CN116967530A - Sandwich type diamond saw blade and production process thereof - Google Patents
Sandwich type diamond saw blade and production process thereof Download PDFInfo
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- CN116967530A CN116967530A CN202311049880.7A CN202311049880A CN116967530A CN 116967530 A CN116967530 A CN 116967530A CN 202311049880 A CN202311049880 A CN 202311049880A CN 116967530 A CN116967530 A CN 116967530A
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- tool bit
- inner layer
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 44
- 239000010432 diamond Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 95
- 238000003466 welding Methods 0.000 claims abstract description 87
- 238000005245 sintering Methods 0.000 claims abstract description 50
- 239000011159 matrix material Substances 0.000 claims abstract description 37
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 9
- 206010066054 Dysmorphism Diseases 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The application discloses a sandwich type diamond saw blade, which comprises a disc-shaped matrix and a cutting tool bit sintered on the matrix, wherein the matrix comprises an inner layer and outer layers welded on two sides of the inner layer, and the diameters of the outer layer and the inner layer are the same; the outer peripheral surface of the inner layer is provided with a plurality of bulges which are integrally formed, the bulges are uniformly distributed around the circle center of the inner layer, and the bulges protrude out of the outer peripheral surface of the matrix to form a sandwich body; the cutting tool bit has two sets of, is located the both sides of sandwich body respectively, and every cutting tool bit of group quantity is a plurality of, and every cutting tool bit of group constitutes circular structure and places on the surface of sandwich body. Also discloses a production process of the sandwich type diamond saw blade, which comprises the following steps: and (3) treating a matrix, spot welding, assembling and sintering. The saw blade can not generate offset in the cutting process, and has better cutting quality.
Description
Technical Field
The application relates to the technical field of cutting, in particular to a sandwich type diamond saw blade and a production process thereof.
Background
Saw blades are a generic term for thin sheet circular cutters used to cut solid materials. The saw blade may be divided into: a diamond saw blade for stone cutting; a high-speed steel saw blade for cutting a metal material; the hard alloy saw blade is used for cutting solid wood, furniture, artificial boards, aluminum alloy, aluminum profiles, radiators, plastics, plastic steel and the like.
However, during the use process of the saw blade, abrasion is easy to occur, and because of the problem of stress of the saw blade, the two sides of the saw blade are firstly abraded, so that after the service time of the saw blade is longer, the cross-street surface at the edge of the saw blade becomes a conical shape, and therefore, the edge of the saw blade is thinnest, and because the saw blade is too thin, the saw blade is easy to deviate in the cutting process, the cutting linear rate is low, and the cutting quality is affected.
Disclosure of Invention
The application provides a sandwich type diamond saw blade and a production process thereof, which aim to solve the problem that the saw blade is easy to deviate in cutting after being used for too long.
In a first aspect, the present application provides a sandwich diamond saw blade, which adopts the following technical scheme:
a sandwich type diamond saw blade comprises a disc-shaped matrix and a cutting tool bit sintered on the matrix, wherein the matrix comprises an inner layer and outer layers welded on two sides of the inner layer, and the diameters of the outer layer and the inner layer are the same;
the outer peripheral surface of the inner layer is provided with a plurality of bulges which are integrally formed, the bulges are uniformly distributed around the circle center of the inner layer, and the bulges protrude out of the outer peripheral surface of the matrix to form a sandwich body;
the cutting tool bit has two sets of, is located the both sides of sandwich body respectively, and every cutting tool bit of group quantity is a plurality of, and every cutting tool bit of group constitutes circular structure and places on the surface of sandwich body.
Through adopting above-mentioned technical scheme, because the sandwich is for the cutting tool bit that becomes integrative after the sintering, the sandwich is inside the cutting tool bit that distributes alone, then when the cutting tool bit wearing and tearing expose the sandwich, the sandwich will produce the fracture under violent collision with the material contact of waiting to cut, thereby make the cutting part of saw bit keep the concave shape of middle low both sides height always, can the biggest possible problem that produces the skew when avoiding producing the cutting.
Optionally, the inner layer and the outer layer are provided with a plurality of mounting holes, and the plurality of mounting holes are uniformly distributed on the inner layer and the outer layer in a ring shape;
the inner layer and the outer mounting hole are arranged on the inner layer, the mounting hole is close to the outer edge, the mounting hole is internally provided with a fixed cutter head, the fixed cutter head protrudes out of the surfaces of the two outer layers, which are far away from each other, and the cutting cutter head and the fixed cutter head can be melted into a whole during sintering.
Through adopting above-mentioned technical scheme, fixed tool bit and cutter head can melt into a whole after the sintering, and fixed tool bit is mostly in the mounting hole this moment, then is equivalent to tool bit part and base member part production intercrossing, can make the fixed more stable of cutter head, provides the quality of saw bit.
In a second aspect, the application provides a production process of a sandwich diamond saw blade, which adopts the following technical scheme: a production process of a sandwich type diamond saw blade comprises the following steps:
and (3) matrix treatment: spraying release agents on one side of the two outer layers, enabling one side of the two outer layers, on which the release agents are sprayed, to face the inner layer, and clamping the inner layer in the middle;
spot welding: welding the outer layer and the inner layer together by spot welding to prepare a matrix;
and (3) assembling: assembling the cutting bit and the matrix on a sintering mold; firstly, placing a cutting tool bit on a sintering mold, then placing a substrate on the cutting tool bit, placing a fixed tool bit in a mounting hole, placing another group of cutting tool bits on a sandwich body, and finally placing the sintering mold on the cutting tool bit, wherein the two groups of cutting tool bits are in a circular ring shape, and the sandwich body is clamped by the two groups of cutting tool bits;
sintering: sintering the assembled matrix to prepare the sandwich diamond saw blade.
Through adopting the technical scheme, the two outer layers clamp the inner layer in the middle, then the outer layers and the inner layer are fixed by electric welding to form a matrix, then the matrix is placed in a sintering die, after sintering, the cutting tool bit is hot melted and coated around the sandwich body, the fixed tool bit is positioned in the mounting hole, the inner area of the matrix can be protected, and the cutting tool bit falls off due to abrasion of the placed matrix; with the radial direction of cutting, firstly the cutting bit is worn out, when the sandwich body is exposed, the sandwich body is contacted with the material to be cut, and the sandwich body is broken under severe collision, so that the cutting part of the saw blade always keeps the sandwich body as a middle part, and the height of the cutting part is lower than that of the cutting bit positioned at two sides of the sandwich body, thereby avoiding deflection during cutting.
Optionally, the matrix is treated without spraying a release agent within 50-100mm around the mounting hole.
Through adopting above-mentioned technical scheme, need install fixed tool bit in the mounting hole, if spraying release agent around the mounting hole, because of the lubrication effect of release agent, fixed tool bit easily drops.
Optionally, the spraying thickness of the release agent is 0.2-0.3mm.
Through adopting above-mentioned technical scheme, release agent thickness is suitable, can prevent that release agent is thinner, is difficult to play the effect that prevents skin and inlayer bonding, consequently can prevent that the product from not having the amortization effect.
Optionally, during the molding, the distance between the inner ring of the cutting tool bit and the inner ring of the sintering mold is the same.
By adopting the technical scheme, the distance between the inner ring of the cutting tool bit and the inner ring of the sintering die is the same, so that the uniformity of the coating of the cutting tool bit on the sandwich body after sintering can be ensured, and the wear resistance and the breaking strength of the saw blade are improved.
Optionally, during the welding, utilize spot welding fixture to fix inlayer and two skin, spot welding fixture is discoid, and the diameter is the same with the diameter of base member, is fixed with the dysmorphism piece on the spot welding fixture, and when spot welding fixture centre of a circle and base member centre of a circle coincide, the dysmorphism piece can insert in the mounting hole.
Through adopting above-mentioned technical scheme, utilize spot welding fixture to fix inlayer and two outer together, form the base member, correspond the grafting with the dysmorphism piece on the spot welding fixture with inlayer, the mounting hole on the outer to fix the base member that inlayer and two outer formed together, make the mounting hole position on inlayer and the two outer accurate and unified, be convenient for weld the back of accomplishing, the placing of fixed tool bit, and be favorable to the welding to go on, prevent that the base member from taking place to warp.
Optionally, the special-shaped blocks are provided with a plurality of, and when the circle center of the spot welding fixture is coincident with the circle center of the matrix, the special-shaped blocks can be correspondingly inserted into the mounting holes.
Through adopting above-mentioned technical scheme, a plurality of dysmorphism pieces can correspond in inserting the mounting hole of seting up on inlayer and the two skin to make inlayer and the more accurate coincidence of skin, be convenient for more accurate welding.
Optionally, during sintering, the assembled substrates are placed layer by layer, so that the circle centers of the assembled substrates are on the same vertical line, and the assembled substrates cannot be moved after being placed.
Through adopting above-mentioned technical scheme, assembled sintering mould, cutting tool bit, fixed tool bit and base member can not move easily, produce the skew when preventing fixed tool bit sintering, when needs move, need take the position of fixed tool bit or cutting tool bit after adjusting the sintering mould earlier.
Optionally, the cutting bit and the fixed bit each comprise a matrix and diamond powder, the matrix comprising the following components in percentage: 20-30% of copper, 10-15% of iron, 8-10% of tin, 8-10% of nickel and 10-50% of prealloy powder, wherein the concentration of diamond powder in a matrix is 0.55-0.72cts/cm 3 。
By adopting the technical scheme, the wetting angle between the nickel and the diamond is smaller, so that the connection between the matrix and the diamond is firmer during powder metallurgy, the tin has higher strength and hard texture, the hardness of the sintered layer is improved, the wear resistance is better, the binding force between the cutter head part and the steel matrix is strong, and the phenomenon of tooth falling is not easy to occur; and the elasticity and plastic deformation of the matrix are reduced more, the circular saw blade is not easy to generate end jump, and the molding quality of the product is improved.
In summary, the matrix is manufactured by coating the release agent on the outer layer and then welding the outer layer with the inner layer, the matrix, the sintering die, the cutting tool bit and the fixed tool bit are assembled and then sintered, the cutting tool bit is hot-melted and coated on two sides of the sandwich body, when the saw blade is worn and the sandwich body is broken, the cutting tool bit around the sandwich body is hard in texture, so that the cutting smoothness can be continuously maintained, the deviation rate is reduced, and the cutting accuracy is improved.
Drawings
Fig. 1 is an exploded view of the overall structure of a saw blade in accordance with the first embodiment.
FIG. 2 is a schematic diagram showing the state of the sandwich body after breaking in the first embodiment.
Fig. 3 is a schematic view highlighting the mounting hole in the first embodiment.
Fig. 4 is a schematic view of a sintering mold in the first embodiment.
Fig. 5 is a schematic view of the structure of the left cutter head in the first embodiment.
Fig. 6 is an exploded view of the right bit and inner layer mating in the first embodiment.
Fig. 7 is a schematic structural diagram of a spot welding fixture according to an embodiment.
Reference numerals illustrate:
1. a base; 11. an inner layer; 111. positioning holes; 12. an outer layer; 121. a round hole; 13. a through hole; 14. a mounting hole; 15. fixing the cutter head; 2. a cutter head; 21. a left cutter head; 211. a positioning block; 22. a right cutter head; 221. positioning columns; 3. a sandwich; 4. sintering a die; 41. a center column; 42. a lower template; 43. an upper template; 5. a spot welding fixture; 51. an inner welding ring; 511. welding holes; 52. a middle welding ring; 53. an outer weld ring; 54. a special-shaped block; 55. a cylinder.
Detailed Description
The present application is described in further detail below in conjunction with the following description and the accompanying drawings.
And (3) a release agent: the Korean comet materials industry, BNA-20, has the main components: 5-10% of boron nitride mixture and 80-90% of ethanol;
copper: electrolytic copper powder, 300 mesh, manufacturer is a new material with grinding powder (Beijing) limited company;
iron: reduced iron powder, 200 mesh, manufacturer is Beijing Boyuan powder metallurgy Co., ltd;
tin: electrolytic tin powder, 300 mesh, is available from the manufacturer of new materials with grinding powder (Beijing);
nickel: electrolytic nickel powder with 300 meshes is prepared by Guangdong Yuepeng fine chemical industry Co., ltd;
prealloying powder: the brand is Fe-P, the granularity is 200-300 meshes, and the manufacturer Jiangxi Yuean superfine metal Co., ltd;
diamond powder: the diamond powder is ZND2160 grade diamond, the granularity of the diamond is 45-50 meshes, and the manufacturer is Zhongnan diamond Co.
Example 1: the utility model provides a sandwich type diamond saw blade, referring to fig. 1 and 2, including disc shape's base member 1 and two sets of cutter heads 2 of sintering on base member 1, two sets of cutter heads 2 are left tool bit 21 and right tool bit 22 respectively, and two sets of cutter heads 2 are located two surfaces of base member 1 respectively, are equipped with a plurality of outstanding sandwich bodies 3 on the outer peripheral face of base member 1, and a plurality of sandwich bodies 3 are around the centre of a circle evenly distributed of base member 1. Two sets of cutting bits 2 are symmetrically arranged on two sides of the sandwich body 3 so as to form a sandwich type saw blade, the toughness of the material adopted by the sandwich body 3 relative to the cutting bits 2 is lower, the texture of the sandwich body 3 is harder, and the sandwich body 3 is more brittle relative to the cutting bits 2. So the saw bit is when cutting the material, after cutting tool bit 2 receives wearing and tearing, expose sandwich body 3, sandwich body 3 and material contact's in the twinkling of an eye, sandwich body 3 can produce the fracture because of high-speed collision, and because the impact dynamics is great, then the fracture department of sandwich body 3 can be less than cutting tool bit 2's highest point, so the fracture of sandwich body 3 can make the around of saw bit constitute the concave structure of middle low both sides height, the convex structure of middle high both sides low that forms after the wearing and tearing of conventional saw bit, can not produce the cutting skew, have the advantage that the sharp rate is higher, thereby can provide the quality of cutting the material.
The base body 1 comprises an inner layer 11 and an outer layer 12 welded on two surfaces of the inner layer 11, a plurality of bulges integrally formed are arranged on the peripheral surface of the inner layer 11, the bulges are uniformly distributed around the circle center of the inner layer 11, and the maximum outer diameter of the bulges protruding out of the outer layer 12 forms a sandwich body 3, so that the sandwich body 3 and the inner layer 11 are integrally formed, and the base body 1 is convenient to manufacture.
Referring to fig. 1 and 3, the number of each group of cutting bits 2 is 4, and the cutting bits 2 are fan-shaped, after 4 cutting bits 2 head-to-tail connection, can constitute the shape of ring, the width of cutting bits 2 is the same with the length of sandwich 3, when the centre of a circle that 4 cutting bits 2 end-to-end connection formed is the same with the centre of a circle of base member 1, the internal diameter of cutting bits 2 is the same with the external diameter of base member 1, cutting bits 2 are located in the both sides of sandwich 3, the connection of cutting bits 2 and base member 1 is the mode of sintering, then cutting bits 2 will produce when sintering melts, melt cutting bits 2 and wrap up sandwich 3 and form an organic whole, but sandwich 3 is independent distribution in cutting bits 2's inside for cutting bits 2, so the saw bit when cutting work, sandwich 3 also can produce the fracture more easily.
Referring to fig. 1 and 3, through holes 13 are formed at the centers of the circles of the inner layer 11 and the outer layer 12, so that the inner layer 11 and the outer layer 12 can be conveniently mounted on a tool for welding. A plurality of mounting holes 14 are formed in the inner layer 11 and the outer layer 12, and the mounting holes 14 are uniformly arranged near the periphery of the outer layer 12; the fixed tool bit 15 can be put into to the mounting hole 14, and the two outer 12 surfaces that keep away from each other of both ends protrusion of fixed tool bit 15, during the sintering, fixed tool bit 15 also can melt, and fixed tool bit 15 and cutting tool bit 2 melt into an organic wholely, but fixed tool bit 15 is mostly in the mounting hole 14 on the base member 1, consequently fixed tool bit 15 can improve the connectivity between cutting tool bit 2 and the base member 1, improves the quality of saw bit.
Referring to fig. 4, the saw blade is generally assembled by using a sintering mold 4, and the sintering mold 4 generally includes a center column 41, a lower die plate 42 and an upper die plate 43 sleeved on the center column 41, the lower die plate 42 and the upper die plate 43 are correspondingly arranged, and a plurality of groups of lower die plates 42 and upper die plates 43 can be sleeved on each center column 41. During sintering, the lower template 42 is sleeved on the central column 41, then a group of cutting heads 2 are installed on the lower template 42 in a tail connection mode, then the base body 1 is sleeved on the central column 41, then another group of cutting heads 2 are installed, finally the upper template 43 is sleeved on the central column 41, and the cutting heads 2 and the base body 1 are wrapped and fixed by the lower template 42 and the upper template 43, and sintering is carried out, so that the saw blade can be manufactured.
Referring to fig. 5 and 6, one side of the left cutter head 21 is provided with a plurality of positioning blocks 211, in this embodiment, four are taken as an example, wherein 2 positioning blocks 21 are close to an inner arc, 2 positioning blocks 21 are close to an outer arc, the positioning blocks 211 are uniformly distributed on the surface of the cutter head 2 facing away from the inner layer 11, the positioning blocks 211 are irregularly shaped, and the positioning blocks 211 are matched with patterns on the sintering mold 4 in shape, so that the positioning blocks 211 can be clamped into the patterns on the sintering mold 4, the left cutter head 21 can be positioned during installation, and the cutter head 2 can be accurately installed on the sintering mold 4.
Referring to fig. 6, a plurality of positioning columns 221 are fixedly connected to the right cutter head 22, taking one right cutter head 22 provided with 3 positioning columns 221 as an example, the 3 positioning columns 221 are uniformly distributed along one side of the right cutter head 22 close to the inner diameter, and when the inner layer 11 is further provided with a plurality of positioning holes 111, and the 4 right cutter heads 22 are connected end to form a circular ring, the positioning columns 221 on the right cutter head 22 are respectively inserted into the positioning holes 111, so that the cutter head 2 can be accurately positioned during installation, the cutter head 2 cannot deviate, and the influence on the quality of a saw blade is avoided.
Referring to fig. 6 and 7, when the substrate 1 is welded, the spot welding fixture 5 is used, the spot welding fixture 5 is also in a disc shape, three welding rings are arranged on the spot welding fixture 5, the centers of the three welding rings and the spot welding fixture 5 are overlapped, the three welding rings are concentric rings, the three welding rings are respectively an inner welding ring 51, a middle welding ring 52 and an outer welding ring 53, the number of the welding holes 511 on the inner welding ring 51 and the middle welding ring 52 is multiple, the welding holes 511 on the inner welding ring 51 and the middle welding ring 52 are uniformly distributed around the center of the spot welding fixture 5, the outer welding ring 53 is provided with six welding holes 511, the six welding holes 511 are uniformly distributed around the center of the spot welding fixture 5, and the number of the welding holes 511 of each outer welding ring 53 is two.
The spot welding fixture 5 is provided with three special-shaped blocks 54 and a cylinder 55, the outer layer 12 and the inner layer 11 are provided with round holes 121 for the cylinder 55 to be inserted, the special-shaped blocks 54 can enter the mounting holes 14, so that two different positioning pieces are used for positioning the installation of the spot welding fixture 5, the spot welding fixture 5 cannot rotate, and then the accurate installation of the spot welding fixture 5 is realized, and a welding tool is used on the substrate 1.
The production process of the sandwich type diamond saw blade comprises the following steps:
the outer layer 12 and the inner layer 11 are prepared: cutting a steel belt to form a disc shape to obtain two outer layers 12 and an inner layer 11, punching through holes 13 and round holes 121 on the inner layer 11 and the outer layer 12, punching mounting holes 14 on the outer layer 12, and cutting the outer layer 12 to obtain a sandwich body 3, wherein the thicknesses of the outer layer 12 and the inner layer 11 are 0.6mm;
substrate 1 treatment: spraying a release agent on one side of the two outer layers 12, wherein the spraying thickness of the release agent is 0.3mm, and the release agent is not sprayed in 50mm around the mounting holes 14 on the outer layers 12 so as to prevent the fixed cutter head 15 from falling off when the fixed cutter head 15 is placed; then, inserting one of the circular holes 121 on the outer layer 12 into the cylinder 55 of the spot welding fixture, mutually clamping the mounting hole 14 on the outer layer 12 with the three special-shaped blocks 54 on the spot welding fixture 5, clamping the outer layer 12 on the spot welding fixture 5, and clamping one side of the outer layer 12 sprayed with the release agent far away from the spot welding fixture 5, then inserting one of the circular holes 121 on the inner layer 11 into the cylinder 55, mutually clamping the mounting hole 14 on the inner layer 11 with the special-shaped blocks 54 on the spot welding fixture 5, mutually matching and clamping the mounting hole 14 on the other outer layer 12 with the special-shaped blocks 54 on the spot welding fixture 5, mutually inserting the circular hole 121 into the cylinder 55, clamping one side of the outer layer 12 sprayed with the release agent on the spot welding fixture 5 near the inner layer 11, clamping the outer layer 11 in sequence, and then clamping the outer layer 12 behind the inner layer 11 without dislocation, wherein if the substrate 1 is deformed, the first spot welding point is to control the substrate 1 and the spot welding fixture 5 to be completely in place as much as possible;
spot welding: placing the processed substrate 1 on a spot welder, adjusting the distance, firstly, spot-welding a spot through one welding hole 511 of an inner welding ring 53, then removing a spot welding fixture 5, performing symmetrical spot welding, spot-welding 4 spots together, then spot-welding 4 spots according to the positions of a middle welding ring 52, arranging the 4 spots of the middle welding ring 52 and the 4 spots of the inner welding ring 51 in a staggered manner, then installing the spot welding fixture 5, adjusting the spot welding distance, sequentially performing spot welding according to the positions of an outer welding ring 53, and spot-welding all the welding holes 511 on the outer welding ring 53.
The cutting bit 2 and the fixed bit 15 are pressed and formed: mixing the matrix and the diamond powder, and pressing to form according to the shapes of the cutting bit 2 and the fixed bit 15, wherein the cutting bit 2 and the fixed bit 15 comprise the matrix and the diamond powder, and the matrix comprises the following components in percentage: 20% copper, 15% iron, 8% tin, 10% nickel, 47% prealloyed powder, the concentration of diamond powder in the matrix being 0.55cts/cm 3 The pressure of the compression molding is 100 tons and the time is 2s;
and (3) assembling: the lower die plate 42 is sleeved on the central column 41, then the four left tool bits 21 are connected end to form a circular ring shape, the positioning block 211 on one side of the left tool bit 21 faces downwards and is placed on the lower die plate 42 of the sintering die 4, and the positioning block 211 is matched with patterns on the lower die plate 42; the distance between the inner ring of the left cutter head 21 and the inner ring of the sintering mold 4 is kept consistent, and the four left cutter heads 21 are tightly connected; then the through hole 13 on the base body 1 is sleeved on the central column 41, the base body 1 is placed on the left cutter head 21, then the fixed cutter head 15 is placed in the four mounting holes 14 of the base body 1, then the four right cutter heads 22 which can form a circular ring shape through head-to-tail connection are placed on the sandwich body 3, the positioning column 221 on the right cutter head 22 is matched with the positioning hole 111 on the outer layer 12, finally the upper template 43 is sleeved on the central column 41, and the base body 1, the cutting cutter head 2 and the fixed cutter head 15 are fixed by the upper template 43 and the lower template 42;
sintering: placing the assembled substrate 1 and the sintering molds 4 layer by layer, enabling the circle centers of the plurality of sintering molds 4 to be on the central column 41, preventing the fixed cutter head 15 from being moved after being placed, performing pressure sintering on the sintering molds 4 placed layer by layer, wherein the sintering pressure is 45KN, the sintering temperature is 820 ℃, starting to pressurize after the temperature is raised for 45 minutes, performing pressure maintaining on the final 45KN after the step-up stages of 10KN and 20KN, and taking out after the total sintering time is 130 minutes and natural cooling for 10 hours.
The diamond saw blade with the tooth width of 20mm, the commercially available diamond saw blade with the tooth width of 7mm (Suzhou cover hardware, the inner diameter of 22.2mm and the outer diameter of 125 mm) and the commercially available diamond saw blade with the tooth width of 10mm (Xingta XTD, the outer diameter of 110mm and the inner diameter of 20 mm) which are prepared in example 1 are tested for the breaking strength of the saw blade according to GB/T5319-2002 'determination of the transverse breaking strength of sintered metal materials'; then, a milling test was performed on granite having a Mohs hardness of 6, in which the size was 600mm by 600mm and the depth was 10mm, and the noise decibels generated were recorded, and the results are shown in Table 1, and 4 samples were examined.
Table 1 performance test of sandwich diamond saw blade
As can be seen from the data in Table 1, the sandwich type diamond saw blade prepared by the application has strong bending strength, good safety and good silencing effect.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (10)
1. A sandwich type diamond saw blade, comprising a disc-shaped substrate (1) and a cutting bit (2) sintered on the substrate (1), characterized in that: the substrate (1) comprises an inner layer (11), and outer layers (12) welded on two sides of the inner layer (11), wherein the diameters of the outer layers (12) and the inner layers (11) are the same;
the outer peripheral surface of the inner layer (11) is provided with a plurality of bulges which are integrally formed, the bulges are uniformly distributed around the circle center of the inner layer (11), and the bulges protrude out of the outer peripheral surface of the matrix (1) to form a sandwich body (3);
the cutting tool bit (2) has two sets of, is located the both sides of sandwich body (3) respectively, and every cutting tool bit (2) quantity of group is a plurality of, and every cutting tool bit (2) of group constitutes circular structure and places on the surface of sandwich body (3).
2. A sandwich diamond saw blade according to claim 1, wherein: the inner layer (11) and the outer layer (12) are provided with a plurality of mounting holes (14), and the mounting holes (14) are uniformly distributed on the inner layer (11) and the outer layer (12) in a ring shape;
the inner layer (11) and the outer layer (12) are provided with mounting holes (14), the mounting holes (14) are close to the edge of the outer layer (12), the mounting holes (14) are internally provided with fixed cutter heads (15), the fixed cutter heads (15) protrude out of the surfaces of the two outer layers (12) away from each other, and the cutting cutter heads (2) and the fixed cutter heads (15) can be melted into a whole during sintering.
3. A process for producing a sandwich diamond saw blade according to any one of claims 1-2, comprising the steps of:
substrate (1) treatment: spraying release agents on one side of the two outer layers (12), and clamping the inner layers (11) between the two outer layers (12) with one side of the release agents facing the inner layers (11);
spot welding: welding the outer layer (12) and the inner layer (11) together by spot welding to manufacture the substrate (1);
and (3) assembling: assembling the cutter head (2) and the matrix (1) on a sintering die (4); firstly, placing a cutting tool bit (2) on a sintering mold (4), then placing a substrate (1) on the cutting tool bit (2), placing a fixed tool bit (15) in a mounting hole (14), placing another group of cutting tool bits (2) on a sandwich body (3), and finally placing the sintering mold (4) on the cutting tool bit (2), wherein the two groups of cutting tool bits (2) are all in a circular ring shape, and the two groups of cutting tool bits (2) clamp the sandwich body (3);
sintering: sintering the assembled matrix (1) to prepare the sandwich diamond saw blade.
4. A process for producing a sandwich diamond saw blade according to claim 3, characterized in that the substrate (1) is treated without spraying a release agent within 50-100mm around the mounting hole (14).
5. A process for producing a sandwich type diamond saw blade according to claim 3, wherein the release agent spraying thickness is 0.2-0.3mm.
6. A process for producing a sandwich-type diamond saw blade according to claim 3, wherein the distance between the inner ring of the cutting bit (2) and the inner ring of the sintering mold (4) is the same during the molding.
7. A process for manufacturing a sandwich diamond saw blade according to claim 3, characterized in that during the welding, the inner layer (11) and the two outer layers (12) are fixed by using a spot welding fixture (5), the spot welding fixture (5) is disc-shaped, the diameter is the same as that of the base body (1), a special-shaped block (54) is fixed on the spot welding fixture (5), and when the center of the spot welding fixture (5) is coincident with the center of the base body (1), the special-shaped block (54) can be inserted into the mounting hole (14).
8. The process for producing the sandwich-type diamond saw blade according to claim 7, wherein a plurality of special-shaped blocks (54) are arranged, and when the circle center of the spot welding fixture (5) is coincident with the circle center of the base body (1), the special-shaped blocks (54) can be correspondingly inserted into the mounting holes (14).
9. A process for manufacturing a sandwich diamond saw blade according to claim 3, characterized in that the assembled substrates (1) are placed layer by layer during sintering, so that the centers of the assembled substrates (1) are on the same vertical line and cannot be moved after being placed.
10. Production of a sandwich diamond saw blade according to claim 3The process is characterized in that the cutting tool bit (2) and the fixed tool bit (15) both comprise a matrix and diamond powder, and the matrix comprises the following components in percentage: 20-30% of copper, 10-15% of iron, 8-10% of tin, 8-10% of nickel and 10-50% of prealloy powder, wherein the concentration of diamond powder in a matrix is 0.55-0.72cts/cm 3 。
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| CN202311049880.7A CN116967530B (en) | 2023-08-18 | 2023-08-18 | Sandwich type diamond saw blade and production process thereof |
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| CA2010229A1 (en) * | 1989-02-16 | 1990-08-16 | Manfred Fuerst | Circular saw blade |
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| US20080251061A1 (en) * | 2005-06-27 | 2008-10-16 | Anthony Baratta | Tools and Methods for Making and Using Tools, Blades and Methods of Making and Using Blades |
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| WO2017031091A1 (en) * | 2015-08-14 | 2017-02-23 | Western Saw Manufacturers, Inc. | Blade with removable working surfaces and methods of making and using |
| EP3659748A1 (en) * | 2018-11-28 | 2020-06-03 | Tyrolit - Schleifmittelwerke Swarovski K.G. | Carrier body for a grinding or a cutting tool |
| CN217096122U (en) * | 2021-11-30 | 2022-08-02 | 黑旋风锯业股份有限公司 | General type saw bit welded spot welding anchor clamps |
| CN217618157U (en) * | 2022-03-02 | 2022-10-21 | 丹阳市优锐特工具有限公司 | Hard coating alloy circular saw blade |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2010229A1 (en) * | 1989-02-16 | 1990-08-16 | Manfred Fuerst | Circular saw blade |
| CN2728690Y (en) * | 2004-10-22 | 2005-09-28 | 郑州人造金刚石及制品工程技术研究中心 | Diamond saw bit having base |
| US20080251061A1 (en) * | 2005-06-27 | 2008-10-16 | Anthony Baratta | Tools and Methods for Making and Using Tools, Blades and Methods of Making and Using Blades |
| CN101791788A (en) * | 2009-11-17 | 2010-08-04 | 博深工具股份有限公司 | Preparation method of cold pressing sintered diamond millstone |
| WO2017031091A1 (en) * | 2015-08-14 | 2017-02-23 | Western Saw Manufacturers, Inc. | Blade with removable working surfaces and methods of making and using |
| EP3659748A1 (en) * | 2018-11-28 | 2020-06-03 | Tyrolit - Schleifmittelwerke Swarovski K.G. | Carrier body for a grinding or a cutting tool |
| CN217096122U (en) * | 2021-11-30 | 2022-08-02 | 黑旋风锯业股份有限公司 | General type saw bit welded spot welding anchor clamps |
| CN217618157U (en) * | 2022-03-02 | 2022-10-21 | 丹阳市优锐特工具有限公司 | Hard coating alloy circular saw blade |
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| CN116967530B (en) | 2024-02-13 |
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