Contour milling high light titanium alloy pcd multi-blade tool

Abstract

The utility model discloses a profile milling high light titanium alloy PCD multi-blade cutter, including handle and tool bit, the tool bit sets 9-18 strips of blade zone, the width of blade zone is 0.03-0.08mm, the blade zone is spiral and spiral angle is 20 DEG, the rake angle of blade zone is 10 DEG, the axial one of blade zone is 5 DEG. The utility model discloses adopting PCD material, adopts the design of multiple blades, and the blade zone is used to the work piece being processed to produce slight extrusion and polishing effect, thereby obtains very smooth surface.

Description

Technical Field

[0001] This utility model relates to PCD cutting tools, specifically a high-gloss titanium alloy PCD multi-blade cutting tool for contour milling. Background Technology

[0002] Titanium alloy surface finishing is an art that combines precision manufacturing and surface treatment, and it is currently developing towards high precision, high efficiency, green environmental protection and intelligentization.

[0003] Currently, in the medical and health field, artificial joints and bone implants require precise morphology, smooth surfaces (to reduce tissue friction), and good osseointegration capabilities. In the consumer electronics field, smartphone frames, hinges, and watch cases, among others, have extremely high requirements for surface treatment, needing to balance aesthetics (color, texture), tactile feel, and wear and scratch resistance. This not only tests the machinability of titanium alloys but also imposes even more stringent requirements on the quality of the machined surfaces.

[0004] Titanium alloys have poor thermal conductivity, making them prone to heat generation and accumulation during machining and polishing. This can lead to surface burns, microcracks, or deformation of the workpiece, affecting yield and performance. Therefore, this project aims to develop high-gloss titanium alloy PCD multi-bladed tools for contour milling with independent R&D and manufacturing capabilities. Utility Model Content

[0005] To address the shortcomings of the existing technology, this invention provides a high-gloss titanium alloy PCD multi-blade tool for contour milling. This invention uses PCD material and a multi-blade design, which, together with the cutting edge, produces a slight squeezing and polishing effect on the workpiece, thereby obtaining a very smooth surface.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: a contour milling high-gloss titanium alloy PCD multi-blade tool, comprising a tool holder and a tool head, wherein the tool head is provided with 9-18 cutting edges, the width of the cutting edges is 0.03-0.08mm, the cutting edges are helical and the helix angle is 20°, the rake angle of the cutting edges is 10°, and the axial clearance angle of the cutting edges is 5°.

[0007] The core thickness of the cutter head is 7mm, the front end profile diameter is 8.6mm, and the rear end profile diameter is 10mm.

[0008] The total length of the cutting tool is 60mm, the holding length of the cutting handle is 35mm, and the diameter of the cutting handle is 10mm.

[0009] Chip removal grooves are formed between the cutting edges.

[0010] In summary, this utility model achieves the following technical effects: This invention uses PCD material: it has high hardness, low coefficient of friction, and good wear resistance, which can enhance tool performance and extend tool life.

[0011] The multi-tooth design of this invention enables the cutting tool to achieve higher stability and vibration resistance during machining. Under the same machining parameters, the load per tooth is smaller, and the more frequent contact with the workpiece results in better surface quality. The design of the helix angle in this invention addresses the issue that each cutting edge of a straight-edged tool simultaneously and instantaneously enters and exits the workpiece across its entire tooth width, generating significant impact and vibration. The helical cutting edge, during rotation, generates an axial thrust upwards along the tool body. This force aids in chip removal and dissipates substantial cutting heat. Simultaneously, it prevents the tool and chips from negatively impacting the workpiece surface. This utility model features an axial clearance angle and a cutting edge design: the small axial clearance angle stabilizes the tool and reduces vibration. Combined with the cutting edge, it creates a slight squeezing and polishing effect on the workpiece, resulting in a very smooth surface. Attached Figure Description

[0012] Figure 1 It is a high-gloss titanium alloy PCD multi-blade tool for contour milling; Figure 2 yes Figure 1 A cross-sectional view of the cutter head position; Figure 3 yes Figure 1 The left view; Figure 4 yes Figure 1 Enlarged diagram of part A; Figure 5 yes Figure 1 A three-dimensional schematic diagram; Figure 6 yes Figure 5 Enlarged schematic diagram of part B in the middle. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings.

[0014] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 should not be construed as a limitation of this utility model.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] Example: Figure 1 It is a high-gloss titanium alloy PCD multi-blade tool for contour milling. Figure 2 yes Figure 1 A cross-sectional view of the cutter head position. Figure 3 yes Figure 1 Left view, Figure 4 yes Figure 1Enlarged diagram of part A. Figure 5 yes Figure 1 A three-dimensional diagram, Figure 6 yes Figure 5 The enlarged schematic diagram of part B includes the handle 1 and the cutter head 2. The cutter head 2 is equipped with 9-18 cutting edges 3. The width L1 of the cutting edges 3 is 0.03-0.08mm. The cutting edges 3 are spiral and the spiral angle is 20°. The rake angle of the cutting edges 3 is 10° and the axial clearance angle of the cutting edges 3 is 5°.

[0020] In this embodiment, the core thickness of the cutter head 2 is 7mm, the front end profile diameter is 8.6mm, and the rear end profile diameter is 10mm.

[0021] In this embodiment, the total length of the tool is 60mm, the holding length of the tool holder 1 is 35mm, and the diameter of the tool holder 1 is 10mm.

[0022] Chip removal grooves 4 are formed between the cutting edges 3.

[0023] In this invention, the cutting tool is made of PCD material, which has high hardness, low coefficient of friction, and good wear resistance, thereby enhancing the performance of the cutting tool and extending its life.

[0024] The multi-blade design of this utility model enables the tool to achieve higher stability and vibration resistance during processing. Under the same processing parameters, the load per tooth is smaller, and the more frequent contact with the workpiece results in better surface quality.

[0025] The design of the helix angle in this invention addresses the issue that, since each cutting edge of a straight-edged tool simultaneously and instantaneously cuts into and out of the workpiece across its entire tooth width, generating significant impact and vibration, the helical cutting edge of this invention generates an axial thrust upwards along the tool body during rotation. This force helps with chip removal and eliminates a large amount of cutting heat. Simultaneously, it prevents the tool and chips from affecting the surface of the workpiece.

[0026] This invention features an axial clearance angle and a cutting edge design. The small axial clearance angle stabilizes the tool and reduces vibration. Combined with the cutting edge, it creates a slight squeezing and polishing effect on the workpiece, resulting in a very smooth surface.

[0027] Example 1: There are 9 blades 3, each with a width of 0.03mm.

[0028] Example 2: There are 9 blades of type 3, each with a width of 0.05mm.

[0029] Example 3: There are 15 blades of type 3, each with a width of 0.03 mm.

[0030] Example 4: There are 18 blades 3, each with a width of 0.03mm.

[0031] Example 5: There are 18 blades 3, each with a width of 0.08mm.

[0032] The advantages of the cutting tool in this application compared to a conventional 4-flute profile end mill are shown in Table 1 below: Table 1 compares the machining effects of the cutting tool used in this application with those of a conventional four-flute contour milling cutter.

[0033] As shown in the table, when both cutting tools reached 80m, the RMS value of the 4-flute profile end mill spiked, indicating severe tool wear. This resulted in abnormal workpiece surface roughness, and the tool was affecting machining quality. In contrast, the PCD multi-flute profile end mill still maintained machining capability, and its overall RMS value remained stable. The workpiece surface roughness remained unchanged, and the workpiece quality remained excellent.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A contour milling high-gloss titanium alloy PCD multi-blade tool, comprising a tool holder (1) and a tool head (2), characterized in that: The cutter head (2) is provided with 9-18 cutting edges (3), the width of the cutting edge (3) is 0.03-0.08mm, the cutting edge (3) is spiral and the spiral angle is 20°, the front angle of the cutting edge (3) is 10°, and the axial back angle of the cutting edge (3) is 5°.

2. A profile milling high light titanium alloy PCD multi-blade cutter according to claim 1, characterized in that: The core thickness of the cutter head (2) is 7mm, the front end profile diameter is 8.6mm, and the rear end profile diameter is 10mm.

3. A profile milling high light titanium alloy PCD multi-blade cutter according to claim 1, characterized in that: The total length of the cutting tool is 60mm, the holding length of the cutting tool handle (1) is 35mm, and the diameter of the cutting tool handle (1) is 10mm.

4. A profile milling high light titanium alloy PCD multi-blade cutter according to claim 1, characterized in that: Chip removal grooves (4) are formed between the blades (3).

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