Profiling milling cutter for die finish machining

Abstract

The utility model discloses a profiling milling cutter for die finish machining, which comprises a connecting rod, a second cutter body and a third cutter body, the lower part of the connecting rod is connected with a fixed rod in a sliding manner, the lower end of the fixed rod is fixedly connected with a cutter head, the middle part of the cutter head is provided with a first bolt, and a first cutter body is arranged below the cutter head. By means of the structure, the tool bit can be replaced so as to be matched with machining of various materials, the split type structure is adopted, the strength of the rod body is guaranteed, meanwhile, the rod body can be replaced, and the cost brought by replacing the whole rod body due to collision breakage and the like is reduced.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, and in particular to a profile milling cutter for mold finishing. Background Technology

[0002] A profile end mill is a milling tool specifically designed to replicate complex shapes or contours. It is typically used to machine irregular surfaces that are difficult to precisely machine with conventional end mills. These milling cutters are designed to move along a pre-existing model or template, thus replicating the same shape. The working principle of a profile end mill involves using a cutter head with a roller or slider that rests against the contour of the template. As the milling machine spindle rotates the cutter, the tool moves up and down or left and right along the contour of the template, precisely removing material and replicating the same three-dimensional shape as the template. This machining method is particularly suitable for industries such as furniture manufacturing, mold making, aerospace, and art production, where high precision and complex shapes are required. Depending on the application, profile end mills come in various types, including single-edged, multi-edged, ball-end, and pointed, each with its specific applications and advantages. Choosing the appropriate profile end mill and machining parameters is crucial to ensuring machining quality and efficiency.

[0003] In existing technologies, after the initial milling operation, secondary finishing is still required. Some milling cutter heads used for finishing cannot be replaced. Given the variety of metal materials that milling machines can process, a single milling cutter head cannot be fully adapted, requiring the replacement of the entire cutter shank, which increases the operating cost. Some milling cutter shanks are integral structures, which may break in special circumstances such as machine collisions. However, due to the special material of the shank, its cost is relatively high, and a breakage will render the entire structure unusable, resulting in significant overall losses. Utility Model Content

[0004] The purpose of this utility model is to provide a profile milling cutter for mold precision machining, which can replace the cutter head to adapt to the machining of various materials. By adopting a split structure, the strength of the rod body is guaranteed while the rod body can be replaced, reducing the cost of replacing the entire rod body due to reasons such as breakage.

[0005] To achieve the above objectives, a profile milling cutter for mold finishing is provided, comprising a connecting rod, a second cutter body, and a third cutter body. A fixing rod is slidably connected to the lower part of the connecting rod, and a cutter head is fixedly connected to the lower end of the fixing rod. A first bolt is provided in the middle of the cutter head, and a first cutter body is provided below the cutter head.

[0006] According to the aforementioned profile milling cutter for precision machining of molds, a first threaded hole is provided in the middle of the first cutter body, and a second threaded hole is provided in the middle of the cutter head. The first threaded hole and the second threaded hole correspond to each other. The first bolt is threadedly connected to the first threaded hole and the first bolt is threadedly connected to the second threaded hole. A positioning block is fixedly connected above the first cutter body, and the positioning block is slidably connected to the fixing rod.

[0007] According to the aforementioned profile milling cutter for precision machining of molds, the upper left and right sides of the fixed rod are provided with openings, and the left and right sides of the connecting rod are threaded with second bolts, the right end of the second bolt on the left side corresponds to the opening, and the left end of the second bolt on the right side corresponds to the opening.

[0008] According to the aforementioned profile milling cutter for precision machining of molds, positioning chambers are fixedly connected to the upper left and right sides of the connecting rod, and springs are fixedly connected inside the positioning chambers. A limit block is fixedly connected to the other end of the spring, and the limit block corresponds to the fixing rod.

[0009] According to the aforementioned profile milling cutter for precision machining of molds, a rod body is slidably connected inside the connecting rod, and a top block is fixedly connected below the rod body, with the top block abutting against the fixed rod.

[0010] According to the aforementioned profile milling cutter for precision machining of molds, the first cutter body is made of polycrystalline diamond.

[0011] According to the aforementioned mold precision machining profile milling cutter, a first threaded hole is provided in the middle of the second cutter body, a positioning block is fixedly connected to the upper part of the second cutter body, and the material of the second cutter body is ceramic.

[0012] According to the aforementioned mold finishing milling cutter, a first threaded hole is provided in the middle of the third cutter body, a positioning block is fixedly connected to the upper part of the third cutter body, and the material of the third cutter body is cubic boron nitride.

[0013] This utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, this profile milling cutter for mold finishing comprises a first cutter body, a second cutter body, and a third cutter body, made of polycrystalline diamond, ceramic material, and cubic boron nitride, respectively. Polycrystalline diamond is suitable for machining non-ferrous metals such as aluminum alloys, copper alloys, and composite materials; ceramic material is mainly used for cutting hardened steel or other high-hardness materials; cubic boron nitride is used for cutting tasks requiring extremely high wear resistance. Through its inherent properties, the operator can achieve the purpose of machining different metals by changing the cutter body.

[0015] 2. Compared with the existing technology, this mold precision machining profile milling cutter is equipped with a connecting rod and a fixing rod. By rotating the second bolt, the cutter bar can be separated. When the connecting rod breaks, only the connecting rod needs to be replaced, without the need to replace the whole thing, thus saving certain costs.

[0016] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a perspective view of a profile milling cutter for precision machining of molds according to this utility model;

[0019] Figure 2 This is a cross-sectional view of a profile milling cutter for precision machining of molds according to this utility model;

[0020] Figure 3 This is a left-side sectional view of the cutting head of a profile milling cutter for precision machining of molds according to this utility model;

[0021] Figure 4 This is a schematic diagram showing the separation of the cutting head and the first cutting body of a profile milling cutter for precision machining of molds according to this utility model;

[0022] Figure 5 This is a perspective view of the second cutter body of a profile milling cutter for precision machining of molds according to this utility model;

[0023] Figure 6 This is a perspective view of the third cutter body of a profile milling cutter for precision machining of molds according to this utility model.

[0024] Legend:

[0025] 1. Connecting rod; 2. Fixing rod; 3. Cutting head; 4. First bolt; 5. First cutting body; 6. First threaded hole; 7. Positioning block; 8. Second threaded hole; 9. Opening; 10. Second bolt; 11. Positioning chamber; 12. Spring; 13. Limiting block; 14. Rod body; 15. Top block; 16. Second cutting body; 17. Third cutting body. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-6This utility model discloses a profile milling cutter for precision mold machining, comprising a connecting rod 1, a second cutter body 16, and a third cutter body 17. A fixing rod 2 is slidably connected to the lower part of the connecting rod 1, and a cutter head 3 is fixedly connected to the lower end of the fixing rod 2. A first bolt 4 is provided in the middle of the cutter head 3, and a first cutter body 5 is provided below the cutter head 3. The first cutter body 5 is made of polycrystalline diamond, and a first threaded hole 6 is provided in the middle of the first cutter body 5. A second threaded hole 8 is provided in the middle of the cutter head 3, and the first threaded hole 6 and the second threaded hole 8 correspond to each other. The first bolt 4 is threadedly connected to the first threaded hole 6 and the second threaded hole 8. A positioning block 7 is fixedly connected to the upper part of the first cutter body 5, and the positioning block 7 is slidably connected to the fixing rod 2. Openings 9 are provided on the left and right sides of the upper part of the fixing rod 2, and the left and right sides of the connecting rod 1 are threadedly connected to... The second bolt 10, the right end of the left second bolt 10 corresponds to the opening 9, the left end of the right second bolt 10 corresponds to the opening 9, the upper left and right sides of the connecting rod 1 are fixedly connected to the positioning chamber 11, the positioning chamber 11 is fixedly connected to the spring 12, the other end of the spring 12 is fixedly connected to the limit block 13, the limit block 13 corresponds to the fixed rod 2, the connecting rod 1 is slidably connected to the rod body 14, the bottom of the rod body 14 is fixedly connected to the top block 15, the top block 15 abuts against the fixed rod 2, the second cutter body 16 has a first threaded hole 6 in the middle, the second cutter body 16 is fixedly connected to the upper part of the second cutter body 16, the second cutter body 16 is made of ceramic, the third cutter body 17 has a first threaded hole 6 in the middle, the third cutter body 17 is fixedly connected to the upper part of the third cutter body 17, the third cutter body 17 is made of cubic boron nitride.

[0028] The aforementioned structure includes a first cutting body 5 made of polycrystalline diamond (PCD). PCD cutting bodies are high-performance cutting tools widely used in high-precision and high-efficiency machining tasks. The main advantages of this cutting body are as follows: Hardness: PCD is one of the hardest known materials, second only to single-crystal diamond. This high hardness allows it to effectively cut very hard materials such as aluminum alloys and composite materials. Wear Resistance: Due to its extremely high hardness, PCD cutting bodies exhibit excellent wear resistance during prolonged cutting. Wear is minimal, extending service life and reducing replacement frequency and costs. Cutting Performance: PCD cutting bodies maintain stable performance under high-speed cutting conditions, making them suitable for high-production-efficiency machining tasks and improving productivity and machining quality. Thermal Stability: PCD cutting bodies have good high-temperature resistance, maintaining stable performance in high-temperature environments, making them suitable for machining conditions with high temperatures or high cutting heat. Surface Finish: PCD cutting bodies achieve extremely high surface finish and machining accuracy, making them particularly suitable for precision machining applications requiring high surface quality. Cutting Force: Polycrystalline diamond (PCD) tool bodies generate lower cutting forces during cutting, helping to reduce machine load and energy consumption, and improve machining stability. Chemical Stability: PCD tool bodies exhibit good corrosion resistance to most chemicals, making them suitable for machining materials containing corrosive substances or for use in special environments. Tool Reusability: Due to their extremely high wear resistance and hardness, PCD tool bodies can be reused after multiple resharpening sessions, reducing the overall cost of tools. Application Areas: Composite Material Machining: Such as carbon fiber, glass fiber reinforced plastics, etc. Aluminum Alloy Machining: Suitable for high-precision aluminum parts. Automotive and Aerospace: Manufacturing precision components. Summary: Due to its extremely high hardness and wear resistance, PCD tool bodies provide excellent performance under demanding machining conditions, making them particularly suitable for high-precision and high-efficiency machining tasks.

[0029] By incorporating a second cutting body 16 made of ceramic, ceramic cutting tools, typically made of alumina, silicon nitride, or other ceramic materials, offer significant advantages in cutting tools due to their unique material properties. The main advantages of ceramic cutting tools are as follows: Hardness: Ceramic cutting tools possess very high hardness, often exceeding that of traditional carbide tools, enabling effective cutting of high-hardness materials such as hardened steel and certain alloys, providing high-precision machining results. Wear Resistance: Ceramic cutting tools exhibit extremely high wear resistance, with a very slow wear rate, extending tool life and reducing replacement frequency and maintenance costs. Thermal Stability: Ceramic cutting tools maintain their hardness and cutting performance at high temperatures, making them suitable for applications with high cutting speeds and high cutting temperatures, reducing the risk of tool failure due to heat. Cutting Force: Ceramic cutting tools typically have lower cutting forces, reducing the burden on the workpiece and machine during machining, improving machining efficiency and reducing equipment wear. Chemical Stability: Ceramic materials have excellent resistance to most chemicals, making them suitable for machining chemically complex materials or for use in corrosive environments. Machining Accuracy: Ceramic cutting tools achieve very high machining accuracy, making them suitable for precision machining tasks and capable of producing high-quality workpiece surfaces and dimensional precision. Non-magnetic: Ceramic cutting tools are non-magnetic, suitable for machining magnetic materials, avoiding magnetic interference. Thermal Expansion: Ceramic materials have a low coefficient of thermal expansion, resulting in good dimensional stability of the tool under temperature changes, reducing the risk of deformation. Application Areas: Machining of high-hardness materials: such as hardened steel and titanium alloys. Cutting in high-temperature environments: such as high-speed cutting tasks. Chemically corrosive environments: such as machining with certain corrosive chemicals. Due to its high hardness, wear resistance, thermal stability, and chemical stability, ceramic cutting tools provide excellent performance in demanding cutting tasks. However, it also has some drawbacks, such as being relatively brittle and potentially prone to fracture under impact loads; therefore, it is best suited for precision, high-speed cutting applications.

[0030] The tool body 17, made of cubic boron nitride (CBN), is a superhard material primarily used for cutting hard metals. The main advantages of CBN tools are as follows: Hardness: Extremely high hardness, enabling the cutting of very hard materials such as hardened steel and high-hardness alloys. Wear Resistance: CBN tools experience very slow wear, extending tool life and reducing replacement frequency and maintenance costs. Thermal Stability: CBN maintains its hardness and performance at high cutting temperatures, making it suitable for high-speed and high-temperature cutting conditions, reducing the risk of tool failure due to heat. Chemical Stability: CBN exhibits good resistance to chemical reactions with iron-based materials, making it suitable for machining ferrous materials and preventing chemical reactions between the material and the tool. Cutting Force: CBN tools have low cutting forces, improving machining efficiency and reducing the burden on machines and workpieces. Machining Accuracy: CBN tools enable high-precision cutting, suitable for machining tasks requiring strict dimensional and surface quality control. Thermal Conductivity: Cubic boron nitride (CBN) materials possess high thermal conductivity, effectively dissipating heat generated during cutting, helping to maintain tool temperature stability and reducing the effects of thermal expansion. Applications: Machining of hardened steel: Particularly suitable for quenched hardened steel and other high-hardness materials; High-precision cutting: Used for machining precision parts; High-speed cutting: Performs excellently under high-speed cutting conditions. Due to its extremely high hardness, wear resistance, and thermal stability, CBN tool bodies provide excellent performance in machining tasks requiring high hardness and precision. However, the tool bodies are relatively expensive and can be brittle, making them suitable for specialized machining applications requiring high loads and high precision.

[0031] The positioning chamber 11 is provided, and a spring 12 is fixedly connected inside the positioning chamber 11. The other end of the spring 12 is fixedly connected to a limiting block 13. The limiting block 13 corresponds to the upper groove of the fixing rod 2, so that the limiting block 13 can position the fixing rod 2. When the fixing rod 2 is inserted into the interior of the connecting rod 1, it can be clearly felt whether the fixing rod 2 has reached its position, which facilitates the subsequent locking work.

[0032] By providing a rod body 14, with a top block 15 fixedly connected to the lower end of the rod body 14, and the bottom of the top block 15 contacting the fixed rod 2, when the fixed rod 2 breaks, and the break point is close to the connecting rod 1, the operator can use the rod body 14 to push out the fixed rod 2 located inside the connecting rod 1.

[0033] The connecting rod 1 is provided so that the fixed rod 2 can be connected to the machine tool connector.

[0034] By providing a second bolt 10, the fixing rod 2 can be fixed inside the connecting rod 1, and the rotation of the fixing rod 2 can be prevented.

[0035] Working principle: This mold finishing milling cutter uses a profile milling cutter. When using it, the first cutter body 5, the second cutter body 16, or the third cutter body 17 are selected according to the material of the raw material being processed, so that the milling cutter can process a variety of metals. When the fixing rod 2 breaks, the fixing rod 2 can be replaced by removing the second bolt 10.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model 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 the present utility model.

Claims

1. A profile milling cutter for mold finishing, characterized by, Including connecting rod (1), second cutter (16) and third cutter (17), the lower sliding connection of connecting rod (1) has fixed rod (2), the lower end of fixed rod (2) is fixedly connected with tool bit (3), the middle part of tool bit (3) is provided with first bolt (4), and the lower part of tool bit (3) is provided with first cutter (5).

2. A profile milling cutter for finishing a mould according to claim 1, characterised in that The middle part of first cutter (5) is provided with first threaded hole (6), the middle part of tool bit (3) is provided with second threaded hole (8), first threaded hole (6) corresponds to second threaded hole (8), first bolt (4) is in threaded connection with first threaded hole (6), first bolt (4) is in threaded connection with second threaded hole (8), and the upper part of first cutter (5) is fixedly connected with positioning block (7), and positioning block (7) is in sliding connection with fixed rod (2).

3. The profile milling cutter for mold finishing according to claim 1, characterized in that, The upper left and right sides of fixed rod (2) are provided with opening (9), and the left and right sides of connecting rod (1) are in threaded connection with second bolt (10), the right end of left second bolt (10) corresponds to opening (9), and the left end of right second bolt (10) corresponds to opening (9).

4. The profile milling cutter for mold finishing according to claim 1, characterized in that, The upper left and right sides of the inside of connecting rod (1) are fixedly connected with positioning bin (11), the inside of positioning bin (11) is fixedly connected with spring (12), the other end of spring (12) is fixedly connected with limiting block (13), and limiting block (13) corresponds to fixed rod (2).

5. The profile milling cutter for mold finishing according to claim 1, wherein The inside of connecting rod (1) is in sliding connection with rod body (14), the lower part of rod body (14) is fixedly connected with top block (15), and top block (15) abuts against fixed rod (2).

6. The profile milling cutter for mold finishing according to claim 1, characterized in that, The material of first cutter (5) is polycrystalline diamond.

7. The profile milling cutter for mold finishing according to claim 1, characterized in that, The middle part of second cutter (16) is provided with first threaded hole (6), the upper part of second cutter (16) is fixedly connected with positioning block (7), and the material of second cutter (16) is ceramic.

8. The profile milling cutter for mold finishing according to claim 1, characterized in that, The middle part of third cutter (17) is provided with first threaded hole (6), the upper part of third cutter (17) is fixedly connected with positioning block (7), and the material of third cutter (17) is cubic boron nitride.

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