KR20110013683A - Method for manufacturing of cutting tip for saw and structure thereof - Google Patents
Method for manufacturing of cutting tip for saw and structure thereof Download PDFInfo
- Publication number
- KR20110013683A KR20110013683A KR1020090071269A KR20090071269A KR20110013683A KR 20110013683 A KR20110013683 A KR 20110013683A KR 1020090071269 A KR1020090071269 A KR 1020090071269A KR 20090071269 A KR20090071269 A KR 20090071269A KR 20110013683 A KR20110013683 A KR 20110013683A
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- KR
- South Korea
- Prior art keywords
- cutting
- tip
- cutting tip
- tips
- unit
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/008—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression characterised by the composition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The present invention relates to a method for manufacturing a cutting tip of a cutting saw, and a structure thereof. In a cutting saw having a rotating hole coupled to a rotating shaft of a cutting machine at a center of a circular disc, and shanks formed at regular intervals at a disc edge, At least one of iron (Fe), copper (Cu), cobalt (Co), zinc (Zn), nickel (Ni), tungsten (W), copper-tin (CuSn), silver (Ag), and manganese (Mn) A cutting tip, which is a sintered alloy, is a sintered alloy that is fired after forming a plurality of unit cutting tips in which metal powder cutting powders of diamond or cemented carbide are mixed at different ratios at random intervals or at regular intervals, and then bonded to the shank. . According to the present invention, the unit cutting tips having different component ratios are bonded to each other to significantly reduce the contact resistance with the cutting object, thereby improving cutting efficiency according to the cutting, and initial cutting of cutting saws by the plurality of unit cutting tips is enhanced to load Can be minimized, the load by cutting is small, the power consumption is reduced, the noise is reduced when cutting by cutting the cutting object, the productivity of the cutting object is improved by the cutting efficiency, It is intended to improve the durability of the cutting tip by lengthening the length so that it can be used for a long time.
Saw, shank, tip, metal powder, cutting powder, diamond
Description
The present invention relates to a method for manufacturing cutting tips for cutting saws and structures thereof, and more particularly, to a method for manufacturing cutting tips bonded to shanks of cutting or cutting diamond saws or cemented carbide saws. will be.
Generally, the cutting tips used at the edges of diamond saw or cemented carbide hard metal are iron (Fe), tungsten (W), cobalt (Co) and copper which bond diamond powder or cemented carbide powder. Sintered after sintering after molding by mixing with metal powders such as (Cu), nickel (Ni), tin (Sn), copper-tin (CuSn), zinc (Zn), copper-zinc (CuZn), silver (Ag) Alloy.
In the forming step before firing, the mixed powder is put into a cubic cavity, and the first press molding is carried out, and the first press-molded mixture (hereinafter referred to as the first press molding) is placed in the cavity of the carbon mold, and the puncher is placed. The cutting tip is shaped to correspond to the shape of the puncher while applying a relatively large pressure. A diamond cutting tip or cemented carbide cutting tip is completed by firing a cutting tip shaped into a constant shape in a sintering furnace.
As a prior art, the stone cutting wheel of Korean Patent Publication No. 10-0764037 and a manufacturing process thereof are provided with a disk-shaped disk having a rotating hole in which a rotating shaft of a cutting machine is inserted at the center thereof, and is arranged at equal intervals in the circumferential portion of the disk. A stone comprising a tip formed at an outer side or an inner side of the inlet part to facilitate circulation of the coolant and removal of the cutting tip such as cut stone or concrete or asphalt, and a slot formed at equal intervals between the tip and the tip. In a cutting wheel, there is disclosed a stone cutting wheel in which a filler made of a softer metal material than the tip fills the cutout.
In the prior art, the filler formed in the tip is filled with a softer filler than the tip to increase cutting speed and reduce cutting noise to improve the working environment.
However, while filling the incision formed in the tip to reduce the noise generated when cutting the stone, concrete or asphalt, and improve the cutting speed to some extent, there was still a high problem in increasing the initial cutting force and reducing the initial cutting load Also, there were technical limitations to lengthening the tip.
The present invention is to solve the above problems, by integrally forming the unit cutting tips of different component ratios consisting of cutting tips integrally to significantly reduce noise and periodic contact resistance due to cutting of the cutting object and cutting efficiency The purpose is to improve.
In addition, another object of the present invention is to increase the productivity of cutting saws and to significantly reduce noise while forming the length of the tip by pressing a plurality of unit cutting tips of various components.
In order to achieve the above object, the present invention provides a circular disk having a predetermined diameter in which a rotating hole coupled to a rotating shaft of a cutting machine is formed at a center thereof, a cutout groove is formed at regular intervals, and a shank is formed between the cutout grooves. Making; (b) Iron (Fe), copper (Cu), cobalt (Co), zinc (Zn), nickel (Ni), tungsten (W), copper-tin (CuSn) in the cutting powder of diamond or cemented carbide with unit cutting tips Mixing at least one metal powder of silver (Ag) and manganese (Mn) in different ratios; (c) first molding each of the powders mixed at different ratios into a mold having a unit cutting tip shape at a predetermined pressure; (d) sequentially arranging each of the primary molded unit cutting tips in one cutting tip forming mold having a predetermined shape and volume, and secondary forming at a pressure greater than the primary forming; (e) alternately arranging the secondary molded cutting tips in a carbon mold; (f) inserting the carbon mold into a furnace and sintering by selectively adding nitrogen gas (N 2 ) at a constant pressure and temperature; (g) charging the sintered carbon mold in a cooling press to cool at a constant temperature for a predetermined time; (h) characterized in that it provides a method for producing a cutting tip of the cutting saw comprising the step of bonding the cutting tip formed from the cooled carbon mold to the shank of the disk with silver or laser.
In addition, the present invention is a cutting hole formed in the center of the circular disk coupled to the rotary shaft of the cutting machine, the shank is formed at a predetermined interval on the disk edge, iron (Fe), copper (Cu), cobalt (Co ) Different ratios of cutting powder of diamond or cemented carbide to one or more metal powders of zinc (Zn), nickel (Ni), tungsten (W), copper-tin (CuSn), silver (Ag) and manganese (Mn) The cutting tip structure of the cutting saw which bonded the said cutting shank which is the sintered alloy baked and shape | molded after shaping | molding the several unit cutting tips mixed by the randomly or a predetermined rule at regular intervals, and shape | molding is characterized by the above-mentioned.
According to the present invention, by cutting the unit cutting tips made of different component ratios by the solution means to significantly reduce the contact resistance with the cutting object to improve the cutting efficiency according to the cutting, the cutting saws by a plurality of unit cutting tips The initial cutting is enhanced to minimize the load, the load is reduced, the power consumption is reduced, the noise is reduced when cutting by cutting the cutting object, the productivity of the cutting object is increased by the cutting efficiency It improves the durability of a cutting tip, for example, by lengthening a cutting tip and making it use for a long time.
Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the cutting tip manufacturing method and structure of the cutting saw of the present invention.
1 is a perspective view showing a saw according to the present invention, Figure 2 is a front view, Figure 3 shows a structure of a cutting tip shown in various embodiments.
First, the cutting tip of the cutting saw of the present invention is a cutting tip by integrally molding and joining a plurality of unit cutting tips having different component ratios to reduce contact resistance with cutting objects such as stone, concrete, wall or brick, thereby cutting efficiency. Is to improve.
The
The
The curved portions of the
Furthermore, the components of the
The plurality of
In FIGS. 3A to 3C, the spacings of the
Meanwhile, in the structure of the
Figure 3f is composed of nine unit cutting tips, Figure 3g shows a modified embodiment consisting of five unit cutting tips.
The width of the
And the length of the
The cutting saw 1 to which the
Such a cutting tip manufacturing method of the cutting saw of the present invention will be described with reference to the drawings showing the manufacturing process of Figures 4a to 4f and the flow chart of FIG.
First, a circular disk having a predetermined diameter having a rotating
And the unit cutting tip (20a-20g) to the cutting powder of diamond or cemented carbide, iron (Fe), copper (Cu), cobalt (Co), zinc (Zn), nickel (Ni), tungsten (W), copper-tin One or more metal powders of (CuSn), silver (Ag), and manganese (Mn) are mixed at different ratios (S11). That is, it may be mixed in a plurality of mixing ratios by various mixing ratios. At this time, the
In this way, the metal powder and the cutting powder mixed at different ratios are primary-molded at predetermined pressures in a mold having a predetermined
In FIG. 4A, primary shaping forms each
In FIG. 4B, each of the unit-formed
In addition, the present invention is a multi-sandwich type, the unit cutting tips (20a-20g) can be joined by selectively arranging several to several tens. Although the present invention shows a structure in which seven
The secondary molded
The carbon mold is placed in a furnace and sintered at a predetermined pressure and temperature (S15). At this time, nitrogen gas (N 2 ) is added to the furnace to sinter as necessary. When sintering in the furnace, the sintering temperature is about 700 ~ 900 ℃, the pressure applied to the carbon mold is about 150 ~ 300Kg / Cm 2 . Nitrogen gas (N2) introduced into the furnace is approximately 30 Nm 3 / Hr.
Next, the carbon mold sintered in the furnace is charged to a cooling press and cooled at a predetermined temperature for a predetermined time (S16). At this time, the pressure applied to the cooling press at the time of cooling is approximately 300 to 350 Kg / Cm 2 . The cutting
In this way, the cutting tips are bonded to the edges of the cutting saw at regular intervals. The
On the other hand, the cutting
6 is a graph showing the relationship between the length of the tip and the load acting when the cutting saw to which the cutting tip of the present invention is molded and joined to cut the cutting object. Here, the load applied to the initial cutting tip when cutting the object to be cut is shown, and it can be seen that the load R drops to approximately 90% after the load of 100% is applied. The cutting loads are reduced in series with the
Furthermore, the graph of FIG. 7 shows the relationship between the total load of the cutting tip and the length of the tip bonded to the edge of the cutting saw. Here you can see that the load on one tip drops from 100% to approximately 90%.
The
According to the present invention, a structure of a cutting tip of a saw for cutting a cutting object such as stone, concrete, brick, or a wall surface has a plurality of different mixing ratios, respectively, than when a single reinforcing fixture is molded on one cutting tip. By arranging the unit cutting tips there is an advantage that the cutting efficiency for the cutting object is improved.
While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who has a can easily know.
1 is a perspective view showing a cutting saw according to the present invention.
2 is a front view showing a cutting saw according to the present invention.
3A to 3G are views showing the structure of the cutting tip.
4A to 4F are views illustrating a manufacturing process of the cutting tip of the present invention.
5 is a flowchart illustrating a manufacturing process of a cutting tip of the cutting saw of the present invention.
6 is a graph showing a cutting load generated in the unit cutting tip when the cutting saw of the present invention cuts the cutting object.
7 is a graph showing the cutting load generated at the cutting tip when the cutting saw of the present invention cuts the cutting object.
♣ Explanation of symbols for main part of drawing ♣
1: Soe 10: Disc
11: rotating hole 12: shank
13: cutting groove 20: cutting tip
20a-20g: unit cutting tip
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020090071269A KR20110013683A (en) | 2009-08-03 | 2009-08-03 | Method for manufacturing of cutting tip for saw and structure thereof |
Applications Claiming Priority (1)
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KR1020090071269A KR20110013683A (en) | 2009-08-03 | 2009-08-03 | Method for manufacturing of cutting tip for saw and structure thereof |
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KR20110013683A true KR20110013683A (en) | 2011-02-10 |
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KR1020090071269A KR20110013683A (en) | 2009-08-03 | 2009-08-03 | Method for manufacturing of cutting tip for saw and structure thereof |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107081428A (en) * | 2017-03-13 | 2017-08-22 | 东莞市依诺电子科技有限公司 | A kind of radium-shine processing method of the netted constitutional detail of metal material |
CN109175388A (en) * | 2018-10-31 | 2019-01-11 | 泉州市华兴超硬工具有限公司 | A kind of high-performance diamond saw blade and preparation method thereof |
CN109365827A (en) * | 2018-10-31 | 2019-02-22 | 广东奔朗新材料股份有限公司 | One kind is dry to cut diamond saw blade and preparation method thereof |
-
2009
- 2009-08-03 KR KR1020090071269A patent/KR20110013683A/en not_active Application Discontinuation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107081428A (en) * | 2017-03-13 | 2017-08-22 | 东莞市依诺电子科技有限公司 | A kind of radium-shine processing method of the netted constitutional detail of metal material |
CN107081428B (en) * | 2017-03-13 | 2019-02-19 | 东莞市依诺电子科技有限公司 | A kind of radium-shine processing method of the netted constitutional detail of metal material |
CN109175388A (en) * | 2018-10-31 | 2019-01-11 | 泉州市华兴超硬工具有限公司 | A kind of high-performance diamond saw blade and preparation method thereof |
CN109365827A (en) * | 2018-10-31 | 2019-02-22 | 广东奔朗新材料股份有限公司 | One kind is dry to cut diamond saw blade and preparation method thereof |
CN109175388B (en) * | 2018-10-31 | 2021-08-31 | 泉州市华兴超硬工具有限公司 | Diamond saw blade and preparation method thereof |
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