CN110695865A - Composite-granularity abrasive belt and preparation method thereof - Google Patents
Composite-granularity abrasive belt and preparation method thereof Download PDFInfo
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- CN110695865A CN110695865A CN201910993794.9A CN201910993794A CN110695865A CN 110695865 A CN110695865 A CN 110695865A CN 201910993794 A CN201910993794 A CN 201910993794A CN 110695865 A CN110695865 A CN 110695865A
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- abrasive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/001—Manufacture of flexible abrasive materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/04—Zonally-graded surfaces
Abstract
The invention relates to the technical field of grinding processing, and provides a composite grain abrasive belt and a preparation method thereof, wherein the composite grain abrasive belt comprises a base body, a bonding layer and an abrasive layer; the abrasive layer comprises a plurality of sanding areas; the grinding ends of the abrasive particles of each sanding area are at the same reference height; each sanding area is provided with abrasive particles with the same granularity, and the granularity of the abrasive particles in each sanding area is changed in a gradient manner along the long edge direction of the abrasive belt; when the abrasive belt disclosed by the invention is used for carrying out surface treatment on a workpiece along the long edge direction of the abrasive belt, the abrasive particles in different sanding areas can be used for sequentially grinding the surface of the workpiece, so that the workpiece can obtain lower surface roughness while removing materials, and the abrasive belt is favorable for greatly simplifying the structural arrangement of a plurality of groups of sanding frames on a sanding machine when being used for the sanding machine, so that the sanding machine is simpler and more convenient to operate, the efficiency of sanding the surface of the workpiece is improved, and the power consumption of the sanding machine is reduced.
Description
Technical Field
The invention relates to the technical field of grinding processing, in particular to a composite-granularity abrasive belt and a preparation method thereof.
Background
At present, the abrasive belt is used as the grinding tool with the highest grinding efficiency in the coated grinding tool, has the characteristics of cold grinding and elastic grinding, and is widely applied to the processing fields of metal, wood and the like. In recent years, the abrasive belt grinding technology has been developed in its entirety toward strength, efficiency, high speed, and precision. In order to further prolong the service life of the abrasive belt and expand the application range of the abrasive belt, the abrasive belt production technology is rapidly developed in the aspects of abrasive material structure type, coating process, sand planting process and the like. In terms of abrasive belt types and abrasive structures, products such as abrasive belt with accumulated abrasives, abrasive belt with pyramidal abrasive particles, abrasive belt with composite abrasive particles of hollow spheres, high-elasticity abrasive belt and the like appear.
However, the development of new abrasives and belts has focused mainly on the field of metal grinding, and few coated abrasives have been designed specifically for wood grinding.
The application of the coated abrasive in the wood processing industry accounts for about 30-40% of the whole application field, wherein the vast majority of the coated abrasive is abrasive belts. The abrasive belt is mainly used for workpiece thickness determination, size calibration and material surface quality improvement. In addition, wood belt grinding has its own features: on one hand, compared with common electrostatic sand-planting (mostly corundum and silicon carbide) abrasive belts widely applied in wood grinding, the novel abrasive tools such as the accumulated abrasive belt and the pyramid-shaped abrasive belt have the advantages of long service life of the abrasive belt, high material removal rate, good surface quality and the like, but the economic benefit in the wood processing field is far lower than that in the metal processing field, and the application of the abrasive tools in the wood abrasive belt grinding field is limited due to the higher price of the abrasive tool product; on the other hand, compared with metal and ceramic materials, wood has biological characteristics such as a pore structure, a fiber structure and the like, the grinding surface roughness of the wood is not as high as that of metal due to the biological unevenness of the wood, and most of the existing abrasive belts are planted with abrasive grains with single grain size, and when the surface grinding treatment is carried out on the wood and products thereof, the procedures of coarse sand grinding, fine grinding and polishing are generally covered. At present, a wood processing enterprise usually adopts a sander with a plurality of groups of sanding frames to finish sanding operation in a sanding section, and in the operation process, a workpiece sequentially passes through each grinding head, wherein sanding belts with different meshes are loaded on each grinding head.
Therefore, the existing abrasive belts not only have the problem of high cost, but also have single function, and the combination of abrasive belts with different meshes is needed to finally realize the given material removal and reach the expected surface roughness requirement. In addition, in the actual use process, the abrasive belts on the abrasive frames need to be frequently replaced, the tension force of the abrasive belts is adjusted, the production efficiency is greatly influenced, the abrasive frame composed of a plurality of grinding heads is complex in structure and difficult to maintain, and the problem of high power consumption exists in the work process.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a composite-granularity abrasive belt and a preparation method thereof, which are used for solving the problems that the existing abrasive belt has high cost and single function, and the surface of wood can be finely ground and polished only by adopting the combination of abrasive belts with different meshes, and are used for simplifying the structure of a sander with a plurality of groups of sand racks, avoiding the frequent replacement and tensioning of the abrasive belts in the operation process, improving the production efficiency and reducing the power consumption.
(II) technical scheme
In order to solve the technical problem, the invention provides a composite grain size abrasive belt in one aspect, which comprises a base body, a bonding layer and an abrasive layer, wherein the bonding layer is arranged on the base body, and the abrasive layer is arranged on the bonding layer; the abrasive layer comprises a plurality of sanding areas; the grinding ends of the abrasive particles of each sanding area are at the same reference height; each sanding area is provided with abrasive particles with the same granularity, and the granularity of the abrasive particles in each sanding area is changed in a gradient mode along the long edge direction of the abrasive belt.
Preferably, the sanding area comprises a first sanding area, a second sanding area and a third sanding area which are sequentially arranged along the long edge direction of the sanding belt; the first sanding area, the second sanding area, the granularity of third sanding area grit reduces in proper order.
Preferably, the abrasive grain size of the first sanding area is 46-80 meshes, the abrasive grain size of the second sanding area is 100-180 meshes, and the abrasive grain size of the third sanding area is 200-400 meshes.
Preferably, in the invention, the abrasive particles in the sanding area are uniformly distributed, each abrasive particle is arranged with a pointed end facing upwards and a big end facing downwards, and the pointed end is a grinding end of the abrasive particle.
Preferably, the present invention provides in another aspect a method for preparing a grinding belt based on the above composite particle size, comprising:
s1, adjusting the thickness of the corresponding area on the upper surface of the base body according to the preset positions of different sanding areas, so that the grinding ends of the abrasive particles in each sanding area are at the same reference height;
s2, coating an adhesive layer on the upper surface of the substrate;
and S3, planting abrasive particles with corresponding grain sizes on the bonding layer according to preset different sanding areas.
Preferably, step S3 in the present invention includes: the abrasive particles are uniformly implanted on the bonding layer by adopting an electrostatic sand planting process, the electric field force is ensured to be uniformly distributed when the sand is planted, and the electric field force of the abrasive particles with large granularity is larger than that of the abrasive particles with small granularity when the abrasive particles with large granularity are implanted.
Preferably, the material of the abrasive particles in the invention is corundum or silicon carbide.
(III) technical effects
According to the composite-granularity abrasive belt provided by the invention, the abrasive layer is partitioned, the abrasive particles in different sanding areas are set to be at the same reference height, and the granularity of the abrasive particles in each area is in gradient change, so that when the surface of a workpiece is sanded along the long edge direction of the abrasive belt, the abrasive particles in different sanding areas can sequentially grind the surface of the workpiece, so that the workpiece is subjected to material removal, and meanwhile, the lower surface roughness is obtained, and the production efficiency is greatly improved. The sanding belt is particularly suitable for surface sanding treatment of workpieces with biological unevenness.
According to the preparation method of the abrasive belt based on the composite granularity, provided by the invention, in the preparation process, the thickness of the corresponding area on the upper surface of the base body is correspondingly adjusted according to the preset positions of different sanding areas, so that the grinding ends of the abrasive particles implanted into the bonding layer are positioned at the same reference height, the whole preparation process is simple, the granularity of the abrasive particles in each sanding area is ensured to be changed in a gradient manner along the long edge direction of the abrasive belt, and the abrasive particles with different granularities are compounded on the abrasive belt in a partitioning manner. Compared with coated abrasive tools such as abrasive belt accumulation, pyramid-shaped abrasive belt and the like, the abrasive belt has more advantages in manufacturing cost.
In addition, when the composite-granularity abrasive belt disclosed by the invention is used for a sander, a single composite-granularity abrasive belt is adopted, so that the material removal and surface finish grinding polishing operation can be synchronously completed on a workpiece, the structural arrangement of a plurality of groups of sand racks on the sander is greatly simplified, the operation is simpler and more convenient, the sanding treatment efficiency is improved, and meanwhile, the power consumption of the sander is also reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of a composite grain size abrasive belt according to an embodiment of the present invention;
figure 2 is a schematic partial front view of a grinding belt including three sanding areas according to an embodiment of the present invention;
figure 3 is a schematic view of a partially flat, open-out configuration of a grinding belt including three sanding areas according to an embodiment of the present invention;
FIG. 4 is a schematic view of a grinding profile formed by a surface of a workpiece in a first grinding cycle with a first sanding area in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of a grinding topography formed by the surface of a workpiece during a first grinding cycle in cooperation with a second sanding region and a first sanding region in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of a grinding topography formed by the work piece surface during a first grinding cycle in cooperation with the third, second and first sanding areas in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of a workpiece surface being subjected to a first sanding area during a second grinding cycle to form a grinding profile in accordance with an embodiment of the present invention;
FIG. 8 is a schematic view of a grinding topography formed by the surface of a workpiece during a second grinding cycle in cooperation with the second and first sanding areas in accordance with an embodiment of the present invention;
FIG. 9 is a schematic view of the grinding topography created by the combination of the third, second and first sanding areas on the surface of the workpiece during a second grinding cycle in accordance with an embodiment of the present invention;
FIG. 10 is a schematic view of a sander having multiple sanding blocks using a conventional sanding belt;
FIG. 11 is a schematic diagram of a sander configured to use a composite grit sanding belt in accordance with an embodiment of the present invention;
fig. 12 is a flow chart showing a method for manufacturing a composite grain abrasive belt according to an embodiment of the present invention.
In the figure: 1. a substrate; 2. a bonding layer; 3. an abrasive layer; 4. a workpiece; 5. a common abrasive belt; 6. a composite granularity abrasive belt.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, in one aspect, the present embodiment provides a composite grain abrasive belt, which includes a base 1, a bonding layer 2, and an abrasive layer 3, wherein the bonding layer 2 is disposed on the base 1, and the abrasive layer 3 is disposed on the bonding layer 2; abrasive layer 3 includes a plurality of sanding areas; the grinding ends of the abrasive particles of each sanding area are at the same reference height so as to ensure the grinding effect; every sanding area sets up the grit of same grit, and the grit of each sanding area grit is gradient change along the long limit direction of grinding abrasive band.
Specifically, when the abrasive belt is structurally configured, the number of the sanding areas divided on the abrasive belt is two or more, the number of the specifically divided areas and the area ratio of each area on the unfolded grinding abrasive belt can be set according to the processing requirements of different ground materials, and the requirement that the grain size of the abrasive grains is changed in a gradient manner is met, that is, the grain size of the abrasive grains in each sanding area is gradually increased or decreased along the long side direction of the grinding abrasive belt.
Meanwhile, in fig. 1 to 3, the abrasive particles with the same size are based on the orientation and the position relationship shown in the drawings, which is only for convenience of describing the grinding abrasive belt shown in the embodiment, but does not indicate or suggest that the indicated abrasive particles cannot be arranged in other forms, and the arrangement form of the abrasive particles changes with the change of the sand planting process.
In addition, in fig. 1-3, each abrasive particle of the respective sanding zone is depicted as a tapered structure for ease of illustration, rather than to indicate or imply that the abrasive particle cannot be in other configurations, as long as the abrasive particle meets the grinding requirements and is within the scope of the present invention.
Therefore, when the abrasive belt shown in the embodiment performs surface treatment on a workpiece along the long side direction of the abrasive belt, the abrasive particles in different sanding areas can sequentially grind the surface of the workpiece, so that the workpiece can obtain lower surface roughness while removing materials, and the production efficiency is greatly improved.
Further, in order to ensure the effect of performing surface sanding treatment on a workpiece, especially a workpiece with biological unevenness, when the sanding belt is specifically designed, the embodiment should ensure that the difference between the particle sizes of the abrasive particles in two adjacent sanding areas is reasonably set according to the characteristics of the material to be sanded, wherein the workpiece is preferably a wooden material, specifically wood, an artificial board and a wooden composite material.
Further, in this embodiment, the sanding area includes a first sanding area, a second sanding area, and a third sanding area sequentially arranged along the long side direction of the grinding sanding belt; the granularity of first sanding district, second sanding district, third sanding district grit reduces in proper order.
Specifically, the first sanding area can select coarse abrasive particles with the mesh number of 46-80 meshes, the second sanding area can select medium-sized abrasive particles with the mesh number of 100-180 meshes, and the third sanding area can select fine abrasive particles with the mesh number of 200-400 meshes. It should be noted that the numbers of the abrasive particles respectively arranged in the first sanding area, the second sanding area and the third sanding area are only used for further specifically describing the scheme shown in the embodiment, and do not indicate or suggest that abrasive particles with other particle sizes cannot be used.
At the same time, it is further illustrated in fig. 3 that the width of the abrasive particles arranged in the first, second and third sanding area corresponds to l1、l2、l3The three widths also characterize the distribution area of the three grain sizes in the spread area of the abrasive belt accordingly.
When the composite abrasive particle abrasive belt grinds the surface of a workpiece, the abrasive belt can select 80-mesh coarse abrasive particles in a first sanding area, 120-mesh medium-size abrasive particles in a second sanding area and 200-mesh fine abrasive particles in a third sanding area.
In the first grinding period, grinding topographies as shown in fig. 4, 5 and 6 are sequentially formed on the surface of the workpiece, wherein the grinding topography as shown in fig. 4 is a grinding trace formed by coarse abrasive grains with 80 meshes, the grinding topography as shown in fig. 5 is a grinding trace left on the surface of the workpiece on the basis of abrasive grains with 120 meshes on the basis of the grinding trace formed by the coarse abrasive grains with 80 meshes, and the grinding topography as shown in fig. 6 is a grinding trace left on the surface of the workpiece on the basis of abrasive grains with 200 meshes on the basis of a superimposed grinding trace formed by the abrasive grains with 80 meshes and 120 meshes.
Similarly, when the surface of the workpiece is further ground in the second grinding cycle, the coarse abrasive grains having a grinding profile of 80 mesh shown in fig. 7 form grinding traces on the surface of the workpiece by the second grinding, the abrasive grains having a grinding profile of 120 mesh shown in fig. 8 form grinding traces on the surface of the workpiece shown in fig. 7, and the abrasive grains having a grinding profile of 200 mesh shown in fig. 9 form grinding traces on the surface of the workpiece shown in fig. 8.
Therefore, when the grinding abrasive belt rotates at a high speed, the surface quality of the workpiece obtained by final grinding is good, and meanwhile, partial workpiece materials can be effectively removed. Furthermore, it is considered that the grinding belt moves laterally during high-speed rotation, which on the other hand also increases the removal of the workpiece material.
Furthermore, each abrasive particle in the sanding area in this embodiment is evenly arranged, and each abrasive particle is arranged with the pointed end facing upwards and the big end facing downwards, and the pointed end is the grinding end of the abrasive particle.
Particularly, all abrasive particles in the sanding area are uniformly distributed, so that the processing quality of the surface of the workpiece is favorably ensured; in addition, each abrasive particle is designed to be arranged with a pointed end facing upwards and a large end facing downwards, so that the bonding firmness of each abrasive particle is ensured, and the grinding effect of each abrasive particle is ensured.
Further, referring to fig. 12, in another aspect, the present embodiment provides a method for preparing an abrasive belt based on the above composite grain size, including:
s1, adjusting the thickness of the corresponding area on the upper surface of the base body according to the preset positions of different sanding areas, so that the grinding ends of the abrasive particles in each sanding area are at the same reference height;
s2, coating an adhesive layer on the upper surface of the substrate;
and S3, implanting abrasive particles with corresponding sizes on the bonding layer according to preset different sanding areas.
Specifically, in the preparation process of the preparation method shown in this embodiment, the thickness of the corresponding area on the upper surface of the base body is adjusted accordingly only according to the preset positions of different sanding areas, so that the grinding ends of the abrasive particles implanted into the bonding layer are located at the same reference height, the whole preparation process is simple, the particle size of the abrasive particles in each sanding area is ensured to be changed in a gradient manner along the long side direction of the grinding abrasive belt, and the abrasive particles with different particle sizes are distributed on the abrasive belt in a partitioning and compounding manner.
Further, step S3 in this embodiment includes: the abrasive particles are uniformly implanted on the bonding layer by adopting an electrostatic sand planting process, the electric field force is ensured to be uniform when sand is planted, and the electric field force of the abrasive particles with large granularity is larger than that of the abrasive particles with small granularity when the abrasive particles with large granularity are implanted.
Specifically, when the grit of the different granularities that correspond first sanding district, second sanding district and third sanding district in proper order planted the sand, because the granularity of these three sanding district's grit reduces in proper order, when planting the sand operation, the size of the electric field power of setting also correspondingly reduces in proper order.
Further, in the embodiment, the material of the abrasive particles is corundum or silicon carbide.
Further, referring to fig. 10, the use of the composite grit sanding belt 6 of the present embodiment greatly simplifies the construction of a multi-head sanding machine, in which the composite grit sanding belt 6 is mounted on a sanding machine having only one head as shown in fig. 11, compared to a sanding machine having a plurality of sets of sanding frames, which uses a conventional sanding belt 5. Originally, work piece 4 need loop through multiunit sand frame in proper order, and then accomplish coarse sand, correct grinding and polishing operation, can once only pass through the sand frame that loads compound granularity abrasive band 6 now, realize material ration in step and get ideal surface roughness. The sanding machine has the advantages that the operation is simpler and more convenient, the sanding efficiency of the workpiece is improved, and meanwhile, the power consumption of the sanding machine is greatly reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A composite size abrasive belt comprising a substrate, a bonding layer disposed on the substrate, and an abrasive layer disposed on the bonding layer, wherein the abrasive layer comprises a plurality of sanding areas;
the grinding ends of the abrasive particles of each sanding area are at the same reference height;
every sanding area sets up the grit of same grit, each the grit of sanding area grit is gradient change along the long limit direction of grinding abrasive band.
2. The composite grain abrasive belt of claim 1,
the sanding area comprises a first sanding area, a second sanding area and a third sanding area which are sequentially arranged along the long edge direction of the abrasive belt;
the first sanding area, the second sanding area, the granularity of third sanding area grit reduces in proper order.
3. The composite grain abrasive belt of claim 2,
the abrasive particle size of first sanding district is 46 ~ 80 meshes, the abrasive particle size of second sanding district is 100 ~ 180 meshes, the abrasive particle size of third sanding district is 200 ~ 400 meshes.
4. The composite grain abrasive belt of any one of claims 1-3, wherein the abrasive grains in the sanding area are uniformly arranged, each abrasive grain is arranged with a pointed end facing upwards and a pointed end facing downwards, and the pointed end is a grinding end of the abrasive grain.
5. A method of making a composite grit abrasive belt according to any one of claims 1 to 4, comprising:
s1, adjusting the thickness of the corresponding area on the upper surface of the base body according to the preset positions of different sanding areas, so that the grinding ends of the abrasive particles in each sanding area are at the same reference height;
s2, coating an adhesive layer on the upper surface of the substrate;
and S3, implanting abrasive particles with corresponding sizes on the bonding layer according to preset different sanding areas.
6. The method according to claim 5, wherein step S3 includes:
the abrasive particles are uniformly implanted into the bonding layer by adopting an electrostatic sand planting process, so that the electric field force is kept uniform when sand is planted, and the electric field force of the abrasive particles with large particle sizes is larger than that of the abrasive particles with small particle sizes when the abrasive particles with large particle sizes are implanted.
7. The production method according to claim 5 or 6,
the abrasive particles are made of corundum or silicon carbide.
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| CN201910993794.9A CN110695865A (en) | 2019-10-18 | 2019-10-18 | Composite-granularity abrasive belt and preparation method thereof |
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| CN201910993794.9A CN110695865A (en) | 2019-10-18 | 2019-10-18 | Composite-granularity abrasive belt and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633474A (en) * | 2020-05-15 | 2020-09-08 | 芜湖精艺铜业有限公司 | Corrosion-resistant copper alloy pipe surface cleaning device and cleaning method |
| CN115351705A (en) * | 2022-10-21 | 2022-11-18 | 西安奕斯伟材料科技有限公司 | Apparatus and method for dressing grinding wheel |
-
2019
- 2019-10-18 CN CN201910993794.9A patent/CN110695865A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633474A (en) * | 2020-05-15 | 2020-09-08 | 芜湖精艺铜业有限公司 | Corrosion-resistant copper alloy pipe surface cleaning device and cleaning method |
| CN111633474B (en) * | 2020-05-15 | 2021-08-06 | 芜湖精艺铜业有限公司 | Corrosion-resistant copper alloy pipe surface cleaning device and cleaning method |
| CN115351705A (en) * | 2022-10-21 | 2022-11-18 | 西安奕斯伟材料科技有限公司 | Apparatus and method for dressing grinding wheel |
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