End milling cutter with extension bar for cutting
By adopting a split adjustable structure and a central air hole design, the problem of the non-adjustable length of traditional end mills is solved, enabling flexible use of the end mill and efficient chip removal, thereby improving processing efficiency and stability.
Patent Information
- Application Number
- CN202423092834.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Traditional end mills have an integrated end shank and cutter head structure, which cannot be adjusted in length according to the machining situation, resulting in poor flexibility of use and inconvenience in replacement.
It adopts a split adjustable structure, and the adjustable support length of the end mill end can be achieved by adjusting the combination of the sleeve and the end connecting column. It is also equipped with a central air hole and chip removal groove, which supports flexible replacement and efficient chip removal.
It enables flexible adjustment of the milling cutter tip and efficient chip removal, improving the cutting stability and quality of the tool.
Smart Images
Figure CN223506275U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of milling cutter technology, specifically to an end mill with an extension rod for cutting. Background Technology
[0002] Milling cutters are commonly used cutting tools for milling metal workpieces. A milling cutter has one or more cutting teeth on its upper part. During operation, the cutting teeth intermittently remove the excess material from the workpiece to achieve milling. In actual machining, milling cutters are mainly used to machine planes, steps, grooves, shaped surfaces, and cut off workpieces on milling machines. An end mill is a type of milling cutter. An end mill is a milling cutter that is machined on the top surface. It cuts the workpiece through the cutting edge on the end face and is a commonly used cutting tool for machining the end face of metal workpieces.
[0003] Since the cutting edge of an end mill is located at the end of the cutter body, the end of the cutter needs to contact the end face of the workpiece during machining. Therefore, end mills require a deeper feed rate compared to traditional cutter heads. Although traditional end mills have a longer end bar structure, the end bar and the cutter head are an integral structure, which cannot be adjusted according to the machining situation, resulting in poor flexibility of use. Furthermore, due to the integral structure, the entire tool needs to be disassembled and replaced when machining different types of end faces, which is very inconvenient. Therefore, an end mill with an extension bar is proposed. Utility Model Content
[0004] The purpose of this invention is to provide an end mill with an extended rod for cutting, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an end mill with an extension rod, comprising a milling cutter end and a tool holder mechanism, wherein the tool holder mechanism is used for connecting and installing the milling cutter end, and the tool holder mechanism includes an end connecting column, an adjusting sleeve and a gas lubrication ring seat;
[0006] The air-slip ring seat is installed on the upper part of the adjusting sleeve. An adjusting pin is provided on the upper part of the end connecting column. The end connecting column is telescopically installed on the lower part of the adjusting sleeve through the adjusting pin. A second fastening bolt is provided on the side of the adjusting sleeve. The end of the milling cutter is detachably installed on the lower part of the end connecting column.
[0007] The lower part of the milling cutter end is detachably equipped with an alloy cutting edge, the periphery of the milling cutter end is provided with a chip removal groove, and the middle part of the milling cutter end is provided with a central air hole.
[0008] Preferably, the top of the adjusting sleeve is fixed with an installation end post, the air slip ring seat is rotatably installed on the upper part of the adjusting sleeve, and the side of the air slip ring seat is provided with an air supply interface.
[0009] Preferably, the aforementioned adjusting pin is fixedly installed on the upper part of the end connecting column, and the lower part of the adjusting sleeve is provided with a pin insertion hole, and the adjusting pin is slidably fitted and inserted into the inner side of the pin insertion hole.
[0010] Preferably, the second fastening bolt is threaded to the inner side of the screw hole provided on the side of the adjusting sleeve, and the upper part of the adjusting insert is provided with limit screw holes at equal intervals. The end of the second fastening bolt passes through the adjusting sleeve and is threaded to the inner side of the limit screw hole.
[0011] Preferably, the upper part of the milling cutter end is fixed with a mounting end, the lower part of the end connecting post is provided with an end mounting hole, the mounting end is fitted and inserted into the inner side of the end mounting hole, and the outer periphery of the end connecting post is uniformly provided with first fastening bolts for locking and limiting the mounting end, and the milling cutter end is fixedly installed on the lower part of the end connecting post by the mounting end and the first fastening bolts.
[0012] Preferably, the aforementioned alloy cutting edge is provided in multiple forms, and several alloy cutting edges are uniformly fixed in a circumferential shape to the lower part of the end of the milling cutter by bolts, and the chip removal groove is provided between two adjacent alloy cutting edges.
[0013] Preferably, the aforementioned central air hole is opened through the middle of the end of the milling cutter, and air guide holes are provided in the middle of the end connecting column and the adjusting sleeve. The two ends of the air guide holes are respectively connected to the air supply interface and the central air hole.
[0014] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:
[0015] This end mill adopts a split adjustable structure. The end mill head is connected and installed via an adjusting sleeve and an end cap. The adjusting sleeve and the end cap are connected by an adjusting insert. The support length of the end mill head can be flexibly adjusted according to machining needs through telescopic adjustment and bolt limit. The structure is simple and easy to operate. The end mill head is connected and installed via an installation end cap. During use, the end mill head can be flexibly replaced according to machining needs. The adjustable end rod mounting structure allows the end mill to meet the machining requirements of different types of workpieces. A central air hole is set in the middle of the end mill head. Together with the chip removal groove on the outside of the end mill head, the cutting waste can be efficiently discharged through external air supply, and efficient heat dissipation can be provided for the cutter head, which is conducive to improving the cutting stability and quality of the tool. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall upper three-dimensional structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the overall lower three-dimensional structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the overall disassembled upper structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the overall disassembled lower structure of this utility model;
[0021] Figure 5 This is a three-dimensional structural diagram of the upper side of the end cap of the milling cutter of this utility model;
[0022] Figure 6 This is a three-dimensional structural diagram of the lower side of the end of the milling cutter according to this utility model.
[0023] Explanation of reference numerals in the attached drawings: 1. End of milling cutter; 2. End connecting post; 3. Adjusting sleeve; 4. Air ring seat; 5. Alloy cutting edge; 6. Mounting end; 7. Central air hole; 8. Chip removal groove; 9. First fastening bolt; 10. Adjusting insert; 11. Second fastening bolt; 12. Mounting end post; 13. Air supply interface. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.
[0025] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.
[0026] Example
[0027] Please see Figures 1-6 This utility model provides a technical solution: an end mill with an extension bar, comprising a cutter end 1 and a cutter shank mechanism. The cutter end 1 is used for milling workpieces. To perform cutting on the workpiece, multiple alloy cutting edges 5 are detachably installed on the lower part of the cutter end 1. To facilitate the disassembly and replacement of the alloy cutting edges 5, as shown in the attached... Figure 6 As shown, several alloy cutting edges 5 are evenly fixed in a circumferential shape to the lower part of the end mill 1 by bolts. To facilitate the discharge of waste chips, a chip removal groove 8 is provided on the circumference of the end mill 1. The chip removal groove 8 is located between two adjacent alloy cutting edges 5. To accelerate the discharge of waste chips and the heat dissipation of the tool, a central air hole 7 is provided in the middle of the end mill 1. The central air hole 7 is opened through the middle of the end mill 1. Together with the chip removal groove 8 on the outside of the end mill 1, the cutting waste chips can be efficiently discharged through external air supply, and efficient heat dissipation can be provided for the tool head, which is conducive to improving the cutting stability and quality of the tool.
[0028] The tool holder mechanism is used for connecting and installing the end of the milling cutter 1. The tool holder mechanism includes an end connecting column 2, an adjusting sleeve 3, and an air slip ring seat 4. See attached diagram for details. Figure 3 As shown, to facilitate the connection and installation of the cutting tool and the milling head, a mounting end post 12 is fixed to the top of the adjusting sleeve 3. To facilitate connection and installation with the adjusting sleeve 3, an adjusting insert post 10 is provided on the upper part of the end connecting post 2. The adjusting insert post 10 is fixedly installed on the upper part of the end connecting post 2. A insert post insertion hole is provided on the lower part of the adjusting sleeve 3. The adjusting insert post 10 is slidably fitted and inserted into the inner side of the insert post insertion hole. The end connecting post 2 is installed on the lower part of the adjusting sleeve 3 through the telescopic insertion of the adjusting insert post 10. The support length of the end mill 1 can be flexibly adjusted according to the processing needs by means of the telescopic adjustment and the limiting bolt. The structure is simple and easy to operate. In order to facilitate the locking limit of the adjustment pin 10, a second fastening bolt 11 is provided on the side of the adjustment sleeve 3. The second fastening bolt 11 is threaded to the inside of the screw hole provided on the side of the adjustment sleeve 3. Limiting screw holes are provided at equal intervals on the upper part of the adjustment pin 10. The end of the second fastening bolt 11 passes through the adjustment sleeve 3 and is threaded to the inside of the limiting screw hole.
[0029] For easy connection and installation with end connector 2, see attached... Figure 4As shown, a mounting end 6 is fixed on the upper part of the end mill tip 1, and an end mill mounting hole is provided on the lower part of the end mill connecting post 2. The mounting end 6 is fitted and inserted into the inner side of the end mill mounting hole. In order to facilitate the locking and limiting of the end mill connecting post 2, first fastening bolts 9 for locking and limiting the mounting end 6 are evenly provided on the outer periphery of the end mill connecting post 2. The end mill tip 1 can be detachably installed on the lower part of the end mill connecting post 2 through the mounting end 6 and the first fastening bolts 9. During use, the end mill tip 1 can be flexibly replaced according to the processing needs. With the adjustable end rod mounting structure, the end mill can meet the processing needs of different types of workpieces.
[0030] To facilitate air supply connection, the air slip ring seat 4 is installed on the upper part of the adjusting sleeve 3. The air slip ring seat 4 is an existing technology product, as shown in the attached figure. Figure 3 As shown, the air slip ring seat 4 is rotatably mounted on the upper part of the adjusting sleeve 3, which can realize the rotational air supply connection of the upper part of the adjusting sleeve 3. In order to facilitate the air supply connection, an air supply interface 13 is provided on the side of the air slip ring seat 4. In order to facilitate the air supply connection, an air guide hole is provided in the middle of the end connecting column 2 and the adjusting sleeve 3. The two ends of the air guide hole are connected to the air supply interface 13 and the middle air hole 7, respectively. With the chip removal groove 8 on the outside of the end of the milling cutter 1, the cutting waste can be efficiently discharged through external air supply and the cutting head can be provided with efficient heat dissipation, which is conducive to improving the cutting stability and quality of the tool.
[0031] In terms of working principle or structural principle, during installation, the adjusting sleeve 3 is first installed on the upper part of the milling head of the milling machine through the mounting end post 12, and the air supply pipe is connected and installed. Then, according to the processing requirements, a suitable milling cutter end head 1 is selected. Then, the mounting end head 6 on the upper part of the milling cutter end head 1 is aligned with the mounting insertion hole on the lower part of the end head connecting post 2 and the milling cutter end head 1 is installed on the lower part of the end head connecting post 2 by insertion. Then, the first fastening bolt 9 is used to lock and limit the milling cutter end head 1. After completion, the extension of the adjusting insertion post 10 is adjusted by telescoping according to the processing requirements of the workpiece. After completion, the second fastening bolt 11 is used to lock and fix the adjusting insertion post 10. During operation, the milling cutter end head 1 is driven by the milling head to rotate at high speed and cuts the workpiece through the alloy cutting edge 5. At the same time, the air blows out through the central air hole 7. Through the blowing effect and the guidance of the chip removal groove 8, the cutting chips are efficiently discharged. At the same time, the air blown out through the chip removal groove 8 can accelerate the heat dissipation and cooling of the cutter head, which is beneficial to the improvement of the cutting stability and quality of the tool.
[0032] In summary, this end mill adopts a split adjustable structure. The end mill end 1 is connected and installed through the adjusting sleeve 3 and the end connecting post 2. The adjusting sleeve 3 and the end connecting post 2 are connected by the adjusting pin 10. The support length of the end mill end 1 can be flexibly adjusted according to the processing needs by adjusting the extension and retraction and the bolt limit. The structure is simple and easy to operate. The end mill end 1 is connected and installed through the mounting end 6. During use, the end mill end 1 can be flexibly replaced according to the processing needs. With the adjustable end rod mounting structure, the end mill can meet the processing needs of different types of workpieces. In addition, a central air hole 7 is set in the middle of the end mill end 1. Together with the chip removal groove 8 on the outside of the end mill end 1, the cutting waste can be efficiently discharged through external air supply, and efficient heat dissipation can be provided for the cutter head, which is conducive to improving the cutting stability and quality of the tool.
[0033] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.
Claims
1. A cutting end mill with an extension bar, comprising a cutter end (1) and a tool holder mechanism, characterized in that: The tool holder mechanism is used for connecting and installing the end of the milling cutter (1). The tool holder mechanism includes an end connecting column (2), an adjusting sleeve (3), and an air slip ring seat (4). The air-slip ring seat (4) is installed on the upper part of the adjusting sleeve (3). An adjusting pin (10) is provided on the upper part of the end connecting column (2). The end connecting column (2) is telescopically connected to the lower part of the adjusting sleeve (3) through the adjusting pin (10). A second fastening bolt (11) is provided on the side of the adjusting sleeve (3). The end of the milling cutter (1) is detachably installed on the lower part of the end connecting column (2). The lower part of the milling cutter end (1) is detachably equipped with an alloy cutting edge (5), the circumferential side of the milling cutter end (1) is provided with a chip removal groove (8), and the middle part of the milling cutter end (1) is provided with a central air hole (7).
2. The end mill with an extension rod according to claim 1, characterized in that: The top of the adjusting sleeve (3) is fixed with an installation end post (12), the air slip ring seat (4) is rotatably installed on the upper part of the adjusting sleeve (3), and the side of the air slip ring seat (4) is provided with an air supply port (13).
3. The end mill with an extension rod according to claim 2, characterized in that: The adjusting pin (10) is fixedly installed on the upper part of the end connecting column (2), and the lower part of the adjusting sleeve (3) is provided with a pin insertion hole. The adjusting pin (10) is slidably fitted and inserted into the inner side of the pin insertion hole.
4. The end mill with an extension rod according to claim 3, characterized in that: The second fastening bolt (11) is threaded to the inner side of the screw hole provided on the side of the adjusting sleeve (3). The upper part of the adjusting insert (10) is provided with limit screw holes at equal intervals. The end of the second fastening bolt (11) passes through the adjusting sleeve (3) and is threaded to the inner side of the limit screw hole.
5. An end mill with an extension rod according to claim 4, characterized in that: The upper part of the milling cutter end (1) is fixed with an installation end (6), and the lower part of the end connector (2) is provided with an end mounting hole. The installation end (6) is fitted and inserted into the inner side of the end mounting hole. The outer periphery of the end connector (2) is evenly provided with first fastening bolts (9) for locking and limiting the installation end (6). The milling cutter end (1) is fixedly installed on the lower part of the end connector (2) by the installation end (6) and the first fastening bolts (9).
6. An end mill with an extension rod according to claim 1, characterized in that: The alloy cutting edge (5) is provided in multiple ways. Several alloy cutting edges (5) are evenly fixed in a circumferential shape at the lower part of the end of the milling cutter (1) by bolts. The chip removal groove (8) is provided between two adjacent alloy cutting edges (5).
7. An end mill with an extension rod according to claim 6, characterized in that: The central air hole (7) is opened through the middle of the end of the milling cutter (1). The middle of the end connecting column (2) and the adjusting sleeve (3) are both provided with air guide holes. The two ends of the air guide holes are connected to the air supply interface (13) and the central air hole (7), respectively.