CN202984751U - Compound drill bit - Google Patents
Compound drill bit Download PDFInfo
- Publication number
- CN202984751U CN202984751U CN 201220692625 CN201220692625U CN202984751U CN 202984751 U CN202984751 U CN 202984751U CN 201220692625 CN201220692625 CN 201220692625 CN 201220692625 U CN201220692625 U CN 201220692625U CN 202984751 U CN202984751 U CN 202984751U
- Authority
- CN
- China
- Prior art keywords
- blade
- boron nitride
- cubic boron
- drill bit
- docking structure
- 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 - Lifetime
Links
Images
Landscapes
- Drilling Tools (AREA)
Abstract
The utility model discloses a compound drill bit which comprises a steel drill stock and a cubic boron nitride polycrystalline drill lip blade, wherein a blade body made of a hard alloy is fixedly arranged at the front end of the drill stock; the cubic boron nitride polycrystalline drill lip blade is welded at the front end of the blade body; and a butting structure is arranged between the drill lip blade and the blade body. According to the compound drill bit, a cubic boron nitride glomerocryst is welded at the front end of the hard alloy body; since the thermal expansivity of the cubic boron nitride glomerocryst is matched with that of the hard alloy, cracks are not generated easily on a butting surface between the cubic boron nitride glomerocryst and the hard alloy; and the problem that defects are caused by direct welding of the cubic boron nitride glomerocryst with the steel drill stock is solved.
Description
Technical field
The utility model relates to a kind of hole machining tool, relates in particular to a kind of composite drill bit, belongs to the machine tools technical field.
Background technology
The Chinese patent notification number is CN201405104Y, open day be February 17 in 2010 day, be called in the utility model patent of " cubic boron nitride drill bit " and disclose a kind of cubic boron nitride drill bit, this drill bit comprises cubic boron nitride blade and tool steel drillstock, in flat recess with the drillstock head of packing into of two cubic boron nitride blade a positive and a negative, welding forms drill bit.Polycrystalline cubic boron nitride and tool steel drill bit adopt the mode of directly welding, and because the thermal coefficient of expansion of cubic boron nitride material and steel drillstock does not mate, easily crack at weld, cause defective.
Summary of the invention
The utility model provides a kind of composite drill bit, the problem that easily cracks with the weld that solves prior art cubic boron nitride blade and tool steel handle of a knife.
For achieving the above object, the utility model adopts following technical scheme: a kind of composite drill bit, comprise steel drillstock and polycrystalline cubic boron nitride drill lip blade, the front end of described drillstock is fixedly installed the blade base of being made by carbide alloy, described polycrystalline cubic boron nitride drill lip blade is welded on the front end of blade base, has docking structure between described drill lip blade and blade base.
Described blade base is welded on described drillstock.
Described docking structure is the plane docking structure.
Described docking structure is the V-arrangement docking structure.
Described docking structure is the arc docking structure.
The both sides of described blade base front end are arranged with the blade embedding slot, and described polycrystalline cubic boron nitride is welded in described blade embedding slot, the common V-arrangement head that consists of described composite drill bit of blade base front end and polycrystalline cubic boron nitride.
Described docking structure is to be arranged on the in-line groove that docks end face of polycrystalline cubic boron nitride drill lip blade and blade base and to be arranged on to coincide on blade base to insert protuberance in described in-line groove.
The utility model is welded on polycrystalline cubic boron nitride the front end of hard alloy substrate, due to polycrystalline cubic boron nitride and carbide alloy matched coefficients of thermal expansion, therefore the interface of polycrystalline cubic boron nitride and carbide alloy is difficult for cracking, and has therefore solved polycrystalline cubic boron nitride and steel drillstock and has directly welded the problem that causes defective.
Further, the V-arrangement docking structure is easily located polycrystalline cubic boron nitride drill lip blade when welding.
Further, the arc docking structure makes polycrystalline cubic boron nitride drill lip blade be difficult for producing the stress of concentrating when welding, has guaranteed welding quality.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2;
Fig. 3 is the structural representation of the utility model embodiment 3;
Fig. 4 is the structural representation of the utility model embodiment 4;
Fig. 5 is the structural representation of the utility model embodiment 5;
Fig. 6 is the structural representation of the utility model embodiment 6;
Fig. 7 is the structural representation of the utility model embodiment 7.
The specific embodiment
The structural representation of the utility model embodiment 1 as shown in Figure 1, the composite drill bit of the present embodiment comprises steel drillstock 3 and polycrystalline cubic boron nitride drill lip blade 1, the front end of drillstock is welded with the blade base 2 of being made by carbide alloy, described polycrystalline cubic boron nitride drill lip blade 1 is welded on the front end of blade base 2 by the welding manner of vacuum brazing, have docking structure between described drill lip blade and blade base, the docking structure of the present embodiment is the plane docking structure.
The structural representation of the utility model embodiment 2 as shown in Figure 2, different from the utility model embodiment 1 is, docking structure between drill lip blade and blade base is the V-arrangement docking structure, and the V-arrangement point of this V-arrangement docking structure and the V-arrangement point of composite drill bit blade are over against setting.
The structural representation of the utility model embodiment 3 as shown in Figure 3, different from the utility model embodiment 2 is that the V-arrangement face of V-arrangement docking structure is parallel with the V-arrangement face of composite drill bit blade.
The structural representation of the utility model embodiment 4 as shown in Figure 4, different from the utility model embodiment 1 is, docking structure between drill lip blade and blade base is the arc docking structure, the interface of blade base is arc-shaped concave, and the interface of corresponding drill lip blade is the protruding cambered surface with described arc-shaped concave complementation.
The structural representation of the utility model embodiment 5 as shown in Figure 5, different from the utility model embodiment 4 is, the interface of blade base is the cambered surface of projection, the interface of corresponding drill lip blade is the arc-shaped concave with the cambered surface complementation of described projection.
The structural representation of the utility model embodiment 6 as shown in Figure 6, different from the utility model embodiment 1 is the different of docking structure, the both sides of blade base front end are arranged with the blade embedding slot, polycrystalline cubic boron nitride is welded in described blade embedding slot, the common V-arrangement head that consists of described composite drill bit of blade base front end and polycrystalline cubic boron nitride.
The structural representation of the utility model embodiment 7 as shown in Figure 7, different from the utility model embodiment 1 is, described docking structure is to be arranged on the in-line groove that docks end face of polycrystalline cubic boron nitride drill lip blade and blade base and to be arranged on to coincide on blade base to insert protuberance in the in-line groove.
In above each embodiment, blade base can not be welded on drillstock, and blade base also can be bolted to connection on drillstock.
Claims (7)
1. composite drill bit, comprise steel drillstock and polycrystalline cubic boron nitride drill lip blade, it is characterized in that: the front end of described drillstock is fixedly installed the blade base of being made by carbide alloy, described polycrystalline cubic boron nitride drill lip blade is welded on the front end of blade base, has docking structure between described drill lip blade and blade base.
2. a kind of composite drill bit according to claim 1, it is characterized in that: described blade base is welded on described drillstock.
3. a kind of composite drill bit according to claim 1 and 2, it is characterized in that: described docking structure is the plane docking structure.
4. a kind of composite drill bit according to claim 1 and 2, it is characterized in that: described docking structure is the V-arrangement docking structure.
5. a kind of composite drill bit according to claim 1 and 2, it is characterized in that: described docking structure is the arc docking structure.
6. a kind of composite drill bit according to claim 1 and 2, it is characterized in that: the both sides of described blade base front end are arranged with the blade embedding slot, described polycrystalline cubic boron nitride is welded in described blade embedding slot, the common V-arrangement head that consists of described composite drill bit of blade base front end and polycrystalline cubic boron nitride.
7. a kind of composite drill bit according to claim 1 and 2 is characterized in that: described docking structure is to be arranged on the in-line groove that docks end face of polycrystalline cubic boron nitride drill lip blade and blade base and to be arranged on to coincide on blade base to insert protuberance in described in-line groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220692625 CN202984751U (en) | 2012-12-15 | 2012-12-15 | Compound drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220692625 CN202984751U (en) | 2012-12-15 | 2012-12-15 | Compound drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202984751U true CN202984751U (en) | 2013-06-12 |
Family
ID=48555973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220692625 Expired - Lifetime CN202984751U (en) | 2012-12-15 | 2012-12-15 | Compound drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202984751U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107738077A (en) * | 2017-11-14 | 2018-02-27 | 富耐克超硬材料股份有限公司 | Whole PC BN circular rod-shaped cutting tools and preparation method thereof |
| CN109877551A (en) * | 2019-03-20 | 2019-06-14 | 苏州山德精密工具有限公司 | PCD table rank rose reamer processing technology |
| CN110125627A (en) * | 2019-06-19 | 2019-08-16 | 廊坊西波尔钻石技术有限公司 | A kind of PCD and hard alloy composite drill head and its manufacturing method |
-
2012
- 2012-12-15 CN CN 201220692625 patent/CN202984751U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107738077A (en) * | 2017-11-14 | 2018-02-27 | 富耐克超硬材料股份有限公司 | Whole PC BN circular rod-shaped cutting tools and preparation method thereof |
| CN109877551A (en) * | 2019-03-20 | 2019-06-14 | 苏州山德精密工具有限公司 | PCD table rank rose reamer processing technology |
| CN110125627A (en) * | 2019-06-19 | 2019-08-16 | 廊坊西波尔钻石技术有限公司 | A kind of PCD and hard alloy composite drill head and its manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202984751U (en) | Compound drill bit | |
| CN203091760U (en) | Cutter head connecting structure of hard alloy cutter | |
| CN201776524U (en) | Special alloy saw blade for cutting aluminium materials | |
| CN202639371U (en) | Polycrystalline cubic boron nitride (PCBN) cutter for machining cylinder body | |
| CN201618863U (en) | Diamond cutter used for finish turning of DC traction motor commutator | |
| CN202639365U (en) | Welding molding cutter | |
| CN202411453U (en) | Polycrystalline diamond welding arc edge transition forming knife | |
| CN202185627U (en) | Disc milling cutter | |
| CN202639449U (en) | Polycrystalline diamond composite sheet milling cutter box | |
| CN203791647U (en) | Boring cutter for machining inner bore of automobile engine | |
| CN201257538Y (en) | Polycrystalline diamond milling cutter box | |
| CN201552944U (en) | Tip-shaped double-faced cutting tool for machine tool cutting | |
| CN205254206U (en) | MCD single crystal highlight milling cutter | |
| CN202411445U (en) | Embedded type welded polycrystalline diamond turning tool blade | |
| CN201889493U (en) | Tool box for milling front surface of cylinder cover of engine | |
| CN216028138U (en) | Machine presss from both sides heavy lathe tool of welding | |
| CN209867498U (en) | Whole PCD rough machining milling cutter based on HSK63 handle of a knife | |
| CN203649483U (en) | Alloy butt-welded taper-shank drill | |
| CN204532107U (en) | The mono-line bit of dovetail mount blade and screw assembling | |
| CN202701416U (en) | Polycrystalline composite welding cutter | |
| CN203956164U (en) | Bimetallic brazed shank tool | |
| CN202317197U (en) | Milling tool blade for processing car cylinder upper end face | |
| CN202701423U (en) | Diamond-shaped superhard welding tool | |
| CN201889497U (en) | Face milling blade for processing engine cylinder cover | |
| CN202667688U (en) | Composite boring cutter for deep hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FUNIK ULTRAHARD MATERIALS CO., LTD. Free format text: FORMER NAME: HE'NAN FUNIK ULTRAHARD MATERIAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 Zhengzhou high tech Industrial Development Zone, Henan, Holly Street, No. 16 Patentee after: FUNIK ULTRAHARD MATERIAL Co.,Ltd. Address before: 450001 Zhengzhou high tech Industrial Development Zone, Henan, Holly Street, No. 16 Patentee before: HENAN FUNIK ULTRAHARD MATERIAL Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |