Forage grass chopping cutter main cutting edge with bionic micro-nano structure

Abstract

The invention relates to a main cutting edge of a forage grass chopping cutter with a bionic micro-nano structure, and belongs to the technical field of agricultural machinery. A cutting edge of a main body part of the cutting edge and a transverse appearance contour line of an auxiliary halfpace are obtained by bionic optimization of an inferior incisor tooth curve of a civetto in nature; and the cutting edge convex teeth and the cutting edge concave teeth which are built along the tooth direction according to a periodic curve between the auxiliary halfpace plane I and the lower surface of the cutting edge jointly form a functional cutting part. According to the cutting edge, through the synergistic effect of the curve halfpace structure and the periodic cutting part, the cutting resistance can be effectively reduced through the aggregation effect of the curve halfpace during operation, the cutting efficiency is improved, and the cutting stability of materials is guaranteed. Compared with a forage grass chopping cutter without an auxiliary cutting edge, the forage grass chopping cutter has the remarkable advantages of being small in cutting resistance, high in efficiency and more stable.

Description

Technical Field

[0001] This invention relates to a biomimetic micro-nano structure forage chopping tool with a main cutting edge, belonging to the field of agricultural machinery technology. Background Technology

[0002] In the process of large-scale development of animal husbandry, the efficiency and quality of forage processing directly affect the economic benefits of livestock farming. As a core component of forage processing equipment, the performance of shredders plays a decisive role in the processing effect. Traditional shredders struggle to achieve efficient and precise shredding of different forages, often resulting in uneven shredding, over-shredding, or under-shredding, affecting palatability and digestibility. Furthermore, with the diversification of forage varieties, such as alfalfa and silage corn, which have different hardness and fiber characteristics, higher demands are placed on the cutting performance of shredders.

[0003] Currently, most commercially available forage choppers employ a traditional, single-structure design for their main cutting edge. This design suffers from high cutting resistance, high energy consumption, and poor cutting stability during long-term cutting of high-fiber forage, increasing both production costs and quality. Therefore, developing a biomimetic micro / nano-structured forage chopper with low cutting resistance, high efficiency, and high stability is a pressing technical challenge in the agricultural machinery field.

[0004] Based on the above background, this invention proposes a biomimetic micro / nano structure forage chopper with a main cutting edge. This invention simulates and biomimetically optimizes the microstructure of some microstructures found on the incisors of beavers in nature, reducing cutting resistance while improving cutting efficiency and ensuring material cutting stability. Summary of the Invention

[0005] This invention, based on biomimetic principles, develops a biomimetic micro / nano structure forage chopping tool with a unique main cutting edge. Its unique structural design results in high efficiency and good stability, providing a novel tool for forage chopping. In practical applications, this cutting edge exhibits excellent overall performance: its distinctive biomimetic curved cutting edge significantly reduces cutting resistance and increases the contact time between the material and the cutting edge, effectively improving cutting efficiency and stability; the multi-step stepped structure in the rear section effectively reduces the interaction force between the material and the tool, and also reduces the contact time, thus minimizing material adhesion; furthermore, the tool is easy and quick to assemble and disassemble, and convenient to maintain.

[0006] The technical solution of this invention is: a main cutting edge of a biomimetic micro-nano structure forage chopping tool, comprising a main cutting edge and a tool adapted thereto;

[0007] The transverse outline of the main cutting edge and the auxiliary ladder is derived from the biomimetic optimization of the lower incisor curve of a beaver in nature.

[0008] The cutting edge convex tooth 1 and cutting edge concave tooth 3, which are established along the tooth direction according to a periodic curve between the auxiliary ladder plane I4 and the lower surface 21 of the cutting edge, together form the functional cutting part.

[0009] Furthermore, the upper part of the main cutting edge body consists of, from front to back, a cutting edge protrusion 1, a transition plane 2, a cutting edge concave tooth 3, an auxiliary ladder plane I 4, an auxiliary ladder inclined surface I 5, an auxiliary ladder plane II 6, an auxiliary ladder inclined surface II 7, and a cutting edge upper surface 8. Except for the front end of the cutting edge protrusion 1 and the rear end of the cutting edge upper surface 8, the rear end contour lines of each part above the main cutting edge body coincide with the front end contour lines of the rear part, and the tangents at corresponding points on the curve contour lines between each part are parallel. Below the main cutting edge body is a cutting edge lower surface 21 parallel to the cutting edge upper surface 8. The front ends of the upper and lower parts of the main cutting edge body are connected by the front cutting edge line of the cutting edge protrusion 1 coinciding with the front end contour line of the cutting edge lower surface 21, and the rear ends, except for the mounting platform part, are connected by the cutting edge rear surface 9. The cutting edge rear surface 9 is formed by the rear end contour line of the cutting edge upper surface 8 perpendicularly downwards to the upper surface I 10 of the mounting platform and the cutting edge lower surface 21.

[0010] The main cutting edge body and the tool mounting table are connected by the cutting edge rear surface 9. The mounting table consists of two identical rectangular prisms with bolt mounting holes, arranged symmetrically about the central axis of the main cutting edge body. One of the mounting tables consists of, from top to bottom, the upper mounting surface I10, the inner side I11, the upper mounting surface II12, the inner side II13, and the lower mounting surface 19. The side parts are the outer side 18 of the two mounting tables facing each other, the rear mounting surface 15 of the mounting table, and the outer cutting edge side 14 connected to the side of the main cutting edge body. The upper mounting surface I10, the upper mounting surface II12, and the lower mounting surface 19 are parallel to each other, and the outer side 18 of the mounting table is parallel to the outer cutting edge side 14. The lower mounting surface 19 is connected to the lower cutting edge surface 21 of the main cutting edge body through a transition surface 20.

[0011] The compatible tool part includes a tool mounting surface 16, a tool mounting hole 17, and a tool mounting hole 22. The tool mounting hole 17 and the tool mounting hole 22 are symmetrical about the center line of the tool. During installation, the tool mounting surface 16 coincides with the lower surface 19 of the mounting table of the main cutting edge. Then, the mounting bolt 23 is passed through the reserved mounting hole on the mounting table of the main cutting edge and the tool mounting hole 22 on the tool and tightened.

[0012] Furthermore, the longitudinal section of the cutting edge protrusion 1 is composed of multiple protrusions in different directions between point A and point L arranged according to a certain rule. The arrangement rule is that the tooth tips A, C, E, G, I, and K of each protrusion are all on an arc with the line segment connecting point A and point L as the chord and the chord length corresponding to an angle of 45°. AL is divided into 6 segments. The perpendicular lines to the chord length are drawn through points B, D, F, H, and J. The intersection of these perpendicular lines with the arc is the position of each tooth tip.

[0013] On the outer surface 14 of the cutting edge, a plane rectangular coordinate system I is established with point A as the origin, the direction from the front end to the rear end as the positive X-axis, and the direction from the lower surface 21 of the cutting edge to the upper surface 8 of the cutting edge as the positive Y-axis. A~L are all on this coordinate system, and there are straight lines between each pair of adjacent points.

[0014] The mathematical expression for the straight line segment AB is: y = 0.4286x, where x and y are coordinate values ​​in rectangular coordinate system I, and 0 ≤ x ≤ 0.0583, 0 ≤ y ≤ 0.0250;

[0015] The mathematical expression for the straight line segment BC is: y = -2.3329x + 0.1611, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.0489 ≤ x ≤ 0.0583, 0.0250 ≤ y ≤ 0.0471;

[0016] The mathematical expression for the straight line segment CD is: y = 0.0430x + 0.0450, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.0489 ≤ x ≤ 0.1167, 0.0471 ≤ y ≤ 0.0500;

[0017] The mathematical expression for the straight line segment DE is: y = −2.3333x + 0.3222, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.1072 ≤ x ≤ 0.1167, 0.0500 ≤ y ≤ 0.0722;

[0018] The mathematical expression for the straight line segment EF is: y = 0.0413x + 0.0678, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.1072 ≤ x ≤ 0.1750, 0.0722 ≤ y ≤ 0.0750;

[0019] The mathematical expression for the straight line segment FG is: y = -2.3333x + 0.4833, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.1655 ≤ x ≤ 0.1750, 0.0750 ≤ y ≤ 0.0972;

[0020] The mathematical expression for the straight line segment GH is: y = 0.0413x + 0.0904, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.1655 ≤ x ≤ 0.2333, 0.0972 ≤ y ≤ 0.1000;

[0021] The mathematical expression for the straight line segment HI is: y = -2.3333x + 0.6444, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.2238 ≤ x ≤ 0.2333, 0.1000 ≤ y ≤ 0.1222;

[0022] The mathematical expression for the straight line segment IJ is: y = 0.0413x + 0.1130, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.2238 ≤ x ≤ 0.2917, 0.1222 ≤ y ≤ 0.1250;

[0023] The mathematical expression for the straight line segment JK is: y = -2.3333x + 0.8056, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.2822 ≤ x ≤ 0.2917, 0.1250 ≤ y ≤ 0.1471;

[0024] The mathematical expression for the straight line segment KL is: y = 0.0428x + 0.1350, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.2822 ≤ x ≤ 0.3500, 0.1471 ≤ y ≤ 0.1500;

[0025] In this invention, some of the protruding teeth are arranged in a multi-angle manner, which can effectively increase the contact area between the material and the cutting edge, thereby improving the shredding efficiency;

[0026] The cutting edge protruding tooth 1 and the cutting edge concave tooth 3 are connected by a transition plane 2. Its side is the outer side surface 14 of the cutting edge, and the intersection line between it and the lower surface 21 of the cutting edge constitutes the cutting edge represented by point A in the cutting edge protruding tooth 1.

[0027] Furthermore, the longitudinal section of the cutting edge concave tooth 3 is composed of multiple concave teeth in the same direction arranged in a certain pattern between points L and S. The arrangement pattern is that the tooth tips N, P, and R of each concave tooth are all on the straight line connected by points L and S, and the included angle between adjacent line segments at each end is 45°.

[0028] On the outer surface 14 of the cutting edge, a plane rectangular coordinate system I is established with point A as the origin, the direction from the front end to the rear end as the positive X-axis, and the direction from the lower surface 21 of the cutting edge to the upper surface 8 of the cutting edge as the positive Y-axis. L~S are all on this coordinate system, and there are straight lines between each pair of adjacent points.

[0029] The mathematical expression for the straight line segment LM is: y = 0.1500, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.3500 ≤ x ≤ 0.5167;

[0030] The mathematical expression for the MN segment of the straight line is: y = -x + 0.6667, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.4667 ≤ x ≤ 0.5167, 0.1500 ≤ y ≤ 0.2000;

[0031] The mathematical expression for the NO segment of the straight line is: y = 0.2000, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.4667 ≤ x ≤ 0.6333;

[0032] The mathematical expression for the straight line segment OP is: y = -x + 0.8333, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.5833 ≤ x ≤ 0.6333, 0.2000 ≤ y ≤ 0.2500;

[0033] The mathematical expression for the straight line segment PQ is: y = 0.2500, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.5833 ≤ x ≤ 0.7500;

[0034] The mathematical expression for the straight line of segment QR is: y = -x + 1.0000, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.7000 ≤ x ≤ 0.7500, 0.2500 ≤ y ≤ 0.3000;

[0035] The straight line of the RS segment serves as one of the contours for forming the concave tooth 3 of the cutting edge;

[0036] In this invention, some of the concave teeth are arranged at equal intervals with the same angle, providing a certain stable cutting area, and the sharp angle can effectively cut the material, thus effectively improving cutting stability and efficiency.

[0037] The concave cutting edge 3 and the convex cutting edge 1 are connected by a transition plane 2. The side of the convex cutting edge 14 is the outer side of the cutting edge. The intersection line between the convex cutting edge 3 and the auxiliary ladder plane I 4 forms the cutting edge represented by point R in the concave cutting edge 3. The convex cutting edge 3 is connected to the auxiliary ladder section through the transition of the auxiliary ladder plane I.

[0038] Furthermore, the auxiliary ladder section includes auxiliary ladder plane I4, auxiliary ladder inclined plane I5, auxiliary ladder plane II6 and auxiliary ladder inclined plane II7. Its longitudinal section is composed of two pairs of equidistant curves between point R and point V arranged according to a certain rule. The arrangement rule is that auxiliary ladder plane I4 and auxiliary ladder plane II6, and auxiliary ladder inclined plane I5 and auxiliary ladder inclined plane II7 are parallel to each other and of equal length.

[0039] On the outer surface 14 of the cutting edge, a plane rectangular coordinate system I is established with point A as the origin, the direction from the front end to the rear end as the positive X-axis, and the direction from the lower surface 21 of the cutting edge to the upper surface 8 of the cutting edge as the positive Y-axis. R~V are all on this coordinate system, and there are straight lines between each pair of adjacent points.

[0040] The mathematical expression for the straight line segment RS is: y = 0.3000, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.7000 ≤ x ≤ 1.0000;

[0041] The mathematical expression for the straight line in segment ST is: y = 0.4286x - 0.1286, where x and y are coordinate values ​​in rectangular coordinate system I, and 1.0000 ≤ x ≤ 1.7000, 0.3000 ≤ y ≤ 0.6000;

[0042] The mathematical expression for the straight line segment TU is: y = 0.6000, where x and y are coordinate values ​​in rectangular coordinate system I, and 1.7000 ≤ x ≤ 2.0000;

[0043] The mathematical expression for the straight line of segment UV is: y = 0.4286x - 0.2572, where x and y are coordinate values ​​in rectangular coordinate system I, and 2.0000 ≤ x ≤ 2.7000, 0.6000 ≤ y ≤ 0.9000;

[0044] The auxiliary ladder sections are arranged at equal intervals at the same angle. This section forms an effective material throwing structure through the intersecting arrangement of planes and inclined planes. The auxiliary ladder inclined planes I5 and II7 can provide the material with a support force perpendicular to the inclined plane during contact with the cut material. Combined with the inertia of the material itself after cutting, it can effectively reduce the degree of adhesion between the material and the inclined plane. At the same time, the auxiliary ladder plane II6 is arranged between the auxiliary ladder inclined planes I5 and II7 and plays an interruption role, effectively reducing the contact time between the material and the inclined plane, and further reducing the probability of material adhesion to the inclined plane. The auxiliary ladder plane I4 mainly serves as a transition between the auxiliary ladder section and the cutting edge concave tooth 3.

[0045] The auxiliary ladder section is connected to the cutting edge concave tooth 3 in the front direction through the auxiliary ladder plane I4, and to the upper surface 8 of the cutting edge in the rear direction. In the transverse direction, its side is the outer side surface 14 of the cutting edge.

[0046] Furthermore, the cutting and ejection parts of the cutting edge body have an optimized biomimetic curve in the transverse direction, and all points between adjacent curves are equidistant.

[0047] Taking the curve containing point A as an example, let point A be the origin of the coordinate system on the outer side 14 of the cutting edge. Let the direction from the front end to the rear end be the positive Y-axis, and the direction perpendicular to the side of the cutting edge containing point A and towards the other side of the cutting edge be the positive X-axis. The mathematical expression of this part of the curve is y = -0.5cos0.5x + 0.5, where x and y are both coordinate values ​​in the rectangular coordinate system II, and 0.0000 ≤ x ≤ 260.0000.

[0048] The convex portion of the curve where the maximum value of several y values ​​is reached can act as a transverse cutting tip, increasing the pressure when the cutting edge contacts the material, improving the cutting effect and increasing the cutting efficiency. At the same time, the concave portion of the curve can effectively gather the material, increasing the mass of the material in the concave portion, and cutting again along the cutting edge during the gathering process, ensuring the stability of the cutting operation.

[0049] Furthermore, the upper surface 10 of the mounting platform and the upper surface 8 of the cutting edge of the cutting edge body form a 92° angle, which ensures stable installation while making the front end of the cutting edge tooth 1 contact the inner cutting edge of the mating tool, preventing material from getting stuck in the gap between them during operation.

[0050] Furthermore, the mounting platform is pre-set with racetrack-shaped bolt mounting holes to facilitate adjustment of the cutting edge position during the process of the cutting edge as a whole and the mating tool. The mounting platform is 1.8mm thick.

[0051] Furthermore, a stepped platform is provided on its outer cutting edge to effectively reduce the adhesion of materials to the outer cutting edge.

[0052] Beneficial effects of the present invention

[0053] 1. The protrusions in the cutting edge protrusions 1 of the present invention are arranged in a multi-angle manner, which can effectively increase the contact area between the material and the cutting edge, thereby improving the shredding efficiency.

[0054] 2. The concave teeth in the cutting edge concave teeth 3 of the present invention are arranged in a form with equal intervals at the same angle, which provides a certain stable cutting area, and the sharp angle can effectively cut the material, thus effectively improving cutting stability and efficiency.

[0055] 3. The auxiliary ladder section of the present invention is arranged in a form with equal intervals at the same angle. This section forms an effective material throwing structure through the cross arrangement of planes and inclined planes. The auxiliary ladder inclined plane I5 and the auxiliary ladder inclined plane II7 can provide the material with a support force perpendicular to the inclined plane during contact with the cut material. Combined with the inertia of the material itself after cutting, it can effectively reduce the degree of adhesion between the material and the inclined plane. At the same time, the auxiliary ladder plane II6 is arranged between the auxiliary ladder inclined plane I5 and the auxiliary ladder inclined plane II7, which plays an interruption role, effectively reducing the contact time between the material and the inclined plane, and further reducing the probability of adhesion between the material and the inclined plane. The auxiliary ladder plane I4 mainly serves as a transition between the auxiliary ladder section and the cutting edge concave tooth 3.

[0056] 4. The convex part of the cutting edge curve of the present invention, where the y-values ​​are at their maximum values, can act as a transverse cutting tip, increasing the pressure when the cutting edge contacts the material, improving the cutting effect and increasing the cutting efficiency. At the same time, the concave part of the curve can effectively gather the material, increasing the mass of the material in the concave part, and cutting again along the cutting edge during the gathering process, ensuring the stability of the cutting operation.

[0057] 5. In this invention, the mounting platform is pre-set with racetrack-shaped bolt mounting holes, which facilitates the adjustment of the cutting edge position during the process of the cutting edge as a whole and the tool being used, thus expanding the applicability of the tool. Attached Figure Description

[0058] Figure 1 This is an overall schematic diagram of the biomimetic micro / nano structure forage chopping tool of the present invention;

[0059] Figure 2 This is a top view and AA cross-sectional schematic diagram of the biomimetic micro-nano structure forage chopping tool of the present invention;

[0060] Figure 3 This is a schematic diagram of the main structural components of the main cutting edge of the biomimetic micro / nano structure forage chopper of the present invention;

[0061] Figure 4 This is an overall schematic diagram of the main cutting edge of the biomimetic micro / nano structure forage chopping tool of the present invention;

[0062] Figure 5 yes Figure 4 AA section view diagram;

[0063] Figure 6 This is a side view of the tooth tip of the main cutting edge of the biomimetic micro-nano structure forage chopping tool of the present invention;

[0064] Figure 7 This is a front view schematic diagram of the main body of the forage chopping tool with a biomimetic micro-nano structure of the present invention, consisting of 1.5 circulation units.

[0065] Figure 8 This is a side view schematic diagram of the main cutting edge of the biomimetic micro-nano structure forage chopping tool of the present invention;

[0066] Figure 9 This is a schematic diagram of the installation of the biomimetic micro-nano structure forage chopping tool of the present invention.

[0067] Figure 1-9 The labels are as follows: 1-Cutting edge protrusion, 2-Transition plane, 3-Cutting edge concave tooth, 4-Auxiliary ladder plane I, 5-Auxiliary ladder inclined surface I, 6-Auxiliary ladder plane II, 7-Auxiliary ladder inclined surface II, 8-Upper surface of cutting edge, 9-Rear surface of cutting edge, 10-Upper surface of mounting platform I, 11-Inner side of mounting platform I, 12-Upper surface of mounting platform II, 13-Inner side of mounting platform II, 14-Outer side of cutting edge, 15-Rear surface of mounting platform, 16-Matching tool mounting surface, 17-Integral tool mounting hole, 18-Outer side of mounting platform, 19-Lower surface of mounting platform, 20-Transition curved surface, 21-Lower surface of cutting edge, 22-Matching tool mounting hole, 23-Mounting bolt. Detailed Implementation

[0068] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0069] like Figures 1-9 As shown, a biomimetic micro / nano structure forage chopping tool has a main cutting edge, which includes two parts: the main cutting edge and a tool adapted to it.

[0070] The transverse outline of the main cutting edge and the auxiliary ladder is derived from the biomimetic optimization of the lower incisor curve of a beaver in nature.

[0071] The cutting edge convex tooth 1 and cutting edge concave tooth 3, which are established along the tooth direction according to a periodic curve between the auxiliary ladder plane I4 and the lower surface 21 of the cutting edge, together form the functional cutting part.

[0072] The main cutting edge body consists of, from front to back, a cutting edge protrusion 1, a transition plane 2, a cutting edge concave tooth 3, an auxiliary ladder plane I 4, an auxiliary ladder inclined surface I 5, an auxiliary ladder plane II 6, an auxiliary ladder inclined surface II 7, and a cutting edge upper surface 8. Except for the front end of the cutting edge protrusion 1 and the rear end of the cutting edge upper surface 8, the rear end contour lines of each part above the main cutting edge body coincide with the front end contour lines of the parts behind it, and the tangents at corresponding points on the curve contour lines between each part are parallel. Below the main cutting edge body is a cutting edge lower surface 21 parallel to the cutting edge upper surface 8. The front ends of the upper and lower parts of the main cutting edge body are connected by the front cutting edge line of the cutting edge protrusion 1 coinciding with the front end contour line of the cutting edge lower surface 21. Except for the mounting platform part, the rear ends are connected by the cutting edge rear surface 9. The cutting edge rear surface 9 is formed by the rear end contour line of the cutting edge upper surface 8 perpendicularly downwards to the upper surface I 10 of the mounting platform and the cutting edge lower surface 21.

[0073] The main cutting edge body and the tool mounting table are connected by the cutting edge rear surface 9. The mounting table consists of two identical rectangular prisms with bolt mounting holes, arranged symmetrically about the central axis of the main cutting edge body. One of the mounting tables consists of, from top to bottom, the upper mounting surface I10, the inner side I11, the upper mounting surface II12, the inner side II13, and the lower mounting surface 19. The side parts are the outer side 18 of the two mounting tables facing each other, the rear mounting surface 15 of the mounting table, and the outer cutting edge side 14 connected to the side of the main cutting edge body. The upper mounting surface I10, the upper mounting surface II12, and the lower mounting surface 19 are parallel to each other, and the outer side 18 of the mounting table is parallel to the outer cutting edge side 14. The lower mounting surface 19 is connected to the lower cutting edge surface 21 of the main cutting edge body through a transition surface 20.

[0074] The compatible tool part includes a tool mounting surface 16, a tool mounting hole 17, and a tool mounting hole 22. The tool mounting hole 17 and the tool mounting hole 22 are symmetrical about the center line of the tool. During installation, the tool mounting surface 16 coincides with the lower surface 19 of the mounting table of the main cutting edge. Then, the mounting bolt 23 is passed through the reserved mounting hole on the mounting table of the main cutting edge and the tool mounting hole 22 on the tool and tightened.

[0075] exist Figure 3 , Figure 6 and Figure 7In a further embodiment of the present invention, the main cutting edge of the biomimetic micro-nano structure forage chopper has a cutting edge tooth 1 whose longitudinal section is composed of multiple teeth in different directions arranged in a certain pattern between point A and point L. The arrangement pattern is that the tooth tips A, C, E, G, I, and K of each tooth are all on an arc with the line segment connecting point A and point L as the chord and the chord length corresponding to an angle of 45°. The AL is divided into 6 segments, and the perpendicular lines to the chord length are drawn through points B, D, F, H, and J. The intersection of these perpendicular lines with the arc is the position of each tooth tip.

[0076] On the outer surface 14 of the cutting edge, a plane rectangular coordinate system I is established with point A as the origin, the direction from the front end to the rear end as the positive X-axis, and the direction from the lower surface 21 of the cutting edge to the upper surface 8 of the cutting edge as the positive Y-axis. A~L are all on this coordinate system, and there are straight lines between each pair of adjacent points.

[0077] The mathematical expression for the straight line segment AB is: y = 0.4286x, where x and y are coordinate values ​​in rectangular coordinate system I, and 0 ≤ x ≤ 0.0583, 0 ≤ y ≤ 0.0250;

[0078] The mathematical expression for the straight line segment BC is: y = -2.3329x + 0.1611, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.0489 ≤ x ≤ 0.0583, 0.0250 ≤ y ≤ 0.0471;

[0079] The mathematical expression for the straight line segment CD is: y = 0.0430x + 0.0450, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.0489 ≤ x ≤ 0.1167, 0.0471 ≤ y ≤ 0.0500;

[0080] The mathematical expression for the straight line segment DE is: y = −2.3333x + 0.3222, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.1072 ≤ x ≤ 0.1167, 0.0500 ≤ y ≤ 0.0722;

[0081] The mathematical expression for the straight line segment EF is: y = 0.0413x + 0.0678, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.1072 ≤ x ≤ 0.1750, 0.0722 ≤ y ≤ 0.0750;

[0082] The mathematical expression for the straight line segment FG is: y = -2.3333x + 0.4833, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.1655 ≤ x ≤ 0.1750, 0.0750 ≤ y ≤ 0.0972;

[0083] The mathematical expression for the straight line segment GH is: y = 0.0413x + 0.0904, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.1655 ≤ x ≤ 0.2333, 0.0972 ≤ y ≤ 0.1000;

[0084] The mathematical expression for the straight line segment HI is: y = -2.3333x + 0.6444, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.2238 ≤ x ≤ 0.2333, 0.1000 ≤ y ≤ 0.1222;

[0085] The mathematical expression for the straight line segment IJ is: y = 0.0413x + 0.1130, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.2238 ≤ x ≤ 0.2917, 0.1222 ≤ y ≤ 0.1250;

[0086] The mathematical expression for the straight line segment JK is: y = -2.3333x + 0.8056, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.2822 ≤ x ≤ 0.2917, 0.1250 ≤ y ≤ 0.1471;

[0087] The mathematical expression for the straight line segment KL is: y = 0.0428x + 0.1350, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.2822 ≤ x ≤ 0.3500, 0.1471 ≤ y ≤ 0.1500;

[0088] Some of the protruding teeth are arranged at multiple angles, which can effectively increase the contact area between the material and the cutting edge, thereby improving the shredding efficiency;

[0089] The cutting edge protruding tooth 1 and the cutting edge concave tooth 3 are connected by a transition plane 2. Its side is the outer side surface 14 of the cutting edge, and the intersection line between it and the lower surface 21 of the cutting edge constitutes the cutting edge represented by point A in the cutting edge protruding tooth 1.

[0090] exist Figure 3 , Figure 6 and Figure 7 In a further embodiment of the present invention, the main cutting edge of the biomimetic micro-nano structure forage chopping tool has a longitudinal section composed of multiple concave teeth in the same direction arranged in a certain pattern between points L and S. The arrangement pattern is that the tooth tips N, P, and R of each concave tooth are all on the straight line connected by points L and S, and the included angle between adjacent line segments at each end is 45°.

[0091] On the outer surface 14 of the cutting edge, a plane rectangular coordinate system I is established with point A as the origin, the direction from the front end to the rear end as the positive X-axis, and the direction from the lower surface 21 of the cutting edge to the upper surface 8 of the cutting edge as the positive Y-axis. L~S are all on this coordinate system, and there are straight lines between each pair of adjacent points.

[0092] The mathematical expression for the straight line segment LM is: y = 0.1500, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.3500 ≤ x ≤ 0.5167;

[0093] The mathematical expression for the MN segment of the straight line is: y = -x + 0.6667, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.4667 ≤ x ≤ 0.5167, 0.1500 ≤ y ≤ 0.2000;

[0094] The mathematical expression for the NO segment of the straight line is: y = 0.2000, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.4667 ≤ x ≤ 0.6333;

[0095] The mathematical expression for the straight line segment OP is: y = -x + 0.8333, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.5833 ≤ x ≤ 0.6333, 0.2000 ≤ y ≤ 0.2500;

[0096] The mathematical expression for the straight line segment PQ is: y = 0.2500, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.5833 ≤ x ≤ 0.7500;

[0097] The mathematical expression for the straight line of segment QR is: y = -x + 1.0000, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.7000 ≤ x ≤ 0.7500, 0.2500 ≤ y ≤ 0.3000;

[0098] The straight line of the RS segment serves as the contour for forming the concave tooth 3 of the cutting edge, and it mainly belongs to the auxiliary ladder plane I4;

[0099] The concave cutting edge 3 and the convex cutting edge 1 are connected by a transition plane 2. The side of the convex cutting edge 14 is the outer side of the cutting edge. The intersection line between the convex cutting edge 3 and the auxiliary ladder plane I 4 forms the cutting edge represented by point R in the concave cutting edge 3. The convex cutting edge 3 is connected to the auxiliary ladder section through the transition of the auxiliary ladder plane I.

[0100] exist Figure 3 , Figure 7 and Figure 8In a further embodiment of the present invention, the auxiliary ladder section includes an auxiliary ladder plane I4, an auxiliary ladder inclined plane I5, an auxiliary ladder plane II6, and an auxiliary ladder inclined plane II7. Its longitudinal section is composed of two pairs of equidistant curves between points R and V arranged according to a certain rule. The arrangement rule is that the auxiliary ladder plane I4 and the auxiliary ladder plane II6, and the auxiliary ladder inclined plane I5 and the auxiliary ladder inclined plane II7 are parallel to each other and of equal length.

[0101] On the outer surface 14 of the cutting edge, a plane rectangular coordinate system I is established with point A as the origin, the direction from the front end to the rear end as the positive X-axis, and the direction from the lower surface 21 of the cutting edge to the upper surface 8 of the cutting edge as the positive Y-axis. R~V are all on this coordinate system, and there are straight lines between each pair of adjacent points.

[0102] The mathematical expression for the straight line segment RS is: y = 0.3000, where x and y are coordinate values ​​in rectangular coordinate system I, and 0.7000 ≤ x ≤ 1.0000;

[0103] The mathematical expression for the straight line in segment ST is: y = 0.4286x - 0.1286, where x and y are coordinate values ​​in rectangular coordinate system I, and 1.0000 ≤ x ≤ 1.7000, 0.3000 ≤ y ≤ 0.6000;

[0104] The mathematical expression for the straight line segment TU is: y = 0.6000, where x and y are coordinate values ​​in rectangular coordinate system I, and 1.7000 ≤ x ≤ 2.0000;

[0105] The mathematical expression for the straight line of segment UV is: y = 0.4286x - 0.2572, where x and y are coordinate values ​​in rectangular coordinate system I, and 2.0000 ≤ x ≤ 2.7000, 0.6000 ≤ y ≤ 0.9000;

[0106] The auxiliary ladder sections are arranged at equal intervals at the same angle. This section forms an effective material throwing structure through the intersecting arrangement of planes and inclined planes. The auxiliary ladder inclined planes I5 and II7 can provide the material with a support force perpendicular to the inclined plane during contact with the cut material. Combined with the inertia of the material itself after cutting, it can effectively reduce the degree of adhesion between the material and the inclined plane. At the same time, the auxiliary ladder plane II6 is arranged between the auxiliary ladder inclined planes I5 and II7 and plays an interruption role, effectively reducing the contact time between the material and the inclined plane, and further reducing the probability of material adhesion to the inclined plane. The auxiliary ladder plane I4 mainly serves as a transition between the auxiliary ladder section and the cutting edge concave tooth 3.

[0107] The auxiliary ladder section is connected to the cutting edge concave tooth 3 in the front direction through the auxiliary ladder plane I4, and to the upper surface 8 of the cutting edge in the rear direction. In the transverse direction, its side is the outer side surface 14 of the cutting edge.

[0108] exist Figure 3 , Figure 4 and Figure 7 In a further embodiment of the present invention, the outer contour of the cutting and blasting part of the cutting edge body in the transverse direction is an optimized biomimetic curve, and the points between each adjacent curve are equidistant.

[0109] Taking the curve containing point A as an example, let point A be the origin of the coordinate system on the outer side 14 of the cutting edge. Let the direction from the front end to the rear end be the positive Y-axis, and the direction perpendicular to the side of the cutting edge containing point A and towards the other side of the cutting edge be the positive X-axis. The mathematical expression of this part of the curve is y = -0.5cos0.5x + 0.5, where x and y are both coordinate values ​​in the rectangular coordinate system II, and 0.0000 ≤ x ≤ 260.0000.

[0110] The convex part of the curve where several y values ​​are maximized can act as a transverse cutting tip, increasing the pressure when the cutting edge contacts the material, improving the cutting effect and increasing the cutting efficiency. At the same time, the concave part of the curve can effectively gather the material, increasing the mass of the material in the concave part, and cutting again along the cutting edge during the gathering process, ensuring the stability of the cutting operation.

[0111] exist Figure 4 and Figure 5 In a further embodiment of the present invention, the upper surface 10 of the mounting platform of the mounting platform portion forms a 92° angle with the upper surface 8 of the cutting edge of the cutting edge body. This ensures stable installation while making the foremost tip of the cutting edge protrusion 1 contact the inner cutting edge surface of the mating tool, preventing material from getting stuck in the gap between them during operation.

[0112] exist Figure 1 , Figure 4 , Figure 5 and Figure 9 As a further embodiment of the present invention, the mounting platform is pre-set with racetrack-shaped bolt mounting holes to facilitate adjustment of the cutting edge position during the process of the cutting edge as a whole and the tool being fitted together. The thickness of the mounting platform is 1.8mm.

[0113] exist Figure 1 , Figure 2 and Figure 9 In a further embodiment of the present invention, the outer cutting surface of the main cutting edge of the biomimetic micro-nano structure forage chopper is provided with a stepped platform to effectively reduce the adhesion of material to the outer cutting surface.

[0114] The working principle of this invention is as follows:

[0115] This invention relates to a biomimetic micro / nano structure forage chopper with a main cutting edge based on the shape of a beaver's lower incisors. In its structure, the cutting edge protrusion 1 and cutting edge concave teeth 3, established along the tooth direction according to a periodic curve between the auxiliary step plane I4 and the lower surface 21 of the cutting edge, together form a functional cutting part, creating a highly efficient biomimetic cutting edge. The transition plane 2 connects the cutting edge protrusion 1 and the cutting edge concave teeth 3. The auxiliary ladder sections are arranged at equal intervals with the same angle. This section forms an effective material throwing structure through the intersecting arrangement of planes and inclined planes. Auxiliary ladder inclined planes I5 and II7 provide a support force perpendicular to the inclined plane to the cut material during contact. Combined with the material's own inertia after cutting, this effectively reduces the adhesion between the material and the inclined plane. Simultaneously, auxiliary ladder plane II6, positioned between auxiliary ladder inclined planes I5 and II7, acts as an interruption, effectively reducing the contact time between the material and the inclined plane, further lowering the probability of adhesion. Auxiliary ladder plane I4 mainly serves as a transition between the auxiliary ladder section and the cutting edge concave teeth 3. The convex portion of the curve, where several y-values ​​reach their maximum, acts as a transverse cutting tip, increasing the pressure when the cutting edge contacts the material, improving the cutting effect and efficiency. Simultaneously, the concave portion of the curve effectively gathers the material, increasing its mass, and during this gathering process, it cuts again along the cutting edge, ensuring the stability of the cutting operation. The mounting platform has pre-set bolt mounting holes in the shape of a racetrack, which facilitates the adjustment of the cutting edge position during the process of the cutting edge as a whole and the matching tool, effectively expanding the application range of the main cutting edge.

[0116] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A main cutting edge of a forage chopper tool for bionic micro- and nano-structured grasses, characterized in that: The tool comprises a main cutting edge and a tool body matched with the main cutting edge; The cutting edge of the main cutting edge body part and the lateral profile contour line of the auxiliary stair are optimized by imitating the curve of the lower tooth gate of a beaver's tooth in nature; The cutting edge convex tooth (1) and the cutting edge concave tooth (3) between the auxiliary stair plane I (4) and the cutting edge lower surface (21) form a functional cutting part according to a periodic curve along the tooth direction.

2. The main cutting edge of the bionic micro-nano structure grass chopping tool according to claim 1, characterized in that: the upper part of the main cutting edge body part is provided with a cutting edge convex tooth (1), a transition plane (2), a cutting edge concave tooth (3), an auxiliary stair plane I (4), an auxiliary stair slope I (5), an auxiliary stair plane II (6), an auxiliary stair slope II (7) and a cutting edge upper surface (8) from front to back, the rear end profile line of each part from front to back is coincident with the front end profile line of the rear part, and the tangent of the corresponding points on the curve profile line between the parts is parallel; the lower part of the main cutting edge body part is provided with a cutting edge lower surface (21) parallel to the cutting edge upper surface (8); the front end of the upper part and the front end of the lower part of the main cutting edge body part are connected through the coincident cutting edge line of the frontmost end of the cutting edge convex tooth (1) and the front end profile line of the cutting edge lower surface (21), and the rear end is connected through the cutting edge rear surface (9) except the mounting table part; the cutting edge rear surface (9) is formed by the rear end profile line of the cutting edge upper surface (8) being perpendicular to the cutting edge upper surface (8) and downward to the mounting table upper surface I (10) and the cutting edge lower surface (21); the main cutting edge body part and the tool mounting table part are connected through the cutting edge rear surface (9); the mounting table part is a rectangular parallelepiped with bolt mounting holes, which is symmetrically arranged with the main cutting edge body part, and one of the mounting table parts is sequentially provided with a mounting table upper surface I (10), a mounting table inner side I (11), a mounting table upper surface II (12), a mounting table inner side II (13) and a mounting table lower surface (19) from top to bottom; the side parts are a mounting table outer side (18) of the opposite sides of the two mounting table parts, a mounting table rear surface (15) of the rear part of the mounting table and a cutting edge outer side (14) connected with the side of the main cutting edge body part; the mounting table upper surface I (10), the mounting table upper surface II (12) and the mounting table lower surface (19) are parallel to each other, and the mounting table outer side (18) and the cutting edge outer side (14) are parallel to each other; the mounting table lower surface (19) and the cutting edge lower surface (21) of the lower part of the main cutting edge body part are connected through a transition curved surface (20). ​ The matched tool part comprises a matched tool mounting surface (16), a tool whole mounting hole (17) and a matched tool mounting hole (22), and the tool whole mounting hole (17) and the matched tool mounting hole (22) are symmetrical about the center line of the matched tool.

3. The main cutting edge of the bionic micro-nano structure grass chopping cutter according to claim 2, characterized in that: the longitudinal section of the cutting edge tooth (1) is composed of a plurality of different direction teeth arranged in a certain rule between the A point and the L point, the rule is that the tooth tips A, C, E, G, I and K points are on the circular arc with the line segment connected by the A point and the L point as the chord, the chord length corresponds to the angle of 45°, the AL is divided into six segments, the vertical lines of the chord length are drawn through the B, D, F, H and J points, and the intersection points of the vertical lines and the circular arc are the tooth tip positions; a plane rectangular coordinate system I is established on the cutting edge outer surface (14) with the A point as the coordinate origin, the front end to the rear end direction is the positive direction of the X axis, and the direction from the cutting edge lower surface (21) to the cutting edge upper surface (8) is the positive direction of the Y axis, wherein the A~L are on the coordinate system, and the straight lines between the adjacent two points are straight lines; the mathematical expression of the AB segment straight line is y=0.4286x, wherein x and y are coordinate values in the rectangular coordinate system I, and 0≤x≤0.0583 and 0≤y≤0.0250; the mathematical expression of the BC segment straight line is y=-2.3329x+0.1611, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.0489≤x≤0.0583 and 0.0250≤y≤0.0471; the mathematical expression of the CD segment straight line is y=0.0430x+0.0450, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.0489≤x≤0.1167 and 0.0471≤y≤0.0500; the mathematical expression of the DE segment straight line is y=-2.3333x+0.3222, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.1072≤x≤0.1167 and 0.0500≤y≤0.0722; the mathematical expression of the EF segment straight line is y=0.0413x+0.0678, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.1072≤x≤0.1750 and 0.0722≤y≤0.0750; the mathematical expression of the FG segment straight line is y=-2.3333x+0.4833, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.1655≤x≤0.1750 and 0.0750≤y≤0.0972. The mathematical expression of the GH segment straight line is y=0.0413x+0.0904, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.1655≤x≤0.2333, 0.0972≤y≤0.1000; The mathematical expression of the HI segment straight line is y=-2.3333x+0.6444, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.2238≤x≤0.2333, 0.1000≤y≤0.1222; The mathematical expression of the IJ segment straight line is y=0.0413x+0.1130, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.2238≤x≤0.2917, 0.1222≤y≤0.1250; The mathematical expression of the JK segment straight line is y=-2.3333x+0.8056, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.2822≤x≤0.2917, 0.1250≤y≤0.1471; The mathematical expression of the KL segment straight line is y=0.0428x+0.1350, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.2822≤x≤0.3500, 0.1471≤y≤0.1500; The convex tooth (1) and the concave tooth (3) are connected by a transition plane (2), and the side surface thereof is a cutting edge outer side surface (14), and the intersection line between the cutting edge outer side surface (14) and a cutting edge lower surface (21) constitutes a cutting edge represented by point A in the convex tooth (1).

4. The main cutting edge of the bionic micro-nano structure grass chopping cutter according to claim 2, characterized in that: the longitudinal section of the concave tooth (3) is composed of a plurality of concave teeth in the same direction between L point and S point arranged according to a certain rule, and the arrangement rule is that the tooth tips N, P and R points of each concave tooth are on the straight line connecting L point and S point, and the included angle between every two adjacent line segments is 45°; a plane rectangular coordinate system I is established on the cutting edge outer side surface (14) with A point as the coordinate origin, the front end to the rear end direction is the positive direction of the X axis, and the direction from the cutting edge lower surface (21) to the cutting edge upper surface (8) is the positive direction of the Y axis, wherein L~S are on the coordinate system, and each two adjacent points are straight lines; the mathematical expression of the LM segment straight line is y=0.1500, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.3500≤x≤0.5167; the mathematical expression of the MN segment straight line is y=-x+0.6667, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.4667≤x≤0.5167, 0.1500≤y≤0.2000; the mathematical expression of the NO segment straight line is y=0.2000, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.4667≤x≤0.6333; The mathematical expression of the OP segment straight line is y=-x+0.8333, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.5833≤x≤0.6333, 0.2000≤y≤0.2500; The mathematical expression of the PQ segment straight line is y=0.2500, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.5833≤x≤0.7500; The mathematical expression of the QR segment straight line is y=-x+1.0000, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.7000≤x≤0.7500, 0.2500≤y≤0.3000; The RS segment straight line is one of the profiles of the cutting edge concave tooth (3); The cutting edge concave tooth (3) is connected with the cutting edge convex tooth (1) through the transition plane (2), the side surface thereof is the cutting edge outer side surface (14), the intersection line between the cutting edge outer side surface (14) and the auxiliary stair plane I (4) constitutes the cutting edge represented by the R point in the cutting edge concave tooth (3), and the transition through the auxiliary stair plane I is connected with the auxiliary stair portion.

5. The main cutting edge of the bionic micro-nano structure grass cutting cutter according to claim 4, characterized in that: The auxiliary stair portion comprises the auxiliary stair plane I (4), the auxiliary stair inclined plane I (5), the auxiliary stair plane II (6) and the auxiliary stair inclined plane II (7), and two pairs of equidistant curves between the R point and the V point are arranged in a certain rule in the longitudinal section, and the arrangement rule is that the auxiliary stair plane I (4) and the auxiliary stair plane II (6) and the auxiliary stair inclined plane I (5) and the auxiliary stair inclined plane II (7) are parallel and equal in length; A plane rectangular coordinate system I is established on the cutting edge outer side surface (14) with the A point as the coordinate origin, the front end to the rear end direction is the positive direction of the X axis, and the direction from the cutting edge lower surface (21) to the cutting edge upper surface (8) is the positive direction of the Y axis, wherein R~V are on the coordinate system, and each two adjacent points are straight lines; The mathematical expression of the RS segment straight line is y=0.3000, wherein x and y are coordinate values in the rectangular coordinate system I, and 0.7000≤x≤1.0000; The mathematical expression of the ST segment straight line is y=0.4286x-0.1286, wherein x and y are coordinate values in the rectangular coordinate system I, and 1.0000≤x≤1.7000, 0.3000≤y≤0.6000; The mathematical expression of the TU segment straight line is y=0.6000, wherein x and y are coordinate values in the rectangular coordinate system I, and 1.7000≤x≤2.0000; The mathematical expression of the UV segment straight line is y=0.4286x-0.2572, wherein x and y are coordinate values in the rectangular coordinate system I, and 2.0000≤x≤2.7000, 0.6000≤y≤0.9000; The auxiliary step portion is connected with the cutting blade concave tooth (3) in front through the auxiliary step plane I (4) and connected with the cutting blade upper surface (8) in back in the front-back direction, and its side surface is the cutting blade outer side surface (14) in the lateral direction.

6. The main cutting edge of a bionic micro-nano structure grass cutting cutter according to claim 2, characterized in that: The cutting and throwing part of the cutting blade body is an optimized bionic curve in the lateral direction, and the distance between each point of adjacent curves is equal; Taking the curve where point A is located as an example, a plane rectangular coordinate system II is established with point A as the coordinate origin, the front-to-back direction as the positive direction of Y axis, and the direction perpendicular to the cutting blade side surface where point A is located to the other side surface of the cutting blade as the positive direction of X axis, the mathematical expression of the part of the curve is y=-0.5cos(0.5x)+0.5, wherein x and y are coordinate values in the rectangular coordinate system II, and 0.0000≤x≤260.0000.

7. The main cutting edge of a bionic micro-nano structure forage chopping knife according to claim 2, characterized in that: The mounting table upper surface (10) of the mounting table portion and the cutting blade upper surface (8) of the cutting blade body form an angle of 92°, which ensures the stability of mounting and makes the frontmost end of the cutting blade convex tooth (1) contact with the inner blade surface of the matched cutter to prevent the material from being stuck in the gap between them during operation.

8. The main cutting edge of a bionic micro-nano structure forage chopping knife according to claim 2, characterized in that: The mounting table is provided with a runway-shaped bolt mounting hole, which facilitates the adjustment of the position of the cutting blade during the matching process of the cutting blade and the matched cutter, and the thickness of the mounting table is 1.8 mm.

9. The main cutting edge of a bionic micro-nano structure forage chopping knife according to claim 2, characterized in that: The outer blade surface is provided with a stepped step, which effectively reduces the adhesion of the material on the outer blade surface.

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