CN101157150A - Poly blade hard metal drill - Google Patents
Poly blade hard metal drill Download PDFInfo
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- CN101157150A CN101157150A CNA2007101354323A CN200710135432A CN101157150A CN 101157150 A CN101157150 A CN 101157150A CN A2007101354323 A CNA2007101354323 A CN A2007101354323A CN 200710135432 A CN200710135432 A CN 200710135432A CN 101157150 A CN101157150 A CN 101157150A
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Abstract
The invention relates to a multi-edge solidness alloy drill, which belongs to the technical field of metal processing tool. The invention comprises a shank, a chamfer cutting edge arranged at the lower part of the shank, and a thread processing edge arranged at the lower part of the chamfer cutting edge, an aligning edge is arranged at the lower part of the thread processing edge, the chamfer cutting edge is of a spiral shape and can be extended and arranged at the lower part of the shank with equal-interval, and a first plow groove is formed between two adjacent chamfer cutting edges; the thread processing edge is of a spiral shape and can extend downward with equal-interval along a first bottom face of the chamfer cutting edge, a second plow groove connected with the first plow groove is formed between two adjacent chamfer cutting edges, the aligning edges are narrowed and extended serially to the center along the second bottom face of the thread processing edge and merged mutually in the center part, and a third plow groove connected with the second plow groove is formed between every two aligning edges. The invention has the advantages that the frequently drill changing during the processing of the hole shape can be avoided and the technical quality can be ensured; the invention is beneficial for the metal processing company to save the work fixture and the equipment cost; the processing efficiency can be improved above four times.
Description
Technical field
The invention belongs to metal machining tool technical field, be specifically related to a kind of poly blade hard metal drill.
Background technology
With regard to current well known materials and utilize material known to make with regard to the skill level of drill bit, people's common recognition is: only be the effective means that drill bit that the high hard alloy high-abrasive material of principal component is processed is only the wear-resisting inefficacy of control with the tungsten carbide, so the ultrafine dust carbide drill because of have the strength rigid ideal, wearability is high widely acts at the metal manufacture field.As Chinese patent Granted publication CN2808378Y in the background technology hurdle, concluded, carbide alloy is drilled with four classes, i.e. solid carbide drill, cemented carbide indexable insert formula drill bit, welded type carbide drill and replaceable carbide alloy crown drill bit.This patent has also been done objective commentary to the pluses and minuses of four types drill bit, has proposed the concrete improvement organization plan at replaceable carbide alloy crown drill bit.The achievement of patent is to change good stability in blade convenience, accurate intensity height, the use.
But, make a general survey of existing patent documentation and relevant professional journals, both do not seen up to now to hear yet report or the drill bit product that is able to significantly to shorten to the carbide drill of workpiece process time arranged, for example when will be to when processing a screwed hole on the workpiece and also have the fabrication hole of chamfering in the aperture or claim installing hole, usually need carry out with flow process shown in Figure 2 with following the prescribed order, select for use pilot drill 1a on workpiece 2, to be drilled with internal point 21a; Implement bottom outlet processing then, promptly bore 1b internal point 21a is processed into bottom outlet 21b (needing usually twice repeatedly) with bottom outlet processing; Thereafter do screw thread processing, use threaded bore 1c that bottom outlet 21b is processed into screwed hole 21c; At last, the aperture with chamfering brill 1d double thread hole 21c processes the chamfered bore 21d that expansion is established.This processing mode is with regard to phenomenon (formality) defective, and operation is loaded down with trivial details, process time is tediously long; With regard to substantive defect, there is the following aspects at least: the one, needs are equipped with the drill bit of multiple different structure, not only bad for user's management, and the deployment cost of increase drill bit; The 2nd, because the drill bit difference, corresponding clamping apparatus is also different, and therefore the clamping apparatus that is equipped with is numerous and complicated; The 3rd, in whole process, must use multi-station machine tool or similar equipment, causing the equipment amount of coming into operation increases; The 4th, owing to frequently change brill, to fabrication hole or claim the quality of workpiece hole can't ensure that often trueness error is bigger, can't satisfy high-precision processing request; The 5th, cooling fluid can only show part (surface) cooling to drill bit in process, so process velocity is restricted, otherwise had a strong impact on the service life of drill bit, and even scraps.
The applicant thinks, defective above-mentioned form, essence in fact all has due to the structural defect of drill bit, therefore, if can release aforesaid centering processing, bottom outlet processing, screw thread processing, chamfer machining are combined in a drill bit that bores, then can yet be regarded as is a kind of useful act that is remedied above-mentioned all defect.The technical scheme that the present invention will introduce below is based on producing under this background.
Summary of the invention
Task of the present invention is that a kind of poly blade hard metal drill will be provided, and it can be held concurrently centering processing, bottom outlet processing, hole processing and aperture chamfering and use embodiment and reduce drill bit use kind, save clamping apparatus, guarantee workpiece accuracy and working (machining) efficiency in a brill.
An also task of the present invention is to provide a kind of poly blade hard metal drill, and it can obtain in the course of the work by the ideal effect of cooling fluid to its cooling.
For finishing top priority of the present invention, technical scheme provided by the present invention is: a kind of poly blade hard metal drill, it comprises handle of a knife, chamfering cutting edge in the handle of a knife bottom, screw thread processing sword in chamfering cutting edge bottom, centering sword in screw thread processing sword bottom, described chamfering cutting edge constitutes first groove with spiral-shaped and to extend the bottom in handle of a knife equally spacedly between the adjacent chamfering cutting edge; Described screw thread processing sword is with spiral and extend downwards along first bottom surface of chamfering cutting edge equally spacedly, constitute second groove that communicates with first groove between the adjacent chamfering cutting edge, described centering sword extends and converges each other in the centre to narrow one by one the contracting in center along second bottom surface of described screw thread processing sword, and each is felt relieved and constitutes the 3rd groove that communicates with second groove between the sword.
For finishing an also task of the present invention, technical scheme provided by the present invention is: be provided with the cooling liquid bath that equates and communicate with the quantity of described first groove between the length direction of described handle of a knife upper edge handle of a knife.
In a specific embodiment of the present invention, described chamfering cutting edge, screw thread processing sword, centering sword respectively have three, and correspondingly described therewith first, second, third groove also respectively has three roads.
In another specific embodiment of the present invention, the shape of cross section of described cooling liquid bath is any one in U-lag, rectangular channel, the circular trough.
In another specific embodiment of the present invention, described first bottom surface is the inclined plane, and the angle of inclination is 15-80 °.
In another specific embodiment of the present invention, the surface configuration on described inclined plane is trapezoidal.
Go back in the specific embodiment of the present invention, the sword face of described centering sword is a triangle.
In of the present invention and then specific embodiment, constitute at least one milling flat on the described handle of a knife.
More of the present invention and in specific embodiment, the shape of cross section of described cooling liquid bath is a U-shaped.
Of the present invention again more and in specific embodiment, the shape of described the 3rd groove is in the shape of the letter V.
The advantage of technical scheme provided by the present invention:, therefore can avoid frequently changing brill and guarantee processing quality in the hole shape process because sword, the screw thread processing sword of will feel relieved, chamfering cutting edge organically be integrated on the same drill bit; Help metal process unit and save clamping apparatus and equipment expense; Improve working (machining) efficiency more than 4 times.
Description of drawings
Fig. 1 is a preferred embodiment structure chart of poly blade hard metal drill of the present invention.
Fig. 2 is to the process chart of the screwed hole of chamfering on the workpiece machining hole in the prior art.
The specific embodiment
By following description to embodiment; to help to understand essence of the present invention and beneficial effect more; but can't the specific embodiment that the applicant is given be considered as restriction to technical solution of the present invention, any definition to technical characterictic change and/or to overall structure do form but not the conversion of essence all should be considered as the protection domain that technical scheme of the present invention limits.
Please consult Fig. 1, the material of carbide drill provided by the invention (matter) is that tungsten carbide with ultrafine dust is a principal component, length direction at handle of a knife 1 (also claiming bit sub) upper edge handle of a knife 1 offers the cooling liquid bath 10 that shape of cross section is preferably U-shaped, certainly, cooling liquid bath 10 is processed into circular trough or claims O shape groove, also be fine fully.Scoop out the cooling fluid that is used to cool off as the cooling wet goods by cooling liquid bath 10 in working order down.In the present embodiment, owing to the chamfering cutting edge 2 that will mention below, screw thread processing sword 3, centering sword 4 respectively have three, therefore described cooling liquid bath 10 just has three roads.Be processed with milling flat 11 on the handle of a knife 1 between the two adjacent cooling liquid baths 10, self-evident, this milling flat 11 is provided convenience for installation, further says the effect of installing and fixing of bearing the responsibility, so the industry custom claims milling flat 11 to consolidate the plane for side.
Chamfering cutting edge 2 has three, each constitutes with spiral status and to extend in the bottom of handle of a knife 1 equally spacedly, constituting the groove that spiral with chamfering cutting edge 2 is the relation of following in sb's footsteps between the adjacent chamfering cutting edge 2 is spiral helicine first groove 5, angle for chamfering cutting edge 2 there is no need to limit in the present invention, because it can require according to user's difference to change, promptly specifically decide according to processed workpiece product requirement.Article three, first groove 5 corresponds respectively to cooling liquid bath 10, is used for guiding the cooling fluid of being introduced by cooling liquid bath 10.
Centering sword 4 contracts (being narrowed down by wide) and converges each other in the centre to the center is narrow gradually along three second bottom surfaces 8 of screw thread processing sword 3, the 3rd groove 9 that formed shape is tending towards the V font between the adjacent centering sword 4 communicates with second groove 7, is used for scooping out the cooling fluid of being introduced by second groove 7.The sword face 12 of centering sword 4 is triangular in shape substantially, and three points of converging in the centre of centering sword 4 promptly constitute workpiece is added the centering center 13 of feeling relieved man-hour.
The present invention can be obtained by the drill produced technology in the prior art, equipment by the structure of the poly blade hard metal drill that the foregoing description provided.The applicant utilizes and is carrying out testing (under confidential state) on the workpiece by the resulting drill bit of present embodiment, owing to there is not the such brill process of frequently changing of prior art, the result shockingly shows, the speed of processing the screwed hole (same size size, identical material) of same aperture chamfering has improved 5.5 times than prior art, and the precision in hole reached≤0.1um, and the trueness error of existing technology reaches 1um; On probation through 800h, the wearing and tearing of centering sword 4, screw thread processing sword 3, chamfering cutting edge 2 are zero, and the bit wear in the existing technology is 0.0018mm.Hence one can see that, and the technical scheme that the present invention recommended is ultimate attainment, can tackle workpiece requirement and day all tight processing.
Claims (10)
1. poly blade hard metal drill, it is characterized in that it comprises handle of a knife (1), chamfering cutting edge (2) in handle of a knife (1) bottom, screw thread processing sword (3) in chamfering cutting edge (2) bottom, centering sword (4) in screw thread processing sword (3) bottom, described chamfering cutting edge (2) constitutes first groove (5) with spiral-shaped and to extend equally spacedly in the bottom of handle of a knife (1) between the adjacent chamfering cutting edge (2); Described screw thread processing sword (3) is with spiral and equally spacedly along the downward extension in first bottom surface (6) of chamfering cutting edge (2), constitute second groove (7) that communicates with first groove (5) between the adjacent chamfering cutting edge (2), described centering sword (4) extends and converges each other in the centre to narrow one by one the contracting in center along second bottom surface (8) of described screw thread processing sword (3), constitutes the 3rd groove (9) that communicates with second groove (7) between each sword of feeling relieved (4).
2. poly blade hard metal drill according to claim 1 is characterized in that being provided with the cooling liquid bath (10) that equates and communicate with the quantity of described first groove (5) between the length direction of described handle of a knife (1) upper edge handle of a knife (1).
3. poly blade hard metal drill according to claim 1, it is characterized in that described chamfering cutting edge (2), screw thread processing sword (3), centering sword (4) respectively have three, correspondingly described therewith first, second, third groove (5,7,9) also respectively has three roads.
4. poly blade hard metal drill according to claim 1, the shape of cross section that it is characterized in that described cooling liquid bath (10) are any one in U-lag, rectangular channel, the circular trough.
5. poly blade hard metal drill according to claim 1 is characterized in that described first bottom surface (6) is the inclined plane, and the angle of inclination is 15-80 °.
6. poly blade hard metal drill according to claim 5, the surface configuration that it is characterized in that described inclined plane is trapezoidal.
7. according to claim 1 or 3 described poly blade hard metal drills, it is characterized in that the sword face (12) of the centering sword (4) stated is a triangle.
8. poly blade hard metal drill according to claim 1 is characterized in that constituting on the described handle of a knife (1) at least one milling flat (11).
9. poly blade hard metal drill according to claim 4, the shape of cross section that it is characterized in that described cooling liquid bath (10) is a U-shaped.
10. according to claim 1 or 3 described poly blade hard metal drills, it is characterized in that the shape of described the 3rd groove (9) is in the shape of the letter V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101354323A CN101157150A (en) | 2007-11-09 | 2007-11-09 | Poly blade hard metal drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101354323A CN101157150A (en) | 2007-11-09 | 2007-11-09 | Poly blade hard metal drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101157150A true CN101157150A (en) | 2008-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101354323A Pending CN101157150A (en) | 2007-11-09 | 2007-11-09 | Poly blade hard metal drill |
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| CN (1) | CN101157150A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581352A (en) * | 2012-03-21 | 2012-07-18 | 锑玛(苏州)精密工具有限公司 | Chamfering drill |
| CN103817743A (en) * | 2014-02-18 | 2014-05-28 | 北京工商大学 | Drilling-milling compound tool and drilling and milling method of fibrous composite |
| CN105252089A (en) * | 2015-11-27 | 2016-01-20 | 上海科弦精密工具有限公司 | Precision cutting tool for high-hardness die steel |
| CN106270664A (en) * | 2016-08-30 | 2017-01-04 | 大连理工大学 | A kind of polycrystalline diamond compact bit with the micro-toothing of flip Trim |
| CN107614169A (en) * | 2015-05-28 | 2018-01-19 | 京瓷株式会社 | The manufacture method of drill bit and machining thing |
-
2007
- 2007-11-09 CN CNA2007101354323A patent/CN101157150A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581352A (en) * | 2012-03-21 | 2012-07-18 | 锑玛(苏州)精密工具有限公司 | Chamfering drill |
| CN103817743A (en) * | 2014-02-18 | 2014-05-28 | 北京工商大学 | Drilling-milling compound tool and drilling and milling method of fibrous composite |
| CN107614169A (en) * | 2015-05-28 | 2018-01-19 | 京瓷株式会社 | The manufacture method of drill bit and machining thing |
| CN107614169B (en) * | 2015-05-28 | 2019-07-05 | 京瓷株式会社 | The manufacturing method of drill bit and machined object |
| CN105252089A (en) * | 2015-11-27 | 2016-01-20 | 上海科弦精密工具有限公司 | Precision cutting tool for high-hardness die steel |
| CN106270664A (en) * | 2016-08-30 | 2017-01-04 | 大连理工大学 | A kind of polycrystalline diamond compact bit with the micro-toothing of flip Trim |
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