Punching tool suitable for composite board

Abstract

The utility model belongs to the field of milling machine tools, and particularly relates to a punching tool suitable for composite boards, which comprises a forming tool bit, a tool body, a pre-cutting tool bit and a chip removal device, the pre-cutting tool bit and the forming tool bit are distributed at intervals along the axial direction of the tool body, the pre-cutting tool bit is arranged at one end part of the tool body, and the chip removal device is arranged at the other end part of the tool body. The forming tool bit is located at the position, close to the inner side of the end, of the pre-cutting tool bit, and the diameter of the forming tool bit is larger than that of the pre-cutting tool bit. The inner wall of the composite board forming hole can be prevented from being damaged, and the size precision of the forming hole is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of milling machine tools, and in particular relates to a punching tool suitable for composite plates. Background Art

[0002] All walks of life require the use of plates. In order to fix plates to plates or plates to parts, drilling is usually required. For traditional plates such as wood and steel, the existing processing tools and equipment are relatively mature, the punching effect is very good, and the punching efficiency is very high. However, when punching composite plates made of plates of different materials, if traditional processing tools are used for drilling, it is easy to cause dimensional accuracy and apparent quality problems. The specific manifestations are: when the composite plate is made of "aluminum plate-hard foam-plywood" bonded and pressed together, the aluminum chips after the surface aluminum plate is processed will damage the inner wall of the foam hole when processing the foam layer; when both surfaces of the composite plate are wood, the toughness of the plate will cause slight deformation (arching) when the drill bit is about to cut through, and the cutting mouth will have problems with edge bursting and burrs due to the long and continuous wood fibers. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the composite sheet is currently punched with a tool used for punching holes in conventional material sheets, which easily causes errors in the dimensional accuracy of the holes and poor apparent quality.

[0004] In order to solve the above technical problems, the utility model provides a punching tool suitable for composite panels, including a forming cutter head, a blade body, a pre-cutting cutter head and a chip removal device, wherein the pre-cutting cutter head and the forming cutter head are spaced apart along the axial direction of the blade body, the pre-cutting cutter head is on one of the ends of the blade body, the forming cutter head is located near the pre-cutting cutter head and on the inner side of the end, and the diameter of the forming cutter head is larger than the diameter of the pre-cutting cutter head.

[0005] Preferably, the pre-cutting blade head includes a center positioning tip, a first pre-cutting blade and a second pre-cutting blade, the first pre-cutting blade and the second pre-cutting blade are respectively arranged on both sides of the center positioning tip, the first pre-cutting blade includes a first pre-cutting tip and a first pre-cutting edge, the first pre-cutting tip is located at the end of the first pre-cutting blade, and the first pre-cutting edge is located at the side of the first pre-cutting blade; the second pre-cutting blade includes a second pre-cutting tip and a second pre-cutting edge, the second pre-cutting tip is located at the end of the second pre-cutting blade, the second pre-cutting edge is located at the side of the second pre-cutting blade, and the center positioning tip slightly protrudes toward the outside of the end compared with the first pre-cutting tip and the second pre-cutting tip.

[0006] Preferably, the side surface where the first pre-cutting tip and the center positioning tip are connected to each other is provided with a first chamfer, and the side surface where the second pre-cutting tip and the center positioning tip are connected to each other is provided with a second chamfer.

[0007] Preferably, the forming cutter head includes a first forming blade and a second forming blade arranged circumferentially, the first forming blade includes a first cutting tip and a first forming edge, the first cutting tip is arranged at the end of the first forming blade, and the first forming edge is arranged on the side of the first forming blade; the second forming blade includes a second cutting tip and a second forming edge, the second cutting tip is arranged at the end of the second forming blade, and the second forming edge is arranged on the side of the second forming blade.

[0008] Preferably, a clamping platform is provided at the rear section of the blade.

[0009] Preferably, the chip removal device includes an air inlet, an air outlet, and an air duct, the air inlet being arranged at one end of the blade body away from the pre-cutting blade head, the air outlet being arranged on the blade body and located near the forming blade head, the air duct being arranged between the air inlet and the air outlet, the air duct extending along the axial direction of the blade body, and the two ends of the air duct being respectively connected to the air inlet and the air outlet.

[0010] Preferably, a third chamfer is provided on the first forming blade near the pre-cutting head, and a fourth chamfer is provided on the second forming blade near the pre-cutting head.

[0011] The technical solution of the utility model has the following beneficial effects:

[0012] The utility model is provided with a forming cutter head and a pre-cutting cutter head, and the diameter of the forming cutter head is larger than that of the pre-cutting cutter head. When punching holes, the pre-cutting cutter head can first process a pre-cut hole smaller than the diameter of the forming hole, and the forming cutter head can expand the pre-cut hole to process the forming hole in one go. Using a pre-cutting cutter to first process the pre-cut hole can effectively avoid the edge bursting and burrs caused by directly processing the forming hole on the composite board with a wood surface, thereby ensuring the apparent quality of the forming hole processing; and the utility model is provided with a chip removal device to remove chips when punching holes. For the composite board formed by bonding and pressing the three materials of "aluminum plate-hard foam-plywood", it can avoid that aluminum chips will damage the inner wall of the foam hole when processing the foam layer, thereby ensuring the apparent quality and processing accuracy of the forming hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall appearance of the utility model;

[0015] Figure 2 This is a partial view of the utility model from the first perspective;

[0016] Figure 3 This is a partial view of the second viewing angle of the present utility model;

[0017] Figure 4 This is a partial view of the utility model from the third viewing angle;

[0018] Figure 5 It is a three-dimensional cross-sectional view of the utility model.

[0019] Explanation of the accompanying drawings: 1. Molding cutter head; 11. First molding blade; 111. First cutting tip; 112. First molding edge; 12. Second molding blade; 121. Second cutting tip; 122. Second molding edge; 2. Blade; 21. Clamping platform; 22. Air inlet; 23. Air duct; 24. Air outlet; 3. Pre-cutting cutter head; 31. Center positioning tip; 32. First pre-cutting blade; 321. First pre-cutting tip; 322. First pre-cutting edge; 33. Second pre-cutting blade; 331. Second pre-cutting tip; 332. Second pre-cutting edge; 4. First chamfer; 5. Second chamfer; 6. Third chamfer; 7. Fourth chamfer. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] The utility model provides a punching tool suitable for composite plates, comprising a forming cutter head 1, a blade body 2, a pre-cutting cutter head 3 and a chip removal device, wherein the pre-cutting cutter head 3 and the forming cutter head 1 are spaced apart along the axial direction of the blade body 2, the pre-cutting cutter head 3 is on one end of the blade body 2, the forming cutter head 1 is located near the pre-cutting cutter head 3 and close to the inner side of the end, and the diameter of the forming cutter head 1 is d 1 , the diameter of the pre-cutting head 3 is d 2 , d 1 >d 2 . The pre-cutting head 3 can first process a pre-cut hole that is smaller than the diameter of the forming hole, and the forming head 1 can expand the pre-cut hole to process the forming hole in one go. Using the pre-cutting head 3 to process the pre-cut hole first can effectively avoid the edge bursting and burrs caused by directly processing the forming hole on the composite board with a wood surface, thereby ensuring the apparent quality of the formed hole processing. The chip removal device removes chips when punching. For the composite board made of "aluminum plate-rigid foam-plywood" bonded and pressed together, it can avoid aluminum chips from damaging the inner wall of the foam hole when processing the foam layer, thereby ensuring the apparent quality and processing accuracy of the formed hole.

[0025] The pre-cutting blade 3 of the utility model comprises a center positioning top 31, a first pre-cutting blade 32 and a second pre-cutting blade 33, the first pre-cutting blade 32 and the second pre-cutting blade 33 are respectively arranged on both sides of the center positioning top 31, the first pre-cutting blade 32 comprises a first pre-cutting tip 321 and a first pre-cutting edge 322, the first pre-cutting tip is located at the end of the first pre-cutting blade 32, and the first pre-cutting edge 322 is located at the side of the first pre-cutting blade 32; the second pre-cutting blade 33 comprises a second pre-cutting tip 331 and a second pre-cutting edge 332, the second pre-cutting tip is located at the end of the second pre-cutting blade 33, and the second pre-cutting edge 332 is located at the side of the second pre-cutting blade 33, and the center positioning top 31 slightly protrudes toward the outside of the end compared with the first pre-cutting tip 321 and the second pre-cutting tip 331. The forming cutter head 1 includes a first forming blade 11 and a second forming blade 12 arranged circumferentially, the first forming blade 11 includes a first cutting tip 111 and a first forming edge 112, the first cutting tip 111 is arranged at the end of the first forming blade 11, and the first forming edge 112 is arranged on the side of the first forming blade 11; the second forming blade 12 includes a second cutting tip 121 and a second forming edge 122, the second cutting tip 121 is arranged at the end of the second forming blade 12, and the second forming edge 122 is arranged on the side of the second forming blade 12.

[0026] During the pre-cut hole processing, since the center positioning tip 31 protrudes outside, when the blade 2 is fed into the composite material, the center positioning tip 31 first presses against the center position of the circle of the hole to be processed, pierces the center of the circle, and performs positioning, and then the first pre-cutting tip 321 and the second pre-cutting tip 331 cut through the edge of the pre-cut hole, which can prevent the occurrence of edge bursting and burrs when processing the pre-cut hole, and then the blade 2 starts to rotate while feeding, and the first pre-cutting blade 322 and the second pre-cutting blade 332 start to perform pre-cut hole processing from the position where the edge of the pre-cut hole is cut through; the blade 2 stops rotating, but continues to feed toward the composite material, and the first entry cutting tip 111 and the second entry cutting tip 121 cut through the edge of the forming hole, which can prevent the occurrence of edge bursting and burrs when processing the forming hole, and then the blade 2 starts to rotate while feeding, and the first forming blade 112 and the second forming blade 122 start to perform forming hole processing from the position where the edge of the forming hole is cut through.

[0027] The side surface where the first pre-cutting blade tip 321 and the center positioning top 31 are connected to each other is provided with a first chamfer 4, and the side surface where the second pre-cutting blade tip 331 and the center positioning top 31 are connected to each other is provided with a second chamfer 5. On the one hand, the diameter of the pre-cutting blade head 3 can be reduced, thereby reducing the resistance of the pre-cutting blade head 3 when processing the pre-cut hole; on the other hand, the flat surface facilitates the falling of cutting chips.

[0028] The first forming blade 11 is provided with a third chamfer 6 near the pre-cutting head 3, and the second forming blade 12 is provided with a fourth chamfer 7 near the pre-cutting head 3. On the one hand, the diameter of the forming head 1 can be reduced, thereby reducing the resistance when the forming head 1 processes the forming hole; on the other hand, the flat surface facilitates the falling of cutting chips, which is conducive to chip removal.

[0029] A clamping platform 21 is provided at the rear section of the blade body 2 , and the blade body 2 is clamped by the handle through the clamping platform 21 .

[0030] The chip removal device includes an air inlet 22, an air outlet 24, and an air passage 23. The air inlet 22 is arranged at one end of the blade body 2 away from the pre-cutting blade head 3. The air outlet 24 is arranged on the blade body 2 and is located near the forming blade head 1. The air passage 23 is arranged between the air inlet 22 and the air outlet 24. The air passage 23 extends along the axial direction of the blade body 2. The two ends of the air passage 23 are respectively connected with the air inlet 22 and the air outlet 24. The spindle air blowing pipe is connected to the end of the tool handle. The gas blown out of the spindle air blowing pipe first enters the tool handle, then enters the air passage 23 through the air inlet 22, and then comes out from the air outlet 24 to blow away the cutting chips for chip removal.

[0031] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A punching tool suitable for composite board materials, comprising a forming tool head (1) and a tool body (2), characterized in that: It also comprises a pre-cutting cutter head (3) and a chip removal device, wherein the pre-cutting cutter head (3) and the forming cutter head (1) are spaced apart along the axial direction of the cutter body (2), the pre-cutting cutter head (3) is on one end of the cutter body (2), the forming cutter head (1) is located near the pre-cutting cutter head (3) and on the inner side of the end, and the diameter of the forming cutter head (1) is greater than the diameter of the pre-cutting cutter head (3).

2. A punching tool suitable for composite board material according to claim 1, characterized in that: The pre-cutting blade head (3) comprises a center positioning tip (31), a first pre-cutting blade (32) and a second pre-cutting blade (33), wherein the first pre-cutting blade (32) and the second pre-cutting blade (33) are respectively arranged on both sides of the center positioning tip (31), wherein the first pre-cutting blade (32) comprises a first pre-cutting tip (321) and a first pre-cutting edge (322), wherein the first pre-cutting tip is located at the end of the first pre-cutting blade (32), and the first pre-cutting edge (322) is located at the side of the first pre-cutting blade (32); the second pre-cutting blade (33) comprises a second pre-cutting tip (331) and a second pre-cutting edge (332), wherein the second pre-cutting tip is located at the end of the second pre-cutting blade (33), and the second pre-cutting edge (332) is located at the side of the second pre-cutting blade (33), and the center positioning tip (31) slightly protrudes toward the outside of the end compared with the first pre-cutting tip (321) and the second pre-cutting tip (331).

3. A punching tool suitable for composite board material according to claim 2, characterized in that: The side surface where the first pre-cutting tip (321) and the center positioning tip (31) are connected to each other is provided with a first chamfer (4), and the side surface where the second pre-cutting tip (331) and the center positioning tip (31) are connected to each other is provided with a second chamfer (5).

4. A punching tool suitable for composite board materials according to any one of claims 1 to 3, characterized in that: The forming blade head (1) comprises a first forming blade (11) and a second forming blade (12) which are arranged circumferentially, wherein the first forming blade (11) comprises a first cutting tip (111) and a first forming edge (112), wherein the first cutting tip (111) is arranged at the end of the first forming blade (11), and the first forming edge (112) is arranged on the side of the first forming blade (11); and the second forming blade (12) comprises a second cutting tip (121) and a second forming edge (122), wherein the second cutting tip (121) is arranged at the end of the second forming blade (12), and the second forming edge (122) is arranged on the side of the second forming blade (12).

5. The punching tool suitable for composite board material according to claim 4, characterized in that: The rear section of the blade body (2) is provided with a clamping platform (21).

6. A punching tool suitable for composite board material according to claim 5, characterized in that: The chip removal device comprises an air inlet (22), an air outlet (24), and an air duct (23); the air inlet (22) is arranged at an end of the blade body (2) away from the pre-cutting blade head (3); the air outlet (24) is arranged on the blade body (2) and is located near the forming blade head (1); the air duct (23) is arranged between the air inlet (22) and the air outlet (24); the air duct (23) extends along the axial direction of the blade body (2); and two ends of the air duct (23) are respectively connected to the air inlet (22) and the air outlet (24).

7. A punching tool suitable for composite board material according to claim 6, characterized in that: A third chamfer (6) is provided on the first forming blade (11) near the pre-cutting blade head (3), and a fourth chamfer (7) is provided on the second forming blade (12) near the pre-cutting blade head (3).

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