CN204470664U - A kind of drill bit - Google Patents
A kind of drill bit Download PDFInfo
- Publication number
- CN204470664U CN204470664U CN201520049895.8U CN201520049895U CN204470664U CN 204470664 U CN204470664 U CN 204470664U CN 201520049895 U CN201520049895 U CN 201520049895U CN 204470664 U CN204470664 U CN 204470664U
- Authority
- CN
- China
- Prior art keywords
- cutting head
- cutting
- fixture block
- drill bit
- draw
- 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.)
- Expired - Fee Related
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model proposes a kind of drill bit, comprise drill body and the cutting portion being fixed on drill body one end, the fixture block that described cutting portion is provided with draw-in groove and is connected with draw-in groove, the contact surface of described fixture block and draw-in groove is provided with the block preventing deformation; The connecting portion of this fixture block and draw-in groove is provided with magnetic patch; Described cutting portion includes the first cutting head, the second cutting head, the 3rd cutting head and the 4th cutting head, and the outer wall of those cutting head is greater than the inwall of cutting head.This drill bit intensity is high, long service life; Structure is simple, there will not be stuck phenomenon.
Description
Technical field
The utility model relates to a kind of drill bit.
Background technology
Drill bit is people's requisite instruments in the industrial production.For the structure of drill bit, people have done many improvement.Existing drill bit, includes drill body, cutting portion, draw-in groove and fixture block; Fixture block be provided with back-moving spring and steel ball and realize clamping or unclamping by back-moving spring and steel ball and draw-in groove, but the shape of draw-in groove is rectangle, and the travel path of fixture block is arc.Therefore, in operation, may there is stuck phenomenon, thus scrap drill bit in existing drill bit.Also have the connecting portion of fixture block and draw-in groove, adopt ordinary steel iron to form, the softer easy generation deformation of material, thus also there will be stuck phenomenon.The cutting portion of existing drill bit is due to structural design, and easily occur the situation of the section of collapsing or blade distortion, service life is short.
Utility model content
The utility model proposes a kind of drill bit, to solve in prior art drill bit fixture block easily stuck and fixture block produce deformation thus scrap drill bit and the fragile problem affecting drilling life of bit of cutting portion.
The technical solution of the utility model is achieved in that a kind of drill bit, comprise drill body and the cutting portion being fixed on drill body one end, the fixture block that described cutting portion is provided with draw-in groove and is connected with draw-in groove, the contact surface of described fixture block and draw-in groove is provided with the block preventing deformation; The connecting portion of this fixture block and draw-in groove is provided with magnetic patch; Described cutting portion includes the first cutting head, the second cutting head, the 3rd cutting head and the 4th cutting head, and the outer wall of those cutting head is greater than the inwall of cutting head.
The utility model fixture block and draw-in groove adopt magnetic to be connected, and can effectively stop the situation of scrapping drill bit because of stuck; Fixture block is provided with a block, increases the intensity of fixture block, prevent fixture block to be subject to brute force and produce deformation; The outer wall of cutting head is greater than the inwall of cutting head, is to expand its lifting surface area, increases the intensity of cutting head.
Further restriction, described block is hard alloy blocks.
The intensity of further increase fixture block.
Further restriction, the end face of described first cutting head, the second cutting head, the 3rd cutting head and the 4th cutting head is respectively equipped with cutting teeth.
Further restriction, is provided with cutting slot between described adjacent cutting head.
Further restriction, it is interior and hinged with cutting portion that described fixture block is arranged on cutting slot.
Further restriction, described drill body is provided with chip-removal hole.
Compared with prior art, the beneficial effect that possesses of the utility model is as follows:
The utility model fixture block and draw-in groove adopt magnetic to be connected, and can effectively stop the situation of scrapping drill bit because of stuck; Fixture block is provided with a block, increases the intensity of fixture block, prevent fixture block to be subject to brute force and produce deformation; The outer wall of cutting head is greater than the inwall of cutting head, is to expand its lifting surface area, increases the intensity of cutting head.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is schematic perspective view of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1-2, a kind of drill bit, comprises drill body 1 and the cutting portion 2 being fixed on drill body 1 one end.Have a chip-removal hole 10 in the center of drill body 1, cutting portion 2 is extended in this hole.The fixture block 3 that cutting portion 2 is provided with draw-in groove 4 and is connected with draw-in groove 4.Fixture block 3 with the contact surface of draw-in groove 4 are provided with the block 7 preventing deformation, and this block 7 adopts carbide alloy to make, and in order to improve the intensity of fixture block 3 further, prevents fixture block 3 from producing deformation by brute force; .Fixture block 3 with the connecting portion of draw-in groove 4 are provided with magnetic patch 6; This connecting portion is the lower surface of fixture block 3.The utility model fixture block 3 adopts magnetic to be connected with draw-in groove 4, can effectively stop the situation of scrapping drill bit because of stuck.Cutting portion 2 includes the first cutting head 21, second cutting head 22, the 3rd cutting head 23 and the 4th cutting head 24, and the outer wall of those cutting head is greater than the inwall of cutting head.Such design is to expand its lifting surface area, increases the intensity of cutting head.Wherein, the end face of the first cutting head 21, second cutting head 22, the 3rd cutting head 23 and the 4th cutting head 24 is respectively equipped with cutting teeth 9.Cutting slot 8 is provided with between adjacent cutting head.Wherein, fixture block 3 to be just arranged in cutting slot 8 and hinged with cutting portion 2.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a drill bit, comprises drill body and is fixed on the cutting portion of drill body one end, described cutting portion be provided with draw-in groove and with the fixture block that draw-in groove is connected, it is characterized in that, the contact surface of described fixture block and draw-in groove is provided with prevent deformation prop up block; The connecting portion of this fixture block and draw-in groove is provided with magnetic patch; Described cutting portion includes the first cutting head, the second cutting head, the 3rd cutting head and the 4th cutting head, and the outer wall of those cutting head is greater than the inwall of cutting head.
2. a kind of drill bit according to claim 1, is characterized in that, described block is hard alloy blocks.
3. a kind of drill bit according to claim 1, is characterized in that, the end face of described first cutting head, the second cutting head, the 3rd cutting head and the 4th cutting head is respectively equipped with cutting teeth.
4. a kind of drill bit according to claim 3, is characterized in that, is provided with cutting slot between described adjacent cutting head.
5. a kind of drill bit according to claim 4, is characterized in that, it is interior and hinged with cutting portion that described fixture block is arranged on cutting slot.
6. a kind of drill bit according to claim 5, is characterized in that, described drill body is provided with chip-removal hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520049895.8U CN204470664U (en) | 2015-01-23 | 2015-01-23 | A kind of drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520049895.8U CN204470664U (en) | 2015-01-23 | 2015-01-23 | A kind of drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204470664U true CN204470664U (en) | 2015-07-15 |
Family
ID=53626415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520049895.8U Expired - Fee Related CN204470664U (en) | 2015-01-23 | 2015-01-23 | A kind of drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204470664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115570185A (en) * | 2022-11-09 | 2023-01-06 | 山东大学 | Large-diameter composite machine clamp type deep hole drill |
-
2015
- 2015-01-23 CN CN201520049895.8U patent/CN204470664U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115570185A (en) * | 2022-11-09 | 2023-01-06 | 山东大学 | Large-diameter composite machine clamp type deep hole drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20180123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |