CN103249906A - Cemented carbide tool and method for fixing super-hard tip - Google Patents
Cemented carbide tool and method for fixing super-hard tip Download PDFInfo
- Publication number
- CN103249906A CN103249906A CN2010800619971A CN201080061997A CN103249906A CN 103249906 A CN103249906 A CN 103249906A CN 2010800619971 A CN2010800619971 A CN 2010800619971A CN 201080061997 A CN201080061997 A CN 201080061997A CN 103249906 A CN103249906 A CN 103249906A
- Authority
- CN
- China
- Prior art keywords
- contact
- hard contact
- hard
- pressure ring
- apertures
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims description 29
- 238000003825 pressing Methods 0.000 claims description 6
- 230000014509 gene expression Effects 0.000 description 8
- 238000003801 milling Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003818 cinder Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Percussive Tools And Related Accessories (AREA)
- Connection Of Plates (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
Provided are a tool a practical method for fixing a super-hard tip of the tool, wherein the super-hard tip,such as a cemented carbide tip, is fixed to a steel base by the tool, and is suitable for use primarily for purposes such as opening a taphole. Said tool is the cemented carbide tool which is characterized in that the super-hard tip is inserted into an internally threaded tip hole formed in the steel base, and that a hold-down ring which is provided with a male thread around the external periphery thereof and is capable of being threadably engaged with said tip hole, is threadably installed in the tip hole in such a way as to be fitted over the super-hard tip, resulting in the super-hard tip being pressed and fixed. Desirablely, the external peripheral surface of the super-hard tip be formed as a conical inclined surface wherein the diameter in the upper portion (tip portion) is smaller and the diameter in the lower portion (base portion) is larger, and that the internal peripheral surface of the hold-down ring be formed as a trumpet-shaped inclined surface which closely mates with the conical inclined surface of the super-hard tip.
Description
Technical field
The present invention relates to the fixing means of the hard contact in the instrument (hereinafter referred to as " sintered carbide tools ") of contact (hereinafter referred to as " hard contact ") that a kind of use is equipped with the superhard alloy of cutting drill, percussion tool and so on or pottery etc.
Background technology
Cut drill or in the lapicide employed Surface Finishing with in the matrix of steel, implanting hard contact (generally being superhard contact) under a lot of situations such as instrument.As the mounting method of above-mentioned hard contact, the most general method is to wear the contact apertures chimeric with the hard contact at matrix, and with the hard contact and this contact apertures is chimeric and method or the shrunk fit method of carrying out soldering.
But, be under the situation of high temperature at the heating target thing, the instrument self that uses above-mentioned method for brazing or shrunk fit method that the hard contact is fixed can be heated to high temperature, therefore, has hard contact impaired or such problem that comes off under the effect of thermal stress.For example, the hole milling that goes out of ore furnace goes out to mill to seal again and move to when finishing next fusion operation at the cast iron of fusion, but, under the situation of the planarization of the peristome when carrying out this opening that goes out hole milling and sealing with drill bit (for the leading section that makes the mud gun (mud gun) that seals usefulness need carry out planarization with going out tight contact of hole milling opening circumference), because the furnace wall is in high temperature, therefore, if use the drill bit after the hard contact carried out the drill bit after the soldering or carry out shrunk fit, can there be superhard contact such problem that at once comes off.
In the digging instrument, as the fixing means of contact difficult drop-off, known have patent documentation 1 disclosed such method.This method is to form concaveconvex shape in the side of the base end part of contact, and the method for welding in the mode that covers its side.
The prior art document
Patent documentation
Patent documentation 1: the Japan Patent spy opens the 2003-214080 communique
Summary of the invention
Invent technical problem to be solved
In the method that above-mentioned patent documentation 1 is put down in writing, owing to be the direct method of welding of mode that covers the outer peripheral face of contact, therefore, can think that contact can also firmly be kept, still, under the situation of the very crisp superhard contact of material, under the influence of thermal shock etc., crackle may occur, therefore, have problems in actual use.Except said method, though also considered certain methods,, also cannot determine at present the fixing means of the actual use of superhard contact etc. that can high temperature resistant use.Therefore, technical problem to be solved by this invention is to provide a kind of and also the hard contact of superhard contact etc. firmly can be kept when at high temperature using, the fixing means that is not easy to occur coming off etc.
The technical scheme that the technical solution problem adopts
For solving the problems of the technologies described above, the invention provides fixing means as described below.Namely, the feature of the sintered carbide tools of technical scheme 1 record is, the hard contact is embedded in the contact apertures of the band negative thread on the matrix of being located at steel, and the square thread joint is pressed pressure ring from it, so that the hard contact is carried out by press fit, wherein, above-mentioned have the pin thread that the negative thread with above-mentioned contact apertures screws togather by pressure ring.In addition, the feature of the fixing means of the hard contact that technical scheme 2 is put down in writing is, proper site at the matrix of steel is provided with the diameter contact apertures bigger than the external diameter of hard contact, interior perimembranous in this contact apertures forms negative thread, the diameter that will have leading section is little, the hard contact of the inclination outer peripheral face that the diameter of base portion side increases gradually embeds above-mentioned contact apertures, and above-mentioned hard contact is being inserted under the state pass to by the through hole of pressure ring, this negative thread by pressure ring and above-mentioned contact apertures is screwed togather, so that the hard contact is pressed, by this hard contact is fixed on the screwed hole inside of matrix, wherein, above-mentioned by pressure ring outside perimembranous be formed with the pin thread that the negative thread with above-mentioned contact apertures screws togather, and at interior perimembranous is formed with and the periphery of above-mentioned hard contact closely contacts through hole.In the said fixing method, as technical scheme 3 is put down in writing, comparatively it is desirable to, with the mode of the above-mentioned inner surface of pressing pressure ring closely to contact with the outer peripheral face of hard contact, form the inclined plane that downside is wide, upside is narrow in advance.In addition, the feature of the fixing means of the hard contact that technical scheme 4 is put down in writing is, proper site at the matrix of steel is provided with the diameter contact apertures bigger than the external diameter of hard contact, interior perimembranous in this contact apertures forms negative thread, the hard contact that will be formed with the flange that stretches out towards the periphery direction in the bottom embeds above-mentioned contact apertures, and above-mentioned hard contact is being inserted under the state pass to by the through hole of pressure ring, this negative thread by pressure ring and above-mentioned contact apertures is screwed togather, so that the flange of hard contact is pressed, by this hard contact is fixed on the screwed hole inside of matrix, wherein, above-mentioned by pressure ring outside perimembranous be formed with the pin thread that the negative thread with above-mentioned contact apertures screws togather.
The invention effect
Sintered carbide tools of the present invention is owing to use and threadedly by pressure ring hard contact mechanical compression to be fixed on the inside of contact apertures, therefore can use under such condition of high temperature such as the milling outlet opening of ore furnace.In addition, fixing means according to hard contact of the present invention, under the hard contact state chimeric with being located at the contact apertures of matrix, utilization is pressed from the top of hard contact by pressure ring, and should screw togather by negative thread of the interior perimembranous of pressure ring and contact apertures and by affixed, therefore, the hard contact firmly can be kept.In the said fixing method, the hard contact can be heated to high temperature because fix, therefore, on the hard contact, can not crack etc.In addition, owing to do not use scolder, also different with the shrunk fit method of utilizing thermal expansion, therefore, do not worry that at high temperature contact comes off even if in use expose yet.
Description of drawings
Fig. 1 is the sectional view of expression fixing means of the present invention.
Fig. 2 is the sectional view of the step of expression said fixing method.
Fig. 3 is vertical view (a) and the lateral view (b) of matrix.
Fig. 4 is the sectional view of representing about two kinds of contact apertures with matrix are divided into.
Fig. 5 is the longitudinal section of matrix.
Fig. 6 goes out vertical view (a) and the lateral view (b) that the hole milling opening is used drill bit.
Fig. 7 is expression and the sectional view of above-mentioned different embodiment.
Fig. 8 is that embodiment is in the sectional view under the affixed state.
Fig. 9 is the figure of the expression reference example different with embodiment.
Figure 10 is that reference example is in the sectional view under the affixed state.
The specific embodiment
Below embodiments of the present invention are specifically described.
Embodiment 1
Fig. 1 illustration sintered carbide tools of the present invention, chimericly in the contact apertures 2 of matrix 1 head of being located at steel hard contact 3(is arranged in the case for superhard contact) base portion.The bottom surface of contact 3 closely contacts with the bottom surface 7 of contact apertures 2.
As shown in Figure 2, hard contact 3 is made of head 3a, main part 3b and base portion 3c, the roughly shell shape that the diameter that head 3a forms leading section is little, the diameter of main part side is big.Main part 3b is identical cylindric of diameter, the diameter that base portion 3c forms the main part side is little, the diameter of base portion side gradually increased cross-section be cone shape inclined plane.
The internal diameter of the contact apertures 2 of matrix 1 is bigger than the external diameter of the largest portion of the base portion of hard contact 3, keeps suitable gap 4 between contact apertures internal face and contact outer peripheral face.Interior perimembranous in contact apertures 2 is formed with negative thread 2a.
Fig. 3 to Fig. 5 is the figure of expression matrix 1, this matrix 1 is by the steel manufacturing, be provided with a plurality of contact apertures 2 and cinder hole (flushing hole) 8 at the upper surface (front end face) with four smear metal fins (cutting wing) 1a, and on the side, also be provided with cinder hole 9.Symbol 20 among the figure is screwed holes of cutting on the vent stem be used to being installed in.Fig. 6 illustrates the outward appearance that expression is solidly connected to hard contact 3 on the drill bit of the completion status behind the above-mentioned matrix 1.
In illustrated example, fixedly there is the upper surface by pressure ring 5 of hard contact 3 outstanding slightly from the surface of matrix 1, but also can be designed to be in essentially identical with the surface of matrix 1.Because the employed drill bit of opening that goes out hole milling is after using once, the heat of high temperature when the hard contact will be subjected to opening and damaging, therefore, as a rule, drill bit is disposable.Therefore, as the fixing means of hard contact, so long as can contact is firmly fixing with the degree of anti-use, not problem at aspects such as outward appearances.
Then, Fig. 7, Fig. 8 are expressions and the figure of above-mentioned different slightly embodiment, in this embodiment, are formed with flange 31 at the base portion of hard contact 3.The internal diameter of the external diameter of this flange 31 and contact apertures 2 is basic identical, and it highly is several millimeters, has screwed togather thereon by pressure ring 5, closely contacts with the upper surface of above-mentioned flange 31 by the soffit of pressure ring 5.By like this, press owing to use by 5 pairs of flanges 31 with hard contact 3 one of pressure ring, therefore, can make fixing of hard contact 3 more reliable.
Then, Fig. 9, Figure 10 are expressions and the figure of above-mentioned different reference example, in this embodiment, directly are provided with pin thread 14 at the base portion peripheral part of hard contact 13.This hard contact 13 and the contact apertures 2 that is carved with negative thread are directly screwed togather.That is, hard contact 13 and matrix 1 directly are threadedly engaged with.Though parts and base material can be threadedly engaged with usually, because the hard contact is generally all very crisp, therefore, can't utilize screw thread affixed.But, because the employed instrument of opening that goes out hole milling is just lost after in most cases being to use once, therefore, can adopt the consolidation method of this screw-type.Though also can form pin thread from one's body at the hard contact as mentioned above, form the threaded portion owing to generally be difficult on this hard contact, therefore, as described in above-mentioned embodiment, use and undertaken by being pressed in the actual use comparatively desirable by pressure ring 5.
As discussed above, according to the fixing means of hard contact of the present invention, hard contacts such as superhard contact mechanically firmly can be fixed on the matrix of steel, when the object at high temperature used, contact is difficult drop-off also.In addition, because fixedly the time, contact self can not be subjected to thermal shock, therefore, even if the superhard contact of fragility material also can be fixed reliably.
Industrial utilizability
In the fixing means of the hard contact in sintered carbide tools of the present invention, can with a wet finger the hard contact firmly be fixed on the matrix of steel, thereby can be as the contact fixing means of employed sintered carbide tools in being subjected to the purposes of heat of high temperature.
(symbol description)
1 matrix
2 contact apertures
3 hard contacts
5 press pressure ring
13 hard contacts
31 flanges
Claims (4)
1. sintered carbide tools, it is characterized in that, the hard contact is embedded in the contact apertures of the band negative thread on the matrix of being located at steel, and the square thread joint is pressed pressure ring from it, so that described hard contact is carried out by press fit, wherein, described by pressure ring outside perimembranous have the pin thread that screws togather with described negative thread.
2. the fixing means of a hard contact, it is characterized in that, proper site at the matrix of steel is provided with the diameter contact apertures bigger than the external diameter of hard contact, interior perimembranous in this contact apertures forms negative thread, the diameter that will have leading section is little, the hard contact of the inclination outer peripheral face that the diameter of base portion side increases gradually embeds described contact apertures, and described hard contact is being inserted under the state pass to by the through hole of pressure ring, this negative thread by pressure ring and described contact apertures is screwed togather, so that the hard contact is pressed, by this hard contact is fixed on the screwed hole inside of matrix, wherein, described by pressure ring outside perimembranous be formed with the pin thread that the negative thread with described contact apertures screws togather, and at interior perimembranous is formed with and the periphery of described hard contact closely contacts through hole.
3. the fixing means of hard contact as claimed in claim 2 is characterized in that, the mode of the described inner surface of pressing pressure ring closely to contact with the outer peripheral face of hard contact forms the inclined plane that downside is wide, upside is narrow.
4. the fixing means of a hard contact, it is characterized in that, proper site at the matrix of steel is provided with the diameter contact apertures bigger than the external diameter of hard contact, interior perimembranous in this contact apertures forms negative thread, the hard contact that will be formed with the flange that stretches out towards the periphery direction in the bottom embeds described contact apertures, and described hard contact is being inserted under the state pass to by the through hole of pressure ring, this negative thread by pressure ring and described contact apertures is screwed togather, so that the flange of hard contact is pressed, by this hard contact is fixed on the screwed hole inside of matrix, wherein, described by pressure ring outside perimembranous be formed with the pin thread that the negative thread with described contact apertures screws togather.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-010996 | 2010-01-21 | ||
| JP2010010996A JP5668909B2 (en) | 2010-01-21 | 2010-01-21 | Carbide tool and hard tip fixing method |
| PCT/JP2010/059571 WO2011089739A1 (en) | 2010-01-21 | 2010-05-28 | Cemented carbide tool and method of fixing super-hard tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103249906A true CN103249906A (en) | 2013-08-14 |
| CN103249906B CN103249906B (en) | 2015-08-12 |
Family
ID=44306558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080061997.1A Active CN103249906B (en) | 2010-01-21 | 2010-05-28 | The fixing means of sintered carbide tools and hard tip be |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP5668909B2 (en) |
| KR (1) | KR20130018224A (en) |
| CN (1) | CN103249906B (en) |
| DE (1) | DE112010005170T5 (en) |
| RU (1) | RU2012130947A (en) |
| TW (1) | TWI541428B (en) |
| WO (1) | WO2011089739A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201223530D0 (en) | 2012-12-31 | 2013-02-13 | Element Six Abrasives Sa | A cutter element for rock removal applications |
| JP6238432B2 (en) * | 2013-07-22 | 2017-11-29 | 株式会社奥村組 | Cutter board of shield machine and shield machine equipped with the same |
| WO2017115097A1 (en) * | 2015-12-29 | 2017-07-06 | Arcelormittal | Drill bit, tap hole drilling machine equipped with said drill bit, and process for making said drill bit |
| KR102415285B1 (en) | 2020-06-09 | 2022-07-01 | (주)달성 | High Frequency Induction Heating Device for Bit Carbide Tip Brazing |
| KR102503100B1 (en) | 2021-05-13 | 2023-02-24 | (주)달성 | Carbide Tip Welding Method Of Bit Body |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60169385U (en) * | 1984-04-19 | 1985-11-09 | 三菱重工業株式会社 | Button bit for drilling |
| US20040149495A1 (en) * | 2003-01-30 | 2004-08-05 | Varel International, Inc. | Low-contact area cutting element |
| JP2006289549A (en) * | 2005-04-11 | 2006-10-26 | Hiroshi Takezaki | Method for fixing cemented carbide tip in cemented carbide tool |
| CN201343994Y (en) * | 2009-01-20 | 2009-11-11 | 中国科学院武汉岩土力学研究所 | Drill bit device for mohole in high tailing dam |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11131962A (en) * | 1997-10-31 | 1999-05-18 | Hashimoto Chuzo Kogyo Kk | Manufacture of bit for drilling |
| JP3772746B2 (en) | 2002-01-21 | 2006-05-10 | 三菱マテリアル株式会社 | Drilling tools |
-
2010
- 2010-01-21 JP JP2010010996A patent/JP5668909B2/en active Active
- 2010-05-28 CN CN201080061997.1A patent/CN103249906B/en active Active
- 2010-05-28 KR KR1020127019026A patent/KR20130018224A/en active Search and Examination
- 2010-05-28 DE DE112010005170T patent/DE112010005170T5/en active Pending
- 2010-05-28 WO PCT/JP2010/059571 patent/WO2011089739A1/en active Application Filing
- 2010-05-28 RU RU2012130947/03A patent/RU2012130947A/en not_active Application Discontinuation
- 2010-12-15 TW TW099143957A patent/TWI541428B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60169385U (en) * | 1984-04-19 | 1985-11-09 | 三菱重工業株式会社 | Button bit for drilling |
| US20040149495A1 (en) * | 2003-01-30 | 2004-08-05 | Varel International, Inc. | Low-contact area cutting element |
| JP2006289549A (en) * | 2005-04-11 | 2006-10-26 | Hiroshi Takezaki | Method for fixing cemented carbide tip in cemented carbide tool |
| CN201343994Y (en) * | 2009-01-20 | 2009-11-11 | 中国科学院武汉岩土力学研究所 | Drill bit device for mohole in high tailing dam |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201139834A (en) | 2011-11-16 |
| DE112010005170T5 (en) | 2012-10-31 |
| TWI541428B (en) | 2016-07-11 |
| RU2012130947A (en) | 2014-02-27 |
| KR20130018224A (en) | 2013-02-20 |
| CN103249906B (en) | 2015-08-12 |
| JP2011149192A (en) | 2011-08-04 |
| JP5668909B2 (en) | 2015-02-12 |
| WO2011089739A1 (en) | 2011-07-28 |
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