T-shaped knife

Abstract

The utility model discloses a T-shaped cutter. The T-shaped cutter comprises a cutter handle, a cutter neck and a cutting part, the cutter neck is arranged at one end of the cutter handle; the cutting part is arranged at the end, away from the cutter handle, of the cutter neck, a plurality of circumferential blades are spirally wound around the periphery of the cutting part, a plurality of front-end blades are arranged at the end, away from the cutter neck, of the cutting part and connected with the circumferential blades one by one, arc blades are connected between the front-end blades and the circumferential blades, and transition blades are connected between the circumferential blades and the arc blades in a transition mode. According to the T-shaped cutter, the radial stress of the cutter can be reduced, transverse vibration of the cutter is reduced, vibration marks are reduced, the surface machining quality of a workpiece is improved, and the T-shaped cutter has the long service life.

Description

Technical Field

[0001] This application relates to the field of milling machining technology, and in particular to a T-shaped tool. Background Technology

[0002] In related technologies, the use of solid carbide cutting tools for finishing in the milling process generally suffers from problems such as short tool life, easy surface roughness, and low production efficiency. As market demands for product appearance become increasingly stringent, the requirements for burr-free and vibration-free finishes are becoming widespread. Therefore, how to reduce vibration and improve the surface finish of products machined with T-cutting tools is a problem that needs to be solved. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a T-shaped cutter that can reduce the radial force on the cutter, reduce the generation of transverse vibration of the cutter, reduce chatter marks, improve the surface finish of the workpiece, and has a longer service life.

[0004] According to an embodiment of the present invention, a T-shaped knife includes: a handle, a neck, and a cutting part; the neck is located at one end of the handle; the cutting part is located at the end of the neck away from the handle, and a plurality of peripheral cutting edges are spirally wound around the outer periphery of the cutting part. A plurality of front cutting edges are located at the end of the cutting part away from the neck, and the front cutting edges are connected to the peripheral cutting edges one by one. A circular arc cutting edge connects the front cutting edges and the peripheral cutting edges, and a transition cutting edge connects the peripheral cutting edges and the circular arc cutting edges.

[0005] The T-shaped cutter according to the embodiments of this utility model has at least the following beneficial effects: This T-shaped cutter includes a shank, a neck, and a cutting section. The cutting section is located at the end of the neck away from the shank, and a peripheral cutting edge is spirally wound around its outer circumference. A front cutting edge, connected to the peripheral cutting edge, is also provided at the end of the cutting section away from the neck. An arc-shaped cutting edge connects the peripheral cutting edge and the front cutting edge. The arc-shaped cutting edge reduces the radial force on the cutter during cutting and increases the axial force, thereby reducing the generation of cutter vibration, which in turn reduces the generation of burrs and chatter marks, improving the surface finish of the product. Furthermore, a transition cutting edge connects the peripheral cutting edge and the arc-shaped cutting edge, reducing the risk of tool breakage and increasing service life. Therefore, the T-shaped cutter of this application can reduce the radial force on the cutter, reduce the generation of lateral vibration, reduce chatter marks, improve the surface finish of the workpiece, and has a long service life.

[0006] According to some embodiments of the present invention, the front blade is provided with a first blade inclination angle, and the first blade inclination angle is a positive value.

[0007] According to some embodiments of this utility model, the cutting part is provided with a rear end blade near the neck, the rear end blade is connected to the peripheral blade, and the rear end blade is provided with a second blade inclination angle, which is also a positive value.

[0008] According to some embodiments of this utility model, the first blade inclination angle is 6° and the second blade inclination angle is 1°.

[0009] According to some embodiments of the present invention, the center of the end of the cutting part away from the blade neck is further recessed inward relative to the front cutting edge.

[0010] According to some embodiments of this utility model, the end of the front edge away from the arc edge is provided with a chamfer.

[0011] According to some embodiments of this utility model, the axial rear angle of the arc-shaped blade is 8°, and the radial rear angle of the arc-shaped blade is 4°.

[0012] According to some embodiments of the present invention, the front angle of the circumferential blade is 4°, and the circumferential blade is provided with a first rear angle surface and a second rear angle surface arranged in sequence to avoid gaps. The first rear angle of the circumferential blade is 4°, and the second rear angle of the circumferential blade is 16°.

[0013] According to some embodiments of this utility model, the core diameter of the cutting part is 73% of the cutting diameter, and there are 10 peripheral cutting edges and 10 end cutting edges respectively.

[0014] According to some embodiments of this utility model, the helix angle of the peripheral blade is 35°.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the T-shaped blade of this utility model;

[0018] Figure 2 for Figure 1 A structural schematic diagram of the T-shaped blade from another perspective;

[0019] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0020] Figure 4 for Figure 1 The diagram shows the structural structure of the cutting end of the T-shaped cutter.

[0021] Figure label:

[0022] Handle 100; Neck 200; Cutting section 300; Peripheral edge 310; Front edge 320; Arc edge 330; Transition edge 340; Rear edge 350; Chamfer 360. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0025] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0027] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The following is for reference. Figures 1 to 4 The T-shaped knife is described in the embodiment of this utility model.

[0029] like Figures 1 to 3As shown, the T-shaped knife according to an embodiment of the present invention includes: a handle 100, a neck 200, and a cutting part 300; the neck 200 is disposed at one end of the handle 100; the cutting part 300 is disposed at the end of the neck 200 away from the handle 100, a plurality of peripheral cutting edges 310 are spirally wound around the outer periphery of the cutting part 300, a plurality of front cutting edges 320 are disposed at the end of the cutting part 300 away from the neck 200, the front cutting edges 320 are connected to the peripheral cutting edges 310 one by one, and an arc cutting edge 330 is connected between the front cutting edges 320 and the peripheral cutting edges 310, and a transition cutting edge 340 is transitionally connected between the peripheral cutting edges 310 and the arc cutting edge 330.

[0030] Understandably, this T-shaped cutter includes a shank 100, a neck 200, and a cutting section 300. The cutting section 300 is located at the end of the neck 200 away from the shank 100, and a peripheral cutting edge 310 is spirally wound around its outer circumference. At the end of the cutting section 300 away from the neck 200, a front cutting edge 320 is also provided, connecting to the peripheral cutting edge 310. An arc-shaped cutting edge 330 connects the peripheral cutting edge 310 and the front cutting edge 320. The arc-shaped cutting edge 330 reduces the radial force on the tool during cutting, increasing the cutting efficiency. The axial force on the tool is reduced, thereby reducing tool vibration, which in turn reduces burrs and chatter marks, and improves the surface finish of the product. In addition, a transitional cutting edge 340 is connected between the peripheral cutting edge 310 and the arc cutting edge 330. The setting of the transitional cutting edge 340 can reduce the risk of tool breakage and increase service life. Therefore, the T-shaped tool of this application can reduce the radial force on the tool, reduce the generation of transverse vibration of the tool, reduce chatter marks, improve the surface finish of the workpiece, and have a long service life.

[0031] It is understood that the front cutting edge 320 has a first cutting edge inclination angle, and the first cutting edge inclination angle is a positive value. For example, as shown in Figures 1-2, in this embodiment, the cutting edge inclination angle structure of the front cutting edge 320 can effectively ensure that the workpiece machined by the front cutting edge 320 has good surface finish during front face milling, and effectively avoid the generation of bottom cutting edge marks.

[0032] It is understandable that the cutting section 300 has a rear end cutting edge 350 near the neck 200, which is connected to the peripheral cutting edge 310. The rear end cutting edge 350 has a second cutting edge angle, which is also a positive value. For example, as Figures 2 to 3 As shown, in this embodiment, the rear cutting edge 350 has sufficient tip strength while being concave by 1°, which avoids direct contact between the rear end face of the cutting part 300 and the workpiece, thus improving the quality of the machined surface.

[0033] It is understandable that the first cutting edge has a 6° inclination angle and the second cutting edge has a 1° inclination angle. For example, as... Figures 2 to 3As shown, in this embodiment, the first cutting edge inclination angle of 6° can ensure that the workpiece machined by the front cutting edge 320 has good surface finish when the front face is milled. The second cutting edge inclination angle of 1° avoids direct contact between the rear end face of the cutting part 300 and the workpiece, thus improving the quality of the machined surface.

[0034] It is understandable that the center of the end of the cutting portion 300 away from the chin 200 is further recessed inward relative to the front cutting edge 320. For example, as Figure 3 As shown, in this embodiment, the end center of the cutting part 300 away from the neck 200 is further provided relative to the rear end edge 350. The inward concavity of the front end center of the tool increases the chip space at the front end of the cutting part 300, increases the flow space of the cutting fluid, and accelerates the outflow speed of the cutting fluid.

[0035] It is understandable that the end of the front cutting edge 320 away from the arc cutting edge 330 has a chamfer 360. For example, as Figure 3 As shown, in this embodiment, the end of the front cutting edge 320 away from the arc cutting edge 330 is connected to the center of the cutting part 300 away from the end of the neck 200 through a chamfer 360, thereby reducing the risk of the cutting tip of the front cutting edge 320 breaking during processing and reducing the possibility of the broken cutting tip damaging the workpiece surface.

[0036] It is understood that the axial clearance angle of the arc-shaped cutting edge 330 is 8°, and the radial clearance angle is 4°. For example, in this embodiment, the arc transition provides sufficient tip strength for the tool when cutting the workpiece, while the arc-shaped cutting edge 330 increases the axial force on the tool and reduces the radial force, thus lowering the risk of lateral vibration of the tool.

[0037] It is understandable that the rake angle of the peripheral blade 310 is 4°, and the peripheral blade 310 has a first and a second rear clearance facet arranged sequentially to provide clearance. The first rear clearance angle of the peripheral blade 310 is 4°, and the second rear clearance angle of the peripheral blade 310 is 16°. For example, as... Figure 4 As shown, in this embodiment, the 4° rake angle design provides a suitable cutting rake angle and tool tip strength for the workpiece being machined; the double-plane clearance angle structure can well ensure good sharpness during cutting, making cutting light and fast, effectively avoiding tool wear, and exerting a squeezing effect on the machined surface of the workpiece after machining, making the workpiece surface smoother and improving the surface finish of the workpiece.

[0038] It is understandable that the core diameter of the cutting part 300 is 73% of the cutting diameter, and there are 10 peripheral cutting edges 310 and 10 end cutting edges respectively. For example, as Figure 4 As shown, in this embodiment, the large core provides sufficient tool strength and reduces axial bending during cutting. The 10-flute design reduces the amount of material cut per tooth at the same feed rate, significantly improving tool life.

[0039] It is understandable that the helix angle of the 310mm cutting edge is 35°. For example, as... Figure 1 As shown, in this embodiment, the 35° helix angle design reduces the radial cutting force of the tool, increases the axial cutting force, reduces the risk of transverse vibration of the tool, and improves the surface finish of the workpiece.

[0040] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A T-shaped blade, characterized in that, include: Handle; The blade neck is located at one end of the handle; The cutting part is located at the end of the blade neck away from the handle. A plurality of peripheral cutting edges are spirally wound around the outer periphery of the cutting part. A plurality of front cutting edges are provided at the end of the cutting part away from the blade neck. The front cutting edges are connected to the peripheral cutting edges one by one, and an arc cutting edge connects the front cutting edges and the peripheral cutting edges. A transition cutting edge connects the peripheral cutting edges and the arc cutting edges.

2. The T-shaped blade according to claim 1, characterized in that, The front cutting edge is provided with a first cutting edge inclination angle, and the first cutting edge inclination angle is a positive value.

3. The T-shaped blade according to claim 2, characterized in that, The cutting part has a rear end cutting edge near the neck of the blade. The rear end cutting edge is connected to the peripheral cutting edge. The rear end cutting edge has a second cutting edge inclination angle, which is also a positive value.

4. The T-shaped blade according to claim 3, characterized in that, The first cutting edge has an inclination angle of 6°, and the second cutting edge has an inclination angle of 1°.

5. The T-shaped blade according to claim 1, characterized in that, The center of the end of the cutting portion away from the blade neck is further recessed inward relative to the front cutting edge.

6. The T-shaped blade according to claim 5, characterized in that, The end of the front edge away from the arc edge has a chamfer.

7. The T-shaped blade according to claim 1, characterized in that, The axial rear angle of the arc-shaped cutting edge is 8°, and the radial rear angle of the arc-shaped cutting edge is 4°.

8. The T-shaped blade according to claim 1, characterized in that, The front angle of the peripheral blade is 4°, and the peripheral blade has a first rear angle face and a second rear angle face arranged in sequence to avoid gaps. The first rear angle of the peripheral blade is 4°, and the second rear angle of the peripheral blade is 16°.

9. The T-shaped blade according to claim 1, characterized in that, The core diameter of the cutting part is 73% of the cutting diameter, and there are 10 peripheral cutting edges and 10 end cutting edges.

10. The T-shaped blade according to claim 1, characterized in that, The helix angle of the peripheral blade is 35°.

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