ES2983497T3 - Abrasive tool and manufacturing process thereof - Google Patents

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. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Abrasive tool and manufacturing process thereof

Technical field

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

Background

Metal bonded diamond grinding wheels are generally manufactured using a powder metallurgical sintering process.

To improve the sharpness of diamond wheel during machining, it is necessary to improve the chip-holding, chip-removal and cooling capabilities of diamond wheel during the working procedure. One effective way is to use a toothed wheel with slot bodies and employ an intermittent abrasion function (by impact) to increase the abrasion efficiency. The usual procedure is to establish some slot body structures that are beneficial for chip-removal (chip-holding) and water-holding (water-holding) on a diamond work layer and are typically implemented by one-time molding through a preset mold. Then, a tooth-shaped diamond wheel with slot bodies is manufactured.

The powder metallurgy process requires hot pressing and sintering through a mold. Therefore, the requirement for hot strength of the mold is high. Each slot body is generally formed by presetting a gate block made of graphite, cast iron, alloy and other materials into the mold and removing (pulling out) the gate block after hot pressing and sintering.

Gate blocks made of ordinary metals or alloys are required not to be easily deformed and not to be easily broken when removing (tearing off) a mold. A graphite block is brittle. To meet the strength requirements, a gate block must have sufficient solid cross-sectional areas in all directions, especially on a main pressure bearing surface. Thus, the gate block inevitably has a large volume which causes a large interval between diamond teeth (i.e., the width of each groove body is large). A large groove body width is advantageous for cooling a material to be machined, but it plays a very limited role in the cooling effect of the diamond work layer. Therefore, in intermittent abrasion, the grinding wheel manifests itself by a large impact force and a large beating amplitude, thereby increasing the surface roughness of the workpiece.

In the case where the grinding wheel is limited in its geometric dimension, the larger the volume occupied by each groove body, and the larger the number of groove bodies, the smaller the volume of the diamond working layer. Therefore, when the volume of the gate block cannot be too small under the limitations of the manufacturing process conditions such as force. However, in order to ensure that the diamond working layer has a sufficient amount of volume (i.e., to ensure a sufficient service life), the number of the groove bodies provided is objectively limited, which in turn restricts the diamond working teeth from having a space in a circumferential direction to being thinner. Thus, a long circumferential chip removal path, a large amount of accumulated chips, and a large heat generation of the grinding wheel in operation occur. These situations are even worse in rapid feed or high speed machining. Generally, it is necessary to increase the diamond particle size to improve the chip retention space and alleviate the above situations, but increasing the particle size does not favor the reduction of the surface roughness of the workpiece.

The wider the groove, the smaller its quantity, the smaller the outer surface area (including an abrasive surface and a non-abrasive surface) of the working section entity of the grinding wheel, that is, the smaller the area acted upon by cooling water, the worse the cooling effect.

Metal bonded diamond grinding wheels are generally manufactured by powder metallurgy technology. In the high-temperature and high-pressure manufacturing process, the fluidity of metal powder (binder) is relatively poor. If the mold structure is too complex, the pressure transmission will be affected, resulting in uneven compaction of diamond grinding wheels and deviations in performance. Therefore, some complex structures cannot be manufactured by powder metallurgy technology. For some special structures, such as weak, pointed, long, fine or mesh-shaped teeth, under the condition of hot pressing, the performance of a mold material cannot meet the process requirements, so the manufacturing cannot be completed by preset molds or in an economical way.

Diamond grinding wheel products made by prior art process can realize small number of groove bodies and larger volume occupied by groove bodies through mold presetting, but it results in simple and coarse shapes of diamond teeth, and thus has very limited effect. If further machining process is adopted, it is often difficult to machine, resulting in increased cost.

With the continuous development of technology, high-quality, high-speed and high-efficiency machining is inevitable, and it is difficult for prior art products to keep up with the development.

DE 10 2006 026 285 A1, which forms the basis of the preamble of claim 1, describes an abrasive tool comprising inclined toothing on the circumferential tool body. The tooth is formed as a thread with spaces between two adjacent pieces. The spaces are arranged to guide cutting chips and coolant out of the abrasion zone. In order to guide the coolant into an adjacent space, a groove is arranged in a direction orthogonal to the toothing on the circumference, in which strips are arranged to catch the chips and guide the coolant.

KR 101 560 502 B1 describes a polishing wheel comprising a plurality of block-shaped polishing pads arranged in close contact with each other. The first polishing pad extends towards the centre of the polishing wheel. A plurality of second polishing pads which do not extend to the centre of the polishing wheel form the triangular cross-sectional gap between the first polishing pads.

DE 595219 C describes an abrasive tool with a plurality of teeth which are fixed in a plate body. The connection between the plurality of teeth and the plate body is made with an elastic binder to prevent vibrations. Each tooth is slotted, also to prevent vibrations, in order to file a smooth ground surface.

US 4,212,127 A1 discloses an annular segmented abrasive wheel, having a plurality of interchangeable composites. Each interchangeable composite material has a preformed abrasive segment and a relatively non-abrasive shell, in which the abrasive segment is embedded. The relatively non-abrasive shell is provided with a complex slot for connecting to a mandrel by engagement or clamping. The non-abrasive shell may also have a tongue or projection at its one end and at the other end a projection or tongue for interconnecting and abutting identical shell-segments.

JP 358196061 U describes an abrasive wheel, having a plurality of teeth arranged on a plate body. The teeth are arranged on the plate body to form an annular structure, so that the teeth slot into their adjacent tooth. The connection between the plate body and the tooth is made by a flexible binder, which enables the tooth to trace the abrasive surface.

The conditions described in the above technical background exist not only in metal bond grinding wheels, but also in ceramic bond, resin bond, rubber bond, organic bond diamond grinding wheels, or ordinary grinding wheels or polishing wheels. Similar problems will occur to these wheels regardless of whether they are provided with base bodies or not. The ceramic bond grinding wheel has good heat resistance, but the cooling of the workpieces is limited during high-speed and high-performance machining with a large abrasive contact area. Resin bond grinding wheels and rubber bond grinding wheels (including polishing wheels) have poor heat resistance, and need higher abrasive capacity during high-speed and high-performance machining, which requires a higher abrasive holding capacity and at the same time better cooling. However, high elasticity and porosity are not conducive to service life and rigidity. Various factors restrict each other, thus limiting the application of high-speed and high-efficiency machining.

Summary

The present invention is directed to providing an abrasive tool which is reliable in manufacturing process, optionally complex and simple in structure, feasible in function implementation, low in manufacturing cost, high in efficiency, energy-saving and safe, and a manufacturing process thereof.

The technical solution of the present invention to solve the above-mentioned technical problems is summarized as follows: an abrasive tool comprises a plurality of fine teeth which are sequentially spliced and stacked to form an annular structure, in which every two adjacent fine teeth are fixedly connected; and between every two adjacent fine teeth a groove body is formed.

Furthermore, the abrasive tool further includes a substrate in an annular structure, and a pressing plate, in which the annular structure formed by the plurality of the fine teeth is fixed on the substrate, the pressing plate has a ring-shaped structure, and the pressing plate is connected with the substrate by a bolt and presses the plurality of the fine teeth.

Furthermore, the plurality of fine teeth includes a plurality of fine teeth A and a plurality of fine teeth B, wherein the plurality of fine teeth A and the plurality of fine teeth B are arranged in a staggered manner; or a plurality of elastic fine teeth A and an elastic fine tooth B are arranged in a staggered manner; or a plurality of elastic fine teeth A constitute groups of elastic fine teeth A, and a plurality of elastic fine teeth B constitute groups of elastic fine teeth B, and the groups of elastic fine teeth A and the groups of elastic fine teeth B are arranged in a staggered manner; when the fine tooth A and the fine tooth B are adjacently combined, the lower portion of the fine tooth A and the lower portion of the fine tooth B constitute an interlocking structure.

Furthermore, the elastic fine teeth A are made of a first binder and a first abrasive, and the elastic fine teeth B are made of a second binder and a second abrasive.

Furthermore, the substrate is provided with a limiting groove disposed along the inner annular edge of the substrate; the lower portions of the plurality of fine teeth are embedded in the limiting groove, and the upper portions of the plurality of fine teeth are all made of an abrasive layer.

In addition, the abrasive layer is made of diamond.

Furthermore, an end face of the pressing plate proximate to the fine teeth is inclined and is made to match and is proximate to the end faces of the fine teeth, and a filler embedded in the pressing plate is arranged at a position of the pressing plate proximate to an annular end face of each fine tooth.

Furthermore, the plurality of groove bodies are arranged in an annular manner along the annular structure, and each of the groove bodies is offset from a radial direction of the annular structure.

Furthermore, at one end of each fine tooth remote from the inner annular side of the substrate, a first protrusion is provided on one side of the end in connection with the end.

Furthermore, a plurality of first convex textures are connected to the side wall of each fine tooth near another fine tooth.

Furthermore, a plurality of second protuberances are connected to the side wall of each fine tooth.

Furthermore, the plurality of fine teeth includes a plurality of fine teeth C and a plurality of fine teeth D, wherein a plurality of fine teeth C are continuously spliced and stacked to form a first abrasive body, a plurality of fine teeth D are continuously spliced and stacked to form a second abrasive body, and a plurality of first abrasive bodies and a plurality of second abrasive bodies are staggered to form an annular structure on the substrate; the width of one end of each fine tooth C proximate the inside of the substrate is greater than that of the other end of the fine tooth C, and the width of one end of each fine tooth D proximate the inside of the substrate is smaller than that of the other end of the fine tooth D.

In addition, the end face of the annular structure is tightly attached to the edge of the substrate; the pressing plate is annular in shape and is placed at the upper end of the substrate;

An engagement position is provided on the side wall of one end of each fine tooth near the inner annular side of the substrate, every two adjacent fine teeth mesh with each other through the engagement position, and the lower end face of the pressing plate is inclined downward from the inner annular side toward the outer annular side of the pressing plate to limit the plurality of fine teeth; one end of each of the fine teeth away from the inner annular side of the substrate is provided with an abrasion structure.

In addition, an arc length of each point of the abrasion structure on the fine tooth in an axial direction is in a positive relationship with a machining amount at this point.

Furthermore, the upper end of each fine tooth is provided with a plurality of grooves in a radial direction of the annular structure, and the plurality of grooves forms a mesh structure with the plurality of groove bodies to form an abrasion mesh surface.

Furthermore, every two adjacent fine teeth are firmly connected by gluing and/or by a fixing element. Furthermore, the connection for the plurality of fine teeth is an organic connection, an inorganic connection or a composite connection.

In addition, the abrasive tool is a fine-toothed diamond grinding wheel.

A manufacturing process for an abrasive tool includes the following steps:

51. manufacturing fine teeth according to a set structure, so that a ratio of an average radial length of each fine tooth to an average circumferential width thereof is greater than 2.5; 52. manufacturing a main pressing surface of each fine tooth as a non-abrasive working surface, wherein the main pressing surface is a surface with the largest area of the fine tooth; and

53. splicing and stacking and fixedly connecting the main pressing surfaces of the plurality of fine teeth to form an annular structure.

Furthermore, the manufacturing process further includes step S4: consolidating the plurality of fine teeth to a substrate through the pressing plate and the bolts.

The beneficial effects of the present invention are summarized as follows.

1. Under the condition that the volume of the abrasive working layer entity is not affected, the narrower and more groove bodies there are, the larger the external surface (including the abrasive surface and the non-ground surface) of the grinding wheel working layer entity, the larger the surface area acted upon by cooling water, and the better the cooling effect.

2. The greater the number of groove bodies and the smaller the circumferential width of each abrasive tooth, the shorter the chip removal path. The smaller the amount of accumulated chips, the less their friction with the abrasive body joints. Thus, the heat of abrasion is relatively low, which is conducive to high-speed and efficient machining and allows for expanded application of formulations that are not resistant to high temperatures.

3. Considering the large number of groove bodies, short chip removal path, small accumulated chip amount and small chip friction resistance, the required chip space is small, and the requirement for abrasive exposure height is low. This feature is also beneficial to obtain high-quality machining by using relatively finer abrasives, and furthermore, to obtain high-efficiency machining by using relatively faster operating speed or larger engagement.

4. Through structural machining on fine teeth, it is easy to realize that in the use of the abrasive layer, the abrasive surface is rapidly worn locally to form a circumferential broached groove, the broached groove forms a new groove body on the abrasive surface, and the new groove body forms a net groove body on the abrasive surface together with the groove body obtained by splicing and stacking, thus forming a mesh abrasive surface, which shortens the radial chip removal path, increases the pressure intensity of the abrasive surface during abrasion, and improves the sharpness and service life of the grinding wheel.

5. The abrasive tool is conducive to dry abrasion machining.

6. As the characteristics of manufacturing process, it is easy to achieve similar orderly arrangement structure of abrasive layers, which can improve the sharpness and service life of grinding wheel and is more suitable for rough abrasive machining.

7. The abrasive tool features a structural feature of double or multiple rings, which can exert or surpass the technical effect of the prior art.

8. The fine-toothed grinding wheel, which is difficult to machine as a whole, can be easily made by splitting it into individual fine teeth and splicing, stacking and consolidating them.

9. By arranging a plurality of densely packed protrusions on the pressed surface, every two adjacent fine teeth support each other, thus facilitating the achievement of greater resistance of the fine teeth against stress fracture, displacement and vibration when the fine teeth become finer in a circumferential direction, and ensuring the required rigidity throughout the working surface of the grinding wheel.

10. A structural structure for preventing peeling is formed by arranging the plurality of protrusions on the pressed surface to fit and interlock with the corresponding limiting grooves.

11. The circumferential arc length of each fine tooth is short. The fine teeth are adapted to be spliced and stacked with a variety of structures having a diameter equal to an annular width and an annular height, without being produced by manufacturing corresponding molds one by one according to the diameters, thus greatly reducing the feeding difficulty and machining difficulty of the molds, and being conducive to the implementation of automated mass production.

12. Dense internal water cooling is performed in an abrasion zone.

13. Cooling water retention is achieved between the teeth of the working layer and the cooling effect is improved.

14. The cooling water between the fine teeth penetrates fully and communicates with a cooling water source, thus achieving the effects of capacity, cooling and chip retention that are difficult to achieve through the pores of the grinding wheel or artificial holes.

15. Following the above principles, the abrasive tool can also be applied to non-annular abrasive tools such as abrasive discs and abrasive blocks.

16. Using the above principles, the abrasive tool can also be applied to other abrasive tools, such as grinding wheels or abrasive discs, and abrasive block, with inorganic binders, such as metal binders, ceramic binders or magnesite binders, and organic binders, such as resin binders or rubber binders.

17. Using the above principles, the abrasive tool provides better chip retention and cooling functions, and transfers the functions required by the original abrasive tool itself to structural functions. Therefore, for the elastic abrasive tool with an organic binder, the porosity and elasticity of the abrasive tool can be appropriately reduced, and the abrasive retention ability can be improved under the condition that the self-sharpening property is satisfied, which is conducive to prolonging the service life of the abrasive tool and expanding the application of high-speed and efficient machining.

18. Using the above principles, the machining load of a product is reduced compared with the same period. Therefore, the abrasive tool can effectively reduce energy consumption and cost, and is energy-saving and environmentally friendly.

Brief description of the drawings

FIG. 1 is a front view of an abrasive tool according to Embodiment 1 of the present invention; FIG. 2 is a sectional view of the abrasive tool according to Embodiment 1 of the present invention; FIG. 3 is a top view showing the arrangement of lower portions of a plurality of fine teeth in the abrasive tool according to Embodiment 1 of the present invention;

FIG. 4 is a top view of a fine tooth A in the abrasive tool according to Embodiment 1 of the present invention;

FIG. 5 is a top view of a fine tooth B in the abrasive tool according to Embodiment 1 of the present invention;

FIG. 6 is a schematic structural diagram of a part of the fine teeth in the grinding tool according to Embodiment 1 of the present invention;

FIG. 7 is a front view of a fine tooth in the abrasive tool according to Embodiment 1 of the present invention;

FIG. 8 is a front view of an abrasive tool according to Embodiment 2 of the present invention; FIG. 9 is a schematic structural diagram of a fine tooth portion in the abrasive tool according to Embodiment 2 of the present invention;

FIG. 10 is a schematic diagram of an improvement of the abrasive tool according to Embodiment 2 of the present invention;

FIG. 11 is a front view of an abrasive tool according to Embodiment 3 of the present invention; FIG. 12 is a schematic structural diagram of a fine tooth portion in the abrasive tool according to Embodiment 3 of the present invention;

FIG. 13 is a front view of a fine tooth in the abrasive tool according to Embodiment 3 of the present invention;

FIG. 14 is a schematic diagram of an improvement of the abrasive tool according to Embodiment 3 of the present invention;

FIG. 15 is a front view of an abrasive tool according to Embodiment 4 of the present invention; FIG. 16 is a schematic structural diagram of a fine tooth portion in the abrasive tool according to Embodiment 4 of the present invention;

FIG. 17 is a front view of a fine tooth in the abrasive tool according to Embodiment 4 of the present invention;

FIG. 18 is a front view of an abrasive tool according to Embodiment 5 of the present invention; FIG. 19 is a front view of a part of the first abrasive bodies and the second abrasive bodies in the abrasive tool according to Embodiment 5 of the present invention;

FIG. 20 is a top view of a part of the first abrasive body and the second abrasive body in the abrasive tool according to Embodiment 5 of the present invention;

FIG. 21 is a schematic structural diagram of an abrasive tool according to Embodiment 6 of the present invention;

FIG. 22 is a sectional view of the abrasive tool according to Embodiment 6 of the present invention; FIG. 23 is a schematic structural diagram of a fine tooth portion in the abrasive tool according to Embodiment 6 of the present invention;

FIG. 24 is a front view of a fine tooth in the abrasive tool according to Embodiment 6 of the present invention;

FIG. 25 is a schematic structural diagram of an abrasive tool according to Embodiment 7 of the present invention;

FIG. 26 is a sectional view of the abrasive tool according to Embodiment 7 of the present invention; FIG. 27 is a front view of a fine tooth in the abrasive tool according to Embodiment 7 of the present invention;

FIG. 28 is a front view of an abrasive tool according to Embodiment 8 of the present invention; FIG. 29 is a sectional view of the abrasive tool according to Embodiment 8 of the present invention; FIG. 30 is a schematic structural diagram of an annular structure in the abrasive tool according to Embodiment 8 of the present invention;

FIG. 31 is a top diagram of the annular structure in the abrasive tool according to Embodiment 8 of the present invention;

FIG. 32 is another schematic diagram of the annular structure in the abrasive tool according to Embodiment 8 of the present invention;

FIG. 33 is a schematic structural diagram of fine tooth in the abrasive tool according to Embodiment 8 of the present invention;

FIG. 34 is a front view of an abrasive tool according to Embodiment 9 of the present invention; FIG. 35 is a sectional view of the abrasive tool according to Embodiment 9 of the present invention; FIG. 36 is a schematic structural diagram of the abrasive tool according to Embodiment 9 of the present invention;

FIG. 37 is a front view of an abrasive tool according to Embodiment 10 of the present invention; FIG. 38 is a schematic structural diagram of the abrasive tool according to Embodiment 10 of the present invention;

FIG. 39 is a schematic structural diagram of an annular structure in the abrasive tool according to Embodiment 10 of the present invention.

In the drawings, the list of components indicated by individual reference symbols is as follows: 1. substrate; 2. fine tooth; fine tooth A; fine tooth B; fine tooth C; fine tooth D; fine tooth E; fine tooth F; 3. pressing plate; 4. groove body; 5. limit groove; 6. filler; 7. first protrusion; 8. first convex texture; 9. groove; 10. second protrusion; 11. first abrasive body; 12. second abrasive body; 13. meshing position; 14. abrasion structure; 15. concave texture structure 11. First abrasive body; 12. Second abrasive body; 13. Meshing position; 14. Abrasion structure; 15. Concave texture structure; 16. Mounting bottom plate; 17. Throw prevention structure; 18. Third protuberance; 19. Fourth protuberance.

Description of the achievements

The principles and features of the present invention will now be described with reference to the accompanying drawings. The examples provided are used only to explain the present invention, but not to limit the scope thereof.

Abrasive tools are grinding, milling and polishing tools, including diamond grinding wheels, ordinary grinding wheels and polishing wheels. Abrasive tools can also be of various shapes, such as grinding blocks and grinding discs. The technical solution for spliced fine-tooth diamond grinding wheels can also be applied to diamond grinding wheels, ordinary grinding wheels and polishing wheels.

Realization 1:

As shown in FIG. 1 to 7, an abrasive tool includes a substrate 1 in an annular structure, a plurality of fine teeth 2, and a pressing plate 3. The substrate 1 is provided with limiting grooves 5 arranged along the inner annular edge of the substrate 1. The plurality of fine teeth 2 are abutted and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1. The lower portions of the plurality of fine teeth 2 are embedded in the limiting groove 5. A groove body 4 is formed between the upper portions of each two adjacent fine teeth 2. The pressing plate 3 has an annular structure. The pressing plate 3 is attached to the substrate 1 by a bolt and presses the plurality of fine teeth 2. The upper portions of the plurality of fine teeth 2 are made of an abrasive layer. The abrasive layer is diamond.

A plurality of individual fine teeth 2 are overlapped and stacked and consolidated into an abrasive body having an annular structure.

The slot body 4 is a functional slot such as a water slot for cooling water circulation, a chip retention slot, or a chip removal slot or an air flow slot. The slot body 4 is of radial, axial, oblique, circumferential, grid or composite type.

Each surface of each fine tooth 2 may be a flat surface or a curved surface, and may also be a composite surface with convex textures or concave textures, or a combination of convex and concave textures; or a surface with perforations.

In each embodiment, the concave and convex textures on the surface of each fine tooth 2 are set in a dot, block, line, strip, or grid type, or a composite of dot, block, line, strip, and grid types. The groove body 4 in each embodiment is composed of smooth textures, concave textures, convex textures, or a composite of concave and convex textures on two adjacent fine teeth 2.

The size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm. The height of each fine tooth 2 is 14 mm, the height of the upper portion of each fine tooth 2 is 8 mm, and the height of the lower portion of each fine tooth 2 is 6 mm.

The number of the plurality of fine teeth 2 is specifically 180, the width of the groove body 4 is 0.5 mm, and the average tooth width of each fine tooth 2 is: ((152n-180*0.5)/180+(118n-180*0.5)/180)/2 = 1.856 mm.

The area of the end face of the grinding wheel is 7210mm2, the area of the 4-slot body is 1530mm2, and the proportion of the 4-slot body on the end face is 21.2%.

Fine teeth 2 are manufactured by powder metallurgy technology. A feed direction surface and a main pressing surface of each fine tooth 2 are the same surfaces with the largest area. Since the average thickness of each fine tooth 2 is only 1.856 mm, simple one-way pressing is sufficient. Compared with the existing general mold preset manufacturing technology, which requires two-way pressing, the mold height is greatly reduced, and feeding is simple and easy.

As shown in FIG. 2 to 7, the fine teeth 2 can be easily assembled and consolidated due to their shapes. The fine teeth 2 are spliced, stacked and consolidated to form the ring structure on the substrate 1.

After splicing and stacking the plurality of fine teeth 2, a groove body 4 is formed between the upper portions of every two adjacent fine teeth 2, and the width of the groove body 4 is 0.5 mm.

The plurality of fine teeth 2 includes a plurality of fine teeth A and a plurality of fine teeth B. The plurality of fine teeth A and the plurality of fine teeth B are arranged in a staggered manner. Alternatively, a plurality of elastic fine teeth A and an elastic fine tooth B are arranged in a staggered manner. Alternatively, a plurality of elastic fine teeth A constitute groups of elastic fine teeth A, and a plurality of elastic fine teeth B constitute groups of elastic fine teeth B, and the groups of elastic fine teeth A and the groups of elastic fine teeth B are arranged in a staggered manner. When the fine tooth A and the fine tooth B are adjacently combined, the lower portion of the fine tooth A and the lower portion of the fine tooth B constitute an interlocking structure.

Elastic fine teeth A are made of a first binder and a first abrasive. Elastic fine teeth B are made of a second binder and a second abrasive. Elastic fine teeth A made of the first binder and the first abrasive have high hardness and long service life. Elastic fine teeth B made of the second binder and the second abrasive are highly elastic and easy to deform. The comprehensive effect can meet the cooling requirements during high-pressure machining. At the same time, a polishing device has a long service life.

The end face of the pressing plate 3 proximate to each fine tooth 2 is inclined and coincides with and is proximate to the end faces of the fine teeth 2. A filler 6 embedded in the pressing plate 3 is arranged at a position of the pressing plate 3 proximate to the annular end face of each fine tooth 2. The filler 6 has a plastic deformation capability, and is made of an aluminum alloy, a copper alloy and other materials. The pressing plate 3 is consolidated on the substrate 1 by a bolt or glue. The grinding wheel is subjected to further machining, such as profiling and sharpening, to form a finished product.

Existing technical solutions are compared with the product of the present embodiment.

In the existing technical solution 1: Under a good level of the existing global mold presetting manufacturing technology and economic conditions, the average width of the groove body 4 can be controlled at about 1.5mm, the number of teeth is 64, and the average width of teeth is: ((152n-64*1.5)/64+(118n-64*1.5)/64)/2=5.127mm; the area of the end face of the grinding wheel is 7210 square mm, the area of the groove body 4 is 1632 mm2, and the proportion of the groove body 4 on the end face is 22.6%.

In the existing technical solution 2: If the number of teeth of the existing technical solution is increased to 120, the average width of teeth is: ((152n-120*1.5)/120+(118n-120*1.5)/120)/2=2.034mm; the area of the end face of the grinding wheel is 7.210mm2, the area of the groove 4 body is 1.632mm2, and the proportion of the groove 4 body on the end face is 42.4%. Obviously, in the existing technical solution 2, due to the limitation of the manufacturing difficulty in the width of the groove 4 body, if only the number of teeth is increased, the proportion of the groove 4 body to occupy the entity space of the abrasive layer is increased, so that the service life of the tool will be directly affected.

A comparative description is made:

The ratio of the tooth width in the existing technical solution 1 to the tooth width in the present embodiment is 5.127/1.856=2.76 times, that is, the chip removal path in the existing technical solution 1 is 2.76 times of the chip removal path in the present embodiment. The ratio of the number of teeth in the present embodiment to the number of teeth in the existing technical solution is 1:180/64=2.81 times, that is, a circumferential cooling area of the teeth in the present embodiment is 2.81 times of a circumferential cooling area of the teeth in the existing technical solution 1.

The manufacturing process of the product of the present embodiment turns difficulty into simplicity, thereby achieving fast chip removal, good cooling effect, easy manufacturing and greatly improved performance. As shown in FIG. 8, there is no local support structure on the surface of each fine tooth 2 of the product of the present invention, so the abrasive tool of the present invention is more suitable for an abrasive wheel having a small amount of abrasion and low strength requirements for the fine teeth 2.

Realization 2:

As shown in FIG. 8 to 10, in the present embodiment, a grinding tool includes a substrate 1 in an annular structure, a plurality of fine teeth 2, and a pressing plate 3. The substrate 1 is provided with a limiting groove 5 disposed along the inner annular edge of the substrate 1. The plurality of fine teeth 2 are spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1. The lower portions of the plurality of fine teeth 2 are embedded in the limiting groove 5. A groove body 4 is formed between the upper portions of each two adjacent fine teeth 2. The pressing plate 3 has an annular structure. The pressing plate 3 is attached to the substrate 1 by a bolt and presses the plurality of fine teeth 2. The upper portions of the plurality of fine teeth 2 are made of an abrasive layer. The abrasive layer is diamond.

At one end of each fine tooth 2 remote from the inner annular side of the substrate 1, a first protrusion 7 is arranged on one side of the end in connection with the end.

The size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm. The radial width of the first protrusion 7 is 2 mm, the raised height of the first protrusion 7 is 0.5 mm, and the first protrusion 7 serves to locally support every two adjacent fine teeth 2; the number of the fine teeth 2 is 180, and the width of the groove body 4 is 0.5 mm.

The fine teeth 2 are manufactured by powder metallurgy technology. A feed direction surface and a main pressing surface of each fine tooth 2 are the same surfaces with the largest area, and one-way simple pressing is adopted. The fine teeth 2 can be easily assembled and consolidated due to their shapes. The fine teeth 2 are spliced, stacked and consolidated to form the ring structure on the substrate 1. After the plurality of fine teeth 2 are spliced and stacked, they are consolidated on the substrate 1 and subjected to further machining such as shaping and sharpening to form a finished tool product.

A comparative description is made:

In the technical solutions of the embodiments of the present invention, compared with the technical solution of Embodiment 1, the first protrusion 7 forms a local support structure for the corresponding two adjacent fine teeth 2, which is equivalent to a continuous tooth structure, thereby eliminating rebound and impact caused by intermittent abrasion. The local support structure is located on the outer diameter of the annular structure formed by the plurality of fine teeth 2. During machining, a part of the grinding wheel of the present embodiment near the outer diameter first contacts a workpiece. Therefore, the force of the fine teeth 2 against impact on the outer diameter is greatly improved, which is beneficial for roughing and wide-range machining.

According to the technical solution of the embodiment of the present invention, the groove bodies 4 are formed to form an internal tooth structure when the plurality of fine teeth 2 are spliced and stacked. Cooling water is more likely to remain in the groove bodies 4 to achieve a better cooling effect.

Realization 3:

As shown in FIG. 11 to 14, in the present embodiment, a grinding tool includes a substrate 1 in an annular structure, a plurality of fine teeth 2, and a pressing plate 3. The substrate 1 is provided with a limiting groove 5 disposed along the inner annular edge of the substrate 1. The plurality of fine teeth 2 are spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1. The lower portions of the plurality of fine teeth 2 are embedded in the limiting groove 5. A groove body 4 is formed between the upper portions of each two adjacent fine teeth 2. The pressing plate 3 has an annular structure. The pressing plate 3 is attached to the substrate 1 by a bolt and presses the plurality of fine teeth 2. The upper portions of the plurality of fine teeth 2 are made of an abrasive layer. The abrasive layer is diamond. A plurality of first convex textures 8 is connected to the side wall of each fine tooth 2 near another fine tooth 2.

The size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm; each first convex texture 8 is a vertical triangular texture, the raised height of the triangular texture is 0.6 mm.6 mm, and a distance between a plane formed by the vertex of a triangular texture projection of each fine tooth 2 and a circumferential plane of the adjacent fine tooth 2 is 0.3 mm; the number of the fine tooth 2 is 180, and the width of the narrowest portion of the groove body 4 is 0.3 mm.

The upper end portion of each fine tooth 2 is provided with a plurality of grooves 9. Each of the grooves 9 traverses two end faces of the corresponding fine tooth 2. The grooves of the plurality of fine teeth 2 are arranged along different circumferential radii to form a plurality of through circular grooves. The plurality of through circular grooves and the plurality of groove bodies 4 intersect to form a mesh structure, thereby forming a mesh abrasive surface.

In the annular structure formed by splicing and stacking and consolidating the plurality of fine teeth 2, on the circumference of each point in the radial direction, the accumulated total circumferential length of the abrasive layer of the upper portions of the fine teeth 2 contained therein is uneven and fluctuating. The shorter the accumulated total circumferential length of the abrasive layer, the easier it is to be worn first. Each fine tooth 2 is formed with grooves 9 at the upper end of the fine tooth 2 due to rapid abrasion on the circumference of each point in the radial direction of the annular structure. The grooves 9 can not only drain water, but also shorten the chip removal path in the radial direction. The grooves 9 and the adjacent groove bodies 4 form a mesh structure to form an abrasion mesh surface, thereby improving the cooling and chip removal effects. Once formed, the grooves 9 remain there until the abrasive layer is completely consumed. The plurality of grooves 9 may have the same diameter and form an annular structure. The plurality of grooves 9 may also have different diameters and are distributed in sections in a part of the annular shape to serve for axial micro-frequency vibration grinding.

A comparative description is made:

Compared with the prior art, the mesh abrasion surface, formed from the mesh structure formed by the grooves 9 due to abrasion, avoids the influence caused by the circumferential groove bodies manufactured in the prior art by global mold molding on the strength of the fine teeth, maintains the strength of the fine teeth 2, and greatly improves the heat dissipation capacity of the grinding wheel, thus making the grinding wheel more suitable for high-speed machining. This structure is of great significance for the development of water-free cooling abrasive machining tools, and has a structural principle suitable for the application of abrasive blocks on abrasive wheels with various abrasives.

Realization 4:

As shown in FIG. 15 to 17, in the present embodiment, a grinding tool includes a substrate 1 in an annular structure, a plurality of fine teeth 2, and a pressing plate 3. The substrate 1 is provided with a limiting groove 5 disposed along the inner annular edge of the substrate 1. The plurality of fine teeth 2 are spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1. The lower portions of the plurality of fine teeth 2 are embedded in the limiting groove 5. A groove body 4 is formed between the upper portions of each two adjacent fine teeth 2. The pressing plate 3 has an annular structure. The pressing plate 3 is attached to the substrate 1 by a bolt and presses the plurality of fine teeth 2. The upper portions of the plurality of fine teeth 2 are made of an abrasive layer. The abrasive layer is diamond. A plurality of second protuberances 10 that is circular or semicircular is connected to a side wall of each fine tooth 2.

The size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm; the raised height of the second protrusion 10 is 0.4 mm, and the diameter of the second protrusion 10 is 1 mm. The apex of the raised height of the plurality of second protrusions 10 of each fine tooth 2 contacts the adjacent fine teeth 2, and every two adjacent fine teeth 2 are abutted against each other by the plurality of second protrusions 10.

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

The area of the end face of the grinding wheel is 7.210 mm2, the area of the 4-slot body is about 1.632 mm2, and the proportion of the 4-slot body on the end face of the grinding wheel is 22.6%.

The above technical products are compared with the product of the present embodiment.

In the existing technical solution 1: Under a good level of the existing general mold presetting manufacturing technology and economic conditions, the average width of the groove body 4 can be controlled at about 1.5mm, the number of teeth is 64, and the average width of teeth is: ((152n-64*1.5)/64+(118n-64*1.5)/64)/2=5.127mm; the end face area of the grinding wheel is 7210mm2, the area of the groove body 4 is about 1632mm2, and the proportion of the groove body 4 on the end face is 22.6%.

The ratio of the tooth width of the existing technical solution 1 to the tooth width of the present embodiment is 5.127/1.367=3.75 times, that is, the chip removal path of the existing technical solution 1 is 3.75 times of the chip removal path of the present embodiment, wherein the chip removal path is only the groove body 4. The chip removal path of the existing technical solution 1 is 3.75 times of the chip removal path of the present embodiment. The ratio of the number of teeth of the present embodiment to the number of teeth of the existing technical solution 1 is 240/64=3.75 times, that is, the circumferential cooling area of the teeth of the present embodiment is 3.75 times of the circumferential cooling area of the teeth of the existing technical solution 1.

The average thickness of each fine tooth 2 in the present embodiment is 1.367 mm, and each fine tooth 2 is in contact with the plane of the adjacent fine teeth 2 through the corresponding second protrusion 10 to support each other, so that the rigidity of the grinding wheel is greatly improved. The present embodiment may adopt a variety of protrusions or grooves, or a composite structure of protrusions and grooves.

Compared with Embodiment 1, the chip removal path in the technical solution of the present embodiment is estimated to be reduced by 26.4%. The circumferential cooling surface in the technical solution of the present embodiment is estimated to be increased by 33.3%. The diameter of the grinding wheel is 152 mm, the number of teeth of each fine tooth 2 is 240, and the width of the groove body 4 is 0.4 mm, which is difficult to achieve with the existing general manufacturing technology. Due to the above advantages, the present embodiment greatly expands the application space and application fields of fine particle grinding wheels.

Realization 5:

As shown in FIG. 18 to FIG. 20 , in the present embodiment, an abrasive tool includes a substrate 1 in an annular structure, a plurality of fine teeth 2, and a pressing plate 3. The substrate 1 is provided with a limiting groove 5 disposed along the inner annular edge of the substrate 1. The plurality of fine teeth 2 are spliced and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1. The lower portions of the plurality of fine teeth 2 are embedded in the limiting groove 5. A groove body 4 is formed between the upper portions of each two adjacent fine teeth 2. The pressing plate 3 has an annular structure. The pressing plate 3 is attached to the substrate 1 by a bolt and presses the plurality of fine teeth 2. The upper portions of the plurality of fine teeth 2 are made of an abrasive layer. The abrasive layer is made of diamond.

The plurality of fine teeth 2 includes a plurality of fine teeth C and a plurality of fine teeth D, in which a plurality of fine teeth C are continuously spliced and stacked to form a first abrasive body 11, and a plurality of fine teeth D are continuously stacked to form a second abrasive body 12. A plurality of first abrasive bodies 11 and a plurality of second abrasive bodies 12 are staggered to form the annular structure on the substrate 1. The width of one end of each fine tooth C close to the inside of the substrate 1 is larger than that of the other end of the fine tooth C, and the width of one end of each fine tooth D close to the inside of the substrate 1 is smaller than that of the other end of the fine tooth D.

The size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 152 mm, the inner diameter of the grinding wheel is 118 mm, the annular width of the grinding wheel is 17 mm, and the height of the grinding wheel is 20 mm.

The number of teeth of each fine tooth 2 is 180, the width of the widest portion of the groove body 4 is 1 mm, and the width of the narrowest portion of the groove body is 0.5 mm; 5 fine teeth C are continuously spliced and stacked to form a first abrasive body 11, 5 fine teeth D are continuously stacked to form a second abrasive body 12. 18 first abrasive bodies 11 and 18 second abrasive bodies 12 are staggered to form the annular structure on the substrate 1.

The above technical products are compared with the product of the present embodiment.

In the technical solution of the present invention, a plurality of fine teeth C are continuously spliced and stacked to form a first abrasive body 11, a plurality of fine teeth D are continuously spliced and stacked to form a second abrasive body 12, and a plurality of first abrasive bodies 11 and a plurality of second abrasive bodies 12 are staggered to form the annular structure on the substrate 1 to form a composite abrasive ring, thereby achieving an explicit or implicit double-ring or multi-ring structure.

The shapes of the abrasive surfaces of the first abrasive body 11 and the second abrasive body 12 may be different, the areas of an inner annular portion and an outer annular portion of each segment of the composite abrasion ring may be different, and the pressure intensities and abrasions of the individual first abrasive bodies 11 or second abrasive bodies 12 during working may be different, so that the abrasive surface of the composite abrasion ring has an explicit difference in height and shape. If different bonds are used for the fine teeth C and the fine teeth D at the same time, the difference in performance of the inner annular portion and the outer annular portion of each segment of the composite abrasion ring will cause different forces during abrasion. The abrasive surface of the composite abrasion ring will have an implicit difference in resistance force. Both the height difference and the resistance difference form radial and axial frequency vibration grinding, thus presenting a structural function of double rings or multiple rings, and exerting or surpassing the technical effect of existing technical solutions.

Realization 6:

As shown in FIGS. 21 to 24, in the present embodiment, a grinding tool includes a substrate 1 in an annular structure, a plurality of fine teeth 2, and a pressing plate 3. The plurality of fine teeth 2 are spliced and stacked along the substrate 1 to form the annular structure on the substrate 1. The abrasive end face of the annular structure is closely attached to the edge of the substrate 1. A groove body 4 is formed at the center between each two adjacent fine teeth 2. An arc length of each point of an abrasion structure 14 on each fine tooth 2 in an axial direction is in a positive relationship with the machining amount at this point. The larger the machining amount at that point, the larger the wear amount at this point, the more likely wear and deformation are to occur. Therefore, the circumferential arc length at this point should be adjusted to be relatively longer. The smaller the machining amount at this point, the shorter the circumferential arc length set for this point. Therefore, relatively balanced wear is achieved to improve the deformation resistance capability. The pressing plate 3 is annular in shape and is positioned at the upper end of the substrate 1. The pressing plate 3 is attached to the substrate 1 by a bolt and presses the plurality of fine teeth 2.

The size of the grinding wheel in the present embodiment is as follows: the diameter of the grinding wheel is 150 mm; the annular width of the annular structure of the grinding wheel is 10 mm; the width of an opening of the grinding wheel is 12 mm, which is suitable for machining 10 mm workpieces; and the height of the grinding wheel is 23 mm.

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

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

The fine teeth 2 are manufactured by a powder metallurgy technology. A feed direction surface and a main pressing surface of each fine tooth 2 are the same surfaces with the largest area. Since the average thickness of each fine tooth 2 is only 1.394 mm, simple one-way pressing is sufficient. Compared with the existing general mold preset manufacturing technology, which requires two-way pressing, the mold height is greatly reduced, and feeding is simple and easy. The fine teeth 2 can be easily assembled and consolidated due to their shapes. After the plurality of fine teeth 2 are spliced and stacked, a groove body 4 is formed in the center between every two adjacent fine teeth 2. The width of the narrowest portion of the groove body 4 is 0.2 mm when it comes into contact with a workpiece. On the side wall of one end of each fine tooth 2, near the inner annular side of the substrate 1, there is an engagement position 13, and the two corresponding adjacent fine teeth 2 are engaged with each other through the engagement position 13. The lower end face of the pressing plate 3 is inclined downward from the inner annular side toward the outer annular side of the pressing plate 3 to limit the plurality of fine teeth 2, thereby preventing the plurality of fine teeth 2 from being thrown out during the abrasion process. With the aid of the filler bodies 6, the plurality of fine teeth 2 are consolidated on the substrate 1 by using auxiliary members, adhesives, etc. A finished tool product is formed after subsequent machining such as profiling and sharpening, etc.

At one end of each fine tooth 2, remote from the inner annular side of the substrate 1, an abrasion structure 14 is provided. When a workpiece to be ground has a concave surface, the end face of each fine tooth 2 proximate to another fine tooth 2 has a convex texture structure. When a workpiece to be ground has a convex surface, the end face of each fine tooth 2 proximate to another fine tooth 2 has a concave texture structure 15. The abrasion structure 14 may be a concave texture, a convex texture, or a concave-convex composite texture.

The prior art products are compared with the product of the present embodiment: according to the manufacturing method of the technical solution of the present embodiment, difficulty is turned into simplicity, fine teeth 2 which are difficult to be manufactured by general presetting can be manufactured, narrow tooth structure which greatly shortens chip removal path and groove bodies 4 for rapid cooling can be achieved. Therefore, dense internal water cooling in an abrasion area can be conveniently achieved, and product performances of the grinding wheel are greatly improved.

Realization 7:

As shown in FIG. 25 to 27, in the present embodiment, an abrasive tool further includes a substrate 1 in an annular structure, and a pressing plate 3. The annular structure formed by the plurality of fine teeth 2 is fixed on the substrate 1. The pressing plate 3 has a ring-shaped structure. The pressing plate 3 is attached to the substrate 1 by a bolt and presses the plurality of fine teeth 2.

A plurality of slot bodies 4 are arranged in an annular manner along the annular structure. Each of the slot bodies 4 is offset from a radial direction of the annular structure.

Realization 8:

As shown in FIG. 28 to 33, in the present embodiment, an abrasive tool includes a substrate 1 in an annular structure and a plurality of fine teeth 2. The substrate 1 is provided with a limiting groove 5 disposed along the inner annular edge of the substrate 1. The plurality of fine teeth 2 are abutted and stacked in a radial direction of the substrate 1 to form the annular structure on the substrate 1. The lower portions of the plurality of fine teeth 2 are embedded in the limiting groove 5 and bonded to the substrate 1 by glue. A groove body 4 is formed between the upper portions of each two adjacent fine teeth 2. When in use, the abrasive tool is pressed onto a lower mounting plate 16 by a pressing plate, is connected to a flange plate on a motor shaft by a bolt, and presses the plurality of fine teeth 2. The upper portions of the plurality of fine teeth 2 are made of an abrasive layer.

The abrasive layer consists of an organic binder, an inorganic binder or a composite binder and an abrasive. Different amounts of porosity are established in the abrasive layer. The abrasive layer is also a working layer. The inorganic bond is metallic, ceramic or magnesite. The organic bond is resin or rubber. The bonding composite is ceramic resin.

At one end of each fine tooth 2 remote from the annular structure, a third protrusion 18 is arranged on one side of the end in connection with the end. A plurality of fourth protrusions 19 which are circular or semicircular are connected to a side wall of each fine tooth 2. Every two adjacent fine teeth 2 are firmly pressed against each other by the plurality of fourth protrusions 19 to achieve mutual support.

In the present embodiment, a variety of protrusions or grooves, or a composite structure of protrusions and grooves may be used to form a mutual supporting structure or a peeling prevention structure 17.

The fine teeth 2 are made of an organic bond. A feed direction surface and a main pressing surface of each fine tooth 2 are the same surfaces with the largest area, so that simple unidirectional pressing is adopted. The fine teeth 2 can be easily assembled and consolidated due to their shapes. The plurality of fine teeth 2 are spliced, stacked and consolidated to form the ring structure on the substrate 1. After pose machining such as shaping, a finished tool is formed.

Every two adjacent fine teeth 2 are joined together by gluing with the aid of an adhesive.

A comparative description is made: In the technical solution of the embodiment of the present invention, when a plurality of fine teeth 2 are spliced and stacked, the groove bodies 4 are formed to form an internal toothed structure, such that the cooling water is more likely to remain in the groove bodies 4 to achieve a better cooling effect.

In the technical solution of the embodiment of the present invention, mutual pressed support is achieved by the plurality of fourth protrusions 19, so that the rigidity of a polishing wheel with an organic bond is satisfied to solve the problem in the prior art that the polishing wheel has poor rigidity and is easy to deform after being provided with grooves and pores.

In the technical solution in the embodiment of the present invention, the overall elasticity of the product can be adjusted to a certain extent by adjusting the shape of the structure, the number and the size of the fourth protrusions 19.

In the technical solution of the embodiment of the present invention, the overall thermal resistance of the product is improved by structural functions. A part of the pore structure which should originally be placed inside the binder can be replaced, so that the porosity is reduced, the abrasive retention capacity is improved, and the high-speed and high-efficiency machining capability is greatly improved.

Realization 9:

As shown in FIG. 34 to 36, in the present embodiment, an abrasive tool includes a substrate 1 in an annular structure 1, and a plurality of fine teeth 2. The fine tooth 2 includes fine teeth E and fine teeth F. A plurality of fine teeth E and a plurality of fine teeth F are arranged in a staggered manner. The substrate 1 is provided with a limiting groove 5 disposed along the inner annular edge of the substrate 1. The plurality of fine teeth 2 are abutted and stacked in a radial direction of the substrate 1 to form an annular structure. A groove body 4 is formed between every two adjacent fine teeth 2, that is, the groove body 4 is formed between each fine tooth E and the corresponding fine tooth F. The lower end portion of the annular structure is provided with a run-out prevention structure 17. The limiting groove 5 of the substrate 1 engages with the ejection prevention structure 17 of the annular structure. The annular structure is held and consolidated by the substrate 1 and the pressing plate 3. The pressing plate 3 presses the plurality of fine teeth 2. The plurality of fine teeth 2 is formed by an abrasive layer. The fine teeth E are flat fine teeth, and the fine teeth F are wavy fine teeth. Each fine tooth E and each fine tooth F have the same circumferential thickness at each point in the axial direction, that is, the accumulated total circumferential arc lengths of the fine tooth E and the fine tooth F are equal at the respective points in the axial direction, so that an abrasive surface of the grinding wheel has good deformation resistance in slotting machining.

Realization 10:

As shown in FIGS. 37 to 39, in the present embodiment, an abrasive tool includes a substrate 1 in an annular structure, and a plurality of fine teeth 2. The substrate 1 is provided with a limiting groove 5 disposed along the inner annular edge of the substrate 1. The plurality of fine teeth 2 are abutted and stacked in a radial direction of the substrate 1 to form an annular structure. The annular structure is bonded by an adhesive. A groove body 4 is formed between every two adjacent fine teeth 2. A peeling prevention structure 17 is provided on the end face of the annular structure. The annular structure is held and consolidated by the substrate 1 and the pressing plate 3. The limiting groove 5 of the substrate 1 engages with the flywheel structure 17 of the annular structure. The plurality of fine teeth 2 is pressed by the pressing plate 3. The plurality of fine teeth 2 are all made of an abrasive layer.

The present invention also relates to a manufacturing process for an abrasive tool, which includes the following steps:

in stage S 1: the fine teeth 2 are manufactured according to a set structure, so that the ratio of an average radial length of the fine teeth 2 to an average circumferential width of the fine teeth 2 is greater than 2.5;

In step S2: a main pressing surface of each fine tooth is manufactured as a non-abrasive working surface, where the main pressing surface is a surface with the largest area of the fine tooth; and

In step S3: the main pressing surface of the plurality of fine teeth 2 is spliced and stacked and fixedly connected to form an annular structure.

In the aforementioned embodiment, the manufacturing process may further include a step S4: the plurality of fine teeth 2 are consolidated to the substrate 1 through the pressing plate 3 and the bolts.

The above descriptions only refer to preferred embodiments of the present invention and are not intended to limit the present invention.

Claims (16)

1. An abrasive tool, comprising a plurality of fine teeth (2) which are sequentially overlapped and stacked to form an annular structure, in which every two adjacent fine teeth (2) are fixedly connected; and a groove body (4) is formed between every two adjacent fine teeth (2), in which the ratio between an average radial length of each fine tooth (2) and an average circumferential width thereof is greater than 2.5, comprising a substrate (1) in an annular structure, and a pressing plate (3), in which the annular structure formed by the plurality of the fine teeth (2) is fixed on the substrate (1), the pressing plate (3) has a ring-shaped structure, and the pressing plate (3) is connected with the substrate (1) by a bolt and presses the plurality of the fine teeth (2), wherein the plurality of fine teeth (2) comprises a plurality of fine teeth A and a plurality of fine teeth B, and the plurality of fine teeth A and the plurality of fine teeth B are arranged in a staggered manner; or a plurality of elastic fine teeth A and an elastic fine tooth B are arranged in a staggered manner; or a plurality of elastic fine teeth A constitute groups of elastic fine teeth A, a plurality of elastic fine teeth B constitute groups of elastic fine teeth B, and the groups of elastic fine teeth A and the groups of elastic fine teeth B are arranged in a staggered manner; when the fine tooth A and the fine tooth B are adjacently combined, the lower portion of the fine tooth A and the lower portion of the fine tooth B constitute an interlocking structure, characterized in that the elastic fine teeth A are made of a first binder and a first abrasive, and the elastic fine teeth B are made of a second binder and a second abrasive. 2. The abrasive tool according to claim 1, wherein the substrate (1) is provided with a limiting groove (5) disposed along the inner annular edge of the substrate (1); the lower portions of the plurality of fine teeth (2) are embedded in the limiting groove (5), and the upper portions of the plurality of fine teeth (2) are all made of an abrasive layer. 3. The abrasive tool according to claim 2, wherein the abrasive layer is diamond. 4. The abrasive tool according to claim 1, wherein an end face of the pressing plate (3) proximate the fine teeth (2) is inclined and coincides with and is proximate the end faces of the fine teeth (2), and a filler (6) embedded in the pressing plate (3) is arranged at a position of the pressing plate (3) proximate an annular end face of each fine tooth (2). 5. The abrasive tool according to claim 1, wherein a plurality of groove bodies (4) are arranged in an annular manner along the annular structure, and each of the groove bodies (4) is offset from a radial direction of the annular structure. 6. The abrasive tool according to any one of claims 1 to 5, wherein at one end of each fine tooth (2) remote from the inner annular side of the substrate (1), a first protrusion (7) is arranged in connection with the end to one side of the end. 7. The abrasive tool according to any one of claims 1 to 4, wherein a plurality of first convex textures (8) is connected to a side wall of each fine tooth (2) proximate another fine tooth (2). 8. The abrasive tool according to claim 6, wherein a plurality of second protuberances (10) are connected to a side wall of each fine tooth (2). 9. The abrasive tool according to any one of claims 1, 2, 3 and 4, wherein the plurality of fine teeth (2) comprises a plurality of fine teeth C and a plurality of fine teeth D, a plurality of fine teeth C are continuously spliced and stacked to form a first abrasive body (11), a plurality of fine teeth D are continuously spliced and stacked to form a second abrasive body (12), and a plurality of first abrasive bodies (11) and a plurality of second abrasive bodies (12) are staggered to form the annular structure on the substrate (1); the width of one end of each fine tooth C proximate the inside of the substrate (1) is greater than that of the other end of the fine tooth C, and the width of one end of each fine tooth D proximate the inside of the substrate (1) is smaller than that of the other end of the fine tooth D. 10. The abrasive tool according to claim 1, wherein the end face of the annular structure is firmly attached to the edge of the substrate (1); the pressing plate (3) is annular in shape and is positioned at the upper end of the substrate (1); An engagement position (13) is provided on the side wall of one end of each fine tooth (2) near the inner annular side of the substrate (1), every two adjacent fine teeth (2) mesh with each other through the engagement position (13), and the lower end face of the pressing plate (3) is inclined downward from the inner annular side toward the outer annular side of the pressing plate (3) to limit the plurality of fine teeth (2); one end of each of the fine teeth (2) away from the inner annular side of the substrate (1) is provided with an abrasion structure (14). 11. The abrasive tool according to claim 1, wherein the upper end of each fine tooth (2) is provided with a plurality of grooves (9) in a radial direction of the annular structure, and the plurality of grooves (9) forms a mesh structure with the plurality of groove bodies (4) to form an abrasion mesh surface. 12. The abrasive tool according to claim 1, wherein every two adjacent fine teeth (2) are fixedly connected by gluing and/or a fixing element. 13. The abrasive tool according to claim 1, wherein the bond for the plurality of fine teeth (2) is an organic bond, an inorganic bond or a composite bond. 14. The abrasive tool according to any one of claims 1 to 4, and 10 to 13, wherein the abrasive tool is a fine-toothed bonded diamond grinding wheel. 15. A method of manufacturing an abrasive tool, according to one of claims 1 to 14, comprising the following steps: S1. manufacturing fine teeth (2) according to a set structure so that a ratio of an average radial length of each fine tooth (2) to an average circumferential width thereof is greater than 2.5; S2. manufacturing a main pressing surface of each fine tooth as a non-abrasive working surface, wherein the main pressing surface is a surface with the largest area of the fine tooth; and S3. splicing and stacking and fixedly connecting the main pressing surfaces of the plurality of fine teeth (2) to form an annular structure, wherein a groove body (4) is formed between every two adjacent teeth (2). 16. The method of manufacturing the abrasive tool according to claim 15, further comprising step S4: consolidating the plurality of fine teeth (2) to the substrate (1) by means of a pressing plate (3) and bolts.