WO2009072080A1 - Segment for working hard materials and process for making said segment - Google Patents
Segment for working hard materials and process for making said segment Download PDFInfo
- Publication number
- WO2009072080A1 WO2009072080A1 PCT/IB2008/055101 IB2008055101W WO2009072080A1 WO 2009072080 A1 WO2009072080 A1 WO 2009072080A1 IB 2008055101 W IB2008055101 W IB 2008055101W WO 2009072080 A1 WO2009072080 A1 WO 2009072080A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- segment
- support
- seats
- making
- cutting element
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/12—Cut-off wheels
- B24D5/123—Cut-off wheels having different cutting segments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D99/00—Subject matter not provided for in other groups of this subclass
- B24D99/005—Segments of abrasive wheels
-
- 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
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
-
- 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
- B28D1/121—Circular saw blades
Definitions
- This invention refers to a segment, preferably diamond-studded, to mount on disks, blades or other tools so as to carry out processing such as cutting, polishing, profiling and other processing on objects made of hard material such as marble, granite, glass, cement and other materials.
- a segment designed to be mounted on cutting disks and/or blades or other tools characterized by the fact that it comprises a support, that can be fastened to the tool and having a working surface in contact with the object to be processed.
- Seats of specific shapes are machined in said surface and at least a cutting element housed in at least one of said seats and having a shape that is the counterpart of the other.
- Cutting elements 16, one of which is shown in figures 4 and 7, are cylindrical-shape inserts comprised of metal wire 17 (core) around which diamond elements 18 are fastened, preferably with fine grain in order to increase the hardness of the finished product.
- Cutting element 16 according to one preferred method, is made by electrodepositing diamond bodies 18 on metal wire 17 and has a height equal to the depth of holes 14a and 14b.
- Cutting elements 26 and 36 can also have shapes different from the circular layout: for example they can have the shape of a parallelepiped (see figures 5, 8) or a hexagonal layout (see figures 6, 9). In these cases, too, diamond bodies 28, 38 are electrodeposited on their respective metal wires 27, 37.
- the holes machined in the segment support may have shapes different from the shape that is shown.
- a support may have both circular cross-section holes and polygonal cross-section holes.
- Even the layout of the holes themselves may vary according to cutting requirements.
- the cutting elements according to a second way of embodying the invention shown in fig. 10, are made directly in holes 64 of support 62, inserting powder 48, composed of metals and diamond, into the chosen holes on the support using funnel 63, so as to achieve, after heating in suitable ovens, segment 60 analogous to those shown in figures 11-14.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Coating With Molten Metal (AREA)
- Photovoltaic Devices (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
A segment (10; 60; 110; 210; 310) designed to be mounted on disks and/or blades and/or other tools for processing hard materials comprises a support (12; 62; 112; 212; 312) that can be fastened to the tool and having a contact surface (13) with the object to be processed, seats (14a, 14b, 64) of specific shapes being machined in said surface, and at least one cutting element (16; 116; 216; 316) housed in at least one of said seats (14a, 14b; 64) and having a shape that is the counterpart of the other.
Description
SEGMENT FOR WORKING HARD MATERIALS AND PROCESS FOR MAKING
SAID SEGMENT in the name of: DELLAS S.P.A. of Lugo di Grezzana -VR- (Italy)
DESCRIPTION This invention refers to a segment, preferably diamond-studded, to mount on disks, blades or other tools so as to carry out processing such as cutting, polishing, profiling and other processing on objects made of hard material such as marble, granite, glass, cement and other materials.
As is known the diamond-studded segments currently manufactured to mount on disks, blades or other tools call for mixing metal and diamond powders. A segment with specific processing characteristics is able to be manufactured by varying the characteristics (grain and purity) and the concentration of the diamond while maintaining the weight of the metal alloy unchanged.
However, because the metal powders and the diamond are casually mixed together, it is not possible to achieve a perfectly homogeneous concentration and a perfectly uniform layout of the diamond, neither in the thickness nor on the cutting surface. And in fact as the working surface gets worn the thickness of the segment is reduced and subsequent strata of the segment may have different processing characteristics. One way to ensure manufacture of a diamond-studded segment with better characteristics is to perform statistical control of the production process. This, however, increases manufacturing costs and generates process waste.
The main goal of this invention is to provide a segment for processing hard materials that comprises diamond powders (or other cutting material) that are
concentrated and positioned according to variables set out at the design stage and that consequently have the desired processing capacities.
This and other goals are achieved by a segment designed to be mounted on cutting disks and/or blades or other tools, characterized by the fact that it comprises a support, that can be fastened to the tool and having a working surface in contact with the object to be processed. Seats of specific shapes are machined in said surface and at least a cutting element housed in at least one of said seats and having a shape that is the counterpart of the other.
Advantageously making the support with uniformly positioned seats it is possible to achieve an analogous layout of the cutting elements housed in these seats. In addition it is possible to prepare a single type of support with a fixed number of seats and insert the cutting elements only in the desired seats. In this way a single support can be used to make different types of segments (with different processing characteristics) by simply placing the cutting elements in a different manner.
The cutting element can be made by fastening, for example by electrodeposition, diamond bodies on a metal core, achieving a wire-shaped element with a cross section in the desired shape, the counterpart to the shape of the seats machined in the support. The cutting element made in this way is inserted and fastened in the seats on the support by heating the support, inclusive of the cutting elements, in special ovens.
Advantageously the cutting element may be made by inserting a mixture of metal powder and diamond into the seats on the support and heating the segment made in this way in special ovens.
The goal of the invention is also achieved using a method for making a segment for processing hard materials characterized by the fact that it comprises the phases for making a support in which seats are machined and fastening at least one cutting element to at least one of said seats. Making the support may be done by molding metal powders or by mixing metal powders and plastic and/or synthetic materials. Advantageously the absence of diamond powders in the fluid for making the support increases the duration of the mold.
The shape of the support may be prismatic for diamond-studded blades, semicircular for diamond-studded disks or any other shape so that the diamond- studded segment achieved may be used in any type of diamond-studded tool on the market (diamond-studded wire, numerical control tools and others).
The aspects and advantages of this invention are rendered more evident by the following description, given as a mere example, which refers to the attached drawings where: fig. 1 is an axonometric view of a segment that is the purpose of the invention; fig. 2 is a view from above of a support for achieving a segment according to the invention; fig. 3 is a side view of the support in fig. 2; fig. 4, 5, 6 are respectively views from above of the three cutting elements having different layouts according to one method of embodying the invention; fig. 7, 8, 9 are respective side views of the cutting elements in figures 4, 5 and 6;
fig. 10 is a side view of the segment under construction according to one method of embodying the invention; fig. 11 , 12, 13, 14 are views from above of the segments according to different ways of embodying the invention. Number 10, when referring to the figures, indicates a segment for processing hard materials to be fastened according to the known technique to a tool such as a blade, disk or other tool. Segment 10 comprises support 12 having blind holes 14a, 14b some of which house cutting elements 16.
More specifically support 12, visible in figures 2 and 3, is a pre-molded die with the shape of a parallelepiped where circular blind holes 14a and 14b are machined, all with the same depth and with openings on surface 13 in contact with the object to be processed. The holes are placed on alternating rows composed of four holes 14a and three holes 14b each and are placed at right-angles with respect to surface 13. Naturally the axes of the holes can be inclined with respect to the contact surface with the object to be cut.
Support 12 can be made by pumping a fluid into a mold with counterpart shape which fluid can be composed of metal powders or metal powders mixed with plastic or synthetic materials. The absence of diamond powders in the basic substance increases the durability of the mold for making the support. The depth of holes 14a and 14b is such that base 15 of support 12 is made entirely of metal material or composite material (metal, plastic and/or synthetic materials) in order to permit a more stable and correct welding of the segment to the tool by braze-welding or laser-welding.
Cutting elements 16, one of which is shown in figures 4 and 7, are cylindrical-shape inserts comprised of metal wire 17 (core) around which diamond
elements 18 are fastened, preferably with fine grain in order to increase the hardness of the finished product. Cutting element 16, according to one preferred method, is made by electrodepositing diamond bodies 18 on metal wire 17 and has a height equal to the depth of holes 14a and 14b. Cutting elements 26 and 36 can also have shapes different from the circular layout: for example they can have the shape of a parallelepiped (see figures 5, 8) or a hexagonal layout (see figures 6, 9). In these cases, too, diamond bodies 28, 38 are electrodeposited on their respective metal wires 27, 37.
Cutting elements 16 made in this way are inserted in holes 14a and 14b and held in place mechanically or by welding in suitable ovens. More specifically in ovens the various components are fastening by being sintered and/or brazed thanks to shrinkage of the metal parts, so permitting the diamond parts to be anchored in place.
It is possible to achieve segments with different processing capacities according to the layout of cutting elements 16. Figures 11-14 show, as examples, four different possible layouts, all with orderly distributions, for the cutting elements. Segment 10 shown in fig. 11 includes a small number of cutting elements 16 whereas segment 110, as in fig. 12, comprises a greater number of elements 116 that further increase in number in supports 210, 310 in figures 13 and 14.
Even the holes machined in the segment support, the purpose of the invention, like the cutting elements, may have shapes different from the shape that is shown. For example a support may have both circular cross-section holes and polygonal cross-section holes. Even the layout of the holes themselves may vary according to cutting requirements.
The cutting elements, according to a second way of embodying the invention shown in fig. 10, are made directly in holes 64 of support 62, inserting powder 48, composed of metals and diamond, into the chosen holes on the support using funnel 63, so as to achieve, after heating in suitable ovens, segment 60 analogous to those shown in figures 11-14.
For both variations of the invention the part of support 12 that comes in contact with the object to be processed may have a different shape according to the tool to which support 12 must be fastened. For example the shape is prismatic in case of blades whereas for disks the processing surface has a semicircular shape.
Claims
1) Segment (10; 60; 110; 210; 310) suitable for being mounted on disks and/or blades and/or other tools for processing hard materials characterized by the fact that it comprises: - a support (12; 62; 112; 212; 312) fastenable to the tool and having a contact surface (13) with the object to be processed, seats (14a, 14b, 64) of specific shapes being machined in said surface;
- at least one cutting element (16; 116; 216; 316) housed in at least one of said seats (14a, 14b; 64) and having a shape that is the counterpart of the other.
2) Segment (10; 60; 110; 210; 310) according to claim 1 wherein seats (14a, 14b; 64) are uniformly positioned.
3) Segment (10; 60; 110; 210; 310) according to one of the previous claims wherein the cutting elements (16; 116; 216; 316), being housed in at least two of said seats (14a, 14b; 64), are uniformly placed on said support (12; 62; 112;
212; 312).
4) Segment (310) according to one of the previous claims wherein the cutting elements (316) are housed in all the seats of the support (312).
5) Segment (10; 60; 110; 210; 310) according to one of the previous claims, wherein the seats (14a, 14b; 64) of the support are cavities that extend in a basically right-angle direction with respect to the working surface (13) of the support (12; 112; 212; 312).
6) Segment according to one of the claims from 1 to 4 wherein the seats of the support are cavities that extend in a direction that is inclined with respect to the cutting surface of the support.
7) Segment (10; 110; 210; 310) according to one of the previous claims wherein at least one cutting element comprises a core (17; 27; 37) around which diamond bodies (18; 28; 38) are fastened.
8) Segment (10; 110; 210; 310) according to claim 7, wherein said core (17; 27; 37) is made of metal.
9) Segment (10; 110; 210; 310) according to claim 8, wherein the diamond bodies (18; 28; 38) are electro-deposited on said core (17; 27; 37).
10) Segment (60) according to one of the claims from 1 to 6, wherein at least one cutting element is made of a substance (48) comprised of metal power and diamonds mixed together.
11) Segment (10; 60; 110; 210; 310) according to one of the previous claims, wherein the support is made of metal.
12) Segment according to one of the claims from 1 to 10, wherein the support is made of metal and plastic and/or synthetic material. 13) Blade characterized by the fact that it comprises one segment (10; 60; 110; 210; 310) according to the previous claims.
14) Method for making a segment (10; 60; 110; 210; 310) for processing hard materials characterized by the fact that it comprises the phases of:
- making a support (12; 62; 112; 212; 312) where seats (14a; 14b; 64) are machined;
- fastening at least one cutting element (16; 116; 216; 316) to at least one of said seats (14a; 14b; 64).
15) Method for making a segment (10; 60; 110; 210; 310) according to claim 14, wherein the support (12; 62; 112; 212; 312) is made by molding metal powders.
16) Method for making a segment according to claim 14, wherein the support is made by molding metal powders mixed with plastic and/or synthetic materials.
17) Method for making a segment (10; 110; 210; 310) according to claim 14, wherein, before fastening at least one cutting element to one seat, the cutting element (16; 116; 216; 316) is made by fastening the diamond bodies (18; 28;
38) onto a metal core (17; 27; 37).
18) Method for making a cutting segment according to claim 17, wherein the cutting element is fastened to the support by brazing and/or sintering.
19) Method for making a cutting segment (60) according to claim 14, wherein fastening of at least one cutting element is made by inserting metal powder
(48) mixed with diamond powder into at least one seat (64) of one support (62) and heating the support (62) in the oven together with at least one cutting element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITVR2007A000185 | 2007-12-07 | ||
| ITVR20070185 ITVR20070185A1 (en) | 2007-12-07 | 2007-12-07 | SEGMENT FOR THE PROCESSING OF HARD MATERIALS AND THE METHOD FOR THE REALIZATION OF THE SAME |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009072080A1 true WO2009072080A1 (en) | 2009-06-11 |
Family
ID=40315999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2008/055101 Ceased WO2009072080A1 (en) | 2007-12-07 | 2008-12-04 | Segment for working hard materials and process for making said segment |
Country Status (2)
| Country | Link |
|---|---|
| IT (1) | ITVR20070185A1 (en) |
| WO (1) | WO2009072080A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2572912C2 (en) * | 2014-06-10 | 2016-01-20 | Кирилл Николаевич Войнов | Grinding-abrasive device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59156669A (en) * | 1983-02-21 | 1984-09-05 | Sumitomo Electric Ind Ltd | Sawblade segment |
| EP0138237A1 (en) * | 1983-07-20 | 1985-04-24 | HS VEGLIO S.r.l. | Improvements in diamond-set segments and inserts |
| EP0620082A1 (en) * | 1993-03-29 | 1994-10-19 | Norton Company | Abrasive tool |
| US6193770B1 (en) * | 1997-04-04 | 2001-02-27 | Chien-Min Sung | Brazed diamond tools by infiltration |
| WO2002066217A1 (en) * | 2001-02-20 | 2002-08-29 | Ehwa Diamond Ind. Co., Ltd. | Machining tips and cutting wheel, grinding wheel and drilling wheel therewith |
| CN101053981A (en) * | 2007-05-16 | 2007-10-17 | 张小军 | Brazing-thermal pressing sintering diamond tool sectional block |
| WO2008119298A1 (en) * | 2007-03-30 | 2008-10-09 | Xiaojun Zhang | Newfashioned brazing-sintering diamond tool segment |
-
2007
- 2007-12-07 IT ITVR20070185 patent/ITVR20070185A1/en unknown
-
2008
- 2008-12-04 WO PCT/IB2008/055101 patent/WO2009072080A1/en not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59156669A (en) * | 1983-02-21 | 1984-09-05 | Sumitomo Electric Ind Ltd | Sawblade segment |
| EP0138237A1 (en) * | 1983-07-20 | 1985-04-24 | HS VEGLIO S.r.l. | Improvements in diamond-set segments and inserts |
| EP0620082A1 (en) * | 1993-03-29 | 1994-10-19 | Norton Company | Abrasive tool |
| US6193770B1 (en) * | 1997-04-04 | 2001-02-27 | Chien-Min Sung | Brazed diamond tools by infiltration |
| WO2002066217A1 (en) * | 2001-02-20 | 2002-08-29 | Ehwa Diamond Ind. Co., Ltd. | Machining tips and cutting wheel, grinding wheel and drilling wheel therewith |
| WO2008119298A1 (en) * | 2007-03-30 | 2008-10-09 | Xiaojun Zhang | Newfashioned brazing-sintering diamond tool segment |
| CN101053981A (en) * | 2007-05-16 | 2007-10-17 | 张小军 | Brazing-thermal pressing sintering diamond tool sectional block |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2572912C2 (en) * | 2014-06-10 | 2016-01-20 | Кирилл Николаевич Войнов | Grinding-abrasive device |
Also Published As
| Publication number | Publication date |
|---|---|
| ITVR20070185A1 (en) | 2009-06-08 |
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