Cutting base plate

Abstract

The utility model provides a cutting base plate. The cutting base plate comprises a main body part which extends in the preset direction and is used for bearing a to-be-cut workpiece, a lightening hole set is formed in the main body part and comprises a first lightening hole and at least two second lightening holes, the first lightening hole and the second lightening holes are distributed in the preset direction at intervals, and the second lightening holes are formed in the two sides of the first lightening hole correspondingly; a first supporting part and a second supporting part are formed at the interval between the second lightening holes and the first lightening holes, the length of the side, close to the first side edge, of the first supporting part is larger than that of the side, close to the second side edge, of the first supporting part, and the second supporting part is opposite. According to the technical scheme, the technical problem that in the prior art, the stability of a hollow base plate is poor in the cutting process can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of backing plate, specifically, relates to a cutting backing plate. BACKGROUND

[0002] At present, in the cutting process of solar silicon wafer, the backing plate is an important cutting auxiliary material, the backing plate used in traditional diamond wire silicon wafer cutting is divided into two kinds of solid plate and hollow plate, and the hollow plate has the advantage of reducing cost compared with the solid plate.

[0003] However, with the popularization of thin wire (tungsten wire with a diameter of 28 microns and below) and thin slice (silicon wafer with a thickness of 130 microns and below) cutting technology, although the traditional hollow plate is low in cost, it often causes unstable cutting state due to the structural problem of the hollow plate itself during thin wire and thin slice cutting, which is prone to cause abnormal phenomena such as wire jamming, slice falling and edge collapse, thereby affecting production efficiency. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the utility model is to provide a cutting backing plate to solve the technical problem of poor stability of the hollow backing plate in the prior art during cutting.

[0005] In order to achieve the above purpose, the utility model provides a cutting backing plate, which comprises:

[0006] The main body part is arranged along a preset direction; the main body part is used for bearing a workpiece to be cut; the main body part is provided with a weight-reducing hole group, the weight-reducing hole group comprises a first weight-reducing hole and at least two second weight-reducing holes arranged at intervals along the preset direction, one of the at least two second weight-reducing holes is located on one side of the first weight-reducing hole, and the other is located on the other side of the first weight-reducing hole, the interval between one of the at least two second weight-reducing holes and the first weight-reducing hole forms a first supporting part, and the interval between the other and the first weight-reducing hole forms a second supporting part;

[0007] The main body part has a first side edge and a second side edge arranged oppositely, the first side edge and the second side edge both extend along the preset direction, the length of the first supporting part near one side of the first side edge is greater than the length of the first supporting part near one side of the second side edge, and the length of the second supporting part near one side of the first side edge is less than the length of the second supporting part near one side of the second side edge.

[0008] Further, the cutting backing plate further comprises:

[0009] The side weight-reducing hole is arranged at the end of the main body part and located at the side of the weight-reducing hole group; the side weight-reducing hole has a central symmetry structure.

[0010] Further, the distance between the side lightening hole far from one side of the lightening hole group and the end of the main body piece is L1, the length of the main body piece in the preset direction is L2, and 0.05≤L1 / L2≤0.1.

[0011] Further, the side lightening hole is a circular hole; and / or,

[0012] The side lightening hole is at least two, one of the at least two side lightening holes is located on one side of the lightening hole group, and the other is located on the other side of the lightening hole group.

[0013] Further, the first lightening hole and the second lightening hole are both parallelogram structures.

[0014] Further, the first support part and the second support part are both isosceles trapezoidal structures.

[0015] Further, in the direction from the first side edge to the second side edge, the lightening hole group is arranged in the middle of the main body piece; the distance between the lightening hole group and the first side edge is d, and 1mm≤d≤2.5mm.

[0016] Further, the first lightening hole has a first hole edge, a second hole edge, a third hole edge and a fourth hole edge connected in sequence, the first hole edge and the third hole edge are oppositely arranged, the second hole edge is oppositely arranged with the first side edge, and the fourth hole edge is oppositely arranged with the second side edge; wherein the first hole edge and / or the third hole edge is arc-shaped;

[0017] The second lightening hole has a fifth hole edge, a sixth hole edge, a seventh hole edge and an eighth hole edge connected in sequence, the fifth hole edge and the seventh hole edge are oppositely arranged, the sixth hole edge is oppositely arranged with the first side edge, and the eighth hole edge is oppositely arranged with the second side edge; wherein the fifth hole edge and / or the seventh hole edge is arc-shaped.

[0018] Further, the main body piece is made of a plastic material; and / or,

[0019] The specific gravity of the main body piece is greater than or equal to 0.9g / cm 3 and less than or equal to 1.1g / cm 3 ; and / or,

[0020] The tensile strength of the plate material of the main body piece is greater than or equal to 15Mpa and less than or equal to 20Mpa.

[0021] Further, the Shore hardness of the main body piece is greater than or equal to 80HD and less than or equal to 85HD; and / or,

[0022] The electrical conductivity of the main body piece is less than 15μs / cm; and / or,

[0023] The main body piece is made of at least one of the following materials: acrylonitrile-butadiene-styrene plastic, acrylonitrile-styrene plastic, polycarbonate plastic, organic glass.

[0024] The technical scheme of the utility model, through the length difference design of the first support part and the second support part, makes the overall structure of the backing plate more stable. This design ensures that the backing plate can provide sufficient support and stability when carrying the workpiece to be cut, especially when using thin wires for sheet cutting, effectively avoiding abnormal conditions such as wire jamming, piece dropping and edge collapse, thereby improving the yield of cutting. In addition, the weight reduction hole group not only reduces the amount of material used, but also reduces the overall weight of the backing plate. Compared with the traditional solid backing plate, the scheme saves 15% to 25% in material cost, and at the same time, due to the structural arrangement of the first support part and the second support part, the cutting process is more efficient, indirectly reducing the production cost. Therefore, through the technical scheme of the utility model, the technical problem of poor stability of the hollow backing plate in the cutting process in the prior art can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings accompanying the specification of this application form a part of the disclosure, serve to further provide a further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof serve to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:

[0026] Figure 1 A structure schematic view of a cutting backing plate according to an embodiment of the utility model is shown.

[0027] Among them, the above-mentioned drawings include the following signs:

[0028] 10, main body piece;

[0029] 11, first side edge;

[0030] 12, second side edge;

[0031] 20, first weight reduction hole;

[0032] 21, first hole edge;

[0033] 22, second hole edge;

[0034] 23, third hole edge;

[0035] 24, fourth hole edge;

[0036] 30, second weight reduction hole;

[0037] 31, fifth hole edge;

[0038] 32, sixth hole edge;

[0039] 33, seventh hole edge;

[0040] 34, eighth hole edge;

[0041] 40. First support section;

[0042] 50. Second support section;

[0043] 60. Side weight reduction hole. Detailed Implementation

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] like Figure 1 As shown, an embodiment of the present invention provides a cutting pad, which includes a main body 10 extending along a preset direction; the main body 10 is used to support the workpiece to be cut; the main body 10 is provided with a weight-reducing hole group, which includes a first weight-reducing hole 20 and at least two second weight-reducing holes 30 arranged at intervals along a preset direction, one of the at least two second weight-reducing holes 30 being located on one side of the first weight-reducing hole 20 and the other being located on the other side of the first weight-reducing hole 20, the interval between one of the at least two second weight-reducing holes 30 and the first weight-reducing hole 20 forming a first support portion 40, and the interval between the other at least two second weight-reducing holes 30 and the first weight-reducing hole 20 forming a second support portion 50. The main body 10 has a first side 11 and a second side 12 that are arranged opposite to each other. Both the first side 11 and the second side 12 extend along a preset direction. The length of the first support part 40 on the side closer to the first side 11 is greater than the length of the first support part 40 on the side closer to the second side 12. The length of the second support part 50 on the side closer to the first side 11 is less than the length of the second support part 50 on the side closer to the second side 12.

[0046] The cutting pad provided in this embodiment of the invention, through the length difference design of the first support part 40 and the second support part 50, makes the overall structure of the pad more stable. This design ensures that the pad provides sufficient support and stability when supporting the workpiece to be cut, especially when cutting thin sheets with fine wire, effectively avoiding abnormalities such as wire jamming, sheet falling off, and edge chipping, thereby improving the yield of the cut product. In addition, the set of weight-reducing holes not only reduces the amount of material used, but also reduces the overall weight of the pad. Compared with traditional solid pads, this solution saves 15% to 25% in material costs. At the same time, due to the structural arrangement of the first support part 40 and the second support part 50, the cutting process is more efficient, indirectly reducing production costs. Therefore, the cutting pad provided in this embodiment can solve the technical problem of poor stability of hollow pads in the prior art during the cutting process.

[0047] It should be noted that by applying the cutting backing pad provided in the present embodiment, the wire sticking rate, the piece dropping rate, the adding and removing rate, the adding and cutting rate, and the edge collapse rate are all effectively reduced. The wire sticking rate is 3% (the wire sticking rate in the conventional technical solution is 7%), and the piece dropping rate is 0% (the piece dropping rate in mass production is 0.63%).

[0048] Specifically, the workpiece to be cut is a silicon rod. The cutting backing pad of the present solution is suitable for tungsten wire cutting process. The structure design and material selection of the backing pad are optimized to adapt to the special needs of the tungsten wire cutting process according to the cutting characteristics of the silicon rod. This design ensures that the backing pad can withstand the weight of the silicon rod and the stress in the wire cutting process. At the same time, by reasonably arranging the weight reduction holes, the weight and rigidity of the backing pad are effectively controlled, avoiding problems such as wire sticking and workpiece cracking caused by the stability of the backing pad structure, thereby improving the cutting quality and yield.

[0049] Specifically, the cutting backing pad is a strip-shaped structure extending in a predetermined direction. In this way, the design of the strip-shaped structure enables the backing pad to closely fit the shape of the workpiece to be cut, especially in the wire cutting process. This structure can provide uniform and stable support, reducing the vibration and displacement of the workpiece during processing, thereby improving the cutting precision and processing efficiency. At the same time, the strip-shaped structure is more conducive to uniform distribution of materials and weight control, enabling the backing pad to meet the mechanical strength requirements while achieving lightweight design and reducing energy consumption.

[0050] In the present embodiment, the cutting backing pad further comprises side weight reduction holes 60, which are arranged at the ends of the main body 10 and located at the sides of the weight reduction hole group. The side weight reduction holes 60 are center-symmetric structures. By adopting such a structure, the manufacturing qualification rate of the cutting backing pad can be significantly increased. The center-symmetric design of the side weight reduction holes 60 ensures uniform distribution of thermal stress during hot processing and cooling, effectively controls the warping and deformation of the backing pad, and guarantees the flatness of the backing pad, which is particularly important for wire cutting processes that require high stability and high precision. In addition, the center-symmetric side weight reduction holes 60 can also optimize the structural layout of the backing pad, balance the weight distribution, and further improve the mechanical properties and service life of the backing pad.

[0051] Specifically, the distance between the side of the side weight reduction hole 60 farthest from the weight reduction hole group and the end of the main body 10 is L1, and the length of the main body 10 in the predetermined direction is L2, 0.05≤L1 / L2≤0.1. By adopting such a structure, the position of the side weight reduction hole 60 can be ensured to be far enough from the end of the main body 10 to avoid the problem of insufficient width and instability of the structure at both ends of the main body 10 during cutting, while not being too far away to maintain the stability and symmetry of the overall structure of the backing pad, reducing problems such as wire sticking and edge collapse during cutting.

[0052] Specifically, the distance between the side lightening hole 60 far away from one side of the lightening hole group and the end of the main body piece 10 is greater than 10 mm. With such a structural arrangement, compared with the distance of 3-5 mm in the conventional technical solution, the structural stability of the backing plate is further optimized, avoiding the problem of structural instability due to the too small width of the two ends of the main body piece 10 at the beginning and end of cutting, reducing the risk of wire jamming and backing plate damage.

[0053] Specifically, the side lightening hole 60 is a circular hole. With such a structural arrangement, the design of the circular hole makes the stress distribution of the backing plate more uniform during the cooling process after hot working, effectively controls the degree of warping, and improves the flatness and stability of the backing plate. In addition, the circular hole is easier to process during manufacturing, reducing production difficulty and cost, while reducing stress concentration at the hole edge, enhancing the strength of the hole edge, and avoiding cracks at the hole edge during use.

[0054] Specifically, the side lightening hole 60 is at least two, one of which is located on one side of the lightening hole group and the other is located on the other side of the lightening hole group. Specifically, the side lightening hole 60, the first lightening hole 20 and the second lightening hole 30 are arranged along a predetermined direction. With such a structural arrangement, the arrangement of at least two side lightening holes 60 can form a symmetrical structure in the predetermined direction, further enhancing the thermal stability and mechanical strength of the backing plate as a whole. The design of the side lightening hole 60 on both sides of the lightening hole group not only helps to control the weight of the backing plate, but also improves the heat dissipation performance of the backing plate through the hole structure on both sides, reduces thermal stress, and prolongs the service life of the backing plate. At the same time, this symmetrical layout conforms to the principle of mechanical design, which helps to improve the machining precision and stability of the backing plate. The arrangement of the holes along the predetermined direction also facilitates automatic processing and assembly on the production line, improving production efficiency.

[0055] In this embodiment, the first lightening hole 20 and the second lightening hole 30 are both parallelogram structures. With such a structural arrangement, the arrangement of the parallelogram hole can significantly improve the structural stability of the backing plate. When carrying the workpiece to be cut, this hole shape can form multiple staggered rigid support points through the parts between the holes (first support part 40 and second support part 50). Due to the characteristics of the parallelogram hole, it forms support areas in opposite directions at the interval positions between the holes, enhancing the resistance of the backing plate to wire vibration and workpiece weight, reducing the wire jamming rate, piece dropping rate and edge collapse rate, and improving product quality and yield.

[0056] Specifically, the first lightening hole 20 has first, second, third and fourth hole edges 21, 22, 23 and 24 connected in sequence, the first and third hole edges 21 and 23 are oppositely arranged, the second hole edge 22 is oppositely arranged with the first side edge 11, and the fourth hole edge 24 is oppositely arranged with the second side edge 12; wherein the first and / or third hole edges 21 and 23 are straight lines. With such a structural arrangement, it is convenient for processing, and the structural stability of the backing plate and the strength of the hole edges can be improved, the deformation of the backing plate and the damage of the hole edges during wire cutting can be reduced, and the cutting accuracy and reliability are further ensured.

[0057] Specifically, the second lightening hole 30 has fifth, sixth, seventh and eighth hole edges 31, 32, 33 and 34 connected in sequence, the fifth and seventh hole edges 31 and 33 are oppositely arranged, the sixth hole edge 32 is oppositely arranged with the first side edge 11, and the eighth hole edge 34 is oppositely arranged with the second side edge 12; wherein the fifth and / or seventh hole edges 31 and 33 are straight lines. With such a structural arrangement, it is convenient for processing, and the structural stability of the backing plate and the strength of the hole edges can be improved, the deformation of the backing plate and the damage of the hole edges during wire cutting can be reduced, and the cutting accuracy and reliability are further ensured.

[0058] Specifically, the first and second support portions 40 and 50 are isosceles trapezoidal structures. With such a structural arrangement, the first and second support portions 40 and 50 of the isosceles trapezoidal structure can provide more uniform support force distribution, and at the same time, due to its special geometric shape, a more stable support point can be formed when carrying the workpiece.

[0059] In another embodiment, the first lightening hole 20 has first, second, third and fourth hole edges 21, 22, 23 and 24 connected in sequence, the first and third hole edges 21 and 23 are oppositely arranged, the second hole edge 22 is oppositely arranged with the first side edge 11, and the fourth hole edge 24 is oppositely arranged with the second side edge 12; wherein the first and / or third hole edges 21 and 23 are arc-shaped. With such a structural arrangement, the structural stability of the backing plate and the strength of the hole edges can be improved, the deformation of the backing plate and the damage of the hole edges during wire cutting can be reduced, and the cutting accuracy and reliability are further ensured. Compared with straight hole edges, arc-shaped hole edges can significantly reduce stress concentration at the hole edges, more uniformly distribute the stress of the material around the hole, reduce the risk of cracks at the hole edges, thereby improving the overall strength and durability of the backing plate.

[0060] In another embodiment, the second weight-reducing hole 30 has a fifth hole edge 31, a sixth hole edge 32, a seventh hole edge 33 and an eighth hole edge 34 connected in sequence, the fifth hole edge 31 and the seventh hole edge 33 are oppositely arranged, the sixth hole edge 32 is oppositely arranged with the first side edge 11, and the eighth hole edge 34 is oppositely arranged with the second side edge 12; wherein the fifth hole edge 31 and / or the seventh hole edge 33 is arc-shaped. With such a structural arrangement, the structural stability of the backing plate and the strength of the hole edge can be improved, the deformation of the backing plate and the damage of the hole edge during wire cutting can be reduced, and the cutting accuracy and reliability can be further ensured. Compared with a straight hole edge, an arc-shaped hole edge can significantly reduce the stress concentration phenomenon of the hole edge, more evenly distribute the stress of the material around the hole, reduce the risk of cracks on the hole edge, and thus improve the overall strength and durability of the backing plate.

[0061] Specifically, in the direction from the first side edge 11 to the second side edge 12, the weight-reducing hole group is arranged at the middle part of the main body 10. The distance between the weight-reducing hole group and the first side edge 11 is d, and 1mm≤d≤2.5mm. With such a structural arrangement, this design ensures that the weight-reducing hole group is not too close to the edge when the backing plate is carrying the workpiece, thereby avoiding edge stress concentration and possible strength reduction. At the same time, the weight-reducing hole group is located in the middle part and maintains a distance of 1mm to 2.5mm from the side edge, which helps to minimize the use of materials for the backing plate while ensuring structural stability, effectively controlling the cost on the basis of maintaining the overall mechanical strength and stability of the backing plate.

[0062] Specifically, the main body 10 is made of plastic material. The use of plastic material makes the backing plate have the characteristics of light weight, durability and cost-effectiveness. Plastic materials generally have a lower density, which can reduce the weight of the backing plate. At the same time, the processability and recyclability of plastic materials are good, which helps to reduce production costs and improve environmental friendliness.

[0063] Specifically, the main body 10 is made of at least one of the following materials: acrylonitrile-butadiene-styrene plastic (ABS), acrylonitrile-styrene plastic (AS), polycarbonate plastic (PC), organic glass (PMMA). These materials not only have high strength and hardness, but also have good electrical insulation and low electrical conductivity, which are suitable for precise wire cutting processes. At the same time, their good toughness can reduce cracks and fractures during use, prolonging the service life of the backing plate.

[0064] Specifically, the main body 10 is made of ABS; or made of a mixture of ABS and AS; or made of a mixture of ABS and PC; or made of a mixture of ABS and PMMA; or made of a mixture of ABS, AS and PC; or made of a mixture of ABS, AS and PMMA; or made of a mixture of ABS, PC and PMMA.

[0065] Specifically, the specific gravity of the main body piece 10 is greater than or equal to 0.9 g / cm 3 and less than or equal to 1.1 g / cm 3 With such a structural arrangement, it is ensured that the backing plate is lightweight while maintaining sufficient structural strength and stability, avoiding insufficient mechanical strength due to excessively low specific gravity, and material waste and increased manufacturing costs due to excessively high specific gravity. The backing plate within this specific gravity range is suitable for high-speed wire cutting processes, capable of reducing energy consumption and costs while ensuring cutting accuracy.

[0066] Specifically, the tensile strength of the main body piece 10 is greater than or equal to 15 MPa and less than or equal to 20 MPa. With such a structural arrangement, the backing plate has good tensile performance, capable of withstanding tensile stress during wire cutting, avoiding deformation and damage of the backing plate in use, improving the reliability and durability of the backing plate, thereby reducing maintenance and replacement costs in production.

[0067] Specifically, the Shore hardness of the main body piece 10 is greater than or equal to 80 HD and less than or equal to 85 HD. With such a structural arrangement, it is ensured that the backing plate has appropriate hardness, capable of effectively supporting the workpiece, while avoiding excessive wire wear due to excessive hardness. The backing plate within this hardness range can reduce wire consumption while ensuring cutting quality, improving economic efficiency.

[0068] Specifically, the electrical conductivity of the main body piece 10 is less than 15 μs / cm. With such a structural arrangement, the backing plate can have good electrical insulation performance, capable of avoiding short circuit and electrical erosion phenomena during cutting, protecting the wire and workpiece from damage, while also reducing the impact of excessive residual current, improving the precision and safety of wire cutting.

[0069] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: 1. Increase the cutting backing plate structural stability, the backing plate is not easy to break after cutting, reduce the carding rate;2. The setting of the two side circular holes can obviously increase the cutting backing plate manufacturing qualified rate;3. Effectively reduce the carding rate, drop rate, add off rate, add cutting rate and edge collapse rate in the cutting process.

[0070] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0071] The foregoing is considered as illustrative only of the principles of the application. Other variations and modifications are possible in light of the above teachings. Therefore, the scope of the application is not intended to be limited to the particular embodiments described, but is to be accorded the broadest scope consistent with the scope of the claims. Without intent to limit the scope of the application, exemplary embodiments of the application are set forth below. It is, however, contemplated that other embodiments might fall within the scope of the application. To the extent that they are inconsistent, the reference in this specification to singular comprise a reference to the plural or vice versa and male and female referents include both male and female unless explicitly stated otherwise. Furthermore, to the extent that "comprising", "including", containing", listed

[0072] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by terms such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "horizontal", "top", "bottom", and the like are generally based on the orientation or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0073] For the convenience of description, spatial relative terms such as "above", "upper", "top", "up", "lower", "bottom", and the like can be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations of the devices in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are turned over, the device described as "above" or "above" the other device or structure will be positioned "below" or "below" the other device or structure. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0074] In addition, it should be noted that the use of the terms "first", "second", and the like do not have a special meaning, and are merely used to distinguish the corresponding components, and therefore cannot be construed as limiting the scope of protection of the present application.

[0075] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cutting pad characterized by, The cutting pad plate comprises: a main body (10) arranged along a preset direction; the main body (10) is used for carrying a workpiece to be cut; a weight-reducing hole group is arranged on the main body (10), the weight-reducing hole group comprises a first weight-reducing hole (20) and at least two second weight-reducing holes (30) arranged at intervals along the preset direction, one of the at least two second weight-reducing holes (30) is located on one side of the first weight-reducing hole (20), and the other is located on the other side of the first weight-reducing hole (20), the interval between one of the at least two second weight-reducing holes (30) and the first weight-reducing hole (20) forms a first supporting part (40), and the interval between the other and the first weight-reducing hole (20) forms a second supporting part (50); wherein the main body (10) has oppositely arranged first and second side edges (11) and (12), the first and second side edges (11) and (12) both extend along the preset direction, the length of the first supporting part (40) near one side of the first side edge (11) is greater than the length of the first supporting part (40) near one side of the second side edge (12), and the length of the second supporting part (50) near one side of the first side edge (11) is less than the length of the second supporting part (50) near one side of the second side edge (12).

2. The cutting pad of claim 1, wherein, The cutting pad plate further comprises: a side weight-reducing hole (60) arranged at an end of the main body (10) and located at a side of the weight-reducing hole group; the side weight-reducing hole (60) has a central symmetric structure.

3. The cutting pad of claim 2, wherein, The interval between the side of the side weight-reducing hole (60) away from the weight-reducing hole group and the end of the main body (10) is L1, the length of the main body (10) in the preset direction is L2, and 0.05≤L1 / L2≤0.

1.

4. The cutting pad of claim 2, wherein, The side weight-reducing hole (60) is a circular hole; and / or, The side weight-reducing hole (60) is at least two, one of the at least two side weight-reducing holes (60) is located on one side of the weight-reducing hole group, and the other is located on the other side of the weight-reducing hole group.

5. The cutting pad of claim 1, wherein, The first weight-reducing hole (20) and the second weight-reducing hole (30) both have a parallelogram structure.

6. The cutting pad of claim 1, wherein, The first supporting part (40) and the second supporting part (50) both have an isosceles trapezoidal structure.

7. The cutting pad of claim 1, wherein In the direction from the first side edge (11) to the second side edge (12), the weight-reducing hole group is arranged in the middle of the main body (10); the interval between the weight-reducing hole group and the first side edge (11) is d, and 1mm≤d≤2.5mm.

8. The cutting pad of claim 1, wherein, The first weight-reducing hole (20) has a first hole edge (21), a second hole edge (22), a third hole edge (23) and a fourth hole edge (24) connected in sequence, the first hole edge (21) and the third hole edge (23) are oppositely arranged, the second hole edge (22) is oppositely arranged with the first side edge (11), and the fourth hole edge (24) is oppositely arranged with the second side edge (12); wherein the first hole edge (21) and / or the third hole edge (23) is arc-shaped; CLAIM PN290723GAOCE The second weight-reducing hole (30) has a fifth hole side (31), a sixth hole side (32), a seventh hole side (33) and an eighth hole side (34) connected in sequence, the fifth hole side (31) and the seventh hole side (33) are oppositely arranged, the sixth hole side (32) is oppositely arranged with the first side (11), and the eighth hole side (34) is oppositely arranged with the second side (12); wherein the fifth hole side (31) and / or the seventh hole side (33) is arc-shaped.

9. The cutting pad of claim 1, wherein, The main body (10) is made of a plastic material; and / or, the specific weight of said body piece (10) is greater than or equal to 0.9 g / cm 3 and less than or equal to 1.1 g / cm 3 ; and / or, The plate tensile strength of the main body piece (10) is greater than or equal to 15 MPa and less than or equal to 20 MPa.

10. The cutting pad of claim 1, wherein, The Shore hardness of the main body piece (10) is greater than or equal to 80 HD and less than or equal to 85 HD; and / or, The conductivity of the main body piece (10) is less than 15 μs / cm; and / or, The main body piece (10) is made of at least one of the following materials: acrylonitrile-butadiene-styrene plastic, acrylonitrile-styrene plastic, polycarbonate plastic, organic glass.

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