Elastic abrasive block for a grinding disc used to optimize the ground and polished ceramic surface

Abstract

A control method for a grinding disc used to optimize the ground and polished ceramic surface and its elastic grinding block. The method includes the steps of: providing at least one grinding foot and at least one elastic module for the grinding disc, and making the grinding foot detachably connected to the elastic grinding block; providing a controller, making it electrically connected to the grinding foot, detecting the contact pressure between the elastic grinding block and the ceramic surface and measuring the wear degree of the elastic grinding block through the controller, and when the contact pressure is not within a predetermined pressure threshold, and / or the wear degree exceeds a predetermined wear threshold, the controller adjusts the operating parameters of the grinding disc. The present invention not only helps to achieve better grinding and polishing effects and quality, but also helps to protect the tool head from being dragged and damaged.

Description

Technical Field

[0001] The present invention belongs to the technical field of ceramic processing equipment, and relates to an elastic grinding block for a grinding disc used to optimize the grinding and polishing of the ceramic surface. Background Art

[0002] In the field of ceramic processing, when the grinding block of the grinding disc is working, the large head of the clamping plate faces inward, and the small head of the clamping plate faces outward. After starting the grinding disc, the grinding disc rotates at a high speed, driving the grinding block installed on the grinding disc to grind and polish on the surface of the ceramic tile, so as to achieve the effect of evenly grinding and polishing the uneven glaze layer on the surface of the ceramic tile to a flat and smooth state.

[0003] When the grinding disc rotates, the consumption ratios of the grinding cutter heads of the grinding blocks on the inner side and the outer side of the grinding disc are different. The outer side grinds quickly, and the inner side grinds slowly. This causes asynchronous grinding. When the grinding cutter head on the outer side is completely worn out, the grinding cutter head on the inner side of the grinding disc still has a thickness of 2-3 mm. At this time, it is easy to cause grinding marks or damage on the surface of the ceramic tile, resulting in production losses. In addition, when the grinding cutter head on the inner side of the grinding disc is working, the resistance and torque generated are greater than those of the grinding cutter head on the outer side of the grinding disc. In this way, it accelerates the risk of the grinding cutter head on the inner side of the grinding disc being dragged and damaged. Once the grinding cutter head on the inner side of the grinding disc is dragged and damaged, it will immediately cause grinding marks on the surface of the ceramic tile and production losses.

[0004] The above information disclosed in the background art section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention discloses a control method for a grinding disc used to optimize the grinding and polishing of the ceramic surface, which includes the following steps:

[0006] S100: Set at least one grinding foot and at least one elastic grinding block for the grinding disc, and make the grinding foot detachably connected to the elastic grinding block;

[0007] S200: Set a controller electrically connected to the grinding foot so that when the elastic grinding block on the grinding foot is working, the elastic grinding block grinds and polishes the ceramic surface; and, the controller detects the contact pressure between the elastic grinding block and the ceramic surface and measures the wear degree of the elastic grinding block. When the contact pressure is not within the predetermined pressure threshold, and / or the wear degree exceeds the predetermined wear threshold, the controller adjusts the operating parameters of the grinding disc.

[0008] Preferably, in step S200,

[0009] When the wear degree exceeds the predetermined wear threshold to a preset specified state, further use the controller to send a stop signal to stop the operation of the grinding disc and send a warning signal.

[0010] Preferably, in step S200,

[0011] When the wear degree exceeds the predetermined wear threshold to a preset specified state, the controller automatically raises and stops rotating and working, notifies the operator to replace a new elastic grinding block to the position where the grinding feet of the grinding disc are located, and restarts the controller after replacement.

[0012] In addition, the present invention also discloses an elastic grinding block for optimizing a grinding disc for grinding and polishing the surface of ceramics. The elastic grinding block includes

[0013] An elastic buffer layer;

[0014] A clamping plate, which is laminated on the lower surface of the elastic buffer layer. The clamping plate includes a first end located on the inner side of grinding and a second end located on the outer side of grinding. The extending direction from the first end to the second end is the length direction of the clamping plate;

[0015] A plurality of first grinding heads, which are fixedly arranged on the lower surface of the first end of the clamping plate in an array along the length direction of the clamping plate. The width of the first grinding head gradually becomes thicker and then gradually becomes thinner along the length direction of the first grinding head;

[0016] A plurality of second grinding heads, which are fixed on the lower surface of the clamping plate. The second grinding heads extend towards the second end along the arrangement direction of the first grinding heads. The included angle between the length direction of the second grinding heads and the length direction of the clamping plate is greater than the included angle between the length direction of the first grinding heads and the length direction of the clamping plate. The width of the second grinding heads gradually becomes thinner along the length direction of the second grinding heads;

[0017] A plurality of third grinding heads, which are fixedly arranged on the lower surface of the clamping plate and are located between the second grinding heads. The arrangement direction of the third grinding heads is parallel to the arrangement direction of the first grinding heads and parallel to the arrangement direction of the second grinding heads.

[0018] Preferably,

[0019] The projection length of the first grinding head in the length direction of the clamping plate is the first longitudinal projection length, and the projection length of the first grinding head in the direction perpendicular to the length direction of the clamping plate is the first transverse projection length;

[0020] The projection length of the second grinding head in the length direction of the clamping plate is the second longitudinal projection length, and the projection length of the second grinding head in the direction perpendicular to the length direction of the clamping plate is the second transverse projection length;

[0021] Wherein,

[0022] The length of the first grinding cutter head is greater than that of the second grinding cutter head, the first longitudinal projection length is less than that of the second longitudinal projection length, and the first transverse projection length is greater than that of the second transverse projection length.

[0023] Preferably,

[0024] The first grinding cutter head has a first cross-sectional area in a direction parallel to the lower surface of the clamping plate;

[0025] The second grinding cutter head has a second cross-sectional area in a direction parallel to the lower surface of the clamping plate;

[0026] The third grinding cutter head has a third cross-sectional area in a direction parallel to the lower surface of the clamping plate;

[0027] Wherein,

[0028] On a cross-section parallel to the lower surface of the clamping plate, the first cross-sectional area is less than the sum of the second cross-sectional area and the third cross-sectional area.

[0029] Preferably,

[0030] The angle between the length direction of the first grinding cutter head and the length direction of the clamping plate is 45° to 90°.

[0031] Preferably,

[0032] The angle between the length direction of the second grinding cutter head and the length direction of the clamping plate is 85° to 90°.

[0033] Preferably,

[0034] The first cross-sectional area, the second cross-sectional area, and the third cross-sectional area all gradually decrease in a direction away from the lower surface of the clamping plate.

[0035] Preferably,

[0036] Reinforcement layers are respectively provided at the joints of the first grinding cutter head, the third grinding cutter head, and the third grinding cutter head with the clamping plate.

[0037] Preferably,

[0038] The first grinding cutter head, the third grinding cutter head, and the third grinding cutter head are made of an elastic wear-resistant material.

[0039] Preferably,

[0040] The third grinding cutter head is a regular quadrangular prism that gradually decreases in a direction away from the lower surface of the clamping plate.

[0041] Preferably,

[0042] An uneven structure for detachably connecting a grinding foot is provided on one side of the elastic buffer layer relative to the clamping plate.

[0043] Compared with the prior art, the present invention has the following advantages:

[0044] 1. For the control method of the grinding disc used for optimizing the grinding and polishing of the ceramic surface, the controller uses the grinding feet to detect and control the elastic grinding block. The controller detects the contact pressure between the elastic grinding block and the ceramic surface and measures the wear degree of the elastic grinding block. When the contact pressure is not within the predetermined pressure threshold, and / or the wear degree exceeds the predetermined wear threshold, the controller adjusts the operating parameters of the grinding disc.

[0045] 2. The present invention further proposes to optimize the shape of the grinding cutter head on the inner side of the grinding disc, which not only facilitates the better control of grinding and polishing by the control method, but also increases the included angle when the grinding cutter head contacts the ceramic surface, reduces the generation of grinding resistance and torque, and well protects the cutter head from being dragged and worn, and synchronizes the wear degree of the inner and outer grinding cutter heads, which is also beneficial to achieving better grinding and polishing effects and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] By reading the detailed description of the preferred specific embodiments below, various other advantages and benefits of the present invention will become clear to those of ordinary skill in the art. The accompanying drawings in the specification are only for the purpose of showing the preferred embodiments and are not considered as limiting the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Moreover, throughout the drawings, the same reference numerals are used to represent the same components.

[0047] In the drawings:

[0048] Figure 1 is a schematic flow chart of the control method according to an embodiment of the present invention;

[0049] Figure 2 is an exemplary structural schematic diagram of the corresponding grinding disc in the control method according to an embodiment of the present invention;

[0050] Figure 3 is a schematic bottom view of the corresponding grinding disc in the control method according to an embodiment of the present invention;

[0051] Figure 4 is a simulation schematic diagram of the corresponding grinding disc in the control method according to an embodiment of the present invention;

[0052] The reference numerals are as follows:

[0053] 1 - elastic buffer layer;

[0054] 2 - clamping plate;

[0055] 3 - First grinding cutter head;

[0056] 4 - Second grinding cutter head;

[0057] 5 - Third grinding cutter head;

[0058] 6 - Reinforcement layer;

[0059] 7 - Foot grinder.

[0060] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments. Specific embodiments

[0061] The following will refer to the attached Figures 1 to 4 The specific embodiments of the present invention will be described in more detail. Although specific embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be fully conveyed to those skilled in the art.

[0062] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different terms to refer to the same component. The specification and claims do not distinguish components by the difference in terms, but by the difference in functions of the components. As used throughout the specification and claims, the term "comprising" or "including" is an open-ended term and should be interpreted as "including but not limited to". The following description is a preferred embodiment for implementing the present invention, but the description is for the purpose of the general principles of the specification and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be defined by the appended claims.

[0063] For the convenience of understanding the embodiments of the present invention, the following will take specific embodiments as examples and further explain with reference to the accompanying drawings, and the accompanying drawings do not constitute a limitation to the embodiments of the present invention.

[0064] See Figure 1 , in one embodiment, the present invention discloses a control method for a grinding disc used to optimize the grinding and polishing of a ceramic surface, characterized in that it includes the following steps,

[0065] S100. Set at least one foot grinder and at least one elastic grinding block for the grinding disc, and make the foot grinder detachably connected to the elastic grinding block;

[0066] S200. Set a controller to electrically connect the grinding foot so that the elastic grinding block on the grinding foot grinds and polishes the ceramic surface when working; and detect the contact pressure between the elastic grinding block and the ceramic surface and measure the wear of the elastic grinding block through the controller. When the contact pressure is not within a predetermined pressure threshold and / or the wear exceeds a predetermined wear threshold, the controller adjusts the operating parameters of the grinding disc.

[0067] For the above embodiment, it can be understood that, typically, the controller may include a pressure sensor for detecting the contact pressure between the elastic grinding block and the ceramic surface and a detection unit for measuring the wear of the elastic grinding block, so that the above embodiment uses the controller to detect and control the elastic grinding block through the grinding foot, the controller detects the contact pressure between the elastic grinding block and the ceramic surface and measures the wear of the elastic grinding block, and when the contact pressure is not at a predetermined pressure threshold, and / or the wear exceeds a predetermined wear threshold, the controller adjusts the operating parameters of the grinding disc.

[0068] It should be noted that the predetermined pressure threshold and the predetermined wear threshold are used to enter a more conservative working state, so that after the controller adjusts the operating parameters of the grinding disc, all components can still be used, especially the elastic grinding block can still be used.

[0069] In the above embodiment, the operating parameters of the grinding wheel are, for example, the grinding wheel speed. In addition to the grinding wheel speed, the operating parameters of the movable grinding wheel also include, for example, the contact area during grinding and polishing, the radial propulsion speed, the working height, the contact pressure, etc., as detailed below.

[0070] In a preferred embodiment,

[0071] In step S200,

[0072] When the degree of wear exceeds the predetermined wear threshold to a preset specified state, the controller is further used to send a stop signal to stop the grinding disc and send a warning signal.

[0073] In a preferred embodiment,

[0074] In step S200,

[0075] When the wear exceeds the predetermined wear threshold to a preset specified state, the controller automatically rises and stops rotating and working, notifying the operator to replace the new elastic grinding block to the grinding foot of the grinding disc, and restarts the controller after replacement.

[0076] For better understanding, Figure 2 、 Figure 3 As shown,

[0077] at least one elastic grinding block comprising,

[0078] Elastic buffer layer 1;

[0079] A clamping plate 2, which is laminated on the lower surface of the elastic buffer layer 1. The clamping plate 2 includes a first end located inside the grinding area and a second end located outside the grinding area. The extending direction from the first end to the second end is the length direction of the clamping plate 2;

[0080] Multiple first grinding heads 3, which are fixedly arranged on the lower surface of the first end of the clamping plate 2 in an array along the length direction of the clamping plate 2. The width of the first grinding head 3 gradually becomes thicker and then gradually becomes thinner along the length direction of the first grinding head 3. The projected length of the first grinding head 3 in the length direction of the clamping plate 2 is the first longitudinal projected length. The projected length of the first grinding head 3 in the direction perpendicular to the length direction of the clamping plate 2 is the first transverse projected length. The first grinding head 3 has a first cross-sectional area in the direction parallel to the lower surface of the clamping plate 2;

[0081] Multiple second grinding heads 4, which are fixed on the lower surface of the clamping plate 2. The second grinding heads 4 extend towards the second end along the arrangement direction of the first grinding heads 3. The included angle between the length direction of the second grinding heads 4 and the length direction of the clamping plate 2 is greater than the included angle between the length direction of the first grinding heads 3 and the length direction of the clamping plate 2. The width of the second grinding heads 4 gradually becomes thinner along the length direction of the second grinding heads 4. The projected length of the second grinding heads 4 in the length direction of the clamping plate 2 is the second longitudinal projected length. The projected length of the second grinding heads 4 in the direction perpendicular to the length direction of the clamping plate 2 is the second transverse projected length. The second grinding heads 4 have a second cross-sectional area in the direction parallel to the lower surface of the clamping plate 2. The length of the first grinding heads 3 is greater than the length of the second grinding heads 4. The first longitudinal projected length is less than the second longitudinal projected length. The first transverse projected length is greater than the second transverse projected length;

[0082] Multiple third grinding heads 5, which are fixedly arranged on the lower surface of the clamping plate 2 and located between the second grinding heads 4. The arrangement direction of the third grinding heads 5 is parallel to the arrangement direction of the first grinding heads 3 and parallel to the arrangement direction of the second grinding heads 4. The third grinding heads 5 have a third cross-sectional area in the direction parallel to the lower surface of the clamping plate 2; In the cross-section parallel to the lower surface of the clamping plate 2, the first cross-sectional area is less than the sum of the second cross-sectional area and the third cross-sectional area.

[0083] For this embodiment, it means that the present invention further proposes to optimize the shape of the grinding cutter head on the inner side of the grinding disc, which not only facilitates the better control of grinding and polishing by the control method, but also incidentally increases the included angle when the grinding cutter head contacts the tile surface, reduces the generation of grinding resistance and torque, and well protects the cutter head from being dragged and worn out, and synchronizes the wear degree of the inner and outer grinding cutter heads. This is also conducive to achieving better grinding and polishing effects and quality. This new design is conducive to reducing the working volume of the grinding cutter head on the inner side of the grinding disc, improving the situation of asynchronous grinding between the inner side and the outer side of the grinding disc, and reducing the risk of unevenness and scratching on the tile surface caused by asynchronous grinding, thereby also being conducive to achieving better grinding and polishing effects and quality.

[0084] Exemplarily, the elastic buffer layer is a rubber buffer layer.

[0085] In a preferred embodiment, the included angle between the length direction of the first grinding cutter head 3 and the length direction of the clamping plate 2 is 45° to 90°, and the included angle between the length direction of the second grinding cutter head 4 and the length direction of the clamping plate 2 is 85° to 90°.

[0086] In a preferred embodiment, the first cross-sectional area, the second cross-sectional area, and the third cross-sectional area all gradually become smaller in the direction away from the lower surface of the clamping plate 2.

[0087] In a preferred embodiment, the first grinding cutter head 3, the third grinding cutter head 5, and the connection between the third grinding cutter head 5 and the clamping plate 2 are respectively provided with a reinforcement layer 6.

[0088] For this embodiment, in order to promote better holding force and firmness between the grinding cutter head and the elastic buffer layer, a reinforcement layer is further added to the bottom of the grinding cutter head, so that the grinding cutter head will be more stable during operation.

[0089] In a preferred embodiment, the first grinding cutter head 3, the third grinding cutter head 5, and the third grinding cutter head 5 are made of an elastic wear-resistant material.

[0090] In a preferred embodiment, four first grinding cutter heads 3 are fixed to the lower surface of the clamping plate 2 at the first end in two columns along the length direction of the clamping plate 2, 10 second grinding cutter heads 4 are fixed to the lower surface of the clamping plate 2, the second grinding cutter heads 4 extend towards the second end in two columns along the arrangement direction of the first grinding cutter heads 3, and four third grinding cutter heads 5 are arranged and fixed to the lower surface of the clamping plate 2 and are located between the two columns of the second grinding cutter heads 4.

[0091] Compared with the prior art, the number of grinding tips of the existing elastic precision grinding block is 24; while the number of grinding tips in the present invention is 18. After reducing the number of tips, the distance between the tips is enlarged. In this way, each tip can contact the brick surface well, greatly improving the situation of missed polishing at the low points on the tile surface due to large height differences.

[0092] In a preferred embodiment, the length of the clamping plate 2 is at least 120.3 mm, the first longitudinal projection length is 14.4 mm, and the second longitudinal projection length is 17.2 mm.

[0093] In a preferred embodiment, the width of the clamping plate 2 is at least 60 mm, the first transverse projection length is 25.2 mm, and the second transverse projection length is 19.2 mm.

[0094] In a preferred embodiment, the third grinding tip 5 is a regular quadrangular prism that gradually becomes smaller in the direction away from the lower surface of the clamping plate 2, and the side length of the square structure at its top is 15.4 mm.

[0095] Combined Figure 2 、 Figure 3 It can be understood that the design of the specific parameters in the present invention is only a specific example to illustrate that the elastic grinding block disclosed in the present invention changes the shape of the grinding tips on the inner side of the grinding disc, increases the angle when the grinding tips contact the tile surface, reduces the generation of grinding resistance and torque, well protects the tips from being dragged and damaged, and is also conducive to achieving better grinding and polishing effects and quality.

[0096] In one embodiment, a plurality of first grinding tips are fixedly arranged on the lower surface of the clamping plate elastic buffer layer at the first end in an array along the length direction of the clamping plate, and a plurality of third grinding tips are fixedly arranged on the lower surface of the clamping plate elastic buffer layer and are located between the second grinding tips. The arrangement direction of the third grinding tips is parallel to the arrangement direction of the first grinding tips and parallel to the arrangement direction of the second grinding tips, in a cross-section parallel to the lower surface of the clamping plate elastic buffer layer.

[0097] In one embodiment, the grinding disc for optimizing the grinding and polishing of the ceramic surface is an axisymmetric structure. Further, the third grinding tip 5 is arranged on the axis of symmetry.

[0098] In one embodiment, the first cross-sectional area is the area of a rhombus.

[0099] In one embodiment, the second cross-sectional area is the area of a trapezoid.

[0100] In one embodiment, the third cross-sectional area is the area of a square.

[0101] In one embodiment, the side of the second grinding cutter head 4 away from the third grinding cutter head 5 has an arc surface.

[0102] In one embodiment, the first grinding cutter head 3 and the second grinding cutter head 4 are 1 mm apart in the length direction of the clamping plate 2.

[0103] As Figure 4 shown, a plurality of the grinding feet 7 are connected to the grinding disc in a detachable connection manner. As described above, when the wear degree exceeds the predetermined wear threshold to a preset specified state, the controller issues a stop signal to stop the operation of the grinding disc and issues a warning signal.

[0104] In one embodiment, the elastic abrasive blocks are installed in the six grinding foot parts of the working grinding disc in the direction of the large and small ends of the installation clamping plate in a forward direction. After installation, check whether the installation is in place and whether the contact position is adhered. Operate the controller to start the grinding disc. The grinding disc starts to rotate at a high speed. Continue to operate the controller of the grinding disc to lower the grinding disc to the working height, so that the six grinding feet of the grinding disc contact the tile surface and start working. According to the depth requirement of grinding needed, operate on the grinding disc controller to increase or decrease the contact pressure between the elastic abrasive blocks on the grinding feet and the tile surface, so as to evenly grind the tile surface. Exemplarily, when the elastic abrasive blocks (such as 18-tooth elastic abrasive blocks) on the grinding feet are working, when the wear degree exceeds the predetermined wear threshold to a preset specified state, the controller automatically raises and stops rotating and working, and notifies the operator to replace the new elastic abrasive blocks to the positions where the grinding feet of the grinding disc are located. After replacement, restart the controller. In this way, the present invention starts a new round of normal working state, and so on, to complete the grinding and polishing work of the entire tile surface. It can be understood that the predetermined wear threshold is used to enter a more conservative working state, so that after the controller adjusts the operating parameters of the grinding disc, each component can still be used, especially the elastic abrasive blocks can still be used. However, when the wear exceeds the predetermined wear threshold to a preset specified state, the controller automatically raises and stops rotating and working, and notifies the operator to replace the new elastic abrasive blocks to the positions where the grinding feet of the grinding disc are located. After replacement, restart the controller. That is to say, exceeding the predetermined wear threshold to a preset specified state means that the elastic abrasive blocks must be replaced and their service life has reached the limit.

[0105] In a preferred embodiment of the grinding disc, the elastic buffer layer 1 is provided with a concavo-convex structure for detachably connecting the grinding feet on the side opposite to the clamping plate 2.

[0106] In one embodiment, six elastic abrasive blocks are in a group and are simultaneously installed on the six independent grinding feet 7 of the same grinding disc, and the grinding feet correspond to the elastic abrasive blocks one by one.

[0107] In one embodiment, the grinding disc is a centrally symmetric structure.

[0108] Although the embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments and application fields. The above specific embodiments are merely illustrative and guiding, rather than restrictive. Those of ordinary skill in the art can also make many forms under the inspiration of this specification and without departing from the scope protected by the claims of the present invention, and all of these fall within the scope of protection of the present invention.

Claims

1. An elastic abrasive block for an abrasive disc used to optimize the ground and polished ceramic surface, characterized in that the elastic abrasive block includes an elastic buffer layer; a clamping plate stacked on the lower surface of the elastic buffer layer. The clamping plate includes a first end on the inner side of grinding and polishing and a second end on the outer side of grinding and polishing. The extending direction from the first end to the second end is the length direction of the clamping plate; a plurality of first grinding cutter heads fixedly arranged along the length direction of the clamping plate on the lower surface of the first end. The width of the first grinding cutter head gradually becomes thicker and then gradually becomes thinner along the length direction of the first grinding cutter head; a plurality of second grinding cutter heads fixedly arranged on the lower surface of the clamping plate. The second grinding cutter heads extend towards the second end along the arrangement direction of the first grinding cutter heads. The included angle between the length direction of the second grinding cutter heads and the length direction of the clamping plate is greater than the included angle between the length direction of the first grinding cutter heads and the length direction of the clamping plate. The width of the second grinding cutter heads gradually becomes thinner along the length direction of the second grinding cutter heads; a plurality of third grinding cutter heads fixedly arranged on the lower surface of the clamping plate and located between the second grinding cutter heads. The arrangement direction of the third grinding cutter heads is parallel to the arrangement direction of the first grinding cutter heads and parallel to the arrangement direction of the second grinding cutter heads.

2. The elastic abrasive block according to claim 1, characterized in that the projection length of the first grinding cutter head in the length direction of the clamping plate is the first longitudinal projection length, and the projection length of the first grinding cutter head in the direction perpendicular to the length direction of the clamping plate is the first transverse projection length; the projection length of the second grinding cutter head in the length direction of the clamping plate is the second longitudinal projection length, and the projection length of the second grinding cutter head in the direction perpendicular to the length direction of the clamping plate is the second transverse projection length; wherein the length of the first grinding cutter head is greater than the length of the second grinding cutter head, the first longitudinal projection length is less than the second longitudinal projection length, and the first transverse projection length is greater than the second transverse projection length.

3. The elastic abrasive block according to claim 1, characterized in that the first grinding cutter head has a first cross-sectional area in the direction parallel to the lower surface of the clamping plate; the second grinding cutter head has a second cross-sectional area in the direction parallel to the lower surface of the clamping plate; the third grinding cutter head has a third cross-sectional area in the direction parallel to the lower surface of the clamping plate; wherein in the cross-section parallel to the lower surface of the clamping plate, the first cross-sectional area is less than the sum of the second cross-sectional area and the third cross-sectional area.

4. The elastic abrasive block according to claim 1, characterized in that the included angle between the length direction of the first grinding cutter head and the length direction of the clamping plate is 45° to 90°.

5. The elastic abrasive block according to claim 1, characterized in that the included angle between the length direction of the second grinding cutter head and the length direction of the clamping plate is 85° to 90°.

6. The elastic abrasive block according to claim 3, characterized in that the first cross-sectional area, the second cross-sectional area and the third cross-sectional area all gradually become smaller in the direction away from the lower surface of the clamping plate.

7. The elastic abrasive block according to claim 1, characterized in that Reinforcement layers are respectively provided at the joints of the first grinding cutter head, the third grinding cutter head, and the third grinding cutter head with the clamping plate.

Images