CN101234468B - Method for manufacturing drilling tool and structure thereof - Google Patents
Method for manufacturing drilling tool and structure thereof Download PDFInfo
- Publication number
- CN101234468B CN101234468B CN200710002761A CN200710002761A CN101234468B CN 101234468 B CN101234468 B CN 101234468B CN 200710002761 A CN200710002761 A CN 200710002761A CN 200710002761 A CN200710002761 A CN 200710002761A CN 101234468 B CN101234468 B CN 101234468B
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- drilling tool
- base body
- drill bit
- bit head
- cylindrical portion
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Abstract
The invention provides a manufacturing method and a structure of a drilling tool, which includes the following steps: forging a main base leading the main base to have a chimeric department formed on a shaft body, a cylinder department and the upper end surface of a cylinder department, manufacturing a drill bit forehead in a manner of powder metallurgy to be cylinder-shaped, forming a plurality of chimeric components on the lower end corresponding to the chimeric department on the upper end surface of the main base, and forming drilling tools with the advantages of abrasion resistance and break resistance after the joint of the drill bit forehead and the main base.
Description
Technical field
The present invention relates to a kind of manufacture method and structure thereof of drilling tool, be specifically related to a kind ofly can cut the Drilling hard material fast and have abrasion performance and be difficult for the drilling tool of fracture characteristics.
Background technology
General traditional drilling tool as shown in Figure 1, this drilling tool 1 at one end is provided with cutter tip 11, and the scrap behind its Drilling is taken out of via the spiral goove 12 that designs on its outside wall surface.Yet the cutter tip 11 of the prior art drilling tool 1 is that the rotation with the radial cutter edge 111 in center realizes cutting purpose; But, the aperture of plan Drilling is big more, this drilling tool 1 cutter edge 111 far away more apart from its center needs the many more scopes of Drilling, otherwise, cutter edge 111 item Drilling more few scopes near more apart from its center, thereby the time cutter edge 111 resistance inequalities that often cause Drilling, add and man-hour the situation of shake cutter takes place easily, thereby cause drilling tool 1 fracture; In addition, this drilling tool 1 does not have the design of chip breaking yet, when Drilling, be easy to generate the situation of continuous bits, often block in spiral goove 12 because of being difficult for chip removal, especially when the Drilling deep hole, the operator need often recall cutter to remove Integrated Chip, has therefore caused the time waste in the Drilling operation, the related cost of processing that increased.
Another kind of prior art drilling tool, " rail bores with spherical cavity " patent as the novel patent announcement of TaiWan, China M260345 number, this patent content is roughly: this rail is drilled with shaft with spherical cavity, its shaft has cylindrical portion, on this cylindrical portion lower end annular end face uniformly-spaced to be provided with a plurality of bites, each bite forms the sword face respectively, and on this cylindrical portion perisporium of each bite, upwards forming the multiple tracks dregs guiding groove, the angle of each sword face and this shaft direction of axis line is made as between 2～4 degree.The prior art patent has been improved the mode of above-mentioned cutter edge Drilling, and come Drilling in the mode that the perisporium of cylindrical portion is provided with a plurality of bites, not only the scope of each bite institute Drilling all identical and can not produce the shake cutter outside, and when the aperture of Drilling and the identical size of above-mentioned cutter edge mode, the required resistance that bears becomes littler, and scrap becomes still less; Just it is in the consideration of cost, because bite must be to make than stiff materials (wolfram steel), because it costs an arm and a leg, in order to save cost, thereby the mode of establishing the wolfram steel bite on only can the perisporium with cylindrical portion is made, other parts are then made with general white steel, therefore in manufacture process, must be in addition the wolfram steel bite be connect on the perisporium that mode is installed on cylindrical portion one by one with silver soldering, and note and the angle angle problem of each sword face and shaft direction of axis line cause fabrication schedule loaded down with trivial details, and bite is when welding, also easily produce difference of height and higher fraction defective situation occurs, all cause cost waste virtually; In addition, because in the operation of high speed Drilling, the weld of each bite and cylindrical portion perisporium, also regular meeting influences the stability of its weld and comes off because temperature is too high, can't continue to use again; Moreover this bite does not improve the defective that above-mentioned prior art can't chip breaking yet.
From above-mentioned prior art patent design, can find out the problem that haves much room for improvement many that remains.Please refer to Fig. 2, there is shown the prior art drilling tool of another different designs, it is provided with shaft 21, shaft 21 is provided with cylindrical portion 22, on cylindrical portion 22 upper end annular end face uniformly-spaced to be provided with a plurality of bites 23, each bite 23 is formed with sword face 231 and filings-breaking surface 232 respectively, and upwards is formed with multiple tracks spirality dregs guiding groove 24 at the perisporium in abutting connection with this cylindrical portion 22 of each bite 23.The prior art is at the defective of above-mentioned prior art patent, design each sword face 231 with same material (high-speed steel), cylindrical portion 22 and shaft 21 integrated drilling tools, the situation that does not only have the shake cutter produces, and on its each bite 23 respectively design sword face 231 and filings-breaking surface 232 arranged, sword face 231 is in the process of Drilling, scrap can be taken out of and chip removal via dregs guiding groove 24, because filings-breaking surface 232 is positioned at after the sword face 231, therefore scrap just can be by the chip breaking with filings-breaking surface 232 contact impacts, bits more can not occur continuously and blocks situation in dregs guiding groove 24.Owing to adopt integrated mode to make, do not make situation about being difficult for thereby can reduce some costs though do not exist, because of its material must increase a lot of material costs on the contrary fully with the high-speed steel manufacturing.In addition, because the hard and frangible characteristic of high speed steel, when the material that all states in Asia are produced comparatively impure treat that Drilling steel material carries out Drilling the time, cause drilling tool to be everlasting owing to its each several part hardness is uneven and cause the situation of fracture in the Drilling operation, and allow the user very perplex; Therefore considering the problems such as effect, durability and cost of drilling tool, is present association area problem demanding prompt solution.
Summary of the invention
Therefore, main purpose of the present invention is to develop in order to address the above problem a kind of new method of the drilling tool that reduces cost and make easily.
According to above-mentioned purpose, this manufacture method is: at first, in the forging mode, welding metal material (as: chrome-molybdenum steel) is made Base body, make this Base body have the cylindrical portion of shaft, shaft top, at a plurality of fitting portions that form on the cylindrical portion upper surface and on the cylindrical portion perisporium, form a plurality of spiral-shaped and dregs guiding groove that the degree of depth is dark; Then, in the powder metallurgy mode, the metal material (as: wolfram steel) of abrasion performance is made drill bit head, this drill bit head is shaped to cylindric, its lower surface is formed with a plurality of chimeric elements corresponding to the fitting portion of Base body cylindrical portion upper end, and this drill bit head upper surface then is formed with a plurality of bites; Be embedded in the fitting portion of this Base body again by the chimeric element of this drill bit head; Afterwards,, Base body and drill bit head are welded together, form the finished product of drilling tool at last with welding manner at the joint of Base body and drill bit head.
Another object of the present invention is to provide a kind of easy cutting Drilling hard material (as steel plate etc.) and has abrasion performance, is easy to chip removal and is difficult for the drilling tool of fracture characteristic.
According to above-mentioned purpose, this structure comprises: Base body and drill bit head, wherein this Base body has shaft, above this shaft, be provided with cylindrical portion, be formed with a plurality of fitting portions on this cylindrical portion upper surface, also be formed with a plurality of spiral-shaped and dregs guiding grooves that the degree of depth is dark on this cylindrical portion perisporium, and this drill bit head is cylindric, its lower surface is formed with a plurality of chimeric elements corresponding to the fitting portion of Base body cylindrical portion upper end, the upper surface then is formed with the bite of a plurality of equidistant arrangements, therefore be embedded in the fitting portion of Base body by the chimeric element of drill bit head, form drilling tool.
Manufacture method by drilling tool of the present invention, make drill bit head and Base body in one-body molded mode, and utilize laser weld that drill bit head and Base body are welded together, therefore easy to manufacture, Base body is with low cost, and drill bit head has hardness height, abrasion performance, the dregs guiding groove degree of depth is dark and the advantage of easy chip removal and chip breaking, therefore drill bit head is with after Base body combines, specific characteristic that is had and function are far from prior art products and can compare, so it has more progressive than prior art.
Description of drawings
Fig. 1 is a stereo appearance figure of prior art drilling tool.
Fig. 2 is another stereo appearance figure of prior art drilling tool.
Fig. 3 is the block flow diagram of the manufacture method of drilling tool of the present invention.
Fig. 4 is the three-dimensional exploded view of drilling tool of the present invention.
Fig. 5 is the solid combination schematic diagram of drilling tool of the present invention.
Fig. 6 is the schematic perspective view of drilling tool finished product of the present invention.
The specific embodiment
About the preferred embodiments of the present invention and technology contents, accompanying drawings is as follows.
The present invention relates to a kind of manufacture method and structure thereof of drilling tool, please refer to shown in Figure 3, wherein show manufacture method of the present invention, and combination simultaneously is with reference to Fig. 4, Fig. 5, and Fig. 6, wherein show the structure that the method according to this invention is made, it can cut the wide edge I shaped steel in Drilling such as reinforcing bar structure building and fast than the hard material of steel plate etc., this method comprises: (301) at first, earlier in the forging mode, with welding metal material (as: chrome-molybdenum steel, Bai Gang etc.) the one-body molded Base body 4 of making makes this Base body 4 have shaft 41, the cylindrical portion 42 of shaft 41 tops, a plurality of fitting portions 43 that cylindrical portion 42 upper surfaces form, and a plurality of spiralitys that form on cylindrical portion 42 perisporiums and the dark dregs guiding groove 44 of the degree of depth; (302) in the powder metallurgy mode, with the one-body molded drill bit head 5 of making of the metal material (as: wolfram steel) of abrasion performance, make this drill bit head 5 be shaped to cylindric 51, its lower surface is formed with a plurality of chimeric elements 52 corresponding to the fitting portion 43 of Base body 4 cylindrical portion 42 upper ends, and the upper surface then is formed with a plurality of bites 53 and chip breaking cutter 54; (303) the chimeric element 52 by drill bit head 5 is embedded on the fitting portion 43 of Base body 4; (304) at the joint 61 of Base body 4, Base body 4 and drill bit head 5 are welded together, form one with welding manner (as: laser weld) with drill bit head 5; (305) form drilling tool 62 finished products.Drilling tool 62 finished products of so making, not only easy to manufacture and have abrasion performance, dregs guiding groove 44 degree of depth are dark and the characteristic of easy chip removal and chip breaking.
Please refer to Fig. 4 again, Fig. 5, shown in Figure 6, wherein show a kind of structure of drilling tool, it mainly is drilling tool 62 structures of making in conjunction with above-mentioned manufacture method, this structure has Base body 4 and drill bit head 5, wherein, because this Base body 4 is with the bigger metal material (as: chrome-molybdenum steel of plasticity, Bai Gang etc.) make, therefore it has not easily broken and cheap advantage, this Base body 4 has shaft 41, above this shaft 41, be provided with cylindrical portion 42, these cylindrical portion 42 upper surfaces are formed with a plurality of fitting portions 43, also are formed with a plurality of spiral-shaped and dregs guiding grooves 44 that the degree of depth is dark on these cylindrical portion 42 perisporiums; And this drill bit head 5 is cylindric 51, its lower surface is formed with a plurality of chimeric elements 52, the upper surface then is formed with the bite 53 and the chip breaking cutter 54 of a plurality of equidistant arrangements, make each bite 53 and chip breaking cutter 54 have blade at an angle respectively, thus can hole simultaneously, chip removal and chip breaking.
Assembling by above-mentioned member, can be embedded in by the chimeric element 52 of drill bit head 5 on the fitting portion 43 of Base body 4, again at the joint 61 of Base body 4 with drill bit head 5, with welding manner (as: laser weld) Base body 4 and drill bit head 5 are welded together, and form drilling tool 62.In addition, this drilling tool 62 is because of being hollow shape, and can integrated characteristics in conjunction with wolfram steel tool abrasion performance and chrome-molybdenum steel, during boring generally than the drill chisel speed of drilling tool shown in Figure 11 approximately about fast ten times, and can realize easy to manufacture, have the abrasion performance and a purpose of chip removal feature easily.
Please refer to shown in Figure 4ly again, these fitting portions 43 can be groove, and these chimeric elements 52 can be tenon, therefore are embedded in groove by tenon, and interlocking is together mutually to make Base body 4 and drill bit head 5.
This partial design also can be designed to these fitting portions 43 and be tenon, and these chimeric elements 52 are groove, therefore are embedded in groove by tenon, and Base body 4 and drill bit head 5 are rabbeted together mutually.
In sum, the manufacture method of drilling tool 62 of the present invention and structure thereof, be in one-body molded mode, make drill bit head 5 and Base body 4, and utilize laser weld that drill bit head 5 and Base body 4 are welded together, therefore easy to manufacture, Base body 4 is with low cost, and drill bit head 5 has the hardness height, abrasion performance, the advantage of the dregs guiding groove degree of depth dark and easy chip removal and chip breaking, therefore drill bit head 5 and Base body 4 are after both combine, specific characteristic that is had and function are far from prior art products and can compare, so it has more progressive than prior art really.
The above only is the preferred embodiments of the present invention, can not be used to limit scope of the invention process, that is, equivalent variations and correction that all are done in the present patent application claim all should belong to the scope that patent of the present invention contains.
Claims (8)
1. the manufacture method of a drilling tool, described method are to make to it is characterized in that drilling tool (62) abrasion performance, easy to manufacture and be easy to the manufacture method of chip removal and chip breaking, comprising:
A. in the forging mode with the one-body molded Base body (4) of making of metal material, make described Base body (4) have the cylindrical portion (42) of shaft (41), shaft (41) top, a plurality of fitting portions (43) and a plurality of spiralitys on cylindrical portion (42) perisporium and the dark dregs guiding groove (44) of the degree of depth of cylindrical portion (42) upper surface;
B. in the powder metallurgy mode, with the one-body molded drill bit head (5) of making of metal material, make described drill bit head (5) be shaped to cylindric, its lower surface is formed with a plurality of chimeric elements (52) corresponding to a plurality of fitting portions (43) of cylindrical portion (42) upper end of Base body (4), and the upper surface then is formed with a plurality of bites (53) and chip breaking cutter (54);
C. the chimeric element (52) with drill bit head (5) is embedded on the fitting portion (43) of Base body (4);
D. at the joint of Base body (4), Base body (4) and drill bit head (5) are welded together, form the finished product of drilling tool (62) with welding manner with drill bit head (5).
2. the manufacture method of drilling tool according to claim 1 is characterized in that, described Base body (4) is made by the chrome-molybdenum steel metal material.
3. the manufacture method of drilling tool according to claim 1 is characterized in that, described drill bit head (5) is made by the wolfram steel metal material.
4. the manufacture method of drilling tool according to claim 1 is characterized in that, described welding manner is a laser weld.
5. the structure of a drilling tool is characterized in that:
Described drilling tool (62) has Base body (4) and drill bit head (5), wherein said Base body (4) has shaft (41), be provided with cylindrical portion (42) in described shaft (41) top, described cylindrical portion (42) upper surface is formed with a plurality of fitting portions (43), also is formed with the dark dregs guiding groove (44) of a plurality of spiralitys and the degree of depth on described cylindrical portion (42) perisporium; And described drill bit head (5) is cylindric (51), be formed with a plurality of chimeric elements (52) in its lower surface, the upper surface has then formed a plurality of bites (53) and chip breaking cutter (54), therefore be embedded on the fitting portion (43) of Base body (4) by chimeric element (52), and formation has abrasion performance, easy to manufacture, drilling tool (62) structure that is easy to chip removal and chip breaking characteristic described drill bit head (5).
6. the structure of drilling tool according to claim 5 is characterized in that, described chimeric element (52) is a tenon, and described fitting portion (43) is a groove.
7. the structure of drilling tool according to claim 5 is characterized in that, described chimeric element (52) is a groove, and described fitting portion (43) is a tenon.
8. the structure of drilling tool according to claim 5 is characterized in that, described bite (53) and chip breaking cutter (54) have blade at an angle respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710002761A CN101234468B (en) | 2007-01-30 | 2007-01-30 | Method for manufacturing drilling tool and structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710002761A CN101234468B (en) | 2007-01-30 | 2007-01-30 | Method for manufacturing drilling tool and structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101234468A CN101234468A (en) | 2008-08-06 |
| CN101234468B true CN101234468B (en) | 2010-05-19 |
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ID=39918504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710002761A Expired - Fee Related CN101234468B (en) | 2007-01-30 | 2007-01-30 | Method for manufacturing drilling tool and structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101234468B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108127122A (en) * | 2017-12-04 | 2018-06-08 | 西安交通大学 | A kind of double material sinter soging parts of composite construction enhancing and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098362A (en) * | 1976-11-30 | 1978-07-04 | General Electric Company | Rotary drill bit and method for making same |
| US4767245A (en) * | 1984-11-01 | 1988-08-30 | Nitto Kohki Co., Ltd. | Annular hole cutter |
| US5069584A (en) * | 1989-01-20 | 1991-12-03 | Hilti Aktiengesellschaft | Hollow drilling tool |
| CN2700044Y (en) * | 2003-05-19 | 2005-05-18 | 任京建 | Thin wall diamond drill bit with profiled tooth |
-
2007
- 2007-01-30 CN CN200710002761A patent/CN101234468B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098362A (en) * | 1976-11-30 | 1978-07-04 | General Electric Company | Rotary drill bit and method for making same |
| US4767245A (en) * | 1984-11-01 | 1988-08-30 | Nitto Kohki Co., Ltd. | Annular hole cutter |
| US5069584A (en) * | 1989-01-20 | 1991-12-03 | Hilti Aktiengesellschaft | Hollow drilling tool |
| CN2700044Y (en) * | 2003-05-19 | 2005-05-18 | 任京建 | Thin wall diamond drill bit with profiled tooth |
Non-Patent Citations (3)
| Title |
|---|
| JP昭57-201114A 1982.12.09 |
| JP昭59-107815A 1984.06.22 |
| JP昭61-90814A 1986.05.09 |
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| Publication number | Publication date |
|---|---|
| CN101234468A (en) | 2008-08-06 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20100519 Termination date: 20170130 |