CN103157797A - Tool bit blank and synthetic process thereof and synthetic mold thereof and tool bit production method - Google Patents
Tool bit blank and synthetic process thereof and synthetic mold thereof and tool bit production method Download PDFInfo
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- CN103157797A CN103157797A CN2013100874345A CN201310087434A CN103157797A CN 103157797 A CN103157797 A CN 103157797A CN 2013100874345 A CN2013100874345 A CN 2013100874345A CN 201310087434 A CN201310087434 A CN 201310087434A CN 103157797 A CN103157797 A CN 103157797A
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- cutter head
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Abstract
The invention discloses a tool bit blank and synthetic process thereof and a synthetic mold thereof and a tool bit production method. The tool bit blank comprises a sleeve body made of a hard alloy material and a column body made of a glomerocryst superhard material. The column body is located in the sleeve body and sintered and fixed on an inner circumferential face of the sleeve body. The tool bit blank is formed by a set of processes which are filling (a green body is obtained)-pressure maintaining sintering (the tool bit blank is obtained). The green body is composed of the sleeve body and glomerocryst superhard material particles or powder filled in the sleeve body. In the process that the green body is sintered to the tool bit blank, pressure maintaining sealing is just conducted to opening positions at two ends of the sleeve body, so that the effect of maintaining pressure on the glomerocryst superhard material particles or powder in the sleeve body can be achieved. In the process of pressure maintaining sintering, compared with the prior art, dependence on a mold container shape in the sintering process is reduced, production process of the tool bit blank and a tool bit is simplified, production effect is facilitated and production cost is reduced.
Description
Technical field
The present invention relates to the cutting-tool engineering field, relate in particular to a kind of cutter head blank of cutter, also relate to simultaneously the synthesis technique of this cutter head blank, the synthetic mould of this synthesis technique special use and the cutter head production method that adopts above-mentioned cutter head blank.
Background technology
At present, commercially available cutter head has monoblock type polycrystalline cubic boron nitride cutter head and first two form of combined type polycrystalline cubic boron nitride cutter, although wherein the preparation of monoblock type polycrystalline cubic boron nitride cutter head is got up simply, adopt Polycrystalline Cubic Boron Nitride because cutter head is whole, therefore manufacturing cost is higher.And combined type polycrystalline cubic boron nitride cutter head only contains a small amount of Polycrystalline Cubic Boron Nitride, remainder is relatively cheap carbide alloy, so compound polycrystalline cubic boron nitride is keeping integral polycrystalline cubic boron nitride high-strength, in the time of the good advantage of wearability, also saved cost, so combined type polycrystalline cubic boron nitride cutter head has become a kind of main cutter head structure, be the described a kind of sintered body insert for cutting of Chinese invention patent and the manufacture method thereof of CN 1137959A as publication number, this cutter head synthesizes by following steps:
Step 4, by the super-pressure generating means, described green compact are carried out pressurize, and described green compact are carried out sintering, be combined in so that described upper and lower layer is sintered to the sintered body layer that the glomerocryst superhard material powder on described carbide alloy side forms, described upper and lower layer is combined with hard alloy blocks and is formed the composite sinter (being the cutter head blank) of sandwich-like;
but when adopting this synthesis technique to synthesize compound tool bit, in the described sintering process of step 4, the super-pressure generating means carries out pressurize by mould container to green compact, to guarantee compactness and the bed thickness of sintered body layer, die cavity precision to mould container has higher requirements in building-up process thereby make, and need control to be filled in the thickness of the glomerocryst superhard material powder in mould container, the larger problem of material interpolation difficulty in the cost of mould therefor container height and synthesis technique when this is synthetic with regard to having caused, so that complicated by this synthesis technique, the compound tool bit processing cost that processes is higher.
Summary of the invention
The purpose of this invention is to provide a kind of cutter head blank simple in structure, easy to process, the simple cutter head blank of a kind of technique synthesis technique, a kind of cutter head blank synthetic mould simple in structure and a kind of cutter head production method convenient for production also are provided simultaneously.
In order to realize above purpose, the technical scheme of cutter head blank of the present invention is as follows:
A kind of cutter head blank comprises the body of being made by Hardmetal materials and the cylinder of being made by the glomerocryst superhard material, and described cylinder is in body and is sintered to fix on the inner peripheral surface of body.
Described body is the square casing of square tube shape, and described cylinder is the complementary square body that is inserted in the body endoporus that coincide.
The technical scheme of cutter head blank synthesis technique of the present invention is as follows:
A kind of cutter head blank synthesis technique, comprise the following steps: step 1, after body one end opening that Hardmetal materials is made is sealed up, filling glomerocryst superhard material particle or dust in the body, after glomerocryst superhard particles or dust are filled to desired height to the body, the shutoff body other end is the part of filling glomerocryst superhard material particle or dust not, the green compact that consist of with glomerocryst superhard material particle or the dust that forms by body and Qi Nei;
Described body is the square casing of square tube shape.
The technical scheme of cutter head blank synthetic mould of the present invention is as follows:
A kind of cutter head blank synthetic mould comprises the conductive sleeve placed be used to the green compact that are set in column outward and is set in the muff of conductive sleeve periphery, described conductive sleeve have be used to be fitted in the green compact periphery, with the inner peripheral surface of green compact conductive communication.
Described conductive sleeve is surrounded by carbon paper, and described muff is the stone cover of being made by pyrophyllite material.
The two ends of described conductive sleeve are equiped be used to the conducting strip on the green compact end face that is fitted in column, and are being set with on the length direction of conductive sleeve for the cranse that described conducting strip is pressed on the green compact end face.
Be folded with the titanium sheet between described cranse and conducting strip.
A kind of cutter head production method, comprise the following steps: step 1, after body one end opening that Hardmetal materials is made is sealed up, filling glomerocryst superhard material particle or dust in the body, after glomerocryst superhard particles or dust are filled to desired height to the body, the shutoff body other end is the part of filling glomerocryst superhard material particle or dust not, the green compact that consist of with glomerocryst superhard material particle or the dust that forms by body and Qi Nei;
Step 4 cuts into cutting blocks and contiguous block by the cutter head of faying face sintering with described cutter head blank.
Described body is the square casing of square tube shape.The technical scheme of cutter head production method of the present invention is as follows:
cutter head of the present invention processes through filling (obtaining green compact)-pressurize sintering (obtaining the cutter head blank)-this cover operation of cutting (obtaining cutter head), wherein green compact are that glomerocryst superhard material particle or dust by filling in body and body consists of, and in green sintering is become the process of cutter head blank, only need to carry out the pressurize shutoff in the both ends open position of body, the effect that just can play pressurize to the glomerocryst superhard material particle in body or dust, make in the pressurize sintering process, the sintered body shape that glomerocryst superhard material particle or dust will sinter into is that the interior hole shape by body determines, compared with prior art, reduced in the green sintering process dependence to the mould container shape, simplified the production technology of cutter head blank and cutter head, accelerated production effect, reduced production cost.
Description of drawings
Fig. 1 is green compact and the annexation schematic diagram of synthetic mould in sintering process in the embodiment of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is the structural representation of cutter head blank in the embodiment of the present invention;
Fig. 4 is the top view of Fig. 3.
The specific embodiment
The embodiment of cutter head blank of the present invention: as shown in Figures 1 to 4, this cutter head blank 6 comprises the body 1 of being made by Hardmetal materials and the cylinder 5 of being made by Polycrystalline Cubic Boron Nitride, body 1 is the square casing of square tube shape, described cylinder 5 is the complementary square body that is inserted in the body endoporus that coincide, and being sintered to fix on the inner peripheral surface of body 1 of cylinder 5.
The cutter head blank 6 of the present embodiment synthesizes this cutter head blank by following steps during fabrication:
based on above synthesis step, conductive heater by 4 pairs of green compact 3 of synthetic mould, insulation and pressure maintaining effect, polycrystalline cubic boron nitride dust 2 in body 1 is sintered into the cylinder 5 that is combined on cover 1 body inner peripheral surface, to consist of required cutter head blank 6 by described cylinder 5 and body 1, and in the use procedure of synthetic mould 4, the required radially pressurize of polycrystalline cubic boron nitride dust 2 is to act on by gathering of 1 pair of polycrystalline cubic boron nitride dust 2 of body realizing, namely the shape of polycrystalline cubic boron nitride dust 2 in green compact 3 is that the effect of gathering by 1 pair of polycrystalline cubic boron nitride dust 2 of body forms, thereby reduced in green compact 3 sintering processes the dependence to synthetic mould 4, simplify the synthesis technique of cutter head blank 6, enhance productivity.
The cutter head blank 6 of the present embodiment cuts from the dotted line position tool setting capillus base 6 shown in Fig. 3 and Fig. 4 in use, to obtain cutting blocks and contiguous block by the cutter head of faying face sintering.Can obtain 12 block-shaped identical cutter heads after cutting, namely can cut by a cutter head blank and obtain 12 cutter heads, thereby improve the utilization rate of cutter head blank, increase the resulting cutter head quantity of single process.
In the above-described embodiments, cutting part on cutter head blank end face is cross-shaped, so that two moulding tangent planes intersect at same intersect stupefied, and should intersect stupefied be the center line of described cylinder, in other embodiments, and a described crossing stupefied side that also can be offset to described cylinder center line, and but the quantity of face also can be more than two in moulding, each moulding tangent plane can intersect at and samely intersect stupefiedly, also can intersect in twos, but no matter which kind of situation each intersect stupefied all should being in described cylinder.
In the above-described embodiments, cutting part on capillus base outer peripheral face is in its trisection posistion place, by two horizontally extending fractionation tangent planes, the cutter head blank is divided into three, to reduce the height of cutter head blank, in other embodiments, the cutter head blank can not cut by described fractionation tangent plane yet, and perhaps by one or split tangent planes more than two and cut, concrete condition determines according to the height of the required cutter head of reality.
In the above-described embodiments, by synthetic mould, described green compact are carried out the pressurize sintering, in other embodiments, also can carry out pressurize to described green compact by modes such as compressor or weight compressions, and in the situation that by described means, green compact are carried out pressurize, green compact be carried out sinter molding processing.
In the above-described embodiments, body is the square casing of square tube shape, and in other embodiments, body can be also circle shell-like or many ribs shell-like.
In the above-described embodiments, the dust to be sintered that adopts in described green compact adopts Polycrystalline Cubic Boron Nitride, opens at other embodiment, and Polycrystalline Cubic Boron Nitride also can replace with other glomerocryst superhard materials such as polycrystalline diamond or corundum.
In the above-described embodiments, arrange at the cutting position that outer peripheral face and the cutting position on end face of cutter head blank is a kind of rule, to obtain the cutter head of regular shape, in other embodiments, also can arrange according to other rules or irregular cutting position described cutter head blank is cut, with cutter head or the erose cutter head that obtains other regular shapes.
In the above-described embodiments, conductive sleeve is surrounded by carbon paper, muff is the stone cover of being made by pyrophyllite material, in other embodiments, conductive sleeve also can be made by other conductive materials, muff also can be made by other insulation materials, and this belongs to the technological means that those skilled in the art habitually practise, and therefore repeats no more.
In the above-described embodiments, conductive sleeve is the square casing of square tube shape, so that the cutter head blank is square solid cylinder, in other embodiments, described conductive sleeve can be also the prism sleeve pipe of other prism-shaped such as garden cylindraceous sleeve pipe, hexa-prism or the sleeve pipe of other different in nature tubulars, and corresponding cutter head blank also has the outer peripheral face corresponding with described conductive sleeve.
The embodiment of cutter head blank synthetic mould of the present invention: as depicted in figs. 1 and 2, in the cutter head blank synthetic mould structure of the present embodiment and above-described embodiment, the structure of synthetic mould is identical, therefore repeats no more.
The embodiment of cutter head blank synthesis technique of the present invention: as shown in Figures 1 to 4, in the cutter head blank synthesis technique of the present embodiment and above-described embodiment, the synthesis technique of cutter head blank is identical, namely shown in synthesis technique consisted of by following steps:
The embodiment of cutter head production method of the present invention: as shown in Figures 1 to 4, the cutter head production method of the present embodiment is after the synthesis technique in conjunction with above-mentioned cutter head blank, and tool setting capillus base cuts to obtain required cutter head, and concrete steps are as follows:
Step 4 cuts into cutting blocks and contiguous block by the cutter head of faying face sintering with described cutter head blank.
Claims (10)
1. a cutter head blank, is characterized in that, comprises the body of being made by Hardmetal materials and the cylinder of being made by the glomerocryst superhard material, and described cylinder is in body and is sintered to fix on the inner peripheral surface of body.
2. cutter head blank according to claim 1, is characterized in that, described body is the square casing of square tube shape, and described cylinder is the complementary square body that is inserted in the body endoporus that coincide.
3. cutter head blank synthesis technique, it is characterized in that, comprise the following steps: step 1, after body one end opening that Hardmetal materials is made is sealed up, filling glomerocryst superhard material particle or dust in the body, after glomerocryst superhard particles or dust were filled to desired height to the body, the shutoff body other end is the part of filling glomerocryst superhard material particle or dust not, the green compact that consist of with glomerocryst superhard material particle or the dust that forms by body and Qi Nei;
Step 2 is set with conductive sleeve on the outside of green compact;
Step 3; glomerocryst superhard material particle at the two ends of body in to it or dust apply packing pressure in opposite directions; and switch on to conductive sleeve; sinter cylinder on the inwall that is combined in body into to described glomerocryst superhard material particle or dust, to obtain by the be connected cutter head blank of the column that forms of described cylinder and body sintering.
4. cutter head blank synthesis technique according to claim 3, is characterized in that, described body is the square casing of square tube shape.
5. cutter head blank synthetic mould, it is characterized in that, comprise the conductive sleeve placed be used to the green compact that are set in column outward and be set in the muff of conductive sleeve periphery, described conductive sleeve have be used to be fitted in the green compact periphery, with the inner peripheral surface of green compact conductive communication.
6. cutter head blank synthetic mould according to claim 5, is characterized in that, described conductive sleeve is surrounded by carbon paper, and described muff is the stone cover of being made by pyrophyllite material.
7. according to claim 5 or 6 described cutter head blank synthetic moulds, it is characterized in that, the two ends of described conductive sleeve are equiped be used to the conducting strip on the green compact end face that is fitted in column, and are being set with on the length direction of conductive sleeve for the cranse that described conducting strip is pressed on the green compact end face.
8. cutter head blank synthetic mould according to claim 7, is characterized in that, is folded with the titanium sheet between described cranse and conducting strip.
9. cutter head production method, it is characterized in that, comprise the following steps: step 1, after body one end opening that Hardmetal materials is made is sealed up, filling glomerocryst superhard material particle or dust in the body, after glomerocryst superhard particles or dust were filled to desired height to the body, the shutoff body other end is the part of filling glomerocryst superhard material particle or dust not, the green compact that consist of with glomerocryst superhard material particle or the dust that forms by body and Qi Nei;
Step 2 is set with conductive sleeve on the outside of green compact;
Step 3, glomerocryst superhard material particle at the two ends of body in to it or dust apply packing pressure in opposite directions, and switch on to conductive sleeve, sinter cylinder on the inwall that is combined in body into to described glomerocryst superhard material particle or dust, to obtain by the be connected cutter head blank of the column that forms of described cylinder and body sintering;
Step 4 cuts into cutting blocks and contiguous block by the cutter head of faying face sintering with described cutter head blank.
10. cutter head production method according to claim 9, is characterized in that, described body is the square casing of square tube shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310087434.5A CN103157797B (en) | 2013-03-19 | 2013-03-19 | Cutter head blank and synthesis technique thereof and synthetic mould thereof and cutter head production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310087434.5A CN103157797B (en) | 2013-03-19 | 2013-03-19 | Cutter head blank and synthesis technique thereof and synthetic mould thereof and cutter head production method |
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| Publication Number | Publication Date |
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| CN103157797A true CN103157797A (en) | 2013-06-19 |
| CN103157797B CN103157797B (en) | 2016-05-04 |
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| CN201310087434.5A Active CN103157797B (en) | 2013-03-19 | 2013-03-19 | Cutter head blank and synthesis technique thereof and synthetic mould thereof and cutter head production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127429A (en) * | 2015-08-24 | 2015-12-09 | 珠海市钜鑫科技开发有限公司 | Boron nitride super-hard material and preparation method thereof |
Citations (6)
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| US4373593A (en) * | 1979-03-16 | 1983-02-15 | Christensen, Inc. | Drill bit |
| JPS5935607A (en) * | 1982-08-18 | 1984-02-27 | Sumitomo Electric Ind Ltd | Production of bonded sintered hard alloy member |
| US6258139B1 (en) * | 1999-12-20 | 2001-07-10 | U S Synthetic Corporation | Polycrystalline diamond cutter with an integral alternative material core |
| CN102019426A (en) * | 2010-12-31 | 2011-04-20 | 柳州市大荣非金属材料有限公司 | Preparation method of diamond compact |
| CN102274972A (en) * | 2010-06-13 | 2011-12-14 | 博深工具股份有限公司 | Manufacturing method of annular ultrathin diamond drill bit |
| CN203209692U (en) * | 2013-03-19 | 2013-09-25 | 河南富耐克超硬材料股份有限公司 | Tool bit blank and synthesis mould thereof |
-
2013
- 2013-03-19 CN CN201310087434.5A patent/CN103157797B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4373593A (en) * | 1979-03-16 | 1983-02-15 | Christensen, Inc. | Drill bit |
| JPS5935607A (en) * | 1982-08-18 | 1984-02-27 | Sumitomo Electric Ind Ltd | Production of bonded sintered hard alloy member |
| US6258139B1 (en) * | 1999-12-20 | 2001-07-10 | U S Synthetic Corporation | Polycrystalline diamond cutter with an integral alternative material core |
| CN102274972A (en) * | 2010-06-13 | 2011-12-14 | 博深工具股份有限公司 | Manufacturing method of annular ultrathin diamond drill bit |
| CN102019426A (en) * | 2010-12-31 | 2011-04-20 | 柳州市大荣非金属材料有限公司 | Preparation method of diamond compact |
| CN203209692U (en) * | 2013-03-19 | 2013-09-25 | 河南富耐克超硬材料股份有限公司 | Tool bit blank and synthesis mould thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127429A (en) * | 2015-08-24 | 2015-12-09 | 珠海市钜鑫科技开发有限公司 | Boron nitride super-hard material and preparation method thereof |
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| CN103157797B (en) | 2016-05-04 |
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Address after: 450001 Zhengzhou high tech Industrial Development Zone, Henan, Holly Street, No. 16 Applicant after: Rich Nike superhard material limited company Address before: 450001 Zhengzhou high tech Industrial Development Zone, Henan, Holly Street, No. 16 Applicant before: Henan Funik Ultrahard Material Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: HE NAN FUNIK ULTRAHARD MATERIAL CO., LTD. TO: FUNIK ULTRAHARD MATERIALS CO., LTD. |
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