CN202070802U - Abandoning type drill bit - Google Patents
Abandoning type drill bit Download PDFInfo
- Publication number
- CN202070802U CN202070802U CN2011201236314U CN201120123631U CN202070802U CN 202070802 U CN202070802 U CN 202070802U CN 2011201236314 U CN2011201236314 U CN 2011201236314U CN 201120123631 U CN201120123631 U CN 201120123631U CN 202070802 U CN202070802 U CN 202070802U
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- CN
- China
- Prior art keywords
- drill bit
- locking hole
- groove
- brill
- hole
- 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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Abstract
The utility model discloses an abandoning type drill bit, which comprises a drill bit body and a cutting blade cooperating with the drill bit body. A groove is transversely equipped on the central part of a cutting end of the drill bit body. The bottom of the groove is provided with a positioning hole. The cutting blade comprises a cutting blade body and a positioning column equipped on the bottom of the cutting blade body. The cutting blade body is inserted into the groove. The positioning column is inserted into the positioning hole. A locking hole is transversely equipped on a drill bit body part adjacent to the cutting end. The locking hole is away from the medial axis of the drill bit body and intersects with the positioning hole. The positioning column is transversely provided with a positioning groove cooperating with the locking hole. A screw which is inserted into the locking hole is applied for fixing the cutting blade on the drill bit body. Compared with a common abandoning type drill bit, the drill bit in the utility model has better chip removal performances and enhanced connecting fixing strength. Meanwhile, when the drill bit is forced during a working process, the cutting blade will not be shaken. Therefore, excellent working performances of the drill bit are maintained.
Description
Technical field
The utility model relates to drill bit, particularly a kind of disposable type drill bit.
Background technology
In the prior art, drill bit commonly used generally all is integrally manufactured forming, and cutting edge and brill body are connected as a single entity, after cutting edge weares and teares at work, in the use of refacing.Because manual the refacing of drill bit can only be ground some simple brill types, make some good complicated brill types be difficult to promote, and drill bit generally just reface about 10 times, remaining just is out of use, thereby has caused the waste of material and money.
At present, the disposable type drill bit that has occurred some replaceable cutwork portions at this situation, this drill bit comprises the cutting tip on the cutting end of boring body and being fixed in this brill body, this cutting tip adopts the high-performance cutter material to make, the brill body adopts common iron to make and gets final product, thereby saved the use of high-quality steel, reduced cost, and use certain hour at drill bit, after wearing and tearing appear in cutting tip, can also compare traditional drill bit by changing the service behaviour that cutting tip keeps drill bit, prolong the service life of drill bit, reduced the waste of money.
But still there is bigger problem in such disposable type drill bit, owing to will offer the fixedly locking hole of usefulness on the cutting tip, so the height of cutting tip can not be too little, thereby the helical angle that has caused being located at the chip area on this cutting tip can not be accomplished at utmost, the helical angle of this chip area is identical with the angle of the helical angle of boring body, thereby has influenced the chip removal performance of drill bit.And the bottom of cutting tip is typically provided to rectangle, and the groove of ccontaining this cutting tip that is provided with in the cutting end of boring body also is a rectangle, and when drill bit work was stressed, cutting tip was easy to occur rocking, and influences serviceability.
The utility model content
The purpose of this utility model is, a kind of disposable type drill bit is provided, the helical angle of its chip area can be set very big, compares common disposable type drill bit, has better chip removal performance, and the bottom of cutting tip body is made as the inclined-plane, the bottom portion of groove that bores on one's body is made as the inclined-plane that matches with the bottom of this cutting tip body, has strengthened the intensity that is connected and fixed, make drill bit when work is stressed, rocking need not appear in cutting tip, keeps good working performance.
The technical scheme that the utility model is adopted for achieving the above object is:
A kind of disposable type drill bit, it comprises that one bores body and one and the cutting tip that is used of this brill body, the centre position of this brill body cutting end has been horizontally set with a groove, be provided with a locating hole in the bottom of this groove, described cutting tip comprises that a bite body and is arranged at the reference column of this bite body bottom, this bite inserted by main body is in described groove, this reference column is inserted in this locating hole, be horizontally set with a locking hole near the place, cutting end on one's body in described brill, this locking hole departs from the axis of boring body and occurs simultaneously mutually with described locating hole, be horizontally set with a locating slot that matches with this locking hole on described reference column, a screw is placed through in this locking hole this cutting tip is fixed on one's body the brill.
As further improvement of the utility model, the cross section of described locating slot is an arcwall face, the radius of this arcwall face is identical with the radius of described locking hole, when described reference column inserts locating hole, this locating slot is towards described locking hole, and this arcwall face is merged into a complete circle mutually with the internal face of this locking hole.
As further improvement of the utility model, the bottom surface of described groove is an inclined-plane, and the bottom of described bite body is an inclined-plane that matches with the bottom surface of this groove.
As further improvement of the utility model, this brill is provided with two spiral helicine chip areas on one's body around the axis, and the two ends of described groove extend on these two chip areas; This bite body is provided with the chip area with described brill chip area same-handed angle on one's body.
As further improvement of the utility model, described screw is formed in one, it comprises head, threaded shank and the polished rod portion that sets gradually, in the arcwall face that this polished rod portion is placed through described locating slot and the complete circular port that the internal face of locking hole is merged into mutually, this threaded shank matches with described locking hole this screw is fixed in the locking hole.
The beneficial effects of the utility model are: the utility model is simple and reasonable, owing on the bite body, do not offer the fixedly locking hole of usefulness, by cooperating of reference column and locating hole, locating slot, the cooperation of locking hole and screw, cutting tip is fixed on one's body the brill, thereby can be with the reduced height of bite body, the helical angle of the chip area on the bite body is increased, compare common disposable type drill bit, has better chip removal performance, and the bottom of cutting tip body is made as the inclined-plane, the bottom portion of groove that bores on one's body is made as the inclined-plane that matches with the bottom of this cutting tip body, has strengthened the intensity that is connected and fixed, make drill bit when work is stressed, rocking need not appear in cutting tip, keeps good working performance.
Below in conjunction with accompanying drawing and embodiment, the utility model is further specified.
Description of drawings
Fig. 1 is structural representation Fig. 1 of the present utility model;
Fig. 2 is structural representation Fig. 2 of the present utility model;
Fig. 3 is structural representation Fig. 3 of the present utility model;
Fig. 4 is the structural representation that bores body among Fig. 1;
Fig. 5 is structural representation Fig. 1 of cutting tip among Fig. 1;
Fig. 6 is structural representation Fig. 2 of cutting tip among Fig. 1;
Fig. 7 is the structural representation of screw among Fig. 1.
The specific embodiment
Embodiment: see Fig. 1 to Fig. 7, a kind of disposable type drill bit of the utility model, it comprises that one bores body 1 and one and the cutting tip 2 that is used of this brill body 1, the centre position of this brill body 1 cutting end has been horizontally set with a groove 11, be provided with a locating hole 12 in the bottom of this groove 11, described cutting tip 2 comprises that a bite body 21 and is arranged at the reference column 22 of these bite body 21 bottoms, this bite body 21 is inserted in the described groove 11, this reference column 22 is inserted in this locating hole 12, on described brill body 1, be horizontally set with a locking hole 13 near the place, cutting end, this locking hole 13 departs from the axis of boring body 1 and occurs simultaneously mutually with described locating hole 12, be placed through in this locking hole 13 this cutting tip 2 is fixed in and bore on the body 1 in being horizontally set with locating slot 23, one screws 3 that match with this locking hole 13 on the described reference column 22.
The cross section of described locating slot 23 is an arcwall face, the radius of this arcwall face is identical with the radius of described locking hole 13, when described reference column 22 inserted locating hole 12, this locating slot 23 was towards described locking hole 13, and this arcwall face is merged into a complete circular port mutually with the internal face of this locking hole 13.
The bottom surface of described groove 11 is an inclined-plane, and the bottom of described bite body 21 is an inclined-plane that matches with the bottom surface of this groove 11.
Be provided with two spiral helicine chip areas 14 around the axis on this brill body 1, the two ends of described groove 11 extend on these two chip areas 14; This bite body 21 be provided with described brill body 1 on the chip area 24 at chip area 14 same-handed angles.
Described screw 3 is formed in one, it comprises head 31, threaded shank 32 and the polished rod portion 33 that sets gradually, in the arcwall face that this polished rod portion 33 is placed through described locating slot 23 and the complete circular port that the internal face of locking hole 13 is merged into mutually, this threaded shank 32 matches with described locking hole 13 this screw 3 is fixed in the locking hole 13.
When using the utility model product, these cutting tip 2 corresponding bodies 1 that bore are inserted, bite body 21 is inserted in the described groove 11, this reference column 22 is inserted in this locating hole 12, locating slot 23 is towards described locking hole 13 at this moment, and this arcwall face is merged into a complete circular port mutually with the internal face of this locking hole 13.Described screw 3 is inserted in this locking hole 13, and the arcwall face that polished rod portion 33 is placed in locating slot 23 merges in the formed circular port mutually with the internal face of locking hole 13, thereby this cutting tip 2 is fixed on the brill body 1.Owing on bite body 21, do not offer the fixedly locking hole 13 of usefulness, thereby can be with the reduced height of bite body 21, the helical angle of the chip area on the bite body 21 24 is increased, compare common disposable type drill bit, has better chip removal performance, and the bottom of cutting tip 2 bodies is made as the inclined-plane, groove 11 bottoms of boring on the body 1 are made as the inclined-plane that matches with the bottom of this cutting tip 2 bodies, strengthened the intensity that is connected and fixed, make drill bit when work is stressed, rocking need not appear in cutting tip 2, keeps good working performance.
As described in the utility model embodiment, with other disposable type drill bits of the same or similar structure of the utility model, all in the utility model protection domain.
Claims (5)
1. disposable type drill bit, it is characterized in that: it comprises that one bores body and one and the cutting tip that is used of this brill body, the centre position of this brill body cutting end has been horizontally set with a groove, be provided with a locating hole in the bottom of this groove, described cutting tip comprises that a bite body and is arranged at the reference column of this bite body bottom, this bite inserted by main body is in described groove, this reference column is inserted in this locating hole, be horizontally set with a locking hole near the place, cutting end on one's body in described brill, this locking hole departs from the axis of boring body and occurs simultaneously mutually with described locating hole, be horizontally set with a locating slot that matches with this locking hole on described reference column, a screw is placed through in this locking hole this cutting tip is fixed on one's body the brill.
2. disposable type drill bit according to claim 1, it is characterized in that, the cross section of described locating slot is an arcwall face, the radius of this arcwall face is identical with the radius of described locking hole, when described reference column inserts locating hole, this locating slot is towards described locking hole, and this arcwall face is merged into a complete circular port mutually with the internal face of this locking hole.
3. disposable type drill bit according to claim 2 is characterized in that, the bottom surface of described groove is an inclined-plane, and the bottom of described bite body is an inclined-plane that matches with the bottom surface of this groove.
4. disposable type drill bit according to claim 3 is characterized in that, this brill is provided with two spiral helicine chip areas on one's body around the axis, and the two ends of described groove extend on these two chip areas; This bite body is provided with the chip area with described brill chip area same-handed angle on one's body.
5. disposable type drill bit according to claim 4, it is characterized in that, described screw is formed in one, it comprises head, threaded shank and the polished rod portion that sets gradually, in the arcwall face that this polished rod portion is placed through described locating slot and the complete circular port that the internal face of locking hole is merged into mutually, this threaded shank matches with described locking hole this screw is fixed in the locking hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201236314U CN202070802U (en) | 2011-04-25 | 2011-04-25 | Abandoning type drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201236314U CN202070802U (en) | 2011-04-25 | 2011-04-25 | Abandoning type drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202070802U true CN202070802U (en) | 2011-12-14 |
Family
ID=45108913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201236314U Expired - Fee Related CN202070802U (en) | 2011-04-25 | 2011-04-25 | Abandoning type drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202070802U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI611852B (en) * | 2017-05-05 | 2018-01-21 | Hsin Tien Chang | Burr chamfering tool structure |
| CN112605439A (en) * | 2020-12-26 | 2021-04-06 | 东莞艾瑞克精密工具有限公司 | Drill bit convenient to disassemble and maintain |
-
2011
- 2011-04-25 CN CN2011201236314U patent/CN202070802U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI611852B (en) * | 2017-05-05 | 2018-01-21 | Hsin Tien Chang | Burr chamfering tool structure |
| CN112605439A (en) * | 2020-12-26 | 2021-04-06 | 东莞艾瑞克精密工具有限公司 | Drill bit convenient to disassemble and maintain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SU MAOJUN Free format text: FORMER OWNER: DONGGUAN MINIMALLY INVASIVE INSTRUMENT TECHNOLOGY CO., LTD. Effective date: 20120619 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 523013 DONGGUAN, GUANGDONG PROVINCE TO: 523000 DONGGUAN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120619 Address after: 523000 Guangdong province Dongguan City Wanjiang Jiangbin Garden 7 10 3C Patentee after: Su Maojun Address before: 523013 Guangdong Province, Dongguan City Wanjiang Stubbs Jiao Wo Industrial Zone Patentee before: Dongguan City Microcreate Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140425 |