CN202606937U - Improvement structure of drill bit - Google Patents
Improvement structure of drill bit Download PDFInfo
- Publication number
- CN202606937U CN202606937U CN 201120514080 CN201120514080U CN202606937U CN 202606937 U CN202606937 U CN 202606937U CN 201120514080 CN201120514080 CN 201120514080 CN 201120514080 U CN201120514080 U CN 201120514080U CN 202606937 U CN202606937 U CN 202606937U
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- Prior art keywords
- drill
- drill bit
- lip portion
- linkage section
- shank
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Abstract
The utility model relates to an improvement structure of a drill bit. The drill bit is a miniature or microminiature drill bit formed by welding a drill lip part and a drill handle part. One side of the drill lip part of the drill bit is provided with blades. One side of the blades is connected and provided with a conical surface extending outwardly in a slanting and gradual expanding manner. The end, having the largest diameter, of the conical surface extends and connects with one end of an extending segment which is shaped like a straight rod. A butt joint surface is arranged on the other end of the extending segment. One side of a welding surface of the drill handle part is relatively welded on the butt joint surface. The other side of the welding surface of the drill handle part extends and is connected with one side of a connecting segment. The other side of the connecting segment is provided with an inclined conical surface extending outwardly in a slanting manner and having a gradual expanding diameter. The end, having the largest diameter, of the inclined conical surface extends and connects with a handle bar which is shaped like a straight rod. The diameter of the handle bar ranges from 1.985 mm to 2.0 mm. The improvement structure of the drill bit enables the drill bit to be firmly clamped by a chuck of a processing device and is capable of achieving the objectives of having an excellent concentric circular degree of the drill lip part and the drill handle part, and improving the accuracy of hole drilling.
Description
Technical field
The utility model provides a kind of structure-improved of drill bit; You Zhike improves the drill bit structure of the structural strength of drill bit, concentric circularity and borehole accuracy; Through the extension of drill lip portion and the linkage section of drill shank; Diameter, length standard with preliminary dimension, the effect with good borehole accuracy, quality behind the bore operation is carried out in confession.
Background technology
Move towards gradually gently in outward appearance, the moulding of electronic product, under thin, short, the little epoch trend, also convergent is little to make various electronic product volume, then manufacturing, the procedure for processing of the inner various parts of electronic product; Also relative is more and more meticulousr, and must possess in the various electronic product printed circuit is arranged, for the printed circuit board (PCB) of electronic component settings position; Therefore the volume of this printed circuit board (PCB) also must in the printed circuit board (PCB) processing procedure, can utilize microbit on circuit board, to hole along with the volume-diminished of electronic product usually; In order to the internal layer circuit of connecting circuit plate, yet, existing microbit material; With the material of tungsten carbide as drill bit; With the one-body molded microbit that cuts into of tungsten carbide, though this kind drill bit rigidity and hardness are good, service life is also longer, because of cost too high; And drill bit is to belong to consumptive material, and the financial cost that makes manufacturing is improved.
Other has the dealer to utilize the blade B (seeing also shown in Figure 5) of stainless handle of a knife A and tungsten carbide; Be made as round bar through solder bond or after utilizing the high frequency heating means to shrink; The reprocessing moulding is drill bit C, but two kinds of drill bit C that material is formed, structural strength is not enough; Be difficult for grinding, and handle of a knife A is not good with the concentric circularity of blade B, drilling accuracy, quality are also relatively poor; Then, reality still has many disappearances when using, as:
(1) handle of a knife A and blade B are unlike material, and then two central axis are difficult for accurate contraposition when combining, and handle of a knife A is not good with the concentric circularity of blade B in the welding back, and the aperture precision after also causing holing reduces, quality variation.
(2) handle of a knife A and blade B strong, hardness is different, when then drill bit C grinds in processing procedure, will cause the emery wheel abrasion serious.
Be with, how to solve the material of existing drill bit, problem and the puzzlement that the structure contraposition combines, and cause disappearances such as borehole accuracy reductions, quality variation easily, be the direction that the relevant manufacturer that is engaged in the industry desires most ardently the research improvement and belong to.
Summary of the invention
So; The designer of the utility model is because above-mentioned problem and disappearance collected related data, via assessing in many ways and considering; And to engage in the many years of experience of the industry accumulation; Via constantly studying and revise, the beginning is designed this kind and can adopt the virgin material bar of identical material to weld with the reclaimed materials bar with handle of a knife portion through blade part to make up, and the standard through pre-set dimension; Increase the structural strength of drill lip portion and drill shank, with the structure improved utility model patent birth of the drill bit that improves borehole accuracy, quality.
The main purpose of the utility model is this drill bit with the drill lip portion of virgin material bar, the drill shank of reclaimed materials bar, welds the back, carries out attrition process again and be shaped to small-sized or miniature pattern drill bits such as drill bit, and the drill lip portion of this drill bit has blade; And the blade opposite side is provided with the conical surface, and conical surface maximum diameter end is provided with the extension, and promptly another side is provided with interface in the extension; Can supply the solder side of drill shank to weld relatively, and extend linkage section toward opposite side, then be provided with scalene cone in the linkage section opposite side by solder side; In scalene cone maximum diameter end extension stem bar; The diameter of handle bar can supply the firm clamping of chuck of machining machine and tool between 1.985mm～2.0mm, utilizes the extension of drill lip portion and the linkage section of drill shank again; Rely on the pre-set dimension moulding, reach the purpose that concentric circularity is good, the drilling precision is high of drill lip portion and drill shank.
The secondary objective of the utility model is the extension of this drill lip portion, stretched out by the maximum diameter end of the conical surface, and the length of extending be between 0.1mm～5mm to cooperate the linkage section of drill shank, to have the effect that constitutes good concentric circularity; This drill lip portion is the material bar (reclaiming used wolfram steel (WC) material) that virgin material bar (new wolfram steel (WC) material) is made, drill shank then adopts recycling; Weld, combine with drill shank with drill lip portion; Can reduce the material cost of drill bit, not influence structural strength, and the structural strength of drill bit also promotes.
A purpose again of the utility model is the linkage section of this drill shank; One side has the miner diameter end that solder side, opposite side are connected with scalene cone; And the length of linkage section is between 0.1mm～2mm, and preferable length can be 0.5mm, can cooperate the extension of drill lip portion; Be easy to grind, reduce the abrasion of emery wheel, improve the concentric circularity of drill lip portion and drill shank; And the external diameter of linkage section is the external diameter less than the handle bar, and the external diameter of linkage section is to reduce between 0.002mm～0.2mm less than handle bar outside dimension, and preferable size reduction then is 0.05mm.
For reaching above-mentioned purpose, the utility model provides a kind of structure-improved of drill bit, the drill shank that it comprises drill lip portion and is connected in drill lip portion one side, wherein:
This drill lip portion one side is provided with the helical form blade that supplies to carry out cut; And be provided with the conical surface in oblique outward extension flaring bar footpath by blade one side; And the extension that conical surface maximum diameter end extends direct rod shape again, then the length of extension is between 0.1mm～5mm, and promptly one side is provided with interface in the extension;
This drill shank utilizes a face down bonding to be connected to the interface of drill lip portion; Be provided with the solder side that is connected relatively with interface; And extend linkage section toward a side by solder side, and linkage section one side is provided with the scalene cone in oblique outward extension flaring bar footpath, is positioned at the linkage section length of solder side to scalene cone; Between 0.1mm～2mm; Extend the handle bar that direct rod shape Gong to grip by scalene cone maximum diameter end again, and the diameter of handle bar is between 1.985mm～2.0mm, other this linkage section external diameter is less than the 0.002mm～0.2mm of the external diameter of handle bar.
The structure-improved of said drill bit, wherein, this drill lip portion is the wolfram steel material, the drill shank that drill lip portion one side connects is the wolfram steel material of recycling, is shaped to miniature bur or microbit.
The structure-improved of said drill bit, wherein, this drill lip portion is provided with single cutting blade or two symmetrical expression cutting blades, and supplies hilted broadsword sword or two blades with the spiral drill lip portion that is surrounded on.
The structure-improved of said drill bit, wherein, the linkage section external diameter of this drill shank is less than the 0.05mm of handle bar external diameter.
The structure-improved of said drill bit, wherein, this drill shank is 0.5mm by the linkage section length at the path place of solder side to scalene cone.
The structure-improved of the drill bit of above-mentioned the utility model has following advantage when reality is used:
(1) utilizes the drill lip portion of virgin material bar, the drill shank of reclaimed materials bar, after solder bond, be shaped to miniature bur or microbit through attrition process; And the linkage section of extension that can be through drill lip portion, drill shank, handle bar etc.; And the diameter of handle bar through the standard of preliminary dimension, can supply drill bit in use between 1.985mm～2.0mm; Be difficult for taking place beat or swag phenomenon, to promote borehole accuracy and quality.
(2) drill lip portion, drill shank with same material (wolfram steel) welding, combine, structural strength is good, be easy to grind moulding, can reduce the abrasion degree of the emery wheel that grinds facility.
Description of drawings
Fig. 1 is the stereo appearance figure before the moulding of the utility model drill bit;
Fig. 2 is the side view before the moulding of the utility model drill bit;
Fig. 3 is the stereo appearance figure after the moulding of the utility model drill bit;
Fig. 4 is the side view after the moulding of the utility model drill bit;
Fig. 5 is the side view of existing drill bit.
Description of reference numerals: 1, drill shank; 11, blade; 111, chip area; 12, the conical surface; 13, extension; 14, interface; 2, drill shank; 21, linkage section; 22, solder side; 23, scalene cone; 24, handle bar; A, handle of a knife; B, blade; C, drill bit.
The specific embodiment
For reaching above-mentioned purpose and effect, technological means that the utility model adopted and structure thereof are drawn now and are explained in detail that with regard to the preferred embodiment of the utility model its characteristic and function are following, in order to understanding fully.
See also Fig. 1, Fig. 2, Fig. 3, shown in Figure 4; Be the stereo appearance figure before the moulding of the utility model drill bit, the side view before the drill bit moulding, the stereo appearance figure after the drill bit moulding, the side view after the drill bit moulding; Find out by knowing shown in the figure; The structure of the utility model drill bit comprises drill lip portion 1 and drill shank 2, wherein:
The wolfram steel material (WC) that this drill lip portion 1 is the virgin material bar, and drill shank 2 is the wolfram steel material (WC) of the reclaimed materials bar of recycling, and supply the diameter of preceding drill lip portion 1 diameter of processing grinding greater than drill shank 2; With through after the welding processing, grind and be shaped to small-sized or pattern such as microbit again; Rely on the virgin material bar wolfram steel material (new wolfram steel (WC) material) of drill lip portion 1, the recovery wolfram steel material (with wolfram steel (WC) material that used recycling) of drill shank 2, can reduce the material cost of drill bit, not influence the structural strength of drill bit again.
Through welding processing, grind the drill bit of processing procedure institute moulding, by the handle bar 24 1 side solders side 22 of drill shank 2, for interface 14 welding positions of drill lip portion 1; Grind the linkage section 21 of the drill shank 2 of moulding reduced outside diameter, the extension 13 of drill lip portion 1, and, form scalene cone 23 in the linkage section 21 and handle bar 24 link positions of drill shank 2; Scalene cone 23 then is outwards to be the flaring shape by linkage section 21; Extend to maximum end place and be connected, weld, combine with the extension 13 of drill lip portion 1, be shaped to two symmetrical expression blades 11 by extension 13 toward opposite sides again as for linkage section 21 opposite sides with handle bar 24; For two symmetrical expression blades 11 in the shape of a spiral shape be surrounded in the drill lip portion 1; And between extension 13 and blade 11, be provided with and be the conical surface 12 that outside flaring shape extends, then the smallest end of the conical surface 12 maximum end footpath that directly is connected in blade 11, the conical surface 12 promptly is connected in extension 13; The drill bit that promptly is shaped to the drill lip portion 1 that comprises, drill shank 2 (can be miniature bur or microbit etc.; Also but equal proportion is expanded as the application of large-size drill), and by the handle bar 24 of drill shank 2 blade 11 towards drill lip portion 1, machine-shaping is to be the contraction of gradually-reducing shape to extend.
The blade 11 of above-mentioned drill lip portion 1; Grinding be shaped to two symmetrical expression chip removal ditches 111 and with blade 11 spiral surroundings in drill lip portion 1; And connect the conical surface 12 and extension 13 in blade 11 opposite sides; And the length of extension 13 is between the maximum diameter end and interface 14 of the conical surface 12, and its length can be between 0.1mm～5mm; And the linkage section 21 of the drill shank 2 that is connected with extension 13, its length is positioned at the miner diameter end of solder side 11 to scalene cone 23, and length can be between 0.1mm～2mm; Preferred embodiment length can be 0.5mm; Length with through linkage section 21 cooperates extension 13 length, and forms the width dimensions of length dimension greater than the abrasion wheel grinding face, and drill lip portion 1 is identical material (being all wolfram steel (WC)) with drill shank 2; Be easy to synchronous attrition process; Can provide the emery wheel that is easy to grind facility to carry out the processing procedure of attrition process, and can reduce the loss of emery wheel when attrition process, prolong the service life of emery wheel; In addition, the interface 14 that utilizes drill lip portion 1 with 22 welding of the solder side of drill shank 2, combine after, grind moulding extension 13, linkage section 21 again; Welding slag in the time of can be with weld job is removed, and prevents that welding slag attaches on the drill lip of existence portion 1 or the drill shank 2, and supplies extension 13 length greater than linkage section 21 length; Form interface 14 and solder side 22 near handle bar 24; Increasing the weld strength of drill shank 2 and drill lip portion 1, and can improve the concentric circularity of drill lip portion 1 and drill shank 2, and increase the structural strength after welding; Can supply the blade 11 (small-sized or microbit must be quite high-revolving rotary processing) when carrying out Drilling Operations of drill lip portion 1; Keep the rotation of stable high speed, be difficult for beat or rock, reduce the probability of drill lip portion 1 fracture, and can promote borehole accuracy, aperture quality.
And linkage section 21 outside dimensions of drill shank 2; Reduction, less than the outside dimension of handle bar 24; Linkage section 21 external diameters reduce approximately, between the 0.002mm～0.2mm less than handle bar 24 external diameters, preferable size reduction then is 0.05mm, reduces with the outside dimension through linkage section 21; Only be undersized reducing; The unlikely structural strength that influences drill shank 2, and the situation generation that can avoid linkage section 21 and drill lip portion 1 when high rotating speed rotates, to produce beat or rock, avoid drill lip portion 1 to rupture are to promote the borehole accuracy of drill bit.
Moreover handle bar 24 diameter dimensions of drill shank 2 are greater than the diameter dimension of linkage section 21, and then the diameter dimension of handle bar 24 can be between 1.985mm～2.0mm; Form bigger clamping external diameter; When then drill bit utilizes handle bar 24 to supply the chuck clamping of machining machine and tools, can be through the handle bar 24 of the firm clamping drill shank 2 of chuck, the clamping adaptation is also preferable, be difficult for loosening or come off; Can carry out high speed when rotating at drill bit; Reduce the shaking degree of drill lip portion 1, make drill lip portion 1 be difficult for beat or rock, and can improve the quality in borehole accuracy, aperture.
Be with, the above is merely the preferred embodiment of the utility model, non-so the limitation the utility model claim; The drill bit structure of the utility model utilizes the drill lip portion 1 of virgin material bar, the drill shank 2 of reclaimed materials bar to weld, be shaped to small-sized or microbit, and has predetermined length dimension through the extension 13 of drill lip portion 1; Linkage section 21, the handle bar 24 of drill shank 2 all are provided with predetermined size, for the drill bit of the moulding handle bar 24 through drill shank 2, firmly are held on the chuck of machining machine and tool; Drill bit is rotated at a high speed in adding man-hour; And the blade 11 that reaches drill lip portion 1 is difficult for beat or rocks, and improving the purpose of borehole accuracy and quality, drill lip portion 1 that can be through drill bit, drill shank 2 are in each size design partly; After drill lip portion 1 welds with drill shank 2; When grinding the processing procedure of moulding, can reduce the abrasion of the emery wheel of grinding facility, the structural strength that improves drill bit, the drill lip portion 1 difficult phenomenon of rupture that takes place, improve small-sized or disappearances such as the easy beat of microbit processing, fracture; Contained by the utility model so can reach structure, the device of aforementioned effect such as; Simple and easy modification of this kind and equivalent structure change, and all should in like manner be contained in the claim of the utility model, close and give Chen Ming.
The structure-improved of the drill bit of above-mentioned the utility model can have following advantage when reality is used, as:
(1) utilizes the drill lip portion 1 of virgin material bar, the drill shank 2 of reclaimed materials bar, after solder bond, be shaped to miniature bur or microbit through attrition process; And the linkage section 21 of extension 13 that can be through drill lip portion 1, drill shank 2, handle bar 24 etc.; And the diameter of handle bar 24 through the standard of preliminary dimension, can supply drill bit in use between 1.985mm～2.0mm; Be difficult for taking place beat or swag phenomenon, to promote borehole accuracy and quality.
(2) drill lip portion 1, drill shank 2 with same material (wolfram steel (WC)) welding, combine, structural strength is good, be easy to grind moulding, can reduce the abrasion degree of the emery wheel that grinds facility.
So the utility model is primarily aimed at the structure Design of drill bit, utilizes the drill lip portion of virgin material bar and the drill shank of reclaimed materials bar; Through after the solder bond, grinds again and be shaped to small-sized or microbit etc., and by means of extension, the linkage section of drill shank and the pre-set dimension standard of handle bar of drill lip portion; Improve the structural strength of drill bit, and can reach the beat that reduces drill bit, rock, and the borehole accuracy that promotes drill bit is main key protection point; The virgin material pole stock matter of the drill lip portion through drill bit and the reclaimed materials pole stock matter of drill shank are welded, are combined, and are shaped to miniature bur or microbit etc. through attrition process again; And can reduce abrasion to the emery wheel that grinds facility, the structural strength of drill bit is improved, hole and process advantage more smoothly, and can prolong the service life of drill bit; Yet; The above is merely the preferred embodiment of the utility model, and is non-so promptly limit to the claim of the utility model, so the simple and easy modification and the equivalent structure that use the utility model specification and graphic content to do such as change; All should in like manner be contained in the claim of the utility model, close and give Chen Ming.
In sum, the structure-improved of the above-mentioned drill bit of the utility model is when using, for reaching its effect and purpose really; So the utility model really is the excellent utility model of a practicality, for meeting the application important document of novel patent, file an application in the whence in accordance with the law; Expect that examining committee grants accurate this case early, ensureing applicant's arduous utility model, if an ancient unit of weight office examine committee have any check doubtful; The indication of please writing to us without sparing, settled the doing one's utmost of applicant cooperates, and the true feeling moral is just.
Claims (5)
1. the structure-improved of a drill bit is characterized in that, comprise drill lip portion and be connected in the drill shank of drill lip portion one side, wherein:
This drill lip portion one side is provided with the helical form blade that supplies to carry out cut; And be provided with the conical surface in oblique outward extension flaring bar footpath by blade one side; And the extension that conical surface maximum diameter end extends direct rod shape again, then the length of extension is between 0.1mm～5mm, and promptly one side is provided with interface in the extension;
This drill shank utilizes a face down bonding to be connected to the interface of drill lip portion; Be provided with the solder side that is connected relatively with interface; And extend linkage section toward a side by solder side, and linkage section one side is provided with the scalene cone in oblique outward extension flaring bar footpath, is positioned at the linkage section length of solder side to scalene cone; Between 0.1mm～2mm; Extend the handle bar that direct rod shape Gong to grip by scalene cone maximum diameter end again, and the diameter of handle bar is between 1.985mm～2.0mm, other this linkage section external diameter is less than the 0.002mm～0.2mm of the external diameter of handle bar.
2. the structure-improved of drill bit according to claim 1 is characterized in that this drill lip portion is the wolfram steel material, and the drill shank that drill lip portion one side connects is the wolfram steel material of recycling, is shaped to miniature bur or microbit.
3. the structure-improved of drill bit according to claim 1 is characterized in that this drill lip portion is provided with single cutting blade or two symmetrical expression cutting blades, and supplies hilted broadsword sword or two blades with the spiral drill lip portion that is surrounded on.
4. the structure-improved of drill bit according to claim 1 is characterized in that the linkage section external diameter of this drill shank is less than the 0.05mm of handle bar external diameter.
5. like the structure-improved of the said drill bit of claim 4, it is characterized in that this drill shank is 0.5mm by the linkage section length at the path place of solder side to scalene cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120514080 CN202606937U (en) | 2011-12-12 | 2011-12-12 | Improvement structure of drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120514080 CN202606937U (en) | 2011-12-12 | 2011-12-12 | Improvement structure of drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202606937U true CN202606937U (en) | 2012-12-19 |
Family
ID=47340669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120514080 Expired - Fee Related CN202606937U (en) | 2011-12-12 | 2011-12-12 | Improvement structure of drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202606937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723728A (en) * | 2017-04-14 | 2018-11-02 | 玖鑫精密股份有限公司 | Fusing type opposed knife regeneration method and its regeneration pole structure fabrication system |
-
2011
- 2011-12-12 CN CN 201120514080 patent/CN202606937U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723728A (en) * | 2017-04-14 | 2018-11-02 | 玖鑫精密股份有限公司 | Fusing type opposed knife regeneration method and its regeneration pole structure fabrication system |
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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: 20121219 Termination date: 20181212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |