Anti-loose diamond milling cutter

Abstract

This utility model discloses an anti-loosening diamond end mill, including a cutter shank, a cutter head, an anti-loosening disassembly assembly, and a limiting assembly. The beneficial effects of this utility model are: the anti-loosening disassembly assembly facilitates replacement; when the insert is severely worn or damaged, the user can easily remove the old insert from the cutter head surface and replace it with a new one without replacing the entire end mill, saving costs. Furthermore, the cooperation between the first fastening screw and the compression spring ensures that the insert is constantly subjected to an outward pushing force from the compression spring while fixed, resulting in a tighter connection between the first fastening screw, the insert, and the cutter head. During milling, the tool is subjected to significant cutting forces and vibrations; this tight connection effectively resists these external forces, reducing the possibility of the first fastening screw loosening or falling off, thus ensuring the stability of the insert during operation and achieving higher milling accuracy.

Description

Technical Field

[0001] This utility model relates to a milling cutter, specifically a diamond milling cutter with anti-loosening properties, belonging to the field of milling cutter technology. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. During operation, each cutting tooth sequentially and intermittently removes the excess material from the workpiece. Milling cutters are used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces. Diamond milling cutters are mainly composed of an ultra-fine grain cemented carbide matrix and a diamond CVD coating, and their machining life is more than 20 times longer than that of uncoated tools. They are mainly used for high-speed cutting of non-ferrous materials such as graphite, aluminum alloys, and copper.

[0003] In the prior art, such as the sintered diamond end mill disclosed in CN220127688U, the heat sink is provided to improve the heat dissipation of the end mill shank, and the insert holder and diamond insert are provided to reduce the wear of the end mill and improve the milling effect of the workpiece. In the prior art, the diamond insert and end mill head are fixed. When the wear of the diamond insert affects the quality of the end mill, the entire end mill often needs to be replaced. This results in the discarding of the intact shank, which increases the processing cost and wastes resources. In addition, the prior art cannot limit the milling depth during use. Utility Model Content

[0004] The purpose of this invention is to provide a diamond end mill that prevents loosening in order to solve at least one of the above-mentioned technical problems.

[0005] The present invention achieves the above objectives through the following technical solution: a diamond end mill that prevents loosening, comprising a shank and a cutter head fixedly connected to the bottom end of the shank;

[0006] The bottom surface of the cutter head is provided with an anti-loosening assembly. The anti-loosening assembly includes a mounting groove on the bottom surface of the cutter head, a blade inserted into the mounting groove, and a first fastening screw inserted on the surface of the cutter head and the blade. The blade is detachably connected to the cutter head through the first fastening screw.

[0007] The surface of the tool holder is provided with a limiting component, which includes a limiting plate that is slidably sleeved on the surface of the tool holder and a long rod screw inserted into the surface of the limiting plate. The limiting plate is connected to the tool holder through the long rod screw.

[0008] As a further improvement of this utility model, the blade is made of diamond material and its surface is coated with a CVD coating.

[0009] As a further embodiment of this utility model: a strip groove communicating with the mounting groove is provided on the bottom surface of the blade, a strip block is fixedly connected to the surface of the blade, the size of the strip block is adapted to the strip groove, and compression springs are equidistantly arranged in the strip groove, and the compression springs are fixedly connected to the blade.

[0010] As a further improvement of this utility model: the first fastening screws are provided in two sets, and each set contains three screws, which are arranged in a triangular pattern.

[0011] As a further embodiment of this utility model: the surface of the tool bar is symmetrically provided with sliding grooves, and the inner surface of the limiting plate is symmetrically fixedly connected with sliders, which are inserted into the sliding grooves and are slidably connected to the tool bar.

[0012] As a further improvement of this utility model: a rectangular groove is formed on the surface of the tool holder, and a long screw extends to the surface of the rectangular groove and abuts against the tool holder.

[0013] As a further improvement of this utility model, a scale line is fixedly provided on one side of the rectangular groove on the surface of the tool holder.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model is equipped with an anti-loosening disassembly component, which facilitates replacement. When the blade is severely worn or damaged, the user can easily remove the old blade from the cutter head surface and replace it with a new blade without replacing the entire milling cutter, saving costs. On the other hand, through the cooperation of the first fastening screw and the compression spring, the blade is always subjected to the outward pushing force of the compression spring when it is fixed, thereby making the connection between the first fastening screw, the blade, and the cutter head tighter. During the milling process, the tool will be subjected to large cutting forces and vibrations. This tight connection can effectively resist these external forces and reduce the possibility of the first fastening screw loosening or falling off, thereby ensuring the stability of the blade during operation and making the milling accuracy higher.

[0016] 2. This utility model is equipped with a limiting component. First, by setting a limiting plate, the depth of the milling cutter entering the workpiece can be precisely controlled. During high-precision machining, the accuracy of the machining dimensions can be guaranteed, and products that meet strict tolerance requirements can be produced. Second, the worker can easily move the position of the limiting plate on the tool holder according to the machining requirements and quickly set the milling depth without the need for complex measuring tools or additional auxiliary devices, saving time and effort and improving machining efficiency. Furthermore, the limiting plate can prevent the milling cutter from excessively cutting into the workpiece, avoiding situations such as workpiece scrap, tool damage, or even machine tool failure due to excessive milling depth, thus ensuring the safety of the machining process.

[0017] 3. The blade in this utility model is made of diamond material, which can improve the hardness and wear resistance of the blade, thereby extending the service life of the blade. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram showing the disassembled structure of the limiting disc and the long rod screw of this utility model;

[0021] Figure 4 This is a schematic diagram showing the disassembled structure of the blade and the cutting head in this utility model;

[0022] Figure 5 This is a cross-sectional structural diagram of the cutter head in this utility model.

[0023] In the diagram: 1. Blade holder, 2. Blade head, 3. Anti-loosening assembly, 31. Mounting slot, 32. Blade, 33. First fastening screw, 34. Strip block, 35. Strip groove, 36. Compression spring, 4. Limiting assembly, 41. Limiting disc, 42. Long rod screw, 43. Slide groove, 44. Slider, 45. Rectangular groove, 46. Scale line. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0025] like Figures 1 to 5 As shown, a diamond end mill with anti-loosening capability includes a shank 1 and a cutter head 2 fixedly connected to the bottom end of the shank 1.

[0026] The bottom surface of the cutter head 2 is provided with an anti-loosening and disassembly assembly 3. The anti-loosening and disassembly assembly 3 includes a mounting groove 31 opened on the bottom surface of the cutter head 2, a cutting blade 32 inserted into the mounting groove 31, and a first fastening screw 33 inserted into the surface of the cutter head 2 and the cutting blade 32. The cutting blade 32 is detachably connected to the cutter head 2 through the first fastening screw 33. When the cutting blade 32 is severely worn or damaged, the user can easily remove the old cutting blade 32 from the surface of the cutter head 2 and replace it with a new one without replacing the entire milling cutter, thus saving costs.

[0027] The surface of the tool holder 1 is provided with a limiting component 4. The limiting component 4 includes a limiting disk 41 that is slidably sleeved on the surface of the tool holder 1 and a long screw 42 inserted into the surface of the limiting disk 41. The limiting disk 41 is connected to the tool holder 1 through the long screw 42, which can accurately control the depth of the milling cutter entering the workpiece. When performing high-precision machining, it can ensure the accuracy of the machining dimensions and produce products that meet strict tolerance requirements. Example 2

[0028] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0029] The blade 32 is made of diamond material and its surface is coated with a CVD coating, which can improve the hardness and wear resistance of the blade 32, thereby extending the service life of the blade 32.

[0030] The bottom surface of the cutter head 2 has a strip groove 35 that communicates with the mounting groove 31. A strip block 34 is fixedly connected to the surface of the blade 32. The size of the strip block 34 is adapted to the strip groove 35. Compression springs 36 are equidistantly arranged in the strip groove 35. The compression springs 36 are fixedly connected to the cutter head 2. Through the cooperation of the first fastening screw 33 and the compression spring 36, the blade 32 is always subjected to the outward pushing force of the compression spring 36 when it is fixed, thereby making the connection between the first fastening screw 33, the blade 32 and the cutter head 2 tighter.

[0031] There are two sets of first fastening screws 33, with three screws in each set, arranged in a triangular pattern. The triangular arrangement of the two sets of first fastening screws 33 can apply a uniform fastening force to the insert 32 from multiple directions, making the insert 32 firmly fixed on the surface of the cutter head 2. During milling, the tool will be subjected to cutting forces and vibrations in various directions. This stable fixing method can effectively prevent the insert 32 from loosening or shifting. Example 3

[0032] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0033] The surface of the tool holder 1 is symmetrically provided with sliding grooves 43, and the inner surface of the limiting disk 41 is symmetrically fixedly connected with sliders 44. The sliders 44 are inserted into the sliding grooves 43 and are slidably connected to the tool holder 1, which can limit the movement trajectory of the limiting disk 41.

[0034] A rectangular groove 45 is provided on the surface of the tool holder 1. The long rod screw 42 extends to the surface of the rectangular groove 45 and abuts against the tool holder 1. By setting the rectangular groove 45, the contact area between the end of the long rod screw 42 and the surface of the tool holder 1 is increased, thereby improving the relative firmness of the position of the limiting plate 41.

[0035] The surface of the tool holder 1 is fixedly provided with a scale line 46 on one side of the rectangular groove 45, which can intuitively and accurately control the milling depth of the milling cutter.

[0036] Working principle: When using this type of diamond end mill to process a workpiece, first connect the tool holder 1 to the machine tool connector, and then adjust the milling depth of the end mill according to the actual milling requirements;

[0037] During adjustment, the operator loosens the long screw 42 so that it no longer abuts against the tool holder 1. At this time, the operator can control the limit plate 41 to move up and down on the surface of the tool holder 1. The position of the limit plate 41 can be visually determined through the scale line 46. Then, the operator tightens the long screw 42 so that it abuts against the surface of the tool holder 1, thereby completing the adjustment of the position of the limit plate 41. Then, the workpiece can be milled.

[0038] During machining, when the insert 32 is severely worn, it needs to be replaced to ensure the milling quality of the workpiece. At this point, stop the milling cutter from rotating, remove it, and unscrew the first fastening screws 33 on both sides to remove the old insert 32. Then, using the positioning action of the strip block 34, quickly insert the new insert 32 into the corresponding positions in the mounting slot 31 and strip groove 35. During this process, the operator applies pressure to the insert 32, keeping the compression spring 36 in a compressed state and ensuring that the insert 32 aligns perfectly with the threaded holes on the cutter head 2 surface. Next, the first fastening screw 33 is screwed into the insert 32 and the cutter head 2 to fix the insert 32. Through the cooperation of the first fastening screw 33 and the compression spring 36, the insert 32 is always pushed outward by the compression spring 36 when it is fixed, so that the connection between the first fastening screw 33, the insert 32 and the cutter head 2 is tighter. During the milling process, the tool will be subjected to large cutting forces and vibrations. This tight connection can effectively resist these external forces and reduce the possibility of the first fastening screw loosening or falling off, thereby ensuring the stability of the insert 32 during the working process and making the milling accuracy higher.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A diamond end mill that is designed to prevent loosening, comprising a shank (1) and a cutter head (2) fixedly connected to the bottom end of the shank (1); Its features are: The bottom surface of the cutter head (2) is provided with an anti-loosening assembly (3). The anti-loosening assembly (3) includes a mounting groove (31) opened on the bottom surface of the cutter head (2), a blade (32) inserted into the mounting groove (31), and a first fastening screw (33) inserted into the surface of the cutter head (2) and the blade (32). The blade (32) is detachably connected to the cutter head (2) through the first fastening screw (33). The surface of the tool holder (1) is provided with a limiting component (4). The limiting component (4) includes a limiting disc (41) slidably sleeved on the surface of the tool holder (1) and a long rod screw (42) inserted into the surface of the limiting disc (41). The limiting disc (41) is connected to the tool holder (1) through the long rod screw (42).

2. The anti-loosening diamond end mill according to claim 1, characterized in that: The blade (32) is made of diamond material and its surface is coated with a CVD coating.

3. The anti-loosening diamond end mill according to claim 1, characterized in that: The bottom surface of the cutter head (2) is provided with a strip groove (35) that communicates with the mounting groove (31). A strip block (34) is fixedly connected to the surface of the blade (32). The size of the strip block (34) is adapted to the strip groove (35). Compression springs (36) are equidistantly arranged in the strip groove (35). The compression springs (36) are fixedly connected to the cutter head (2).

4. The anti-loosening diamond end mill according to claim 1, characterized in that: The first fastening screw (33) is provided in two groups, and each group has three screws, which are arranged in a triangular pattern.

5. The anti-loosening diamond end mill according to claim 1, characterized in that: The surface of the tool holder (1) is symmetrically provided with a sliding groove (43), and the inner surface of the limiting plate (41) is symmetrically fixedly connected with a slider (44). The slider (44) is inserted into the sliding groove (43), and the slider (44) and the tool holder (1) are slidably connected.

6. The anti-loosening diamond end mill according to claim 1, characterized in that: The surface of the tool holder (1) is provided with a rectangular groove (45), and the long rod screw (42) extends to the surface of the rectangular groove (45) and abuts against the tool holder (1).

7. The anti-loosening diamond end mill according to claim 6, characterized in that: The surface of the tool holder (1) is fixedly provided with a scale line (46) on one side of the rectangular groove (45).

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