second secondary blade surface, the second main blade surface is smoothly connected with the second secondary blade surface, and the height of the second main blade surface is higher than that of the second secondary blade surface.
The first dovetail groove and the first inner ridge are positioned on the first knife surface, a first outer ridge is formed between the other side of the first dovetail groove and the first chip removal groove, and two ends of the first inner ridge are connected with two ends of the first outer ridge; the second dovetail groove and the second inner edge line are positioned on the second knife surface, a second outer edge line is formed between the other side of the second dovetail groove and the second chip removal groove, and two ends of the second inner edge line are connected with two ends of the second outer edge line.
One end of the first dovetail groove enters the second cutting blade surface through the drill point ridge line, so that the first inner ridge line and the first outer ridge line are connected with the edge of the second main blade surface; one end of the second dovetail groove enters the first cutting surface through the drill point ridge line, so that the second inner ridge line and the second outer ridge line are connected with the edge of the first main cutting surface.
Wherein the junction of the first inner ridge and the first outer ridge is higher than the first dovetail groove; the junction of the second inner ridge and the second outer ridge is higher than the second dovetail groove.
The top end of the straight shank part is provided with a tapered section which is connected with the drill body part.
According to the utility model, through the structure that the two sides of the core thick part are respectively provided with the dovetail grooves, the cutting force, the chip removing force, the positioning force and the drilling quality of the PCB cutter are improved.
Drawings
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is an enlarged partial view of the drill body portion of the present utility model;
FIG. 3 is a top view of the present utility model;
FIG. 4 is a perspective view of the drill body of the present utility model;
FIG. 5 is an enlarged side view of the drill tip of the present utility model;
fig. 6 is an enlarged side view of the other side continuing with fig. 5.
Description of the reference numerals
10. A straight shank portion;
11. a tapered section;
20. a drill body part;
21. drilling a tip;
22. a first cutting surface;
23. a second cutting face;
30. a first dovetail groove;
31. a first inner ridge;
32. a first outer ridge;
40. a second dovetail groove;
41. a second inner ridge;
42. a second outer ridge;
A. drill point ridge.
Detailed Description
For the purpose of illustrating the contents and the effects achieved by the present utility model, reference is now made to fig. 1 and 3, which illustrate an embodiment of a PCB cutter with a core thick dovetail groove structure, comprising:
a straight shank portion 10 having a cylindrical shape, and a tapered section 11 is provided at the top end of the straight shank portion 10.
A drill body 20 combined with the tapered section 11 of the end of the straight shank 10, the front end of the drill body 20 having a drill tip 21, the cross-sectional radius of the drill tip 21 being defined as core thickness, the two sides of the drill tip 21 forming a first cutting surface 22 and a second cutting surface 23 obliquely toward the direction of the straight shank 10, a drill tip ridge line a being formed between the first cutting surface 22 and the second cutting surface 23.
Referring to fig. 2 to 4, the first outer periphery of the first cutting surface 22 and the second outer periphery of the second cutting surface 23 respectively extend along the outer radial direction of the drill body 20 along the direction of the straight shank 10 to form two spiral side edges, a first chip removing groove and a second chip removing groove.
The first cutting surface 22 comprises a first main surface and a first secondary surface, the first main surface is smoothly connected with the first secondary surface, and the first main surface is higher than the first secondary surface; the second cutting surface 23 comprises a second main surface and a second sub surface, and the second main surface is smoothly connected with the second sub surface, and the height of the second main surface is higher than that of the second sub surface.
Referring to fig. 3 to 6, a first dovetail groove 30 and a second dovetail groove 40 are respectively disposed on the first cutting surface 22 and the second cutting surface 23, a first inner ridge 31 is formed between one side of the first dovetail groove 30 and the first cutting surface 22, the other side of the first dovetail groove 30 extends to the first chip removing groove, a second inner ridge 41 is formed between one side of the second dovetail groove 40 and the second cutting surface 23, and the other side of the second dovetail groove 40 extends to the second chip removing groove.
The first dovetail groove 30 and the first inner ridge 31 are positioned on the first knife surface, a first outer ridge 32 is formed between the other side of the first dovetail groove 30 and the first chip removal groove, and two ends of the first inner ridge 31 are connected with two ends of the first outer ridge 32; the second dovetail groove 40 and the second inner ridge 41 are located on the second cutting surface, a second outer ridge 42 is formed between the other side of the second dovetail groove 40 and the second chip removal groove, and two ends of the second inner ridge 41 are connected with two ends of the second outer ridge 42.
Further, one end of the first dovetail groove 30 enters the second cutting face 23 through the drill point ridge a, so that the first inner ridge 31 and the first outer ridge 32 are connected to the edge of the second main face; one end of the second dovetail groove 40 enters the first cutting surface 22 through the drill point ridge a, connecting the second inner ridge 41 with the second outer ridge 42 at the edge of the first major surface.
The junction between the first inner ridge 31 and the two ends of the first outer ridge 32 is higher than the first dovetail groove 30; the junction between the second inner ridge 41 and the second outer ridge 42 is higher than the second dovetail groove 40, so that the first dovetail groove 30 and the second dovetail groove 40 can be used to improve cutting ability, chip removal ability and positioning force during drilling, and have a good aspect ratio.
The foregoing detailed description is directed to a specific embodiment of the utility model, but the embodiment is not intended to limit the scope of the utility model, and equivalents and modifications that do not depart from the spirit of the utility model are intended to be included in the scope of the utility model.
Claims (7)
1. A PCB cutter with a core thick dovetail trenching structure, comprising:
a straight shank portion having a cylindrical shape;
the drill body part is combined with one end of the straight shank part, the front end of the drill body part is provided with a drill tip part, the section radius of the drill tip part is defined as core thickness, two sides of the drill tip part form a first cutting blade surface and a second cutting blade surface in an inclined way towards the direction of the straight shank part, the first outer periphery of the first cutting blade surface and the second outer periphery of the second cutting blade surface respectively extend and spiral along the outer diameter of the drill body part towards the direction of the straight shank part so as to form two spiral side edges, a first chip removing groove and a second chip removing groove, a first dovetail groove and a second dovetail groove are respectively formed on the first cutting blade surface and the second cutting blade surface, a first inner edge line is formed between one side of the first dovetail groove and the first cutting blade surface, a second inner edge line is formed between one side of the second dovetail groove and the second cutting blade surface, and the other side of the second dovetail groove extends to the second chip removing groove.
2. The PCB cutter with a core thick dovetail trenching structure of claim 1 wherein a drill point ridge is formed between the first cutting face and the second cutting face.
3. The PCB cutter with a thick dovetail trenching structure of claim 2, wherein the first cutting blade comprises a first major blade and a first minor blade, wherein the first major blade is smoothly connected to the first minor blade and the first major blade is higher than the first minor blade; the second cutting blade surface comprises a second main blade surface and a second secondary blade surface, the second main blade surface is smoothly connected with the second secondary blade surface, and the height of the second main blade surface is higher than that of the second secondary blade surface.
4. The PCB cutter with a thick-core dovetail groove structure according to claim 3, wherein the first dovetail groove and the first inner ridge are located on the first secondary blade surface, a first outer ridge is formed between the other side of the first dovetail groove and the first chip removal groove, and two ends of the first inner ridge are connected with two ends of the first outer ridge; the second dovetail groove and the second inner edge line are positioned on the second knife surface, a second outer edge line is formed between the other side of the second dovetail groove and the second chip removal groove, and two ends of the second inner edge line are connected with two ends of the second outer edge line.
5. The PCB cutter with a core-thick dovetail trenching structure of claim 4 wherein one end of the first dovetail groove enters the second cutting face through the drill point ridge such that the first inner ridge connects with the first outer ridge at the edge of the second major face; one end of the second dovetail groove enters the first cutting surface through the drill point ridge line, so that the second inner ridge line and the second outer ridge line are connected with the edge of the first main cutting surface.
6. The PCB cutter with a core thick dovetail groove structure according to claim 5, wherein the junction of the first inner ridge and the first outer ridge is higher than the first dovetail groove; the junction of the second inner ridge and the second outer ridge is higher than the second dovetail groove.
7. The PCB cutter with a core-thick dovetail trenching structure of claim 1 wherein the top end of the straight shank portion has a tapered section connected to the shank portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321902053.3U CN220612409U (en) | 2023-07-19 | 2023-07-19 | PCB cutter with thick forked tail ditching structure of core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321902053.3U CN220612409U (en) | 2023-07-19 | 2023-07-19 | PCB cutter with thick forked tail ditching structure of core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220612409U true CN220612409U (en) | 2024-03-19 |
Family
ID=90218484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321902053.3U Active CN220612409U (en) | 2023-07-19 | 2023-07-19 | PCB cutter with thick forked tail ditching structure of core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220612409U (en) |
-
2023
- 2023-07-19 CN CN202321902053.3U patent/CN220612409U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |