Milling cutter with customized outer diameter

Abstract

The utility model relates to the technical field of CNC (computer numerical control) machining, and discloses a milling cutter with customized outer diameter, which comprises a conical column and a cutter holder, the bottom end of the conical column is fixedly connected with a limit ring, the bottom end of the limit ring is fixedly connected with an inner hexagonal fastening sleeve, the outer wall of the inner hexagonal fastening sleeve is equidistantly provided with a plurality of redundant grooves, and the redundant grooves are fixedly connected with the cutter holder. A hexagonal fixing column is fixedly connected to the top end of the tool holder, a fastening ring is in threaded connection with the outer wall of an inner hexagonal fastening sleeve, a blade groove is formed in the bottom end of the tool holder, a tool body is arranged on the inner wall of the blade groove, and a plurality of fixing bolts are arranged on the right side of the blade groove and the right side of the tool body in a penetrating mode. According to the milling cutter, the cutter body is designed to be the three-face cutter body, three-face milling can be carried out under the condition that different cutter bodies are not replaced in the milling process, the machining efficiency is remarkably improved, and due to the fact that the milling cutter does not need to be replaced, the machine tool shutdown time is shortened, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, and in particular to a milling cutter with a customized outer diameter. Background Technology

[0002] A milling cutter is a rotary tool used for cutting and machining, widely used in metalworking, woodworking, and other material processing. Milling cutters are typically made of high-speed steel or cemented carbide, and their main function is to remove material from a workpiece through rotary motion, thereby shaping it into the desired form and size.

[0003] A search revealed a Chinese patent publication number: CN217253132U, which describes a multi-blade PCD precision milling cutter for valve body forming contours. The cutter includes a shank, a tool mounting base fixed to the outer side of the shank, a cold precision reamer mounting hole on the outer side of the tool mounting base, and a first cold precision reamer mounted on the outer side of the tool mounting base. This invention allows for single-stage processing of the feed end, simplifying operation and facilitating rapid forming of the valve body's feed end. It improves hole wall roughness, ensures consistent dimensional contours, and promotes smooth chip removal while cooling the tool tip, maintaining stable machining quality of the product's inner hole. The invention includes a stabilizing mechanism for easy fixing of the mounting sleeve to the shank. The mounting sleeve enhances the protection of the outer connection part of the shank, providing auxiliary reinforcement and protection for the shank mounting area, preventing issues affecting installation stability and accuracy, and extending the device's service life. However, when machining four-way valve bodies, this milling cutter requires multiple cutter replacements and machine tool shutdowns, which can increase worker fatigue due to prolonged repetitive operations. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a milling cutter with a customized outer diameter, which aims to improve the problem that when machining four-way valve bodies, the milling cutter needs to be changed multiple times and the machine tool needs to be stopped, which increases the labor intensity and fatigue of workers due to long-term repetitive operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a milling cutter with a customized outer diameter, comprising a tapered column and a handle, wherein a limiting ring is fixedly connected to the bottom end of the tapered column, and an internal hexagonal fastening sleeve is fixedly connected to the bottom end of the limiting ring, wherein multiple redundant slots are equidistantly formed on the outer wall of the internal hexagonal fastening sleeve, a hexagonal fixing post is fixedly connected to the top end of the handle, and a fastening ring is threadedly connected to the outer wall of the internal hexagonal fastening sleeve, a cutting tool groove is formed at the bottom end of the handle, and a cutting tool body is provided on the inner wall of the cutting tool groove, wherein multiple fixing bolts are passed through the right side of both the cutting tool groove and the cutting tool body, and a two-piece grease sealing device is provided on the lower front side of the tapered column.

[0006] The above technical solution uses a fastening ring to tighten the internal hexagonal fastening sleeve and the hexagonal fixing post at the top of the cutter handle, thus achieving a tight connection between the milling cutter and the upper end. During the cutting process, the cutter body has a three-sided design, which can perform three-sided milling without changing different cutter bodies, significantly improving processing efficiency. Since there is no need to change the milling cutter, it reduces machine tool downtime and the labor intensity of operators, thereby achieving efficient and precise processing.

[0007] As a further description of the above technical solution:

[0008] The one-to-two grease sealing device includes an oil inlet, and the inner top wall of the internal hexagonal fastening sleeve is connected to an annular conduit. The bottom end of the annular conduit is connected to a diverter pipe, and the bottom end of the diverter pipe is connected to two rubber valves. The bottom ends of the two rubber valves are connected to multiple oil outlets.

[0009] The above technical solution involves introducing grease into an annular conduit through the inlet. The annular conduit will generate a certain elasticity when the internal hexagonal fastening sleeve and hexagonal fixing post separate, making it easier to disassemble. Then, the shunt pipe divides the grease into two paths, which are supplied to two rubber valves respectively. The flow rate is controlled by the rubber valves and finally flows out from the outlet to achieve the best lubrication effect, thereby avoiding blade corrosion caused by long-term operation.

[0010] As a further description of the above technical solution:

[0011] The top of the conical column is rotatably connected to a pivot.

[0012] Through the above technical solution: the rotating shaft is a key component connecting the tapered column and the extension column. It allows the extension column and the components fixed on it to rotate to achieve cutting and machining operations.

[0013] As a further description of the above technical solution:

[0014] An extension column is fixedly connected to the middle of the top end of the rotating shaft, and a fixed ball is fixedly connected to the top end of the extension column.

[0015] The above technical solution uses a fixed ball at the top of the extension column as the mounting point for the milling cutter's cutting part, serving as a fixed interface between the milling cutter and the machine tool.

[0016] As a further description of the above technical solution:

[0017] A ring lock is fixedly connected to the middle of the outer wall of the conical column, and the ring lock has an engagement groove on the right side of the conical column.

[0018] Through the above technical solution: the locking groove is a matching structure of the ring lock, which is a connecting part between the machine tool and the machine tool, and at the same time ensures that the milling cutter remains stable and accurate during operation.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the fastening ring has multiple rotating grooves at equal intervals at its bottom end.

[0021] The above technical solution allows users to easily tighten or loosen the fastening ring by hand or with tools, which helps to adjust and fix the position of the internal hexagonal fastening sleeve and the hexagonal fixing post, ensuring that they can maintain a stable state during use.

[0022] As a further description of the above technical solution:

[0023] A sheath is provided at the bottom of the blade.

[0024] Through the above technical solution, the sheath helps protect the blade, preventing damage or contamination when not in use or stored, while maintaining the blade's sharpness and extending its service life.

[0025] As a further description of the above technical solution:

[0026] Bolt holes are provided at both the front and rear ends of the right side of the knife handle.

[0027] The above technical solution allows the bolt hole to partially fix the nut in the fixing bolt to the tool holder, ensuring that the milling cutter can be stably installed in the required position.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the internal hexagonal fastening sleeve is tightened with the hexagonal fixing post at the top of the tool holder by using a fastening ring, thus achieving a tight connection between the milling cutter and the upper end. During the cutting process, the tool body is designed with three sides, which can perform three-sided milling without changing different tool bodies, significantly improving the processing efficiency. Since there is no need to change the milling cutter, the machine tool downtime and the labor intensity of the operator are reduced, thereby achieving efficient and accurate processing.

[0030] 2. In this utility model, grease is introduced into the annular conduit through the oil inlet. The annular conduit will generate a certain elasticity when the internal hexagonal fastening sleeve and the hexagonal fixing post are separated, making it easier to disassemble. Then, the diversion pipe divides the grease into two paths, which are supplied to two rubber valves respectively. The flow rate is controlled by the rubber valves and finally flows out from the oil outlet to achieve the best lubrication effect, thereby avoiding blade corrosion caused by long-term work. Attached Figure Description

[0031] Figure 1 This is a front view of a milling cutter with a customized outer diameter proposed in this utility model;

[0032] Figure 2A perspective view of a milling cutter with a customized outer diameter proposed in this utility model;

[0033] Figure 3 This is a structural exploded view of a milling cutter with a customized outer diameter proposed in this utility model.

[0034] Legend:

[0035] 1. Conical column; 2. One-to-two grease sealing device; 201. Oil inlet; 202. Annular guide tube; 203. Diverter pipe; 204. Rubber valve; 205. Oil outlet; 3. Limiting ring; 4. Hexagonal socket head cap sleeve; 5. Redundancy groove; 6. Tool handle; 7. Hexagonal fixing post; 8. Fastening ring; 9. Blade groove; 10. Tool body; 11. Fixing bolt; 12. Rotating shaft; 13. Extension post; 14. Fixing ball; 15. Annular lock; 16. Engaging groove; 17. Tightening groove; 18. Tool sleeve; 19. Bolt hole. Detailed Implementation

[0036] 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.

[0037] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides: a milling cutter with a customized outer diameter, including a tapered column 1 and a handle 6. A limiting ring 3 is fixedly connected to the bottom end of the tapered column 1. An internal hexagonal fastening sleeve 4 is fixedly connected to the bottom end of the limiting ring 3. Multiple redundant grooves 5 are equidistantly opened on the outer wall of the internal hexagonal fastening sleeve 4. A hexagonal fixing post 7 is fixedly connected to the top end of the handle 6. A fastening ring 8 is threadedly connected to the outer wall of the internal hexagonal fastening sleeve 4. A blade groove 9 is opened at the bottom end of the handle 6. A blade body 10 is provided on the inner wall of the blade groove 9. Multiple fixing bolts 11 are shot through the right side of both the blade groove 9 and the blade body 10. A two-stage grease sealing device 2 is provided on the lower middle part of the front side of the tapered column 1.

[0038] Specifically, the tapered column 1 serves as the main body of the end mill. Its tapered shape design ensures stability during machining. The limiting ring 3 at its bottom not only strengthens the overall structural strength of the end mill but also ensures its stability during high-speed rotation. The internal hexagonal fastening sleeve 4, through its cooperation with the hexagonal fixing post 7 at the top of the handle 6, achieves a secure connection between the end mill and the upper part. In addition, the multiple redundant grooves 5 on the outer wall of the internal hexagonal fastening sleeve 4 provide a certain degree of elastic buffering during the fastening process, ensuring the tightness and stability of the connection. The fastening ring 8, through its threaded connection with the outer wall of the internal hexagonal fastening sleeve 4, further enhances the connection stability between the end mill and the machine tool. Qualitatively, during the cutting process, the retaining ring 8 effectively prevents loosening caused by vibration or impact, ensuring stable cutting by the milling cutter. The design of the insert groove 9 and the cutter body 10 is key to realizing the cutting function of the milling cutter. The insert groove 9 is customized according to the processing requirements and can accurately accommodate the cutter body 10. The cutter body 10 is fastened by the fixing bolts 11 that pass through the insert groove 9 and the right side of the cutter body 10. At the same time, the cutter body 10 is a three-sided cutter body 10, which can perform three-sided milling without changing different cutter bodies 10, significantly improving processing efficiency. Since there is no need to change the milling cutter, the machine tool downtime and the labor intensity of the operator are reduced, thereby achieving efficient and accurate processing.

[0039] Refer to Figure 2 and Figure 3 The one-to-two grease sealing device 2 includes an oil inlet 201, an annular conduit 202 is connected to the inner top wall of the internal hexagonal fastening sleeve 4, a diversion pipe 203 is connected to the bottom end of the annular conduit 202, two rubber valves 204 are connected to the bottom end of the diversion pipe 203, and multiple oil outlets 205 are connected to the bottom end of the two rubber valves 204.

[0040] Specifically, grease is introduced into the device through inlet 201, which is connected to the inner top wall of the internal hexagonal fastener 4. This not only facilitates installation and maintenance but also effectively prevents grease leakage during milling. After the grease enters the annular conduit 202, the annular conduit 202 will have a certain elasticity when it separates the internal hexagonal fastener 4 and the hexagonal fixing post 7, making it easier to disassemble. Then, the grease flows from the annular conduit 202 into the diversion pipe 203. The diversion pipe 203 divides the grease into two paths, supplying two rubber valves 204 respectively. This design achieves a one-to-two function, that is, it allows for two separate supply lines. Through an oil inlet 201 and a piping system, the lubrication needs of two points are met simultaneously. The rubber valve 204, as a control element, can adjust the flow rate of grease according to the rotation speed of the cutter handle 6. When the end mill needs more lubrication, the rubber valve 204 will open more, increasing the supply of grease. The grease is delivered to the lubrication points of the end mill through the oil outlet 205. The oil outlet 205 ensures that the grease can accurately reach each part that needs lubrication. At the same time, the number and distribution of the oil outlets 205 are also optimized according to the structure and usage characteristics of the end mill to achieve the best lubrication effect, thereby avoiding corrosion of the cutter body 10 due to long-term operation.

[0041] Reference Figure 1 A rotating shaft 12 is rotatably connected to the top of the conical column 1; an extension column 13 is fixedly connected to the middle of the top of the rotating shaft 12, and a fixed ball 14 is fixedly connected to the top of the extension column 13; a ring lock 15 is fixedly connected to the middle of the outer wall of the conical column 1, and a locking groove 16 is provided between the ring lock 15 and the right side of the conical column 1.

[0042] Specifically, the rotating shaft 12 is a key component connecting the tapered column 1 and the extension column 13. It allows the extension column 13 and the components fixed thereon to rotate to achieve cutting and machining operations. The fixed ball 14 is the mounting point for the cutting part of the milling cutter and is used as a fixed interface with the machine tool. The locking groove 16 is a matching structure of the ring lock 15 and is a connecting part with the machine tool, while ensuring that the milling cutter remains stable and accurate during operation.

[0043] Reference Figure 2 Multiple screwing grooves 17 are equidistantly provided on the bottom of the outer wall of the fastening ring 8; a blade sleeve 18 is provided at the bottom of the blade body 10; bolt holes 19 are provided at both the front and rear ends of the right side of the handle 6.

[0044] Specifically, the tightening groove 17 is located at the bottom of the outer wall of the fastening ring 8, allowing the user to easily tighten or loosen the fastening ring 8 by hand or with tools. This helps to adjust and fix the position of the internal hexagonal fastening sleeve 4 and the hexagonal fixing post 7, ensuring that they can maintain a stable state during use. The tool sleeve 18 helps to protect the tool body 10 from damage or contamination when not in use or stored, while maintaining the sharpness of the tool body 10 and extending its service life. The bolt hole 19 can partially fix the nut in the fixing bolt 11 to the tool handle 6, ensuring that the milling cutter can be securely installed in the required position.

[0045] Working principle: The tapered column 1 serves as the main body of the end mill. Its tapered shape design ensures stability during machining. The limiting ring 3 at its bottom not only strengthens the overall structural strength of the end mill but also ensures its stability during high-speed rotation. The internal hexagonal fastening sleeve 4, through its cooperation with the hexagonal fixing post 7 at the top of the handle 6, achieves a tight connection between the end mill and the upper part. In addition, the multiple redundant grooves 5 on the outer wall of the internal hexagonal fastening sleeve 4 provide a certain degree of elastic buffering during the fastening process, ensuring the tightness and stability of the connection. The fastening ring 8, through its interaction with the internal hexagonal fastening sleeve... The external threaded connection of 4 further enhances the connection stability between the milling cutter and the machine tool. During the cutting process, the fastening ring 8 can effectively prevent loosening caused by vibration or impact, ensuring stable cutting of the milling cutter. The design of the insert groove 9 and the cutter body 10 is the key to realizing the cutting function of the milling cutter. The insert groove 9 is customized according to the processing requirements and can accurately accommodate the cutter body 10. The cutter body 10 is fastened by the fixing bolt 11 that passes through the insert groove 9 and the right side of the cutter body 10. At the same time, the cutter body 10 is a three-sided cutter body 10, which can perform three-sided milling without changing different cutter bodies 10.

[0046] Furthermore, grease is introduced into the device through the inlet 201, which is connected to the inner top wall of the internal hexagonal fastener 4. This not only facilitates installation and maintenance but also effectively prevents grease leakage during milling. After the grease enters the annular conduit 202, the annular conduit 202 will have a certain elasticity when it separates the internal hexagonal fastener 4 and the hexagonal fixing post 7, making it easier to disassemble. Then, the grease flows from the annular conduit 202 into the diversion pipe 203. The diversion pipe 203 divides the grease into two paths, supplying them to the two rubber valves 204 respectively. This design achieves a dual-function, meaning that through one oil inlet 201 and one piping system, it simultaneously meets the lubrication needs of two points. The rubber valve 204, as a control element, can adjust the grease flow rate according to the rotation speed of the cutter handle 6. When the end mill needs more lubrication, the rubber valve 204 will open more, increasing the grease supply. The grease is delivered to the lubrication points of the end mill through the oil outlet 205. The oil outlet 205 ensures that the grease can accurately reach each part that needs lubrication. At the same time, the number and distribution of the oil outlets 205 have also been optimized according to the structure and usage characteristics of the end mill.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A milling cutter with a custom outer diameter, comprising a tapered post (1) and a tool holder (6), characterized in that: A limiting ring (3) is fixedly connected to the bottom end of the tapered column (1). An internal hexagonal fastening sleeve (4) is fixedly connected to the bottom end of the limiting ring (3). Multiple redundant grooves (5) are equidistantly opened on the outer wall of the internal hexagonal fastening sleeve (4). A hexagonal fixing post (7) is fixedly connected to the top end of the tool handle (6). A fastening ring (8) is threaded on the outer wall of the internal hexagonal fastening sleeve (4). A blade groove (9) is opened at the bottom end of the tool handle (6). A blade body (10) is provided on the inner wall of the blade groove (9). Multiple fixing bolts (11) are shot through the right side of both the blade groove (9) and the blade body (10). A two-way grease sealing device (2) is provided on the lower front side of the tapered column (1). The two-way grease sealing device (2) is used to prevent liquid from entering the blade groove (9) during processing, which would cause the blade body (10) to rust.

2. The milling cutter with a customized outer diameter according to claim 1, characterized in that: The one-to-two grease sealing device (2) includes an oil inlet (201), the inner top wall of the internal hexagonal fastening sleeve (4) is connected to an annular conduit (202), the bottom end of the annular conduit (202) is connected to a diverter pipe (203), the bottom end of the diverter pipe (203) is connected to two rubber valves (204), and the bottom ends of the two rubber valves (204) are connected to multiple oil outlets (205).

3. A milling cutter with a customized outer diameter according to claim 1, characterized in that: The top of the conical column (1) is rotatably connected to a rotating shaft (12).

4. A milling cutter with a customized outer diameter according to claim 3, characterized in that: An extension column (13) is fixedly connected to the top center of the rotating shaft (12), and a fixed ball (14) is fixedly connected to the top of the extension column (13).

5. A milling cutter with a customized outer diameter according to claim 1, characterized in that: A ring lock (15) is fixedly connected to the middle of the outer wall of the conical column (1), and the ring lock (15) and the right side of the conical column (1) are provided with a locking groove (16).

6. A milling cutter with a customized outer diameter according to claim 1, characterized in that: The outer wall bottom of the fastening ring (8) is provided with multiple rotating grooves (17) at equal intervals.

7. A milling cutter with a customized outer diameter according to claim 1, characterized in that: The blade (10) is provided with a sheath (18) at the bottom end.

8. A milling cutter with a customized outer diameter according to claim 1, characterized in that: Bolt holes (19) are provided at both the front and rear ends of the right side of the handle (6).

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