WO2019174580A1

WO2019174580A1 - Abrasive tool and fabrication method therefor

Info

Publication number: WO2019174580A1
Application number: PCT/CN2019/077870
Authority: WO
Inventors: 宋京新; 蔡元沛; 郭新玲
Original assignee: 桂林创源金刚石有限公司
Priority date: 2018-03-12
Filing date: 2019-03-12
Publication date: 2019-09-19
Also published as: KR20210003090A; WO2019174581A1; EP3766637A1; KR102396879B1; JP7105507B2; EP3766636A4; EP3766637B1; US20210370472A1; EP3766636A1; EP3766637A4; JP2021516170A

Abstract

An abrasive tool and a fabrication method therefor, comprising: a plurality of thin teeth (2), the plurality of thin teeth (2) being stacked in sequence to form a circular structure, wherein two adjacent thin teeth (2) are fixedly connected; grooves (4) are formed between two adjacent thin teeth (2). The grooves of the abrasive tool are narrow wherein cooling performance is better the greater the number of grooves, thus having a chip-discharge effect. Meanwhile, the fabrication method for the abrasive tool features a work process having low difficulty and is easy for mass production, facilitating the high-speed and high-efficiency processing of abrasive tools having an organic bonding agent and an inorganic bonding agent.

Description

Abrasive tool and manufacturing method

Technical field

The invention relates to the technical field of abrasive tools, in particular to an abrasive tool and a manufacturing method thereof.

Background technique

The metal bond diamond grinding wheel is generally manufactured by a powder metallurgy sintering process.

In order to improve the sharpness of diamond grinding wheel processing, it is necessary to improve the chipping, chip discharging and cooling capacity of the diamond grinding wheel during the working process. The effective way is to use a toothed grinding wheel with a groove body, using intermittent (impact) grinding. Cutting function to improve grinding efficiency, the usual practice is to set some groove structure on the working layer of diamond to facilitate chip removal (chip) and water (water), generally adopting the method of preset by the mold. Molding is used to produce a toothed diamond wheel with a groove.

The powder metallurgy process requires hot press sintering through a mold, and therefore, the hot strength of the mold is required to be high. The tank body is usually made of graphite, cast iron, alloy and other materials. The nozzle block is preset in the mold. After hot pressing and sintering, the water block is removed (pushed) to form.

Generally, the nozzle block of metal or alloy needs to be difficult to be deformed and is not easily broken when the mold is removed. Graphite nozzle block, fragile. In order to meet the strength requirements, it is necessary to have sufficient solid cross-sectional area in all directions of the nozzle block, especially the main bearing surface. In this way, the volume of the nozzle block is inevitably large, resulting in a large gap between the diamond teeth and the teeth (ie, the width of the groove body is large), and the width of the groove body is large, which is advantageous for cooling the material to be processed, but for the working layer of the diamond. The cooling effect is very limited. In the intermittent grinding, the grinding wheel has a large impact force and a large jump, which increases the surface roughness of the workpiece.

In the case where the geometry of the grinding wheel is constrained, the larger the volume occupied by the groove body and the larger the number, the smaller the volume of the diamond working layer. Therefore, the volume of the nozzle block is limited by the manufacturing process conditions such as strength and cannot be too small, and in order to ensure that the diamond working layer has a sufficient volume (ie, to ensure sufficient life), the number of the tanks is objectively limited. . Limiting the number of tanks, which in turn limits the diamond working teeth to a thinner space in the circumferential direction. In this way, the circumferential chip removal path is long and the amount of dust accumulation is large, and the heat generation amount of the grinding wheel is also large, and the situation is even worse when the machining is fast or high-speed feeding! It is generally necessary to increase the particle size of the diamond to improve the chip space and alleviate the above, but the increase in particle size is not conducive to the reduction of the surface roughness of the workpiece.

The wider the tank and the smaller the amount, the smaller the outer surface area (including the ground surface and the non-ground surface) of the working layer of the grinding wheel, that is, the smaller the area affected by the cooling water, the worse the cooling effect.

Metal bond diamond grinding wheel is generally manufactured by powder metallurgy process. In the high temperature and high pressure manufacturing process, the metal powder (bonding agent) has poor fluidity. If the mold structure is too complicated, the pressure transmission will be affected, resulting in diamond. The density of the grinding wheel is uneven and the performance deviation occurs. Therefore, some complicated structures cannot be manufactured by powder metallurgy. Some special structures, such as thin, pointed, long, thin, mesh-shaped teeth, under hot pressing conditions, the performance of the mold material can not meet the process requirements, so that it can not be completed by the preset mold or economical Manufacturing.

The diamond grinding wheel product manufactured by the prior art process can realize the smaller number of the groove body and the larger volume occupied by the groove body through the preset of the mold, and the shape of the diamond tooth is simple and coarse, and the effect is very limited. If the post-processing method is adopted, it is usually difficult to process, resulting in an increase in cost.

With the continuous development of technology, high-quality high-speed and high-efficiency processing is inevitable, and existing technology products are difficult to adapt.

The situation described in the above-mentioned technical background, not only in the presence of a metal bond grinding wheel, but also in a ceramic bond, a resin bond, a rubber bond, an organic bond diamond wheel or a conventional abrasive grinding wheel or a polishing wheel, whether There are similar problems when there is a matrix or no matrix. The ceramic bond grinding wheel has good heat resistance, but the cooling of the workpiece is limited when machining at high speed, high efficiency, and large grinding contact area. The resin binder and the rubber bond grinding wheel (including the polishing wheel) have poor heat resistance. When high speed and high efficiency processing, it is necessary to improve the grinding ability, which requires better ability to hold the abrasive, and at the same time requires better cooling and increase. The large elasticity and porosity are not conducive to life and rigidity, and the various factors are mutually restricted, thus limiting the application of high speed and high efficiency machining.

Summary of the invention

The object of the present invention is to provide an abrasive tool and a manufacturing method which are reliable in manufacturing process, simple in structure, easy to implement, and low in manufacturing cost, high in energy saving and safe.

The technical solution of the present invention to solve the above technical problems is as follows: an abrasive tool comprising a plurality of sheet teeth, wherein the plurality of sheet teeth are sequentially stacked to form a ring structure, and two adjacent ones of the sheet teeth are fixedly connected; two adjacent A groove body is formed between the sheet teeth.

Further, the invention further includes a base body having a ring structure and a pressure plate, wherein the annular structure formed by the plurality of the leaf teeth is fixed on the base body, the pressure plate has an annular structure, and the pressure plate is connected with the base body by bolts, and is pressed more The flake teeth.

Further, the plurality of sheet teeth include a plurality of sheet teeth A and a plurality of sheet teeth B, a plurality of the sheet teeth A being alternately arranged with the plurality of sheet teeth B; or a plurality of elastic sheet teeth A and one elastic sheet teeth B Staggered arrangement; or a plurality of elastic sheet teeth A constitute elastic sheet teeth A group, a plurality of elastic sheet teeth B constitute elastic sheet teeth B group, elastic sheet teeth A group and elastic sheet teeth B group are staggered; sheet teeth A and When the sheet teeth B are adjacently combined, the lower portion of the sheet teeth A and the lower portion of the sheet teeth B constitute an interlocking structure.

Further, the elastic sheet teeth A are made of a first bonding agent and an abrasive, and the elastic sheet teeth B are made of a second bonding agent and an abrasive.

Further, the base body is provided with a limiting groove disposed along the inner edge of the base ring; a lower portion of the plurality of the laminating teeth are embedded in the limiting groove, and the upper portions of the plurality of the laminating teeth are made of an abrasive layer .

Further, the abrasive layer is made of diamond.

Further, the end surface of the pressing plate near the sheet teeth is inclined and closely matched with the end surface of the sheet teeth, and the filling plate is provided with a filling body embedded in the pressing plate near the annular end surface of the sheet teeth.

Further, a plurality of said troughs are arranged in a ring shape along said annular structure, and each of said troughs is relatively offset from a radial arrangement of said annular structure.

Further, each of the sheet teeth is away from the end portion in the base ring, and one side of the end portion is provided with a first bump connected thereto.

Further, a plurality of first ridges are connected to each of the sheet teeth on the side wall of the other sheet teeth.

Further, a plurality of second bumps are connected to one side wall of each of the sheet teeth.

Further, the plurality of sheet teeth comprise a plurality of sheet teeth C and a plurality of sheet teeth D, and the plurality of sheet teeth C are successively stacked to form a first abrasive body, and the plurality of sheet teeth D are successively stacked to form a second abrasive body, The plurality of first abrasive bodies and the plurality of second abrasive bodies are alternately formed on the base body; the width of one end of the sheet teeth C near the base body is greater than the width of the other end thereof, and the sheet teeth D are close to the base body. The width of one end is less than the width of the other end.

Further, an end surface of the annular structure is in close contact with an edge of the base body; the pressure plate is annularly disposed at an upper end of the base body;

The side surface of the sheet tooth near the inner end of the base ring is provided with an engaging position, and the adjacent two sheet teeth are meshed with each other by the engaging position, and the lower end surface of the pressing plate is inclined downward from the inside of the ring of the pressing plate to the outer ring, and is relatively The sheet teeth are constrained; a grinding structure is disposed at one end of each of the sheet teeth away from the base ring.

Further, the arc length of each point in the axial direction of the grinding structure of the sheet tooth is positively related to the processing amount at the point.

Further, the upper end portion of each of the sheet teeth is provided with a plurality of grooves in the radial direction of the annular structure, and the plurality of grooves and the plurality of grooves form a mesh structure to form a mesh surface.

Further, two adjacent said sheet teeth are fixedly joined by gluing and/or fasteners.

Further, the binder of the sheet teeth is an organic binder, an inorganic binder or a composite binder.

Further, the grinding tool is a sheet-toothed diamond grinding wheel.

A method for manufacturing an abrasive tool, comprising the following steps:

S1. making the sheet teeth according to the setting structure, so that the ratio of the radial average length of the sheet teeth to the circumferential average width is greater than 2.5 times;

S2. The main pressing surface of the sheet teeth is made into a non-grinding working surface, and the main pressing surface is the surface with the largest sheet tooth area;

S3. A plurality of sheet teeth are arranged in a stacked manner between the main pressing faces to form a ring structure.

Further, the method further includes the step S4: consolidating the plurality of sheet teeth to the substrate by the pressing plate and the bolt.

The beneficial effects of the invention are:

1. Without affecting the physical volume of the working layer of the abrasive, the larger the volume of the tank, the larger the external surface area (including the ground surface and the non-ground surface) of the working layer of the grinding wheel, the more the area affected by the cooling water Large, the better the cooling effect.

2. The more the number of tanks, the narrower the circumferential width of the abrasive teeth, the shorter the dust discharge path, the smaller the amount of dust accumulation and the smaller the friction of the binder to the abrasive body, which means that the grinding heat is lower, which is beneficial to High-speed and efficient processing is conducive to the expansion of applications that are not resistant to high temperatures.

3, the number of tanks is large, the dust discharge path is short, the amount of dust accumulation is small, the friction resistance of the dust is small, the required chip space is small, and the requirement for abrasive exposure height is low, this characteristic is also beneficial to adopt relatively more Fine abrasives for high-quality machining, this feature also facilitates efficient machining with relatively faster travel speeds or larger tool sizes.

4. Through the structural processing of the flake teeth, it is easy to realize that the abrasive layer is in use, the grinding surface is partially worn quickly to form a circumferential groove, and the groove forms a new trough on the grinding surface, and is formed by stacking. The trough body forms a mesh trough on the grinding surface, forming a mesh grinding surface, shortening the radial discharge path of the dust, improving the pressure of the grinding surface during grinding, thereby improving the sharpness and life of the grinding wheel. .

5, is conducive to dry grinding processing.

6, the characteristics of the manufacturing process, easy to achieve a similar orderly structure of the abrasive layer, improve the sharpness and life of the grinding wheel, more suitable for rough grinding processing.

7. Presenting the structural function of double or multi-ring, exerting or surpassing the technical effects of the prior art.

8. It is convenient to realize the laminar toothed grinding wheel which is difficult to be processed as a whole, by being decomposed into single teeth and assembling and consolidating.

9. By providing a plurality of dense bosses on the pressing surface, the adjacent two sheet teeth are supported by each other, which is convenient for realizing the circumferential thinning of the sheet teeth, and enhancing the sheet teeth against stress fracture, displacement and vibration. Strength, which guarantees the rigidity required for the working face of the entire grinding wheel.

10. A structural anti-flying structure is formed by providing a plurality of bosses on the pressing surface and interlocking with the corresponding limiting slots.

11. The circumferential arc length of the flake teeth is short, and the flake teeth are adapted to stack a variety of structures with the same diameter and the same ring height. It is not necessary to produce corresponding molds according to the diameter one by one, which greatly reduces the difficulty of feeding and the processing difficulty of the mold. It is conducive to the implementation of automated mass production.

12. It is convenient to realize the cooling mode of internal cold water supply in the grinding area.

13. It is convenient to realize the retention of cooling water between the working layer teeth and the teeth, and improve the cooling effect.

14. The cooling water between the flakes is integrated into one and communicates with the cooling water source, which is the capacity, cooling and chipping effect of the grinding wheel or the artificial perforation.

15. Using the above principle, it can also be applied to non-circular grinding tools such as grinding discs and grinding blocks.

16. Using the above principle, it can also be applied to grinding wheels such as grinding wheels or grinding discs and grinding blocks of other inorganic binders and organic binders, inorganic binders such as metal binders, ceramic binders, rhombohedral binders, and organic bonding. Agents, such as resin binders, rubber binders.

17. Using the above principle, it provides better chip and cooling functions, and transfers the functions required of the original abrasive body to the structural function. Therefore, for the elastic abrasive of the organic bonding agent, the self-sharpness is satisfied. Under the conditions, the porosity and elasticity of the abrasive tool can be moderately reduced, the ability to hold the abrasive can be enhanced, the life of the abrasive tool can be improved, and the application of high-speed and high-efficiency processing can be expanded.

18. Using the above principle, the product processing is reduced compared with the same year-on-year load, which can effectively reduce power consumption, save energy and protect the environment, and reduce costs.

DRAWINGS

1 is a front view of a grinding tool according to Embodiment 1 of the present invention;

Figure 2 is a cross-sectional view showing a grinding tool according to Embodiment 1 of the present invention;

Figure 3 is a plan view showing an arrangement of a plurality of sheet teeth in the first embodiment of the present invention;

Figure 4 is a top plan view of a grinding tool of the first embodiment of the present invention;

Figure 5 is a plan view of a grinding tool of the first embodiment of the present invention;

6 is a schematic structural view of a grinding tool according to a first embodiment of the present invention;

Figure 7 is a front elevational view of a grinding tool of the first embodiment of the present invention;

Figure 8 is a front elevational view of a grinding tool according to a second embodiment of the present invention;

9 is a schematic structural view of a grinding tool according to a second embodiment of the present invention;

Figure 10 is a schematic view showing an improvement of the grinding tool according to the second embodiment of the present invention;

Figure 11 is a front elevational view of a grinding tool according to Embodiment 3 of the present invention;

12 is a schematic structural view of a grinding tool according to a third embodiment of the present invention;

Figure 13 is a front elevational view of a grinding tool of the third embodiment of the present invention;

Figure 14 is a schematic view showing an improvement of the grinding tool according to the third embodiment of the present invention;

Figure 15 is a front elevational view of a grinding tool according to a fourth embodiment of the present invention;

Figure 16 is a schematic view showing the structure of a portion of the abrasive teeth of the fourth embodiment of the present invention;

Figure 17 is a front elevational view of a grinding tool of the fourth embodiment of the present invention;

Figure 18 is a front elevational view of a grinding tool according to a fifth embodiment of the present invention;

Figure 19 is a front elevational view of a portion of the first abrasive body and the second abrasive body of the fifth embodiment of the present invention;

Figure 20 is a plan view showing a portion of the first abrasive body and the second abrasive body of the fifth embodiment of the present invention;

Figure 21 is a schematic view showing the structure of a grinding tool according to Embodiment 6 of the present invention;

Figure 22 is a cross-sectional view showing a grinding tool according to a sixth embodiment of the present invention;

23 is a schematic structural view of a grinding tool according to a sixth embodiment of the present invention;

Figure 24 is a front elevational view of a grinding tool of the sixth embodiment of the present invention;

Figure 25 is a schematic view showing the structure of an abrasive article according to the seventh embodiment of the present invention;

Figure 26 is a cross-sectional view showing a grinding tool according to a seventh embodiment of the present invention;

Figure 27 is a front elevational view of a grinding tool according to a seventh embodiment of the present invention;

Figure 28 is a front elevational view of an abrasive article according to Embodiment 8 of the present invention;

Figure 29 is a cross-sectional view showing a grinding tool according to Embodiment 8 of the present invention;

Figure 30 is a schematic view showing the structure of a ring structure of the eighth embodiment of the present invention;

Figure 31 is a plan view showing a ring structure of the eighth embodiment of the present invention;

32 is a schematic view showing the structure of a ring structure of the eighth embodiment of the present invention;

Figure 33 is a schematic view showing the structure of a grinding tool according to the eighth embodiment of the present invention;

Figure 34 is a front elevational view of a grinding tool according to a second embodiment of the present invention;

Figure 35 is a cross-sectional view of a grinding tool according to a second embodiment of the present invention;

Figure 36 is a schematic view showing the structure of an abrasive article according to Embodiment 9 of the present invention;

Figure 37 is a front elevational view of a grinding tool in accordance with an embodiment 10 of the present invention;

Figure 38 is a schematic view showing the structure of an abrasive article according to Embodiment 10 of the present invention;

Figure 39 is a schematic view showing the structure of a ring structure according to the tenth embodiment of the present invention.

In the drawings, the list of parts represented by each label is as follows:

1. Base, 2, sheet teeth, sheet teeth A, sheet teeth B, sheet teeth C, sheet teeth D, sheet teeth E, sheet teeth F, 3, platen, 4, tank, 5, limit groove, 6, Filler, 7, first bump, 8, first relief, 9, groove, 10, second bump, 11, first abrasive body, 12, second abrasive body, 13, meshing position, 14, Grinding structure, 15, concave structure, 16, mounting bottom plate, 17, anti-fly structure, 18, third bump, 19 fourth bump.

detailed description

The principles and features of the present invention are described with reference to the accompanying drawings, which are intended to illustrate the invention and not to limit the scope of the invention.

Abrasive tools are used for grinding, grinding and polishing. They include diamond grinding wheels, ordinary abrasive grinding wheels and polishing wheels. The grinding tools can also be used in various forms such as grinding blocks and grinding discs. It can also be applied to diamond grinding wheels, general abrasive grinding wheels and polishing wheels.

Example 1:

As shown in FIG. 1 to FIG. 7, an abrasive tool comprises a base body 1 having a ring structure, a plurality of sheet teeth 2 and a pressure plate 3, and the base body 1 is provided with a limiting groove 5 disposed along the inner edge of the ring of the base body 1. a plurality of the laminating teeth 2 are radially stacked along the base body 1 to form an annular structure on the base body 1. The lower portions of the plurality of the laminating teeth 2 are embedded in the limiting slot 5; A groove body 4 is formed between upper portions of the sheet teeth 2; the pressure plate 3 has an annular structure, and the pressure plate 3 is connected to the base body 1 by bolts, and presses a plurality of the sheet teeth 2; a plurality of the sheets The upper portion of the tooth 2 is made of an abrasive layer made of diamond.

A plurality of individual thin teeth 2 are assembled and assembled into an abrasive body, and the abrasive body has a ring structure.

The tank body 4 is a water tank through which cooling water flows, a chip flute, or a function tank such as a flute or an air flow tank; wherein the tank body 4 is a radial type, an axial type, an inclined type, a circumferential type, a mesh type or a composite type.

Each face of the thin tooth piece 2 may be a flat surface or a curved surface, or may be a composite surface with a combination of embossing or concave, embossing or concave; or a surface having a perforation.

In various embodiments, the indented and embossed tabs of the sheet flanks 2 are in the form of a dot, block, line, strip or mesh format, and are also a combination of a dot, a block, a line, a strip and a mesh. The trough body 4 of each embodiment is composed of plain, concave, embossed or embossed composite lines on two adjacent thin flakes 2.

The grinding wheel size of this embodiment: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the ring width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm. The height of the sheet teeth 2 is 14 mm, wherein the height of the upper portion of the sheet teeth 2 is 8 mm, and the height of the lower portion of the sheet teeth 2 is 6 mm.

A plurality of the sheet teeth 2 are specifically 180 teeth, the width of the groove body 4 is 0.5 mm, and the average tooth width of the sheet teeth 2 is: ((152π-180*0.5)/180+(118π-180*0.5)/180) /2 = 1.856 mm.

The end face area of the grinding wheel is: 7210 square mm, the area of the groove body 4 is: 1530 square mm, and the ratio of the end face of the groove body 4 is: 21.2%.

The sheet teeth 2 are made by a powder metallurgy process, and the feeding direction surface and the main pressing surface are the same as the largest area. Since the average thickness of the sheet teeth 2 is only 1.856 mm, a simple one-way pressing can be used, and the existing mold is available. Preset overall production technology requires two-way pressing, the mold height is greatly reduced, and the feeding is simple and easy.

As shown in FIG. 2 to FIG. 7, the shape of the sheet teeth 2 is easy to assemble and consolidate, the sheet teeth 2 are stacked, and the solid structure is formed into a ring structure on the base body 1; After stacking, a groove body 4 is formed between upper portions of two adjacent sheet teeth 2, and the width of the groove body 4 is 0.5 mm;

A plurality of the sheet teeth 2 include a plurality of sheet teeth A and a plurality of sheet teeth B, a plurality of the sheet teeth A being alternately arranged with the plurality of sheet teeth B; or a plurality of elastic sheet teeth A and one elastic sheet teeth B interlaced Arranging; or a plurality of elastic sheet teeth A constitute elastic sheet teeth A group, a plurality of elastic sheet teeth B constitute elastic sheet teeth B group, elastic sheet teeth A group and elastic sheet teeth B group are staggered; sheet teeth A and sheets When the teeth B are adjacently combined, the lower portion of the sheet teeth A and the lower portion of the sheet teeth B constitute an interlocking structure.

The elastic sheet teeth A are made of a first bonding agent and an abrasive, and the elastic sheet teeth B are made of a second bonding agent and an abrasive. The first bonding agent and the elastic sheet made of abrasive have high hardness and long service life, and the elasticity of the second bonding agent and the abrasive is large and easy to be deformed, and the comprehensive effect can meet the cooling requirement during large pressure processing, and the polishing device has more Good life.

The pressure plate 3 is inclined near the end surface of the sheet tooth 2 and is closely adjacent to the end surface of the sheet tooth 2, and the pressure plate 3 is provided near the annular end surface of the sheet tooth 2 with a filling body 6 embedded in the pressure plate 3, The filling body 6 has plastic deformation ability, and the filling body 6 is made of aluminum alloy, copper alloy or the like; the pressing plate 3 is fixed on the base body 1 by bolts or glue, and the grinding wheel is processed by shaping and cutting to form a finished product.

Compare the prior art solutions:

Prior art solution 1. The prior art has a good level of preset mold making technology. The average width of the tank body 4 can be controlled at about 1.5 mm under the economical condition, and the tooth number is 64 teeth, and the average tooth width is: (( 152π-64*1.5)/64+(118π-64*1.5)/64)/2=5.127 mm; the area of the end face of the grinding wheel is: 7210 mm 2 , and the area of the trough body 4 is: 1632 mm 2 , the end face of the trough body 4 The proportion is: 22.6%.

Prior Art Solution 2: In the prior art, if the number of teeth is increased to 120 teeth, the average tooth width is: ((152π-120*1.5)/120+(118π-120*1.5)/120)/2=2.034 mm; The area of the end face is: 7210 mm 2 , the area of the groove body 4 is: 1632 mm 2 , and the ratio of the end face of the groove body 4 is: 42.4%. Obviously, according to the prior art scheme 2, due to the difficulty in manufacturing the width of the tank body 4, only the number of teeth is increased, the proportion of the tank body 4 is increased, and the physical space encroaching on the abrasive layer directly affects the tool life.

Comparison description:

The ratio of the tooth width of the prior art 1 to the tooth width of the present embodiment is 5.127/1.856 = 2.76 times, that is, the dust discharge path of the prior art one is 2.76 times that of the dust discharge path of the present embodiment. The ratio of the number of teeth of the present embodiment to the number of teeth of the prior art one is: 180/64 = 2.81 times, that is, the area of the circumferential circumferential cold surface of the present embodiment is equal to the area of the circumferential circumferential cold surface of the prior art. 2.81 times.

The manufacturing process of the product of the embodiment is difficult and simple, and the chip removal is fast, the cooling is good, the manufacturing is easy, and the performance is greatly improved. As shown in Fig. 8, the product of the present invention has no local support structure on the surface of the sheet teeth 2, so that it is more suitable for a grinding wheel which has a small amount of grinding and which does not require high strength of the sheet teeth 2.

Example 2:

As shown in FIG. 8 to FIG. 10, in the present embodiment, an abrasive tool comprises a base body 1 having a ring-shaped structure, a plurality of sheet teeth 2 and a pressure plate 3, and the base body 1 is provided with an inner edge along the inner ring of the base body 1. a plurality of the sheet teeth 2 are radially stacked along the base body 1 to form an annular structure on the base body 1. The lower portions of the plurality of the sheet teeth 2 are embedded in the limiting groove 5; A groove body 4 is formed between upper portions of two adjacent sheet teeth 2; the pressure plate 3 has an annular structure, and the pressure plate 3 is connected to the base body 1 by bolts, and presses a plurality of the sheet teeth 2 The upper portions of the plurality of sheet teeth 2 are made of an abrasive layer; the abrasive layer is made of diamond.

Each of the sheet teeth 2 is away from the end in the ring of the base body 1, and one side of the end portion is provided with a first projection 7 connected thereto.

The grinding wheel size of the embodiment: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the ring width of the grinding wheel is 17 mm, the height of the grinding wheel is 20 mm; the radial width of the first projection 7 is 2 mm, the first bump The protrusion height of 7 is 0.5 mm, and the first bump 7 has a partial supporting function for the adjacent two sheet teeth 2; the sheet teeth 2 have a tooth number of 180 teeth, and the groove body 4 has a width of 0.5 mm.

The sheet teeth 2 are made by a powder metallurgy process, and the feeding direction surface and the main pressing surface are the same as the largest area, and the simple one-way pressing is adopted; the shape of the sheet teeth 2 is easy to assemble and consolidate, and the sheet teeth 2 are spliced The stacked and solid structure is formed into a ring structure on the base body 1; after the plurality of the sheet teeth 2 are stacked, they are fixed to the base body 1 and processed by shaping and cutting to form a finished product.

Comparison description:

According to the technical solution of the embodiment of the present invention, the first bump 7 forms a partial support structure for the adjacent two sheet teeth 2, and is equivalent to the continuous tooth structure, eliminating the discontinuity due to the technical solution of the first embodiment. The bounce and impact caused by the grinding, the partial support structure is located at a plurality of outer diameters of the annular structure of the sheet metal 2; when processing, the first part of the grinding wheel of the embodiment is the outer diameter of the grinding wheel. Therefore, the impact strength of the sheet teeth 2 at the outer diameter is greatly enhanced, which is advantageous for rough grinding and strong processing.

In the technical solution of the embodiment of the present invention, when the plurality of sheet teeth 2 are stacked, the trough body 4 is formed to form an internal tooth structure, and the cooling water is more likely to stay in the trough body 4 to achieve a better cooling effect.

Example 3:

As shown in FIGS. 11 to 14, in the present embodiment, an abrasive article includes a base body 1 having a ring-shaped structure, a plurality of sheet teeth 2, and a pressure plate 3, and the base body 1 is provided with an inner edge of the ring of the base body 1 a plurality of the sheet teeth 2 are radially stacked along the base body 1 to form an annular structure on the base body 1. The lower portions of the plurality of the sheet teeth 2 are embedded in the limiting groove 5; a groove body 4 is formed between the upper portions of the two adjacent sheet teeth 2; the pressure plate 3 has an annular structure, the pressure plate 3 is connected to the base body 1 by bolts, and presses a plurality of the sheet teeth 2; The upper portions of the plurality of sheet teeth 2 are made of an abrasive layer; the abrasive layer is made of diamond; and each of the sheet teeth 2 is connected to a plurality of first ridges 8 on the side wall of the other sheet teeth 2 ;

The grinding wheel size of the embodiment: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the ring width of the grinding wheel is 17 mm, the height of the grinding wheel is 20 mm; the first ridge 8 is a vertical triangular pattern, and the triangular ridge is raised. The height is 0.6 mm, the plane formed by the apex of the triangular ridges of each of the sheet teeth 2 is 0.3 mm from the circumferential plane of the adjacent sheet teeth 2; the teeth of the sheet teeth 2 are 180 teeth, and the narrowest portion of the groove 4 is 0.3 mm.

The upper end portion of each of the sheet teeth 2 is provided with a plurality of grooves 9 each penetrating through the two end faces of the sheet teeth 2, and the grooves on the plurality of sheet teeth 2 are along different circumferential radii A plurality of circular through grooves are arranged and arranged, and the plurality of circular through grooves intersect with the plurality of grooves 4 to form a mesh structure to form a mesh surface.

An annular structure in which a plurality of sheet teeth 2 are stacked and assembled, and the cumulative circumferential length of the abrasive layer on the upper portion of the sheet teeth 2 contained in the radial direction is uneven and fluctuating, the abrasive layer The shorter the total circumferential length of the cumulative circumference, the easier it is to wear first, and each of the laminar teeth 2 forms a groove 9 formed on the upper end of the laminar tooth 2 due to rapid wear along the circumference of each point on the radial direction of the annular structure. The drainage can shorten the discharge path of the dust in the radial direction; the groove 9 and the adjacent groove 4 form a mesh structure, forming a mesh grinding surface, and improving the effect of cooling and chip removal, once the groove 9 is formed, It always exists until the abrasive layer is consumed. The plurality of grooves 9 have the same diameter and constitute a ring structure; the plurality of grooves 9 have different diameters, and the plurality of grooves 9 are distributed in sections on a part of the ring, which acts as an axial micro-frequency vibration type grinding.

Comparison description:

Compared with the prior art, the mesh surface formed by the wear of the groove 9 is formed, and the mesh grinding surface is formed, which avoids the prior art to manufacture the circumferential groove by the integral molding of the mold. The influence of the strength maintains the strength of the sheet teeth 2, greatly improving the heat dissipation capability of the grinding wheel, and making the grinding wheel more suitable for high speed machining. This structure is of great significance for the development of grinding tools without cooling water, and its structural principle is also suitable for the application of grinding blocks on various abrasive discs.

Example 4:

As shown in FIGS. 15 to 17, in the present embodiment, an abrasive tool includes a base body 1 having a ring-shaped structure, a plurality of sheet teeth 2, and a pressure plate 3, and the base body 1 is disposed with an inner edge of the ring of the base body 1 a plurality of the sheet teeth 2 are radially stacked along the base body 1 to form an annular structure on the base body 1. The lower portions of the plurality of the sheet teeth 2 are embedded in the limiting groove 5; a groove body 4 is formed between the upper portions of the two adjacent sheet teeth 2; the pressure plate 3 has an annular structure, the pressure plate 3 is connected to the base body 1 by bolts, and presses a plurality of the sheet teeth 2; An upper portion of the plurality of sheet teeth 2 is made of an abrasive layer; the abrasive layer is made of diamond; a plurality of second bumps 10 are connected to one side wall of each of the sheet teeth 2, and a plurality of second The bump 10 is circular or semi-circular.

The grinding wheel size of this embodiment: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the ring width of the grinding wheel is 17 mm, the height of the grinding wheel is 20 mm; the height of the protrusion of the second projection 10 is 0.4 mm, and the diameter is 1 mm. The apex of the plurality of second bumps 10 of the sheet teeth 2 contacts the adjacent sheet teeth 2, and the adjacent two sheet teeth 2 are supported by the plurality of second bumps 10;

The number of teeth of the sheet tooth 2 is 240 teeth, and the width of the groove body 4 is 0.4 mm, and the average tooth width is: ((152π-240*0.4)/240+(118π-240*0.4)/240)/2= 1.367 mm.

The area of the end face of the grinding wheel is: 7210 square mm, the area of the groove body 4 is about: 1632 square mm, and the proportion of the end face of the grinding wheel 4 is 22.6%.

Compare the aforementioned technology products:

The prior art solution 1 has a good level of the existing mold pre-finishing manufacturing technology. The average width of the trough body 4 can be controlled at about 1.5 mm under the economical condition, and the tooth number is 64 teeth, and the average tooth width is: (( 152π-64*1.5)/64+(118π-64*1.5)/64)/2=5.127 mm; the end surface area of the grinding wheel is: 7210 mm 2 , and the area of the trough body 4 is about: 1632 mm 2 . The ratio is: 22.6%.

The ratio of the tooth width of the prior art 1 to the tooth width of the embodiment is 5.127/1.367=3.75 times, that is, the dust discharge path of the prior art one is 3.75 times that of the dust discharge path of the embodiment, and the powder The chip discharge path is the groove body 4; the ratio of the number of teeth in the embodiment to the number of teeth of the prior art one is 240/64=3.75 times, that is, the tooth circumferential cold surface area of the embodiment is equal to the prior art one. The tooth circumferential direction is 3.75 times the area of the cold surface.

The average thinness of the sheet teeth 2 of the present embodiment is 1.367 mm, and the sheet teeth 2 are in contact with the planes of the adjacent sheet teeth 2 by the second bumps 10 to achieve mutual support, so that the rigidity of the grinding wheel is greatly improved; For example, a variety of bumps or grooves, or a composite structure of the two may be employed.

The calculation of the dust removal path of the technical solution of the present embodiment is reduced by 26.4% compared with the first embodiment. The circumferential cold surface area of the technical solution of the present embodiment is increased by 33.3% compared with the first embodiment. The diameter of the grinding wheel is 152 mm, the flake tooth 2 is 240 teeth, and the width of the trough 4 is 0.4 mm, which is difficult to accomplish with existing overall manufacturing techniques. Due to the above advantages, the present embodiment greatly expands the application space and application fields of the fine particle abrasive wheel.

Example 5:

As shown in FIG. 18 to FIG. 20, in the present embodiment, an abrasive tool includes a base body 1 having a ring-shaped structure, a plurality of sheet teeth 2, and a pressure plate 3, and the base body 1 is provided with an inner edge along the inner ring of the base body 1. a plurality of the sheet teeth 2 are radially stacked along the base body 1 to form an annular structure on the base body 1. The lower portions of the plurality of the sheet teeth 2 are embedded in the limiting groove 5; A groove body 4 is formed between upper portions of two adjacent sheet teeth 2; the pressure plate 3 has an annular structure, and the pressure plate 3 is connected to the base body 1 by bolts, and presses a plurality of the sheet teeth 2 The upper portions of the plurality of sheet teeth 2 are made of an abrasive layer; the abrasive layer is made of diamond.

A plurality of the sheet teeth 2 include a plurality of sheet teeth C and a plurality of sheet teeth D, and a plurality of sheet teeth C are successively stacked to form a first abrasive body 11, and a plurality of sheet teeth D are successively stacked to form a second abrasive body 12, A plurality of first abrasive bodies 11 and a plurality of second abrasive bodies 12 are alternately formed into a ring structure on the base body 1; a width of one end of the sheet teeth C near the base body 1 is greater than a width of the other end thereof, the sheet teeth The width of one end of D near the base 1 is smaller than the width of the other end.

The size of the grinding wheel of this embodiment: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm.

The number of teeth of the sheet teeth 2 is 180 teeth, the width of the groove body 4 is 1 mm at the widest point, and the narrowest portion is 0.5 mm; the five sheet teeth C are successively stacked to form the first abrasive body 11, and the five sheet teeth D are continuously stacked. The second abrasive body 12 is formed by interlacing 18 first

abrasive bodies

11 and 18 second abrasive bodies 12 into a ring structure on the base 1.

Compare the aforementioned technology products:

The technical solution of the present application consists of a plurality of sheet teeth C continuously assembling to form a first abrasive body 11, and a plurality of sheet teeth D are successively stacked to form a second abrasive body 12, and a plurality of first abrasive bodies 11 and a plurality of second abrasive bodies are formed. 12 interlaced into a ring structure on the substrate 1, forming a composite grinding ring, to achieve a dominant or recessive double or multi-ring structure.

The shape of the grinding surface of the first abrasive body 11 and the second abrasive body 12 is different, and the area of the inner ring portion and the outer ring portion of each segment of the composite grinding ring is different, and each of the first abrasive bodies 11 or the second When the abrasive body 12 works under different pressures and different wear, the dominant surface of the composite grinding ring has a dominant shape difference; if at the same time, the sheet teeth C and the sheet teeth D use different bonding agents, then the composite grinding The inner ring part and the outer ring part of each section of the ring will also cause different forces during grinding due to different performances. The grinding surface of the composite grinding ring will have a recessive force difference; the height difference and the strong The weak difference forms a radial and axial frequency vibration grinding, exhibiting a double-ring or multi-ring structural function, exerting or surpassing the technical effects of the prior art.

Example 6

As shown in FIGS. 21 to 24, in the present embodiment, an abrasive article includes a base body 1 having a ring-shaped structure, a plurality of sheet teeth 2, and a platen 3, and a plurality of the sheet teeth 2 are stacked along the base body 1. Forming an annular structure on the base body 1, and an abrasive end surface of the annular structure abuts against an edge of the base body 1; a middle portion between adjacent two of the sheet teeth 2 constitutes a groove body 4; The arc length of each point in the axial direction of the grinding structure 14 on the sheet tooth 2 is positively related to the processing amount at the point. The larger the processing amount at this point, the larger the amount of wear at this point, and the easier it is to wear out. Then, the circumferential arc length of the point is relatively longer, and when the processing amount at the point is smaller, the circumferential arc length of the point is relatively shorter, thereby achieving relatively balanced wear and improvement. The ability to resist deformation; the pressure plate 3 is annularly placed at the upper end of the base body 1, and the pressure plate 3 is coupled to the base body 1 by bolts and presses a plurality of the sheet teeth 2.

The grinding wheel size of this embodiment: the diameter of the grinding wheel is 150 mm, the ring structure of the grinding wheel has a ring width of 10 mm, the grinding wheel opening is 12 mm, and the workpiece is suitable for processing 10 mm, and the height of the grinding wheel is 23 mm.

When the grinding wheel is in contact with the workpiece, the narrowest portion of the groove body 4 is 0.2 mm.

The number of teeth of the grinding wheel is 276 teeth, and the average tooth circumferential working width is: ((150π-276*0.2)/276+(130π-276*0.2)/276)/2=1.394 mm.

The sheet teeth 2 are made by a powder metallurgy process, and the feeding direction surface and the main pressing surface are the same as the largest area. The average thickness of the sheet teeth 2 is only 1.394 mm, so that simple one-way pressing can be used. The mold pre-setting overall production technology requires two-way pressing, the mold height is greatly reduced, and the feeding is simple and easy. The shape of the sheet teeth 2 is easy to assemble and consolidate. After the plurality of the sheet teeth 2 are stacked, the middle portion between the two adjacent sheet teeth 2 constitutes the groove body 4. When the workpiece contacts, the groove body 4 The narrowest point is 0.2 mm; the side surface of the sheet tooth 2 near the inner end of the ring of the base body 1 is provided with an engaging position 13, and the adjacent two sheet teeth 2 are engaged with each other by the engaging position 13, and the lower end surface of the pressing plate 3 is pressed by the pressing plate The inner ring of the ring 3 is inclined downward to the outer ring, and the plurality of the flake teeth 2 are restrained to prevent a plurality of the flake teeth 2 from flying out during the grinding process; the auxiliary filling body 6 is used, and the auxiliary member and the bonding are utilized. A plurality of the sheet teeth 2 are fixed on the substrate 1 and processed by a shaped blade or the like to form a finished product.

One end of each of the sheet teeth 2 away from the ring of the base body 1 is provided with a grinding structure 14 which is adjacent to the end surface of the other sheet tooth 2 when corresponding to the need to grind the workpiece into a concave surface The upper structure is a embossed structure. When the workpiece corresponding to the workpiece is to be convex, each of the sheet teeth 2 is adjacent to the end surface of the other sheet tooth 2, and the grinding structure 14 is concave and convex. Or embossed composite lines.

Compare existing technology products:

The technical solution of the embodiment is difficult to manufacture, and the sheet teeth 2 which are difficult to manufacture by the whole preset are realized, and the narrow tooth structure which greatly shortens the discharge path of the dust is realized, and the tank body 4 which is rapidly cooled is realized, which is conveniently realized. In the grinding area, the internal cooling water supply cooling mode is dense, and the performance of the grinding wheel product is greatly improved.

Embodiment 7: As shown in FIGS. 25 to 27, in the present embodiment, an abrasive tool further includes a base body 1 and a pressure plate 3 in a ring structure, and a ring structure composed of a plurality of the sheet teeth 2 is fixed to the base body 1 The pressure plate 3 is in an annular structure, the pressure plate 3 is connected to the base body 1 by bolts, and presses a plurality of the sheet teeth 2;

A plurality of the troughs 4 are arranged in a ring shape along the annular structure, and each of the troughs 4 is relatively offset from the radial arrangement of the annular structure.

Example 8

As shown in FIGS. 28 to 33, in the present embodiment, an abrasive article includes a base body 1 having a ring-shaped structure, and a plurality of sheet teeth 2, and the base body 1 is provided with a limit disposed along the inner edge of the ring of the base body 1. a plurality of the sheet teeth 2 are radially stacked along the base body 1 to form an annular structure on the base body 1. The lower portions of the plurality of the sheet teeth 2 are embedded in the limiting groove 5, and are glued by glue. The base body 1 is formed on the base body 1; the upper part of the adjacent two of the sheet teeth 2 forms a groove body 4; in use, it is pressed on the mounting base plate 16 by a pressing plate, and is connected to the flange on the motor shaft through a bolt, and is pressed. A plurality of the sheet teeth 2 are housed; the upper portions of the plurality of sheet teeth 2 are made of an abrasive layer.

The abrasive layer is made of an organic binder, an inorganic binder or a composite binder and an abrasive, and the abrasive layer is provided with different amounts of porosity; the abrasive layer is also a working layer, and the inorganic binder is metal, ceramic or diamond soil. The organic binder is a resin or a rubber; the composite binder is a ceramic resin.

Each of the sheet teeth 2 is away from the end of the annular structure, and one side of the end portion is provided with a third bump 18 connected thereto; and a plurality of fourth bumps 19 are connected to one side wall of each of the sheet teeth 2, The plurality of fourth bumps 19 are circular or semi-circular; the adjacent two fringe teeth 2 are pressed against each other by the plurality of fourth bumps 19 to achieve mutual support.

In this embodiment, a plurality of bumps or grooves, or a composite structure of the two, may be used to form the mutual support or anti-fly structure 17.

The sheet teeth 2 are made of an organic binder, and the surface of the feeding direction and the main pressing surface are the same as the largest area, and simple unidirectional pressing is adopted; the shape of the sheet teeth 2 is easy to assemble and consolidate, and a plurality of sheet teeth are used. 2 is stacked, and the solid structure is formed into a ring structure on the base body 1; after being shaped and processed, the finished product is formed.

Adjacent two of the sheet teeth 2 are glued together by means of an adhesive.

Comparison description:

In the technical solution of the embodiment of the present invention, the plurality of fourth bumps 19 are pressed against each other; the rigidity of the organic bonding agent polishing wheel is satisfied, and the problem that the polishing wheel is poorly deformed and deformed after the slotting opening in the prior art is solved.

According to the technical solution of the embodiment of the present invention, the overall elasticity of the product can be adjusted to some extent by the structural shape, the number and the size of the fourth bump 19.

According to the technical solution of the embodiment of the invention, the overall heat resistance of the product is improved by the structural function, and the pore structure which needs to be placed inside the bonding agent can be replaced, the porosity is lowered, the ability to hold the abrasive is improved, and the high-speed and high-efficiency processing capability is greatly increased. improve.

Example 9

As shown in FIGS. 34 to 36, in the present embodiment, an abrasive article includes a base body 1 having a ring structure and a plurality of sheet teeth 2, and the sheet teeth 2 include a sheet tooth E and a sheet tooth F, and a plurality of sheet teeth E And a plurality of sheet teeth F are arranged in a staggered manner; the base body 1 is provided with a limiting groove 5 disposed along the inner edge of the ring of the base body 1; a plurality of the sheet teeth 2 are radially stacked along the base body 1 to form a ring structure; Between two adjacent sheet teeth 2, a groove body 4 is formed, that is, a groove body 4 is formed between the sheet teeth E and the sheet teeth F; a lower end portion of the annular structure is provided with an anti-flying structure 17, and a limiting groove 5 of the base body 1 Engaging with the anti-flying structure 17 on the annular structure, the annular structure is clamped and fixed together by the base body 1 and the pressing plate 3; a plurality of the laminating teeth 2 are pressed by the pressing plate 3; An abrasive layer is formed; the sheet teeth E are planar sheet teeth, and the sheet teeth F are wave-shaped sheet teeth, and the sheet teeth E and the sheet teeth F have the same circumferential thickness at each point in the axial direction, that is, the sheet teeth E It has the same total cumulative arc length as the circumferential teeth of the sheet teeth F, so that the grinding surface of the grinding wheel has better resistance during the grooving process. Shape capability.

Example 10:

37 to 39, in the present embodiment, an abrasive tool includes a base body 1 having a ring-shaped structure, and a plurality of sheet teeth 2, and the base body 1 is provided with a limiting groove disposed along the inner edge of the ring of the base body 1. 5; a plurality of the sheet teeth 2 are arranged in a radial direction along the radial direction of the base body 1 to form an annular structure, the annular structure is glued by an adhesive; between the two adjacent sheet teeth 2 constitute a tank body 4; An anti-flying structure 17 is disposed on an end surface of the annular structure; the annular structure is clamped and fixed together by the base body 1 and the pressing plate 3; the limiting groove 5 of the base body 1 is engaged with the anti-flying structure 17 on the annular structure, and passes through the pressing plate 3 A plurality of the sheet teeth 2 are pressed; a plurality of the sheet teeth 2 are made of an abrasive layer.

The invention also relates to a method for manufacturing an abrasive tool, comprising the following steps:

S1. Making the sheet teeth 2 according to the setting structure, so that the ratio of the radial average length of the sheet teeth 2 to the circumferential average width is greater than 2.5 times;

S3. The plurality of sheet teeth 2 are stacked and fixedly connected between the main pressing faces to form a ring structure.

In the above embodiment, the step S4 is further included: the plurality of sheet teeth 2 are fixed to the base 1 by the pressing plate 3 and the bolt.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

An abrasive tool comprising: a plurality of sheet teeth (2), wherein the plurality of sheet teeth (2) are sequentially stacked to form a ring structure, and two adjacent sheet teeth (2) are fixedly connected; adjacent A groove (4) is formed between the two sheet teeth (2).
A grinding tool according to claim 1, further comprising a base body (1) having an annular structure and a pressure plate (3), wherein the annular structure of the plurality of said sheet teeth (2) is fixed to the base body (1) Upper, the pressure plate (3) has an annular structure, and the pressure plate (3) is connected to the base body (1) by bolts, and presses a plurality of the sheet teeth (2).
An abrasive article according to claim 2, wherein a plurality of said sheet teeth (2) comprise a plurality of sheet teeth A and a plurality of sheet teeth B, and said plurality of sheet teeth A and a plurality of sheet teeth B Staggered arrangement; or a plurality of elastic sheet teeth A and one elastic sheet teeth B are alternately arranged; or a plurality of elastic sheet teeth A constitute elastic sheet teeth A group, a plurality of elastic sheet teeth B constitute elastic sheet teeth B group, elastic sheet teeth A The group is alternately arranged with the group of elastic sheet teeth B; when the sheet teeth A and the sheet teeth B are adjacently combined, the lower portion of the sheet teeth A and the lower portion of the sheet teeth B constitute an interlocking structure.
An abrasive article according to claim 3, wherein said elastic sheet teeth A are made of a first bonding agent and an abrasive, said elastic sheet teeth B being made of a second bonding agent and an abrasive.
A grinding tool according to claim 2, characterized in that: the base body (1) is provided with a limiting groove (5) arranged along the inner edge of the ring of the base body (1); a plurality of the sheet teeth (2) The lower portion is embedded in the limiting groove (5), and the upper portions of the plurality of the sheet teeth (2) are made of an abrasive layer.
An abrasive article according to claim 5, wherein said abrasive layer is made of diamond.
An abrasive article according to claim 2, characterized in that the end surface of the pressure plate (3) adjacent to the sheet teeth (2) is inclined and is in close contact with the end surface of the sheet teeth (2), the pressure plate (3) A filler body (6) embedded in the pressure plate (3) is disposed near the annular end surface of the sheet tooth (2).
A grinding tool according to claim 1 or 2, characterized in that a plurality of said troughs (4) are arranged in a ring shape along said annular structure, and each of said troughs (4) is relatively offset from said ring The radial arrangement of the structure.
A grinding tool according to any one of claims 2 to 7, characterized in that each of the sheet teeth (2) is away from the end in the ring of the base body (1), and one side of the end portion is provided with a first connection thereto A bump (7).
A grinding tool according to any one of claims 2 to 7, characterized in that each of the sheet teeth (2) is connected to a plurality of first ridges on the side wall of the other sheet teeth (2) (8) ).
A grinding tool according to any one of claims 2 to 7, characterized in that a plurality of second projections (10) are connected to one side wall of each of the sheet teeth (2).
A grinding tool according to any one of claims 2, 5, 6 or 7, wherein a plurality of said sheet teeth (2) comprise a plurality of sheet teeth C and a plurality of sheet teeth D, and a plurality of sheet teeth C successively stacks to form a first abrasive body (11), a plurality of sheet teeth D are successively stacked to form a second abrasive body (12), and a plurality of first abrasive bodies (11) and a plurality of second abrasive bodies (12) Interleavedly assembling the annular structure on the base body (1); the width of one end of the sheet tooth C near the base body (1) is larger than the width of the other end, and the width of the end of the sheet tooth D near the base body (1) is smaller than The width of the other end.
A grinding tool according to claim 2, characterized in that the end surface of the annular structure abuts against the edge of the base body (1); the pressure plate (3) is annularly placed on the base body (1) Upper end;

The sheet teeth (2) are provided with engaging positions (13) on the side wall of the inner end of the ring of the base body (1), and the adjacent two sheet teeth (2) are engaged with each other by the engaging position (13), the pressing plate (3) The lower end surface is inclined downward from the inside of the ring of the pressure plate (3) to the outside of the ring, and a plurality of the sheet teeth (2) are limited; each of the sheet teeth (2) is away from the base (1) ring The inner end is provided with a grinding structure (14).
A grinding tool according to claim 13, characterized in that the arc length of each point in the axial direction of the grinding structure (14) on the sheet tooth (2) is positively proportional to the amount of machining at that point.
A grinding tool according to claim 1, characterized in that the upper end portion of each of the sheet teeth (2) is provided with a plurality of grooves (9) in the radial direction of the annular structure, and the plurality of grooves (9) And forming a mesh structure with a plurality of tanks (4) to form a mesh surface.
A grinding tool according to claim 1, characterized in that two adjacent said sheet teeth (2) are fixedly connected by gluing and/or fasteners.
A grinding tool according to claim 1, characterized in that the bonding agent of the plurality of said sheet teeth (2) is an organic binder, an inorganic binder or a composite binder.
A grinding tool according to any one of claims 1 to 7, 13 to 17, wherein the grinding tool is a sheet-toothed diamond grinding wheel.
A method for manufacturing a grinding tool, comprising the steps of:

S1. Making the sheet teeth (2) according to the setting structure, so that the ratio of the radial average length of the sheet teeth (2) to the circumferential average width is greater than 2.5 times;

S2. The main pressing surface of the sheet teeth is made into a non-grinding working surface, and the main pressing surface is the surface with the largest sheet tooth area;

S3. A plurality of sheet teeth (2) are assembled and fixedly connected between the main pressing faces to form a ring structure.
A method of manufacturing a grinding tool according to claim 19, further comprising the step S4 of consolidating the plurality of sheet teeth (2) to the base body (1) by means of a pressure plate (3) and a bolt.