Metal ceramic milling cutter capable of preventing chips from sticking

Abstract

The utility model provides an anti-chip-sticking metal ceramic milling cutter. The anti-chip-sticking metal ceramic milling cutter comprises a connecting column, the knife handle is arranged in the connecting column; the tool bit is arranged at one end of the tool handle, a chip removal groove is formed in a chip cutting part of the tool bit, and the tool handle and the tool bit are made of metal ceramic materials. The threaded rod is rotated to drive the conical block to move upwards, so that the threaded rod is separated from the screw hole, at the moment, the trapezoidal block is reset through the spring, the fixing rod is separated from the inserting hole, and then the extending length of the tool bit can be adjusted; and meanwhile, the conical block moves downwards to extrude the trapezoidal block and the fixing rod to move and compress the spring, so that the fixing rod extends into the insertion hole, and the cutter handle is fixed through the threaded rod and the fixing rod, so that the effect of adjusting the overall length of the milling cutter according to use requirements is achieved, and the use flexibility, applicability and efficiency of the milling cutter are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, and in particular to a non-sticky metal-ceramic milling cutter. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. During operation, the cutting teeth sequentially and intermittently remove the excess material from the workpiece. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces.

[0003] A known authorized patent with application number CN202022383209.4 discloses an anti-adhesion spiral end mill. Its background art addresses the problem that "when milling some highly viscous components, the milling debris may stick to the chip removal groove, or even block it, causing inconvenience in chip removal and affecting subsequent processing." The technical solution to this problem is: "It includes an end mill and a scraper. The end mill includes an end mill head and an end mill shank. Cutting edges are evenly distributed along the circumference of the end mill head, extending from the end of the end mill head towards the end mill shank. Simultaneously, the cutting edges are spirally arranged in a left-handed manner, and chip removal grooves adapted to the curvature of the cutting edges are provided between adjacent cutting edges."

[0004] However, the following problems were found in the implementation of the relevant technology: Although the provided technical solution achieves the effect of preventing chip adhesion or blockage of the chip removal groove, it is not convenient to adjust the length of the milling cutter according to the usage requirements. The length of the milling cutter is fixed, which cannot adapt to the processing of workpieces with different thicknesses and heights. It is also necessary to frequently change milling cutters of different sizes, which is inconvenient to use, thus reducing the flexibility, applicability and efficiency of milling cutter processing. Utility Model Content

[0005] To address the aforementioned problems, this utility model proposes an anti-chip-sticking metal-ceramic end mill, which solves the problem in the prior art where it is inconvenient to adjust the length of the end mill according to usage requirements.

[0006] To achieve the above objectives, the present invention provides an anti-chip-sticking metal-ceramic end mill, comprising: a connecting post with an internal cavity; a tool holder disposed within the connecting post; a cutting head disposed at one end of the tool holder, wherein a chip removal groove is formed on the chip-cutting portion of the cutting head, and the tool holder and the cutting head are made of metal-ceramic material; a protective mechanism disposed between the tool holder and the cutting head to prevent the cutting head from colliding with the machine tool; a guide groove formed on the surface of the tool holder, wherein two sets of insertion holes are symmetrically formed on both sides of the guide groove; a guide block fixedly installed on the inner wall of the connecting post and sliding with the guide groove; a fixing rod passing through and sliding on both sides of the inner wall of the guide block and inserted into the insertion holes; and an operating mechanism disposed within the guide block and connected to the fixing rod, wherein the fixing rod is moved by the operating mechanism to extend into or extend out of the insertion holes.

[0007] Furthermore, the inner wall of the chip removal groove is coated with an antistatic coating, and the guide groove extends to one end of the tool holder.

[0008] Furthermore, the operating mechanism includes a trapezoidal block fixedly connected to the end of the fixed rod, a spring sleeved on the surface of the fixed rod, a threaded rod threadedly connected to the connecting column, and a conical block rotatably connected to the surface of the threaded rod. The two ends of the spring are respectively connected to the guide block and the trapezoidal block. The inner wall of the guide groove is provided with multiple threaded holes. The bottom end of the threaded rod passes through the guide block and is threadedly connected to the guide block. The bottom end of the threaded rod is screwed into the threaded hole.

[0009] Furthermore, the protective mechanism includes a threaded interface at the opposite ends of the handle and the blade head, a prefabricated post threaded into the threaded interface, a fracture crack on the surface of the prefabricated post, and an anti-dislodgement component jointly provided on the handle and the blade head to prevent the blade head from colliding and splashing.

[0010] The anti-detachment component includes two retaining rings that are threaded onto the surfaces of the handle and the blade head, respectively, and a rubber sleeve that is fixedly installed between the opposing surfaces of the two retaining rings.

[0011] Furthermore, a threaded connecting ring is fixedly installed on the surface of the cutter head, and the surface of the threaded connecting ring is threadedly connected to the protective cylinder. The surface of the protective cylinder is provided with multiple anti-slip grooves in the form of an annulus.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention adjusts the length of the milling cutter by rotating the threaded rod, which moves the conical block upward, separating the threaded rod from the threaded hole. At this time, the trapezoidal block is reset by the spring, separating the fixed rod from the insertion hole, allowing adjustment of the cutter head extension length. After adjusting to the appropriate length, the threaded rod is reversed, moving the conical block downward, causing the threaded rod to be screwed into the corresponding threaded hole. Simultaneously, the downward movement of the conical block compresses the trapezoidal block and the fixed rod, compressing the spring and causing the fixed rod to extend into the insertion hole. The threaded rod and the fixed rod then fix the cutter shank. Therefore, this invention achieves the effect of adjusting the overall length of the milling cutter according to usage requirements, making it easy to adapt to workpieces of different thicknesses and heights. The operation is simple and convenient, avoiding frequent cutter replacements, reducing replacement time, and effectively improving the flexibility, applicability, and efficiency of the milling cutter.

[0014] When a tool tip collidees with another tool, this invention utilizes a fracture crack to quickly separate the tool tip from the tool holder, preventing the impact of the collision force on the machine tool. Simultaneously, the rubber sleeve, combined with the retaining ring, pulls and restrains the tool tip, preventing it from flying off and injuring personnel, thus effectively improving machining safety.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural schematic diagram of the connecting column of this utility model;

[0019] Figure 4 This is a cross-sectional structural schematic diagram of the guide block of this utility model;

[0020] Figure 5 This is a partial structural schematic diagram of the knife handle of this utility model;

[0021] Figure 6 This is a partial structural diagram of the blade of this utility model.

[0022] In the diagram: 1. Connecting post; 2. Tool holder; 3. Tool head; 4. Guide groove; 5. Guide block; 6. Fixing rod; 7. Trapezoidal block; 8. Spring; 9. Threaded rod; 10. Conical block; 11. Threaded hole; 12. Precast post; 13. Fracture crack; 14. Fixing ring; 15. Rubber sleeve; 16. Threaded connecting ring; 17. Protective sleeve. Detailed Implementation

[0023] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, specific embodiments of this utility model are now described with reference to the accompanying drawings. However, the scope of protection of this utility model is not limited to the following description. Example

[0024] Reference Figure 1-6 As shown, the anti-chip sticking metal-ceramic end mill includes: a connecting post 1 with an internal cavity; a tool holder 2 disposed within the connecting post 1; a cutting head 3 disposed at one end of the tool holder 2, the cutting part of the cutting head 3 having a chip removal groove, the tool holder 2 and the cutting head 3 being made of metal-ceramic material; a protective mechanism disposed between the tool holder 2 and the cutting head 3 to prevent the cutting head 3 from colliding with the machine tool; a guide groove 4 disposed on the surface of the tool holder 2, the guide groove 4 having two sets of insertion holes symmetrically disposed on both sides of its interior; a guide block 5 fixedly installed on the inner wall of the connecting post 1 and sliding with the guide groove 4, wherein the guide block 5 has an internal cavity; a fixing rod 6 passing through and sliding on both sides of the inner wall of the guide block 5 and inserted into the insertion holes; and an operating mechanism disposed within the guide block 5 and connected to the fixing rod 6, the fixing rod 6 being moved by the operating mechanism to extend into or extend out of the insertion holes.

[0025] The inner wall of the chip removal groove is coated with an antistatic coating, and the guide groove 4 extends to one end of the tool holder 2.

[0026] The operating mechanism includes a trapezoidal block 7 fixedly connected to the end of the fixed rod 6, a spring 8 sleeved on the surface of the fixed rod 6, a threaded rod 9 threadedly connected to the connecting column 1, and a conical block 10 rotatably connected to the surface of the threaded rod 9. The two ends of the spring 8 are respectively connected to the guide block 5 and the trapezoidal block 7. The inner wall of the guide groove 4 is provided with multiple screw holes 11. The bottom end of the threaded rod 9 passes through the guide block 5 and is threadedly connected to the guide block 5. The bottom end of the threaded rod 9 is screwed into the screw hole 11.

[0027] The technical solution provided in this embodiment is as follows: During use, by connecting the connecting column 1 to the machine tool, the cutter head 3 can perform cutting operations. During this process, chips can be discharged through the chip removal groove. Simultaneously, the anti-static coating prevents chips from adhering to the chip removal groove due to static electricity generated during milling, ensuring the chip removal effect of the chip removal groove. When adjusting the milling cutter length as needed, rotating the threaded rod 9 moves the conical block 10 upwards, separating the threaded rod 9 from the threaded hole 11. At this time, the compressive force on the trapezoidal block 7 disappears, and the elastic force of the spring 8 drives the trapezoidal block 7 and the fixing rod 6 to reset, separating the fixing rod 6 from the insertion hole. Then, moving the cutter head 3 or the connecting column 1 allows the guide block 5 to slide within the guide groove 4, thus adjusting the extension length of the cutter head 3. After adjusting to the appropriate length, the reverse threaded rod 9 drives the conical block 10 downwards, causing the threaded rod 9 to be screwed into the corresponding threaded hole 11. At the same time, it drives the conical block 10 downwards, so that the conical block 10 contacts and engages with the inclined surface of the trapezoidal block 7. This squeezes and pushes the trapezoidal blocks 7 and the fixing rod 6 on both sides to move and compress the spring 8, causing the fixing rod 6 to extend into the insertion hole. Then, the double locking of the threaded rod 9 and the fixing rod 6 can stably fix the tool holder 2 and the connecting column 1, preventing the milling cutter from shifting during processing. Therefore, the overall length of the milling cutter can be adjusted according to the usage requirements, which is convenient to adapt to workpieces of different thicknesses and heights. The operation is simple and convenient, avoiding frequent changes of the milling cutter, reducing the time spent on changes, and effectively improving the flexibility, applicability and efficiency of the milling cutter.

[0028] Preferably, the protective mechanism includes a threaded interface at the opposite ends of the handle 2 and the cutter head 3, a precast post 12 threaded into the threaded interface, a fracture crack 13 on the surface of the precast post 12, and an anti-dislodgement component provided on both the handle 2 and the cutter head 3 to prevent the cutter head 3 from colliding and splashing.

[0029] The anti-detachment component includes two retaining rings 14 that are threaded onto the surfaces of the handle 2 and the blade head 3, respectively, and a rubber sleeve 15 that is fixedly installed between the opposing surfaces of the two retaining rings 14.

[0030] Specifically, during the milling process, when the cutter head 3 is squeezed against the workpiece and bends due to impact, the precast column 12 can be split in two by the action of the fracture crack 13, thereby quickly separating the cutter head 3 from the cutter holder 2. This prevents the force generated by the impact from being transmitted to the machine tool and causing an impact. At the same time, the rubber sleeve 15 and the fixing ring 14 pull and restrain the cutter head 3, which can prevent the cutter head 3 from flying and causing injury to personnel, effectively improving the safety of milling cutter use. Example

[0031] Based on Embodiment 1, in this embodiment: a threaded connecting ring 16 is fixedly installed on the surface of the cutter head 3, the surface of the threaded connecting ring 16 is threadedly connected to the protective cylinder 17, and the surface of the protective cylinder 17 is provided with multiple anti-slip grooves in the form of a ring.

[0032] The technical solution provided in this embodiment is as follows: by connecting the protective cylinder 17 to the threaded connecting ring 16, the cutter head 3 can be protected when not in use, so as to prevent the cutter head 3 from accidentally cutting people and to prevent the cutter head 3 from being exposed to the outside and corroding due to contact with moisture in the air, which helps to extend the service life of the cutter head 3.

[0033] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A chip-resistant metal-ceramic end mill, characterized in that, include: Connecting column with internal cavity (1); The tool holder (2) is located inside the connecting post (1); The cutting head (3) is located at one end of the handle (2), and the cutting part of the cutting head (3) is provided with a chip discharge groove. The handle (2) and the cutting head (3) are made of metal-ceramic material. A protective mechanism located between the tool holder (2) and the tool head (3) to prevent the tool head (3) from hitting the tool and affecting the machine tool; A guide groove (4) is formed on the surface of the tool holder (2), and two sets of insertion holes are symmetrically formed on both sides of the inside of the guide groove (4); A guide block (5) is fixedly installed on the inner wall of the connecting column (1) and slides with the guide groove (4); A fixed rod (6) that slides through both sides of the inner wall of the guide block (5) and is inserted into the socket; And an operating mechanism located inside the guide block (5) and connected to the fixing rod (6), wherein the fixing rod (6) is moved by the operating mechanism to extend into or out of the insertion hole.

2. The anti-chip sticking metal-ceramic end mill according to claim 1, characterized in that: The inner wall of the chip removal groove is coated with an antistatic coating, and the guide groove (4) extends to one end of the handle (2).

3. The anti-chip sticking metal-ceramic end mill according to claim 1, characterized in that: The operating mechanism includes a trapezoidal block (7) fixedly connected to the end of the fixed rod (6), a spring (8) sleeved on the surface of the fixed rod (6), a threaded rod (9) threaded through and threaded onto the connecting column (1), and a conical block (10) rotatably connected to the surface of the threaded rod (9). The two ends of the spring (8) are respectively connected to the guide block (5) and the trapezoidal block (7). The inner wall of the guide groove (4) is provided with multiple screw holes (11). The bottom end of the threaded rod (9) passes through the guide block (5) and is threadedly connected to the guide block (5). The bottom end of the threaded rod (9) is screwed into the screw hole (11).

4. The anti-chip sticking metal-ceramic end mill according to claim 1, characterized in that: The protective mechanism includes a threaded interface at the opposite ends of the handle (2) and the cutter head (3), a precast post (12) threaded into the threaded interface, a fracture crack (13) on the surface of the precast post (12), and an anti-detachment component provided on the handle (2) and the cutter head (3) to prevent the cutter head (3) from colliding and splashing.

5. The anti-chip sticking metal-ceramic end mill according to claim 4, characterized in that: The anti-detachment component includes two fixing rings (14) that are threaded onto the surfaces of the handle (2) and the blade (3), respectively, and a rubber sleeve (15) that is fixedly installed between the opposite surfaces of the two fixing rings (14).

6. The anti-chip sticking metal-ceramic end mill according to claim 1, characterized in that: A threaded connecting ring (16) is fixedly installed on the surface of the cutter head (3). The surface of the threaded connecting ring (16) is threadedly connected to the protective cylinder (17). The surface of the protective cylinder (17) is provided with multiple anti-slip grooves in the form of a ring.

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