Polygonal cutting blade with sleeking effect

Abstract

The polygonal cutting blade with the sleeking effect is polygonal and comprises a plurality of main cutting edges and a plurality of auxiliary cutting edges, an intersection point is formed by an included angle between the main cutting edge and the auxiliary cutting edge, and the intersection point is in an arc shape; sleeking cutting edges are arranged on the intersection point and the main cutting edge; the cutting blade is further provided with a positioning face and an installation positioning hole which are used for installing the positioning blade. The polygonal cutting blade with the sleeking effect is reasonable in design and provided with more available cutting edges, the main cutting edge is used for finish machining, the auxiliary cutting edge is used for chamfering, and the special sleeking cutting edge is further designed; more positioning edges are provided, so that the positioning rigidity is enhanced; and the ultra-particle tungsten carbide hard alloy material and the coating are adopted, so that the method is suitable for various high-precision, long-service-life and high-stability application occasions, and the application prospect is wide.

Description

Technical Field

[0001] This utility model relates to the field of cutting and machining technology, specifically to a polygonal cutting blade with a polishing effect. Background Technology

[0002] In modern manufacturing, the requirements for machining precision and surface quality of parts are constantly increasing with technological advancements and rising industrial demands. As the most fundamental and crucial machining method in mechanical manufacturing, cutting is directly influenced by the performance of its core tool—the cutting insert—which affects machining quality, efficiency, and cost.

[0003] Existing cutting inserts have the following limitations:

[0004] 1. Limited number and function of cutting edges: Many traditional cutting inserts have a limited number of usable cutting edges, requiring frequent insert changes or adjustments to the cutting position during use, which affects machining efficiency. Moreover, the cutting edge functions of these inserts are relatively simple, usually only suitable for a single machining operation, such as roughing or finishing, making it difficult to meet multiple machining needs simultaneously.

[0005] 2. Insufficient positioning rigidity: During the cutting process, the positioning rigidity of the cutting tool directly affects the machining accuracy and stability. Some existing cutting tools have too few positioning edges and the positioning method is not reliable enough. They are prone to displacement and vibration under the action of cutting forces, resulting in increased machining errors and decreased surface quality.

[0006] 3. Inadequate finishing edge design: The finishing edge is a key component for improving the quality of machined surfaces, but existing cutting inserts have several design flaws in their finishing edges. Some finishing edges have the same width as the main cutting edge, resulting in high finishing resistance during machining, which can easily cause tool vibration and affect the finishing effect. Other finishing edges have unreasonable shapes and dimensions, failing to effectively reduce the roughness of the machined surface.

[0007] 4. Inadequate material properties: The material of the cutting insert plays a decisive role in its performance. Traditional cemented carbide materials have certain limitations in terms of hardness, wear resistance, and toughness, making it difficult to meet the requirements of high-speed, high-precision machining.

[0008] Therefore, there is an urgent need to develop a cutting insert that can simultaneously meet the requirements of high efficiency, long life, high surface roughness, and high precision. Utility Model Content

[0009] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a polygonal cutting blade with a finishing effect. It has a reasonable design, more usable cutting edges, a main cutting edge for finishing, a secondary cutting edge for chamfering, and a special finishing cutting edge. It also has more positioning edges, which enhances positioning rigidity and has a wide range of application prospects.

[0010] Technical solution: A polygonal cutting blade with a polishing effect, wherein the cutting blade is polygonal and includes several main cutting edges and several secondary cutting edges; the main cutting edges and secondary cutting edges form an intersection point with an angle, and the intersection point is arc-shaped; polishing cutting edges are provided on the intersection point and the main cutting edges; the cutting blade is also provided with a positioning surface and a mounting positioning hole for mounting positioning blades.

[0011] In actual parts machining, many workpieces require both high-precision surface finish and specific chamfering treatment. The cutting insert described in this invention has more usable cutting edges with clearly defined functions: the main cutting edge is used for finishing, the secondary cutting edge is used for chamfering, and a special finishing cutting edge is also designed. This allows for the completion of finishing cutting and chamfering processes in a single machining operation, greatly improving machining efficiency, reducing errors caused by multiple machining steps, and ensuring the machining accuracy of the parts.

[0012] Furthermore, the aforementioned polygonal cutting insert with a polishing effect is hexagonal; the cutting insert includes three main cutting edges, namely main cutting edge one, main cutting edge two, and main cutting edge three; the cutting insert also includes three secondary cutting edges, namely secondary cutting edge one, secondary cutting edge two, and secondary cutting edge three; the angle between main cutting edge one and secondary cutting edge one forms intersection point one, the angle between main cutting edge two and secondary cutting edge two forms intersection point two, and the angle between main cutting edge three and secondary cutting edge three forms intersection point three; intersection points one, two, and three are all arc-shaped; intersection point one and main cutting edge two form intersection point three. A finishing cutting edge is provided on the first cutting edge, a finishing cutting edge is provided on the second intersection point and the second main cutting edge, and a finishing cutting edge is provided on the third intersection point and the third main cutting edge; the cutting edge of the cutting blade is provided with two positioning surfaces, namely positioning surface one and positioning surface two; the cutting blade is provided with a central through mounting positioning hole, which includes a mounting positioning hole one located at the top and a mounting positioning hole two located at the bottom. The diameter of the mounting positioning hole one is different from that of the mounting positioning hole two, and the mounting positioning hole one and the mounting positioning hole two are connected by an arc transition.

[0013] The hexagonal design provides multiple locating surfaces for locking and positioning the cutting insert, increasing its rigidity during machining. In cutting, the locating rigidity of the insert directly affects machining accuracy and tool life. If the insert is not securely positioned, it is prone to displacement and vibration under cutting forces, leading to decreased machining accuracy and accelerated tool wear.

[0014] The multi-positioning surface design of the cutting insert can effectively distribute the cutting force to multiple positioning surfaces, improving the stability and rigidity of the insert and ensuring machining accuracy and tool life.

[0015] Furthermore, the aforementioned polygonal cutting blade with a polishing effect has an inscribed circle diameter ranging from 4 to 17.6 mm.

[0016] Different sizes of inscribed circle diameters can be used to meet different processing scenarios and equipment requirements.

[0017] Furthermore, in the aforementioned polygonal cutting blade with a polishing effect, the arc size of the intersection point ranges from 0.1 to 1.2 mm.

[0018] The proper setting of the arc diameter at the intersection point allows the cutting insert to adapt to different machining requirements and working conditions.

[0019] Furthermore, in the aforementioned polygonal cutting blade with a smoothing effect, the angle between the main cutting edge and the secondary cutting edge is either α = 84° / β = 156° or α = 95° / β = 145°.

[0020] The included angle between the primary and secondary cutting edges is limited, and different included angles will affect the cutting performance and applicable range of the cutting insert.

[0021] Furthermore, the aforementioned polygonal cutting blade with a polishing effect has a thickness ranging from 1.2 to 6 mm.

[0022] The thickness range of the cutting insert is limited, and different insert thicknesses will affect its strength and rigidity.

[0023] Furthermore, in the aforementioned polygonal cutting insert with a polishing effect, the angle between the first positioning surface and the first main cutting edge is in the range of 7 to 11°; the angle between the second positioning surface and the second main cutting edge is in the range of 20 to 35°; and the width of both the first and second positioning surfaces is in the range of 0.6 to 3 mm.

[0024] The angle between the locating surface and the main cutting edge is defined, as these angles affect the accuracy and stability of the insert's mounting and positioning. A suitable angle ensures that the insert can accurately perform cutting operations after mounting, improving machining precision and efficiency.

[0025] The width range of the positioning surface has been defined, as the width of the positioning surface will affect the contact area and positioning accuracy when the blade is installed.

[0026] Furthermore, the above-mentioned cutting blade with a polygon shape and a finishing effect has the following dimensional ranges for the mounting positioning holes: the diameter of the first mounting positioning hole ranges from 2.5 to 8 mm, and the diameter of the second mounting positioning hole ranges from 2 to 6 mm; the depth of the first mounting positioning hole ranges from 1 to 3 mm, and the size of the arc between the first mounting positioning hole and the second mounting positioning hole ranges from 0.5 to 2.5 mm.

[0027] The dimensions of the mounting positioning holes are defined, and these dimensions directly relate to the fitting accuracy between the blade and the mounting device.

[0028] Furthermore, the above-mentioned cutting blade with a polygon shape and a finishing effect has the following dimensional ranges for the finishing cutting edge: the width of the finishing cutting edge ranges from 1 to 5 mm, and the size of the arc of the finishing cutting edge ranges from 100 to 1000 mm.

[0029] The main cutting edge has a design of a large arc finishing cutting edge, and the surface roughness after machining can reach <Ra0.8. The large arc design results in low finishing resistance, enabling smoother cutting during the machining process, reducing the fluctuations of cutting vibration and cutting force, thereby further improving the quality of the machined surface and being suitable for various application scenarios.

[0030] Furthermore, the above-mentioned cutting blade with a polygon shape and a finishing effect is made of ultra-fine grain tungsten carbide hard alloy, and a coating is provided on the cutting blade.

[0031] The cutting blade is made of ultra-fine grain tungsten carbide hard alloy with a particle size of <0.2 microns, having the properties of both high wear resistance and high strength. In cutting machining, the wear resistance and strength of the cutting tool are key factors affecting the tool life. The fine particle structure of ultra-fine grain tungsten carbide hard alloy makes the tool have higher hardness and wear resistance, enabling it to maintain the sharpness of the cutting edge during long-term cutting and reducing tool wear. At the same time, this material also has relatively high strength, being able to withstand large cutting forces and not easily prone to chipping and breakage.

[0032] Preferably, the coating is a PVD-TiAlN+TiSiN+AlCrN coating with high aluminum, high silicon, and high chromium, having excellent surface roughness and wear resistance.

[0033] The coating is one of the important means to improve the tool performance. The present utility model adopts this composite coating to form a hard and smooth protective film on the tool surface, effectively reducing the friction coefficient during the cutting process, reducing the adhesion and wear between the tool and the workpiece. At the same time, the coating also has good oxidation resistance and heat resistance, being able to maintain stable performance in a cutting environment of high temperature and high pressure.

[0034] The beneficial effects of the present utility model are as follows: The cutting blade with a trimming effect of the polygon described in the present utility model is reasonably designed, has more available cutting edges, and the functions of each cutting edge are clearly defined. The main cutting edge is used for finishing, the secondary cutting edge is used for chamfering, and a special trimming cutting edge is also designed, greatly improving the processing efficiency. The polygon design has multiple positioning surfaces for locking and positioning, increasing the rigidity. The design of the large arc trimming cutting edge on the main cutting edge enables the surface roughness after processing to reach <Ra0.8. The large arc design results in small trimming resistance and is suitable for use in various application scenarios. The cutting blade is made of ultra-fine grain tungsten carbide with a grain size of <0.2 microns, having the properties of high wear resistance and high strength, and is suitable for various application occasions with high precision, high service life, and high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a structural schematic diagram of the cutting blade with a trimming effect of the polygon described in the present utility model Figure 1 ;

[0036] Figure 2 is a structural schematic diagram of the cutting blade with a trimming effect of the polygon described in the present utility model Figure 2 ;

[0037] Figure 3 is a top view of the cutting blade with a trimming effect of the polygon described in the present utility model;

[0038] Figure 4 is a side view of the cutting blade with a trimming effect of the polygon described in the present utility model;

[0039] Figure 5 is a dimension schematic diagram of the cutting blade with a trimming effect of the polygon described in the present utility model Figure 1 ;

[0040] Figure 6 is a dimension schematic diagram of the cutting blade with a trimming effect of the polygon described in the present utility model Figure 2 ;

[0041] Figure 7 is a dimension schematic diagram of the cutting blade with a trimming effect of the polygon described in the present utility model Figure 3 ;

[0042] Figure 8 is a dimension schematic diagram of the cutting blade with a trimming effect of the polygon described in the present utility model Figure 4 ;

[0043] In the diagram: Cutting insert 1, main cutting edge 11, main cutting edge one 111, main cutting edge two 112, main cutting edge three 113, secondary cutting edge 12, secondary cutting edge one 121, secondary cutting edge two 122, secondary cutting edge three 123, intersection 13, intersection one 131, intersection two 132, intersection three 133, finishing cutting edge 14, finishing cutting edge one 141, finishing cutting edge two 142, finishing cutting edge three 143, locating surface 15, locating surface one 151, locating surface two 152, mounting locating hole 16, mounting locating hole 161. Mounting positioning hole 2; 162. Inscribed circle diameter IC of the cutting insert; arc R of the intersection point; angle α / β between the main cutting edge and the secondary cutting edge; thickness s of the cutting insert; angle γ between the locating surface 1 and the main cutting edge 1; angle δ between the locating surface 2 and the main cutting edge 2; width s1 of the locating surface; diameter d1 of mounting positioning hole 1; diameter d2 of mounting positioning hole 2; depth ds of mounting positioning hole 1; arc dr of the mounting positioning hole; width WL of the finishing cutting edge; arc WR of the finishing cutting edge. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1 , 2 Examples 1, 2, 3, 4, 5, 6, 7, 8 and Examples 1 and 2 further illustrate this utility model.

[0045] Example 1

[0046] like Figure 1 , 2 As shown in Figures 3 and 4, the polygonal cutting insert 1 with a finishing effect described in this utility model is hexagonal, comprising three main cutting edges 11 and three secondary cutting edges 12, namely main cutting edge one 111, main cutting edge two 112, and main cutting edge three 113, and secondary cutting edges one 121, secondary cutting edge two 122, and secondary cutting edge three 123. The main and secondary cutting edges of the cutting insert 1 have a clear division of labor, which improves machining efficiency and ensures the machining accuracy of the parts.

[0047] Among them, the angle between the main cutting edge 111 and the secondary cutting edge 121 forms an intersection point 131, the angle between the main cutting edge 212 and the secondary cutting edge 2122 forms an intersection point 132, and the angle between the main cutting edge 313 and the secondary cutting edge 3123 forms an intersection point 133. All three intersection points 13 are arc-shaped.

[0048] Furthermore, at the intersection 13 and the main cutting edge 11, there are finishing cutting edges 14, namely finishing cutting edge one 141 and finishing cutting edge two 142, which are used for finishing cutting.

[0049] The cutting insert 1 has two locating surfaces 15 on each cutting edge, namely locating surface one 151 and locating surface two 152, for mounting the locating insert. The multi-locating surface design can effectively distribute the cutting force to multiple locating surfaces, improve the stability and rigidity of the insert, and ensure machining accuracy and tool life.

[0050] Furthermore, the cutting blade 1 is provided with a centrally penetrating mounting and positioning hole 15. The mounting and positioning hole 16 includes a first mounting and positioning hole 161 located at the upper part and a second mounting and positioning hole 162 located at the lower part. The diameter of the first mounting and positioning hole 161 is different from that of the second mounting and positioning hole 162, and the first mounting and positioning hole 161 and the second mounting and positioning hole 162 are connected by an arc transition.

[0051] Example 2

[0052] Based on the structural foundation of Embodiment 1 and above, such as Figure 1 , 5 As shown in 6, 7, and 8.

[0053] The polygonal cutting blade with a smoothing effect described in this utility model has the following parameter design:

[0054] 1. The inscribed circle diameter IC of the cutting insert is in the range of: IC = φ4-φ17.6mm.

[0055] 2. The radius R of the arc at the intersection of the main cutting edge 11 (main cutting edge 111, main cutting edge 112, main cutting edge 3 113) and the secondary cutting edge 12 (secondary cutting edge 121, secondary cutting edge 2 122, secondary cutting edge 3 123) is R = 0.1-1.2 mm.

[0056] 3. The angle α / β between the main cutting edge and the secondary cutting edge can be either α=84° / β=156° or α=95° / β=145°.

[0057] 4. The thickness of the cutting insert, s, ranges from 1.2 to 6 mm.

[0058] 5. The angle γ between the positioning surface one and the main cutting edge one is in the range of γ = 7-11°.

[0059] 6. The angle δ between the positioning surface 2 and the main cutting edge 2 is in the range of 20-35°.

[0060] 7. The width s1 of the positioning surface has a range of 0.6-3mm.

[0061] 8. The diameter d1 of the mounting positioning hole 1 is within the range of d1 = 2.5-8mm.

[0062] 9. The diameter d2 of the second mounting positioning hole is within the range of d2 = 2-6mm.

[0063] 10. The depth ds of the mounting positioning hole 1 is within the range of ds = 1-3mm.

[0064] 11. The arc length dr of the mounting positioning hole: dr = 0.5-2.5mm.

[0065] 12. Width WL of the finishing cutting edge: WL = 1-5mm.

[0066] 13. Finishing the arc radius WR of the cutting edge: WR=100-1000mm.

[0067] The proper setting of these parameters enables the cutting insert 1 to adapt to different machining requirements and working conditions.

[0068] Furthermore, the cutting blade 1 is made of ultrafine tungsten carbide cemented carbide with a particle size of <0.2 micrometers, which has both high wear resistance and high strength.

[0069] Furthermore, the cutting blade 1 is coated. The coating is a high-aluminum, high-silicon, and high-chromium PVD-TiAlN+TiSiN+AlCrN coating, which has excellent surface roughness and wear resistance.

[0070] In summary, the polygonal cutting blade with a smoothing effect described in this utility model solves the problems of coil thickness and charging efficiency, insufficient adaptability of magnetic shielding materials to complex contours, limited thermal management performance, and low space utilization in existing polygonal cutting blades with a smoothing effect by using a double copper wire parallel winding single-layer structure design and the synergistic application of flexible nanocrystalline magnetic shielding material.

[0071] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A polygonal cutting insert having a finishing effect, characterized in that, The cutting blade (1) is polygonal, including several main cutting edges (11) and several secondary cutting edges (12); the main cutting edges (11) and the secondary cutting edges (12) form an intersection point (13) with an angle between them, and the intersection point (13) is an arc shape; The intersection (13) and the main cutting edge (11) are provided with a finishing cutting edge (14). The cutting blade (1) is also provided with a positioning surface (15) and a mounting positioning hole (16) for mounting the positioning blade; The cutting blade (1) has two positioning surfaces (15), namely positioning surface one (151) and positioning surface two (152); the angle between the positioning surface one (151) and the main cutting edge one (111) is 7~11°; the angle between the positioning surface two (152) and the main cutting edge two (112) is 20~35°.

2. The polygonal cutting insert with a facet polishing effect according to claim 1, wherein, The cutting insert (1) is hexagonal; the cutting insert (1) includes three main cutting edges (11), namely main cutting edge one (111), main cutting edge two (112), and main cutting edge three (113); the cutting insert (1) also includes three secondary cutting edges (12), namely secondary cutting edge one (121), secondary cutting edge two (122), and secondary cutting edge three (123); the angle between the main cutting edge one (111) and the secondary cutting edge one (121) forms intersection point one (131), the angle between the main cutting edge two (112) and the secondary cutting edge two (122) forms intersection point two (132), the angle between the main cutting edge three (113) and the secondary cutting edge three (123) forms intersection point three (133), and the angle between intersection point one (131), intersection point two (132), and intersection point three (133) forms intersection point three (133). All are arc-shaped; a finishing cutting edge 1 (141) is provided on the intersection 1 (131) and the main cutting edge 1 (111), a finishing cutting edge 2 (142) is provided on the intersection 2 (132) and the main cutting edge 2 (112), and a finishing cutting edge 3 (143) is provided on the intersection 3 (133) and the main cutting edge 3 (113); the cutting blade (1) is provided with a central through mounting positioning hole (16), the mounting positioning hole (16) includes a mounting positioning hole 1 (161) located at the upper part and a mounting positioning hole 2 (162) located at the lower part, the diameter of the mounting positioning hole 1 (161) is different from the diameter of the mounting positioning hole 2 (162), and the mounting positioning hole 1 (161) and the mounting positioning hole 2 (162) are connected by an arc transition.

3. The polygonal cutting insert having a finishing effect according to any one of claims 1 or 2, wherein, The inscribed circle diameter of the cutting blade (1) ranges from 4 to 17.6 mm.

4. The polygonal cutting insert having a finishing effect according to any one of claims 1 or 2, wherein, The arc dimension of the intersection point (13) ranges from 0.1 to 1.2 mm.

5. The polygonal cutting insert having a finishing effect according to any one of claims 1 or 2, wherein, The angles between the main cutting edge (11) and the secondary cutting edge (12) are α = 84° / β = 156° and α = 95° / β = 145°, respectively.

6. The polygonal cutting insert having a finishing effect according to any one of claims 1 or 2, wherein, The thickness of the cutting blade (1) ranges from 1.2 to 6 mm.

7. The polygonal cutting insert with a finishing effect according to claim 2, wherein The width of both positioning surface one (151) and positioning surface two (152) is 0.6 ~ 3 mm.

8. The polygonal cutting insert with a finishing effect according to claim 2, wherein, The diameter of the first mounting positioning hole (161) ranges from 2.5 to 8 mm, and the diameter of the second mounting positioning hole (162) ranges from 2 to 6 mm; the depth of the first mounting positioning hole (161) ranges from 1 to 3 mm, and the arc between the first mounting positioning hole (161) and the second mounting positioning hole (162) ranges from 0.5 to 2.5 mm.

9. The polygonal cutting insert having a finishing effect according to any one of claims 1 or 2, wherein, The width of the finishing cutting edge (14) ranges from 1 to 5 mm, and the arc size of the finishing cutting edge (14) ranges from 100 to 1000 mm.

10. The polygonal cutting insert with a finishing effect according to claim 1, wherein, The cutting blade is made of ultrafine tungsten carbide cemented carbide and has a coating.

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