CN111136590A - Brazing diamond grinding tool suitable for casting flash grinding and preparation method thereof - Google Patents
Brazing diamond grinding tool suitable for casting flash grinding and preparation method thereof Download PDFInfo
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- CN111136590A CN111136590A CN202010129257.2A CN202010129257A CN111136590A CN 111136590 A CN111136590 A CN 111136590A CN 202010129257 A CN202010129257 A CN 202010129257A CN 111136590 A CN111136590 A CN 111136590A
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- 238000000227 grinding Methods 0.000 title claims abstract description 300
- 239000010432 diamond Substances 0.000 title claims abstract description 143
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 132
- 238000005266 casting Methods 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000005219 brazing Methods 0.000 title claims description 36
- 239000000463 material Substances 0.000 claims abstract description 78
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000005498 polishing Methods 0.000 claims description 102
- 239000003082 abrasive agent Substances 0.000 claims description 36
- 239000010931 gold Substances 0.000 claims description 35
- 229910052737 gold Inorganic materials 0.000 claims description 35
- 239000000758 substrate Substances 0.000 claims description 32
- 239000002245 particle Substances 0.000 claims description 20
- 238000005457 optimization Methods 0.000 claims description 16
- 229910000679 solder Inorganic materials 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000005488 sandblasting Methods 0.000 claims description 5
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 5
- 229910000676 Si alloy Inorganic materials 0.000 claims description 3
- BSMMBXUTABQWBT-UHFFFAOYSA-N [B].[Si].[Ni].[Cr].[Cu] Chemical group [B].[Si].[Ni].[Cr].[Cu] BSMMBXUTABQWBT-UHFFFAOYSA-N 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000011347 resin Substances 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 10
- 238000011161 development Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000006061 abrasive grain Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 230000035943 smell Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
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- 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
- B24D7/02—Wheels in one piece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention belongs to the technical field of casting flash grinding application, and particularly discloses a brazed diamond grinding tool suitable for casting flash grinding and a preparation method thereof. The invention has the beneficial effects that: 1. the grinding wheel has the characteristics of high grinding efficiency, light hand feeling, small vibration, no odor, long service life, attractive appearance and the like, different grades of grinding materials are selected according to actual conditions, the cost is optimized, the grinding wheel is more economical, the traditional resin grinding wheel is perfectly replaced, the grinding wheel is the development direction of the casting grinding wheel in the casting manufacturing industry, and the grinding wheel has great market potential; 2. the preparation method has simple process and convenient operation, and can simply realize the ordered and cluster arrangement of the diamond grinding materials.
Description
Technical Field
The invention belongs to the technical field of casting flash grinding application, and particularly relates to a brazed diamond grinding tool suitable for casting flash grinding and a preparation method thereof.
Background
At present, the conventional polishing method of the casting flash is that a polisher performs manual polishing by using a manual grinder provided with a resin grinding wheel. Because the resin grinding wheel is manufactured by solidifying the silicon carbide abrasive and the corundum abrasive into a disc shape by utilizing the principle of resin curing, the bonding strength is low, and the defects of easy consumption of the grinding disc, large sparks, large smell, large dust and the like can be caused in the grinding process. The resin grinding wheel is impacted too much when meeting cast iron flashes in the grinding process, so that grinding materials fall off while grinding, and resin is softened, melted and volatilized due to low exposure height and high grinding surface temperature of the grinding materials, so that toxic and pungent smells are emitted. In addition, the grinding disc is not ideal in sharpness due to low abrasive exposure, the grinding efficiency is low, and the grinding workload of the casting accounts for about one fourth of the whole manufacturing workload of the casting.
Due to the defects and the requirement of the casting manufacturing industry on cost control, a novel polishing disc needs to be developed to replace the traditional polishing disc so as to achieve the purposes of high grinding efficiency, long service life, no pollution and the like.
At present, three main combination modes of electroplating, sintering, brazing and the like exist in the diamond polycrystalline consolidation technology. Through comparing the three combination modes, the abrasive material in the sintering technology and the electroplating technology is exposed to the bottom of the height, the tire body has low holding strength to the abrasive material, the sharpness is not ideal, the chip removal effect is poor, and the requirement of polishing the casting flash is proved to be difficult to meet. The brazing technology is characterized in that the polycrystalline diamond and the substrate are welded together by melting the solder, the solder and the abrasive are chemically and metallurgically bonded before, and the welding strength of the abrasive is high, so that the abrasive has high exposure and sharp grinding, and the technology is an ideal technology for manufacturing the cast flash. Diamond is currently the hardest substance compared to other abrasives; the grinding performance is good; the diamond grinding wheel has small specific heat and large heat conductivity, so that the temperature is easy to rise and the heat is easy to dissipate, and the diamond is an ideal material for grinding metal. Compared with the traditional resin grinding wheel, the brazing diamond tool has the characteristics of environmental protection because the abrasive material can not fall off basically in the using process, no resin is melted and volatilized, and no pungent smell is generated because of safety in the using process. The method is consistent with the current low-carbon and environment-friendly development concept.
Currently, the brazing technology is used for welding diamond on a steel substrate to prepare brazed diamond tools, and the brazed diamond tools are partially applied to practical production, such as high-iron Boger plate grinding wheels, brazed diamond drill bits and the like. But no relevant reports and patents appear at present for the diamond tool for professional grinding of cast flash. The existing brazing diamond grinding tools are few in types, are more used for grinding stone materials, have different manufacturing processes, base body shapes and grinding equipment, and cannot be applied to casting grinding.
And the conventional brazing grinding disc is mostly made by disorderly arranging a certain amount of diamonds on the surface of the grinding disc matrix and then brazing at high temperature. The abrasive material on the surface of the grinding disc is difficult to be uniformly distributed due to process limitation, and the landform optimization is not carried out according to the actual appearance of the grinding disc, so that the consumption of diamond is wasted, and the grinding efficiency and the service life of the grinding disc are restricted.
The abrasive material arranging technology has been partially applied to brazing and electroplating products, and is practically applied to the production technology of a porous template method, a vacuum adsorption method and a cluster arranging method. The hole template method is to distribute abrasive material orderly by using a hole template made of special material, and the principle is to open sequential small holes on a substrate, each hole accommodates a diamond, and then the diamonds arranged in sequence are adhered to the surface of the substrate by using related processes. The method is mostly used for preparing sintered diamond tools, such as saw blade tips, and can only be used for plane surfaces and a few simple geometric shapes at present. The vacuum adsorption method is that a template with small holes has adsorption capacity to adsorb diamond by using the principle of vacuumizing, and then the template is placed on the surface of a substrate, and the method is similar to the hole template method, and only some relatively simple geometric surfaces can be prepared, and the two methods do not distribute the abrasive materials orderly according to the service performance of the workpiece at present. The third cluster-shaped arrangement method is to use a template with a certain geometric shape to distribute the diamond abrasive in the gaps of the template, and then to scatter the template after the diamond abrasive is distributed. The method is mostly seen in electroplated diamond products, and the template is simple to manufacture and is widely applied to the electroplated products, but the method only can achieve ordered macroscopic shapes, the arrangement of the diamond abrasives in each gap is still disordered and cannot achieve ordered arrangement, and the advantages of the diamond abrasives are difficult to effectively exert.
Therefore, based on the problems, the invention provides a brazed diamond grinding tool suitable for grinding cast flashing and a preparation method thereof.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a brazed diamond grinding tool suitable for casting flash grinding and a preparation method thereof.
The technical scheme is as follows: the invention provides a brazed diamond grinding tool suitable for casting flash grinding, which comprises an outer end of a grinding disc, an inclined plane of the grinding disc, a plane top end of the grinding disc, positioning holes arranged in the grinding disc, and diamond poly-gold grinding materials uniformly distributed and brazed on the outer end of the grinding disc, the inclined plane of the grinding disc and the plane top end surface of the grinding disc, wherein the diamond poly-gold grinding materials on the outer end edge of the grinding disc are orderly and densely arranged, the diamond poly-gold grinding materials on the inclined plane of the grinding disc are single and are orderly and equidistantly distributed along the radial direction of the grinding disc, the diamond poly-gold grinding materials on the plane top end surface of the grinding disc are arranged in a cluster grinding material turbine shape, and the bottom of the grinding disc is of a concave structure and is used for chip; the outer end of the polishing disc, the inclined plane of the polishing disc, the top end of the plane of the polishing disc and the whole polishing disc are of a disc-shaped structure.
According to the technical scheme, the width of the top end of the plane of the grinding disc accounts for 1/3-1/2 of the radius of the grinding disc, and the width of the inclined plane of the grinding disc is 3-5 mm.
According to the technical scheme, the outer diameter of the polishing disc substrate of the brazed diamond polycrystalline casting with the disc-shaped structure is 100mm-180mm, and the thickness of the substrate is 1.4mm-4.5 mm.
According to the technical scheme, the included angle theta between the inclined plane of the polishing disc and the horizontal direction is 5-15 degrees.
According to the technical scheme, the diamond poly-gold abrasive is brazed at the outer end of the polishing disc, the inclined surface of the polishing disc and the top surface of the plane of the polishing disc, the solder is nickel-copper-chromium-boron-silicon alloy, and the brazing mode is vacuum brazing.
According to the technical scheme, the diamond poly-gold abrasive material on the outer edge of the polishing disc is a high-grade abrasive material for drilling and cutting which is orderly and densely arranged, the granularity is 10-50 meshes, the transverse distance between two adjacent diamond poly-gold abrasive materials is 2d-4d, the longitudinal distance between two adjacent diamond poly-gold abrasive materials is 2d-5d, and d is the maximum grain size of the diamond poly-gold abrasive material.
According to the technical scheme, the diamond gold-gathered grinding materials on the inclined surface of the grinding disc are the same in quantity in the radial direction of the grinding disc.
According to the technical scheme, the diamond poly-gold abrasive on the plane top end of the polishing disc is a medium-grade turbine-shaped cluster-shaped abrasive for grinding, the granularity is 10-50 meshes, and each cluster of the diamond poly-gold abrasive is 3-8 diamond poly-gold abrasives.
In another aspect of the invention, a method for preparing a brazed diamond grinding tool suitable for grinding casting flash comprises the following steps: (1) polishing and punching the outer diameter of the disc substrate; (2) polishing the outer edge of the disc substrate to chamfer; (3) carrying out sand blasting treatment on the surface of the polishing disc substrate, and carrying out ultrasonic cleaning; (4) coating a binder on the surface of the cleaned and dried substrate, wherein the binder is used for binding diamond abrasive particles and solder; (5) sequentially carrying out abrasive material arrangement on the top end of the plane of the polishing disc, the inclined plane of the polishing disc and the edge of the outer edge of the polishing disc; (6) and after the arrangement of the grinding materials is finished, adding brazing solder and carrying out vacuum brazing to prepare the diamond grinding disc for casting polishing.
This technical scheme, the dish plane top of polishing, the dish inclined plane of polishing and the dish outer edge of polishing carry out the abrasive material and arrange and all accomplish through following step: (1) placing a prefabricated orderly-arranged template designed according to landform optimization on the surface of a substrate; (2) arranging diamond grinding materials, wherein the diamond grinding materials are distributed in the cavity area of the template, so that the morphology designed according to landform optimization is obtained; the top end of the plane of the polishing disc obtains a swirl-arranged cluster-shaped ordered landform; the edge of the outer end of the polishing disc obtains ordered and densely arranged landforms; the grinding disc inclined plane obtains a landform with single abrasive particles orderly arranged and the same radial number; (3) and removing the orderly arranged template to obtain the optimal arranged surface morphology of the diamond according to the landform.
Compared with the prior art, the brazing diamond grinding tool suitable for casting flash grinding and the preparation method thereof have the beneficial effects that: 1. the grinding wheel has the characteristics of high grinding efficiency, light hand feeling, small vibration, no odor, long service life, attractive appearance and the like, different grades of grinding materials are selected according to actual conditions, the cost is optimized, the grinding wheel is more economical, the traditional resin grinding wheel is perfectly replaced, the grinding wheel is the development direction of the casting grinding wheel in the casting manufacturing industry, and the grinding wheel has great market potential; 2. the preparation method has simple process and convenient operation, and can simply realize the ordered and cluster arrangement of the diamond grinding materials.
Drawings
FIG. 1 is a schematic cross-sectional view of a brazed diamond abrasive article suitable for casting flash grinding in accordance with the present invention;
FIG. 2 is a schematic diagram of the abrasive arrangement of the outer edge of the grinding disk of a brazed diamond abrasive tool suitable for casting flash grinding according to the present invention;
FIG. 3 is a schematic diagram of the arrangement of the top planar abrasive of the grinding disc of the brazed diamond grinding tool suitable for casting flash grinding according to the present invention.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
As shown in fig. 1, 2 and 3, the brazed diamond grinding tool suitable for casting flash grinding comprises an outer end 1 of a grinding disc, an inclined plane 2 of the grinding disc, a plane top end 3 of the grinding disc, a grinding disc 4, a positioning hole 5 arranged in the grinding disc 4, and diamond poly-gold grinding materials 6 uniformly distributed and brazed on the outer end 1 of the grinding disc, the inclined plane 2 of the grinding disc and the plane top end 3 of the grinding disc, wherein the diamond poly-gold grinding materials 6 on the edge of the outer end 1 of the grinding disc are orderly and densely arranged, the diamond poly-gold grinding materials 6 on the inclined plane 2 of the grinding disc are single and are orderly and equidistantly distributed along the radial direction of the grinding disc, the diamond poly-gold grinding materials 6 on the surface of the plane top end 3 of the grinding disc are in a cluster-shaped grinding wheel shape, and the bottom of the grinding disc 4 is in a concave structure and; the outer end 1 of the polishing disc, the inclined plane 2 of the polishing disc, the plane top end 3 of the polishing disc and the polishing disc 4 are integrally of a disc-shaped structure.
Further preferably, the width of the top end 3 of the plane of the grinding disc accounts for 1/3-1/2 of the radius of the grinding disc, and the width of the inclined plane 2 of the grinding disc is 3-5 mm; the outer diameter of the polishing disc substrate of the polycrystalline casting of the brazed diamond with the disc-shaped structure is 100mm-180mm, and the thickness of the substrate is 1.4mm-4.5 mm; and the included angle theta between the inclined plane 2 of the polishing disc and the horizontal direction is 5-15 degrees; the diamond poly-gold abrasive 6 is brazed on the outer end 1 of the polishing disc, the inclined plane 2 of the polishing disc and the surface of the top end 3 of the plane of the polishing disc, the solder is nickel-copper-chromium-boron-silicon alloy, and the brazing mode is vacuum brazing; the diamond poly-gold grinding materials 6 at the edge of the outer end 1 of the polishing disc are orderly and densely arranged high-grade grinding materials for drilling and cutting, the granularity is 10-50 meshes, the transverse distance between every two adjacent diamond poly-gold grinding materials 6 is 2d-4d, the longitudinal distance between every two adjacent diamond poly-gold grinding materials 6 is 2d-5d, and d is the maximum grain diameter of the diamond poly-gold grinding materials 6; and the diamond gold-gathered grinding materials 6 on the inclined surface 2 of the grinding disc are the same in number in the radial direction of the grinding disc; and the diamond poly-gold grinding material 6 on the plane of the top end 3 of the plane of the polishing disc is a medium-grade turbine-shaped cluster grinding material, the granularity is 10-50 meshes, and each cluster of 3-8 diamond poly-gold grinding materials 6.
The invention relates to a preparation method of a brazed diamond grinding tool suitable for casting flash grinding, which comprises the following steps: (1) polishing and punching the outer diameter of the disc substrate; (2) polishing the outer edge of the disc substrate to chamfer; (3) carrying out sand blasting treatment on the surface of the polishing disc substrate, and carrying out ultrasonic cleaning; (4) coating a binder on the surface of the cleaned and dried substrate, wherein the binder is used for binding diamond abrasive particles and solder; (5) sequentially carrying out abrasive material arrangement on the top end of the plane of the polishing disc, the inclined plane of the polishing disc and the edge of the outer edge of the polishing disc; (6) and after the arrangement of the grinding materials is finished, adding brazing solder and carrying out vacuum brazing to prepare the diamond grinding disc for casting polishing.
Further preferably, the abrasive material arrangement of the top end of the plane of the polishing disc, the inclined plane of the polishing disc and the edge of the outer end of the polishing disc is completed through the following steps: (1) placing a prefabricated orderly-arranged template designed according to landform optimization on the surface of a substrate; (2) arranging diamond grinding materials, wherein the diamond grinding materials are distributed in the cavity area of the template, so that the morphology designed according to landform optimization is obtained; the top end of the plane of the polishing disc obtains a swirl-arranged cluster-shaped ordered landform; the edge of the outer end of the polishing disc obtains ordered and densely arranged landforms; the grinding disc inclined plane obtains a landform with single abrasive particles orderly arranged and the same radial number; (3) and removing the orderly arranged template to obtain the optimal arranged surface morphology of the diamond according to the landform.
According to the brazing diamond grinding tool suitable for grinding the casting flashes, the abrasive material (diamond poly-gold abrasive material 6) distribution of a grinding disc (the outer end 1 of the grinding disc, the inclined plane 2 of the grinding disc, the plane top end 3 of the grinding disc and the grinding disc 4) is determined according to the working condition of the grinding disc and the appearance of the grinding disc. The grinding disc rotates at a high speed along the central shaft of the grinding disc during working and can move in any direction and at a specific angle, so that the grinding motion of the grinding disc is very complex, and the distribution of the grinding materials on the grinding disc of the polycrystalline casting of the brazed diamond is determined and the landform is optimized according to the state reverse analysis of the practical application of the grinding disc.
(1) Optimization of landform arrangement of abrasive material at outer edge of polishing disc
In the use process of the grinding disc, the outer end edge of the grinding disc rotates at a high speed and advances forwards, so that the outer end of the grinding disc is stressed maximally, the diamond brazing strength is required to be higher, the borne load is larger, the movement of the outer end of the grinding disc can be regarded as the movement of cutting and grinding at the same time, therefore, in order to reduce the outer end load, the density of the grinding materials at the outer end of the grinding disc is required to be as high as possible under the condition that a chip removal space is ensured, and the outer end of the grinding disc is required to be arranged in order, as shown in fig.
According to the analysis of the load and the motion trail of the grinding disc, the grinding material at the position is large-grain and high-grade grinding material for drilling and cutting. The abrasive grain size range is 10-50 meshes, and the grain size of 35-40 meshes is preferably used through tests. The transverse distance between two adjacent abrasive particles is 2d-4d, the longitudinal distance between two adjacent abrasive particles is 2d-5d, and d is the maximum grain size of the abrasive.
(2) Landform optimization of abrasive arrangement on inclined surface of polishing disc
Because operating personnel often can keep certain contained angle with the plane of polishing when using the polisher for the polishing dish can obtain a forward thrust and surely grinds protruding foundry goods overlap, can guarantee moreover that the polishing dish can discharge the abrasive dust through the inclined plane at the abrasive disc edge when polishing foundry goods overlap, and make the polishing dish have certain adaptability to the plane of polishing. Thus, the upper end of the grinding disc is composed of a plane and a slope with a certain inclination angle, and the slope angle theta (shown in figure 1) can be determined according to the principle of ergonomics and the appearance of the casting flash.
The grinding disc is characterized in that the outer end edge of the grinding disc is smaller due to bearing load, the grinding disc still needs to have grinding and chip removal effects, the inclined plane is required to have high grinding efficiency, long grinding service life, good heat dissipation effect and good chip removal effect, and in order to achieve the requirements, the method of orderly arranging the grinding materials is adopted, the grinding materials are arranged along the grinding disc in the radial direction, the specific arrangement mode is that in the radial direction of the grinding disc, single grinding materials are separated at equal intervals, and the quantity of the grinding material particles in the radial direction is the same. The grinding disc rotates at a high speed, so that in order to ensure the minimum vibration and the highest grinding efficiency, the quantity of the abrasive grains participating in grinding at the same time in the rotation direction is consistent, and the grinding stability is ensured. Furthermore, the ordered arrangement of the abrasive particles also improves the aesthetics of the sanding disc. According to the analysis of the load and the motion trail of the grinding disc, the grinding material is selected from medium-granularity and high-grade grinding materials.
In order to meet the requirements, the angle theta of the inclined plane is 5-15 degrees, when the grinding materials are distributed on the grinding disc along the radial direction, the distance range between every two adjacent abrasive particles along the radial direction of the grinding disc is 1.5-4 d, and the distance range between every two adjacent abrasive particles along the radial direction is 1.5-6 d. The abrasive particle size range is 10-50 meshes, and the particle size of 40-50 meshes is optimized and selected through tests.
(3) Optimization of landform of grinding disc top plane abrasive material arrangement
Because the motion of foundry goods polishing dish is cutting, grinding in fact and unites two into one motion, and the surface of polishing has certain precision's requirement, consequently cut the mill back at mill outer end and inclined plane, planar effect is the chip removal, further grinding, polishing surface of polishing, consequently in order to improve polishing precision and chip removal effect, the condition of arranging of the abrasive material of polishing dish top is shown in figure 3.
The grinding disc plane top end plane geomorphology optimization principle is an optimal result obtained by creatively performing geomorphology optimization according to casting burr grinding requirements, a grinding casting burr appearance, a grinding machine rotating speed and other working conditions.
The track formed by each cluster-shaped abrasive material can be a straight line, an arc, an involute, a parabola and the like. The distance between two adjacent track lines ranges from 3mm to 25 mm. According to the analysis of the load and the motion trail of the grinding disc, the grinding material is selected from medium-grade grinding materials with fine granularity. The top plane of the polishing disc is provided with clustered abrasives in a turbine shape, and the abrasives are not arranged at other parts. The granularity of the abrasive is 10-50 meshes, the granularity of 40-50 meshes is optimized and selected through tests, each cluster comprises 3-8 abrasive, and the cluster area range is 4mm2~ 12mm2。
The top end plane is arranged in a cluster shape, so that the chip removal space for plane polishing is improved, the heat dissipation space is ensured, and the polishing efficiency is also improved. The cluster-shaped diamonds on the top plane are arranged in a turbine shape, so that the stability of the polishing disc in high-speed rotation is ensured, because the cutting angles of all the cluster-shaped diamond belts are consistent, and the dynamic effective abrasive grain numbers at the same time are consistent.
The grade classification of the abrasive material related by the invention is the same as JB/GQ.F 6010-86 (quality standards of artificial diamond, cubic boron nitride products and the like).
Example one
The brazing diamond grinding tool suitable for grinding the casting flash is characterized in that the outer end of a grinding disc base body is chamfered, and the size of the fillet is matched with the thickness of the base body.
The arrangement of the abrasive of the brazed diamond grinding tool is as follows:
① the edge of the outer end of the grinding disc is made of medium flat diamond abrasive with the granularity of 35-40 meshes, the transverse distance between two adjacent abrasive grains is 2d, and the longitudinal distance is 2 d.
② the inclined plane of the grinding disc is made of high-grade diamond abrasive with a granularity of 40-50 meshes, the transverse distance between two abrasive grains along the radial direction is 1.5d, and the distance between two rows of abrasive grains distributed along the radial direction is 1.5 d.
③ the plane abrasive material at the top of the grinding disc is arranged in round clusters, the diameter of each cluster is 3mm, 10-15 medium-grade diamonds of 40-50 meshes are arranged in each cluster area, the trajectory line is an arc with the radius of 80, and 17 diamonds are arranged uniformly.
In the brazing diamond grinding tool suitable for grinding casting flashes, the preparation method of the brazing diamond polycrystalline casting grinding disc comprises the following steps:
(1) and (5) grinding the outer diameter of the disc substrate for stamping. The material of the base body of the polishing disc is 65Mn steel, the strength of the tool is guaranteed, and the thickness of the base body is 1.4 mm.
(2) And (3) chamfering the outer edge of the base body of the grinding disc, wherein the chamfer dimension r = 0.5.
(3) And (4) carrying out sand blasting treatment on the surface of the polishing disc substrate, and carrying out ultrasonic cleaning.
(4) And coating a binder on the surface of the cleaned and dried substrate, wherein the binder is used for binding the diamond abrasive particles and the solder. Wherein the adhesive is first applied at the top flat of the abrasive disk.
(5) The orderly arrangement template which is prefabricated according to the arrangement mode of the grinding disc abrasives and is designed according to landform optimization in the embodiment is arranged on the surface of the base body. The template material has good flexibility and can be bent, so that the template material can be tightly attached to the surface of the grinding disc.
(6) And arranging diamond grinding materials, wherein the diamonds are medium-grade diamonds for grinding of 40-50 meshes, and due to the effect of orderly arranging the templates, the diamond grinding materials are only distributed in the cavity area of the templates, so that the morphology designed according to landform optimization can be obtained. The top plane of the polishing disc can obtain orderly landform in a vortex shape.
(7) And the orderly arranged templates are removed, so that the arrangement of the grinding materials on the top plane of the grinding disc is realized.
(8) And (4) distributing the inclined surface of the polishing disc according to the methods in the steps (4) to (7), wherein the high-grade 40-50-mesh diamond for grinding is selected as the grinding material. The obtained landform is that single abrasive particles are radially and orderly arranged, and the radial number of the abrasive particles is the same.
(9) And (4) distributing the outer end edge of the polishing disc according to the steps (4) to (7), wherein the high-grade 35-40-mesh diamond for drilling and cutting is selected as the grinding material. The obtained abrasive landform is in close-packed and orderly distribution.
(10) And after the arrangement of the grinding materials is finished, adding brazing solder and carrying out vacuum brazing to prepare the diamond grinding disc for casting polishing.
Example two
The brazing diamond grinding tool suitable for grinding the casting flash is characterized in that the outer end of a grinding disc base body is chamfered, and the size of the fillet is matched with the thickness of the base body.
The arrangement of the abrasive of the brazed diamond grinding tool is as follows:
① the edge of the outer end of the grinding disc is made of medium flat diamond abrasive with the granularity of 35-40 meshes, the transverse distance between two adjacent abrasive grains is 4d, and the longitudinal distance is 5 d.
② the inclined plane of the grinding disc is made of high-grade diamond abrasive with a granularity of 40-50 meshes, the transverse distance between two abrasive grains in the radial direction is 3.5d, and the distance between two rows of abrasive grains in the radial direction is 5 d.
③ the plane abrasive material at the top of the grinding disc is arranged in round clusters, the diameter of each cluster is 6mm, 25-30 medium-grade diamonds of 40-50 meshes are arranged in each cluster area, and 35 diamonds are arranged.
In the brazing diamond grinding tool suitable for grinding casting flashes, the preparation method of the brazing diamond polycrystalline casting grinding disc comprises the following steps:
(1) and (5) grinding the outer diameter of the disc substrate for stamping. The material of the base body of the polishing disc is 65Mn steel, the strength of the tool is guaranteed, and the thickness of the base body is 4.5 mm.
(2) And (3) chamfering the outer edge of the base body of the grinding disc, wherein the chamfer dimension r = 0.5.
(3) And (4) carrying out sand blasting treatment on the surface of the polishing disc substrate, and carrying out ultrasonic cleaning.
(4) And coating a binder on the surface of the cleaned and dried substrate, wherein the binder is used for binding the diamond abrasive particles and the solder. Wherein the adhesive is first applied at the top flat of the abrasive disk.
(5) The orderly arrangement template which is prefabricated according to the arrangement mode of the grinding disc abrasives and is designed according to landform optimization in the embodiment is arranged on the surface of the base body. The template material has good flexibility and can be bent, so that the template material can be tightly attached to the surface of the grinding disc.
(6) And arranging diamond grinding materials, wherein the diamonds are medium-grade diamonds for grinding of 40-50 meshes, and due to the effect of orderly arranging the templates, the diamond grinding materials are only distributed in the cavity area of the templates, so that the morphology designed according to landform optimization can be obtained. The top plane of the polishing disc can obtain orderly landform in a vortex shape.
(7) And the orderly arranged templates are removed, so that the arrangement of the grinding materials on the top plane of the grinding disc is realized.
(8) And (4) distributing the inclined surface of the polishing disc according to the methods in the steps (4) to (7), wherein the high-grade 40-50-mesh diamond for grinding is selected as the grinding material. The obtained landform is that single abrasive particles are radially and orderly arranged, and the radial number of the abrasive particles is the same.
(9) And (4) distributing the outer end edge of the polishing disc according to the steps (4) to (7), wherein the high-grade 35-40-mesh diamond for drilling and cutting is selected as the grinding material. The obtained abrasive landform is in close-packed and orderly distribution.
(10) And after the arrangement of the grinding materials is finished, adding brazing solder and carrying out vacuum brazing to prepare the diamond grinding disc for casting polishing.
The brazing diamond casting polishing disc produced by the method has the characteristics of high polishing efficiency, light hand feeling, small vibration, no odor, long service life, attractive appearance and the like, different grades of grinding materials are selected according to actual conditions, the cost is optimized, the method is more economical, the traditional resin grinding disc is perfectly replaced, the method is the development direction of the casting polishing disc in the casting manufacturing industry, and the method has great market potential.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (10)
1. The utility model provides a brazed diamond grinding apparatus suitable for foundry goods overlap is polished which characterized in that: the grinding disc comprises a grinding disc outer end (1), a grinding disc inclined surface (2), a grinding disc plane top end (3) and a grinding disc (4), positioning holes (5) formed in the grinding disc (4) and diamond poly-gold grinding materials (6) uniformly distributed and brazed on the surfaces of the grinding disc outer end (1), the grinding disc inclined surface (2) and the grinding disc plane top end (3) respectively, wherein the diamond poly-gold grinding materials (6) on the edge of the grinding disc outer end (1) are arranged in an orderly and dense mode, the diamond poly-gold grinding materials (6) on the grinding disc inclined surface (2) are single and distributed in an orderly and equidistant mode along the radial direction of the grinding disc, the diamond poly-gold grinding materials (6) on the surface of the grinding disc plane top end (3) are arranged in a cluster grinding material turbine mode, the bottom of the grinding disc (4) is of a concave surface structure and used for chip; the outer end (1) of the polishing disc, the inclined plane (2) of the polishing disc, the plane top end (3) of the polishing disc and the polishing disc (4) are integrally of a disc-shaped structure.
2. The brazed diamond abrasive tool suitable for casting flash grinding according to claim 1, wherein: the width of the top end (3) of the plane of the grinding disc accounts for 1/3-1/2 of the radius of the grinding disc, and the width of the inclined plane (2) of the grinding disc is 3-5 mm.
3. The brazed diamond abrasive tool suitable for casting flash grinding according to claim 1, wherein: the outer diameter of the polishing disc substrate of the polycrystalline casting of the brazed diamond with the disc-shaped structure is 100mm-180mm, and the thickness of the substrate is 1.4mm-4.5 mm.
4. The brazed diamond abrasive tool suitable for casting flash grinding according to claim 1, wherein: the included angle theta between the inclined plane (2) of the polishing disc and the horizontal direction is 5-15 degrees.
5. The brazed diamond abrasive tool suitable for casting flash grinding according to claim 1, wherein: the diamond poly-gold abrasive (6) is brazed on the surfaces of the outer end (1) of the polishing disc, the inclined plane (2) of the polishing disc and the top end (3) of the plane of the polishing disc, the solder is nickel-copper-chromium-boron-silicon alloy, and the brazing mode is vacuum brazing.
6. The brazed diamond abrasive tool suitable for casting flash grinding according to claim 5, wherein: the diamond poly-gold abrasive (6) at the edge of the outer end (1) of the grinding disc is orderly and densely arranged high-grade abrasive for drilling and cutting, the granularity is 10-50 meshes, the transverse distance between two adjacent diamond poly-gold abrasives (6) is 2d-4d, the longitudinal distance between two adjacent diamond poly-gold abrasives (6) is 2d-5d, and d is the maximum grain diameter of the diamond poly-gold abrasive (6).
7. The brazed diamond abrasive tool suitable for casting flash grinding according to claim 1, wherein: the diamond gold-gathered grinding materials (6) on the inclined surface (2) of the grinding disc are the same in number in the radial direction of the grinding disc.
8. The brazed diamond abrasive tool suitable for casting flash grinding according to claim 1, wherein: the diamond poly-gold grinding material (6) on the plane of the top end (3) of the grinding disc is a medium-grade turbine-shaped cluster grinding material, the granularity is 10-50 meshes, and each cluster of the diamond poly-gold grinding material (6) is 3-8.
9. A preparation method of a brazed diamond grinding tool suitable for casting flash grinding is characterized by comprising the following steps: the method comprises the following steps:
polishing and punching the outer diameter of the disc substrate;
polishing the outer edge of the disc substrate to chamfer;
carrying out sand blasting treatment on the surface of the polishing disc substrate, and carrying out ultrasonic cleaning;
coating a binder on the surface of the cleaned and dried substrate, wherein the binder is used for binding diamond abrasive particles and solder;
sequentially carrying out abrasive material arrangement on the top end of the plane of the polishing disc, the inclined plane of the polishing disc and the edge of the outer edge of the polishing disc;
(6) and after the arrangement of the grinding materials is finished, adding brazing solder and carrying out vacuum brazing to prepare the diamond grinding disc for casting polishing.
10. The method of claim 9, wherein the abrasive arrangement of the top planar end of the abrasive disc, the bevel of the abrasive disc and the outer edge of the abrasive disc is performed by the steps of: (1) placing a prefabricated orderly-arranged template designed according to landform optimization on the surface of a substrate; arranging diamond grinding materials, wherein the diamond grinding materials are distributed in the cavity area of the template, so that the morphology designed according to landform optimization is obtained; (2) the top end of the plane of the polishing disc obtains a swirl-arranged cluster-shaped ordered landform; the edge of the outer end of the polishing disc obtains ordered and densely arranged landforms; the grinding disc inclined plane obtains a landform with single abrasive particles orderly arranged and the same radial number; (3) and removing the orderly arranged template to obtain the optimal arranged surface morphology of the diamond according to the landform.
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| CN202010129257.2A CN111136590A (en) | 2020-02-28 | 2020-02-28 | Brazing diamond grinding tool suitable for casting flash grinding and preparation method thereof |
| PCT/CN2020/128533 WO2021169415A1 (en) | 2020-02-28 | 2020-11-13 | Brazed diamond grinding tool suitable for casting flash grinding and preparation method therefor |
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| WO2021169415A1 (en) * | 2020-02-28 | 2021-09-02 | 南京固华机电科技有限公司 | Brazed diamond grinding tool suitable for casting flash grinding and preparation method therefor |
| WO2021169417A1 (en) * | 2020-02-28 | 2021-09-02 | 南京固华机电科技有限公司 | Brazed diamond abrasive tool suitable for casting trim polishing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108515468A (en) * | 2018-05-09 | 2018-09-11 | 湖北昌利超硬材料有限公司 | A kind of novel soldering diamond abrasive tool and its preparation process |
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| IT1398334B1 (en) * | 2010-03-01 | 2013-02-22 | Ficai | ANULAR ABRASIVE WHEEL |
| CN102896590B (en) * | 2012-09-21 | 2015-03-11 | 南京航空航天大学 | Process for distributing grinding materials of grinding disc of ship body made of brass solder super-hard grinding material |
| US9844853B2 (en) * | 2014-12-30 | 2017-12-19 | Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs | Abrasive tools and methods for forming same |
| CN106584294B (en) * | 2016-12-20 | 2018-09-25 | 江苏索力德机电科技股份有限公司 | A kind of flexible grinding soldering super hard abrasive mill |
| CN206578721U (en) * | 2016-12-20 | 2017-10-24 | 江苏索力德机电科技股份有限公司 | A kind of flexible be ground with welding lining uses soldering super hard abrasive mill |
| CN111136590A (en) * | 2020-02-28 | 2020-05-12 | 南京固华机电科技有限公司 | Brazing diamond grinding tool suitable for casting flash grinding and preparation method thereof |
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| CN108515468A (en) * | 2018-05-09 | 2018-09-11 | 湖北昌利超硬材料有限公司 | A kind of novel soldering diamond abrasive tool and its preparation process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021169415A1 (en) * | 2020-02-28 | 2021-09-02 | 南京固华机电科技有限公司 | Brazed diamond grinding tool suitable for casting flash grinding and preparation method therefor |
| WO2021169417A1 (en) * | 2020-02-28 | 2021-09-02 | 南京固华机电科技有限公司 | Brazed diamond abrasive tool suitable for casting trim polishing |
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Application publication date: 20200512 |