A disc-mill cutter based on disc outer circle split type formable disc-mill cutter
By adopting a split design and fixed structure in the split-type indexable disc milling cutter with a split outer diameter, the cracking problem caused by stress concentration at the root of the cutter teeth is solved, and the durability and high efficiency of the tool are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING UNIV OF TECH NUMERICAL CONTROL TOOLS CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-21
AI Technical Summary
During the cutting process, traditional disc milling cutters are prone to cracking and damage at the root of the cutting teeth due to stress concentration, resulting in a short overall tool life.
The cutter head adopts a split outer circle design, with the blade installed in the mounting protrusion and groove of the cutting tooth and fixed by clamping rivets to form a split structure, which distributes the cutting force, reduces the depth of the groove, and increases the thickness at the connection between the cutting tooth and the cutter body.
It effectively prevents tooth breakage, extends tool life, reduces wear rate, improves processing efficiency and convenience, and reduces replacement and maintenance costs.
Smart Images

Figure CN224526071U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cutting tool technology, and in particular relates to a split-type indexable disc milling cutter based on the outer circle of the cutter head. Background Technology
[0002] A disc milling cutter is a disc-shaped metal cutting tool primarily used for face milling, grooving, and step surface machining. Its structure typically consists of a cutter body, cutting teeth, and a clamping device. The teeth are evenly distributed on the circumference or end face, achieving efficient cutting through high-speed rotation. Disc milling cutters are suitable for machining materials such as steel, cast iron, and aluminum alloys, featuring smooth cutting, efficient chip removal, and high machining efficiency. Based on application, they can be classified into face milling cutters, slot milling cutters, and combination milling cutters, and are widely used in machinery manufacturing, mold making, and aerospace industries. They are characterized by high rigidity and long service life, but the appropriate number of teeth, cutting edge shape, and coating must be selected according to the workpiece material and machining requirements.
[0003] Traditional disc milling cutters cut chips using their teeth. During the cutting process, stress concentration at the tooth roots can lead to cracking and damage. The large flute depth can also cause extrusion deformation or even breakage of the flute. Since chip cutting only occurs at the tooth tips, they are easily worn down and become unusable, resulting in a short service life. To address these issues, we provide a split-type indexable disc milling cutter based on the outer diameter of the cutter head. Utility Model Content
[0004] The purpose of this invention is to provide a split-type indexable disc milling cutter based on the outer circle of the cutter head, which solves the problem that cracking and damage occur at the root of the cutter teeth due to stress concentration during the cutting process of existing disc milling cutters.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.
[0006] This utility model is a split-type indexable disc milling cutter based on the outer circle of the cutter head, including a cutter body and cutter teeth. The cutter teeth are disposed on the surface of the cutter body and are a split structure. The surface of the cutter teeth is respectively provided with mounting grooves and tooth grooves. Cutting blades are disposed inside the mounting grooves and tooth grooves. Clamping rivets are respectively installed between the cutting blades and the mounting grooves and tooth grooves. A cutting hole is provided on one side of the cutter teeth.
[0007] The present invention is further configured such that a toothed hole is provided on one side of the blade for use with a fastener to fix the blade.
[0008] The present invention is further configured such that the blade has a trapezoidal structure, one side of the blade is fitted with the mounting groove, and the clamping rivet can fix the blade.
[0009] The present invention is further configured such that each of the tooth grooves on the cutter body is equipped with the blade, so as to achieve uniform distribution of cutting force.
[0010] The present invention is further configured such that the installation of the blade can reduce the depth of the tooth groove and increase the thickness at the connection between the blade tooth and the blade body, thereby dispersing stress and preventing breakage.
[0011] This invention has the following advantages: By adding a cutting insert to the original split-structure disc milling cutter with separate cutter body and cutting teeth, and installing the cutting insert in the tooth groove, the stress dispersion effect in the tooth groove can be increased, and the thickness at the connection between the cutting teeth and the cutter body can be increased, which can prevent breakage. The cutting insert can be used to cut chips, thereby reducing the wear rate of the main chip-cutting cutting teeth and improving the service life of the disc milling cutter. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0013] Figure 1 This is a three-dimensional view of a split-type indexable disc milling cutter based on the outer circle of the cutter head.
[0014] Figure 2 This is a front view of a split-type indexable disc milling cutter based on the outer circle of the cutter head.
[0015] Figure 3 This is a partial structural diagram of a split-type indexable disc milling cutter based on the outer circle of the cutter head.
[0016] Figure 4 This is a bottom view of the cutting teeth in a split-type indexable disc milling cutter based on the outer circle of the cutter head.
[0017] Figure 5 This is a schematic diagram of the insert structure in a split-type indexable disc milling cutter based on the outer circle of the cutter head.
[0018] In the attached diagram: 1. Blade body; 2. Blade teeth; 3. Mounting groove; 4. Tooth groove; 5. Blade; 6. Clamping rivet; 7. Blade hole; 8. Tooth hole. Detailed Implementation
[0019] The technical solutions of the present invention will be described below with reference to the accompanying drawings of the embodiments of the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1
[0020] Please see Figures 1-5This utility model is a split-type indexable disc milling cutter based on the outer circle of the cutter head, including a cutter body 1 and a cutter tooth 2. The cutter tooth 2 is set on the surface of the cutter body 1 and is a split structure. The surface of the cutter tooth 2 is respectively provided with mounting grooves 3 and tooth grooves 4. The mounting grooves 3 and tooth grooves 4 are each provided with a cutting blade 5. The cutting blade 5 is respectively installed with a clamping rivet 6 between the mounting grooves 3 and tooth grooves 4. A cutting hole 7 is opened on one side of the cutter tooth 2.
[0021] Specifically: the cutting tooth 2 is set on the surface of the cutter body 1 and is a split structure. The split design allows for independent replacement of the cutting tooth 2, reducing the overall scrap cost caused by local damage. The mounting groove 3 provides positioning support for the blade 5, and the tooth groove 4 is used to accommodate the blade 5 and distribute the cutting stress. The blade 5 is fixed by the clamping rivet 6, forming a double cutting structure, which shares the cutting load of the main cutting tooth 2 and extends the tool life. A cutting hole 7 is opened on one side of the cutting tooth 2 for fastening fasteners to achieve quick installation and replacement, improving maintenance efficiency. Example 2
[0022] Please see Figures 1-5 Based on embodiment 1, a toothed hole 8 is provided on one side of the blade 5 for use with fasteners to fix the blade 5. The blade 5 has a trapezoidal structure, and one side of the blade 5 fits into the mounting groove 3. The clamping rivet 6 can fix the blade 5. Each toothed groove 4 on the blade body 1 is equipped with a blade 5 to achieve uniform distribution of cutting force. The installation of the blade 5 can reduce the depth of the toothed groove 4 and increase the thickness at the connection between the cutting tooth 2 and the blade body 1, thereby dispersing stress and avoiding breakage.
[0023] Specifically: The blade 5 has a toothed hole 8 on one side, which is connected to the tool body 1 by fasteners to enhance the rigidity of the cutting teeth 2 and prevent loosening or displacement during cutting. The blade 5 has a trapezoidal structure, and its inclined surface fits tightly with the mounting groove 3 to ensure uniform force. The clamping rivet 6 passes through the blade 5 and the tooth groove 4 to provide radial clamping force and prevent the blade 5 from vibrating or falling off during high-speed cutting. Each tooth groove 4 on the tool body 1 is equipped with a blade 5. Through the collaborative cutting of multiple blades 5, wear is balanced and processing efficiency is improved. It is suitable for high-intensity continuous cutting conditions. The installation of the blade 5 reduces the depth of the tooth groove 4 and increases the cross-sectional area at the connection between the cutting teeth 2 and the tool body 1, which significantly reduces the risk of stress concentration. The cutting action of the blade 5 disperses the wear of the main cutting teeth 2, thereby improving the overall tool life.
[0024] The working principle of this utility model is as follows: the blade 5 is installed on the mounting protrusion 3 of each tooth groove 4 on the cutter body 1 using fasteners, and the cutter body 1 is installed on the machine tool for use. When cutting chips, the blade 5 can share the chip cutting action of the cutting teeth 2, thereby reducing the wear of the chip cutting part at the end of the cutting teeth 2 and extending the service life of the disc milling cutter.
[0025] The main innovation of this cutter head is that the cutter body 1 and the insert 5 are separated, which improves the convenience of machining. At the same time, if the tool groove is damaged and deformed during the cutting process, resulting in accuracy error, only the insert 5 can be replaced. However, if this happens to a traditional integral cutter head, especially if the situation is serious, the entire cutter head will be scrapped, increasing the machining cost. In addition, the split design reduces the amount of manual labor required for transportation and processing compared to traditional cutter heads.
[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A split-type indexable disc milling cutter based on the outer circle of the cutter head, comprising a cutter body (1) and cutter teeth (2), characterized in that: The cutting teeth (2) are disposed on the surface of the blade body (1) and are a split structure; The surface of the cutting tooth (2) is provided with mounting groove (3) and tooth groove (4), and the mounting groove (3) and tooth groove (4) are provided with blades (5). A clamping rivet (6) is installed between the blade (5) and the mounting groove (3) and tooth groove (4), and a cutting hole (7) is provided on one side of the cutting tooth (2).
2. The split-type indexable disc milling cutter based on the outer circle of the cutter head according to claim 1, characterized in that: The blade (5) has a toothed hole (8) on one side for use with fasteners to fix the blade (5).
3. The split-type indexable disc milling cutter based on the outer circle of the cutter head according to claim 1, characterized in that: The blade (5) has a trapezoidal structure. One side of the blade (5) fits into the mounting groove (3). The clamping rivet (6) can fix the blade (5).
4. A split-type indexable disc milling cutter based on the outer circle of the cutter head according to claim 1, characterized in that: Each of the tooth grooves (4) on the cutter body (1) is equipped with the blade (5) to achieve uniform distribution of cutting force.
5. A split-type indexable disc milling cutter based on the outer diameter of the cutter head according to claim 1, characterized in that: The installation of the blade (5) can reduce the depth of the tooth groove (4) and increase the thickness at the connection between the blade tooth (2) and the blade body (1), thereby dispersing stress and preventing breakage.