CBN blade chip breaker groove structure

Abstract

The utility model relates to a CBN (Cubic Boron Nitride) blade chip breaker groove structure, which belongs to the technical field of metal cutting tools and comprises a blade body, the blade body is a 80-degree rhombic cylinder and comprises a clamping hole, two welding assembling grooves, two cutting edges and two chip breaker groove bodies, and the two welding assembling grooves, the two cutting edges and the two chip breaker groove bodies are arranged in the clamping hole. The two welding assembling grooves are formed in the two ends of the top of the blade body respectively, the cutting edges are welded and bonded to the inner walls of the welding assembling grooves, the chip breaker groove bodies are formed in the cutting edges, and the cutting edges are made of CBN materials. The chip breaker has the beneficial effects that the shape design of the chip breaker body in the scheme can promote chips to curl according to a preset shape and break in time, the chip breaking rate is higher, long chips can be effectively prevented from winding a cutter, the continuous and smooth cutting process is ensured, the processing efficiency is obviously improved, and the production cost is reduced. And the downtime caused by chip cleaning, tool faults and the like is reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal cutting tool technology, and in particular to a chip breaking groove structure for CBN cutting tools. Background Technology

[0002] During machining, chips easily get tangled on the cutting tool and the workpiece, causing tool breakage and damage to the machined surface. When machining grooves with existing CBN slot inserts, due to the machining properties of the material being machined, chips are not easy to break. When machining narrow grooves, chip removal is difficult, chips accumulate in the groove, and chips entangle on the workpiece, easily scratching the machined surface. Chip cleaning is difficult, so chip treatment is even more important.

[0003] A common approach is to use an external chip breaker, installed around the tool to assist in chip breaking. However, such devices are complex in structure, cumbersome to install and debug, occupy machine tool workspace, are prone to interference with workpieces and fixtures, and have poor adaptability to different working conditions. When frequently changing workpieces or machining parameters, the device often needs to be recalibrated, which seriously affects the continuity and smoothness of machining. From the perspective of the tool itself, the chip breaker groove design on early ordinary carbide tools was simple and had poor versatility, making it difficult to directly transfer to CBN inserts.

[0004] Therefore, we propose a chip breaker groove structure for CBN cutting tools to solve the problems mentioned above. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the main objective of this utility model is to provide a chip breaking groove structure for CBN cutting tools.

[0006] The technical solution of this utility model is as follows: a CBN cutting tool chip breaker structure includes a cutting tool body, which is an 80-degree rhomboid prism. The cutting tool body includes a clamping hole, a welding assembly groove, a cutting edge, and a chip breaker body. Two welding assembly grooves, two cutting edges, and two chip breaker bodies are provided. The two welding assembly grooves are respectively opened at both ends of the top of the cutting tool body. The cutting edge is welded and bonded to the inner wall of the welding assembly groove. The chip breaker body is opened inside the cutting edge. The cutting edge is made of CBN material.

[0007] By adopting the above technical solution and setting the cutting edge of CBN material, the temperature of the cutting area can be effectively reduced due to its high thermal conductivity, thus reducing wear caused by high temperature, especially showing excellent performance in high-speed cutting.

[0008] In a preferred embodiment, a clamping hole is provided at the center of the blade body, and the clamping hole is arranged in a through manner.

[0009] By adopting the above technical solution and setting the clamping hole, the correct installation and fixation of the blade body on the machine tool can be ensured, thereby guaranteeing machining accuracy and stability.

[0010] In a preferred embodiment, the thickness of the blade body is 4.76 ± 0.05 mm, and the thickness of the cutting edge is 1.6 mm.

[0011] By adopting the above technical solution and setting the cutting edge, the purpose of cutting metal workpieces can be achieved.

[0012] In a preferred embodiment, the chip breaker body has a V-shaped structure, and the distance between the chip breaker body and the wall edge of the cutting edge is 0.16 mm.

[0013] By adopting the above technical solution and connecting them by welding, the stability of the cutting edge during the cutting process can be increased.

[0014] In a preferred embodiment, the side of the chip breaker groove body away from the clamping hole is rounded, and the radius of the rounded corner of the chip breaker groove body is 0.8 mm.

[0015] By adopting the above technical solution, the rounded corner design of the chip breaker groove body can reduce the curling radius of the chip, making it easier for the chip to break during the deformation process.

[0016] In a preferred embodiment, the outer edge of the blade body is provided with a bevel, the width of the bevel is 0.8 mm, and the side length of the blade body is 12.7 ± 0.025 mm.

[0017] By adopting the above technical solution and setting the inclined surface, the friction of the cutting tool body can be effectively reduced, the tangential force and vibration during the cutting process can be reduced, thereby improving the cutting efficiency.

[0018] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0019] 1. In this utility model, under various preset cutting conditions, the chip breaker groove body shape design of this solution can promote the chips to curl in a predetermined shape and break in time, resulting in a high chip breaking rate. This effectively avoids long chips from wrapping around the tool, ensuring a continuous and smooth cutting process, significantly improving processing efficiency, reducing downtime caused by chip cleaning, tool failure, etc., and the reasonable chip breaker groove body structure helps to evenly distribute the cutting force, reduce the concentrated load at the cutting edge, reduce the tool wear rate, and significantly reduce the cost and time loss caused by frequent tool body replacement, improving machine tool utilization. Furthermore, the cutting edge setting of CBN material, due to its high thermal conductivity, can effectively reduce the temperature of the cutting area and reduce wear caused by high temperature, especially performing well in high-speed cutting. CBN's hardness is second only to diamond, which allows it to maintain high cutting efficiency and sharpness during grinding.

[0020] 2. In this utility model, the rounded corner design of the chip breaking groove body can reduce the curling radius of the chip, making it easier for the chip to break during the deformation process. In addition, the setting of the clamping hole can ensure the correct installation and fixation of the blade body on the machine tool, thereby ensuring machining accuracy and stability. Attached Figure Description

[0021] Figure 1 A perspective view of a CBN cutting tool chip breaker groove structure provided by this utility model;

[0022] Figure 2 A top view of a CBN cutting tool chip breaker groove structure provided by this utility model;

[0023] Figure 3 This utility model provides a partial enlarged view of the chip breaker groove body of a CBN cutting tool chip breaker groove structure;

[0024] Figure 4 The present invention provides a side view of a CBN cutting tool chip breaking groove structure.

[0025] Illustration: 1. Blade body; 101. Clamping hole; 102. Welding assembly groove; 103. Cutting edge; 104. Chip breaker groove body. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] Reference Figure 1-4A CBN cutting tool chip breaker structure includes a cutting tool body 1, which is an 80-degree rhomboid prism. The cutting tool body 1 includes a clamping hole 101, a welding assembly groove 102, a cutting edge 103, and a chip breaker body 104. Two welding assembly grooves 102, two cutting edges 103, and two chip breaker bodies 104 are provided. The two welding assembly grooves 102 are respectively located at both ends of the top of the cutting tool body 1. The cutting edge 103 is welded to the inner wall of the welding assembly groove 102. The chip breaker body 104 is located inside the cutting edge 103. The cutting edge 103 is made of CBN material. Under various preset cutting conditions, the shape design of the chip breaker body 104 in this solution can promote the chips to curl in a predetermined shape and break in time, resulting in a high chip breaking rate and effectively preventing long chips from tangling. The cutting tool is surrounded to ensure a continuous and smooth cutting process, significantly improving machining efficiency and reducing downtime caused by chip cleaning and tool failure. The reasonable chip breaker body 104 structure helps to evenly distribute cutting force, reduce concentrated load at the cutting edge 103, and reduce tool wear rate. Compared with traditional similar products, the tool body 1 has a longer service life, greatly reducing the cost and time loss caused by frequent replacement of the tool body 1, and improving machine tool utilization. Furthermore, the cutting edge 103 made of CBN material has a high thermal conductivity, which can effectively reduce the temperature of the cutting area and reduce wear caused by high temperature. It performs particularly well in high-speed cutting. CBN's hardness is second only to diamond, which allows it to maintain high cutting efficiency and sharpness during grinding.

[0028] Specifically, a clamping hole 101 is provided at the center of the inner part of the insert body 1. The clamping hole 101 is through-hole. The thickness of the insert body 1 is 4.76±0.05 mm. The clamping hole 101 ensures the correct installation and fixation of the insert body 1 on the machine tool, thereby ensuring machining accuracy and stability. The thickness of the cutting edge 103 is 1.6 mm. The chip breaker groove body 104 has a V-shaped structure. The distance between the chip breaker groove body 104 and the edge of the cutting edge 103 is 0.16 mm. The cutting edge 103 and the insert body 1 are connected by welding, which can increase the stability of the cutting edge 103 during the cutting process.

[0029] Specifically, the chip breaker body 104 has a rounded corner on the side away from the clamping hole 101. The rounded corner design of the chip breaker body 104 can reduce the curling radius of the chip, making it easier for the chip to break during deformation. The rounded corner radius of the chip breaker body 104 is 0.8 mm. The outer edge of the insert body 1 is set with a bevel, which can effectively reduce the friction of the insert body 1, reduce the tangential force and vibration during the cutting process, thereby improving the cutting efficiency. The width of the bevel is 0.8 mm, and the side length of the insert body 1 is 12.7 ± 0.025 mm.

[0030] Working Principle: First, the operator can install the chip breaker on the machine tool using the clamping hole 101. The rounded corner design of the chip breaker body 104 reduces the curling radius of the chips, making them easier to break during deformation. The CBN material cutting edge 103, due to its high thermal conductivity, effectively reduces the temperature of the cutting area, minimizing wear caused by high temperatures, especially during high-speed cutting. CBN's hardness is second only to diamond, allowing it to maintain high cutting efficiency and sharpness during grinding. Under various preset cutting conditions, the shape design of the chip breaker body 104 in this solution promotes the chips to curl and break in a predetermined shape, resulting in a high chip breaking rate. This effectively prevents long chips from entangled in the tool, ensuring a continuous and smooth cutting process, significantly improving processing efficiency, and reducing downtime caused by chip cleaning and tool failure. Furthermore, the reasonable structure of the chip breaker body 104 helps to evenly distribute cutting forces, reducing concentrated loads at the cutting edge 103 and lowering the tool wear rate. Actual testing shows that the CBN chip breaker body 104 equipped with this solution... Compared to traditional similar products, the blade body 1 has a 20% longer lifespan, which greatly reduces the cost and time loss caused by frequent replacement of the cutting edge 103 and improves the utilization rate of the machine tool.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A CBN insert chip-breaker structure comprising an insert body (1) characterised in that: The blade body (1) is an 80-degree rhomboid prism. The blade body (1) includes a clamping hole (101), a welding assembly groove (102), a cutting edge (103), and a chip breaker body (104). There are two welding assembly grooves (102), two cutting edges (103), and two chip breaker bodies (104). The two welding assembly grooves (102) are respectively opened at both ends of the top of the blade body (1). The cutting edge (103) is welded and bonded to the inner wall of the welding assembly groove (102). The chip breaker body (104) is opened inside the cutting edge (103). The cutting edge (103) is made of CBN material.

2. The CBN insert chip-breaker structure according to claim 1, characterized in that: The blade body (1) has a clamping hole (101) at its center, and the clamping hole (101) is through.

3. The CBN insert chip-breaker structure of claim 1, wherein: The thickness of the blade body (1) is 4.76 ± 0.05 mm, and the thickness of the cutting edge (103) is 1.6 mm.

4. The CBN insert chip-breaker structure of claim 1 wherein: The chip breaker groove body (104) has a V-shaped structure, and the distance between the chip breaker groove body (104) and the wall edge of the cutting edge (103) is 0.16 mm.

5. The CBN insert chip-breaker construction according to claim 1, characterized in that: The chip breaker body (104) has a rounded corner on the side away from the clamping hole (101), and the radius of the rounded corner of the chip breaker body (104) is 0.8 mm.

6. The CBN insert chip-breaker construction according to claim 1, characterized in that: The outer edge of the blade body (1) is provided with a bevel, the width of the bevel is 0.8 mm, and the side length of the blade body (1) is 12.7 ± 0.025 mm.

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