Polycrystalline cubic boron nitride cutter for nodular cast iron

Abstract

The polycrystalline cubic boron nitride cutter comprises an alloy base body, four cutter body mounting grooves are formed in the alloy base body, superhard blades capable of being positioned are slidably connected into the cutter body mounting grooves, and a reinforcing plate is connected with the alloy base body through four locking mechanisms. The locking mechanism comprises a connecting rod fixed to the bottom of the reinforcing plate, a locking hole is formed in the connecting rod, a connecting groove is formed in the alloy base body, the connecting rod is connected into the connecting groove in a sliding mode, a side groove is formed in the side wall of the alloy base body, a locking rod is connected into the side groove in a sliding mode, and the locking rod penetrates through the alloy base body and is connected with the alloy base body in a sliding mode. The locking rod extends into the locking hole and can fix the reinforcing plate and the alloy base body together. According to the tool, rapid mounting and locking of the superhard blade are achieved through the innovative connecting mechanism, the strength is improved through firm combination of the reinforcing plate and the alloy base body, mounting and dismounting are simplified through the limiting mechanism, and stability and machining precision are improved.

Description

Technical Field

[0001] The invention relates to the technical field of polycrystalline cubic boron nitride cutting tools, in particular to a polycrystalline cubic boron nitride cutting tool for ductile iron. Background Art

[0002] The processing of metal parts cannot be separated from cutting tools, especially with the development of science and technology and the improvement of materials, the requirements for processing cutting tools are getting higher and higher.

[0003] The prior art publication number CN212329792U is a polycrystal blade with a positioning structure, comprising an alloy substrate, a positioning component for fixing a blade body is provided on the alloy substrate, a blade mounting groove is provided at the top position of the edge of the upper end face of the alloy substrate, a superhard blade is connected in the blade mounting groove, a mounting hole 2 is provided at the bottom of the blade mounting groove, a mounting hole 1 matching with the mounting hole 2 is provided on the superhard blade, a countersunk hole 1 is provided on the superhard blade and located at the upper opening of the mounting hole 1, the polycrystal blade with a positioning structure facilitates the assembly and connection of the blade body and the blade rod through the positioning component on the alloy substrate, has good stability, improves the strength of the blade body, and the positioning of the blade body and the blade rod is more accurate when installed, and the alloy substrate and the superhard blade are conveniently positioned and installed through the countersunk hole 1, the mounting bolt, the countersunk hole 2 and the reinforcement, so as to prevent the superhard blade from loosening and to facilitate the replacement of the superhard blade, which is more convenient to use.

[0004] The shortcoming of the above-mentioned prior art is that, when in use, positioning and fixing are achieved by cooperating between the positioning protrusion and the fixing groove at the connection between the shank and the tool rod, and cutting is achieved by the superhard blade. However, the superhard blade in this technical solution is fixed to the alloy matrix with only one mounting bolt and one reinforcement, and the stability between the superhard blade and the alloy matrix cannot be guaranteed. For this reason, the present application proposes a polycrystalline cubic boron nitride tool for ductile iron. Summary of the invention

[0005] The purpose of the present invention is to solve the above technical problems and to propose a polycrystalline cubic boron nitride cutter for ductile iron.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A polycrystalline cubic boron nitride tool for ductile iron comprises an alloy substrate, the alloy substrate is provided with four tool body mounting grooves, a superhard blade that can be positioned is slidably connected in the tool body mounting groove, the superhard blade is fixed in the tool body mounting groove by a connecting mechanism, a reinforcing plate that abuts against it is provided on the alloy substrate, the reinforcing plate can squeeze and limit the superhard blade, the reinforcing plate is connected to the alloy substrate by four locking mechanisms, the locking mechanism comprises a connecting rod fixed to the bottom of the reinforcing plate, the connecting rod is provided with a locking hole, the alloy substrate is provided with a connecting groove, the connecting rod is slidably connected in the connecting groove, the side wall of the alloy substrate is provided with a side groove, a locking rod is slidably connected in the side groove, the locking rod passes through the alloy substrate and is slidably connected to it, and the locking rod extends into the locking hole to fix the reinforcing plate and the alloy substrate together.

[0008] Preferably, a positioning protrusion is fixedly connected to a surface of the alloy substrate opposite to the reinforcing plate, and the two positioning protrusions are coaxially arranged.

[0009] Preferably, the connecting mechanism includes a circular groove arranged at the upper end of the superhard blade, the inner bottom of the circular groove is provided with a rectangular groove penetrating the superhard blade, the rectangular groove and the circular groove are coaxially arranged, the inner bottom of the blade mounting groove is fixedly connected with a rectangular block, the rectangular block penetrates the rectangular groove and is slidably connected thereto, and the rectangular block is provided with two locking blocks that can be reset and can slide against the inner bottom of the circular groove.

[0010] Preferably, the rectangular block is penetrated by a through slot, a positioning block is fixedly connected in the through slot, two moving blocks are slidably connected in the through slot, the locking block is fixed on the moving block, a first spring is fixedly connected to the moving block, and the other end of the first spring is fixedly connected to the positioning block.

[0011] Preferably, an upper end of the locking block away from the moving block is provided with an inclined surface, and the locking block does not abut against the inner wall of the circular groove.

[0012] Preferably, a pull block is fixedly connected to the locking rod, a second spring is fixed to the pull block, the other end of the second spring is fixedly connected to the inner wall of the side groove, and the second spring is sleeved on the outside of the locking rod.

[0013] Preferably, it also includes a limiting mechanism for limiting the pulling block, the limiting mechanism includes a short shaft rotatably connected to the inner wall of the side groove, a limiting block is fixedly connected to the short shaft, a limiting groove is provided on the pulling block, and the limiting block is slidably connected in the limiting groove.

[0014] Preferably, a damping shaft is fixedly connected to the short shaft, and the damping shaft is fixedly connected to the inner wall of the side groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The tool realizes the rapid installation and disassembly of the super-hard blade through the innovative connection mechanism design. The sliding fit between the rectangular block and the rectangular groove and the automatic resetting of the locking block under the action of the first spring ensure that the super-hard blade can be stably locked after installation, avoiding the cumbersome and inconvenient traditional installation methods. This design not only improves the installation efficiency, but also enhances the stability and durability of the tool.

[0017] 2. The introduction of the reinforcement plate and the locking mechanism design between it and the alloy matrix further improve the overall strength and stability of the tool. The sliding connection between the connecting rod and the connecting groove, and the locking action of the locking rod in the locking hole, achieve a firm combination of the reinforcement plate and the alloy matrix. This design effectively prevents the tool from loosening or deformation during use, thereby ensuring processing accuracy and safety.

[0018] 3. In order to facilitate the installation and removal of the reinforcement plate, the tool is also designed with an ingenious limiting mechanism. Through the cooperation of the short shaft, the limit block and the damping shaft, as well as the interference between the limit groove and the pull block, effective limiting of the pull block and the locking rod is achieved. This design not only simplifies the installation and removal process of the reinforcement plate, but also improves the convenience and safety of operation. At the same time, the existence of the limiting mechanism further enhances the reliability and stability of the tool, providing a strong guarantee for efficient and precise processing.

[0019] In summary, the tool of the present invention realizes quick installation and locking of the superhard blade through an innovative connection mechanism, the reinforcement plate is firmly combined with the alloy matrix to improve the strength, and the limiting mechanism simplifies installation and disassembly, thereby enhancing stability and processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a polycrystalline cubic boron nitride tool for ductile iron proposed by the present invention;

[0021] Figure 2 A bottom schematic diagram of a polycrystalline cubic boron nitride tool for ductile iron proposed by the present invention;

[0022] Figure 3 A schematic diagram of the structure of a polycrystalline cubic boron nitride tool for splitting ductile iron proposed by the present invention;

[0023] Figure 4 This is a schematic structural diagram of the alloy matrix in a polycrystalline cubic boron nitride tool for ductile iron proposed by the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a superhard blade of a polycrystalline cubic boron nitride tool for ductile iron proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the splitting of a rectangular block in a polycrystalline cubic boron nitride cutter for ductile iron proposed by the present invention;

[0026] Figure 7 The present invention is a schematic structural diagram of a polycrystalline cubic boron nitride tool middle puller block for ductile iron.

[0027] In the figure: 1 alloy substrate, 2 reinforcement plate, 3 positioning protrusion, 4 superhard blade, 5 pull block, 6 blade mounting groove, 7 connecting groove, 8 side groove, 9 connecting rod, 10 locking hole, 11 locking rod, 12 circular groove, 13 rectangular block, 14 rectangular groove, 15 through groove, 16 positioning block, 17 moving block, 18 first spring, 19 locking block, 20 inclined surface, 21 second spring, 22 limit groove, 23 damping shaft, 24 short shaft, 25 limit block. DETAILED DESCRIPTION

[0028] In the description of the present application, 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. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0030] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-Figure 7 A polycrystalline cubic boron nitride tool for ductile iron includes an alloy substrate 1, a reinforcing plate 2 abutting against the alloy substrate 1, a positioning protrusion 3 fixedly connected to the opposite side of the alloy substrate 1 and the reinforcing plate 2, two positioning protrusions 3 are coaxially arranged, and the positioning protrusion 3 is arranged so as to be connected to the tool rod.

[0033] The alloy substrate 1 is provided with four blade mounting grooves 6, in which a superhard blade 4 capable of being positioned is slidably connected, and the superhard blade 4 is fixed in the blade mounting groove 6 by a connecting mechanism, and the connecting mechanism includes a circular groove 12 arranged at the upper end of the superhard blade 4, and the inner bottom of the circular groove 12 penetrates the superhard blade 4 and is provided with a rectangular groove 14, and the rectangular groove 14 is coaxially arranged with the circular groove 12, and the inner bottom of the blade mounting groove 6 is fixedly connected with a rectangular block 13, and the rectangular block 13 penetrates the rectangular groove 14 and is slidably connected therewith, and the rectangular block 13 Two locking blocks 19 are provided on the top which can be reset and can slide against the bottom of the circular groove 12. A through groove 15 is penetrated by the rectangular block 13. A positioning block 16 is fixedly connected in the through groove 15. Two moving blocks 17 are slidably connected in the through groove 15. The locking block 19 is fixed on the moving block 17. A first spring 18 is fixedly connected to the moving block 17. The other end of the first spring 18 is fixedly connected to the positioning block 16. An inclined surface 20 is provided on the upper end of one end of the locking block 19 away from the moving block 17, and the locking block 19 does not abut against the inner wall of the circular groove 12.

[0034] Specifically, during installation, the superhard blade 4 is placed in the blade body mounting groove 6. At this time, the upper end of the rectangular block 13 is located in the rectangular groove 14, and the superhard blade 4 is at abutment against the inclined surface 20. The staff presses the superhard blade 4 downward, and the locking block 19 moves relatively under the action of pressure, that is, the locking block 19 drives the moving block 17 to slide into the through groove 15. At this time, the first spring 18 is compressed, and finally the locking block 19 is received in the through groove 15. The superhard blade 4 can be installed in the blade body mounting groove 6 by pressing. At this time, the locking block 19 is no longer limited. Under the action of the first spring 18, the moving block 17 and the locking block 19 are reset. Finally, the locking block 19 is at abutment against the inner bottom of the circular groove 12 to lock the superhard blade 4. Compared with the prior art, the installation is faster.

[0035] During disassembly, the staff presses the locking block 19 relatively, and the locking block 19 is received in the through slot 15, and the superhard blade 4 is moved upward to separate it from the rectangular block 13 and can be removed.

[0036] The reinforcement plate 2 can squeeze and limit the superhard blade 4. The reinforcement plate 2 is connected to the alloy substrate 1 through four locking mechanisms. The locking mechanism includes a connecting rod 9 fixed at the bottom of the reinforcement plate 2. The connecting rod 9 is provided with a locking hole 10. The alloy substrate 1 is provided with a connecting groove 7. The connecting rod 9 is slidably connected in the connecting groove 7. The side wall of the alloy substrate 1 is provided with a side groove 8. A locking rod 11 is slidably connected in the side groove 8. The locking rod 11 penetrates the alloy substrate 1 and is slidably connected thereto. The locking rod 11 extends into the locking hole 10 and can fix the reinforcement plate 2 and the alloy substrate 1 together. At this time, the end of the locking rod 11 does not abut against the end of the locking hole 10, and a certain space is still reserved; a pull block 5 is fixedly connected to the locking rod 11, and a second spring 21 is fixed on the pull block 5. The other end of the second spring 21 is fixedly connected to the inner wall of the side groove 8, and the second spring 21 is set on the outside of the locking rod 11.

[0037] Through the cooperation of the connecting mechanism and the reinforcing plate 2, the superhard blade 4 can be stably limited, thereby ensuring the stability of the superhard blade 4.

[0038] In order to facilitate the installation and disassembly of the reinforcement plate 2, a limiting mechanism for limiting the pulling block 5 is also included. The limiting mechanism includes a short shaft 24 rotatably connected to the inner wall of the side groove 8, and a limiting block 25 is fixedly connected to the short shaft 24. A limiting groove 22 is provided on the pulling block 5, and the limiting block 25 is slidably connected in the limiting groove 22. A damping shaft 23 is fixedly connected to the short shaft 24, and the damping shaft 23 is fixedly connected to the inner wall of the side groove 8. Since the limiting block 25 is located in the limiting groove 22, the pulling block 5 and the limiting block 25 interfere with each other, the limiting block 25 will not rotate, and the pulling block 5 is not easy to move in the axial direction, so that the connecting rod 9 is stably locked.

[0039] Specifically, during installation, the staff manually presses the pull block 5 to make the limit block 25 disengage from the limit groove 22, then rotates the limit block 25 so that it is not opposite to the pull block 5, then pulls the pull block 5 to drive the locking rod 11 to move, then rotates the limit block 25 to make it opposite to the pull block 5, releases the pull block 5, and under the action of the second spring 21, the pull block 5 and the locking rod 11 return to their original positions. At this time, the pull block 5 is against the limit block 25, so the reset of the pull block 5 is prevented. At this time, the locking rod 11 is not in the connecting groove 7, and the connecting rod 9 on the reinforcement plate 2 is installed in the connecting groove 7, and then the limit blocks 25 are rotated one by one. Under the action of the second spring 21, the locking rod 11 is completely reset. At this time, the locking rod 11 is inserted into the locking hole 10 to achieve the locking of the connecting rod 9, thereby achieving the fixation of the reinforcement plate 2; as mentioned above, in the same way, the reinforcement plate 2 can be disassembled, and the operation is simple and convenient.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A polycrystalline cubic boron nitride tool for ductile iron, comprising an alloy substrate (1), characterized in that: The alloy substrate (1) is provided with four blade mounting grooves (6), and a superhard blade (4) capable of being positioned is slidably connected in the blade mounting groove (6). The superhard blade (4) is fixed in the blade mounting groove (6) via a connecting mechanism. The alloy substrate (1) is provided with a reinforcing plate (2) abutting against it, and the reinforcing plate (2) is capable of squeezing and limiting the superhard blade (4). The reinforcing plate (2) is connected to the alloy substrate (1) via four locking mechanisms, and the locking mechanisms include a reinforcing plate (2) fixed at the bottom The reinforcing plate (2) and the alloy substrate (1) are provided with a connecting rod (9), the connecting rod (9) being provided with a locking hole (10), the alloy substrate (1) being provided with a connecting groove (7), the connecting rod (9) being slidably connected in the connecting groove (7), the side wall of the alloy substrate (1) being provided with a side groove (8), the side groove (8) being slidably connected with a locking rod (11), the locking rod (11) passing through the alloy substrate (1) and being slidably connected thereto, the locking rod (11) extending into the locking hole (10) being able to fix the reinforcing plate (2) and the alloy substrate (1) together.

2. The polycrystalline cubic boron nitride tool for ductile iron according to claim 1, characterized in that: The alloy substrate (1) and the reinforcing plate (2) are both fixedly connected with positioning protrusions (3) on their opposite sides, and the two positioning protrusions (3) are coaxially arranged.

3. The polycrystalline cubic boron nitride tool for ductile iron according to claim 1, characterized in that: The connection mechanism comprises a circular groove (12) arranged at the upper end of the superhard blade (4); the inner bottom of the circular groove (12) is provided with a rectangular groove (14) penetrating the superhard blade (4); the rectangular groove (14) and the circular groove (12) are coaxially arranged; the inner bottom of the blade mounting groove (6) is fixedly connected with a rectangular block (13); the rectangular block (13) penetrates the rectangular groove (14) and is slidably connected thereto; the rectangular block (13) is provided with two locking blocks (19) which can be reset and can slide against the inner bottom of the circular groove (12).

4. A polycrystalline cubic boron nitride tool for ductile iron according to claim 3, characterized in that: The rectangular block (13) is provided with a through slot (15), a positioning block (16) is fixedly connected in the through slot (15), two moving blocks (17) are slidably connected in the through slot (15), the locking block (19) is fixed on the moving block (17), a first spring (18) is fixedly connected to the moving block (17), and the other end of the first spring (18) is fixedly connected to the positioning block (16).

5. The polycrystalline cubic boron nitride tool for ductile iron according to claim 4, characterized in that: An inclined surface (20) is provided at the upper end of one end of the locking block (19) away from the moving block (17), and the locking block (19) does not abut against the inner wall of the circular groove (12).

6. The polycrystalline cubic boron nitride tool for ductile iron according to claim 1, characterized in that: The locking rod (11) is fixedly connected to a pull block (5), the pull block (5) is fixed to a second spring (21), the other end of the second spring (21) is fixedly connected to the inner wall of the side groove (8), and the second spring (21) is sleeved on the outside of the locking rod (11).

7. The polycrystalline cubic boron nitride tool for ductile iron according to claim 6, characterized in that: It also includes a limiting mechanism for limiting the pull block (5), the limiting mechanism including a short shaft (24) rotatably connected to the inner wall of the side groove (8), a limiting block (25) fixedly connected to the short shaft (24), a limiting groove (22) provided on the pull block (5), and the limiting block (25) slidably connected in the limiting groove (22).

8. The polycrystalline cubic boron nitride tool for ductile iron according to claim 7, characterized in that: The short shaft (24) is fixedly connected with a damping rotating shaft (23), and the damping rotating shaft (23) is fixedly connected to the inner wall of the side groove (8).

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