EP0547012A2 - Zusammengesetzter Einsatz für Schneidwerkzeuge - Google Patents

Zusammengesetzter Einsatz für Schneidwerkzeuge Download PDF

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Publication number
EP0547012A2
EP0547012A2 EP92830664A EP92830664A EP0547012A2 EP 0547012 A2 EP0547012 A2 EP 0547012A2 EP 92830664 A EP92830664 A EP 92830664A EP 92830664 A EP92830664 A EP 92830664A EP 0547012 A2 EP0547012 A2 EP 0547012A2
Authority
EP
European Patent Office
Prior art keywords
insert
cutting elements
composite insert
packet
regards
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.)
Withdrawn
Application number
EP92830664A
Other languages
English (en)
French (fr)
Other versions
EP0547012A3 (en
Inventor
Manuela Belletti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UNICOAT Srl
Original Assignee
UNICOAT Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by UNICOAT Srl filed Critical UNICOAT Srl
Publication of EP0547012A2 publication Critical patent/EP0547012A2/de
Publication of EP0547012A3 publication Critical patent/EP0547012A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/5676—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a cutting face with different segments, e.g. mosaic-type inserts
    • 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
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • 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
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits

Definitions

  • the invention concerns the cut of fragile materials such as : glass, stone, concrete, etc., during technological operation as milling, turning, grinding, etc.
  • the insert made of hard material and having homogeneous characteristics , for instance , small carbide plates have the following disadvantage :their available sharp edges wear out and for that reason the total insert cannot be used again. The only way is resharpening or trueing the cutting parts, but this is expensive and this is not always possible to do.
  • the inserts are made of granules of material as hard as a diamond, boron carbide or silicium powder made of those granules is mixed with agglutinants materials and it is fixed on them as a general rule through a sintering process.
  • the hard particles scratch or cut the material that has to be manufactured.
  • the shavings produced during the workmanship are usually removed, from the work-place, using a cooling liquid.
  • the stratification is an attempt to create an insert having non-isotropical characteristics along the tool movement axes and, at the same time to improve the characteristics for its use.
  • the problem is that the insert is very goaded along the several axes.
  • a tool insert used to remove shaving should have the following ideal qualities:
  • USSR-1464349 is described a hard alloy insert and on its external surfaces is applied a hard covering made of carbide or titanium nitre, rhenium, molybdenum, hafnium or chrome, having thickness of 4 - 8 microns applied using the ionic evaporation method in absolute vacuum.
  • This covering improves the insert resistance against the wear Nevertheless, because the coverings are applied on all the working sides of the insert, it cuts by the surface and not by the protruding edge,and for this reason , the cutting features of the thin coat are not used at the best.
  • the thin coat acts only as a separator or as a barrier between the material to tooling and the body of the insert. It's to underline that, an insert covered only by a very hard film, on its own, is not very efficient in manufacturing the stones and above all,in manufacturing the fragile materials.
  • This invention is directed to improve the tooling :by the shaving removal and the abrasion of glass, stone materials , etc., and at the same time to increase the production per hour; and lif of the tools, and to cut down of their cost.
  • the active and passive elements are joined together inside a "packet", in a way that the edge of the hard surfaces of the covering can act as a working active element.
  • the active and passive elements can be in several forms such as lamellae, wires, small pipes, disks, rolled up tape, granules.
  • the insert they make, can work in two different directions: perpendicular and inclined to the surface to manufacture.
  • the passive elements wear quickly and they uncover in a progressive way the edge of the hard and sharp coat covering the active elements.
  • the superficial discontinuity between the active and the passive coats allows to get together and get rid of the shavings away from the cutting area.
  • the extra-hard coat can be discontinuous in some of its applications onto the active elements, to increase the cutting efficiency.
  • the elements can be made of the most suited material; it can be metallic or not metallic or baked clay, and the covering or the hard film can be obtained, depending on the different application and considering the cost, using the most suitable methods-(galvanic, ceramic , ionic absolute vacuum vaporization).
  • the covering can have a single coat or can have multi-coats and assure three features: the increase of the transversal resistance; the starting of a self-sharpening process and the possibility of a low temperature fixing.
  • the thickness or the diameter of the passive and active elements is fixed by the requested finishing degree.
  • the material forming the active and passive elements is chosen on the ground of the features of the material to be-machined .
  • a passive element having tender material is more suitable to work the marble.
  • Figure 1 a shows the active lamellae 1 covered by a thin and extra-hard film 2 interposed with passive lamellae 3.
  • Figure 1 b shows, for instance, the same insert, after short time of work on the upper surface.
  • the active element 1 has had a light consumption on the upper edge band then it can support the extra-hard coat 2.
  • the passive element 3 because of its less hardness is much more wear and tear, and it has had greater consumption , so then the upper edge of the extra-hard coat 2 is getting away towards the insert work direction. Just so, its consumption creates a vacuum caused by the shaving and the passing of the cooling liquid.
  • Figure 2 shows an insert having lamellae as the insert seen in Figure 1 a, but in an inclinate position. In this case too there are active element 1, the covering 2 and the passive element.
  • the lamellae angularity improves the shavings removal away from the cutting area.
  • Figure 3 shows an insert composed of a whole of thin wires having a hardening covering and set together in a jacket 5.
  • the active elements 4 can be made of hard material covered by an extra-hard film, the passive elements 6 can be made of more tender material and vice versa.
  • the insert is composed of elements having very small pipes form 7 and extra-hard covering 8,active elements while the line of active elements are separated by very thin laminae 9 not covered, passive element.
  • This insert having small pipes form, has the advantage to be better cooled by the liquid circulating inside it.
  • Figure 5 shows a metallic tape 10 covered by an extra-hard material and then wrapped up to form an insert.
  • Figure 6 shows an insert composed on laminae 12, covered by an extra-hard coat 13 and its surface present parallel undulations 14, as in evidence in Figure 6a , these undulations allow a good circulating of the cooling liquid.
  • Figure 7 shows an insert composed by superimposed disks 15, having preferibly a central hole , some of them are covered by an extra-hard coat 16
  • Figure 8 shows an insert including some not covered granules and Figure 8a shows an insert with some covered granules ; and both these cases are considered after having worked. Notice that in the drawing of Figure 8 the granules have become inefficient and they can be detached as shown by 1 a, while in Figure 1 a, while in the embodiment in Figure 8a, the granules have always the efficiency caused by the covering 2.
  • the insert has to fixed on the tool support by brazing, sticking, etc., however in a known way.
  • the insert having flat elements ( Figures: 1,2,6,7 )are suitable for tools in which the anisotropy is absolutely necessary ( saws, drillin crowns, cutters, etc.,).
  • the inserts having wires form elements, small pipes form, wrapped tape form,granules form are more suitable for grinding or polishing flat surfaces and on which the cutting features not dipending on the movement trajectory of the insert are requested.
  • the thin and extra-hard films alternate with supporting elements , remarkably increase the cutting ability, as it happens on a saw-blade.
  • the insert is formed of flat lamellae, kept together by a bakalite glue.
  • the passive elements are composed of brass lamellae having 0,5 mm thickness
  • the elements are disposed in an orthogonal manner as regards the surface to manufacture.
  • the insert has been tried on a machine used for milling and grooving into the stone(marble) the result was: the same production per hour, the same duration of the tool normally abtained having a diamond milling, but the tools cost was less.
  • An insert for a grinding tool has been realized pressing a spring wrapped tape roll -see Figure 5- inside a pipe form container.
  • the tape is in temperate carbon steel and it has 0,08 mm thickness and it is covered by a molybden nitre and diamond film.
  • An insert (similar to the one in Example n.2 )has been realized,it has a discontinuous tipe covering and a 0,8 mm of pitch.
  • the proof has been performed as the one in Example n2 the cutting productiveness has increased 1,5-2 times and the tool endurance has increased 1,2-1,5 times.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
EP19920830664 1991-12-13 1992-12-10 Composite insert for cutting tools Withdrawn EP0547012A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBS910136 1991-12-13
ITBS910136A IT1253064B (it) 1991-12-13 1991-12-13 Inserto composito per utensili da taglio

Publications (2)

Publication Number Publication Date
EP0547012A2 true EP0547012A2 (de) 1993-06-16
EP0547012A3 EP0547012A3 (en) 1993-09-22

Family

ID=11344729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920830664 Withdrawn EP0547012A3 (en) 1991-12-13 1992-12-10 Composite insert for cutting tools

Country Status (3)

Country Link
EP (1) EP0547012A3 (de)
JP (1) JPH05245704A (de)
IT (1) IT1253064B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999028088A1 (en) * 1997-12-04 1999-06-10 Minnesota Mining And Manufacturing Company Tools with abrasive segments
US6479428B1 (en) 1998-07-27 2002-11-12 Battelle Memorial Institute Long life hydrocarbon conversion catalyst and method of making
US6680044B1 (en) 1999-08-17 2004-01-20 Battelle Memorial Institute Method for gas phase reactant catalytic reactions
CN103982139A (zh) * 2014-05-19 2014-08-13 中国有色桂林矿产地质研究院有限公司 一种高胎体钻齿及其制备方法
CN109732278A (zh) * 2018-12-26 2019-05-10 苏州瑞得恩自动化设备科技有限公司 一种高精度电子秤电机板的加工工艺

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1522593A (en) * 1919-10-13 1925-01-13 Rowland O Pickin Rotary drilling tool
US1792800A (en) * 1930-03-15 1931-02-17 Conrad F Birgbauer Lapping device
US3127715A (en) * 1960-04-27 1964-04-07 Christensen Diamond Prod Co Diamond cutting devices
US3972161A (en) * 1968-07-01 1976-08-03 Barnes Drill Co. Solid abrading tool with fiber abrasive
DE2238387A1 (de) * 1972-08-04 1974-03-28 Winter & Sohn Ernst Mehrschneidiges zerspanwerkzeug
US4128136A (en) * 1977-12-09 1978-12-05 Lamage Limited Drill bit
US4239502A (en) * 1978-11-17 1980-12-16 General Electric Company Diamond and cubic boron nitride grinding wheels with improved silver alloy bonds
US4452325A (en) * 1982-09-27 1984-06-05 Conoco Inc. Composite structure for cutting tools
JPS59156669A (ja) * 1983-02-21 1984-09-05 Sumitomo Electric Ind Ltd ソ−ブレ−ド用セグメント
GB8720498D0 (en) * 1987-08-29 1987-10-07 Saville P A Tool/tools
GB2234542B (en) * 1989-08-04 1993-03-31 Reed Tool Co Improvements in or relating to cutting elements for rotary drill bits
US5096465A (en) * 1989-12-13 1992-03-17 Norton Company Diamond metal composite cutter and method for making same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999028088A1 (en) * 1997-12-04 1999-06-10 Minnesota Mining And Manufacturing Company Tools with abrasive segments
US6196911B1 (en) 1997-12-04 2001-03-06 3M Innovative Properties Company Tools with abrasive segments
KR100523304B1 (ko) * 1997-12-04 2005-10-24 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 연마 세그먼트를 갖춘 공구
US6479428B1 (en) 1998-07-27 2002-11-12 Battelle Memorial Institute Long life hydrocarbon conversion catalyst and method of making
US6680044B1 (en) 1999-08-17 2004-01-20 Battelle Memorial Institute Method for gas phase reactant catalytic reactions
CN103982139A (zh) * 2014-05-19 2014-08-13 中国有色桂林矿产地质研究院有限公司 一种高胎体钻齿及其制备方法
CN109732278A (zh) * 2018-12-26 2019-05-10 苏州瑞得恩自动化设备科技有限公司 一种高精度电子秤电机板的加工工艺

Also Published As

Publication number Publication date
JPH05245704A (ja) 1993-09-24
IT1253064B (it) 1995-07-10
ITBS910136A0 (it) 1991-12-13
ITBS910136A1 (it) 1993-06-13
EP0547012A3 (en) 1993-09-22

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