CN204584365U - The fluted drill of replaceable drill tip - Google Patents
The fluted drill of replaceable drill tip Download PDFInfo
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- CN204584365U CN204584365U CN201520311499.8U CN201520311499U CN204584365U CN 204584365 U CN204584365 U CN 204584365U CN 201520311499 U CN201520311499 U CN 201520311499U CN 204584365 U CN204584365 U CN 204584365U
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- hole
- locating
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- detent
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Abstract
The utility model provides a kind of fluted drill of replaceable drill tip, belongs to cutting tool technical field.It solve the problem that existing fluted drill can not change apex point.The fluted drill of this replaceable drill tip, comprise drilling rod and the apex point being located at drill rod end, apex point and drilling rod are split-type structural, the end of drilling rod is provided with detent, the lower end of described apex point be provided with the positioning convex body that matches with detent and, positioning convex body is embedded in detent, the bottom land of detent is axially arranged with locating hole, the bottom surface of positioning convex body is axially arranged with and matches and the locating dowel protruded with locating hole, the sidewall of drilling rod is provided with pin-and-hole, the inner of pin-and-hole is connected with hole, position, pin is provided with in pin-and-hole, the top, the inner of pin is pressed on the lateral wall of locating dowel.The fluted drill of this replaceable drill tip has changes apex point conveniently advantage.
Description
Technical field
The utility model belongs to cutting tool technical field, relates to a kind of fluted drill, particularly a kind of fluted drill of replaceable drill tip.
Background technology
The drill bit conventional at present form adopting one, namely the bar portion, cutting edge, chip pocket etc. of drill bit are an entirety, all use identical material to make more.After the cutting edge partial destruction of drill bit, whole drill bit just must sharpening or replacing again.Therefore consider cutting edge part and drill bit shaft portion to be made into independent detachable unit form, " head-exchangeable " form that namely those of ordinary skill in the art are usually alleged.This head-exchangeable part can be changed after wear very easily, thus make expensive cutter hub can use the longer time, and head-exchangeable part can by hard wear-resistant material, and such as carbide alloy is made, and cutter hub can by having larger flexible material, such as steel is made.But head-exchangeable structure often exists the problem such as structural instability, position error, therefore how excellent, stabilized structure, head-changeable the taper drill of processability becomes the problem that each side personage makes great efforts solution.
For this reason, Chinese patent discloses a kind of head-changeable hard alloy taper drill [Authorization Notice No. is CN 203578866 U], it comprises bores body and drillstock, bore body top and be provided with demountable bit, bore body top and have a screwed hole, screwed hole sidewall has tapped through hole, drill bit rear end is provided with a locating piece matched with screwed hole, locating piece outer wall is provided with screw thread, locating piece has the tapped blind hole matched with tapped through hole, bore body to be fixedly connected with screwed hole by locating piece with drill bit, brill body and drill bit are located by connecting by tapped through hole and tapped blind hole by screw.But the more sliding of the drill bit of this fluted drill comparatively bothers, drill bit is tightened onto bore with it time, easily hinder the both hands of operator, therefore change comparatively inconvenience.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of fluted drill changing apex point conveniently replaceable drill tip.
The purpose of this utility model realizes by following technical proposal: the fluted drill of replaceable drill tip, comprise drilling rod and the apex point being located at drill rod end, described apex point and described drilling rod are split-type structural, it is characterized in that, the end of described drilling rod is provided with detent, the lower end of described apex point is provided with the positioning convex body that matches with described detent and described positioning convex body is embedded in described detent, the bottom land of described detent is axially arranged with locating hole, the bottom surface of described positioning convex body is axially arranged with and matches and the locating dowel protruded with described locating hole, the sidewall of described drilling rod is provided with pin-and-hole, the inner of described pin-and-hole is connected with described locating hole, pin is provided with in described pin-and-hole, the top, the inner of described pin is pressed on the lateral wall of described locating dowel.
When changing apex point, being embedded in detent by positioning convex body, and making in the potential locating hole of locating dowel, locating dowel is being positioned on locating hole by pin through drilling rod, there is structure simple and change conveniently advantage.
In the fluted drill of above-mentioned replaceable drill tip, described locating dowel is regular polygon, the shape of described locating hole and the mating shapes of described locating dowel.Locating dowel and locating hole are regular polygon, have the good advantage of circumferential locating effect.
In the fluted drill of above-mentioned replaceable drill tip, the medial surface of described detent is locating surface one, and the lateral surface of described positioning convex body is locating surface two and described locating surface two is close on described locating surface one.Abutted on locating surface two by locating surface one, circumference between apex point and drilling rod is connected, relatively rotating of both restrictions.
In the fluted drill of above-mentioned replaceable drill tip, described locating hole is bellmouth, and described locating dowel is the tapered pole matched with described locating hole.Locating hole is bellmouth, and the tapered post of locating dowel, has better locating effect.
In the fluted drill of above-mentioned replaceable drill tip, the tapering of described bellmouth is 2 °-4 °.
In the fluted drill of above-mentioned replaceable drill tip, described apex point adopts high strength cemented carbide material to make.Apex point adopts high strength cemented carbide material to make, and has longer advantage power in service life.
Compared with prior art, the fluted drill of this replaceable drill tip has the following advantages:
1, be embedded in detent by positioning convex body, and make in the potential locating hole of locating dowel, locating dowel is being positioned on locating hole by pin through drilling rod, there is structure simple and change conveniently advantage;
2, locating dowel and locating hole are regular polygon, have the good advantage of circumferential locating effect;
3, abutted on locating surface two by locating surface one, circumference between apex point and drilling rod is connected, relatively rotating of both restrictions.
4, locating hole is bellmouth, and the tapered post of locating dowel, has better locating effect.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of the fluted drill of this replaceable drill tip.
Fig. 2 is the another kind of apex point schematic perspective view of the fluted drill of this replaceable drill tip.
In figure, 1, drilling rod; 1a, detent; 1b, locating hole; 1c, locating surface one; 2, apex point; 2a, positioning convex body; 2b, locating dowel; 2c, locating surface two; 3, pin.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, the fluted drill of replaceable drill tip, comprises drilling rod 1 and is located at drilling rod 1 end and adopts high strength cemented carbide material to make.Apex point 2, apex point 2 and drilling rod 1 are split-type structural, the end of drilling rod 1 is provided with detent 1a, the lower end of apex point 2 is provided with the positioning convex body 2a matched with detent 1a, positioning convex body 2a is embedded in detent 1a, the medial surface of detent 1a is that the lateral surface of locating surface one 1c, positioning convex body 2a is locating surface two 2c and locating surface two 2c is close on locating surface one 1c.
The bottom land of detent 1a is axially arranged with locating hole 1b, and the bottom surface of positioning convex body 2a is axially arranged with and matches with locating hole 1b and the locating dowel 2b protruded, locating hole 1b are bellmouth, and locating dowel 2b is the tapered pole matched with locating hole 1b.The tapering of bellmouth is 2 °-4 °.Locating hole 1b is bellmouth, and the tapered post of locating dowel 2b, has better locating effect.
The sidewall of drilling rod 1 is provided with pin-and-hole, and the inner of pin-and-hole is connected with locating hole 1b, is provided with pin 3 in pin-and-hole, and the top, the inner of pin 3 is pressed on the lateral wall of locating dowel 2b.
Alternatively, as shown in Figure 2, locating dowel 2b is regular hexagon, and the shape of locating hole 1b and the mating shapes of locating dowel 2b have the good advantage of circumferential locating effect.
When changing apex point 2, being embedded in detent 1a by positioning convex body 2a, and making in the potential locating hole 1b of locating dowel 2b, through drilling rod 1, locating dowel 2b is being positioned on locating hole 1b by pin 3, there is structure simple and change conveniently advantage.Abutted on locating surface two 2c by locating surface one 1c, circumference between apex point 2 and drilling rod 1 is connected, relatively rotating of both restrictions.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the term such as drilling rod 1, detent 1a, locating hole 1b, locating surface one 1c, apex point 2, positioning convex body 2a, locating dowel 2b, locating surface two 2c, pin 3 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (5)
1. the fluted drill of replaceable drill tip, comprise drilling rod (1) and be located at the apex point (2) of drilling rod (1) end, described apex point (2) and described drilling rod (1) are split-type structural, it is characterized in that, the end of described drilling rod (1) is provided with detent (1a), the lower end of described apex point (2) is provided with the positioning convex body (2a) that matches with described detent (1a) and described positioning convex body (2a) is embedded in described detent (1a), the bottom land of described detent (1a) is axially arranged with locating hole (1b), the bottom surface of described positioning convex body (2a) is axially arranged with and matches and the locating dowel (2b) protruded with described locating hole (1b), the sidewall of described drilling rod (1) is provided with pin-and-hole, the inner of described pin-and-hole is connected with described locating hole (1b), pin (3) is provided with in described pin-and-hole, the top, the inner of described pin (3) is pressed on the lateral wall of described locating dowel (2b).
2. the fluted drill of replaceable drill tip according to claim 1, is characterized in that, described locating dowel (2b) is regular polygon, the shape of described locating hole (1b) and the mating shapes of described locating dowel (2b).
3. the fluted drill of replaceable drill tip according to claim 1 and 2, it is characterized in that, the medial surface of described detent (1a) is locating surface one (1c), and the lateral surface of described positioning convex body (2a) is locating surface two (2c) and described locating surface two (2c) is close on described locating surface one (1c).
4. the fluted drill of replaceable drill tip according to claim 1 and 2, is characterized in that, described locating hole (1b) is bellmouth, and described locating dowel (2b) is the tapered pole matched with described locating hole (1b).
5. the fluted drill of replaceable drill tip according to claim 1 and 2, is characterized in that, described apex point (2) adopts high strength cemented carbide material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311499.8U CN204584365U (en) | 2015-05-14 | 2015-05-14 | The fluted drill of replaceable drill tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311499.8U CN204584365U (en) | 2015-05-14 | 2015-05-14 | The fluted drill of replaceable drill tip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204584365U true CN204584365U (en) | 2015-08-26 |
Family
ID=53920563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520311499.8U Expired - Fee Related CN204584365U (en) | 2015-05-14 | 2015-05-14 | The fluted drill of replaceable drill tip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204584365U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834463A (en) * | 2016-04-29 | 2016-08-10 | 厦门金鹭特种合金有限公司 | Pin wedge grafting type hole machining tool capable of being replaced in on-machine mode |
| CN111361020A (en) * | 2020-03-25 | 2020-07-03 | 大连理工大学 | Split drilling tool connecting structure for high-speed machining |
| CN114029532A (en) * | 2021-12-13 | 2022-02-11 | 株洲钻石切削刀具股份有限公司 | Modular drilling machining tool |
-
2015
- 2015-05-14 CN CN201520311499.8U patent/CN204584365U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834463A (en) * | 2016-04-29 | 2016-08-10 | 厦门金鹭特种合金有限公司 | Pin wedge grafting type hole machining tool capable of being replaced in on-machine mode |
| CN111361020A (en) * | 2020-03-25 | 2020-07-03 | 大连理工大学 | Split drilling tool connecting structure for high-speed machining |
| CN111361020B (en) * | 2020-03-25 | 2021-01-05 | 大连理工大学 | Split drilling tool connecting structure for high-speed machining |
| CN114029532A (en) * | 2021-12-13 | 2022-02-11 | 株洲钻石切削刀具股份有限公司 | Modular drilling machining tool |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20160514 |