Multifunction chamfering cutter
By designing a multi-functional chamfering end mill that integrates multiple cutting edge shapes, the problem of low machining efficiency of existing chamfering end mills has been solved, achieving efficient machining of various chamfer shapes and wide applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN BERETON NEW MATERIAL CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-26
AI Technical Summary
Existing chamfering end mills have low processing efficiency and cannot simultaneously meet the processing requirements of different chamfer shapes, requiring frequent tool changes.
Design a multi-functional chamfering end mill with a shank and cutter head structure. The cutter head has multiple cutting sections combined with a necking structure. The cutting sections consist of concave arc cutting edges, straight cutting edges, and inclined straight cutting edges. The materials are high-speed steel, cemented carbide, CBN, or PCD, achieving the integration of multiple cutting edge shapes.
It enables the machining of different chamfer shapes in a single setup, improving machining efficiency, expanding the scope of application, and extending tool life.
Smart Images
Figure CN224406506U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting tool technology, specifically to a multi-functional chamfering end mill. Background Technology
[0002] Chamfering cutters are widely used for chamfering and deburring the edges of mechanical parts. On the one hand, they can prevent sharp edges of mechanical parts from scratching operators, and on the other hand, they can reduce stress concentration during the assembly of mechanical parts.
[0003] The main advantage of chamfering end mills is that they can perform batch processing in a single setup. However, most existing chamfering end mills are single-edged or symmetrical double-edged structures. When a part requires different chamfer shapes, it is difficult to complete the process in a single setup, necessitating a tool change. Therefore, existing chamfering end mills suffer from the problem of limited chamfer shape processing capabilities, failing to simultaneously meet the machining needs of mechanical parts requiring different chamfer shapes, resulting in low processing efficiency. To address this, we propose a multi-functional chamfering end mill to solve the aforementioned technical problems. Utility Model Content
[0004] The purpose of this invention is to provide a multifunctional chamfering end mill to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a multi-functional chamfering end mill, comprising a shank and a cutter head, wherein the shank is composed of a shank portion, a frustum transition portion, and a cylindrical portion connected in sequence; one end of the cylindrical portion is connected to the small end face of the frustum transition portion, and the other end of the cylindrical portion is connected to the cutter head; the diameter of the cylindrical portion is smaller than the diameter of the shank portion, thereby forming a necking structure at the part of the shank near the cutter head; the cutter head has multiple evenly distributed cutting portions, and a chip removal groove is provided between two adjacent cutting portions; the cutting portions include an inwardly concave arc cutting edge, a straight cutting edge, and an inclined straight cutting edge connected in sequence, and the inwardly concave arc cutting edge, the straight cutting edge, and the inclined straight cutting edge are all provided with a rake angle.
[0006] Furthermore, the chip removal groove is a V-shaped groove, which extends from the front end of the cutter head to the front section of the cylindrical part.
[0007] Furthermore, the angle range of the front angle is 2° to 10°.
[0008] Furthermore, the cutting portion protrudes from the cylindrical portion, and there are a total of four cutting portions.
[0009] Furthermore, the chamfering end mill is made of one or more materials selected from high-speed steel, cemented carbide, CBN, or PCD.
[0010] After adopting the above technical solution, it has the following beneficial effects compared with the existing technology: The chamfering end mill proposed in this solution has multiple cutting edge shapes by optimizing the shape of the cutting part, and has multi-functionality. That is, it can realize the processing of workpieces with different chamfering shape requirements in one clamping, which greatly improves the processing efficiency. In addition, the necking structure design is adopted, and the clearance space is reserved at the tool holder, which effectively avoids processing interference and significantly expands the scope of application. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0013] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;
[0014] Figure 3 This is the front view of this utility model;
[0015] Figure 4 This is the left view of this utility model.
[0016] Explanation of reference numerals in the attached drawings: 1. Tool holder; 11. Shank; 12. Frustum transition section; 13. Cylindrical section; 2. Tool head; 21. Cutting section; 211. Concave arc cutting edge; 212. Straight cutting edge; 213. Inclined straight cutting edge; 22. Chip removal groove. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.
[0018] To address the problems existing in the prior art, this utility model provides a multi-functional chamfering end mill. The following is a detailed description of this utility model with reference to the accompanying drawings.
[0019] See Figures 1-4 As shown, the technical solution adopted in this specific embodiment is: a multi-functional chamfering end mill, including a tool holder 1 and a tool head 2 connected to each other.
[0020] The tool holder 1 is composed of a shank 11, a frustum transition portion 12, and a cylindrical portion 13 connected in sequence. One end of the cylindrical portion 13 is connected to the small end face of the frustum transition portion 12, and the other end of the cylindrical portion 13 is connected to the cutter head 2. The large end face of the frustum transition portion 12 is connected to the shank 11. The cutting portion 21 protrudes from the cylindrical portion 13, and the diameter of the cylindrical portion 13 is smaller than the diameter of the shank 11, thus forming a necking structure near the cutter head 2. The necking structure provides clearance space, which can prevent the tool holder 1 from contacting the workpiece during cutting, thus broadening the applicability of the milling cutter.
[0021] Furthermore, the cutter head 2 is composed of multiple evenly distributed cutting sections 21. This design takes four cutting sections 21 as an example. A chip removal groove 22 is provided between two adjacent cutting sections 21. When four cutting sections 21 are provided, four chip removal grooves 22 are also formed. The cutting section 21 is composed of a combination of cutting edges of various shapes. Specifically, the cutting section 21 is composed of a concave arc cutting edge 211, a straight cutting edge 212, and an inclined straight cutting edge 213 connected in sequence. The inclined straight cutting edge 213 is located close to the cylindrical part 13, and the concave arc cutting edge 211, the straight cutting edge 212, and the inclined straight cutting edge 213 are connected in sequence in a geometric shape. Through the combination of cutting edges of various shapes in the cutting section 21, multiple uses of one tool can be achieved. When chamfering work with different requirements for chamfer shape, the function can be completed in one clamping, which greatly improves the processing efficiency. Specifically, the concave arc cutting edge 211, the straight cutting edge 212, and the inclined straight cutting edge 213 are all provided with a rake angle, the angle of which ranges from 2° to 10°. The setting of the rake angle can avoid stress concentration on the cutting edge, reduce the risk of chipping, and thus extend the life of the chamfering end mill.
[0022] In this design, the chip removal groove 22 is a V-shaped groove, and the chip removal groove 22 extends from the front end of the cutter head 2 to the front section of the cylindrical part 13 to facilitate chip removal.
[0023] It should be noted that the chamfering end mill in this solution can be made of one or more of the following materials: high-speed steel, cemented carbide, CBN (cubic boron nitride), or PCD (polycrystalline diamond).
[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.
[0025] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A multi-functional chamfering end mill, comprising a shank (1) and a cutter head (2), characterized in that, The tool holder (1) is composed of a shank (11), a frustum transition (12), and a cylindrical part (13) connected in sequence; one end of the cylindrical part (13) is connected to the small end face of the frustum transition (12), and the other end of the cylindrical part (13) is connected to the cutting head (2); the diameter of the cylindrical part (13) is smaller than the diameter of the shank (11), thereby forming a necking structure at the part of the tool holder (1) near the cutting head (2); The cutter head (2) has multiple evenly distributed cutting sections (21), and a chip removal groove (22) is provided between two adjacent cutting sections (21); the cutting section (21) includes a concave arc blade (211), a straight blade (212), and an inclined straight blade (213) connected in sequence, and the concave arc blade (211), the straight blade (212), and the inclined straight blade (213) are all provided with a front angle.
2. The multi-functional chamfering cutter according to claim 1, wherein The chip removal groove (22) is a V-shaped groove, which extends from the front end of the cutter head (2) to the front section of the cylindrical part (13).
3. The multi-functional chamfering cutter according to claim 1, wherein The angle range of the front angle is 2° to 10°.
4. The multi-functional chamfering cutter according to claim 1, wherein The cutting part (21) protrudes from the cylindrical part (13), and there are four cutting parts (21) in total.
5. The multi-functional chamfering cutter according to claim 1, wherein The chamfering end mill is made of one or more materials selected from high-speed steel, cemented carbide, CBN, or PCD.